CN112413913A

CN112413913A - Deep well heat exchange sleeve geothermal in-situ thermovoltaic power generation device

Info

Publication number: CN112413913A
Application number: CN202011425233.8A
Authority: CN
Inventors: 李碧雄; 莫思特
Original assignee: Sichuan University
Current assignee: Sichuan University
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-02-26
Anticipated expiration: 2040-12-09
Also published as: CN112413913B

Abstract

A deep well heat exchange casing geothermal in-situ thermovoltaic power generation device. Involved in the field of geothermal power generation. The device consists of a water inlet section, a commutator, a casing heat exchange section, a top thermovoltaic power generation module and a turbine power generation module. The water inlet section, commutator, and casing heat exchange section are all underground, and are connected in order from deep to the surface; the top thermal photovoltaic power generation module is partly installed underground, partly on the ground, and the turbine power generation module is installed on the ground . The present invention adopts two power generation modes, the top thermovoltaic power generation module and the turbine generator. The electric energy of the turbine generator is directly output as the turbine power generation power supply, and the power supply of each tube-wall-type thermovoltaic power generation basic module is output in parallel, and the output power is called the tube-wall thermovoltaic power supply. The device of the invention meets the requirements of deep in-situ geothermal power generation required by construction. In the process of in-situ geothermal power generation, geothermal water is recharged in situ, and the recharge water level is much lower than the water extraction level; two power generation technologies are adopted to improve power generation efficiency.

Description

Deep well heat exchange sleeve geothermal in-situ thermovoltaic power generation device

One, the technical field

The invention relates to the field of geothermal power generation, in particular to a deep well heat exchange sleeve geothermal in-situ thermovoltaic power generation device.

Second, background Art

Geothermal energy is a novel clean energy source, is widely distributed and has abundant reserves. The geothermal energy is used for generating power and taking heat, the generated pollution is little, the energy sources can be regenerated, and the unit cost of the power generation and the heat taking is low. Therefore, geothermal power generation is receiving increasing attention and utilizing heat. The application number CN202010112988.6 'an in-situ geothermal power generation system', provides an in-situ geothermal power generation system, which comprises a heat pipe, a thermoelectric temperature difference power generation device and a magnetic suspension power generation device. The heat pipe is directly buried underground, the heat pipe is located at a geothermal source, on one hand, a thermoelectric temperature difference power generation device located at the lower section of the heat pipe can directly convert geothermal energy into electric energy, on the other hand, in the process that the circulating working medium is changed into a gaseous working medium, the formed upward gaseous working medium can drive a magnetic suspension power generation device located in the middle of the heat pipe, the geothermal energy is converted into mechanical energy and then converted into electric energy, and the geothermal energy-in-situ power generation device has the advantages of low energy loss, high power generation efficiency and the like. Application No.: CN201711393103.9 Integrated System for in-situ geothermal thermoelectric Power Generation device provides an integrated System for in-situ geothermal thermoelectric Power Generation device, which comprises an outermost protective layer, a highly heat conductive gel layer in the middle for heat transfer, and an innermost cold water circulation pipe. The thermoelectric device has no mechanical rotating part, has no noise during working, directly converts heat energy into electric energy, does not generate mechanical energy loss, and can generate electricity by thermoelectric conversion at different grade heat sources such as deep ground, surface hot springs and the like. Although the above applications have unique advantages, they all have the following common problems:

(1) the construction requirement of the deep geothermal well is not considered;

(2) geothermal water recharge is not considered.

Third, the invention

The invention aims to provide a deep well heat exchange casing geothermal in-situ thermovoltaic power generation device aiming at the defects of the prior art. The device meets the requirements of deep-ground in-situ geothermal power generation of construction requirements, and geothermal water is recharged in situ in the in-situ geothermal power generation process.

The purpose of the invention is achieved by the following steps: the device consists of a water inlet section, a commutator, a sleeve heat exchange section, a top thermovoltaic power generation module and a turbine power generation module. The water inlet section, the commutator and the sleeve heat exchange section are all underground and are sequentially butted from deep ground to the ground surface; the top thermovoltaic power generation module is partially installed underground, partially installed on the ground, and the turbine power generation module is installed on the ground.

The water inlet section is formed by connecting a plurality of water inlet pipes, one end of each water inlet pipe is processed into a water inlet external thread, and the other end of each water inlet pipe is processed into a water inlet internal thread; the external threads and the internal threads at the two ends have the same major diameter, minor diameter and thread pitch, and the adjacent water inlet pipes are connected in a screwing way through the external threads and the internal threads at the two ends to form the required length; the lowest part of the water inlet section is a recharge inlet, and the highest part is a top end interface of the water inlet section; the top end interface of the water inlet section is an external thread, the recharge inlet is an internal thread, and the top end interface of the water inlet section is tightly connected with the water inlet pipe connecting thread of the water inlet section connecting interface of the commutator through screwing.

The commutator is formed by connecting a water inlet section connecting port, four recharging water communicating vessels and a sleeve heat exchange section connecting interface. The commutator guides the recharge water between the outer pipe and the inner pipe of the heat exchange section of the sleeve to the water inlet section connecting interface through the recharge water communicating vessel, the recharge water is guided to the water inlet section through the external water inlet thread screwed with the top end of the water inlet section, and the recharge water is guided to the underground from the recharge inlet at the bottom end of the water inlet section.

The sleeve heat exchange section is composed of an axial flow water pump section, a sleeve heat exchange section connector and a sleeve heat exchange section pipeline, and the sleeve heat exchange section connector is connected with the adjacent sleeve heat exchange section pipeline to be connected into any length according to needs.

The sleeve heat exchange section pipeline consists of an inner pipe of the sleeve heat exchange section and an outer pipe of the sleeve heat exchange section; the lengths of the inner pipe of the sleeve heat exchange section and the outer pipe of the sleeve heat exchange section are equal, and the length is Hn.

The sleeve heat exchange section connector consists of a sleeve heat exchange section outer pipe connector, a sleeve heat exchange section inner pipe connector and a sleeve heat exchange section clamping piece; the sleeve heat exchange section clamping piece is used for fixing the axis between the sleeve heat exchange section outer pipe connector and the sleeve heat exchange section inner pipe connector; the inner pipe connector of the sleeve heat exchange section is connected with the inner pipe of the adjacent sleeve heat exchange section, and the outer pipe connector of the sleeve heat exchange section is connected with the outer pipe of the adjacent sleeve heat exchange section.

The axial flow water pump section is composed of an inner pipe of the sleeve heat exchange section and a well submersible pump, the well submersible pump is arranged in the middle of the inner pipe of the sleeve heat exchange section, and the axial flow water pump between a suction pipe of the well submersible pump and the inner pipe of the sleeve heat exchange section is sealed by a sealing ring.

The top thermovoltaic power generation module consists of a tube wall type thermovoltaic power generation module and a top heat exchange module.

The top thermovoltaic power generation module consists of a pipe wall type thermovoltaic power generation section and a top heat exchange module. The tube wall type thermovoltaic power generation section is composed of tube wall type thermovoltaic power generation basic modules.

The tube wall type thermovoltaic power generation base module is composed of a tube wall type thermovoltaic power generation base module shell, a tube wall type thermovoltaic power generation module, a tube wall type thermovoltaic power generation base module inner layer, a thermovoltaic module supporting frame and a tube wall type thermovoltaic power generation base module sealing ring.

The top heat exchange module comprises a heat exchange connecting pipe, a bottom heat exchange joint and a top heat exchange joint.

The turbine power generation module adopts an ORC generator, and working media output by a working medium pump of the generator are input into a turbine working medium inflow pipe. And the turbine working medium outlet pipe outputs the heated working medium and is connected to an expansion machine working medium input interface of the ORC generator.

The water inlet section connecting port of the commutator is composed of a water inlet section connecting shell and a reinjection water connecting top cover; the water inlet section connecting shell is made of metal materials and is of a tubular structure, the upper side of the water inlet section connecting shell is welded with a reinjection water connecting top cover, and the lower side of the water inlet section connecting shell is processed into a water inlet pipe connecting thread; the connecting thread of the water inlet pipe is an internal thread and is screwed with the external thread of the water inlet pipe.

The recharge water communicating vessel is made of metal materials, the outer part of the recharge water communicating vessel is a solid and is called a main body fan ring column, the inner part of the recharge water communicating vessel is hollowed to form a hollowed fan ring column, and the top surface of the main body fan ring column is the top surface of the recharge water communicating vessel; the bottom surface of the main body fan-shaped ring column is called as the bottom surface of the recharge water communicating vessel.

The sleeve heat exchange section connecting interface is composed of a sleeve heat exchange section interface bottom plate, a sleeve heat exchange section outer pipe interface and a sleeve heat exchange section inner pipe interface, the sleeve heat exchange section outer pipe interface and the sleeve heat exchange section inner pipe interface are welded on the sleeve heat exchange section interface bottom plate, and the welding position is sealed.

The interface bottom plate of the sleeve heat exchange section is disc-shaped, the radius of the disc is the same as that of the reinjection water connecting top cover and is Ra; four hollowed sleeve heat exchange section back-irrigation water inlets are uniformly distributed on the upper side; the shape and size of the reinjection water inlets of the four sleeve heat exchange sections are the same as those of reinjection water communication interfaces of the reinjection water connecting top cover, and the hollowed positions are also the same as those of the reinjection water communication interfaces of the reinjection water connecting top cover.

The outermost side of the joint bottom plate of the sleeve heat exchange section is a joint welding part of an outer pipe of the sleeve heat exchange section and is used for welding the joint of the outer pipe of the sleeve heat exchange section; the middle of the joint bottom plate of the sleeve heat exchange section is hollowed into a circle, the hollowed area is called a hot water inlet of the sleeve heat exchange section, and the radius of the hot water inlet of the sleeve heat exchange section is r 2; the outer side of the hot water inlet of the sleeve heat exchange section is a welding part of an inner pipe connector of the sleeve heat exchange section.

The outer pipe joint of the sleeve heat exchange section is of a tubular structure and made of metal materials, the outer radius of the outer pipe joint is the same as the radius of a joint bottom plate of the sleeve heat exchange section, namely Ra, the inner radius is R6, and the inner radius R6 is larger than the outer radius R1 of the cross section of the recharge water communicating vessel; the lower side of the joint is welded with a joint bottom plate of the sleeve heat exchange section, the upper side of the joint is processed into internal threads which are called as external pipe joint internal threads of the sleeve heat exchange section, and the joint internal threads are screwed with the external pipe of the sleeve heat exchange section through the internal threads; setting the height of an outer pipe connector of the sleeve heat exchange section as H1; the height of the internal thread of the outer pipe connector of the sleeve heat exchange section is H2, the small diameter of the internal thread is 2r4, and r4 is larger than the inner radius r6 of the outer pipe connector of the sleeve heat exchange section.

The inner pipe interface of the sleeve heat exchange section is of a tubular structure, is made of metal materials, has the inner radius which is the same as the radius of a hot water inlet of the sleeve heat exchange section on a base plate of the sleeve heat exchange section interface and is r2, and the outer radius is r 5; the lower side of the joint is welded with a bottom plate of the joint of the heat exchange section of the sleeve pipe, and the upper side of the joint is processed into external threads, namely external threads of the joint of the inner pipe of the heat exchange section of the sleeve pipe, and the external threads are screwed with the inner pipe of the heat exchange section of the sleeve pipe; the height of the interface of the inner pipe of the sleeve heat exchange section is the same as that of the interface of the outer pipe of the sleeve heat exchange section, and is H1; the height of the external thread of the inner pipe connector of the sleeve heat exchange section is equal to the height of the internal thread of the outer pipe connector of the sleeve heat exchange section, namely H2, and the major diameter of the external thread is 2r 3.

The sleeve heat exchange section pipeline is divided into a sleeve heat exchange section inner pipe and a sleeve heat exchange section outer pipe.

The inner pipe of the sleeve heat exchange section is of a tubular structure and is made of a material with low heat conductivity coefficient and high elastic modulus, and the inner radius of the inner pipe of the sleeve heat exchange section is the same as the inner radius of the interface of the inner pipe of the sleeve heat exchange section and is r 2; the outer radius of the inner pipe of the sleeve heat exchange section is the same as the outer radius of the interface of the inner pipe of the sleeve heat exchange section, and is r 5; two ends of the inner pipe of the sleeve heat exchange section are processed into internal threads, called as inner pipe internal threads of the sleeve heat exchange section, and matched with the external threads of the interface of the inner pipe of the sleeve heat exchange section; the inner pipe of the lowest sleeve heat exchange section is screwed with the outer thread of the interface of the inner pipe of the sleeve heat exchange section through the inner thread of the inner pipe of the sleeve heat exchange section to form a whole.

The outer pipe of the sleeve heat exchange section is of a tubular structure and is made of metal materials, and the inner radius of the outer pipe of the sleeve heat exchange section is the same as the inner radius of the interface of the outer pipe of the sleeve heat exchange section and is r 6; the outer radius of the outer pipe of the sleeve heat exchange section is the same as the outer radius of the interface of the outer pipe of the sleeve heat exchange section, and is Ra; the two ends of the outer pipe of the sleeve heat exchange section are processed into external threads, which are called as the external threads of the outer pipe of the sleeve heat exchange section and are matched with the internal threads of the interface of the outer pipe of the sleeve heat exchange section; the outer pipe of the lowermost sleeve heat exchange section is screwed with the inner thread of the joint of the outer pipe of the sleeve heat exchange section through the outer thread of the outer pipe of the sleeve heat exchange section to form a whole.

The sleeve heat exchange section connector is composed of a sleeve heat exchange section outer pipe connector, a sleeve heat exchange section inner pipe connector and a sleeve heat exchange section clamping piece.

The sleeve heat exchange section inner pipe connector is used for connecting adjacent sleeve heat exchange section inner pipes, is tubular and is made of a material with low heat conductivity coefficient and high elastic modulus; the inner radius of the connector of the inner pipe of the sleeve heat exchange section is the same as the inner radius of the connector of the inner pipe of the sleeve heat exchange section, and is r 2; the outer radius of the connector of the inner pipe of the sleeve heat exchange section is the same as the outer radius of the connector of the inner pipe of the sleeve heat exchange section, and is r 5; the two ends of the inner pipe connector of the sleeve heat exchange section are processed into external threads, which are called as the external threads of the inner pipe connector of the sleeve heat exchange section and are matched with the internal threads of the inner pipe of the sleeve heat exchange section; the height of the external thread of the inner pipe connector of the sleeve heat exchange section is equal to the height of the internal thread of the outer pipe connector of the sleeve heat exchange section, namely H2, and the major diameter of the external thread of the inner pipe connector of the sleeve heat exchange section is 2r 3.

A support body of the sleeve pipe heat exchange section inner pipe connector is arranged between the outer threads of the sleeve pipe heat exchange section inner pipe connectors at the two ends; if the height of the inner pipe connector support is h3, h3 is greater than the height h1 of the clamp of the heat exchange section of the bushing.

Four sleeve heat exchange section inner pipe clamping grooves are uniformly distributed on the sleeve heat exchange section inner pipe connector support body and are used for embedding sleeve heat exchange section clamping pieces; the inner pipe clamping groove of the sleeve heat exchange section is hollowed according to the shape of the inner pipe clamping piece of the sleeve heat exchange section.

The sleeve heat exchange section outer pipe connector is used for connecting adjacent sleeve heat exchange section outer pipes, is tubular and is made of metal materials; the inner radius of the outer pipe connector of the sleeve heat exchange section is the same as the inner radius of the interface of the outer pipe of the sleeve heat exchange section, and is r 6. The outer radius of the outer pipe connector of the sleeve heat exchange section is the same as the outer radius of the outer pipe connector of the sleeve heat exchange section, and is Ra; two ends of the outer pipe connector of the sleeve heat exchange section are processed into internal threads, namely the internal threads of the outer pipe connector of the sleeve heat exchange section, and the internal threads are matched with the external threads of the outer pipe of the sleeve heat exchange section; the height of the internal thread of the external pipe connector of the sleeve heat exchange section is equal to the height of the internal thread of the interface of the external pipe of the sleeve heat exchange section, and is H2, and the small diameter of the internal thread of the external pipe connector of the sleeve heat exchange section is 2r 4.

A sleeve heat exchange section outer pipe connector support body 352 is arranged between the inner threads of the sleeve heat exchange section outer pipe connectors at the two ends; if the height of the support body of the outer pipe connector is h3, h3 is greater than the height h1 of the clamp of the heat exchange section of the sleeve.

Four sleeve heat exchange section outer pipe clamping grooves are uniformly distributed on the sleeve heat exchange section outer pipe connector support body and are used for embedding sleeve heat exchange section clamping pieces; the outer pipe clamping groove of the sleeve heat exchange section is hollowed out according to the shape of the outer pipe clamping sheet of the sleeve heat exchange section.

The sleeve heat exchange section clamping piece consists of an outer pipe clamping piece, an inner pipe positioning piece, an outer pipe positioning piece and an inner pipe clamping piece. The outer pipe clamping and fixing sheet is in a column shape with an arc section, and the column height is h 1; the radius of the arc is larger than the inner radius r6 of the outer pipe of the heat exchange section of the sleeve and is slightly smaller than r 4; the section of the inner pipe clamping piece is arc-shaped and columnar, and the columnar height is h 1; the radius of the arc is larger than r3 and slightly smaller than the radius r5 outside the inner tube of the sleeve heat exchange section; the inner pipe locating plate, the outer pipe locating plate and the inner pipe locating plate are welded to the two sides of the inner pipe locating plate and the two sides of the outer pipe locating plate respectively, so that the inner pipe locating plate, the outer pipe locating plate and the inner pipe locating plate are integrated.

In the top thermovoltaic power generation module, the shell of the pipe wall type thermovoltaic power generation basic module is of a tubular structure and is made of a metal material with good heat conductivity; the inner radius of the shell of the tube wall type thermovoltaic power generation base module is the same as the inner radius of the interface of the inner tube of the sleeve heat exchange section, and is r 2; the outer radius of the shell of the tube wall type thermovoltaic power generation base module is the same as the outer radius of the interface of the inner tube of the sleeve heat exchange section, and is r 5; the lower end of the shell of the tube wall type thermovoltaic power generation base module is processed into an internal thread which is called as an internal thread of the shell of the tube wall type thermovoltaic power generation base module; the upper end of the shell of the tube wall type thermovoltaic power generation base module is processed into external threads, the external threads are called as tube wall type thermovoltaic power generation base module shell external threads, and the specifications of the external threads are the same as those of the external threads of the inner tube interface of the sleeve heat exchange section; the internal thread of the shell of the tube wall type thermovoltaic power generation base module is matched with the external thread of the shell of the tube wall type thermovoltaic power generation base module, and a tubular structure is formed after screwing; the height of the internal thread of the tube wall type thermovoltaic power generation base module and the external thread of the tube wall type thermovoltaic power generation base module is H2, and the height of the shell of the tube wall type thermovoltaic power generation base module is Hn + H3+ H2.

The tube wall type thermovoltaic power generation module is composed of a plurality of thermoelectric power generation chips; the cold junction welding of thermoelectric generation chip is inboard at pipe wall type thermovoltaic power generation foundation module shell, and the hot junction welding of thermoelectric generation chip is in the pipe wall type thermovoltaic power generation foundation module inlayer outside.

The thermoelectric generation chips are aligned in the horizontal direction and the vertical direction, and the thermoelectric generation chips are arranged in rows in the horizontal direction and in columns in the vertical direction; the number of the thermoelectric generation chips in each row is the same, and the number of the thermoelectric generation chips in each column is the same; the thermoelectric generation chips in each row are connected in series; after the thermoelectric generation chips of each row are connected in series, the output power lines of each row are connected in parallel; the power output end of the tube wall type thermovoltaic power generation basic module is formed.

The thermovoltaic module support frame is composed of a thermovoltaic module support frame main body and four thermovoltaic module support frame side lugs, and is made of metal materials; the shape of a side lug of the thermovoltaic module support frame is the same as that of a sleeve heat exchange section clamping piece, and the thermovoltaic module support frame is symmetrically welded on the outer side of the thermovoltaic module support frame main body; the main body of the thermovoltaic module support frame is of a tubular structure, and the height of the thermovoltaic module support frame is h 1; the thermovoltaic support frame is used for limiting the distance between the pipe wall type thermovoltaic power generation base module and the outer pipe connector of the sleeve heat exchange section and is matched with the outer pipe connector of the water flow section for use.

The upper end and the lower end of the pipe wall type thermovoltaic power generation module are provided with pipe wall type thermovoltaic power generation base module sealing rings which are embedded in the middle of a pipe wall type thermovoltaic power generation base module shell and the inner layer of the pipe wall type thermovoltaic power generation base module to seal the pipe wall type thermovoltaic power generation module.

The inner layer of the pipe wall type thermovoltaic power generation base module is of a tubular structure, and the height of the inner layer is Hn + h 3; the upper end of the tube wall type thermovoltaic power generation base module is flush with the shell of the tube wall type thermovoltaic power generation base module; the outer diameter is r2 minus 2 times the thickness of the tube wall type thermovoltaic power generation module.

In the top heat exchange module, the heat exchange connecting pipe is of a tubular structure with a thicker wall thickness and is made of a metal material; the part of the heat exchange tube connected with the middle hollow part is a channel through which an geothermal water inner tube flows; three layers of cylindrical cavities which are axially parallel to the heat exchange connecting pipe are distributed on the pipe wall from inside to outside on a concentric circle of the cross section and respectively form a working medium inflow pipeline, a geothermal water outflow pipeline and a working medium outflow pipeline.

Below the heat exchange connecting pipe: a convex edge with a circular ring-shaped section is arranged between the working medium inflow pipeline and the geothermal water inner pipe and is called as an inner-layer tenon; a convex edge with an annular cross section is arranged between the working medium inflow pipeline and the geothermal water outflow pipeline and is called as a middle-layer tenon; a convex edge with an annular cross section is arranged between the geothermal water outflow pipeline and the working medium outflow pipeline and is called as an outer-layer tenon; the working medium flows out of the outer side of the pipeline and is processed into external threads, namely external threads at the lower end of the heat exchange pipe.

On the heat exchange connecting pipe: a concave edge with a circular ring-shaped section is arranged between the working medium inflow pipeline and the geothermal water inner pipe and is called as an inner-layer mortise; a concave edge with an annular cross section is arranged between the working medium inflow pipeline and the geothermal water outflow pipeline and is called as a middle-layer mortise; a concave edge with a circular ring-shaped section is arranged between the geothermal water outflow pipeline and the working medium outflow pipeline and is called as an outer-layer mortise. The working medium flows out of the outer side of the pipeline and is processed into internal threads, namely internal threads at the upper end of the heat exchange pipe.

The adjacent heat exchange connecting pipes are connected by screwing; when the external thread at the lower end of the heat exchange tube is screwed with the internal thread at the upper end of the heat exchange tube, the inner layer mortise, the middle layer mortise and the outer layer mortise are provided with the sealing rings.

When the adjacent heat exchange connecting pipes are connected in a screwing mode, the inner tenon and the outer tenon of the upper heat exchange connecting pipe correspond to the inner mortise, the middle mortise and the outer mortise of the lower heat exchange connecting pipe one by one, and the geothermal water inner pipe, the working medium inflow pipeline, the geothermal water outflow pipeline and the working medium outflow pipeline are isolated and sealed under the action of the sealing ring.

The protruding heights of the inner layer tenon, the middle layer tenon and the outer layer tenon are larger than the recessed depths of the inner layer mortise, the middle layer mortise and the outer layer mortise, and the protruding parts are called as a homogeneous annular channel, so that the working medium inflow pipelines of the same pipeline are communicated through the homogeneous annular channel, and the geothermal water outflow pipelines of the same pipeline are communicated through the homogeneous annular channel; the working medium outflow pipelines of the same pipeline are communicated through the homogeneous annular channel.

In the top heat exchange module, a bottom heat exchange joint is formed by combining a heat exchange joint external connecting pipe, a bottom joint outer pipe, a bottom joint middle pipe, a bottom joint inner pipe, a bottom joint external threaded pipe, a heat exchange joint bottom plate, a heat exchange joint isolation plate and a geothermal water connecting pipe; all the above components are made of metal materials.

The heat exchange joint external connecting pipe, the bottom joint outer pipe, the bottom joint middle pipe, the bottom joint inner pipe and the bottom joint external threaded pipe are all arranged on the heat exchange joint bottom plate; the heat exchange joint bottom plate is annular, and the heat exchange joint external connecting pipe, the bottom joint outer pipe and the bottom joint middle pipe are welded at the upper side. The bottom joint inner pipe penetrates through the heat exchange joint bottom plate and is welded with the heat exchange joint bottom plate on the side surface; the lower side is welded with an external thread pipe of a bottom joint.

The external connecting pipe of the heat exchange joint is of a tubular structure, and the lower end of the external connecting pipe is welded with the bottom plate of the heat exchange joint; the upper side is provided with internal threads which are called bottom joint internal threads; the bottom joint internal thread is matched and screwed with the external thread at the lower end of the heat exchange tube of the heat exchange connecting tube.

The bottom joint outer pipe is of a tubular structure, and the lower end of the bottom joint outer pipe is welded with the heat exchange joint bottom plate; the upper part is processed with a bottom joint outer side mortise, the size and the depth of the bottom joint outer side mortise are completely the same as those of the outer layer mortise of the heat exchange connecting pipe, and a plurality of outer pipe side holes are processed at the bottom.

The bottom joint middle pipe is of a tubular structure, and the lower end of the bottom joint middle pipe is welded with the heat exchange joint bottom plate; the upper part is processed with a bottom joint middle mortise, the size and the depth of the bottom joint middle mortise are completely the same as those of the middle layer mortise of the heat exchange connecting pipe, and a plurality of middle pipe side holes are processed at the bottom.

The bottom joint inner pipe penetrates through the heat exchange joint bottom plate and is welded with the heat exchange joint bottom plate on the side surface; the upper part is provided with a bottom joint inner side mortise, and the size and the depth of the bottom joint inner side mortise are completely the same as those of the inner layer mortise of the heat exchange connecting pipe; the lower part is processed into a lower mortise of a bottom joint; the lower mortise of the bottom joint is matched with the upper pipe wall of the pipe wall type thermovoltaic power generation base module.

The external thread pipe of the bottom joint is of a tubular structure and is provided with external threads; the external thread specification matches with the internal thread of the external pipe connector of the sleeve heat exchange section.

And a plurality of holes are formed in the positions of the heat exchange joint isolation plate corresponding to the heat exchange joint bottom plate and correspond to the geothermal water connecting pipes one by one.

The upper part of the geothermal water connecting pipe is welded with the heat exchange joint isolation plate, and the lower part of the geothermal water connecting pipe is welded with the heat exchange joint bottom plate.

The heat exchange joint isolation plate is of an annular structure, and the inner side of the upper edge of the outer pipe of the bottom joint is welded with the outer side of the heat exchange joint isolation plate; the outside on the top of the bottom joint middle pipe is welded with the inner side of the heat exchange joint isolation plate.

The external thread pipe of the bottom joint is screwed with the external pipe connector of the uppermost sleeve heat exchange section, and when the external thread pipe of the bottom joint is screwed, the lower mortise of the bottom joint is filled with the sealing ring to be sealed with the pipe wall at the upper end of the uppermost pipe wall type thermovoltaic power generation base module.

The heat exchange connecting pipe at the bottommost side is screwed with the internal thread of the bottom joint through the external thread at the lower end of the heat exchange pipe. When screwing, the bottom connects outside mortise, bottom to connect in the mortise, the bottom connects inboard mortise to add the sealing washer for bottom connects outer tube, bottom to connect in the pipe, bottom to connect the inner tube respectively with the outer tenon of heat transfer connecting pipe of bottommost, bottom connect middle level tenon, inlayer tenon sealed butt joint respectively.

The top heat exchange joint is composed of a top connecting disc, a top joint external threaded pipe, a top joint external tenon, a top joint middle tenon, a top joint internal tenon, a turbine working medium outlet pipe, a turbine working medium inlet pipe and an internal and external hot water connecting pipe; are all made of metal materials.

The shape and the height of the external thread pipe of the top joint are completely the same as the external thread at the lower end of the heat exchange pipe; the shape and the height of the outer tenon of the top joint are completely the same as those of the outer tenon of the heat exchange connecting pipe; the shape and the height of the tenon in the top joint are completely the same as those of the tenon in the middle layer of the heat exchange connecting pipe; the shape and the height of the inner tenon head of the top joint are completely the same as those of the inner tenon head of the heat exchange connecting pipe.

The lower end of the top connecting disc is respectively welded with the top joint external threaded pipe, the top joint external tenon, the top joint middle tenon and the top joint internal tenon.

The middle of the top connecting disc is provided with a top hot water inner port; a top hot water external interface is arranged between the outer layer tenon and the middle layer tenon; a turbine working medium outflow pipe is arranged between the outer-layer tenon and the external threaded pipe of the top joint, and the internal and external hot water connecting pipes are communicated with the top hot water internal joint and the top hot water external joint; a turbine working medium inflow pipe is arranged between the tenon in the top joint and the tenon in the middle layer.

The connection relationship of all parts of the sleeve heat exchange section is as follows:

(1) the lower end of the axial flow water pump section is screwed with an inner pipe interface of the sleeve heat exchange section connecting interface; the lower end of the outer pipe of the bottommost sleeve heat exchange section is screwed with the joint of the outer pipe of the sleeve heat exchange section connecting joint;

(2) the upper end of the axial flow water pump section is screwed with the inner pipe connector of the sleeve heat exchange section, the upper end of the outer pipe of the sleeve heat exchange section at the bottommost end is screwed with the outer pipe connector of the sleeve heat exchange section, and four sleeve heat exchange section clamping pieces are embedded between the inner pipe connector of the sleeve heat exchange section and the outer pipe connector of the sleeve heat exchange section;

(3) the lower end of the inner pipe of the heat exchange section of the casing pipe at the bottommost end is screwed with the connector of the inner pipe of the heat exchange section of the casing pipe; the lower end of the outer pipe of the secondary bottom end sleeve pipe heat exchange section is screwed with the outer pipe connector of the sleeve pipe heat exchange section;

(4) the upper end of the inner pipe of the sleeve heat exchange section is screwed with the connector of the inner pipe of the sleeve heat exchange section; the upper end of the outer pipe of the sleeve heat exchange section is screwed with the outer pipe connector of the sleeve heat exchange section; four sleeve heat exchange section clamping pieces are embedded between the sleeve heat exchange section inner pipe connector and the sleeve heat exchange section outer pipe connector;

(5) the lower end of the inner pipe of the next sleeve heat exchange section is screwed with the connector of the inner pipe of the previous sleeve heat exchange section; the lower end of the outer pipe of the next sleeve pipe heat exchange section is screwed with the connector of the outer pipe of the previous sleeve pipe heat exchange section;

(6) the upper end of the inner pipe of the sleeve heat exchange section is screwed with the inner pipe connector of the next sleeve heat exchange section; the upper end of the outer pipe of the sleeve heat exchange section is screwed with the outer pipe connector of the next sleeve heat exchange section; four sleeve heat exchange section clamping pieces are embedded between the sleeve heat exchange section inner pipe connector and the sleeve heat exchange section outer pipe connector;

(7) and (5) repeating (5) and (6) and connecting the sleeve heat exchange section with the required length.

The connection relation of the tube wall type thermovoltaic power generation section is as follows:

the tube wall type thermovoltaic power generation basic module section is assembled at the upper end of the sleeve heat exchange section;

(1) screwing a sleeve heat exchange section inner pipe connector on the sleeve heat exchange section inner pipe at the topmost end, screwing a sleeve heat exchange section outer pipe connector on the sleeve heat exchange section outer pipe at the topmost end, and embedding four sleeve heat exchange section clamping pieces between the sleeve heat exchange section inner pipe connector and the sleeve heat exchange section outer pipe connector;

(2) the upper end of the inner pipe connector of the sleeve heat exchange section is screwed with a pipe wall type thermovoltaic power generation base module;

(3) screwing the outer pipe of the sleeve heat exchange section at the upper end of the outer pipe connector of the sleeve heat exchange section, and screwing the outer pipe connector of the sleeve heat exchange section on the outer pipe of the sleeve heat exchange section; embedding a thermovoltaic module support frame in the inner part of the outer pipe connector of the sleeve heat exchange section;

(4) the upper end of the pipe wall type thermovoltaic power generation base module is screwed with the next pipe wall type thermovoltaic power generation base module; the number of the tube wall type thermovoltaic power generation base modules is determined according to the required height of the tube wall type thermovoltaic power generation base module sections;

(5) screwing the outer pipe of the sleeve heat exchange section at the upper end of the outer pipe connector of the sleeve heat exchange section, and screwing the outer pipe connector of the sleeve heat exchange section on the outer pipe of the sleeve heat exchange section; and a thermovoltaic module support frame is embedded in the outer pipe connector of the sleeve heat exchange section, and the required quantity is determined according to the height of the pipe wall type thermovoltaic power generation basic module section.

The connection relation of the top thermovoltaic power generation module is as follows:

(1) the bottom heat exchange joint is screwed with the outer pipe connector of the uppermost sleeve heat exchange section through the outer threaded pipe of the bottom joint, and when the bottom heat exchange joint is screwed, the lower mortise of the bottom joint is filled with the sealing ring to be sealed with the upper pipe wall of the uppermost pipe wall type thermovoltaic power generation base module;

(2) the heat exchange connecting pipe is screwed with the bottom joint internal thread of the bottom heat exchange joint through the external thread at the lower end of the heat exchange pipe;

(3) the upper heat exchange connecting pipe is screwed with the upper inner thread of the heat exchange pipe of the lower heat exchange connecting pipe through the lower outer thread of the heat exchange pipe, and the number of the screwed heat exchange connecting pipes is selected according to the requirement of the connecting length;

(4) and a top heat exchange joint is screwed at the upper end of the heat exchange connecting pipe at the uppermost edge.

The electric energy output mode of the power generation device is as follows:

(1) the electric energy of the turbine generator is directly output, and an output power supply is called as a turbine power generation power supply;

(2) the power supplies of the tube wall type thermovoltaic power generation basic modules are output in parallel, and the output power supply is called a tube wall thermovoltaic power supply.

The invention has the beneficial effects that:

(1) a deep in-situ geothermal power generation design scheme meeting construction requirements is provided;

(2) in the process of in-situ geothermal power generation, geothermal water is recharged in situ;

(3) the recharging water level is far lower than the heat extraction water level;

(4) two power generation modes are adopted, so that the power generation efficiency is improved;

description of the drawings

Fig. 1 is a schematic view of the general structure of the present invention.

FIG. 2 is a schematic view of a single water inlet pipe in the structure of the water inlet section of the present invention.

Fig. 3 is a schematic structural diagram of the commutator of the invention.

Fig. 4 is a schematic view of a connection port of the water inlet section.

Fig. 5 shows the top cover for connecting the back irrigation water.

Fig. 6 is a recharge water communicator.

Fig. 7 is a top view of the recharge water communicator.

Fig. 8 is a casing heat exchange section connection interface.

Fig. 9 is a bottom plate of a heat exchange section interface of a bushing.

Fig. 10 is a schematic view of an outer tube interface of the heat exchange section of the casing.

Fig. 11 is a cross-sectional view of an outer tube interface of a casing heat exchange section.

Fig. 12 is a schematic view of the tube interface in the heat exchange section of the casing.

Fig. 13 is a cross-sectional view of the tube interface in the heat exchange section of the casing.

Fig. 14 is a schematic view of the inner tubes of the heat exchange section of the casing.

Fig. 15 is a schematic view of the outer tube of the heat exchange section of the casing.

FIG. 16 is a schematic view of a ferrule heat exchange segment clamp configuration.

FIG. 17 is a schematic diagram of the connection of the clamp of the heat exchange section of the casing, the outer pipe connector of the heat exchange section of the casing and the inner pipe connector of the heat exchange section of the casing.

FIG. 18 is a schematic view of a tube connector in a heat exchange section of a casing.

FIG. 19 is a top view of a tube connector support structure in a heat exchange section of a casing.

Fig. 20 is a casing heat exchange section outer tube connector.

Fig. 21 is a schematic view of a thermomodule support bracket embedded inside an outer tube connector of a heat exchange section of a bushing.

Fig. 22 is a top view of the outer tube clamping groove structure of the sleeve heat exchange section.

Fig. 23 is a schematic structural diagram of a submersible pump for a hot water well.

FIG. 24 is a tube wall type thermovoltaic power generation base module.

Fig. 25 is a cross-sectional view of heat exchange connector in a top heat exchange module.

Figure 26 is a sectional view of the heat exchange connecting pipe structure.

FIG. 27 is a cross-sectional view of a bottom heat exchange fitting.

FIG. 28 is a schematic view of a heat exchange junction spacer.

FIG. 29 is a schematic view of a heat exchange junction base plate.

FIG. 30 is a cross-sectional view of a top heat exchange adapter.

FIG. 31 is a bottom view of a top heat exchange adapter.

In the figure, 1 water inlet section, 2 commutator, 5 sleeve heat exchange sections, 6 top thermovoltaic power generation module, 7 turbine generating block, 901 ground, 902 geothermal water, 110 water inlet pipe, 111 water inlet pipe body, 112 water inlet external screw thread, 113 water inlet internal screw thread, 210 water inlet section connecting port, 211-1 to 211-4 recharging water communicating interface, 220-1 to 220-4 recharging water communicating device, 230 sleeve heat exchange section connecting interface, 231 sleeve heat exchange section external pipe interface, 232 sleeve heat exchange section internal pipe interface, 233-1 to 233-4 sleeve heat exchange section recharging water inlet, 212 water inlet section connecting shell, 213 water inlet pipe connecting screw thread, 214 recharging water connecting top cover, 221 recharging water communicating device bottom surface, 222 recharging water communicating device top surface, 223 hollowed fan ring column, 224 main body fan ring column, 234 heat exchange section interface bottom plate, 235 sleeve section external pipe interface welding position, a welding part of an inner pipe interface of a 236 sleeve pipe heat exchange section, 237 sleeve pipe heat exchange section outer pipe interface internal threads, 239 sleeve pipe heat exchange section inner pipe interface external threads, a 244 sleeve pipe heat exchange section geothermal water inlet, 310 sleeve pipe heat exchange section inner pipe, 311-1, 311-2 sleeve pipe heat exchange section inner pipe internal threads, 320 sleeve pipe heat exchange section outer pipe, 321-1, 321-2 sleeve pipe heat exchange section outer pipe external threads, 331 sleeve pipe heat exchange section outer pipe clamping and fixing piece, 332 inner and outer pipe positioning piece, 333 sleeve pipe heat exchange section inner pipe clamping and fixing piece, 330-1, 330-2, 330-3, 330-4 sleeve pipe heat exchange section clamping and fixing piece, 340 sleeve pipe heat exchange section inner pipe connector, 350 sleeve pipe heat exchange section outer pipe connector, 341-1, 341-2 sleeve pipe heat exchange section inner pipe connector external threads, 342 sleeve pipe heat exchange section inner pipe connector support, 343-4 sleeve pipe heat exchange, 350 water flow section outer pipe connector, 351-1 and 351-2 sleeve pipe heat exchange section outer pipe connector internal threads, 352 sleeve pipe heat exchange section outer pipe connector support body, 353-1 to 353-4 sleeve pipe heat exchange section outer pipe clamping groove, 361 submerged pump, 362 axial flow water pump sealing ring, 471 pipe wall type thermovoltaic power generation base module shell, 472 pipe wall type thermovoltaic power generation module, 473 pipe wall type thermovoltaic power generation base module inner layer, 474-1 and 474-2 pipe wall type thermovoltaic power generation base module sealing ring, 475 pipe wall type thermovoltaic power generation base module internal threads, 476 pipe wall type thermovoltaic power generation base module external threads, 461 thermovoltaic module support frame main body, 462-1, 462-2, 462-3 and 462-4 thermovoltaic module support frame side lug, 511 geothermal water inner pipe, 512-a and 512-b inflow pipeline, 513-a working medium, 511 working medium, 513-b geothermal water outflow pipeline, 514-a and 514-b working medium outflow pipeline, 515-a and 515-b outer layer tenons, 516-a and 516-b middle layer tenons, 517-a and 517-b inner layer tenons, 518-a and 518-b heat exchange tube lower end external threads, 521-a and 521-b inner layer mortises, 522-a and 522-b middle layer mortises, 523-a and 523-b outer layer mortises, 524-a and 524-b heat exchange tube upper end internal threads, 512-1 to 512-16 working medium inflow pipeline, 513-1 to 513-24 geothermal water outflow pipeline, 514-1, 514-2, … … and 514-32 working medium outflow pipeline, 531-a and 531-b bottom joint internal threads, 532-a and 532-b bottom joint external side mortises, 533. 533-a, 533-b heat exchange joint isolation board, mortises in 534-a, 534-b bottom joints, inner mortises in 535-a, 535-b bottom joints, outer tubes of 536-a, 536-b bottom joints, middle tubes of 537-a, 537-b bottom joints, inner tubes of 538-a, 538-b bottom joints, side holes of 539-a, 539-b outer tubes, hot water connecting tubes of 540-a, 540-b, 540-1, 540-2-540-16, side holes of tubes in 541-a, 541-b, external thread tubes of 542-a, 542-b bottom joints, external connecting tubes of 543-a, 543-b heat exchange joints, 544-a, 544-b heat exchange joint bottom boards, 546-a, 546-b bottom joints lower mortises, 551. the external threaded pipe of the 551-a, 551-b top joint, the external tenon of the 552, 552-a, 552-b top joint, the middle tenon of the 553, 553-a, 553-b top joint, the internal tenon of the 554, 554-a, 554-b top joint, the internal hot water interface of 555 top, the external hot water interface of 556 top, the inflow pipe of 557 turbine working medium, the outflow pipe of 558 turbine working medium, the internal and external hot water connecting pipes of 559 and the top of 560 is connected with the disk.

Fifth, detailed description of the invention

Figure 1 shows a general block diagram of the apparatus of the invention.

The device is composed of a water inlet section 1, a commutator 2, a sleeve heat exchange section 5, a top thermovoltaic power generation module 6 and a turbine power generation module 7, wherein the water inlet section 1, the commutator 2 and the sleeve heat exchange section 5 are all underground and are sequentially butted in sequence from deep to the ground surface. The top thermovoltaic power generation module is partially installed underground, partially installed on the ground, and the turbine power generation module is installed on the ground.

The water inlet section 1 is formed by connecting a plurality of water inlet pipes 110, one end of each water inlet pipe is processed into a water inlet external thread 112, and the other end of each water inlet pipe is processed into a water inlet internal thread 113; the external threads and the internal threads at the two ends have the same major diameter, minor diameter and thread pitch, and the adjacent water inlet pipes are connected in a screwing way through the external threads and the internal threads at the two ends to form the required length; the lowest part of the water inlet section 1 is a recharge inlet, and the highest part is a top end interface of the water inlet section; the top end interface of the water inlet section is an external thread 112, the recharge inlet is an internal thread 113, and the top end interface of the water inlet section is tightly connected with a water inlet pipe connecting thread 213 of the water inlet section connecting interface of the commutator 2 through screwing.

See figures 3-13.

The commutator 2 is formed by connecting a water inlet section connecting port 210, four recharging water communicating vessels 220-1-220-4 and a sleeve heat exchange section connecting interface 230. The commutator 2 guides the recharge water between the outer pipe and the inner pipe of the sleeve heat exchange section 5 to the water inlet section connecting interface 210 through the recharge water communicating device, guides the recharge water to the water inlet section through the screwed connection with the top end interface of the water inlet section, and guides the recharge water to the underground from the recharge inlet at the bottom end of the water inlet section.

The inlet section connection port 210 of the diverter 2 is formed by an inlet section connection housing 212 and a recharge water connection top cover 214.

The water inlet section connecting shell is made of metal materials, the stainless steel is adopted in the embodiment and is of a tubular structure, the upper side is welded with a reinjection water connecting top cover 214, and the lower side is processed into a water inlet pipe connecting thread 213; the water inlet pipe connecting thread is an internal thread and is screwed with the water inlet pipe water inlet external thread 112.

The recharge water communicating vessels 220-1 to 220-4 are made of metal materials, and stainless steel is adopted in the embodiment. The outer part is a solid body, namely a main body fan ring column 224, the inner part is hollowed to form a hollowed fan ring column 223, and the top surface of the main body fan ring column is a top surface 222 of the recharge water communicating vessel; the bottom surface of the body fan-ring column is called the bottom surface 221 of the back-filling water communicating vessel, as shown in fig. 6 and 7.

The sleeve heat exchange section connection interface 230 is composed of a sleeve heat exchange section interface bottom plate 234, a sleeve heat exchange section outer tube interface 231 and a sleeve heat exchange section inner tube interface 232, the sleeve heat exchange section outer tube interface 231 and the sleeve heat exchange section inner tube interface 232 are welded on the sleeve heat exchange section interface bottom plate 234, and the welding position is sealed.

The sleeve heat exchange section interface bottom plate 234 is disc-shaped, the radius of the disc is the same as that of the reinjection water connecting top cover 214, and is Ra; four hollowed sleeve heat exchange section reinjection water inlets 233-1, 233-2, 233-3 and 233-4 are uniformly distributed on the upper side; the shape and size of the reinjection water inlets of the four sleeve heat exchange sections are the same as those of reinjection water communication interfaces 211-1, 211-2-211-3 and 211-4 of the reinjection water connecting top cover, and the hollowed positions are also the same as those of the reinjection water communication interfaces of the reinjection water connecting top cover. See fig. 8, 9.

The outermost side of the sleeve heat exchange section interface bottom plate 234 is provided with a welding part 235 of the sleeve heat exchange section outer pipe interface 231, and the welding part 235 is used for welding the sleeve heat exchange section outer pipe interface; the middle of the bottom plate of the interface of the sleeve heat exchange section is hollowed into a circle, the hollowed area is called a hot water inlet 244 of the sleeve heat exchange section, and the radius of the hot water inlet of the sleeve heat exchange section is r 2; and the outside of the hot water inlet 244 of the sleeve heat exchange section is provided with a welding part 236 of the inner pipe interface 232 of the sleeve heat exchange section.

The outer tube interface 231 of the heat exchange section of the casing is shown in fig. 10 and 11. The outer tube interface is the tubular structure, adopts metal material, and this embodiment adopts stainless steel. The outer radius is the same as the radius of the interface bottom plate of the sleeve heat exchange section, namely Ra, and the inner radius is R6, so that the inner radius R6 is greater than the outer radius R1 of the cross section of the recharge water communicating vessel; the lower side of the joint is welded with a joint bottom plate of the sleeve heat exchange section, the upper side of the joint is processed into internal threads which are called as external pipe joint internal threads of the sleeve heat exchange section, and the joint internal threads are screwed with the external pipe of the sleeve heat exchange section through the internal threads; setting the height of an outer pipe connector of the sleeve heat exchange section as H1; the height of the internal thread of the outer pipe connector of the sleeve heat exchange section is H2, the small diameter of the internal thread is 2r4, and r4 is larger than the inner radius r6 of the outer pipe connector of the sleeve heat exchange section.

The inner tube interface 232 of the sleeve heat exchange section is a tubular structure, and stainless steel is adopted in the embodiment. The inner radius is the same as the radius of a hot water inlet of the sleeve heat exchange section on the sleeve heat exchange section interface bottom plate, is r2, and the outer radius is r 5; the lower side of the joint is welded with the bottom plate of the joint of the heat exchange section of the sleeve pipe, and the upper side of the joint is processed into external threads which are called as external threads 239 of the joint of the inner pipe of the heat exchange section of the sleeve pipe and are screwed with the inner pipe of the heat exchange section of the sleeve pipe through the external threads; the height of the interface of the inner pipe of the sleeve heat exchange section is the same as that of the interface of the outer pipe of the sleeve heat exchange section, and is H1; the height of the external thread of the inner pipe connector of the sleeve heat exchange section is equal to the height of the internal thread of the outer pipe connector of the sleeve heat exchange section, namely H2, and the major diameter of the external thread is 2r 3.

The double pipe heat exchange section pipe is divided into a double pipe heat exchange section inner pipe 310 and a double pipe heat exchange section outer pipe 320. As shown in fig. 12 and 13.

The inner tube 310 of the heat exchange section of the casing is of a tubular structure and is made of a material with low heat conductivity and high elastic modulus, and the embodiment adopts a glass fiber composite material. The inner radius of the inner pipe of the sleeve heat exchange section is the same as the inner radius of the interface of the inner pipe of the sleeve heat exchange section, and is r 2; the outer radius of the inner pipe of the sleeve heat exchange section is the same as the outer radius of the interface of the inner pipe of the sleeve heat exchange section, and is r 5; the two ends of the inner pipe of the sleeve pipe heat exchange section are processed into internal threads which are called as inner pipe internal threads 311-1 and 311-2 of the sleeve pipe heat exchange section and are matched with the outer pipe interface threads 239 of the inner pipe of the sleeve pipe heat exchange section; the inner tube of the lowest sleeve heat exchange section is screwed with the outer thread 239 of the inner tube interface of the sleeve heat exchange section through the inner thread of the inner tube of the sleeve heat exchange section to form a whole.

The outer tube 320 of the heat exchange section of the casing tube is a tubular structure, and the embodiment is made of stainless steel material. The inner radius of the outer pipe of the sleeve heat exchange section is the same as the inner radius of the interface of the outer pipe of the sleeve heat exchange section, and is r 6; the outer radius of the outer pipe of the sleeve heat exchange section is the same as the outer radius of the interface of the outer pipe of the sleeve heat exchange section, and is Ra; external threads are processed at two ends of the outer pipe of the sleeve heat exchange section, are called as outer pipe external threads 321-1 and 321-2 of the sleeve heat exchange section and are matched with the outer pipe interface internal threads 237 of the sleeve heat exchange section; the outer pipe of the lowermost sleeve heat exchange section is screwed with the inner pipe interface thread 237 of the outer pipe of the sleeve heat exchange section through the outer pipe thread of the sleeve heat exchange section to form a whole. As shown in fig. 14 and 15.

The casing heat exchange section connector comprises a casing heat exchange section outer pipe connector 350, a casing heat exchange section inner pipe connector 340, and casing heat exchange section clamping pieces 330-1, 330-2, 330-3 and 330-4. As shown in fig. 16 and 17.

As shown in fig. 18 and 19. The sleeve heat exchange section inner pipe connector 340 is used for connecting adjacent sleeve heat exchange section inner pipes, is tubular and is made of a material with low heat conductivity coefficient and high elastic modulus; the inner radius of the sleeve heat exchange section inner pipe connector 340 is the same as the inner radius of the sleeve heat exchange section inner pipe connector interface, and is r 2; the outer radius of the connector of the inner pipe of the sleeve heat exchange section is the same as the outer radius of the connector of the inner pipe of the sleeve heat exchange section, and is r 5; the two ends of the sleeve heat exchange section inner pipe connector are processed into external threads which are called as outer threads 341-1 and 341-2 of the sleeve heat exchange section inner pipe connector and are matched with the inner threads of the sleeve heat exchange section inner pipe; the height of the external thread of the inner pipe connector of the sleeve heat exchange section is equal to the height of the internal thread of the outer pipe connector of the sleeve heat exchange section, namely H2, and the major diameter of the external thread of the inner pipe connector of the sleeve heat exchange section is 2r 3.

A sleeve pipe heat exchange section inner pipe connector support body 342 is arranged between the outer threads of the sleeve pipe heat exchange section inner pipe connectors at the two ends; if the height of the inner pipe connector support is h3, h3 is greater than the height h1 of the clamp of the heat exchange section of the bushing.

Four sleeve heat exchange section inner pipe clamping grooves 343-1, 343-2, 343-3 and 343-4 are uniformly distributed on the sleeve heat exchange section inner pipe connector support body 342 and are used for embedding sleeve heat exchange section clamping pieces; the inner pipe clamping groove of the sleeve heat exchange section is hollowed according to the shape of the inner pipe clamping piece of the sleeve heat exchange section.

See fig. 20-23.

The casing heat exchange section outer pipe connector 350 is used for connecting adjacent casing heat exchange section outer pipes, is tubular and is made of metal materials; the inner radius of the outer pipe connector of the sleeve heat exchange section is the same as the inner radius of the outer pipe connector of the sleeve heat exchange section, and is r 6; the outer radius of the outer pipe connector of the sleeve heat exchange section is the same as the outer radius of the outer pipe connector of the sleeve heat exchange section, and is Ra; two ends of the outer pipe connector of the sleeve heat exchange section are processed into internal threads which are called as inner threads 351-1 and 351-2 of the outer pipe connector of the sleeve heat exchange section and are matched with the outer threads of the outer pipe of the sleeve heat exchange section; the height of the internal thread of the external pipe connector of the sleeve heat exchange section is equal to the height of the internal thread of the interface of the external pipe of the sleeve heat exchange section, and is H2, and the small diameter of the internal thread of the external pipe connector of the sleeve heat exchange section is 2r 4.

The thermomodule support bracket is embedded inside the casing heat exchange section outer tube connector as shown in fig. 21.

The thermovoltaic module support frame is composed of a thermovoltaic module support frame main body 461 and four thermovoltaic module support frame side lugs 462-1, 462-2, 462-3 and 462-4 which are made of metal materials. The shape of the side lug of the thermovoltaic module support frame is the same as that of the sleeve heat exchange section clamping piece 330, and the thermovoltaic module support frame is symmetrically welded on the outer side of the thermovoltaic module support frame main body. The main body of the thermovoltaic module support frame is of a tubular structure, and the height of the thermovoltaic module support frame is h 1; the thermovoltaic support frame is used for limiting the distance between the pipe wall type thermovoltaic power generation base module and the outer pipe connector of the sleeve heat exchange section and is matched with the outer pipe connector of the water flow section for use.

Four sleeve heat exchange section outer pipe clamping grooves 353-1, 353-2, 353-3 and 353-4 are uniformly distributed on the sleeve heat exchange section outer pipe connector support body and are used for embedding sleeve heat exchange section clamping pieces; the outer pipe clamping groove of the sleeve heat exchange section is hollowed out according to the shape of the outer pipe clamping sheet of the sleeve heat exchange section.

The sleeve heat exchange section clamping piece 330 comprises sleeve heat exchange section clamping pieces 330-1, 330-2, 330-3 and 330-4, and the sleeve heat exchange section clamping pieces comprise sleeve heat exchange section outer pipe clamping pieces 331, inner and outer pipe positioning pieces 332 and sleeve heat exchange section inner pipe clamping pieces 333, the outer pipe clamping pieces are columnar with arc sections, and the columnar height is h 1; the radius of the arc is larger than the inner radius r6 of the outer pipe of the heat exchange section of the sleeve and is slightly smaller than r 4; the section of the inner pipe clamping piece is arc-shaped and columnar, and the columnar height is h 1; the radius of the arc is larger than r3 and slightly smaller than the radius r5 outside the inner tube of the sleeve heat exchange section; the inner and outer tube positioning pieces are welded with the outer tube clamping and fixing piece 331 and the inner tube clamping and fixing piece 332 respectively at two sides, so that the inner and outer tube positioning piece 332, the outer tube clamping and fixing piece 331 of the sleeve heat exchange section and the inner tube clamping and fixing piece 333 of the sleeve heat exchange section are integrated.

The axial flow water pump section is composed of an inner pipe of the sleeve heat exchange section and a well submersible pump, the well submersible pump is arranged in the middle of the inner pipe of the sleeve heat exchange section, an axial flow water pump sealing ring is sealed between a well submersible pump suction pipe and the inner pipe of the sleeve heat exchange section, and the axial flow water pump sealing ring is made of rubber.

The submersible pump for the well in the embodiment adopts a submersible pump for a 600QJR hot water well, which is manufactured by Tianjin limited company and has a sectional view as shown in fig. 23.

The connection relation of all parts of the axial flow water pump section is as follows:

(1) the lower end of the axial flow water pump section is screwed with an inner pipe of the sleeve heat exchange section connecting interface; the lower end of the outer pipe of the bottommost sleeve heat exchange section is screwed with the outer pipe of the sleeve heat exchange section connecting interface;

(5) the lower end of the inner pipe of the sleeve heat exchange section is screwed with a connector of the inner pipe of the sleeve heat exchange section; the lower end of the outer pipe of the sleeve heat exchange section is screwed with the connector of the outer pipe of the sleeve heat exchange section;

(6) the upper end of the inner pipe of the sleeve heat exchange section is screwed with the connector of the inner pipe of the sleeve heat exchange section; the upper end of the outer pipe of the sleeve heat exchange section is screwed with the outer pipe connector of the sleeve heat exchange section; four sleeve heat exchange section clamping pieces are embedded between the sleeve heat exchange section inner pipe connector and the sleeve heat exchange section outer pipe connector;

(7) and connecting the inner pipe of the sleeve heat exchange section with the outer pipe of the sleeve heat exchange section in a required length.

The top thermovoltaic power generation module 6 is composed of a tube wall type thermovoltaic power generation module and a top heat exchange module. The tube wall type thermovoltaic power generation base module is composed of a tube wall type thermovoltaic power generation base module shell 471, a tube wall type thermovoltaic power generation module 472, a tube wall type thermovoltaic power generation base module 473 and tube wall type thermovoltaic power generation base module sealing rings 474-1 and 474-2.

The tube wall type thermovoltaic power generation basic module structure is shown in fig. 24.

The tube wall type thermovoltaic power generation base module casing 471 is a tubular structure and is made of a metal material with good thermal conductivity, and the embodiment is made of an aluminum alloy. The inner radius of the shell of the tube wall type thermovoltaic power generation base module is the same as the inner radius of the interface of the inner tube of the sleeve heat exchange section, and is r 2; the outer radius of the shell of the tube wall type thermovoltaic power generation base module is the same as the outer radius of the interface of the inner tube of the sleeve heat exchange section, and is r 5; the lower end of the shell of the tube wall type thermovoltaic power generation base module is processed into an internal thread, which is called as a tube wall type thermovoltaic power generation base module shell internal thread 475; the upper end of the shell of the pipe wall type thermovoltaic power generation base module is processed into an external thread which is called as a pipe wall type thermovoltaic power generation base module shell external thread 476; the internal thread of the shell of the tube wall type thermovoltaic power generation base module is matched with the external thread of the shell of the tube wall type thermovoltaic power generation base module, and a tubular structure is formed after screwing; the height of the internal thread of the tube wall type thermovoltaic power generation base module and the external thread of the tube wall type thermovoltaic power generation base module is H2, and the height of the shell of the tube wall type thermovoltaic power generation base module is Hn + H3+ H2.

The tube wall type thermovoltaic power generation module 472 is composed of a plurality of thermoelectric power generation chips; the cold end of the thermoelectric generation chip is welded inside the tube wall type thermovoltaic generation base module shell 471, and the hot end of the thermoelectric generation chip is welded outside the tube wall type thermovoltaic generation base module inner layer 473.

The upper end and the lower end of the pipe wall type thermovoltaic power generation module are provided with pipe wall type thermovoltaic power generation base module sealing rings 474-1 and 474-2 which are embedded between the shell of the pipe wall type thermovoltaic power generation base module and the inner layer of the pipe wall type thermovoltaic power generation base module to seal the pipe wall type thermovoltaic power generation module.

The inner layer 473 of the tube wall type thermovoltaic power generation base module is of a tubular structure and has the height Hn + h 3; the upper end of the tube wall type thermovoltaic power generation base module is flush with the shell of the tube wall type thermovoltaic power generation base module; the outer diameter is r2 minus 2 times the thickness of the tube wall type thermovoltaic power generation module.

The thermoelectric generation chip that this embodiment adopted Hubei Saugui new energy science and technology Limited to produce, the model: TEG 1-19913.

The pipe wall type thermovoltaic power generation module has the following connection and assembly relations:

the tube wall type thermovoltaic power generation basic module section is assembled at the upper end of the sleeve heat exchange section.

(1) The method comprises the following steps that a sleeve heat exchange section inner pipe connector is screwed on a sleeve heat exchange section inner pipe at the topmost end, a sleeve heat exchange section outer pipe connector is screwed on a sleeve heat exchange section outer pipe at the topmost end, and four sleeve heat exchange section clamping pieces are embedded between the sleeve heat exchange section inner pipe connector and the sleeve heat exchange section outer pipe connector;

(4) the upper end of the pipe wall type thermovoltaic power generation base module is screwed with the next pipe wall type thermovoltaic power generation base module;

(5) screwing the outer pipe of the sleeve heat exchange section at the upper end of the outer pipe connector of the sleeve heat exchange section, and screwing the outer pipe connector of the sleeve heat exchange section on the outer pipe of the sleeve heat exchange section; embedding a thermovoltaic module support frame in the inner part of the outer pipe connector of the sleeve heat exchange section;

(6) and (4) determining the number of the tube wall type thermovoltaic power generation base modules according to the required height of the tube wall type thermovoltaic power generation base module sections, and determining the times of repeating the steps (4) to (5) according to the number of the tube wall type thermovoltaic power generation base modules.

See fig. 25-31.

The top heat exchange module consists of a tube wall type thermovoltaic power generation module and a top heat exchange module. The tube wall type thermovoltaic power generation base module is composed of a tube wall type thermovoltaic power generation base module shell 471, a tube wall type thermovoltaic power generation module 472, a tube wall type thermovoltaic power generation base module 473 and tube wall type thermovoltaic power generation base module sealing rings 474-1 and 474-2.

In the top heat exchange module, the heat exchange connecting pipe is of a tubular structure with a thicker wall thickness and is made of a metal material, and an embodiment of the heat exchange connecting pipe is made of aluminum alloy. The hollow part in the middle of the heat exchange tube is a channel through which the geothermal water inner tube 511 flows; three layers of cylindrical cavities which are axially parallel to the heat exchange connecting pipe are distributed on the concentric circle of the section from inside to outside on the pipe wall and respectively comprise working medium inflow pipelines 512-a and 512-b, geothermal water outflow pipelines 513-a and 513-b and working medium outflow pipelines 514-a and 514-b.

Below the heat exchange connecting pipe: a convex edge with an annular cross section is arranged between the working medium inflow pipeline and the geothermal water inner pipe and is called inner-layer tenons 517-a and 517-b; a convex edge with an annular cross section is arranged between the working medium inflow pipeline and the geothermal water outflow pipeline and is called as middle-layer tenons 516-a and 516-b; a convex edge with an annular cross section is arranged between the geothermal water outflow pipeline and the working medium outflow pipeline and is called outer-layer tenons 515-a and 515-b; the working medium flows out of the outer side of the pipeline and is processed into external threads which are called as external threads 518-a and 518-b at the lower end of the heat exchange pipe.

On the heat exchange connecting pipe: a concave edge with a circular ring-shaped section is arranged between the working medium inflow pipeline and the geothermal water inner pipe and is called as inner-layer mortises 521-a and 521-b; a concave edge with an annular cross section is arranged between the working medium inflow pipeline and the geothermal water outflow pipeline and is called as middle-layer mortises 522-a and 522-b; a concave edge with an annular cross section is arranged between the geothermal water outflow pipeline and the working medium outflow pipeline and is called as outer-layer mortises 523-a and 523-b; the working medium flows out of the outer side of the pipeline and is processed into internal threads which are called as internal threads 524-a and 524-b at the upper end of the heat exchange pipe.

When the external threads 518-a and 518-b at the lower end of the heat exchange tube are screwed with the internal threads 524-a and 524-b at the upper end of the heat exchange tube, the sealing rings are added to the inner mortises 521-a and 521-b, the middle mortises 522-a and 522-b, and the outer mortises 523-a and 523-b.

The upper heat exchange connecting pipe inner layer tenons 517-a and 517-b, the middle layer tenons 516-a and 516-b and the outer layer tenons 515-a and 515-b correspond to the lower heat exchange connecting pipe inner layer mortises 521-a and 521-b, the middle layer mortises 522-a and 522-b and the outer layer mortises 523-a and 523-b one by one, and the geothermal water inner pipe, the working medium inflow pipe, the geothermal water outflow pipe and the working medium outflow pipe are isolated and sealed under the action of the sealing ring.

The bottom heat exchange joint is formed by combining heat exchange joint external connecting pipes 543-a and 543-b, bottom joint outer pipes 536-a and 536-b, bottom joint middle pipes 537-a and 537-b, bottom joint inner pipes 538-a and 538-b, bottom joint external threaded pipes 542-a and 542-b, heat exchange joint bottom plates 544, 544-a and 544-b, heat exchange joint isolation plates 533, 533-a and 533-b, geothermal water connecting pipes 540-a and 540-b and 540-1-540-16; all the parts are made of metal materials, and aluminum alloy is adopted in the embodiment.

The outer connecting pipes 543-a and 543-b of the heat exchange joints, the outer pipes 536-a and 536-b of the bottom joints, the middle pipes 537-a and 537-b of the bottom joints, the inner pipes 538-a and 538-b of the bottom joints and the outer threaded pipes 542-a and 542-b of the bottom joints are all arranged on the base plates 544, 544-a and 544-b of the heat exchange joints; the heat exchange joint bottom plates 544, 544-a and 544-b are annular, and are welded with heat exchange joint external connecting pipes 543-a and 543-b, bottom joint outer pipes 536-a and 536-b and bottom joint middle pipes 537-a and 537-b at the upper side; the bottom connector inner pipes 538-a and 538-b penetrate through the heat exchange connector bottom plate and are welded with the heat exchange connector bottom plate on the side face; the lower side is welded with external threaded pipes 542-a and 542-b of the bottom joint.

The external connecting pipes 543-a and 543-b of the heat exchange joint are tubular structures, and the lower ends of the external connecting pipes are welded with the bottom plate of the heat exchange joint to form 544, 544-a and 544-b; the upper side is provided with internal threads which are called bottom joint internal threads 531-a and 531-b; the internal thread of the bottom joint is matched and screwed with the external threads 518-a and 518-b at the lower end of the heat exchange tube of the heat exchange connecting tube.

The bottom joint outer pipes 536-a and 536-b are tubular structures, and the lower ends of the bottom joint outer pipes are welded with the heat exchange joint bottom plate; the upper part is processed with bottom joint outer mortises 532-a and 532-b, the size and depth of the bottom joint outer mortises are completely the same as those of the outer layer mortises of the heat exchange connecting pipe, and a plurality of outer pipe side holes are processed at the bottom.

The bottom joint middle pipe is of a tubular structure, and the lower end of the bottom joint middle pipe is welded with the heat exchange joint bottom plate; the upper part is processed with bottom joint middle mortises 534-a and 534-b, the sizes and the depths of the bottom joint middle mortises 534-a and 534-b are completely the same as the middle mortises 522-a and 522-b of the heat exchange connecting pipe, and the bottom is processed with a plurality of middle pipe side holes.

The bottom joint inner pipe penetrates through the heat exchange joint bottom plate and is welded with the heat exchange joint bottom plate on the side surface; the upper part is processed with bottom joint inner mortises 535-a and 535-b, the size and the depth of the bottom joint inner mortises 535-a and 535-b are completely the same as the inner mortises 521-a and 521-b of the heat exchange connecting pipe; the lower part is processed into a lower mortise of a bottom joint; the lower mortise of the bottom joint is matched with the upper pipe wall of the pipe wall type thermovoltaic power generation base module.

The external thread pipes 542-a and 542-b of the bottom joint are tubular structures and are provided with external threads; the external thread specification matches with the internal thread 351-1, 351-2 of the outer pipe connector of the sleeve heat exchange section.

The heat exchange joint isolating plates 533, 533-a, 533-b are provided with a plurality of holes corresponding to the heat exchange joint bottom plates 544-a, 544-b, and correspond to the geothermal water connecting pipes 540-a, 540-b, 540-1, 540-2-540-16.

The heat exchange joint isolating plates 533, 533-a and 533-b are of annular structures, and the inner sides of the upper edges of the bottom joint outer pipes 536-a and 536-b are welded with the outer sides of the heat exchange joint isolating plates; the outer sides of the upper edges of the middle pipes 537-a and 537-b of the bottom joint are welded with the inner sides of the heat exchange joint isolation plates.

The external thread pipes 542-a and 542-b of the bottom joint are screwed with the external pipe connector 350 of the uppermost sleeve heat exchange section, and when the external thread pipes are screwed, the lower mortises 546-a and 546-b of the bottom joint are filled with sealing rings to be sealed with the upper pipe wall of the uppermost pipe wall type thermovoltaic power generation basic module.

The heat exchange connecting pipe at the bottommost side is screwed with the internal threads 531-a and 531-b of the bottom joint through external threads 518-a and 518-b at the lower end of the heat exchange pipe; when the bottom joint outer mortises 532-a and 532-b, the bottom joint middle mortises 534-a and 534-b and the bottom joint inner mortises 535-a and 535-b are screwed, sealing rings are added, so that the bottom joint outer pipes 536-a and 536-b, the bottom joint middle pipe 537-a 537-b and the bottom joint inner pipe 538-a 538-b are respectively in sealing butt joint with the outer layer mortises 515-a and 515-b, the bottom joint middle layer mortises 516-a and 516-b and the inner layer mortises 517-a and 517-b of the bottommost heat exchange connecting pipe.

The top heat exchange joint is composed of a top connecting disc 560, top joint external threaded pipes 551, 551-a, 551-b, top joint external tenons 552, 552-a, 552-b, top joint middle tenons 553, 553-a, 553-b, top joint internal tenons 554, 554-a, 554-b, a turbine working medium outflow pipe 557, a turbine working medium inflow pipe 558 and an internal and external hot water connecting pipe 559; are all made of metal materials.

The shapes and the heights of the external threads 551, 551-a and 551-b of the top joint are completely the same as those of the external threads 518-a and 518-b at the lower end of the heat exchange tube; the shapes and the heights of the top joint outer tenons 552, 552-a and 552-b are completely the same as those of the heat exchange connecting pipe outer tenons 515-a and 515-b; the shapes and the heights of the tenons 553, 553-a and 553-b in the top joint are completely the same as those of the tenons 516-a and 516-b in the middle layer of the heat exchange connecting pipe; the top joint inner tenons 554, 554-a, 554-b are identical in shape and height to the heat exchange connecting pipe inner tenons 517-a, 517-b.

The lower ends of the top connector disks are welded to the top sub male threaded pipes 551, 551-a, 551-b, the top sub male tenons 552, 552-a, 552-b, the top sub middle tenons 553, 553-a, 553-b, the top sub female tenons 554, 554-a, 554-b, respectively.

A top hot water inner joint 555 is arranged in the middle of the top connecting disc; a top hot water external interface 556 is arranged between the outer layer tenons 515-a and 515-b and the middle layer tenons 516-a and 516-b; a turbine working medium outlet pipe 558 is arranged between the outer layer tenon and the external threaded pipes 551551-a and 551-b of the top joint, and the inner hot water connecting pipe 559 and the outer hot water connecting pipe 559 are connected; turbine working medium inflow pipes 557 are arranged between the inner tenons 554, 554-a and 554-b and the middle tenons 516-a and 516-b of the connecting top joint.

(1) the bottom heat exchange joint is screwed with the uppermost sleeve heat exchange section outer pipe connector 350 through outer threaded pipes 542-a and 542-b of the bottom joint, and when the bottom heat exchange joint is screwed, the lower mortises 546-a and 546-b of the bottom joint are filled with sealing rings and sealed with the upper pipe wall of the uppermost pipe wall type thermovoltaic power generation base module;

(2) the heat exchange connecting pipe is screwed with the bottom joint internal threads 531-a and 531-b of the bottom heat exchange joint through the external threads 518-a and 518-b at the lower end of the heat exchange pipe;

(3) the heat exchange connecting pipes are screwed with the internal threads 524-a and 524-b at the upper end of the heat exchange pipe through the external threads 518-a and 518-b at the lower end of the heat exchange pipe, and the number of the screwed heat exchange connecting pipes is selected according to the requirement of the connecting length;

The turbine power generation module employed in the present embodiment is an ORC (organic rankine) generator. The ORC magnetic suspension generator produced by Guangzhou wine fast energy cooling and heating equipment Limited company is used, and the model is as follows: VWTWNC.

The working medium output by the working medium pump of the turbine power generation module ORC generator is input into a turbine working medium inflow pipe; and the turbine working medium outlet pipe outputs the heated working medium and is connected to an expansion machine working medium input interface of the ORC generator.

The electric energy output mode of the invention is as follows:

(1) the electric energy of the turbine generator is directly output, and an output power supply is called as a turbine power generation power supply.

In this example, "materials having a low thermal conductivity and a high elastic modulus" which are not particularly described are all glass fiber composite materials; the metal materials not specifically described are all aluminum alloys or stainless steel.

Claims

1. A deep well heat exchange casing geothermal in-situ thermovoltaic power generation device is characterized in that: the device consists of a water entry section (1), a commutator (2), a casing heat exchange section (5), a top thermovoltaic power generation module (6) It is composed of a turbine power generation module (7), and the water entry section (1), the commutator (2), and the casing heat exchange section (5) are all underground, and are connected in sequence from the deep to the surface; The top thermal photovoltaic power generation module is partly installed underground, partly on the ground, and the turbine power generation module is installed on the ground;

The water inlet section (1) is formed by connecting multiple water inlet pipes (110). One end of each water inlet pipe is processed into a water inlet external thread (112), and the other end is processed into a water inlet inner thread (113). The diameter, small diameter and pitch are equal, and the adjacent water inlet pipes are connected by external threads and internal threads at both ends to form the required length; the lowest point of the water inlet section (1) is the recharge inlet, and the highest point is the top interface of the water inlet section; the water inlet section The top interface is an external thread (112), the recharge inlet is an internal thread (113), and the top interface of the water inlet section and the water inlet pipe connecting thread (213) of the water inlet section connection interface of the commutator (2) are tightly connected by screwing;

The commutator (2) is formed by connecting three parts, a water inlet section connection port (210), four backfill water connectors (220-1 to 220-4), and a casing heat exchange section connection port (230). (2) Introduce the backfill water between the outer tube and the inner tube of the casing heat exchange section (5) to the connection interface (210) of the water inlet section through the backfill water connector, and screw it with the water inlet outer thread (112) at the top of the water inlet section. The recharge water is introduced into the water inlet section, and the recharge water is introduced into the ground from the recharge inlet at the bottom of the water inlet section;

The casing heat exchange section 5 is composed of an axial flow water pump section, a casing heat exchange section connector and a casing heat exchange section pipe. The casing heat exchange section connector is connected to the adjacent casing heat exchange section pipes, and is connected as required. any length;

The pipe of the casing heat exchange section is composed of the inner pipe of the casing heat exchange section and the outer pipe of the casing heat exchange section; the length of the inner pipe of the casing heat exchange section and the outer pipe of the casing heat exchange section are equal, and the length is set as Hn;

The casing heat exchange section connector is composed of the casing heat exchange section outer tube connector, the casing heat exchange section inner tube connector, and the casing heat exchange section clamps; the casing heat exchange section clamps fix the casing heat exchange section The axis between the outer tube connector and the inner tube connector of the casing heat exchange section; the inner tube of the casing heat exchange section adjacent to the inner tube connector of the casing heat exchange section, the outer tube connector of the casing heat exchange section connects the phase The outer tube of the adjacent casing heat exchange section;

The axial flow water pump section is composed of the inner tube of the casing heat exchange section and the well submersible pump. The well submersible pump is installed in the middle of the inner tube of the casing heat exchange section. The axial flow pump is sealed with a sealing ring;

The top thermovoltaic power generation module (6) is composed of a tube wall type thermovoltaic power generation section and a top heat exchange module;

The tube wall type thermovoltaic power generation section is composed of tube wall type thermovoltaic power generation basic modules;

The tube-wall type thermovoltaic power generation base module consists of the tube-wall type thermovoltaic power generation base module shell (471), the tube-wall type thermovoltaic power generation module (472), the tube-wall type thermovoltaic power generation base module inner layer (473), the thermovoltaic module The sealing ring (474-1, 474-2) of the support frame tube wall type thermovoltaic power generation base module consists of:

The top heat exchange module includes heat exchange connecting pipes, bottom heat exchange joints and top heat exchange joints;

The turbine power generation module (7) adopts an ORC generator, and the working fluid output by the working fluid pump of the generator is input into the turbine working fluid inflow pipe; the turbine working fluid outflow pipe outputs the heated working fluid, and is connected to the ORC generator. Expander working fluid input interface.

2. deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 1, is characterized in that:

The water inlet section connection port (210) of the commutator is connected by the water inlet section to the casing (212) and the recharge water to the top cover (214)

Composition; the connection shell of the water inlet is made of metal material, which is a tubular structure. The top cover (214) is welded for the refilling water connection, and the lower part is processed into a water inlet pipe connection thread (213); The thread (112) is screwed together;

The refill water connectors (220-1 to 220-4) are made of metal materials, the exterior is solid, which is called the main fan-ring column (224), and the interior is hollowed out as the hollowed-out fan-ring column (223), and the top of the main fan-ring column is The surface is the top surface (222) of the refill water connector; the bottom surface of the main fan ring column is called the bottom surface of the refill water connector (221);

The casing heat exchange section connection interface (230) is composed of the casing heat exchange section interface bottom plate (234), the casing heat exchange section outer pipe interface (231), and the casing heat exchange section inner pipe interface (232). The outer pipe interface (231) of the hot section and the inner pipe interface (232) of the heat exchange section of the casing are welded on the bottom plate (234) of the interface of the heat exchange section of the casing, and the welded part is sealed;

The interface bottom plate (234) of the casing heat exchange section is in the shape of a disc, and the radius of the disc is the same as the radius of the recharge water connection top cover (214), which is Ra; the four casing heat exchange section recharge water inlets are evenly distributed on the upper side. (233-1, 233-2, 233-3, 233-4); the shape and size of the recharge water inlets of the four casing heat exchange sections are connected to the recharge water connection ports of the top cover (211-1, 211-2 -211-3, 211-4) are the same in shape and size, and the hollowed-out position is also the same as the refill water connection interface of the refill water connection top cover;

The outermost side of the interface bottom plate (234) of the casing heat exchange section is the welding place (235) of the outer pipe interface (231) of the casing heat exchange section, which is used for welding the outer pipe interface of the casing heat exchange section; the middle of the bottom plate of the casing heat exchange section interface The hollowed-out area is called the geothermal water inlet (244) of the casing heat exchange section, and the radius of the geothermal water inlet of the casing heat exchange section is set to be r2; the geothermal water inlet of the casing heat exchange section (244) The outer side is the welding place (236) of the inner pipe interface (232) of the heat exchange section of the casing;

The outer pipe interface (231) of the casing heat exchange section is a tubular structure and is made of metal material. The outer radius is the same as the radius of the bottom plate of the casing heat exchange section interface, which is Ra. If the inner radius is r6, the inner radius r6 is larger than that of the recharge water connector. The outer circle radius of the cross section is R1; the lower side is welded with the bottom plate of the interface of the heat exchange section of the casing, and the upper side is processed into an inner thread called the inner thread (237) of the interface of the outer pipe of the heat exchange section of the casing, and the outer pipe of the heat exchange section of the casing is connected with the inner thread through the inner thread. Rotation; set the height of the outer pipe interface of the casing heat exchange section as H1; the height of the inner thread of the outer pipe interface of the casing heat exchange section is H2, the small diameter of the inner thread is 2r4, and r4 is greater than the inner radius of the outer pipe interface of the casing heat exchange section r6;

The inner pipe interface of the casing heat exchange section (232) The inner pipe interface of the casing heat exchange section is a tubular structure, made of metal material, and the inner radius is the same as the geothermal water inlet radius of the casing heat exchange section on the bottom plate of the casing heat exchange section interface. , is r2, and the outer radius is set to r5; the lower side is welded with the bottom plate of the interface of the casing heat exchange section, and the upper side is processed into an external thread, which is called the outer thread (239) of the inner pipe interface of the casing heat exchange section. The inner tube of the hot section is screwed together; the height of the inner tube interface of the casing heat exchange section is the same as the height of the outer tube interface of the casing heat exchange section, which is H1; the height of the outer thread of the inner tube interface of the casing heat exchange section is the same as that of the outer tube of the casing heat exchange section. The height of the internal thread of the interface is the same, which is H2, and the major diameter of the external thread is 2r3.

3. deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 1, is characterized in that:

The pipes of the casing heat exchange section are divided into an inner pipe (310) of the casing heat exchange section and an outer pipe (320) of the casing heat exchange section;

The inner tube (310) of the casing heat exchange section is a tubular structure, and is made of a material with low thermal conductivity and high elastic modulus. is r2; the outer radius of the inner tube of the heat exchange section of the casing is the same as the outer radius of the interface of the inner tube of the heat exchange section of the casing, which is r5; The inner pipe thread (311-1, 311-2) matches with the outer thread (239) of the inner pipe interface of the heat exchange section of the casing; The outer thread (239) of the inner pipe interface of the pipe heat exchange section is screwed together to form a whole;

The outer tube (320) of the casing heat exchange section is a tubular structure and is made of metal material. The inner radius of the outer tube of the casing heat exchange section is the same as the inner radius of the interface of the outer tube of the casing heat exchange section, which is r6; the outer tube of the casing heat exchange section is r6; The outer radius is the same as the outer radius of the outer pipe interface of the casing heat exchange section, which is Ra; both ends of the outer pipe of the casing heat exchange section are processed into external threads, which are called the outer pipe external threads of the casing heat exchange section (321-1, 321- 2), which matches the inner thread (237) of the outer pipe interface of the casing heat exchange section; the outer pipe of the lowermost casing heat exchange section passes through the outer thread of the casing heat exchange section and the inner thread of the outer pipe interface of the casing heat exchange section (237) twist and combine to form a whole;

The casing heat exchange section connector consists of the casing heat exchange section outer pipe connector (350), the casing heat exchange section inner pipe connector (340), the casing heat exchange section clamps (330-1, 330-2, 330-3, 330-4) composition;

The inner tube connector (340) in the heat exchange section of the casing is used to connect the inner tubes of the adjacent heat exchange section of the casing. It is tubular and is made of materials with low thermal conductivity and high elastic modulus; The inner radius of the connector (340) is the same as the inner radius of the inner tube interface of the casing heat exchange section, which is r2; the outer radius of the inner tube connector of the casing heat exchange section is the same as the outer radius of the inner tube interface of the casing heat exchange section, which is r5; The two ends of the inner tube connector of the tube heat exchange section are processed into external threads, which are called the outer threads of the inner tube connector of the casing heat exchange section (341-1, 341-2), which are the same as the inner tube threads of the casing heat exchange section (311-1, 341-2). 1. 311-2) matching; the height of the outer thread of the inner pipe connector of the casing heat exchange section is the same as the inner thread height of the outer pipe interface of the casing heat exchange section, which is H2, and the outer thread of the inner pipe connector of the casing heat exchange section is large diameter is 2r3;

Between the outer threads of the inner tube connector of the casing heat exchange section at both ends is the casing heat exchange section inner tube connector support body (342); if the height of the inner tube connector support body is h3, then h3 is greater than the casing heat exchange section Segment card firmware height h1;

Four inner tube clamping grooves (343-1, 343-2, 343-3, 343-4) are evenly distributed on the inner tube connector support body (342) of the heat exchange section of the casing, using The clamps are embedded in the heat exchange section of the casing; the clamping groove of the inner tube of the heat exchange section of the casing is hollowed out according to the shape of the card of the inner tube of the heat exchange section of the casing;

The outer tube connector (350) of the casing heat exchange section is used to connect the outer tubes of the adjacent casing heat exchange section. The inner radius of the outer tube interface of the section is the same, which is r6; the outer radius of the outer tube connector of the casing heat exchange section is the same as the outer radius of the outer tube interface of the casing heat exchange section, which is Ra; both ends of the outer tube connector of the casing heat exchange section are processed The inner thread is called the inner thread (351-1, 351-2) of the outer pipe connector of the heat exchange section of the casing, which matches the outer thread (321-1, 321-2) of the outer pipe of the heat exchange section of the casing; the casing The height of the inner thread of the outer tube connector of the heat exchange section is the same as the height of the inner thread of the outer tube interface of the casing heat exchange section, which is H2, and the small diameter of the inner thread of the outer tube connector of the casing heat exchange section is 2r4;

Between the inner threads of the outer tube connectors of the casing heat exchange section at both ends is the casing heat exchange section outer tube connector support body 352; if the height of the outer tube connector support body is h3, then h3 is greater than the casing heat exchange section card firmware height h1;

Four outer tube clamping grooves (353-1, 353-2, 353-3, 353-4) are evenly distributed on the outer tube connector support body of the casing heat exchange section, which are used for inserting the sleeve The tube heat exchange section is clamped; the outer tube clamp groove of the casing heat exchange section is hollowed out according to the shape of the outer tube clamp plate of the casing heat exchange section;

The clamps (330, 330-1, 330-2, 330-3, 330-4) of the heat exchange section of the casing are clamped by the outer tube clamping piece (331), the positioning piece (332) of the inner and outer tubes, and the sleeve of the heat exchange section of the casing. The inner tube clip (333) in the tube heat exchange section is composed of the outer tube clip in the shape of a column with an arc cross section, and the column height is h1; ; The cross-section of the inner tube fixing sheet is an arc column, and the height of the column is h1; the radius of the arc is greater than r3 and slightly smaller than the outer radius r5 of the inner tube of the casing heat exchange section; the outer tube fixing sheet (331) is welded on both sides of the inner and outer tube positioning sheets ) and the inner tube fixing piece (332), so that the inner and outer tube positioning piece (332), the outer tube fixing piece (331) of the casing heat exchange section and the inner tube fixing piece (333) of the casing heat exchange section are integrated into a whole .

4. The deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 1 is characterized in that:

In the top thermovoltaic power generation module (6), the shell (471) of the tube-wall type thermovoltaic power generation basic module has a tubular structure and is made of a metal material with good thermal conductivity; The inner radius of the pipe interface in the tube heat exchange section is the same, which is r2; the outer radius of the shell of the tube wall type thermovoltaic power generation basic module is the same as the outer radius of the inner tube interface of the casing heat exchange section, which is r5; the shell of the tube wall type thermovoltaic power generation basic module The lower end is processed into internal threads, which is called the inner thread (475) of the shell of the tube-wall type thermovoltaic power generation base module; the upper end of the tube-wall type thermovoltaic power generation base module shell is processed into external threads, which is called the outer shell of the tube-wall type thermovoltaic power generation base module shell. The thread (476) is the same as the outer thread (239) of the inner pipe interface of the heat exchange section of the casing; the inner thread of the shell of the basic module of the tube-wall type thermovoltaic power generation matches the outer thread of the outer shell of the basic module of the tube-wall type thermovoltaic power generation module. A tubular structure is formed; the height of the inner thread of the tube wall type thermovoltaic power generation base module and the outer thread height of the tube wall type thermovoltaic power generation base module is H2, and the height of the shell of the tube wall type thermovoltaic power generation base module is Hn+h3+H2;

The tube-wall type thermovoltaic power generation module (472) is composed of a plurality of thermoelectric power generation chips; the cold end of the thermoelectric power generation chip is welded on the inside of the shell (471) of the tube-wall type thermovoltaic power generation basic module, and the hot end of the thermoelectric power generation chip is welded on the tube wall The outer side of the inner layer (473) of the basic module of thermovoltaic power generation;

The thermoelectric power generation chips are aligned in the horizontal and vertical directions, in rows in the horizontal direction and in columns in the vertical direction; the number of thermoelectric power generation chips in each row is the same, and the number of thermoelectric power generation chips in each column is the same; the connection relationship between the thermoelectric power generation chips in each row is in series ;After the thermoelectric power generation chips in each row are connected in series, the output power lines of each row are connected in parallel; form the power output end of the tube wall type thermovoltaic power generation basic module;

The thermovoltaic module support frame is composed of a thermovoltaic module support frame body (461) and four thermovoltaic module support frame side ears (462-1, 462-2, 462-3, 462-4), all of which are made of metal materials ; The shape of the side ears of the thermovoltaic module support frame is the same as that of the sleeve heat exchange section clamp (330), and is symmetrically welded to the outside of the thermovoltaic module support frame body; the thermovoltaic module support frame body is a tubular structure with a height of h1; The frame is used to limit the distance between the basic module of tube-wall type thermal photovoltaic power generation and the outer tube connector of the casing heat exchange section, and is used in conjunction with the outer tube connector of the water flow section;

On the upper and lower ends of the tube-wall type thermovoltaic power generation module, there are tube-wall type thermovoltaic power generation base module sealing rings (474-1, 474-2), which are embedded in the tube-wall type thermovoltaic power generation base module shell and the tube-wall type thermovoltaic power generation base module shell and In the middle of the inner layer of the power generation base module, the tube wall type thermovoltaic power generation module is sealed;

The inner layer (473) of the tube-wall type thermovoltaic power generation base module is a tubular structure with a height of Hn+h3; the upper end is flush with the outer shell of the tube-wall type thermovoltaic power generation base module; the outer diameter is r2 minus 2 times the tube-wall type thermovoltaic power generation module. The thickness of the power generation module;

In the top heat exchange module, the heat exchange connection pipe is a tubular structure with a thicker wall and is made of metal material; the hollow part in the middle of the heat exchange pipe connection is the channel through which the inner pipe (511) of the geothermal water flows; On the wall, from the inside to the outside, on the concentric circles of the section, there are three layers of cylindrical cavities parallel to the axial direction of the heat exchange connecting pipe, which are the working fluid inflow pipes (512-a, 512-b), the geothermal Water outflow pipes (513-a, 513-b) and working medium outflow pipes (514-a, 514-b);

Below the heat exchange connecting pipe: there is a ring-shaped convex edge between the working fluid inflow pipe and the inner pipe of the geothermal water, which is called the inner tenon (517-a, 517-b); There is a circular convex edge in section between the water outflow pipes, which is called the middle tenon (516-a, 516-b). It is the outer tenon (515-a, 515-b); the working fluid flows out of the outside of the pipe and is processed into an external thread, which is called the external thread at the lower end of the heat exchange tube (518-a, 518-b);

On the top of the heat exchange connecting pipe: there is a circular concave edge in cross-section between the inflow pipe of the working medium and the inner pipe of the geothermal water, which is called the inner mortise (521-a, 521-b); There is a circular concave edge in section between the hot water outflow pipe, which is called the middle mortise (522-a, 522-b); the section between the geothermal water outflow pipe and the working fluid outflow pipe is a circular concave edge , called the outer mortise (523-a, 523-b); the working fluid flows out of the outside of the pipe and is processed into an internal thread, which is called the internal thread (524-a, 524-b) at the upper end of the heat exchange tube;

Adjacent heat exchange connecting pipes are connected by screwing; the outer thread (518-a, 518-b) of the lower end of the heat exchange pipe is connected to the inner thread (524-a, 524-b) of the upper end of the heat exchange pipe of the next adjacent heat exchange connecting pipe ) When screwing together, the inner mortise (521-a, 521-b), the middle mortise (522-a, 522-b), and the outer mortise (523-a, 523-b) are added with sealing rings;

When the adjacent heat exchange connecting pipes are connected by screwing, the inner tenon (517-a, 517-b), the middle tenon (516-a, 516-b), the outer tenon (515-a, 517-b) of the upper heat exchange connecting pipe. 515-b) Inner mortise (521-a, 521-b), middle mortise (522-a, 522-b), and outer mortise (523-a, 523-b) with the lower heat exchange connection tube One-to-one correspondence, and under the action of the sealing ring, the geothermal water inner pipe, the working medium inflow pipe, the geothermal water outflow pipe and the working medium outflow pipe are isolated and sealed;

The protruding height of the inner mortise, the middle mortise and the outer mortise is larger than the concave depth of the inner mortise, the middle mortise and the outer mortise. The working medium inflow pipes are connected through a homogeneous annular channel, the geothermal water outflow pipes of the same pipeline are connected through a homogeneous annular channel; the working medium outflow pipes of the same pipeline are connected through a homogeneous annular channel.

5. The deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 1, characterized in that:

In the top heat exchange module, the bottom heat exchange joints are composed of external connection pipes (543-a, 543-b) of the heat exchange joints, outer pipes (536-a, 536-b) of the bottom joints, and middle pipes (537-a, 536-b) of the bottom joints. 537-b), bottom joint inner pipe (538-a 538-b), bottom joint male thread pipe (542-a 542-b), heat exchange joint bottom plate (544, 544-a, 544-b), heat exchange The joint isolation plate (533, 533-a, 533-b) and the geothermal water connection pipes (540-a, 540-b, 540-1~540-16) are combined, and all parts are made of metal materials;

External connecting pipes of heat exchange joints (543-a, 543-b), outer pipes of bottom joints (536-a, 536-b), middle pipes of bottom joints (537-a, 537-b), inner pipes of bottom joints (538 -a, 538-b), bottom joint male threaded pipes ((542-a, 542-b) are installed on the heat exchange joint bottom plate (544, 544-a, 544-b); heat exchange joint bottom plate (544, 544-b) 544-a, 544-b) are annular, and the outer connecting pipes (543-a, 543-b) of the heat exchange joints, the outer pipes of the bottom joints (536-a, 536-b), and the middle pipes of the bottom joints ( 537-a, 537-b); the bottom joint inner pipe (538-a, 538-b) is welded with the heat exchange joint bottom plate on the side through the heat exchange joint bottom plate; the bottom joint external thread pipe (542-a, 542 is welded on the bottom side) -b);

The external connecting pipes (543-a, 543-b) of the heat exchange joint are tubular structures, and the lower end is welded with the bottom plate of the heat exchange joint (544, 544-a, 544-b); the upper side is processed with internal threads, which are called bottom joint internal threads (531-a, 531-b); the inner thread of the bottom joint matches and screwed together with the outer thread (518-a, 518-b) of the lower end of the heat exchange tube of the heat exchange connecting pipe;

The bottom joint outer tube (536-a, 536-b) is a tubular structure, and the lower end is welded with the heat exchange joint bottom plate; the upper part is machined with the bottom joint outer mortise (532-a, 532-b), the size of the bottom joint outer mortise It is exactly the same as the outer mortise (523-a, 523-b) of the depth and heat exchange connecting pipe, and there are several side holes of the outer pipe processed at the bottom;

The tube in the bottom joint is a tubular structure, and the lower end is welded with the bottom plate of the heat exchange joint; the upper part is machined with mortise (534-a, 534-b) in the bottom joint, the size of the mortise (534-a, 534-b) in the bottom joint It is exactly the same as the middle mortise (522-a, 522-b) of the depth and heat exchange connecting pipe, and there are several side holes of the middle pipe processed at the bottom;

The inner tube of the bottom joint passes through the bottom plate of the heat exchange joint, and is welded with the bottom plate of the heat exchange joint on the side; b) The size and depth are exactly the same as the inner mortise (521-a, 521-b) of the heat exchange connecting pipe; the lower part is processed into the lower mortise of the bottom joint; the lower mortise of the bottom joint and the tube wall type thermovoltaic power generation foundation The upper end of the module is anastomosed;

The bottom joint external threaded pipes (542-a, 542-b) are tubular structures with external threads; the external thread specifications match the internal threads (351-1, 351-2) of the outer pipe connectors of the casing heat exchange section;

The heat exchange joint isolation plate (533, 533-a, 533-b) and the heat exchange joint bottom plate (544-a, 544-b) have a plurality of holes corresponding to the positions, which are connected with the geothermal water connection pipes (540-a, 540- b, 540-1, 540-2～540-16) corresponding;

The upper part of the geothermal water connection pipe is welded with the heat exchange joint isolation plate, and the lower part is welded with the heat exchange joint bottom plate;

The heat exchange joint isolation plates (533, 533-a, 533-b) are annular structures, and the inner side of the upper edge of the bottom joint outer pipe (536-a, 536-b) is welded to the outside of the heat exchange joint isolation plate; the bottom joint middle pipe ( 537-a, 537-b) The outer side of the upper side is welded to the inner side of the heat exchange joint isolation plate;

The bottom joint outer threaded pipe (542-a, 542-b) is screwed with the outer tube connector (350) of the uppermost casing heat exchange section. When screwed together, the bottom joint lower mortise (546-a, 546-b) ) into the sealing ring to seal with the upper tube wall of the uppermost tube wall type thermovoltaic power generation base module;

The lowermost heat exchange connecting pipe is screwed together with the bottom joint internal thread (531-a, 531-b) through the external thread (518-a, 518-b) at the lower end of the heat exchange pipe; when screwed together, the outer mortise ( 532-a, 532-b), the mortise in the bottom joint (534-a, 534-b), the inner mortise of the bottom joint (535-a, 535-b) are added with sealing rings, so that the bottom joint outer tube (536- a, 536-b), bottom joint middle pipe (537-a, 537-b), bottom joint inner pipe (538-a, 538-b) are respectively connected with the outer tenon (515- a, 515-b), the bottom joint, the middle tenon (516-a, 516-b), and the inner tenon (517-a, 517-b) are sealed butt joints respectively;

The top heat exchange joint consists of the top connecting disc (560), the top joint external thread pipe (551, 551-a, 551-b), the top joint external tenon (552, 552-a, 552-b), the top joint tenon (553, 553-a, 553-b), top joint inner tenon (554, 554-a, 554-b), turbine working fluid outflow pipe (557), turbine working fluid inflow pipe (558), internal and external heat The water connection pipe (559) is composed; all are metal materials;

The shape and height of the external thread pipes 551, 551-a and 551-b of the top joint are exactly the same as the external threads 518-a and 518-b of the lower end of the heat exchange tube; the shape and height of the external tenon 552, 552-a and 552-b of the top joint The shape and height of the tenons (553, 553-a, 553-b) in the top joint are the same as the tenons (515-a, 515-b) in the outer layer of the heat exchange connecting pipe; 516-b) is exactly the same; the shape and height of the inner tenon (554, 554-a, 554-b) of the top joint are exactly the same as the inner tenon (517-a, 517-b) of the heat exchange connecting pipe;

The lower end of the top connecting disc is respectively connected with the top joint external threaded pipe (551, 551-a, 551-b), the top joint external tenon (552, 552-a, 552-b), the top joint tenon (553, 553-a) , 553-b), and the inner tenon (554, 554-a, 554-b) of the top joint are welded;

There is a top hot water inner port (555) in the middle of the top connecting disc; there is a top hot water outer port (556) between the outer tenon (552-a, 552-b) and the middle tenon (553-a, 553-b). ); There is a turbine working fluid outflow pipe (558) between the outer tenon and the top joint external threaded pipe (551, 551-a, 551-b), and the inner and outer hot water connection pipe (559) is connected to the top hot water inner interface ( 555) and the top hot water external interface (556); there is a turbine working fluid inflow pipe (557) between the top joint inner tenon (554, 554-a, 554-b) and the middle tenon (553-a, 553-b) ).

6. The deep well heat exchange casing geothermal in-situ thermovoltaic power generation device according to claim 3, is characterized in that:

The connection relationship of each component of the casing heat exchange section is as follows:

(1) The lower end of the axial flow water pump section is screwed together with the inner pipe interface (232) of the casing heat exchange section of the connection interface of the casing heat exchange section; the lower end of the outer tube of the bottommost casing heat exchange section is connected with the casing heat exchange section The outer pipe interface (231) of the casing heat exchange section is screwed together;

(2) The upper end of the axial flow water pump section is screwed with the inner tube connector of the casing heat exchange section, the upper end of the outer tube of the casing heat exchange section at the bottom end is screwed together with the outer tube connector of the casing heat exchange section, and the casing heat exchange section is screwed together. Four casing heat exchange section clamps are embedded between the inner tube connector and the outer tube connector of the casing heat exchange section;

(3) The lower end of the inner tube of the heat exchange section of the casing at the bottom end is screwed with the connector of the inner tube of the heat exchange section of the casing; the lower end of the outer tube of the heat exchange section of the casing at the second bottom end is screwed to the connector of the outer tube of the heat exchange section of the casing ;

(4) The upper end of the inner tube of the casing heat exchange section is screwed with the inner tube connector of the casing heat exchange section; the upper end of the outer tube of the casing heat exchange section is screwed together with the outer tube connector of the casing heat exchange section; the casing heat exchange section is screwed together; Four casing heat exchange section clamps are embedded between the inner tube connector and the outer tube connector of the casing heat exchange section;

(5) The lower end of the inner tube of the next casing heat exchange section is screwed with the inner tube connector of the previous casing heat exchange section; the lower end of the outer tube of the next casing heat exchange section is connected with the outer tube connector of the previous casing heat exchange section twist;

(6) The upper end of the inner tube of the casing heat exchange section is screwed together with the inner tube connector of the next casing heat exchange section; the upper end of the outer tube of the casing heat exchange section is screwed with the outer tube connector of the next casing heat exchange section; Four casing heat exchange section clamps are embedded between the inner tube connector of the tube heat exchange section and the outer tube connector of the casing heat exchange section;

(7) Repeat (5) and (6) to connect the casing heat exchange section of the required length.

7. The deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 4 is characterized in that:

The connection relationship of the tube wall type thermovoltaic power generation section is:

The tube wall type thermovoltaic power generation basic module section is assembled on the upper end of the casing heat exchange section;

(1) Rotate a casing heat exchange section inner tube connector on the topmost casing heat exchange section inner tube, and screw a casing casing heat exchange section outer tube on the top casing casing heat exchange section outer tube The connector, embedded four casing heat exchange section clamps between the inner tube connector of the casing heat exchange section and the outer tube connector of the casing heat exchange section;

(2) Rotate the tube wall type thermovoltaic power generation basic module on the upper end of the tube connector in the heat exchange section of the casing;

(3) Screw the outer tube of the casing heat exchange section on the upper end of the outer tube connector of the casing heat exchange section, and screw the outer tube connector of the casing heat exchange section on the outer tube of the casing heat exchange section; Inside the outer tube connector of the heat exchange section, the support frame of the thermovoltaic module is embedded;

(4) The upper end of the tube-wall type thermovoltaic power generation base module is screwed to the next tube-wall type thermovoltaic power generation base module; the number of tube-wall type thermovoltaic power generation base modules is determined according to the required height of the tube-wall type thermovoltaic power generation base module segment;

(5) Screw the outer tube of the next casing heat exchange section on the upper end of the outer tube connector of the casing heat exchange section, and screw the outer tube connector of the casing heat exchange section on the outer tube of the casing heat exchange section; Inside the outer tube connector of the casing heat exchange section, the thermovoltaic module support frame is embedded, and the required number is determined according to the height of the tube wall type thermovoltaic power generation basic module section.

8. The deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 4, characterized in that:

The connection relationship of the top thermovoltaic power generation module is:

(1) The bottom heat exchange joint is screwed together with the outer pipe connector (350) of the uppermost casing heat exchange section through the bottom joint outer threaded pipes (542-a, 542-b), when screwed together, the bottom joint lowers the mortise (546-a, 546-b) install the sealing ring to seal with the upper end tube wall of the uppermost tube wall type thermovoltaic power generation base module;

(2) The heat exchange connecting pipe is screwed together with the bottom joint inner thread (531-a, 531-b) of the bottom heat exchange joint through the outer thread (518-a, 518-b) of the lower end of the heat exchange pipe;

(3) The upper heat exchange connecting pipe is screwed together with the heat exchange pipe upper inner thread (524-a, 524-b) of the lower heat exchange connecting pipe through the outer thread (518-a, 518-b) at the lower end of the heat exchange pipe , select the number of revolving heat exchange connecting pipes according to the connection length requirements;

(4) On the upper end of the top heat exchange connecting pipe, screw a top heat exchange joint.

9. The deep well heat exchange casing geothermal in-situ thermovoltaic power generation device as claimed in claim 1, characterized in that:

The power output mode of the power generation device is:

(1) The electric energy of the turbine generator is directly output, and the output power is called the turbine power supply;

(2) The power supply of each tube-wall-type thermovoltaic power generation basic module is output in parallel, and the output power is called the tube-wall thermovoltaic power supply.