CN214791378U

CN214791378U - Open heat exchange system for intermediate-deep geothermal water

Info

Publication number: CN214791378U
Application number: CN202120605287.6U
Authority: CN
Inventors: 李强
Original assignee: China Coal Hydrologic Bureau Group Co Ltd
Current assignee: China Coal Hydrologic Bureau Group Co Ltd
Priority date: 2021-03-24
Filing date: 2021-03-24
Publication date: 2021-11-19
Anticipated expiration: 2031-03-24

Abstract

The utility model relates to an open heat exchange system for geothermal water in middle and deep layers, which comprises a working well, a water replenishing pipe, a water return pipe and a heat exchanger, wherein the heat exchanger comprises a shell and a heat exchange piece fixedly installed in the shell; a water pump is fixedly arranged on the water return pipe. The beneficial effects of the utility model are that simple structure, reasonable in design both can keep the liquid level in the work well to keep setting for liquid level department all the time, avoids the ground to sink, again can the current geothermal well resource of make full use of use for the user to use, avoids current heating facility investment extravagant, guarantee safe and reliable heat supply, energy-concerving and environment-protective.

Description

Open heat exchange system for intermediate-deep geothermal water

Technical Field

The utility model relates to a heat supply technical field, concretely relates to open heat transfer system of middle and deep layer geothermal water.

Background

With the national emphasis on ecological environment, ground settlement control is one of the key jobs concerned by governments at all levels. Aiming at the increasingly prominent ground settlement problem, large-scale geothermal well centralized shut-down is carried out in the north China, and heat supply gaps and hidden dangers brought by the large-scale geothermal well centralized shut-down are generated. The main reason for shutting down the geothermal well is that the ground subsides because the underground water is utilized disorderly and the same-layer recharge is not carried out according to the regulations.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an open heat transfer system of middle and deep geothermal water is provided, aim at solving above-mentioned technical problem.

The utility model provides an above-mentioned technical problem's technical scheme as follows:

an open type heat exchange system for medium-deep geothermal water comprises a working well, a water replenishing pipe, a water return pipe and a heat exchanger, wherein the heat exchanger comprises a shell and a heat exchange piece fixedly installed in the shell; and a water pump is fixedly arranged on the water return pipe.

The utility model has the advantages that: in the operation process, the heat of geothermal water is obtained through the heat exchanger, the existing geothermal well resources are fully utilized for users to use, the investment waste of the existing heat supply facilities is avoided, the safe and reliable heat supply is guaranteed, and the energy conservation and the environmental protection are realized; in addition, water after heat exchange of the heat exchanger is sent into the working well from the water replenishing pipe, and meanwhile water in the working well is discharged to the heat exchanger through the water return pipe, so that the liquid level inside the working well is stable, and the ground is prevented from sinking. The utility model discloses simple structure, reasonable in design both can keep the liquid level in the work well to be in setting for liquid level department all the time, avoids ground to sink.

On the basis of the technical scheme, the utility model discloses can also do following improvement.

The temperature measuring device is fixedly installed in the working well, is in communication connection with the controller and is used for detecting the water temperature in the working well and sending a corresponding temperature signal to the controller.

The beneficial effect who adopts above-mentioned further scheme is that the operation in-process, through the inside temperature of temperature measurement spare real-time supervision working well to send the temperature signal who corresponds to controller, so that the staff in time learns the inside temperature condition of working well.

Furthermore, the temperature measuring part is a temperature measuring optical fiber or a temperature sensor.

The beneficial effects of adopting above-mentioned further scheme are that simple structure, the accuracy is high, and it is convenient to measure.

And the water level measuring part is fixedly arranged in the working well and is in communication connection with the controller.

The beneficial effect who adopts above-mentioned further scheme is that the operation in-process, through the inside water level of water level measurement spare real-time supervision working well to send the water level signal who corresponds for the controller, so that the staff in time learns the inside water level condition of working well, when the inside water level of working well is less than the settlement water level, the staff need in time handle.

Further, the water level measuring piece is a water level meter or a water level measuring optical fiber.

Further, still include the alarm, the alarm with the controller communication is connected.

The beneficial effect of adopting the further proposal is that the temperature and/or water level signal is received by the controller and judged and analyzed during the operation process; when the water level is lower than the set water level or the temperature is lower than the set temperature, the controller controls the alarm to give an alarm so that the worker can know and process the alarm in time.

The water inlet and the water outlet of the evaporator are respectively communicated with the water return port and the water outlet of the heat exchange piece through pipelines; and a first circulating pump is fixedly arranged on a pipeline between the water outlet of the heat exchange piece and the water inlet of the evaporator.

The beneficial effects of adopting above-mentioned further scheme are that in the operation process, acquire geothermal water's heat through the heat exchanger, further utilize geothermal resources through the converter simultaneously, make full use of current geothermal well resource is in order to supply the user to use, avoid current heating facility investment waste, guarantee safe and reliable heat supply, energy-concerving and environment-protective.

The converter further comprises a user side, the converter further comprises a condenser for exchanging heat with the evaporator, and a water outlet and a water return port of the user side are respectively communicated with a water inlet and a water outlet of the condenser through pipelines; and a circulating pump II is fixedly installed on a pipeline between the water return port of the user side and the water inlet of the condenser.

The beneficial effects of adopting above-mentioned further scheme are simple structure, reasonable in design, make full use of current geothermal well resource for the user to use, avoid current heating facility investment waste, guarantee safe and reliable heat supply, energy-concerving and environment-protective.

Further, one side of the first circulating pump and/or the second circulating pump is also connected with a standby pump in parallel, a water inlet and a water outlet of each standby pump are respectively communicated with corresponding pipelines through standby pipelines, and each standby pipeline is fixedly provided with a valve.

The beneficial effects of adopting above-mentioned further scheme are simple structure, reasonable in design sets up the stand-by pump so that entire system still can normal operating, safe and reliable when the circulating pump breaks down.

Drawings

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

fig. 2 is a schematic structural diagram of the interior of the working well of the present invention.

In the drawings, the components represented by the respective reference numerals are listed below:

1. the system comprises a working well, 2, a water replenishing pipe, 3, a water return pipe, 4, a temperature measuring part, 5, a controller, 6, a water level measuring part, 7, an alarm, 8, a heat exchanger, 9, a converter, 10, a first circulating pump, 11, a user side, 12, a second circulating pump, 13, a standby pump, 14, a valve, 15 and a water pump.

Detailed Description

The principles and features of the present invention are described below in conjunction with the following drawings, the examples given are only intended to illustrate the present invention and are not intended to limit the scope of the present invention.

As shown in fig. 1 and 2, the utility model provides an open heat exchange system for middle-deep geothermal water, which comprises a working well 1, a water replenishing pipe 2, a water return pipe 3 and a heat exchanger 8, wherein the heat exchanger 8 is positioned outside the working well 1 and comprises a shell and a heat exchange part fixedly installed in the shell, a water inlet of the shell is communicated with the bottom of the working well 1 through the water return pipe 3, and a water outlet of the shell is communicated with a well mouth of the working well 1 through one end of the water replenishing pipe 2; the return pipe 3 is fixedly installed in the working well 1, the lower end of the return pipe extends downwards to the bottom of the working well 1, and the upper end of the return pipe extends upwards to the wellhead return pipe 3 of the working well 1 and is fixedly provided with a water pump 15. In the operation process, the heat of geothermal water is obtained through the heat exchanger 8, the existing geothermal well resources are fully utilized for users to use, the investment waste of the existing heat supply facilities is avoided, the safe and reliable heat supply is guaranteed, and the energy conservation and the environmental protection are realized; water after the heat exchanger 8 heat transfer is sent into work well 1 with water from moisturizing pipe 2 in, and the water in the work well 1 is arranged by wet return 3 and is carried out the heat transfer and handle in the heat exchanger 8 simultaneously, realizes that 1 inside liquid level of work well is stable, avoids ground to sink. The utility model discloses simple structure, reasonable in design both can keep the liquid level in the work well 1 to remain throughout setting for liquid level department, avoids ground to sink.

In the process, the heat exchanger 8 and the working well 1 form a circulation loop, and the power for operation adopts the prior art.

Example 1

On the basis of the structure, the temperature measuring device 4 and the controller 5 are further included in the embodiment, the temperature measuring device 4 is fixedly installed in the working well 1 in a manner that can be thought by those skilled in the art, and is in communication connection with the controller 5, and is used for detecting the water temperature in the working well 1 and sending a corresponding temperature signal to the controller 5. In the operation process, the temperature measuring part 4 monitors the water temperature inside the working well 1 in real time, and sends a corresponding temperature signal to the controller 5, so that a worker can know the water temperature inside the working well 1 in time.

Example 2

On the basis of the first embodiment, in the present embodiment, the temperature measuring element 4 is a temperature measuring optical fiber or a temperature sensor, and has a simple structure, high accuracy and convenient measurement.

The temperature measuring optical fiber or the temperature sensor is fixed on the inner wall of the working well 1 through a bolt, or is erected in the working well 1 through a support, and the support is fixed on the inner wall of the working well 1 through a bolt.

Example 3

On the basis of the first embodiment, the present embodiment further comprises a water level measuring part 6 for measuring the water level in the working well 1, wherein the water level measuring part 6 is fixedly installed in the working well 1 in a manner that will occur to those skilled in the art and is in communication connection with the controller 5. In the operation process, through the inside water level of 6 real-time supervision work wells of water level measurement spare to send the water level signal who corresponds for controller 5, so that the staff in time learns the inside water level condition of work well 1, when the inside water level of work well 1 is less than the settlement water level, the staff needs in time to handle.

Example 4

On the basis of the third embodiment, in the present embodiment, the water level measuring part 6 is a water level meter or a water level measuring optical fiber, and has a simple structure, high accuracy and convenient measurement.

The water level meter or the water level measuring optical fiber is fixed on the inner wall of the working well 1 through a bolt, or is erected in the working well 1 through a support, and the support is fixed on the inner wall of the working well 1 through a bolt.

Example 5

On the basis of the first embodiment or the third embodiment, the present embodiment further includes an alarm 7, and the alarm 7 is in communication connection with the controller 5. In the operation process, the temperature and/or water level signals are received through the controller 5 and are judged and analyzed; when the water level is lower than the set water level or the temperature is lower than the set temperature, the controller 5 controls the alarm 7 to give an alarm so that the worker can know and process the alarm in time.

The alarm 7 is not needed, the controller 5 is needed to send the corresponding result to the control center, the staff of the control center monitors in real time, and corresponding staff are informed in time when problems are found.

Example 6

On the basis of the structure, the embodiment further comprises a converter 9, wherein the converter 9 comprises an evaporator, and a water inlet and a water outlet of the evaporator are respectively communicated with a water return port and a water outlet of the heat exchange part through pipelines; a first circulating pump 10 is fixedly arranged on a pipeline between the water outlet of the heat exchange piece and the water inlet of the evaporator. In the operation process, the heat of geothermal water is obtained through the heat exchanger 8, geothermal resources are further utilized through the converter 9, the existing geothermal well resources are fully utilized for users to use, the investment waste of existing heat supply facilities is avoided, the safe and reliable heat supply is guaranteed, and the energy conservation and the environmental protection are realized.

The converter 9 is implemented by the prior art, such as an air conditioner, and the detailed structure thereof is not described herein.

In the above process, the heat exchanger 8 and the converter 9 form a circulation loop.

Example 8

On the basis of the seventh embodiment, the present embodiment further includes a user end 11, the heat exchanger 9 further includes a condenser for exchanging heat with the evaporator, and a water outlet and a water return port of the user end 11 are respectively communicated with a water inlet and a water outlet of the condenser through a pipeline; and a second circulating pump 12 is fixedly arranged on a pipeline between the water return port of the user end 11 and the water inlet of the condenser. Simple structure, reasonable in design, make full use of current geothermal well resource is in order to supply the user to use, avoids current heating facility investment waste, ensures safe and reliable heat supply, and is energy-concerving and environment-protective.

In the above process, the user terminal 11 and the converter 9 form a loop.

Example 9

On the basis of the eighth embodiment, in this embodiment, a standby pump 13 is further connected in parallel to one side of the first circulation pump 10 and/or the second circulation pump 12, a water inlet and a water outlet of each standby pump 13 are respectively communicated with a corresponding pipeline through a standby pipeline, and a valve 14 is fixedly installed on each standby pipeline. This scheme simple structure, reasonable in design sets up stand-by pump 13 so that entire system still can normal operating, safe and reliable when the circulating pump breaks down.

Each circulating pump is arranged between the communication part of the water inlet and the water outlet of the standby pump 13 and the corresponding pipeline through the standby pipeline.

Preferably, each valve 14 is a solenoid valve and is in communication connection with the controller 5; the electronic components may be connected to the controller 5 by wires or may be connected to the controller 5 by wireless communication.

In addition, the above electronic components all adopt the prior art, and the detailed structure and principle thereof are not described herein again.

And a pressure gauge is fixedly arranged on each spare pipeline respectively.

The working principle of the utility model is as follows:

when the device is operated, water in the heat exchanger 9 is sent into the working well 1 from the water replenishing pipe 2, and meanwhile, the water in the working well 1 is sent back into the heat exchanger 9 from the water return pipe 3 through the water pump 15, so that the circulation in the working well 1 and the heat exchanger 9 is realized, the stability of the liquid level in the working well 1 is ensured, and the ground subsidence is avoided;

meanwhile, the heat exchanger 9, the converter 10 and the user terminal 11 are utilized to fully utilize the existing geothermal well resources for users, so that the investment waste of the existing heat supply facilities is avoided, the safe and reliable heat supply is ensured, and the energy conservation and the environmental protection are realized.

In the traditional technology, geothermal water is directly pumped out for use during heating, so that the ground is easy to collapse. Aiming at the problem, the utility model designs an underground open type heat exchange system pertinently, which makes full use of the existing geothermal well resources and does not mine underground water through the heat exchange in the underground well body; meanwhile, the ground water enters the well body for heat exchange and then is supplied to the outside, and the ground water level in the underground well body is monitored, so that the purposes of not taking underground water and not lowering the underground water level are achieved, the heat supply requirement is met, and the ground settlement problem caused by water taking is avoided.

It should be noted that, the electronic components according to the present invention are all of the prior art, and the above components are electrically connected to a controller (model TC-SCR), and a control circuit between the controller and each component is of the prior art.

The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention, and any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention should be included within the protection scope of the present invention.

Claims

1. The utility model provides an open heat transfer system of middle and deep geothermal water which characterized in that: the heat exchanger (8) comprises a shell and a heat exchange piece fixedly installed in the shell, a water inlet of the shell is communicated with the bottom of the working well (1) through the water return pipe (3), and a water outlet of the shell is communicated with a well mouth of the working well (1) through the water replenishing pipe (2); and a water pump (15) is fixedly installed on the water return pipe (3).

2. The open heat exchange system for geothermal water in the middle depth according to claim 1, wherein: still include temperature measurement spare (4) and controller (5), temperature measurement spare (4) fixed mounting in working well (1), it with controller (5) communication connection is used for detecting the temperature in working well (1) to send corresponding temperature signal for controller (5).

3. The open heat exchange system for geothermal water in the middle depth according to claim 2, wherein: the temperature measuring piece (4) is a temperature measuring optical fiber or a temperature sensor.

4. The open heat exchange system for geothermal water in the middle depth according to claim 2, wherein: the water level measuring device is characterized by further comprising a water level measuring piece (6) used for measuring the water level in the working well (1), wherein the water level measuring piece (6) is fixedly installed in the working well (1) and is in communication connection with the controller (5).

5. The open heat exchange system for geothermal water in the middle depth according to claim 4, wherein: the water level measuring piece (6) is a water level meter or a water level measuring optical fiber.

6. The open heat exchange system for geothermal water in the middle depth according to claim 2 or 4, wherein: the alarm device is characterized by further comprising an alarm device (7), wherein the alarm device (7) is in communication connection with the controller (5).

7. The open heat exchange system for geothermal water in the middle depth according to any one of claims 1 to 5, wherein: the heat exchanger is characterized by further comprising a converter (9), wherein the converter (9) comprises an evaporator, and a water inlet and a water outlet of the evaporator are respectively communicated with a water return port and a water outlet of the heat exchange piece through pipelines; and a first circulating pump (10) is fixedly arranged on a pipeline between the water outlet of the heat exchange piece and the water inlet of the evaporator.

8. The open heat exchange system for geothermal water in the middle depth according to claim 7, wherein: the energy-saving device is characterized by also comprising a user end (11), the energy-saving; and a circulating pump II (12) is fixedly installed on a pipeline between the water return port of the user side (11) and the water inlet of the condenser.

9. The open heat exchange system for geothermal water in the middle depth according to claim 8, wherein: one side of the first circulating pump (10) and/or the second circulating pump (12) is also connected with a standby pump (13) in parallel, a water inlet and a water outlet of each standby pump (13) are respectively communicated with corresponding pipelines through standby pipelines, and each standby pipeline is fixedly provided with a valve (14).