CN111980699B - A multi-data integrated volatile gas acquisition underground drilling component - Google Patents

Abstract

A multi-data integrated volatile gas collection underground drilling component, comprising a drilling component main body, one end of the drilling component main body is connected with a guide head, and the other end is connected with a drilling device power source; the drilling component main body is connected with a heating gas gathering detector Temperature module and negative pressure air passage; the guide head and the main body of the drilling part are manufactured by 3D printing; along the main body of the drilling part, there is a heating gas collection temperature measurement module, and the heating gas collection temperature measurement module is provided with a heating tile and a ceramic transparent cover The guide head is a triple structure of round head cone-cylinder-hollow stud, and the outer edge of the round head cone is provided with a pressure relief diversion groove; the main body of the drilling part is provided with acceleration, current and annular pressure sensors; the invention realizes The integration of equipment and multi-data integration collection can sense underground multi-dimensional information, with circumferential heating in annular area, long service period of semi-permeable membrane, uniform sampling in circumferential direction, ability to sense feeding resistance, anti-vibration, high gas production efficiency, High detection sensitivity.

Description

A multi-data integrated volatile gas acquisition underground drilling component

technical field

The invention relates to the technical field of underground drilling, in particular to a multi-data integrated volatile gas acquisition underground drilling component.

Background technique

The structure of the existing underground drilling volatile gas drilling component is a straight cylinder with a cone head, which absorbs volatile gas by heating the soil during operation, and has the advantages of large heating area, high power consumption, short life of semi-permeable membrane, uneven sampling, and no underground force. Disadvantages such as poor impact resistance of sensing components and internal components, low suction power and low detection sensitivity.

SUMMARY OF THE INVENTION

In order to overcome the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide a multi-data integrated volatile gas acquisition underground drilling component, which has the advantages of regional progressive heating, long service period of semi-permeable membrane, uniform sampling in the circumferential direction, and capable of sensing feed. It has the advantages of resistance, anti-vibration, high gas extraction efficiency and high detection sensitivity.

In order to achieve the above object, the present invention adopts the following technical solutions:

A multi-data integrated volatile gas acquisition underground drilling component, comprising a drilling component main body 2, one end of the drilling component main body 2 is connected with a guide head 1, and the other end is connected with a power source of a drilling device; the main body 2 of the drilling component is connected with There are heating gas collection temperature measurement modules and negative pressure air passages; a plurality of heating gas collection temperature measurement modules are evenly distributed along the outer circumference of the main body 2 of the drilling component, and the heating gas collection temperature measurement modules are provided with heating tiles 3 and ceramic transparent covers 4;

The guide head 1 is a triple structure of a round head cone-cylinder-hollow stud, and the outer edge of the round head cone is provided with a plurality of evenly distributed guide grooves. The guide head 1 passes through the uppermost hollow stud and the main body 2 of the drilling part. Internal thread connection of lower port;

The outer shape of the main body 2 of the drilling part is a cylinder-circular truncated-cylindrical structure. The lower end surface of the main body 2 of the drilling part is provided with a plurality of acceleration sensors 13 evenly distributed along the circumference to monitor the underground movement of the drilling part. Feed displacement; on the outer edge of the main body 2 of the drilling part, a plurality of current sensors 12 distributed evenly around the circumference are arranged below the heating gas collecting temperature measurement module to monitor the conductivity of the soil at the sampling point, and then determine the location of the drilling part. An annular pressure sensor 14 is arranged between the main body 2 of the drilling component and the guide head 1 to monitor the real-time resistance of the drilling component.

The heating gas collection temperature measurement module includes a heating tile 3, the heating tile 3 is in the shape of a round head saddle, the heating tile 3 is provided with a mounting recess for positioning bolts 8, and a thermal resistance band 6 is installed in the heating tile 3. A plurality of thermocouples 9 are evenly distributed between the grooves of the thermal resistance band on the 3; the outer side of the heating tile 3 is enveloped and connected to the first thermal insulation layer 7-1, and the inner hole wall is wedge-shaped nested with the second thermal insulation layer 7-2 , the inner wall of the heating tile 3 is attached to the third thermal insulation layer 7-3; the inner hole wall of the thermal insulation layer 7-2 is wedge-shaped nested with the ceramic transparent cover 4; the ceramic transparent cover 4 cooperates with the semi-permeable membrane 5 to form VOC gas road.

Through the inclined through-hole array with an inclination of 150 degrees and a diameter of 0.4mm set on the ceramic transparent cover 4, the soil particles are squeezed upward along the outer wall of the ceramic transparent cover 4 during the downward flushing process of the drilling component, and the gas and trace The liquid and solid particles enter the ceramic transparent cover 4 through the inclined through holes, and only the gas can pass through the semi-permeable membrane 5 and enter the air passage.

The thermal resistance strip 6 is a metal strip with a curved surface and a zigzag structure, which generates heat after power is supplied, and transfers the heat to the heating tile 3 through thermal conduction.

The main body 2 of the drilling component is provided with a grid 2e, and the grid 2e is a radial grid structure; the cross-sectional shape of the transverse air channel 2c in the main body 2 of the drilling component is composed of two parts, the upper part is a large-diameter radius. Ellipse, the lower part is a semicircle; the transverse air passage 2c is a 150-degree superior arc ring passage that does not pass through the front and the end, and it is connected to the inlet passage 2a and the outlet passage 2b with rounded transitions in the head and tail upwards, respectively. The passage 2b moves the position of the air passage inward and expands the diameter of the air passage by setting out, and the transverse air passage 2c is communicated with the air passage interface 2d; The outlet of channel 2b is provided with a second negative pressure device 10-2, the first negative pressure device 10-1 is connected with the first electromagnetic flow check valve 11-1, and the second negative pressure device 10-2 is connected with the second electromagnetic flow check valve 11 -2 connections.

The negative pressure device is composed of an electromagnet 10a and a reed 10b integrated on the airway by 3D printing technology; during operation, the electromagnet 10a is energized to attract the reed 10b to expand outward to form a negative pressure cavity.

The beneficial effects of the present invention are:

(1) A plurality of guide grooves are arranged at the guide head 1, which improves the stability and reliability of the equipment operation.

(2) Integrate the thermocouple 9, the current sensor 12, the acceleration sensor 13, and the pressure sensor 14 with the main body 2 of the drilling component, so as to realize the integration of equipment and multi-data integration, and to sense the multi-dimensional subsurface of the drilling component. Information (resistance, displacement, soil moisture content).

(3) The gas flow channel is arranged inside the drilling component, which not only ensures the airtightness of the gas flow channel, but also realizes the integration of equipment, and avoids the airtightness failure of the air channel caused by the impact.

(4) Through the cooperation of the electromagnetic stop valve and the negative pressure device, the collection efficiency of VOC gas can be improved, and the detection sensitivity of the equipment can be enhanced.

(5) The semipermeable membrane 5 is embedded in the ceramic transparent cover 4 , which reduces the influence of the non-collecting components in the soil on the semipermeable membrane 5 and prolongs the service life of the semipermeable membrane 5 .

(6) The ceramic transparent cover 4 is arranged on the upper end of the heating tile 3. When the thermal resistance band 6 is energized, the heating tile 3 heats the soil, and the drill pipe goes down. When the ceramic transparent cover 4 reaches the sampling point, the soil at the sampling point has been heated. To the specified temperature, continuous gas collection is guaranteed.

(7) A round wire hole is provided at the bottom of the grid 2e inside the main body 2 of the drilling component, and the cable of the electrical component is restrained in the grid hole through the round hole to avoid the cable falling off due to impact, fracture.

Description of drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic diagram of the guide head of the present invention.

FIG. 3 is a schematic diagram of the heating gas collecting temperature measuring module of the present invention.

FIG. 4 is a schematic diagram of the ceramic transparent cover and the semi-permeable membrane of the present invention.

FIG. 5 is a schematic diagram of the thermal resistance band of the present invention.

FIG. 6 is a schematic diagram of the thermal insulation layer of the present invention.

FIG. 7 is a schematic view of the installation of the acceleration sensor 13 and the pressure sensor 14 on the lower end surface of the main body 2 of the drilling component of the present invention.

FIG. 8 is a schematic diagram of the internal air passage of the main body 2 of the drilling component of the present invention.

FIG. 9 is a schematic diagram of the gas circuit control module of the present invention.

FIG. 10 is a schematic diagram of the negative pressure device of the present invention.

FIG. 11 is a schematic diagram of the interior of the main body 2 of the drilling component of the present invention.

Figure 12 is a flow chart of the negative pressure gas gathering of the present invention.

Detailed ways

The present invention will be described in detail below with reference to the accompanying drawings and embodiments.

Referring to FIG. 1, a multi-data integrated volatile gas acquisition underground drilling component includes a drilling component main body 2, one end of the drilling component main body 2 is connected with the guide head 1 through threads, and the other end is provided with an internal thread with a depth of 10mm , connected with the power source of the drilling device through the internal thread; the main body 2 of the drilling component is connected with a heating gas collection temperature measurement module and a negative pressure air channel; the heating gas collection temperature measurement module is connected with the drilling component main body 2 through the positioning bolt 8; The head 1 and the main body 2 of the drilling part are manufactured by 3D printing; three heating gas collection and temperature measurement modules are evenly distributed along the outer circumference of the main body 2 of the drilling part, and a heating tile 3 and a ceramic transparent cover 4 are arranged on the heating gas collection and temperature measurement modules.

Referring to FIG. 2 , the guide head 1 is a triple structure of a round head cone-cylinder-hollow stud, and the outer edge of the round head cone is provided with three evenly distributed guide grooves, and the guide head 1 passes through the uppermost hollow stud and the drilling The internal thread connection of the lower port of the main body 2 of the component; the installation space for the pressure sensor 14 is arranged on the hollow stud, and the installation space for the acceleration sensor 13 and its circuit holes are arranged on the cylindrical section, and the circuit holes are collected into the hollow stud.

Referring to FIG. 3 , the heating gas collection temperature measurement module includes a heating tile 3, the heating tile 3 is in the shape of a round head saddle, and a thermal resistance band 6 is installed in the heating tile 3, and between the thermal resistance band grooves on the heating tile 3 Three thermocouples 9 are evenly distributed on both sides, and the heating tile 3 is provided with a mounting recess for fixing the positioning bolts 8 of the thermocouples 9; It is wedge-shaped nesting with the second insulating layer 7-2, the inner wall of the second insulating layer 7-2 is wedge-shaped nesting with the ceramic transparent cover 4, and the inner wall of the heating tile 3 is attached to the third insulating layer 7-3.

Referring to FIG. 4 , the ceramic transparent cover 4 cooperates with the semi-permeable membrane 5 to form a VOC air channel. Through the inclined through-hole array with an inclination of 150 degrees and a diameter of 0.4 mm set on the ceramic transparent cover 4, drill During the process of the lower flushing of the component, the soil particles are pressed upward along the outer wall of the ceramic transparent cover 4, and the gas, trace liquid and solid particles enter the ceramic transparent cover 4 through the inclined through holes, and only the gas can pass through the semi-permeable membrane 5 and enter the airway.

Referring to FIG. 5 , the thermal resistance band 6 is a metal band with a curved shape and a zigzag structure, which generates heat after power is supplied, and transfers the heat to the heating tile 3 through thermal conduction, and the heating tile 3 heats the soil to a specific temperature.

Referring to FIG. 6 , the first thermal insulation layer 7-1 is arranged between the installation space around the heating gas collecting temperature measurement module of the drilling component main body 2 and the surrounding surface of the heating tile 3, and the second thermal insulation layer 7-2 is arranged on the Between the ceramic transparent cover 4 and the heating tile 3, the third thermal insulation layer 7-3 is arranged between the inner surface of the installation space of the heating gas collecting temperature measuring module of the drilling component main body 2 and the inner wall of the heating tile 3, and the first thermal insulation layer 7 -1. The combination of the second heat insulation layer 7-2 and the third heat insulation layer 7-3 covers the surface of the heating ring 3 in contact with the main body 2 of the drilling component and the ceramic transparent cover 4, which effectively avoids heat in non-heating regional spread.

Referring to FIG. 7 , the lower end surface of the main body 2 of the drilling part is provided with four acceleration sensors 13 evenly distributed along the circumference to monitor the feed displacement of the drilling part underground; on the outer edge of the main body 2 of the drilling part Three current sensors 12 evenly distributed around the circumference are arranged below the heating gas collection temperature measurement module to monitor the conductivity of the soil at the sampling point, and then determine the water content of the location where the drilling component is located; the drilling component main body 2 An annular pressure sensor 14 is arranged between the drilling rig and the guide head 1 to monitor the real-time resistance of the drilling components.

Referring to FIG. 8 , the main body 2 of the drilling component is provided with a grid 2e, and the grid 2e is a radial grid structure to reduce the weight of the equipment and strengthen the strength of the drilling component, and the grid channel is used to constrain the Cable arrangement of electrical components; the cross-sectional shape of the transverse air channel 2c in the main body 2 of the drilling component is composed of two parts, the upper half is a semi-ellipse with a large diameter, and the lower half is a semicircle; the transverse air channel 2c is the head and tail The non-penetrating 150-degree superior arc ring channel is connected to the inlet port 2a and the air outlet 2b with a rounded transition from the beginning to the end. The diameter of the airway, the transverse airway 2c communicates with the airway interface 2d.

9 and 10, a first negative pressure device 10-1 is arranged at the inlet of the air inlet 2a, a second negative pressure device 10-2 is arranged at the outlet of the air outlet 2b, the first negative pressure device 10-1 and the first negative pressure device 10-1 are arranged at the outlet of the air outlet 2b. An electromagnetic stop valve 11-1 is connected, and the second negative pressure device 10-2 is connected to the second electromagnetic stop valve 11-2; when the first electromagnetic stop valve 11-1 and the second electromagnetic stop valve 11-2 are connected When starting, the air inlet and outlet are closed, and the air passage is connected to the grid round table, the semi-permeable membrane 5, and the ceramic transparent cover 4 through the air passage interface 2d and is connected to the outside world. At this time, the electromagnet 10a is activated, and the reed 10b expands outward to form a negative electrode. Pressure chamber, the negative pressure sucks the gas outside the ceramic transparent cover 4 into the air passage, closes the electromagnetic check valve, closes the electromagnet 10a, and the nitrogen flow entering from the air inlet sends the gas inhaled into the air passage from the air outlet into the detection device. .

10, the negative pressure device is composed of an electromagnet 10a and a reed 10b integrated on the airway by 3D printing technology; the electromagnet 10a is energized during operation, attracting the reed 10b to expand outward to form a negative pressure cavity.

Referring to FIG. 11 , the upper end surface B of the grid 2e of the main body 2 of the drilling component is the installation plane of the electromagnet 10a of the negative pressure device, and the upper end surface A is the first electromagnetic stop valve 11-1 and the second electromagnetic stop valve. The installation plane of 11-2; the outer edge of the main body 2 of the drilling part is provided with three installation spaces for the heating and gas-collecting temperature-measuring modules that are evenly distributed around the circumference. A 4mm groove is used for wiring the thermocouple 9, and a round hole with a diameter of 3mm is arranged at the bottom of the groove, through which the cable bundle of the thermocouple 9 enters the hole of the grid 2e; The center of the upper semicircle of the temperature module installation space is provided with a cylindrical grid structure with a diameter of 8 mm, which penetrates the semi-permeable membrane 5 outward and penetrates the airway interface 2d inward to form a strict ventilation path.

Referring to FIG. 12 , first, the gas path is fully opened, that is, the first electromagnetic check valve 11-1 and the second electromagnetic flow check valve 11-2 are closed, nitrogen flow is input into the air passage through the inlet port, and the thermal resistance band 6 is energized , the soil outside is heated by the heating tile 3, and when the soil is heated to a specific temperature, the first electromagnetic check valve 11-1 at the air inlet and the second electromagnetic check valve 11-2 at the air outlet are successively activated to cut off the air passage and start the The negative pressure device forms negative pressure. After 2-3 seconds, the second electromagnetic check valve 11-2 of the air outlet, the first electromagnetic check valve 11-1 of the negative pressure device and the air inlet are closed successively for 2-3 seconds; After 3 cycles in this way, the power supply to the thermal resistance band 6 is stopped to complete the gas collection at a certain depth.

The working principle of the present invention is:

Multi-data integration of volatile gas collection The drilling components of the underground drilling device are installed at the front end of the hydraulic impact fast-forward device. During operation, the guide head 1 moves back and forth rapidly and collects real-time pressure, real-time displacement and soil moisture content. Based on these data, the drilling is judged. The specific conditions of the soil layer where the components are located and make timely adjustments. When the conditions are suitable, the heating gas collecting temperature measuring module starts to work, and the thermal resistance band 6 heats the soil at the sampling point through the heat conduction of the heating tile 3; Particles and gas enter the hole of the ceramic transparent cover 4, the gas enters the air channel through the semi-permeable membrane 5, and the liquid and soil particles are discharged from the hole of the ceramic transparent cover 4 due to the action of gravity; A thermal insulation layer 7-1, a second thermal insulation layer 7-2, and a third thermal insulation layer 7-3 are covered and nested and connected, and the temperature of the thermal resistance band 6 is mainly used to heat the soil at the sampling point; the gas passes through the semi-permeable membrane 5. After passing through the cylindrical grid and the air channel interface 2d, it enters the horizontal air channel 2c; before starting to heat the soil, the electromagnetic check valve 11 is closed, and the flow channel is unobstructed. After heating to a specific temperature, the first electromagnetic flow stop valve 11-1 and the second electromagnetic flow check valve 11-2 are activated respectively. At this time, the electromagnet 10a is energized, and the attracting reed 10b expands outward to form a negative pressure, which pushes the soil into the soil. The volatilized gas is sucked into the air passage; the second electromagnetic stop valve 11-2 and the first electromagnetic stop valve 11-1 on the air outlet 2b and the air inlet 2a are respectively closed, the electromagnet 10a is powered off, and the reed 10b returns The nitrogen flow entering from the air inlet sends the gas inhaled into the airway into the detection device from the air outlet, then closes the electromagnetic check valve, and starts the negative pressure device. This reciprocation three times is a sampling cycle; one sampling cycle is completed It is the detection of a sampling point. If the sampling points are evenly set according to the range and depth of the land plane, the three-dimensional data distribution of the soil layer of a certain land can be detected.

The above is only a preferred embodiment of the present invention, but the protection scope of the present invention is not limited to this, any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, All should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.

Claims (5)

1. A multi-data integrated volatile gas acquisition underground drilling component, comprising a drilling component main body (2), characterized in that: one end of the drilling component main body (2) is connected to a guide head (1), and the other end is connected to a drilling component The power source of the device is connected; the main body (2) of the drilling part is connected with a heating gas collecting temperature measurement module and a negative pressure air passage; the guide head (1) and the main body (2) of the drilling part are manufactured by 3D printing; (2) A plurality of heating gas collection temperature measurement modules are evenly distributed on the outer circumference, and a heating tile (3) and a ceramic transparent cover (4) are arranged on the heating gas collection temperature measurement module; The guide head (1) has a triple structure of round-headed cone-cylinder-hollow stud, the outer edge of the round-headed cone is provided with a plurality of evenly distributed guide grooves, and the guide head (1) passes through the uppermost hollow stud and the drill. The internal thread connection of the lower port of the main body (2) of the inlet part; The outer shape of the main body (2) of the drilling component is a cylinder-circular truncated-cylindrical structure, and a plurality of acceleration sensors (13) uniformly distributed along the circumference are arranged on the lower end surface of the main body (2) of the drilling component for monitoring The feed displacement of the drilling component in the ground; a plurality of current sensors (12) distributed evenly around the circumference are arranged below the heating gas collecting temperature measuring module on the outer edge of the main body (2) of the drilling component to monitor the soil quality of the sampling point. Conductivity, and then determine the water content of the position where the drilling component is located; an annular pressure sensor (14) is arranged between the outer edge of the center grid inside the main body (2) of the drilling component and the inner surface of the hollow stud of the guide head, To monitor the real-time resistance of drilling components; The main body (2) of the drilling component is provided with a grid (2e), and the grid (2e) is a radial grid structure; the cross-sectional shape of the transverse air channel (2c) in the main body (2) of the drilling component is composed of two The upper part is a semi-ellipse with a large diameter and the lower part is a semi-circle; the transverse airway (2c) is a 150-degree superior arc ring that does not pass through the front and rear, and is connected to the air inlet (2a) and the air outlet at the front and rear respectively. The passage (2b) is connected with rounded corners. The air inlet passage (2a) and the air outlet passage (2b) move the position of the air passage inward and expand the diameter of the air passage by setting out. The transverse air passage (2c) and the air passage interface ( 2d) are connected; a first negative pressure device (10-1) is arranged at the inlet of the air inlet (2a), and a second negative pressure device (10-2) is arranged at the outlet of the air outlet (2b). The device (10-1) is connected with the first electromagnetic flow check valve (11-1), and the second negative pressure device (10-2) is connected with the second electromagnetic flow check valve (11-2). 2. A multi-data integrated volatile gas acquisition underground drilling component according to claim 1, characterized in that: the heating gas gathering temperature measurement module comprises a heating tile (3), and the heating tile (3) is a circle The head is in the shape of a saddle, a thermal resistance band (6) is installed in the heating tile (3), and a plurality of thermocouples (9) are evenly distributed around the circumference between the grooves of the thermal resistance band on the heating tile (3); the outer side of the heating tile (3) Nested connection with the first heat insulation layer (7-1), the inner hole wall is wedge-shaped nested with the second heat insulation layer (7-2), and the inner hole wall of the second heat insulation layer (7-2) is connected with the ceramic transparent cover (4) Wedge-shaped nesting; the inner wall of the heating tile (3) is attached and connected with the third heat insulation layer (7-3); the ceramic transparent cover (4) cooperates with the semi-permeable membrane (5) to form a VOC air channel. 3. A multi-data integrated volatile gas acquisition underground drilling component according to claim 2, characterized in that: an oblique passage with an inclination of 150 degrees and a diameter of 0.4 mm provided on the ceramic transparent cover (4) Hole array, soil particles are pressed upward along the outer wall of the ceramic transparent cover (4) during the downward flushing process of the drilling component, and gas, trace liquid and solid particles enter the ceramic transparent cover (4) through the inclined through holes, and only gas can Enter the airway through the semi-permeable membrane (5). 4. A multi-data integrated volatile gas acquisition underground drilling component according to claim 2, characterized in that: the thermal resistance band (6) is a metal band with a curved back-shaped structure, which generates heat after power is supplied, and conducts heat through heat conduction. The heat is transferred to the heating tile (3). 5. A multi-data integrated volatile gas acquisition underground drilling component according to claim 1, characterized in that: the negative pressure device is composed of an electromagnet (10a) and a spring integrated on the airway by 3D printing technology The electromagnet (10a) is energized during operation, and the attracting reed (10b) expands outward to form a negative pressure cavity.

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