CN220751408U

CN220751408U - Shallow geothermal energy geological environment monitoring device

Info

Publication number: CN220751408U
Application number: CN202322454770.0U
Authority: CN
Inventors: 王利勇; 刘红卫; 马俊; 鲁泽进
Original assignee: Hubei Diyuan Jieneng Engineering Co ltd
Current assignee: Hubei Diyuan Jieneng Engineering Co ltd
Priority date: 2023-09-08
Filing date: 2023-09-08
Publication date: 2024-04-09
Anticipated expiration: 2033-09-08

Abstract

The utility model relates to a ground temperature field monitoring devices field specifically discloses a shallow geothermal energy geology environment monitoring devices, and it includes the protection pipe, sets up in the inside monitoring cable of protection pipe and connects in the temperature sensor of monitoring cable one end, the protection pipe includes a plurality of fixed sleeve pipes of end-to-end concatenation, and is a plurality of the sleeve pipe is coaxial setting, temperature sensor sets up in sheathed tube inside. The application has the effect of increasing the application range of the monitoring device.

Description

Shallow geothermal energy geological environment monitoring device

Technical Field

The application relates to the field of geothermal field monitoring devices, in particular to a shallow geothermal energy geological environment monitoring device.

Background

The shallow geothermal energy is also called shallow geothermal energy, which refers to the thermal energy resources in the earth with development and utilization value under the current technical and economic conditions, wherein the temperature is lower than 25 ℃ within the range of 200 meters below the earth surface. Shallow geothermal energy is part of geothermal resources and is also a special mineral resource. Shallow geothermal energy is widely distributed, has large reserves, is quickly regenerated and has large utilization value, and is mainly collected and utilized by a ground source heat pump technology at present.

The ground temperature field is the manifestation of thermal energy inside the earth on the crust through rocks of different thermal conductivity. Below the surface, the ground temperature increases regularly with the depth of burial. The development and utilization of shallow geothermal energy easily causes the abnormality of local geothermal temperature fields in an underground heat exchange area, and heat loss or heat accumulation effect is generated. Therefore, the monitoring of good temperature fields in the process of shallow geothermal energy development and utilization is very necessary. Through the established ground temperature field monitoring system, the ground temperature field can be effectively dynamically monitored for a long time, the change trend of the ground temperature field of a heat exchange area can be mastered in time, data support is provided for the operation of a ground source heat pump system, and a basis is provided for reasonably optimizing the system operation scheme.

The utility model discloses a removable ground temperature field monitoring devices of chinese patent publication No. CN209783759U, its technical essential is: including PE pipe, standpipe first, standpipe second and temperature probe, standpipe first and standpipe set up respectively at PE pipe both ends, PE pipe one end butt fusion has connecting pipe fitting first, standpipe first card is established in connecting pipe fitting first, the butt fusion has connecting pipe fitting second on the PE pipe, standpipe second card is established in connecting pipe fitting second, temperature probe sets up in the PE pipe, connecting pipe fitting second bottom is provided with logical groove, temperature probe one end passes logical groove setting in PE pipe bottom, standpipe first and standpipe second in the card respectively have extension pipe first and extension pipe second, there is the top cap at extension pipe second top through screw thread engagement, be provided with the through-hole in the top cap, the through-hole inner card is equipped with the regulation pole.

For the related art, the use length of the device can be adjusted according to the needs by matching the first vertical pipe with the first extension pipe and the second vertical pipe with the second extension pipe, but the adjustment range is limited, and the utilization of the shallow geothermal energy can reach about 120 meters underground at present, so that the device is difficult to be applied.

Disclosure of Invention

In order to increase the application range of the monitoring device, the application provides a shallow geothermal energy geological environment monitoring device.

The application provides a shallow geothermal energy geological environment monitoring device adopts following technical scheme:

the utility model provides a shallow geothermal energy geology environment monitoring devices, includes the protection pipe, sets up in the inside monitoring cable of protection pipe and connects in the temperature sensor of monitoring cable one end, the protection pipe includes a plurality of end-to-end concatenation fixed sleeve pipes, a plurality of the sleeve pipe is coaxial setting, temperature sensor sets up in sheathed tube inside.

Through adopting above-mentioned technical scheme, owing to the protection pipe is formed by a plurality of sleeve pipes concatenation, consequently can select the sleeve pipe of corresponding quantity to splice according to the degree of depth that needs to detect, therefore the device can detect the scope bigger, and the suitability is stronger.

Optionally, be provided with a plurality of supporting shoes along length direction in the protection pipe, the supporting shoe includes link and interval setting in a plurality of butt pieces of link week side, butt piece and sheathed tube inner wall butt, be provided with the joint subassembly that is used for splicing two adjacent supporting shoes fixed on the link.

Through adopting above-mentioned technical scheme, the supporting shoe can support the protective tube, weakens the pressure of underground soil to the protective tube for the device can normally work.

Optionally, the joint subassembly is including setting up in the first joint ring and the second joint ring at link both ends, first joint ring and second joint ring all set up with the sleeve pipe is coaxial, the external diameter of first joint ring is the same with the internal diameter of second joint ring, be provided with the fixture block on the outer wall of first joint ring, set up the spacing groove that dodges the groove and restrict the fixture block and remove that supplies the fixture block to slide in on the inner wall of second joint ring, dodge the groove and be linked together with the spacing groove.

By adopting the technical scheme, the clamping block is aligned with the avoidance groove, then one supporting block is moved to enable the clamping block to slide into the avoidance groove, and then the supporting block is rotated to enable the clamping block to slide into the limit groove, so that the two adjacent supporting blocks are connected together, the integrity is enhanced, and the supporting effect is better; in addition, the plurality of support blocks can be taken out at a time when the support blocks are outwards taken out due to the arrangement of the clamping assembly, so that the support blocks can be conveniently and quickly taken out and the temperature sensor can be maintained.

Optionally, the length of the support block is greater than the length of the sleeve.

By adopting the technical scheme, the supporting blocks can be at least contacted with the two sleeves at the same time, and the gap between the two adjacent supporting blocks and the gap between the two adjacent sleeves are not at the same height, so that the supporting effect of the supporting blocks on the sleeves is enhanced.

Optionally, be close to be provided with the heat conduction piece in the sheathed tube of temperature sensor one end, the heat conduction piece is with sheathed tube inner wall butt, the heat conduction piece with temperature sensor's detection end butt.

Through adopting above-mentioned technical scheme, the heat conduction piece is made by metallic copper, therefore the heat conduction is effectual, helps the heat transfer in the soil to the sheathed tube inside to reinforcing testing result's accuracy.

Optionally, two adjacent sleeve pipes are in threaded connection, one end of each sleeve pipe is coaxially provided with a rubber ring, and two ends of each rubber ring are respectively abutted with the two sleeve pipes.

Through adopting above-mentioned technical scheme, the rubber ring sets up between two continuous sleeve pipes, and threaded connection department screws the back, and the rubber ring is in compression state to strengthened the leakproofness between two sleeve pipes, reduced the intraductal possibility of water entering sleeve in soil, thereby protected the intraductal temperature sensor of sleeve.

Optionally, an end cover is arranged at the end of the sleeve away from one end of the temperature sensor.

By adopting the technical scheme, rainwater can be prevented from entering through the sleeve, so that the possibility of corrosion of the temperature sensor caused by the rainwater is reduced.

Optionally, a lifting lug is arranged on the inner wall of the first clamping ring.

By adopting the technical scheme, the hoisting is more convenient, and the supporting block is convenient to take out from the sleeve.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the casing pipes are spliced into the required length according to the requirement, so that the temperature of the underground ground temperature field with the corresponding depth can be monitored, and the application range of the device is wider.

2. The supporting blocks can support the sleeve, reduce the influence of soil layer pressure on the sleeve, and facilitate the normal operation of the device; meanwhile, the supporting block is arranged in the sleeve in a sliding manner, so that the supporting block is convenient to take out, the temperature sensor or the monitoring cable is maintained or replaced, compared with the traditional process of filling cement mortar into the temperature measuring hole, the device can be reused, is convenient to maintain, does not discard the drilled temperature measuring hole due to the fact that the temperature sensor breaks down, and is beneficial to saving cost.

3. The clamping assembly is arranged to enable the supporting blocks to be connected into a section, so that the integrity is enhanced, and the supporting effect on the sleeve is enhanced.

Drawings

FIG. 1 is a schematic overall structure of an embodiment of the present application;

FIG. 2 is a cross-sectional view of an embodiment of the present application;

fig. 3 is a schematic diagram of a position relationship structure of a supporting block and a clamping assembly according to an embodiment of the present application;

FIG. 4 is a schematic view of the structure of a support block in an embodiment of the present application;

FIG. 5 is a schematic structural view of a second clamping ring according to an embodiment of the present disclosure;

fig. 6 is a schematic structural diagram of a first clamping ring in an embodiment of the present application.

Reference numerals: 1. a protective tube; 11. a sleeve; 2. monitoring cables; 3. a temperature sensor; 4. a support block; 41. a connecting frame; 42. an abutment block; 421. a cambered surface; 5. a clamping assembly; 51. a first clamping ring; 511. a clamping block; 52. a second clamping ring; 521. an avoidance groove; 522. a limit groove; 6. a heat conduction block; 7. a rubber ring; 8. an end cap; 9. lifting lugs.

Detailed Description

The present application is described in further detail below with reference to the accompanying drawings.

The embodiment of the application discloses a shallow geothermal energy geological environment monitoring device. Referring to fig. 1 and 2, the shallow geothermal energy geological environment monitoring device includes a protective tube 1, a temperature sensor 3 and a monitoring cable 2. The protection pipe 1 is buried underground, and the protection pipe 1 is vertical setting, and the protection pipe 1 includes a plurality of sleeve pipes 11 that set up coaxially, and a plurality of sleeve pipes 11 end to end in proper order, therefore can select the sleeve pipe 11 of corresponding quantity to splice according to the degree of depth of required monitoring. The temperature sensor 3 is arranged on the inner side of the sleeve 11 far from one end of the ground surface, and the temperature sensor 3 is adhered and fixed with the inner wall of the sleeve 11, so that the temperature sensor 3 can detect the temperature of the ground. The monitoring cable 2 sets up in the inside of protection tube 1, and the length of monitoring cable 2 is greater than the whole length of protection tube 1, and the bottom and the temperature sensor 3 of monitoring cable 2 link to each other, and the top and the control system of monitoring cable 2 link to each other, therefore the temperature transmission of the underground that monitoring cable 2 can detect temperature sensor 3 gives control system to the change of the temperature of the corresponding degree of depth of underground is recorded, monitors the ground temperature field.

Referring to fig. 2, the top of each sleeve 11 is provided with external threads and the bottom is provided with internal threads, so that two adjacent sleeves 11 are fixed by threaded connection, thereby ensuring the connection stability between the sleeves 11. The bottom of each sleeve 11 is adhered with a rubber ring 7, the rubber rings 7 and the sleeves 11 are coaxially arranged, after the two sleeves 11 are in threaded connection, two ends of each rubber ring 7 are respectively abutted against the ends of the two sleeves 11, so that the arrangement of the rubber rings 7 can enhance the tightness of connection between the sleeves 11, the possibility that moisture in soil enters the sleeve 11 is reduced, and corrosion to the monitoring cable 2 and the temperature sensor 3 is weakened. The bottom of the bottom sleeve 11 is closed, the top end of the top sleeve 11 is buckled with an end cover 8, and a perforation for the monitoring cable 2 to penetrate out is formed in the end cover 8, so that the temperature sensor 3 is in a closed environment, the temperature sensor 3 is further protected, and the service life is prolonged.

In order to enhance the thermal conductivity of the sleeve 11, the sleeve 11 is made of cast iron, and thus has a high thermal conductivity. The heat conducting block 6 is fixedly connected to the inner wall of the bottommost sleeve 11, the surface of the heat conducting block 6 is abutted to the detection end of the temperature sensor 3, the heat conducting block 6 is made of metal copper, and the heat conductivity coefficient of copper is higher, so that heat of the corresponding depth underground can be transferred to the inside of the sleeve 11 better, and the accuracy of a detection result is enhanced.

After the underground drills out the temperature measurement hole, place protection pipe 1 in the inside of temperature measurement hole, the soil of temperature measurement hole week side can lead to the fact the extrusion to protection pipe 1, in order to guarantee that protection pipe 1 can normally work, refer to fig. 3 and 4, and the inside of protection pipe 1 is provided with supporting shoe 4. The support blocks 4 are arranged in a plurality along the vertical direction, and the support blocks 4 are connected end to end in sequence. The supporting block 4 comprises a connecting frame 41 and an abutting block 42, the cross section of the connecting frame 41 is in a groined shape, the length direction of the connecting frame 41 is vertically arranged, and the monitoring cable 2 can pass through while the supporting effect on the protection pipe 1 is ensured; the butt piece 42 is provided with four, equal fixed connection in the outside of link 41, and four butt pieces 42 are circumference array arrangement, and butt piece 42 is the arc piece, and one side that butt piece 42 kept away from link 41 sets up to cambered surface 421, and the arc radius of cambered surface 421 is the same with the radius of sleeve pipe 11, and the cambered surface 421 of butt piece 42 and the inner wall butt of sleeve pipe 11. Therefore, the connecting frame 41 and the abutting block 42 can support the sleeve 11, and damage to the sleeve 11 caused by the pressure of soil is reduced, so that the normal use of the device is ensured. The length of the supporting blocks 4 is longer than that of the sleeves 11, so that the number of the supporting blocks 4 can be reduced, and one supporting block 4 can be simultaneously abutted with at least two sleeves 11, thereby enhancing the supporting effect on the sleeves 11.

Referring to fig. 3, 5 and 6, a clamping assembly 5 for fixedly connecting two adjacent support blocks 4 together is provided on the connection frame 41, and the clamping assembly 5 includes a first clamping ring 51 and a second clamping ring 52. The axes of the first clamping ring 51 and the second clamping ring 52 are arranged along the length direction of the connecting frame 41, the first clamping ring 51 is welded at the bottom end of the connecting frame 41, and the second clamping ring 52 is welded at the top end of the connecting frame 41. The outer diameter of the first clamping ring 51 is smaller than the inner diameter of the sleeve 11, four clamping blocks 511 are integrally formed on the outer wall of the first clamping ring 51, and the four clamping blocks 511 are distributed in a circumferential array; the outer diameter of the second clamping ring 52 is the same as the inner diameter of the sleeve 11, and the inner diameter of the second clamping ring 52 is the same as the outer diameter of the first clamping ring 51, so that the wall surfaces of the first clamping ring 51 and the second clamping ring 52 are in mutual abutting connection, and the clamping effect can be ensured; the inner wall of the second clamping ring 52 is provided with an avoidance groove 521 and a limit groove 522, the avoidance groove 521 is arranged along the vertical direction, the width of the avoidance groove 521 is the same as the width of the clamping block 511, and the avoidance groove 521 can enable the clamping block 511 to slide in; the limiting groove 522 is formed along the circumferential direction of the second clamping ring 52, one end of the limiting groove 522 is communicated with the bottom of the avoiding groove 521, and the height of the limiting groove 522 is the same as that of the clamping block 511, so that the clamping block 511 can slide along the limiting groove 522; the avoiding groove 521 and the limiting groove 522 form an L-shaped groove, and four L-shaped grooves are circumferentially arrayed and correspond to the four clamping blocks 511.

When the two support blocks 4 are connected, the two support blocks 4 are arranged up and down, the clamping blocks 511 are aligned with the avoidance grooves 521, then the upper support blocks 4 are moved downwards, the clamping blocks 511 can slide into the avoidance grooves 521, after the clamping blocks 511 slide to the bottoms of the avoidance grooves 521, the upper support blocks 4 rotate around the vertical axis, the clamping blocks 511 move into the limit grooves 522, and therefore the two adjacent support blocks 4 are connected together, and the two support blocks 4 are limited to move relatively along the vertical direction. In order to facilitate maintenance or replacement of the temperature sensor 3, the supporting blocks 4 can be connected into one section through the clamping assembly 5, and the supporting blocks 4 in the whole protection pipe 1 are provided with multiple sections, so that the supporting blocks 4 can be taken out one by one when being taken out outwards, the taking-out efficiency of the supporting blocks 4 is improved, and the operation is more convenient. Lifting lugs 9 are fixedly connected to two opposite sides of the inner wall of the first clamping ring 51, so that the supporting block 4 is convenient to lift.

The implementation principle of the shallow geothermal energy geological environment monitoring device in the embodiment of the application is as follows: selecting a corresponding number of sleeves 11 according to the depth to be measured, fixing the sleeves 11 through threaded connection, and adhering the temperature sensor 3 inside the sleeve 11 at the bottom end so that the detection end of the temperature sensor 3 is abutted with the heat conducting block 6; then the sleeve 11 after connection is put into a temperature measuring hole in the ground, a plurality of supporting blocks 4 are spliced into a section through the clamping assembly 5, the supporting blocks 4 are put into the sleeve 11, the opening of the sleeve 11 at the top end is sealed through the end cover 8, the monitoring cable 2 connected to the temperature sensor 3 is led out from the end cover 8, and the monitoring cable 2 is connected into a control system, so that the installation of a monitoring device is completed, and the temperature of a ground temperature field is monitored. If the temperature sensor 3 fails, the end cover 8 can be opened, the multi-section supporting block 4 is lifted out through the lifting lug 9, and then the temperature sensor 3 is taken out for maintenance or replacement, so that the maintenance process is simple and convenient.

The foregoing is an alternative embodiment of the present application, and is not intended to limit the scope of the present application in this way, therefore: all equivalent changes in structure, shape and principle of this application should be covered in the protection scope of this application.

Claims

1. A shallow geothermal energy geological environment monitoring device is characterized in that: including protection tube (1), set up in the inside monitoring cable (2) of protection tube (1) and connect in temperature sensor (3) of monitoring cable (2) one end, protection tube (1) are including a plurality of fixed sleeve pipes (11) of head and tail concatenation, a plurality of sleeve pipes (11) are coaxial setting, temperature sensor (3) set up in the inside of sleeve pipe (11).

2. A shallow geothermal energy geological environment monitoring device according to claim 1, wherein: the protection pipe (1) is internally provided with a plurality of supporting blocks (4) along the length direction, each supporting block (4) comprises a connecting frame (41) and a plurality of abutting blocks (42) arranged on the periphery side of the connecting frame (41) at intervals, each abutting block (42) is abutted to the inner wall of the corresponding sleeve (11), and each connecting frame (41) is provided with a clamping assembly (5) for splicing and fixing two adjacent supporting blocks (4).

3. A shallow geothermal energy geological environment monitoring device according to claim 2, wherein: the clamping assembly (5) comprises a first clamping ring (51) and a second clamping ring (52) which are arranged at two ends of the connecting frame (41), the first clamping ring (51) and the second clamping ring (52) are coaxially arranged with the sleeve (11), the outer diameter of the first clamping ring (51) is identical to the inner diameter of the second clamping ring (52), a clamping block (511) is arranged on the outer wall of the first clamping ring (51), and a avoiding groove (521) for the clamping block (511) to slide in and a limiting groove (522) for limiting the movement of the clamping block (511) are formed in the inner wall of the second clamping ring (52), and the avoiding groove (521) and the limiting groove (522) are communicated.

4. A shallow geothermal energy geological environment monitoring device according to claim 2, wherein: the length of the supporting block (4) is longer than that of the sleeve (11).

5. A shallow geothermal energy geological environment monitoring device according to claim 1, wherein: be provided with heat conduction piece (6) in sleeve pipe (11) near temperature sensor (3) one end, heat conduction piece (6) and the inner wall butt of sleeve pipe (11), heat conduction piece (6) and the detection end butt of temperature sensor (3).

6. A shallow geothermal energy geological environment monitoring device according to claim 1, wherein: two adjacent sleeve pipes (11) are in threaded connection, one end of each sleeve pipe (11) is coaxially provided with a rubber ring (7), and two ends of each rubber ring (7) are respectively abutted to the two sleeve pipes (11).

7. A shallow geothermal energy geological environment monitoring device according to claim 1, wherein: an end cover (8) is arranged at the end part of the sleeve (11) far away from one end of the temperature sensor (3).

8. A shallow geothermal energy geological environment monitoring device according to claim 3, wherein: lifting lugs (9) are arranged on the inner wall of the first clamping ring (51).