CN220169698U - Geothermal energy extraction element based on support stake - Google Patents
Geothermal energy extraction element based on support stake Download PDFInfo
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- CN220169698U CN220169698U CN202320828420.3U CN202320828420U CN220169698U CN 220169698 U CN220169698 U CN 220169698U CN 202320828420 U CN202320828420 U CN 202320828420U CN 220169698 U CN220169698 U CN 220169698U
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- 238000000605 extraction Methods 0.000 title claims abstract description 15
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 120
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 62
- 239000010959 steel Substances 0.000 claims abstract description 62
- 230000002787 reinforcement Effects 0.000 claims description 34
- 239000002689 soil Substances 0.000 claims description 14
- 239000007788 liquid Substances 0.000 claims description 11
- 238000009833 condensation Methods 0.000 claims description 8
- 230000005494 condensation Effects 0.000 claims description 8
- 238000001704 evaporation Methods 0.000 claims description 8
- 230000008020 evaporation Effects 0.000 claims description 8
- 238000010521 absorption reaction Methods 0.000 claims description 4
- 230000000149 penetrating effect Effects 0.000 claims description 4
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 3
- 239000011148 porous material Substances 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims 3
- 238000003780 insertion Methods 0.000 claims 3
- 238000009413 insulation Methods 0.000 description 12
- 238000005553 drilling Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 2
- 239000004568 cement Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- -1 polyethylene Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 238000004321 preservation Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
Abstract
The utility model belongs to the technical field of new energy, and particularly relates to a geothermal energy extraction device based on support piles, which comprises support pile bodies, wherein a plurality of support pile bodies are uniformly distributed around a foundation pit, every other support pile body is communicated with a heat collector through a heat exchange pipe system, the heat exchange pipe system comprises a water inlet main pipe and a water outlet main pipe, two vertically symmetrical steel pipes are arranged in a steel bar cage, one steel pipe is internally penetrated with a water inlet branch pipe, the other steel pipe is internally penetrated with a water outlet branch pipe, the middle parts of the two steel pipes are respectively provided with a hole, the bottoms of the water inlet branch pipe and the water outlet branch pipe are connected with a heat exchange pipe, the heat exchange pipe extends from the hole of one steel pipe, is arranged in the steel bar cage to the bottom of the steel bar cage by an S-shaped disc, then enters the other steel pipe from the hole and is communicated with the water outlet branch pipe, the water inlet branch pipe is connected with the water inlet main pipe, and the water outlet branch pipe is connected with the water outlet main pipe.
Description
Technical Field
The utility model belongs to the technical field of new energy, and particularly relates to a geothermal energy extraction device based on a support pile.
Background
The geothermal energy is a green low-carbon renewable energy source capable of being recycled, and has the advantages of large geothermal energy resource reserves, wide distribution, huge market potential and wide development prospect. The development and utilization of geothermal energy have important significance for adjusting energy structure, saving energy, reducing emission and improving environment. At present, shallow geothermal energy is mainly utilized in a ground source heat pump technology, and the ground source heat pump technology is used for heating and refrigerating an upper building by extracting the geothermal energy, but the ground source heat pump technology occupies a large area and has relatively large input cost, so that the ground source heat pump technology is limited to a certain extent in popularization and use. In order to solve the problem, the heat exchange device is combined with the traditional underground structure, so that the exploitation and utilization of shallow geothermal energy are achieved while the conventional functions are met.
The energy underground structure represented by the energy pile technology has the advantages of saving the occupied area, simultaneously relying on high heat exchange efficiency, saving resources and the like, and has become a main form for utilizing the geothermal energy. However, the existing energy pile technology mainly uses engineering piles, the engineering piles can extract geothermal energy while bearing the load of an upper structure, and the thermal response of the engineering piles during heat exchange can have a certain influence on the bearing performance of the engineering piles.
Disclosure of Invention
The utility model aims to provide a geothermal energy extraction device based on a support pile, which can solve the problems of large amount of underground space, investment cost reduction, more efficient extraction of geothermal energy resources and no influence on the strength and stability of the support pile.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a geothermal energy extraction element based on support stake, includes the support stake pile body, pours the steel reinforcement cage in the support stake pile body, and a plurality of support stake pile bodies evenly distributed around the foundation ditch, and every other support stake pile body passes through heat exchange tube system intercommunication, and heat exchange tube system is connected with the heat collector, heat exchange tube system is responsible for including the water inlet pipe and is responsible for with the water outlet, be equipped with two vertical symmetrical steel pipes in the steel reinforcement cage, wears to establish the water inlet branch pipe in one of them steel pipe, wears to establish the water outlet branch pipe in another steel pipe, and two steel pipe middle parts are equipped with a hole respectively, and the hole is located below the foundation ditch bottom, and water inlet branch pipe and water outlet branch pipe bottom all are connected with the heat exchange tube, and water inlet branch pipe, water outlet branch pipe, heat exchange tube are integrated in a pipe, all adopt polyethylene pipe material, and water inlet pipe and water outlet are responsible for polyurethane heat preservation pipe, and its function is decided according to its position and effect, and the part that is located below the foundation ditch bottom ligature around the steel pipe is responsible for the water inlet pipe, is located for the water inlet branch pipe in the water inlet end, is located in the water outlet branch pipe, and water outlet branch pipe from one steel pipe, and water outlet branch pipe is located in the water outlet, and stretch out from a hole to water inlet and water outlet pipe and water inlet pipe are linked through the control plate and water inlet and outlet.
Further, the periphery of the bottom part of the support pile body, which is positioned at the bottom part of the foundation pit, is provided with a plurality of heat pipe jacks, the heat pipe jacks are inclined upward holes, a heat pipe is arranged in each heat pipe jack, the heat pipe comprises a pipe shell and an end cover, negative pressure is arranged in the pipe shell, the wall of the pipe shell is provided with a liquid absorption core, the liquid absorption core is made of capillary porous materials, and low-boiling-point liquid is arranged in the pipe shell.
Further, still include the heat insulating board, the heat insulating board sets up between intake branch pipe and play water branch pipe and fix in the steel reinforcement cage, and heat insulating board length is the same with foundation ditch degree of depth.
Furthermore, water or alcohol is arranged in the heat exchange tube, and the tops of the adjacent support pile bodies are connected with each other through the crown beam.
Further, the heat pipe comprises a condensation section and an evaporation section, wherein the condensation section is positioned in the jack, and the evaporation section is positioned in the soil body.
A construction method of a geothermal energy extraction device based on a support pile mainly comprises the following technical steps:
1. preparing before construction, drilling a hole, drilling a heat pipe jack at a corresponding position of the side wall of the hole after the hole is formed, and finally cleaning the drill hole and the jack to ensure that no mud blocks exist in the hole;
2. while drilling, manufacturing a reinforcement cage, welding a group of symmetrical longitudinal ribs of the reinforcement cage on the reinforcing stirrups by replacing steel pipes, arranging a water inlet branch pipe and a water outlet branch pipe in the steel pipes, penetrating out the heat exchange pipes from small holes in the middle of the steel pipes, and binding and fixing the heat exchange pipes on the longitudinal ribs of the reinforcement cage; the upper ends of the two steel pipes are higher than the lengths of other longitudinal ribs and can penetrate through the top of the crown beam, the water inlet branch pipe orifice and the water outlet branch pipe orifice are exposed out of the steel reinforcement cage, and the pipe orifice and the steel pipe ends are covered with temporary plugs; placing a heat insulation plate in the reinforcement cage, wherein the heat insulation plate is fixed on the reinforcement cage and positioned in the middle of the pile, so that the water inlet branch pipe and the water outlet branch pipe are just separated;
3. a reinforcement cage is lowered into the drilled hole by adopting a crane, so that one of the water inlet branch pipe and the water outlet branch pipe is positioned at one side close to the foundation pit, and the other side far away from the foundation pit; after the reinforcement cage is lowered and fixed, cement slurry is injected into the jack of the side wall of the hole, and then the heat pipe is inserted into the drilled jack for maintenance;
4. pouring concrete into the drilled holes with the reinforcement cages downwards, vibrating and compacting the concrete to form a cast-in-place support pile, arranging a crown beam at the top of the support pile after the cast-in-place pile is constructed, and enabling a water inlet branch pipe orifice and a water outlet branch pipe orifice to extend out of the top of the crown beam;
5. and a water inlet main pipe and a water outlet main pipe are paved near the crown beam, the water inlet branch pipe and the water outlet branch pipe are connected with the water inlet main pipe and the water outlet main pipe by valves, and finally, the water inlet main pipe and the water outlet main pipe are connected with the heat collector to form a complete circulation loop.
The utility model has the advantages that: the utility model combines the support pile and the heat exchanger, which can save underground space resource and reuse the support pile to achieve the effect of one pile for multiple purposes; the geothermal energy can be efficiently extracted, the transportation consumption of heat exchange liquid can be reduced by adopting a novel pipe distribution mode, and the integrity of the heat exchange pipe and the steel reinforcement cage can be enhanced when the heat exchange pipe is protected by the arrangement of the steel pipes; the heat pipe inserted into the soil body can transfer heat in the soil body which is farther away from the pile body into the support pile, so that the heat in the soil body is extracted to a greater extent, and more heat can be gathered by arranging the water inlet main pipe and the water outlet main pipe; the temperature stress that heat produced in the heat exchange pipeline can make the support stake more stable, can help the support stake to resist the stress of soil body, makes it more firm, in addition, to installation and follow-up maintenance and inspection, the setting of valve can more convenient implementation these operations to can not influence the heat exchange pipeline in other support stake, the cost in the construction that significantly reduces.
Drawings
Fig. 1 is a schematic plan view of the present utility model.
Fig. 2 is a cross-sectional view of a single pile according to the present utility model.
Fig. 3 is a schematic view of the reinforcement cage of the present utility model.
FIG. 4 is a schematic view of a heat pipe according to the present utility model.
Detailed Description
As shown in the figure, the geothermal energy extraction device based on the supporting piles comprises a supporting pile body 1, a steel reinforcement cage cast in the supporting pile body, a plurality of supporting pile bodies are uniformly distributed around a foundation pit, every other supporting pile body is mutually communicated through a heat exchange pipe system, the heat exchange pipe system is connected with a heat collector 4, the heat exchange pipe system comprises a water inlet main pipe 2 and a water outlet main pipe 3, two steel pipes 11 which are vertically and symmetrically arranged are arranged in the steel reinforcement cage, one of the steel pipes is internally penetrated by a water inlet branch pipe 5, the other steel pipe is internally penetrated by a water outlet branch pipe 6, a hole is respectively arranged in the middle of each of the two steel pipes, the holes are arranged below the bottom of the foundation pit, the bottoms of the water inlet branch pipe 5 and the water outlet branch pipe 6 are both connected with a heat exchange pipe 7, the water inlet branch pipe, the water outlet branch pipe and the heat exchange pipe are integrated into one pipe, polyethylene pipes are adopted, the water inlet main pipe and the water outlet main pipe are polyurethane heat preservation pipes, the functions of the water inlet main pipe and the water outlet main pipe are determined according to the positions and actions of the water inlet main pipe and the water outlet main pipe, the parts, which are positioned below soil bodies and bound around the steel pipes, are the heat exchange pipes, the water inlet branch pipes are positioned in the water inlet end steel pipes, the water outlet branch pipes are positioned in the water outlet end steel pipes, the heat exchange pipes extend out of holes of one steel pipe, are arranged around the steel pipes to the bottom of a reinforcement cage through S-shaped discs, then enter the steel pipes from the holes of the other steel pipes and are communicated with the water outlet branch pipes, the water inlet branch pipes are communicated with a water inlet main pipe and controlled through a valve 8, and the water outlet branch pipes are communicated with the water outlet main pipe and controlled through the valve; the bottom of the support pile body is provided with a plurality of heat pipe jacks at the periphery of the soil body part, the heat pipe jacks are holes inclined upwards, a heat pipe 9 is arranged in each heat pipe jack, the heat pipe comprises a pipe shell and an end cover, negative pressure is arranged in the pipe shell, a liquid suction core is arranged on the pipe shell wall, the liquid suction core is made of capillary porous materials, and low-boiling-point liquid is arranged in the pipe shell; the heat insulation plate 10 is arranged between the water inlet branch pipe and the water outlet branch pipe and is fixed in the reinforcement cage, and the length of the heat insulation plate is the same as the depth of the foundation pit; water or alcohol is arranged in the heat exchange tube, and the tops of the adjacent supporting pile bodies are connected with each other through crown beams; the heat pipe comprises a condensation section, an insulation section and an evaporation section, wherein the condensation section is positioned in the jack, the evaporation section is positioned in the soil body, and the insulation section is positioned in the middle.
Specifically, two symmetrical longitudinal ribs in the steel reinforcement cage are replaced by corresponding steel pipes, the heat exchange pipe 7 adopts an S-shaped pipe arrangement mode and is arranged at the lower part of the support pile, the water inlet branch pipe 5 and the water outlet branch pipe 6 are arranged in the steel pipe 11, the heat exchange pipe 7 is bound and fixed on the longitudinal ribs of the steel reinforcement cage, the water inlet branch pipe 5, the water outlet branch pipe 6 and the heat exchange pipe 7 are the same pipe, one pipeline is arranged in each support pile and is connected with the corresponding water inlet main pipe 2 and the water outlet main pipe 3 through the valve 8, the heat insulation board 10 separates the water inlet branch pipe 5 and the water outlet branch pipe 6 in the support pile 1, the heat insulation board 10 is fixed in the steel reinforcement cage, the top end of the heat insulation board is flush with the top end of the support pile, the lower end of the heat insulation board reaches the bottom of a foundation pit, jacks of the heat pipes 9 are arranged in the holes of the support pile, the jacks and the pile walls form a certain angle, liquid in the heat pipes can flow under the gravity of the jacks, the evaporation sections of the heat pipes 9 are longer than the condensation sections, the evaporation sections are positioned in the support piles, the support piles are positioned in the support piles, heat is absorbed in the soil bodies around the support piles, the condensation sections are positioned in the support piles, the heat is released from the surrounding the support piles, the soil bodies, heat is continuously absorbed by the heat is continuously, the heat is provided for the support soil energy is continuously released from the soil body around the soil.
A construction method of a geothermal energy extraction device based on a support pile mainly comprises the following technical steps:
1. preparing before construction, drilling a hole, drilling a jack of the heat pipe 9 at a corresponding position of the side wall of the hole after the hole is formed, and finally cleaning the drill hole and the jack to ensure that no mud blocks exist in the hole;
2. while drilling, manufacturing a reinforcement cage, replacing and welding a group of symmetrical longitudinal ribs of the reinforcement cage on the reinforcing stirrups by using steel pipes 11, arranging a water inlet branch pipe 5 and a water outlet branch pipe 6 in the steel pipes 11, penetrating out a heat exchange pipe 7 from a small hole in the middle of the steel pipes, and binding and fixing the heat exchange pipe on the longitudinal ribs of the reinforcement cage; the upper ends of the two steel pipes 11 are higher than the lengths of other longitudinal ribs and can penetrate through the top of the crown beam, the water inlet branch pipe orifice and the water outlet branch pipe orifice are exposed outside the steel reinforcement cage, and the pipe orifice and the steel pipe ends are covered with temporary plugs; placing a heat insulation board 10 in the reinforcement cage, wherein the heat insulation board 10 is fixed on the reinforcement cage and positioned in the middle of the pile, so that the water inlet branch pipe 5 and the water outlet branch pipe 6 are just separated;
3. a crane is adopted to put down a reinforcement cage into a drill hole, so that the water outlet branch pipe 6 is positioned at one side close to the foundation pit, and the water inlet branch pipe 5 is positioned at one side far from the foundation pit; after the reinforcement cage is lowered and fixed, cement slurry is injected into the jack of the side wall of the hole, and then the heat pipe 9 is inserted into the drilled jack for maintenance;
4. pouring concrete into the drilled holes with the reinforcement cages downwards, vibrating and compacting the concrete to form a cast-in-place support pile 1, arranging a crown beam at the top of the support pile 1 after the cast-in-place pile is constructed, and enabling a water inlet branch pipe orifice and a water outlet branch pipe orifice to extend out of the top of the crown beam;
5. the water inlet main pipe 2 and the water outlet main pipe 3 are paved near the crown beam, the water inlet branch pipe 5 and the water outlet branch pipe 6 are connected with the water inlet main pipe 2 and the water outlet main pipe 3 by utilizing the valve 8, and finally, the water inlet main pipe 2 and the water outlet main pipe 3 are connected with the heat collector 4 to form a complete circulation loop.
Claims (5)
1. The utility model provides a geothermal energy extraction element based on prop stake, includes to prop the stake pile body, pours the steel reinforcement cage in prop the stake of stake pile body, a plurality of stake pile body evenly distributed around the foundation ditch, and every other stake pile body of prop through heat exchange tube system intercommunications, heat exchange tube system is connected its characterized in that with the heat collector: the heat exchange pipe system comprises a water inlet main pipe and a water outlet main pipe, two steel pipes which are vertically and symmetrically arranged are arranged in the steel reinforcement cage, a water inlet branch pipe is arranged in one steel pipe in a penetrating manner, a water outlet branch pipe is arranged in the other steel pipe in a penetrating manner, holes are respectively formed in the middle of the two steel pipes, the holes are arranged below the bottom of a foundation pit, the bottoms of the water inlet branch pipe and the water outlet branch pipe are connected with the heat exchange pipe, the heat exchange pipe extends out of the holes of one steel pipe, extends out of the holes of the other steel pipe, is arranged around the steel pipe to the bottom of the steel reinforcement cage through an S-shaped disc, enters the steel pipe from the other steel pipe hole and is communicated with the water outlet branch pipe, the water inlet branch pipe is communicated with the water inlet main pipe and is controlled through a valve, and the water outlet branch pipe is communicated with the water outlet main pipe and is controlled through the valve.
2. The stake-based geothermal energy extraction apparatus of claim 1, wherein: the support pile comprises a support pile body, wherein the bottom of the support pile body is positioned at the periphery of the bottom part of a foundation pit, a plurality of heat pipe insertion holes are formed in the periphery of the bottom part of the foundation pit, the heat pipe insertion holes are inclined holes, a heat pipe is arranged in each heat pipe insertion hole, the heat pipe comprises a pipe shell and an end cover, negative pressure is arranged in the pipe shell, a liquid absorption core is arranged on the wall of the pipe shell, the liquid absorption core is made of capillary porous materials, and low-boiling-point liquid is arranged in the pipe shell.
3. The support pile-based geothermal energy extraction apparatus of claim 2, wherein: the foundation pit is characterized by further comprising a heat insulating plate, wherein the heat insulating plate is arranged between the water inlet branch pipe and the water outlet branch pipe and is fixed in the reinforcement cage, and the length of the heat insulating plate is the same as the depth of the foundation pit.
4. A stake based geothermal energy extraction apparatus according to claim 3, wherein: the heat exchange tube is internally filled with water or alcohol, and the adjacent support pile bodies are connected with each other through the crown beam.
5. The stake-based geothermal energy extraction apparatus of claim 4, wherein: the heat pipe comprises a condensation section and an evaporation section, the condensation section is positioned in the jack, and the evaporation section is positioned in the soil body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320828420.3U CN220169698U (en) | 2023-04-14 | 2023-04-14 | Geothermal energy extraction element based on support stake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320828420.3U CN220169698U (en) | 2023-04-14 | 2023-04-14 | Geothermal energy extraction element based on support stake |
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| Publication Number | Publication Date |
|---|---|
| CN220169698U true CN220169698U (en) | 2023-12-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320828420.3U Active CN220169698U (en) | 2023-04-14 | 2023-04-14 | Geothermal energy extraction element based on support stake |
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| Country | Link |
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| CN (1) | CN220169698U (en) |
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- 2023-04-14 CN CN202320828420.3U patent/CN220169698U/en active Active
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