High temperature geothermal conversion heat energy release device for middle-deep geothermal energy

Abstract

This utility model relates to the field of geothermal energy utilization technology, and in particular to a high-temperature geothermal energy conversion and heat release device for medium-deep geothermal energy. It includes a heat-conducting sleeve, heat conduction pipes, and a confluence pipe. Multiple sets of heat conduction pipes are arranged in an array inside the heat-conducting sleeve. Multiple sets of ribs are fixedly installed around the heat conduction pipes and are fixedly connected to the heat-conducting sleeve. The heat-conducting sleeve is filled with thermally conductive gel. One end of each set of heat conduction pipes is connected to the confluence pipe. An evaporation chamber is provided inside the heat-conducting sleeve, and the confluence pipe communicates with the evaporation chamber. This utility model increases the contact area through the ribs, and in conjunction with the thermally conductive gel inside the heat-conducting sleeve, it can absorb geothermal energy and transfer it to the heat conduction pipes, heating the circulating fresh water inside the heat conduction pipes to extract geothermal energy. The heated hot water from the multiple sets of heat conduction pipes is then discharged into the evaporation chamber through the confluence pipe, evaporated into high-temperature steam, and then delivered to the energy conversion component for geothermal utilization.

Description

Technical Field

[0001] This utility model relates to the field of geothermal energy utilization technology, and in particular to a device for high-temperature geothermal energy conversion and heat release from medium-deep geothermal energy. Background Technology

[0002] Geothermal energy has received widespread attention as a clean and renewable energy source. Medium-deep geothermal energy has advantages such as high temperature, large reserves, and good stability, making it easy to utilize directly.

[0003] Common geothermal energy conversion devices have poor geothermal energy conversion efficiency. They only absorb and convert geothermal energy directly through fresh water medium inside the conduit. The conversion structure is relatively simple, the underground heat conduction efficiency is low, and the thermal energy of the geothermal fluid is not fully extracted.

[0004] Therefore, to address the above issues, a medium-deep geothermal energy high-temperature geothermal conversion and heat release device can be designed to efficiently conduct and utilize underground heat energy, thereby improving the efficiency of geothermal resource development and utilization. Utility Model Content

[0005] To overcome the problems of poor geothermal energy conversion effect of common geothermal energy conversion devices, which only absorb and convert geothermal energy directly through fresh water medium inside the conduit, have a relatively simple conversion structure, low underground heat conduction efficiency, and insufficient extraction of thermal energy from geothermal fluids.

[0006] The technical solution of this utility model is as follows: a medium-deep geothermal energy high-temperature geothermal conversion and heat release device, including a hot hole sleeve, a heat conduction pipe, a branch pipe, a confluence pipe, an energy transducer, and a return component. The hot hole sleeve has multiple sets of heat conduction pipes arranged in an array inside. Multiple sets of ribs are fixedly installed on the periphery of the heat conduction pipes and are fixedly connected to the hot hole sleeve. The hot hole sleeve is filled with thermally conductive gel. One end of the multiple sets of heat conduction pipes is connected to the branch pipe, and the other end of the multiple sets of heat conduction pipes is connected to the confluence pipe. An evaporation chamber is provided inside the hot hole sleeve, and the confluence pipe is connected to the evaporation chamber. The energy transducer is located above the hot hole sleeve, and the return component is located on one side of the energy transducer.

[0007] Preferably, multiple arrays of heat conduction pipes are installed inside underground hot holes using a hot hole sleeve. The thermally conductive gel inside the hot hole sleeve can absorb geothermal heat and transfer it to the heat conduction pipes, thereby heating the circulating fresh water inside the heat conduction pipes and extracting geothermal energy. By setting ribs, multiple sets of heat conduction pipes are fixed inside the hot hole sleeve, which can increase the contact area and improve the heat transfer efficiency of the heat conduction pipes. By setting a confluence pipe, the heated hot water in multiple sets of heat conduction pipes can be discharged into the evaporation chamber. The circulating fresh water evaporates rapidly in the evaporation chamber and is transported to the energy transducer to utilize the extracted geothermal energy. By setting a return component, the circulating fresh water after heat extraction can be transported to the branch pipe and then transported back to the interior of each heat conduction pipe for further geothermal energy extraction.

[0008] Preferably, multiple sets of heat-conducting columns are fixedly installed on the periphery of the hot hole sleeve, and the surface of the rib plate is provided with recessed texture.

[0009] Preferably, the transducer assembly includes a mounting box and a first delivery pipe. The mounting box is positioned above the hot hole sleeve, and the mounting box and the hot hole sleeve are connected through the first delivery pipe.

[0010] Preferably, the transducer assembly includes a steam turbine generator fixedly mounted on one side of the mounting box, with the input end of the steam turbine generator located inside the mounting box.

[0011] As a preferred option, the first conveying pipe has a double-layer structure, with an inner layer of corrosion-resistant alloy and an outer layer of insulation.

[0012] Preferably, the energy exchanger assembly includes a heat exchanger, a connection port, and a second delivery pipe. The second delivery pipe is connected to the upper end of the mounting box, and the heat exchanger is located around the second delivery pipe. Two sets of connection ports are connected to the periphery of the heat exchanger.

[0013] Preferably, the reflux assembly includes a water pump and a third delivery pipe. The water pump is located on one side of the heat exchanger. The input end of the water pump is connected to the second delivery pipe, and the third delivery pipe is connected to the output end of the water pump. The third delivery pipe is also connected to the branch pipe.

[0014] The beneficial effects of this utility model are:

[0015] 1. Multiple arrays of heat conduction pipes are installed inside underground geothermal boreholes via a heat-perforated casing. Multiple sets of heat-conducting columns installed around the heat-perforated casing increase the contact area between the casing and the soil in the geothermal borehole, thereby improving the efficiency of geothermal energy collection and extraction. The ribs further increase the contact area, and together with the thermally conductive gel inside the casing, the heat-perforated casing can quickly absorb geothermal energy and transfer it to the heat conduction pipes, thereby heating the circulating fresh water inside the heat conduction pipes for geothermal energy extraction. The ribs fix multiple sets of heat conduction pipes inside the heat-perforated casing. The recessed texture on the surface of the ribs increases the surface area of ​​the ribs, improving the efficiency of heat transfer from the thermally conductive gel inside the casing and enhancing the conversion efficiency of geothermal energy. The heated hot water from the multiple sets of heat conduction pipes can be discharged into the evaporation chamber through the confluence pipe. The circulating fresh water evaporates rapidly in the evaporation chamber and is then transported to the energy conversion component for geothermal energy extraction and utilization. Geothermal energy can be absorbed and extracted simultaneously through both the heat conduction pipes and the evaporation chamber, effectively improving the conversion effect of geothermal energy.

[0016] 2. The thermal energy of high-temperature steam can be fully utilized through steam turbine generators and heat exchangers, effectively improving the conversion and release effect of geothermal energy. Attached Figure Description

[0017] Figure 1 The diagram shown is a three-dimensional structural schematic of the medium-deep geothermal energy high-temperature geothermal conversion and heat release device of this utility model.

[0018] Figure 2 The diagram shown is a three-dimensional structural schematic of the energy conversion component and the return component of the medium-deep geothermal energy high-temperature geothermal conversion and heat release device of this utility model.

[0019] Figure 3 The diagram shown is a three-dimensional cross-sectional view of the hot hole sleeve of the medium-deep geothermal energy high-temperature geothermal conversion and heat release device of this utility model.

[0020] Figure 4 The diagram shown is a three-dimensional cross-sectional view of the first delivery pipe of the medium-deep geothermal energy high-temperature geothermal conversion heat energy release device of this utility model.

[0021] Explanation of reference numerals in the attached drawings: 1. Hot hole sleeve; 101. Evaporation chamber; 102. Heat conduction column; 2. Heat conduction pipe; 201. Rib plate; 202. Recessed texture; 3. Diverter pipe; 4. Merging pipe; 5. Mounting box; 501. First conveying pipe; 502. Corrosion-resistant alloy layer; 503. Insulation layer; 6. Steam turbine generator; 7. Heat exchanger; 701. Connection port; 702. Second conveying pipe; 8. Water pump; 801. Third conveying pipe. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] Please see Figure 1 and Figure 3 This utility model provides an embodiment of a medium-deep geothermal energy high-temperature geothermal conversion and heat release device, comprising a hot-hole sleeve 1, heat conduction pipes 2, branch pipes 3, confluence pipes 4, an energy transducer assembly, and a return assembly. Multiple sets of heat conduction pipes 2 are arrayed inside the hot-hole sleeve 1, and multiple sets of ribs 201 are fixedly installed around the periphery of the heat conduction pipes 2. The ribs 201 are fixedly connected to the hot-hole sleeve 1. The hot-hole sleeve 1 is filled with thermally conductive gel. One end of each set of heat conduction pipes 2 is connected to a branch pipe 3, and the other end is connected to a confluence pipe 4. An evaporation chamber 101 is provided inside the hot-hole sleeve 1, and the confluence pipe 4 communicates with the evaporation chamber 101. The energy transducer assembly is located above the hot-hole sleeve 1, and the return assembly is located on one side of the energy transducer assembly. The hot-hole sleeve 1 is used to connect multiple sets of heat conduction pipes 2. The array of heat conduction pipes 2 are installed inside underground hot holes. The thermally conductive gel inside the hot hole sleeve 1 can absorb geothermal heat from the hot hole sleeve 1 and transfer it to the heat conduction pipes 2, thereby heating the circulating fresh water in the heat conduction pipes 2 and extracting geothermal energy. By setting ribs 201, multiple sets of heat conduction pipes 2 are fixed inside the hot hole sleeve 1, which can increase the contact area and improve the heat transfer efficiency of the heat conduction pipes 2. By setting confluence pipes 4, the heated hot water in multiple sets of heat conduction pipes 2 can be discharged into the evaporation chamber 101. The circulating fresh water evaporates rapidly in the evaporation chamber 101 and is transported to the energy transducer to utilize the extracted geothermal energy. By setting reflux components, the circulating fresh water after heat extraction can be transported to the diversion pipes 3 and then transported back to the interior of each heat conduction pipe 2 to extract geothermal energy again.

[0024] Please see Figure 2 and Figure 4In this embodiment, the transducer assembly includes a mounting box 5 and a first conveying pipe 501. The mounting box 5 is positioned above the hot-hole sleeve 1, and the mounting box 5 and the hot-hole sleeve 1 are connected through the first conveying pipe 501. The transducer assembly includes a steam turbine generator 6 fixedly mounted on one side of the mounting box 5, with the input end of the steam turbine generator 6 located inside the mounting box 5. By providing the first conveying pipe 501, high-temperature steam discharged from the evaporation chamber 101 can be conveyed into the interior of the mounting box 5, thereby driving the steam turbine generator 6 to generate electricity. The first conveying pipe 501 has a double-layer structure, with an inner corrosion-resistant alloy layer 502 and an outer insulation layer 503. The double-layer structure of the first conveying pipe 501 can effectively reduce steam pressure through the insulation layer 503. The heat lost during transmission is mitigated, and the corrosion-resistant alloy layer 502 prevents the first conveying pipe 501 from leaking due to steam corrosion during long-term operation. The energy exchange component includes a heat exchanger 7, a connection port 701, and a second conveying pipe 702. The second conveying pipe 702 is connected to the upper end of the mounting box 5, and the heat exchanger 7 is located around the second conveying pipe 702. Two sets of connection ports 701 are connected to the periphery of the heat exchanger 7. By setting the second conveying pipe 702, high-temperature steam leaving the mounting box 5 can be conveyed into the interior of the heat exchanger 7, and fresh water can be input or output into the interior of the heat exchanger 7 through the two sets of connection ports 701. The heat in the high-temperature steam can be released and extracted, causing the steam inside the second conveying pipe 702 to liquefy into water.

[0025] Please see Figure 1 and Figure 3 In this embodiment, multiple sets of heat-conducting columns 102 are fixedly installed on the periphery of the hot hole sleeve 1, and the surface of the rib plate 201 is provided with recessed textures 202. By setting the heat-conducting columns 102, the contact area between the hot hole sleeve 1 and the soil in the geothermal hole can be increased, thereby improving the efficiency of geothermal energy collection and extraction. The recessed textures 202 on the surface of the rib plate 201 can increase the surface area of ​​the rib plate 201, thereby improving the efficiency of heat transfer from the heat-conducting gel inside the hot hole sleeve 1. The reflux assembly includes a water pump 8 and a third delivery pipe 801. The water pump 8 is set on one side of the heat exchanger 7. The input end of the water pump 8 is connected to the second delivery pipe 702, and the third delivery pipe 801 is connected to the output end of the water pump 8. The third delivery pipe 801 is connected to the diversion pipe 3. By setting the water pump 8, the liquefied circulating fresh water can be input into the interior of the diversion pipe 3 through the third circulation pipe, so that it can re-enter the multiple sets of heat conduction pipes 2 to extract geothermal energy from the hot hole.

[0026] During operation, multiple arrays of heat conduction pipes 2 are installed inside underground geothermal boreholes using a hot hole sleeve 1. Multiple sets of heat-conducting columns 102 installed around the hot hole sleeve 1 can increase the contact area between the hot hole sleeve 1 and the soil in the geothermal borehole, thereby improving the efficiency of geothermal energy collection and extraction. The thermally conductive gel inside the hot hole sleeve 1 can transfer the geothermal energy absorbed by the hot hole sleeve 1 to the heat conduction pipes 2, thereby heating the circulating fresh water in the heat conduction pipes 2 and extracting geothermal energy. Multiple sets of heat conduction pipes 2 are fixed inside the hot hole sleeve 1 using ribs 201. The recessed textures 202 on the surface of the ribs 201 can increase the surface area of ​​the ribs 201 and improve the efficiency of the ribs 201 in transferring heat from the thermally conductive gel inside the hot hole sleeve 1, thereby improving the conversion efficiency of geothermal energy.

[0027] The hot water heated in multiple heat conduction pipes 2 can be discharged into the evaporation chamber 101 through the confluence pipe 4. The circulating fresh water evaporates rapidly in the evaporation chamber 101 and is transported into the interior of the installation box 5 through the first delivery pipe 501. The steam turbine generator 6 installed on one side of the installation box 5 is used to generate electricity.

[0028] Then, the high-temperature steam leaving the installation box 5 can be transported into the heat exchanger 7 through the second conveying pipe 702, and fresh water can be input or output into the heat exchanger 7 through two sets of connection ports 701. The heat in the high-temperature steam can be released and exchanged for utilization. At the same time, the steam inside the second conveying pipe 702 is liquefied into water. The water pump 8 is used to send the liquefied water back into the diversion pipe 3 through the third conveying pipe 801, and then re-transported to each heat conduction pipe 2 to collect and extract geothermal energy.

[0029] Through the above steps, the contact area is increased by the rib plate 201. Combined with the thermally conductive gel inside the heat-perforated sleeve 1, the heat-perforated sleeve 1 can quickly absorb geothermal energy and transfer it to the heat conduction pipe 2, heating the circulating fresh water in the heat conduction pipe 2, thereby extracting geothermal energy. Then, through the confluence pipe 4, the heated hot water in multiple sets of heat conduction pipes 2 can be discharged into the evaporation chamber 101, evaporated into high-temperature steam, and then transported to the energy conversion component for geothermal utilization. Geothermal energy can be absorbed and extracted simultaneously through the heat conduction pipe 2 and the evaporation chamber 101, effectively improving the geothermal energy conversion effect. This solves the problem of poor geothermal energy conversion effect in common geothermal energy conversion devices, which only directly absorb and convert geothermal energy through the fresh water medium inside the conduit. The conversion structure is relatively simple, the underground heat conduction efficiency is low, and the thermal energy extraction of geothermal fluid is insufficient.

[0030] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A medium-deep geothermal energy high-temperature geothermal conversion and heat release device, comprising a hot-hole sleeve (1), characterized in that: It also includes a heat conduction tube (2), a branch tube (3), a confluence tube (4), a transducer assembly, and a return assembly. The internal array of the heat hole sleeve (1) is provided with multiple sets of heat conduction tubes (2). Multiple sets of ribs (201) are fixedly installed on the periphery of the heat conduction tubes (2). The ribs (201) are fixedly connected to the heat hole sleeve (1). The heat hole sleeve (1) is filled with thermal conductive gel. One end of the multiple sets of heat conduction tubes (2) is connected to the branch tube (3). The other end of the multiple sets of heat conduction tubes (2) is connected to the confluence tube (4). The internal of the heat hole sleeve (1) is provided with an evaporation chamber (101). The confluence tube (4) is connected to the evaporation chamber (101). The transducer assembly is located above the heat hole sleeve (1), and the return assembly is located on one side of the transducer assembly.

2. The medium-deep geothermal energy high-temperature geothermal conversion and heat release device according to claim 1, characterized in that: Multiple sets of heat-conducting columns (102) are fixedly installed on the periphery of the hot hole sleeve (1), and the surface of the rib plate (201) is provided with recessed texture (202).

3. The medium-deep geothermal energy high-temperature geothermal conversion and heat release device according to claim 1, characterized in that: The transducer assembly includes a mounting box (5) and a first delivery pipe (501). The mounting box (5) is located above the hot hole sleeve (1), and the mounting box (5) and the hot hole sleeve (1) are connected through the first delivery pipe (501).

4. The medium-deep geothermal energy high-temperature geothermal conversion and heat release device according to claim 3, characterized in that: The transducer assembly includes a steam turbine generator (6) fixedly installed on one side of the mounting box (5), with the input end of the steam turbine generator (6) located inside the mounting box (5).

5. The medium-deep geothermal energy high-temperature geothermal conversion and heat release device according to claim 4, characterized in that: The first conveying pipe (501) has a double-layer structure, with an inner layer of corrosion-resistant alloy (502) and an outer layer of insulation (503).

6. The medium-deep geothermal energy high-temperature geothermal conversion and heat release device according to claim 5, characterized in that: The energy exchanger assembly includes a heat exchanger (7), a connection port (701), and a second delivery pipe (702). The second delivery pipe (702) is connected to the upper end of the mounting box (5). The heat exchanger (7) is located on the periphery of the second delivery pipe (702). Two sets of connection ports (701) are connected to the periphery of the heat exchanger (7).

7. The medium-deep geothermal energy high-temperature geothermal conversion and heat release device according to claim 6, characterized in that: The reflux assembly includes a water pump (8) and a third delivery pipe (801). The water pump (8) is located on one side of the heat exchanger (7). The input end of the water pump (8) is connected to the second delivery pipe (702). The third delivery pipe (801) is connected to the output end of the water pump (8). The third delivery pipe (801) is connected to the branch pipe (3).

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