Dry hot rock terrestrial heat exploitation device

Abstract

The utility model relates to a hot dry rock terrestrial heat mining device, which belongs to the terrestrial heat mining field and comprises two bases, two supporting columns fixedly connected to the upper surfaces of the bases, a fixing plate fixedly connected among the top ends of the four supporting columns, a mounting frame fixedly connected between the upper surfaces of the two bases and a heat exchanger fixedly connected to the inner side of the mounting frame. A mounting opening is formed in the inner side of the fixing plate, and a heat collecting structure used for exploiting terrestrial heat is arranged on the inner side of the mounting opening of the fixing plate. According to the hot dry rock terrestrial heat exploitation device, through the optimal design of a heat collection structure, heat loss is effectively reduced, the utilization efficiency of heat energy is improved, through optimization of connection of all structural components, the time needed for installation and disassembly is greatly shortened, the working efficiency is improved, the labor cost is reduced, and through disassembly of the connecting assembly and other detachable components, the production efficiency of terrestrial heat is greatly improved. And the overall weight of the device can be obviously reduced, so that the device is more convenient to carry or migrate to a new mining site.

Description

Technical Field

[0001] This utility model relates to a device for geothermal extraction from dry hot rock, belonging to the field of geothermal extraction. Background Technology

[0002] Hot dry rock geothermal resources, as a clean and renewable energy source, have received widespread attention and research globally in recent years. Hot dry rock geothermal extraction equipment, as key equipment for developing and utilizing these resources, directly impacts the extraction cost and application prospects of geothermal energy due to its performance, efficiency, and maintainability.

[0003] Some geothermal extraction devices made from hot dry rock often suffer from problems such as complex structure, difficult installation and disassembly, high maintenance costs, and low thermal energy utilization efficiency. In particular, when the device needs to be moved or relocated to a new extraction site, the complex structure and heavy components often cause great inconvenience to the operators. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a dry hot rock geothermal extraction device, which has advantages such as high thermal energy utilization efficiency and easy transportation.

[0005] In summary, this utility model provides the following technical solution: a dry hot rock geothermal extraction device, comprising two bases, two pillars fixedly connected to the upper surface of the bases, a fixing plate fixedly connected between the tops of the four pillars, an installation frame fixedly connected between the upper surfaces of the two bases, and a heat exchanger fixedly connected to the inner side of the installation frame. The inner side of the fixing plate is provided with an installation opening, and the inner side of the installation opening of the fixing plate is provided with a heat extraction structure for geothermal extraction.

[0006] The heat collection structure includes a shell disposed inside the mounting port of the fixed plate, a heat absorption pipe fixedly connected to the bottom shell opening of the shell, a sleeve fixedly connected to the top shell opening of the shell, a rubber sealing gasket fixedly connected to the inner wall of the sleeve, a gas transmission pipe disposed inside the rubber sealing gasket, and a steam pipe fixedly connected to the bottom end of the gas transmission pipe.

[0007] The upper surface of the fixing plate is provided with a connecting component for mounting the housing.

[0008] Furthermore, the drain outlet of the heat exchanger is connected to a water guide pipe, and a water inlet is provided on the right side wall of the shell. The end of the water guide pipe away from the heat exchanger is fixedly connected to the water inlet of the shell.

[0009] The beneficial effects of adopting the above-mentioned further solution are: by fixing the drain outlet of the heat exchanger to the inlet of the shell through the water pipe, the low-temperature liquid medium in the geothermal extraction process is recycled, improving energy utilization efficiency and reducing water waste.

[0010] Furthermore, the two pillars on the same side are arranged sequentially along the front-back direction of the base on the same side, and the mounting bracket is fixedly connected to the base by bolts.

[0011] The beneficial effects of adopting the above-mentioned further scheme are: the two pillars on the same side are arranged sequentially along the front and rear direction of the base, which enhances the stability of the device; the mounting frame is fixedly connected to the base by bolts, which facilitates disassembly and maintenance, and improves the flexibility and maintainability of the device.

[0012] Furthermore, the inlet end of the heat exchanger is fixedly connected to an external threaded connector, and the top end of the gas delivery pipe is fixedly connected to an internal threaded connector. The gas delivery pipe is fixedly connected to the heat exchanger through the external threaded connector and the internal threaded connector.

[0013] The advantages of adopting the above-mentioned further solution are: by fixing the gas pipeline to the heat exchanger with the external threaded connector and the internal threaded connector, the tightness and stability of the connection are ensured, the risk of gas leakage is reduced, the efficiency of geothermal extraction is improved, and the installation and disassembly of the heat exchanger and the gas pipeline are also facilitated.

[0014] Furthermore, a low-temperature liquid medium is provided at the bottom of the inner side of the heat absorption tube, and the outer wall of the steam tube is coated with a heat-insulating coating.

[0015] The beneficial effects of adopting the above-mentioned further scheme are: the low-temperature liquid medium at the bottom of the inner side of the heat absorber can effectively absorb geothermal energy and improve the efficiency of geothermal extraction; the heat insulation coating on the outer wall of the steam pipe reduces heat loss and maintains the high temperature of the steam, which is conducive to subsequent thermal energy utilization.

[0016] Furthermore, the connecting assembly includes two frames fixedly connected to the upper surface of the fixed plate, a threaded rod rotatably connected to the inner wall of the frame, a handwheel fixedly connected to the other end of the threaded rod, a threaded block threadedly connected to the outer side of the threaded rod, and a positioning rod fixedly connected to the opposite side wall of the two threaded blocks. Positioning blocks are fixedly connected to both the left and right sides of the housing, and positioning holes adapted to the positioning rods are opened on the opposite side wall of the positioning blocks on both the left and right sides.

[0017] The advantages of adopting the above-mentioned further solution are: the connecting assembly composed of components such as the frame, threaded rod, handwheel, threaded block and positioning rod enables the rapid installation and disassembly of the housing, facilitating replacement and maintenance; at the same time, the positioning rod and the positioning hole on the positioning block cooperate to ensure the stability and accuracy of the housing during the installation process.

[0018] Furthermore, the two frames are located on the left and right sides of the housing, respectively. The threaded rod on the left side is rotatably connected to the inner right side wall of the frame on the same side, and the threaded rod on the right side is rotatably connected to the inner left side wall of the frame on the same side.

[0019] The beneficial effect of adopting the above-mentioned further solution is that the two frames are located on the left and right sides of the shell, respectively, providing stable support for the shell.

[0020] Furthermore, the width and height of the threaded block are equal to the width and height of the frame body, and there are four positioning rods on both the left and right sides. The four positioning rods on the left side are fixedly connected to the four corners of the right side wall of the threaded block on the same side, and the four positioning rods on the right side are fixedly connected to the four corners of the left side wall of the threaded block on the same side.

[0021] The beneficial effects of adopting the above-mentioned further solution are: the width and height of the threaded block are equal to the width and height of the frame, ensuring the stability and reliability of the threaded block within the frame; the number of positioning rods on both the left and right sides is four, and they are fixedly connected to the four corners of the threaded block, further enhancing the stability and firmness of the housing during installation.

[0022] Compared with the prior art, the present invention has the following beneficial effects:

[0023] By optimizing the design of the heat collection structure, heat loss is effectively reduced and the efficiency of heat energy utilization is improved. By optimizing the connection of each structural component, the time required for installation and disassembly is greatly shortened, work efficiency is improved, and labor costs are reduced. Furthermore, by disassembling the connecting components and other detachable parts, the overall weight of the device can be significantly reduced, making it more convenient to transport or relocate the device to a new mining site. This not only reduces transportation costs but also improves the mobility and flexibility of the device. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the structure of this utility model;

[0025] Figure 2 yes Figure 1 A magnified view of part A in the middle;

[0026] Figure 3 This is a perspective view of the base, support column, and fixing plate in the structure of this utility model.

[0027] Explanation of reference numerals in the attached figures:

[0028] 1. Base; 2. Support column; 3. Fixing plate; 4. Mounting bracket; 5. Heat exchanger; 6. Shell; 7. Heat absorption pipe; 8. Sleeve; 9. Rubber sealing gasket; 10. Gas supply pipe; 11. Steam pipe; 12. Water supply pipe; 13. External threaded connector; 14. Internal threaded connector; 15. Frame; 16. Threaded rod; 17. Handwheel; 18. Threaded block; 19. Positioning rod; 20. Positioning block. Detailed Implementation

[0029] Please see Figure 1-3A geothermal extraction device for dry hot rock includes two bases 1, two pillars 2 fixedly connected to the upper surface of the bases 1, a fixing plate 3 fixedly connected between the tops of the four pillars 2, an installation frame 4 fixedly connected between the upper surfaces of the two bases 1, and a heat exchanger 5 fixedly connected to the inner side of the installation frame 4. The inner side of the fixing plate 3 has an installation opening, and the inner side of the installation opening of the fixing plate 3 has a heat extraction structure for geothermal extraction.

[0030] like Figure 1 As shown, the heat collection structure includes a shell 6 disposed inside the mounting port of the fixed plate 3, a heat absorption pipe 7 fixedly connected to the bottom shell opening of the shell 6, a sleeve 8 fixedly connected to the top shell opening of the shell 6, a rubber sealing gasket 9 fixedly connected to the inner wall of the sleeve 8, a gas transmission pipe 10 disposed inside the rubber sealing gasket 9, and a steam pipe 11 fixedly connected to the bottom end of the gas transmission pipe 10.

[0031] The upper surface of the fixing plate 3 is provided with a connecting component for mounting the housing 6.

[0032] It should be noted that the drain outlet of the heat exchanger 5 is connected to a water guide pipe 12, and the right side wall of the shell 6 is provided with a water inlet. The end of the water guide pipe 12 away from the heat exchanger 5 is fixedly connected to the water inlet of the shell 6. By fixing the drain outlet of the heat exchanger 5 to the water inlet of the shell 6 through the water guide pipe 12, the recycling of low-temperature liquid medium in the geothermal extraction process is realized.

[0033] Two support columns 2 on the same side are arranged sequentially along the front and back direction of the base 1 on the same side. The mounting frame 4 is fixedly connected to the base 1 by bolts. The arrangement of the two support columns 2 on the same side along the front and back direction of the base 1 enhances the stability of the device. The fixed connection of the mounting frame 4 to the base 1 by bolts facilitates disassembly and maintenance, and improves the flexibility and maintainability of the device.

[0034] The inlet end of the heat exchanger 5 is fixedly connected to an external threaded connector 13, and the top end of the gas transmission pipe 10 is fixedly connected to an internal threaded connector 14. The gas transmission pipe 10 is fixedly connected to the heat exchanger 5 through the external threaded connector 13 and the internal threaded connector 14. The fixed connection between the gas transmission pipe 10 and the heat exchanger 5 through the external threaded connector 13 and the internal threaded connector 14 ensures the tightness and stability of the connection, reduces the risk of gas leakage, improves the efficiency of geothermal extraction, and also facilitates the installation and disassembly of the heat exchanger 5 and the gas transmission pipe 10.

[0035] The bottom of the inner side of the heat absorber 7 is provided with a low-temperature liquid medium, which can be low-temperature liquid water. The outer wall of the steam pipe 11 is coated with a heat insulation coating. The low-temperature liquid medium at the bottom of the inner side of the heat absorber 7 can effectively absorb geothermal energy and improve the efficiency of geothermal extraction. The heat insulation coating on the outer wall of the steam pipe 11 reduces heat loss and maintains the high temperature of the steam, which is beneficial to the subsequent utilization of thermal energy.

[0036] The connecting assembly includes two frames 15 fixedly connected to the upper surface of the fixing plate 3, a threaded rod 16 rotatably connected to the inner side wall of the frame 15, a handwheel 17 fixedly connected to the other end of the threaded rod 16, a threaded block 18 threadedly connected to the outer side of the threaded rod 16, and a positioning rod 19 fixedly connected to the opposite side wall of the two threaded blocks 18. Positioning blocks 20 are fixedly connected to both the left and right sides of the housing 6, and positioning holes adapted to the positioning rod 19 are opened on the opposite side wall of the positioning blocks 20 on both the left and right sides. Through the connecting assembly composed of the frame 15, threaded rod 16, handwheel 17, threaded block 18 and positioning rod 19, the housing 6 can be quickly installed and disassembled, which is convenient for replacement and maintenance. At the same time, the positioning rod 19 cooperates with the positioning holes on the positioning blocks 20 to ensure the stability and accuracy of the housing 6 during the installation process.

[0037] The two frames 15 are located on the left and right sides of the housing 6, respectively. The left threaded rod 16 is rotatably connected to the inner right side wall of the same side frame 15, and the right threaded rod 16 is rotatably connected to the inner left side wall of the same side frame 15. The two frames 15 are located on the left and right sides of the housing 6, respectively, providing stable support for the housing 6.

[0038] The width and height of the threaded block 18 are equal to the width and height inside the frame 15, respectively. There are four positioning rods 19 on each side. The four positioning rods 19 on the left side are fixedly connected to the four corners of the right side wall of the threaded block 18 on the same side, and the four positioning rods 19 on the right side are fixedly connected to the four corners of the left side wall of the threaded block 18 on the same side. The width and height of the threaded block 18 are equal to the width and height inside the frame 15, which ensures the stability and reliability of the threaded block 18 inside the frame 15. The number of positioning rods 19 on each side is four, and they are fixedly connected to the four corners of the threaded block 18, which further enhances the stability and firmness of the housing 6 during installation.

[0039] In addition, the base 1, serving as the supporting structure for the entire device, is made of high-strength, corrosion-resistant materials to ensure the stability and durability of the device. The support column 2 is made of high-strength steel or alloy materials, possessing sufficient rigidity and load-bearing capacity. The fixing plate 3 is made of high-strength, heat-resistant materials to adapt to working conditions in high-temperature environments. The mounting bracket 4 is also made with strength and corrosion resistance in mind to ensure the stability and safety of the heat exchanger 5.

[0040] The working principle of the above embodiments is as follows:

[0041] During the operation of the device, the low-temperature liquid medium at the bottom of the inner side of the heat-absorbing tube 7 effectively absorbs geothermal energy from the dry hot rock strata through heat conduction. As the temperature of the low-temperature liquid medium rises, it gradually transforms into a gaseous state, carrying a large amount of heat energy. Subsequently, these gaseous media flow upward through the steam pipe 11. The heat insulation coating on the outer wall of the steam pipe 11 effectively reduces heat loss and ensures stable transmission of high-temperature steam. The steam then enters the gas transmission pipe 10 and is stably transmitted to the heat exchanger 5 through the tight fit of the external threaded connector 13 and the internal threaded connector 14. After the heat exchanger 5 transmits the heat, the steam is converted back into the low-temperature liquid medium. The low-temperature liquid medium is discharged from the drain port of the heat exchanger 5 and re-enters the heat-absorbing tube 7 through the water pipe 12, thus achieving the recycling of the low-temperature liquid medium.

[0042] When the device needs to be moved, the operator can turn the handwheel 17 to drive the threaded rod 16 to rotate within the frame 15. Since the threaded block 18 is threadedly connected to the threaded rod 16, the rotation of the threaded rod 16 will drive the threaded block 18 to move within the frame 15. As the threaded block 18 moves, the positioning rod 19 fixedly connected to it will gradually disengage from the positioning holes on the positioning blocks 20 on the left and right sides of the housing 6, thereby releasing the lock on the housing 6. Then, rotate the gas pipe 10 to disengage the connection between the internal threaded connector 14 and the external threaded connector 13, and then remove the gas pipe 10 from the heat exchanger 5. At the same time, remove the bolts to remove the mounting bracket 4 and the heat exchanger 5 from the base 1. After that, pull the unlocked housing 6 out of the mounting port of the fixing plate 3, thereby completing the disassembly of the device components, reducing the overall weight of the device, and thus facilitating the movement of the device.

Claims

1. A geothermal extraction device for dry hot rock, comprising two bases (1), two pillars (2) fixedly connected to the upper surface of the bases (1), a fixing plate (3) fixedly connected between the tops of the four pillars (2), a mounting frame (4) fixedly connected between the upper surfaces of the two bases (1), and a heat exchanger (5) fixedly connected to the inner side of the mounting frame (4), characterized in that: The fixing plate (3) has an installation opening on its inner side, and the fixing plate (3) has a heat extraction structure for geothermal extraction on its inner side of the installation opening. The heat collection structure includes a shell (6) installed inside the mounting port of the fixed plate (3), a heat absorption pipe (7) fixedly connected to the bottom shell opening of the shell (6), a sleeve (8) fixedly connected to the top shell opening of the shell (6), a rubber sealing gasket (9) fixedly connected to the inner wall of the sleeve (8), a gas transmission pipe (10) installed inside the rubber sealing gasket (9), and a steam pipe (11) fixedly connected to the bottom end of the gas transmission pipe (10). The upper surface of the fixing plate (3) is provided with a connecting component for mounting the housing (6).

2. The dry hot rock geothermal extraction device according to claim 1, characterized in that: The drain outlet of the heat exchanger (5) is connected to a water pipe (12), and the right side wall of the shell (6) is provided with a water inlet. The end of the water pipe (12) away from the heat exchanger (5) is fixedly connected to the water inlet of the shell (6).

3. The dry hot rock geothermal extraction device according to claim 1, characterized in that: The two pillars (2) on the same side are arranged sequentially along the front and rear direction of the base (1) on the same side, and the mounting bracket (4) is fixedly connected to the base (1) by bolts.

4. The dry hot rock geothermal extraction device according to claim 1, characterized in that: The heat exchanger (5) is fixedly connected to an external threaded connector (13) at the air inlet end, and the gas delivery pipe (10) is fixedly connected to an internal threaded connector (14) at the top end. The gas delivery pipe (10) is fixedly connected to the heat exchanger (5) through the external threaded connector (13) and the internal threaded connector (14).

5. The dry hot rock geothermal extraction device according to claim 1, characterized in that: The bottom of the inner side of the heat absorption tube (7) is provided with a low-temperature liquid medium, and the outer wall of the steam tube (11) is coated with a heat-insulating coating.

6. The dry hot rock geothermal extraction device according to claim 1, characterized in that: The connecting assembly includes two frames (15) fixedly connected to the upper surface of the fixed plate (3), a threaded rod (16) rotatably connected to the inner side wall of the frame (15), a handwheel (17) fixedly connected to the other end of the threaded rod (16), a threaded block (18) threadedly connected to the outside of the threaded rod (16), and a positioning rod (19) fixedly connected to the opposite side wall of the two threaded blocks (18). The left and right sides of the housing (6) are fixedly connected to positioning blocks (20), and the opposite side wall of the positioning blocks (20) on the left and right sides is provided with positioning holes that are compatible with the positioning rod (19).

7. A geothermal extraction device for dry hot rock according to claim 6, characterized in that: The two frames (15) are located on the left and right sides of the housing (6), respectively. The threaded rod (16) on the left side is rotatably connected to the inner right side wall of the frame (15) on the same side, and the threaded rod (16) on the right side is rotatably connected to the inner left side wall of the frame (15) on the same side.

8. A geothermal extraction device for dry hot rock according to claim 6, characterized in that: The width and height of the threaded block (18) are equal to the width and height inside the frame (15), and there are four positioning rods (19) on both the left and right sides. The four positioning rods (19) on the left side are fixedly connected to the four corners of the right side wall of the threaded block (18) on the same side, and the four positioning rods (19) on the right side are fixedly connected to the four corners of the left side wall of the threaded block (18) on the same side.

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