A renewable energy combined cooling heating and power device

Abstract

The application discloses a renewable energy cold-heat combined supply device, and belongs to the technical field of renewable energy application, which comprises a well wall pipe and a center pipe arranged in the well wall pipe, the outer circumferential surface of the center pipe and the inner circumferential surface of the well wall pipe are spaced apart by a distance, the top end of the well wall pipe is provided with a fixing part for fixed connection with the center pipe, the outer circumferential surface of the well wall pipe is fixedly provided with a connecting pipe one, the connecting pipe one is communicated with the well wall pipe, the end of the connecting pipe one away from the well wall pipe is provided with a water inlet pipe, the top end of the center pipe is fixedly provided with a connecting pipe two, the end of the connecting pipe two away from the center pipe is provided with a water outlet pipe, and the connecting pipe one and the connecting pipe two are respectively provided with connecting assemblies for connection with the water inlet pipe and the water outlet pipe. The application has the effect that the water inlet pipe and the water outlet pipe can be quickly connected and detached with the connecting pipe one and the connecting pipe two.

Description

Technical Field

[0001] This invention relates to the field of renewable energy applications, and in particular to a renewable energy combined cooling and heating device. Background Technology

[0002] my country is facing the largest and most severe energy challenge in the world's history, and energy issues have become a major bottleneck restricting China's rapid economic development.

[0003] Geothermal energy is natural heat energy extracted from the Earth's crust. This energy comes from the Earth's internal lava and exists in the form of heat. Heat exchange refers to the transfer of heat between two fluids, which is a unit operation in the heat transfer process. The geothermal heat exchange process is mainly completed through geothermal heat exchangers. During the heat exchange process of a geothermal well, heat transfer occurs in two different directions. First, when the temperature of the water flow inside the pipe is lower than the temperature of the rock layer outside the pipe, heat is transferred from the rock layer to the fluid. This area mainly exists in the lower part of the downward section, the horizontal section, and the lower part of the upward section of the geothermal well. Second, when the temperature of the water flow inside the pipe is higher than the temperature of the rock layer outside the pipe, heat is transferred from the fluid to the rock layer. This area mainly exists in the upper part of the downward section and the upper part of the upward section of the geothermal well.

[0004] Pipes used in geothermal heat exchange wells are usually connected by bolts. Over time, bolts can rust due to corrosion from humidity in the air. Moreover, during installation, workers need to install each bolt individually, which makes it inconvenient to install and disassemble the pipes. Summary of the Invention

[0005] In order to improve the problem of inconvenient installation and disassembly of pipes in renewable energy combined cooling and heating systems, this application provides a renewable energy combined cooling and heating system.

[0006] The renewable energy combined cooling and heating device provided in this application adopts the following technical solution:

[0007] A renewable energy combined cooling and heating device includes a well wall pipe and a central pipe disposed within the well wall pipe. The outer circumferential surface of the central pipe and the inner circumferential surface of the well wall pipe are spaced apart. A fixing member for fixed connection with the central pipe is provided at the top end of the well wall pipe. A connecting pipe one is fixed to the outer circumferential surface of the well wall pipe and is connected to the well wall pipe. A water inlet pipe is provided at the end of the connecting pipe one away from the well wall pipe. A connecting pipe two is inserted and fixed at the top end of the central pipe. A water outlet pipe is provided at the end of the connecting pipe two away from the central pipe. Connecting components for connecting to the water inlet pipe and the water outlet pipe are respectively provided on the connecting pipe one and the connecting pipe two.

[0008] By adopting the above technical solution, firstly, holes are drilled in the ground, then the well wall pipe is inserted into the holes in the ground, then the central pipe is inserted into the well wall pipe, and then the central pipe is fixedly connected to the well wall pipe by fasteners. Then, the inlet pipe and outlet pipe are fixedly connected to connecting pipe one and connecting pipe two by connecting components, which facilitates the quick connection and disassembly of the inlet pipe and outlet pipe to connecting pipe one and connecting pipe two.

[0009] Preferably, the fixing component includes a positioning ring one fixed inside the well wall pipe, the positioning ring one being located above the connecting pipe one, a positioning ring two fixed on the outer circumferential surface of the central pipe, the bottom surface of the positioning ring two being in contact with the top surface of the positioning ring one, a sealing cap being fitted on the outer circumferential surface of the central pipe, the sealing cap being rotatably connected to the central pipe, and the sealing cap being threadedly connected to the well wall pipe.

[0010] By adopting the above technical solution, when the central tube is inserted into the well wall tube, and then the sealing cover is rotated, the sealing cover drives the central tube to move downward, so that the second positioning ring overlaps the top surface of the first positioning ring, thereby fixing the central tube to the well wall tube.

[0011] Preferably, the connecting assembly includes a movable tube sleeved on the first connecting pipe, the movable tube being slidably connected to the first connecting pipe along its axial direction, a connector being fixed at one end of the inlet pipe near the first connecting pipe, the connector being inserted into the first connecting pipe, a plurality of fixing holes being formed on the outer circumferential surface of the first connecting pipe, the fixing holes penetrating the inner circumferential surface of the first connecting pipe, a fixing ball being disposed in the fixing hole, the bottom end of the fixing ball passing through the fixing hole, a fixing ring being fixed on the outer circumferential surface of the connector, and the outer circumferential surface of the fixing ball abutting against the outer circumferential surface of the connector and the side of the fixing ring near the inlet pipe.

[0012] By adopting the above technical solution, when the connector is inserted into the connecting pipe, the fixing ring pushes the fixing ball to move away from the central axis of the connector. When the fixing ring disengages from the fixing ball, the moving tube is then moved towards the water inlet pipe, so that the inner circumferential surface of the moving tube pushes the fixing ball towards the central axis of the connector, and the outer circumferential surface of the fixing ball abuts against the side of the fixing ring and the outer circumferential surface of the connector, thereby fixing the water inlet pipe and the connecting pipe.

[0013] Preferably, the inner circumferential surface of the movable tube is provided with an annular relief groove, and the fixed ball can move into the annular relief groove.

[0014] By adopting the above technical solution, an annular clearance groove is opened on the inner circumferential surface of the moving tube. When the plug is inserted into the first connecting tube, the fixing ring pushes the fixing ball to move away from the central axis of the plug, so that the fixing ball moves into the annular clearance groove, thereby facilitating the insertion of the plug into the first connecting tube.

[0015] Preferably, the inner circumferential surface of the movable pipe is provided with an annular groove, and the outer circumferential surface of the connecting pipe is fixed with a first ring and a second ring. The first ring is located in the annular groove, and the second ring is located on the side of the movable pipe near the well wall pipe. The side of the second ring can abut against the side of the movable pipe opposite to it. A first spring is sleeved on the circumference of the connecting pipe. The first spring is located in the annular groove. One end of the first spring abuts against the side of the first ring near the water inlet pipe, and the other end of the first spring abuts against the inner side of the annular groove near the water inlet pipe.

[0016] By adopting the above technical solution, when the connector is inserted into the connecting pipe, the moving pipe moves towards the water inlet pipe under the elastic force of the spring, so that the inner circumferential surface of the moving pipe abuts against the outer circumferential surface of the fixed ball, and the fixed ball fixes the connector inside the connecting pipe.

[0017] Preferably, the outer circumferential surface of the fixed ball is provided with an annular groove, the outer circumferential surface of the connecting pipe is provided with an annular recess, and a spring ring is sleeved on the outer circumferential surface of the connecting pipe, the spring ring being engaged in the annular groove and the annular recess.

[0018] By adopting the above technical solution, when the connector is inserted into the first connecting tube, the fixing ring pushes the fixing ball to move away from the central axis of the connector. When the fixing ring disengages from the fixing ball, the fixing ball moves towards the central axis of the connector under the elastic force of the spring ring, thereby fixing the connector in the first connecting tube.

[0019] Preferably, a circular block is fixed to the inner circumferential surface of the connecting pipe one, and multiple through holes are opened on the side of the circular block one. A push rod is fixed to the side of the circular block one near the water inlet pipe. A circular block two is fixed to the inner circumferential surface of the plug, and a sliding hole and multiple through holes are opened on the side of the circular block two. The central axis of the sliding hole is collinear with the central axis of the circular block two. The push rod two is slidably disposed in the sliding hole. A top block is fixed to one end of the push rod two near the push rod one. The end face of the push rod one abuts against the opposite end face of the top block. A sealing block is fixed to one end of the push rod two. The sealing block is located on the side of the circular block two away from the push rod one. The sealing block can fit against the opposite side face of the circular block two.

[0020] By adopting the above technical solution, when the connector is inserted into the connecting pipe, the push rod 2 abuts against the push rod 1, causing the push rod 2 to push the push rod 1 to move towards the water inlet pipe, causing the sealing block to disengage from the round block 2, so that the water in the water inlet pipe flows into the connecting pipe 1 through multiple through holes 2.

[0021] Preferably, a second spring is sleeved around the periphery of the second top rod, one end of the second spring abutting against the side of the top block near the second round block, and the other end of the second spring abutting against the end of the second round block near the top block.

[0022] By adopting the above technical solution, when the connector is pulled out of the connecting pipe, the top block moves away from the round block 2 under the elastic force of the spring 2, causing the top block to drive the top rod 2 to move, causing the top rod 2 to drive the sealing block to move, and causing the sealing block to block the through hole 2, thereby reducing the possibility of water spraying out from the connector when the connector is pulled out of the connecting pipe.

[0023] Preferably, a sealing ring is fixed on the top surface of the positioning ring.

[0024] By adopting the above technical solution, a sealing ring is fixed on the top surface of the positioning ring one. When the central tube is inserted into the well wall tube, the bottom surface of the positioning ring two abuts against the top surface of the sealing ring, thereby sealing the connection between the central tube and the well wall tube.

[0025] In summary, this application includes at least one of the following beneficial technical effects:

[0026] 1. First, drill holes in the ground, then insert the well wall pipe into the holes in the ground, then insert the center pipe into the well wall pipe, and then fix the center pipe to the well wall pipe with the fasteners. Then, fix the inlet pipe and outlet pipe to the connecting pipe one and connecting pipe two respectively with the connecting components, so as to facilitate quick connection and disassembly of the inlet pipe and outlet pipe to the connecting pipe one and connecting pipe two.

[0027] 2. When the connector is inserted into the connecting pipe, the fixing ring pushes the fixing ball to move away from the central axis of the connector. When the fixing ring disengages from the fixing ball, the moving pipe is then moved towards the water inlet pipe, so that the inner circumferential surface of the moving pipe pushes the fixing ball towards the central axis of the connector, so that the outer circumferential surface of the fixing ball abuts against the side of the fixing ring and the outer circumferential surface of the connector, thereby fixing the water inlet pipe to the connecting pipe.

[0028] 3. When the connector is inserted into the first connecting tube, the retaining ring pushes the retaining ball to move away from the central axis of the connector. When the retaining ring disengages from the retaining ball, the retaining ball moves towards the central axis of the connector under the elastic force of the spring ring, thereby fixing the connector in the first connecting tube. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the overall structure of the renewable energy combined cooling and heating device of this application.

[0030] Figure 2 This is a cross-sectional view of the well casing in this application.

[0031] Figure 3 This is a cross-sectional view of the connecting pipe 1 in this application.

[0032] Figure 4 This is a cross-sectional view of the moving tube in an embodiment of this application.

[0033] Figure 5 yes Figure 4 Enlarged diagram of point A in the middle.

[0034] Figure 6 This is a cross-sectional view of the connector in an embodiment of this application.

[0035] Reference numerals: 1. Well wall pipe; 11. Central pipe; 12. Positioning ring one; 13. Positioning ring two; 14. Sealing ring; 15. Sealing cap; 2. Connecting pipe one; 21. Connecting pipe two; 22. Inlet pipe; 23. Outlet pipe; 3. Connecting assembly; 31. Moving pipe; 32. Fixing hole; 33. Fixing ball; 34. Annular groove; 35. Spring ring; 36. Annular clearance groove; 37. Annular groove; 4. Annular groove; 41. Circular ring one; 42. Circular ring two; 43. Spring one; 5. Circular block one; 51. Through hole one; 52. Top rod one; 6. Plug; 61. Fixing ring; 62. Circular block two; 63. Top rod two; 64. Through hole two; 65. Sealing block; 66. Top block; 67. Spring two; 68. Sliding hole. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-6 This application will be described in further detail.

[0037] This application discloses a renewable energy combined cooling and heating device.

[0038] Reference Figure 1 and Figure 2 A renewable energy combined cooling and heating device includes a well wall pipe 1 and a central pipe 11 inserted inside the well wall pipe 1. The outer circumferential surface of the central pipe 11 and the inner circumferential surface of the well wall pipe 1 are spaced apart. A positioning ring 12 is fixed to the inner circumferential surface of the well wall pipe 1, and a sealing ring 14 is fixed to the top surface of the positioning ring 12. A second positioning ring 13 is fitted and fixed to the outer circumferential surface of the central pipe 11, with the bottom surface of the second positioning ring 13 abutting against the top surface of the sealing ring 14. A sealing cap 15 is fitted to the outer circumferential surface of the central pipe 11, rotatably connected to the central pipe 11, and threadedly connected to the well wall pipe 1.

[0039] Reference Figure 1 and Figure 2A connecting pipe 1 is fixed to the outer circumference of the well wall pipe 1. The connecting pipe 1 is located below the positioning ring 12 and is connected to the well wall pipe 1. A water inlet pipe 22 is provided at the end of the connecting pipe 1 away from the well wall pipe 1. A connecting pipe 21 is inserted and fixed at the top of the central pipe 11. A water outlet pipe 23 is provided at the end of the connecting pipe 21 away from the central pipe 11. Connecting components 3 for connecting the connecting pipe 1 and the connecting pipe 21 to the water inlet pipe 22 and the water outlet pipe 23 are respectively provided.

[0040] Reference Figure 2 and Figure 3 The connecting assembly 3 includes a movable tube 31 sleeved on the connecting pipe 2, which is slidably connected to the connecting pipe 2 along its axial direction. A connector 6 is fixed to one end of the inlet pipe 2 near the connecting pipe 2. The connector 6 is stepped and inserted into the connecting pipe 2, with its outer circumferential surface of maximum diameter fitting against the inner circumferential surface of the connecting pipe 2. Multiple fixing holes 32 are formed on the outer circumferential surface of the connecting pipe 2, penetrating its inner circumferential surface. These fixing holes are evenly spaced along the outer circumferential surface of the connecting pipe 2. A fixing ball 33 is placed within each fixing hole 32, with its bottom end passing through the fixing hole 32.

[0041] Reference Figure 3 , Figure 4 and Figure 5 The outer circumferential surface of the fixed ball 33 has an annular groove 34, and the outer circumferential surface of the connecting pipe 2 has an annular groove 37. A spring ring 35 is fitted onto the outer circumferential surface of the connecting pipe 2, and the spring ring 35 is engaged within the annular groove 37 and the annular groove 34. A fixing ring 61 is fixed to the outer circumferential surface of the plug 6, and the fixing ring 61 has a triangular cross-section. The outer circumferential surface of the fixed ball 33 abuts against the outer circumferential surface of the plug 6 and the side of the fixing ring 61 near the water inlet pipe 22.

[0042] Reference Figure 3 The inner circumferential surface of the moving tube 31 is provided with an annular clearance groove 36, into which the fixed ball 33 can move. The inner circumferential surface of the moving tube 31 is provided with an annular groove 4, and the outer circumferential surface of the connecting tube 2 is fixed with a first ring 41 and a second ring 42, with the first ring 41 located within the annular groove 4. A first spring 43 is sleeved on the circumference of the connecting tube 2, with the first spring 43 located within the annular groove 4. One end of the first spring 43 abuts against the side of the first ring 41 near the inlet pipe 22, and the other end of the first spring 43 abuts against the inner side of the annular groove 4 near the inlet pipe 22.

[0043] Reference Figure 3 and Figure 5A circular block 5 is fixed to the inner circumferential surface of the connecting pipe 2. Multiple through holes 51 are formed on the side of the circular block 5. A push rod 52 is fixed to the side of the circular block 5 near the inlet pipe 22. A circular block 62 is fixed to the inner circumferential surface of the connector 6. A sliding hole 68 and multiple through holes 64 are formed on the side of the circular block 62. The central axis of the sliding hole 68 is collinear with the central axis of the circular block 62. A push rod 63 is slidably disposed within the sliding hole 68. A sealing block 65 is fixed to one end of the push rod 63. The sealing block 65 is located on the side of the circular block 62 away from the push rod 52, and the sealing block 65 is in contact with the opposite side of the circular block 62. A top block 66 is fixed to the end of the push rod 63 near the push rod 52. The push rod 52 can push the top block 66. A spring 67 is sleeved around the periphery of the push rod 63. One end of the spring 67 abuts against the side of the push block 66 near the round block 62, and the other end of the spring 67 abuts against the end of the round block 62 near the push block 66.

[0044] The implementation principle of a renewable energy combined cooling and heating device according to an embodiment of this application is as follows: the well wall pipe 1 is inserted into a pre-drilled hole in the ground, and then the central pipe 11 is inserted into the well wall pipe 1. Then, the sealing cover 15 is rotated, so that the sealing cover 15 drives the central pipe 11 to move downward. The central pipe 11 drives the positioning ring 2 13 to move downward, so that the bottom surface of the positioning ring 2 13 abuts against the top surface of the sealing ring 14, thereby fixing the central pipe 11 and the well wall pipe 1 in place.

[0045] Next, connect the inlet pipe 22 and the outlet pipe 23 to the connecting pipe 21 and the connecting pipe 21 respectively. Move the moving pipe 31 towards the well wall pipe 1 so that the moving pipe 31 abuts against the opposite side of the annular ring 42. Move the annular clearance groove 36 to the position of the fixed ball 33. Then insert the connector 6 into the connecting pipe 2. During the movement of the connector 6, the fixed ring 61 pushes the fixed ball 33 away from the central axis of the connector 6 so that the fixed ball 33 moves into the annular clearance groove 36. When the fixed ring 61 disengages from the fixed ball 33, the fixed ball 33 moves towards the connector 6 under the elastic force of the spring ring 35 so that the outer circumferential surface of the fixed ball 33 abuts against the side of the fixed ring 61 and the outer circumferential surface of the connector 6, thereby fixing the connector 6 in the connecting pipe 2. When the connector 6 is inserted into the connecting pipe 2, the push rod 52 pushes the push block 66, causing the push block 66 to move the push rod 63 away from the well wall pipe 1. The push rod 63 then moves the sealing block 65, causing the sealing block 65 to disengage from the round block 62. This allows water in the inlet pipe 22 to pass through the through hole 51 into the connecting pipe 2, and then through the through hole 64 into the well wall pipe 1.

[0046] Next, the moving tube 31 is released, and the moving tube 31 moves away from the well wall tube 1 under the elastic force of the spring 43, so that the annular relief groove 36 moves to one side of the fixed ball 33, and the inner circumferential surface of the moving tube 31 restricts the fixed ball 33 in the fixing hole 32, thereby improving the fixing stability of the fixed ball 33 to the connector 6. When it is necessary to remove the inlet pipe 22 from the connecting pipe 1 2, move the moving pipe 31 toward the direction close to the well wall pipe 1, so that the annular relief groove 36 moves to the position of the fixed ball 33. Move the inlet pipe 22 away from the connecting pipe 1 2, so that the fixing ring 61 pushes the fixed ball 33 away from the plug 6, so that the fixed ball 33 disengages from the fixing ring 61 and moves into the annular relief groove 36, thereby facilitating the removal of the plug 6 from the connecting pipe 1 2. Connect and disconnect the outlet pipe 23 from the connecting pipe 2 21 in the same way as above, thereby facilitating the quick connection and disconnection of the inlet pipe 22 and outlet pipe 23 from the connecting pipe 1 2 and the connecting pipe 2 21.

[0047] When the well wall pipe 1 is buried underground, water from the inlet pipe 22 flows into the well wall pipe 1. In winter, the groundwater in the aquifer is warm, heating the well wall pipe 1, which in turn heats the water inside. This allows the hot water discharged from the central pipe 11 and the outlet pipe 23 to be delivered to the user. In summer, the groundwater in the aquifer is cold, cooling the well wall pipe 1, which in turn cools the water inside. This allows the cool water discharged from the central pipe 11 and the outlet pipe 23 to be delivered to the user, thus achieving combined cooling and heating (CCHP) of renewable energy.

[0048] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A renewable energy combined cooling and heating system, characterized in that: The system includes a well wall pipe (1) and a central pipe (11) disposed within the well wall pipe (1). The outer circumferential surface of the central pipe (11) and the inner circumferential surface of the well wall pipe (1) are spaced apart. A fixing member is provided at the top of the well wall pipe (1) for fixed connection with the central pipe (11). A connecting pipe (2) is fixed to the outer circumferential surface of the well wall pipe (1). The connecting pipe (2) is connected to the well wall pipe (1). A water inlet pipe (22) is provided at the end of the connecting pipe (2) away from the well wall pipe (1). A connecting pipe (21) is inserted and fixed at the top of the central pipe (11). A water outlet pipe (23) is provided at the end of the connecting pipe (21) away from the central pipe (11). The connecting pipe (2) and... Each of the two connecting pipes (21) is provided with a connecting assembly (3) for connecting to the inlet pipe (22) and the outlet pipe (23). The connecting assembly (3) includes a movable pipe (31) sleeved on the first connecting pipe (2). The movable pipe (31) is slidably connected to the first connecting pipe (2) along the axial direction of the first connecting pipe (2). A plug (6) is fixed at one end of the inlet pipe (2) near the first connecting pipe (2). The plug (6) is inserted into the first connecting pipe (2). A plurality of fixing holes (32) are opened on the outer circumferential surface of the first connecting pipe (2). The fixing holes (32) penetrate the inner circumferential surface of the first connecting pipe (2). A fixing ball (33) is provided in the fixing hole (32). The bottom end of the fixed ball (33) passes through the fixed hole (32). A fixed ring (61) is fixed on the outer circumferential surface of the plug (6). The outer circumferential surface of the fixed ball (33) abuts against the outer circumferential surface of the plug (6) and the side of the fixed ring (61) near the water inlet pipe (22). An annular relief groove (36) is opened on the inner circumferential surface of the moving pipe (31). The fixed ball (33) can move into the annular relief groove (36). An annular groove (4) is opened on the inner circumferential surface of the moving pipe (31). A circular ring (41) and a circular ring (42) are fixed on the outer circumferential surface of the connecting pipe (2). The circular ring (41) is located in the annular groove (4), and the circular ring (42) is located in the moving pipe (22). The moving pipe (31) is located near the well wall pipe (1). The second ring (42) can abut against the side opposite to the moving pipe (31). A spring (43) is sleeved on the periphery of the connecting pipe (2). The spring (43) is located in the annular groove (4). One end of the spring (43) abuts against the side of the first ring (41) near the water inlet pipe (22). The other end of the spring (43) abuts against the inner side of the annular groove (4) near the water inlet pipe (22). An annular groove (34) is opened on the outer periphery of the fixed ball (33). An annular groove (37) is opened on the outer periphery of the connecting pipe (2). A spring ring (35) is sleeved on the outer periphery of the connecting pipe (2).The spring coil (35) is fitted into the annular groove (34) and the annular recess (37). A circular block (5) is fixed on the inner circumferential surface of the connecting pipe (2). Multiple through holes (51) are provided on the side of the circular block (5). A push rod (52) is fixed on the side of the circular block (5) near the water inlet pipe (22). A circular block (62) is fixed on the inner circumferential surface of the plug (6). A sliding hole (68) and multiple through holes (64) are provided on the side of the circular block (62). The central axis of the sliding hole (68) is perpendicular to the... The central axes of the second circular block (62) are collinear. A second push rod (63) is slidably disposed within the sliding hole (68). A top block (66) is fixed to one end of the second push rod (63) near the first push rod (52). The opposite end faces of the first push rod (52) and the top block (66) abut against each other. A sealing block (65) is fixed to one end of the second push rod (63). The sealing block (65) is located on the side of the second circular block (62) away from the first push rod (52), and the sealing block (65) can fit against the opposite side of the second circular block (62).

2. A renewable energy combined cooling and heating device according to claim 1, characterized in that: The fixing component includes a positioning ring one (12) fixed inside the well wall pipe (1), the positioning ring one (12) being located above the connecting pipe one (2), a positioning ring two (13) fixed on the outer circumferential surface of the central pipe (11), the bottom surface of the positioning ring two (13) being in contact with the top surface of the positioning ring one (12), a sealing cap (15) being fitted on the outer circumferential surface of the central pipe (11), the sealing cap (15) being rotatably connected to the central pipe (11), and the sealing cap (15) being threadedly connected to the well wall pipe (1).

3. A renewable energy combined cooling and heating device according to claim 1, characterized in that: A spring (67) is sleeved around the periphery of the top rod (63). One end of the spring (67) abuts against the side of the top block (66) near the round block (62), and the other end of the spring (67) abuts against the end of the round block (62) near the top block (66).

4. A renewable energy combined cooling and heating device according to claim 2, characterized in that: A sealing ring (14) is fixed on the top surface of the positioning ring (12).

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