Renewable energy cold and heat combined supply device

Abstract

The invention discloses a renewable energy cold and heat combined supply device, and belongs to the technical field of renewable energy application, the renewable energy cold and heat combined supply device comprises a well wall pipe and a central pipe arranged in the well wall pipe, the outer circumferential surface of the central pipe and the inner circumferential surface of the well wall pipe are spaced by a distance, and the top end of the well wall pipe is provided with a fixing piece used for being fixedly connected with the central pipe; a first connecting pipe is fixed to the peripheral face of the well wall pipe and communicated with the well wall pipe, a water inlet pipe is arranged at the end, away from the well wall pipe, of the first connecting pipe, a second connecting pipe is inserted and fixed to the top end of the center pipe, and a water outlet pipe is arranged at the end, away from the center pipe, of the second connecting pipe. The first connecting pipe and the second connecting pipe are each provided with a connecting assembly used for being connected with a water inlet pipe and a water outlet pipe. The device has the effect that the water inlet pipe and the water outlet pipe can be conveniently and rapidly connected with and detached from the first connecting pipe and the second connecting pipe.

Description

Technical Field

[0001] The present invention relates to the field of renewable energy applications, and more particularly to a combined heating and cooling supply device for renewable energy. Background Art

[0002] China is facing the largest-scale and most severe challenges in the history of the world in terms of energy, and the energy issue has become a major bottleneck restricting the rapid development of China's economy.

[0003] Geothermal energy is the natural heat energy extracted from the earth's crust. This kind of energy comes from the molten rock inside the earth and exists in the form of heat. Heat transfer refers to the heat transfer between two fluids of different temperatures, and it is a unit operation belonging to the heat transfer process. The geothermal heat transfer process is mainly completed through a geothermal heat exchanger. During the heat transfer process of a geothermal well, there are two different directions of heat transfer. One is when the water temperature in the pipeline is lower than the temperature of the rock formation outside the pipeline, heat is transferred from the rock formation to the fluid, and this area mainly exists in the lower part of the descending section, the horizontal section, and the lower part of the ascending section of the geothermal well. The other is when the water temperature in the pipeline is higher than the temperature of the rock formation outside the pipeline, heat is transferred from the fluid to the rock formation, and this area mainly exists in the upper part of the descending section and the upper part of the ascending section of the geothermal well.

[0004] The pipe fittings used in geothermal heat exchange wells usually adopt the bolt connection method. Bolts will rust due to the erosion of humidity in the air during long-term use, and during installation, workers need to install bolts one by one, which is not convenient for the installation and disassembly between pipe fittings. Summary of the Invention

[0005] In order to improve the problem that it is not convenient to install and disassemble the pipe fittings in the combined heating and cooling supply device for renewable energy, the present application provides a combined heating and cooling supply device for renewable energy.

[0006] The combined heating and cooling supply device for renewable energy provided by the present application adopts the following technical solutions: A combined heating and cooling supply device for renewable energy includes a wellbore pipe and a central pipe disposed inside the wellbore pipe. There is a distance between the outer peripheral surface of the central pipe and the inner peripheral surface of the wellbore pipe. A fixing member for fixedly connecting with the central pipe is provided at the top end of the wellbore pipe. A first connecting pipe is fixed on the outer peripheral surface of the wellbore pipe, and the first connecting pipe is communicated with the wellbore pipe. A water inlet pipe is provided at one end of the first connecting pipe away from the wellbore pipe. A second connecting pipe is inserted and fixed at the top end of the central pipe, and a water outlet pipe is provided at one end of the second connecting pipe away from the central pipe. Connecting components for connecting with the water inlet pipe and the water outlet pipe are respectively provided on the first connecting pipe and the second connecting pipe.

[0007] By adopting the above technical solution, first drill a hole on the ground, then insert the wellbore pipe into the hole on the ground, then insert the central pipe into the wellbore pipe, and then fixedly connect the central pipe and the wellbore pipe through a fixing member. Then, fixedly connect the water inlet pipe and the water outlet pipe to the first connecting pipe and the second connecting pipe respectively through a connecting component, so as to facilitate the quick connection and disassembly of the water inlet pipe and the water outlet pipe with the first connecting pipe and the second connecting pipe.

[0008] Preferably, the fixing member includes a first positioning ring fixed inside the wellbore pipe. The first positioning ring is located above the first connecting pipe. A second positioning ring is fixed on the outer peripheral surface of the central pipe. The bottom surface of the second positioning ring fits against the top surface of the first positioning ring. A sealing cover is sleeved on the outer peripheral surface of the central pipe. The sealing cover is rotatably connected to the central pipe and threadedly connected to the wellbore pipe.

[0009] By adopting the above technical solution, when the central pipe is inserted into the wellbore pipe and then the sealing cover is rotated, the sealing cover drives the central pipe to move downward, so that the second positioning ring overlaps on the top surface of the first positioning ring, thereby fixedly connecting the central pipe and the wellbore pipe.

[0010] Preferably, the connecting component includes a moving pipe sleeved on the first connecting pipe. The moving pipe is slidably connected to the first connecting pipe along the axial direction of the first connecting pipe. One end of the water inlet pipe close to the first connecting pipe is fixed with a plug connector. The plug connector is inserted into the first connecting pipe. A plurality of fixing holes are formed on the outer peripheral surface of the first connecting pipe. The fixing holes penetrate the inner peripheral surface of the first connecting pipe. A fixing ball is arranged in the fixing hole. The bottom end of the fixing ball passes through the fixing hole. A fixing ring is fixed on the outer peripheral surface of the plug connector. The outer peripheral surface of the fixing ball abuts against the outer peripheral surface of the plug connector and the side surface of the fixing ring close to the water inlet pipe respectively.

[0011] By adopting the above technical solution, when the plug connector is inserted into the first connecting pipe, the fixing ring pushes the fixing ball to move in a direction away from the central axis of the plug connector. When the fixing ring disengages from the fixing ball, then move the moving pipe in a direction close to the water inlet pipe, so that the inner peripheral surface of the moving pipe pushes the fixing ball to move in a direction close to the central axis of the plug connector, and the outer peripheral surface of the fixing ball abuts against the side surface of the fixing ring and the outer peripheral surface of the plug connector, thereby fixedly connecting the water inlet pipe and the first connecting pipe.

[0012] Preferably, an annular relief groove is formed on the inner peripheral surface of the moving pipe. The fixing ball can move into the annular relief groove.

[0013] By adopting the above technical solution, an annular relief groove is formed on the inner peripheral surface of the moving pipe. When the plug connector is inserted into the first connecting pipe, the fixing ring pushes the fixing ball to move in a direction away from the central axis of the plug connector, so that the fixing ball moves into the annular relief groove, thereby facilitating the insertion of the plug connector into the first connecting pipe.

[0014] Preferably, an annular groove is formed on the inner peripheral surface of the moving pipe. A first ring and a second ring are fixed on the outer peripheral surface of the first connecting pipe. The first ring is located in the annular groove, and the second ring is located on the side of the moving pipe close to the well wall pipe. The side surface of the second ring opposite to the moving pipe can be abutted. A first spring is sleeved on the circumferential side of the first connecting pipe. The first spring is located in the annular groove. One end of the first spring abuts against the side surface of the first ring close to the water inlet pipe, and the other end of the first spring abuts against the inner side surface of the annular groove close to the water inlet pipe.

[0015] By adopting the above technical solution, when the plug is inserted into the first connecting pipe, the moving pipe moves towards the direction close to the water inlet pipe under the elastic force of the first spring, so that the inner peripheral surface of the moving pipe abuts against the outer peripheral surface of the fixed ball, and the fixed ball fixes the inserted pipe in the first connecting pipe.

[0016] Preferably, an annular circular groove is formed on the outer peripheral surface of the fixed ball. An annular embedding groove is formed on the outer peripheral surface of the first connecting pipe. A spring ring is sleeved on the outer peripheral surface of the first connecting pipe. The spring ring is clamped in the annular circular groove and the annular embedding groove.

[0017] By adopting the above technical solution, when the plug is inserted into the first connecting pipe, the fixed ring pushes the fixed ball to move towards the direction away from the central axis of the plug. When the fixed ring disengages from the fixed ball, the fixed ball moves towards the direction close to the central axis of the plug under the elastic force of the spring ring, so that the fixed ball fixes the plug in the first connecting pipe.

[0018] Preferably, a first round block is fixed on the inner peripheral surface of the first connecting pipe. A plurality of first through holes are formed on the side surface of the first round block. A first ejector rod is fixed on the side surface of the first round block close to the water inlet pipe. A second round block is fixed on the inner peripheral surface of the plug. A sliding hole and a plurality of second through holes are formed on the side surface of the second round block. The central axis of the sliding hole is collinear with the central axis of the second round block. A second ejector rod is slidably arranged in the sliding hole. A top block is fixed at one end of the second ejector rod close to the first ejector rod. The opposite end faces of the first ejector rod and the top block are abutted. A sealing block is fixed at one end of the second ejector rod. The sealing block is located on the side of the second round block away from the first ejector rod. The sealing block can be attached to the opposite side surface of the second round block.

[0019] By adopting the above technical solution, when the plug is inserted into the first connecting pipe, the second ejector rod abuts against the first ejector rod, so that the second ejector rod pushes the first ejector rod to move towards the direction close to the water inlet pipe, and the sealing block disengages from the second round block, so that the water in the water inlet pipe flows into the first connecting pipe through the plurality of second through holes.

[0020] Preferably, a second spring is sleeved on the circumferential side of the second ejector rod. One end of the second spring abuts against the side surface of the top block close to the second round block, and the other end of the second spring abuts against one end of the second round block close to the top block.

[0021] By adopting the above technical solution, when the plug connector is pulled out of the first connecting pipe, the top block moves in a direction away from the second round block under the elastic force of the second spring, so that the top block drives the second ejector rod to move, and the second ejector rod drives the sealing block to move, so that the sealing block blocks the second through hole, thereby reducing the possibility of water spraying out of the plug connector when the plug connector is pulled out of the first connecting pipe.

[0022] Preferably, a sealing ring is fixed on the top surface of the first positioning ring.

[0023] By adopting the above technical solution, a sealing ring is fixed on the top surface of the first positioning ring. When the central pipe is inserted into the well wall pipe, the bottom surface of the second positioning ring abuts against the top surface of the sealing ring, thereby sealing the connection between the central pipe and the well wall pipe.

[0024] In summary, the present application includes at least one of the following beneficial technical effects: 1. First, drill a hole on the ground, then insert the well wall pipe into the hole on the ground, then insert the central pipe into the well wall pipe, then fixedly connect the central pipe and the well wall pipe through a fixing member, and then fixedly connect the water inlet pipe and the water outlet pipe to the first connecting pipe and the second connecting pipe respectively through a connecting assembly, thereby facilitating the quick connection and disassembly of the water inlet pipe and the water outlet pipe with the first connecting pipe and the second connecting pipe; 2. When the plug connector is inserted into the first connecting pipe, the fixing ring pushes the fixing ball to move in a direction away from the central axis of the plug connector. When the fixing ring disengages from the fixing ball, then move the moving pipe in a direction close to the water inlet pipe, so that the inner circumferential surface of the moving pipe pushes the fixing ball to move in a direction close to the central axis of the plug connector, so that the outer circumferential surface of the fixing ball abuts against the side surface of the fixing ring and the outer circumferential surface of the plug connector, thereby fixedly connecting the water inlet pipe and the first connecting pipe; 3. When the plug connector is inserted into the first connecting pipe, the fixing ring pushes the fixing ball to move in a direction away from the central axis of the plug connector. When the fixing ring disengages from the fixing ball, the fixing ball moves in a direction close to the central axis of the plug connector under the elastic force of the spring coil, so that the fixing ball fixes the plug connector in the first connecting pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 is a schematic diagram of the overall structure of the renewable energy combined cooling and heating supply device of the present application.

[0026] Figure 2 is a cross-sectional view of the well wall pipe in the present application.

[0027] Figure 3It is a cross-sectional view of connecting pipe 1 in this application.

[0028] Figure 4 It is a cross-sectional view of the moving pipe in the embodiment of this application.

[0029] Figure 5 It is Figure 4 an enlarged schematic view of part A in

[0030] Figure 6 It is a cross-sectional view of the socket joint in the embodiment of this application.

[0031] Reference numerals: 1, well wall pipe; 11, central pipe; 12, positioning ring 1; 13, positioning ring 2; 14, sealing ring; 15, sealing cover; 2, connecting pipe 1; 21, connecting pipe 2; 22, water inlet pipe; 23, water outlet pipe; 3, connecting assembly; 31, moving pipe; 32, fixing hole; 33, fixing ball; 34, annular circular groove; 35, spring ring; 36, annular relief groove; 37, annular embedding groove; 4, annular groove; 41, ring 1; 42, ring 2; 43, spring 1; 5, block 1; 51, through hole 1; 52, ejector rod 1; 6, socket joint; 61, fixing ring; 62, block 2; 63, ejector rod 2; 64, through hole 2; 65, sealing block; 66, top block; 67, spring 2; 68, sliding hole. Detailed implementation manners

[0032] The following further Figures 1-6 elaborates on this application with reference to the attached drawings.

[0033] The embodiment of this application discloses a renewable energy combined cooling and heating supply device.

[0034] Referring to Figure 1 and Figure 2 , a renewable energy combined cooling and heating supply device includes a well wall pipe 1 and a central pipe 11 inserted into the well wall pipe 1. There is a distance between the outer peripheral surface of the central pipe 11 and the inner peripheral surface of the well wall pipe 1. A positioning ring 12 is fixed on the inner peripheral surface of the well wall pipe 1, and a sealing ring 14 is fixed on the top surface of the positioning ring 12. A positioning ring 13 is sleeved and fixed on the outer peripheral surface of the central pipe 11. The bottom surface of the positioning ring 13 is attached to the top surface of the sealing ring 14. A sealing cover 15 is sleeved on the outer peripheral surface of the central pipe 11. The sealing cover 15 is rotatably connected to the central pipe 11 and is threadedly connected to the well wall pipe 1.

[0035] Referring to Figure 1 and Figure 2A connecting pipe 1 2 is fixed to the outer circumference of the well wall pipe 1. The connecting pipe 1 2 is located below the positioning ring 1 12 and is connected to the well wall pipe 1. A water inlet pipe 22 is arranged at the end of the connecting pipe 1 2 away from the well wall pipe 1. A connecting pipe 2 21 is inserted and fixed at the top of the center pipe 11. A water outlet pipe 23 is arranged at the end of the connecting pipe 2 21 away from the center pipe 11. The connecting components 3 for connecting with the water inlet pipe 22 and the water outlet pipe 23 are respectively arranged on the connecting pipe 1 2 and the connecting pipe 2 21.

[0036] Reference Figure 2 and Figure 3 The connection assembly 3 includes a movable tube 31 sleeved on the connection tube 2, and the movable tube 31 is slidably connected to the connection tube 2 along the axial direction of the connection tube 2. A plug connector 6 is fixed to one end of the water inlet pipe 22 close to the connection tube 2. The plug connector 6 is a stepped type. The plug connector 6 is inserted into the connection tube 2, and the outer peripheral surface of the plug connector 6 with the largest diameter is in contact with the inner peripheral surface of the connection tube 2. A plurality of fixing holes 32 are provided on the outer peripheral surface of the connection tube 2, and the fixing holes 32 penetrate the inner peripheral surface of the connection tube 2. The plurality of fixing holes 32 are arranged at equal intervals along the outer peripheral surface of the connection tube 2. A fixing ball 33 is arranged in the fixing hole 32, and the bottom end of the fixing ball 33 passes through the fixing hole 32.

[0037] Reference Figure 3 , Figure 4 and Figure 5 The outer circumference of the fixing ball 33 is provided with an annular groove 34, the outer circumference of the connecting pipe 2 is provided with an annular groove 37, the outer circumference of the connecting pipe 2 is sleeved with a spring ring 35, and the spring ring 35 is clamped in the annular groove 37 and the annular groove 34. The outer circumference of the plug connector 6 is fixed with a fixing ring 61, and the cross section of the fixing ring 61 is triangular. The outer circumference of the fixing ball 33 is respectively in contact with the outer circumference of the plug connector 6 and the side of the fixing ring 61 close to the water inlet pipe 22.

[0038] Reference Figure 3 The inner circumference of the moving tube 31 is provided with an annular groove 36, into which the fixed ball 33 can move. The inner circumference of the moving tube 31 is provided with an annular groove 4, and the outer circumference of the connecting tube 2 is fixed with a ring 1 41 and a ring 2 42, wherein the ring 1 41 is located in the annular groove 4. The circumference of the connecting tube 2 is sleeved with a spring 1 43, which is located in the annular groove 4, one end of the spring 1 43 abuts against the side of the ring 1 41 close to the water inlet pipe 22, and the other end of the spring 1 43 abuts against the inner side of the annular groove 4 close to the water inlet pipe 22.

[0039] Reference Figure 3 and Figure 5A round block 5 is fixed to the inner circumference of the connecting pipe 2, and a plurality of through holes 51 are provided on the side of the round block 5. A push rod 52 is fixed to the side of the round block 5 close to the water inlet pipe 22. A round block 62 is fixed to the inner circumference of the plug connector 6, and a sliding hole 68 and a plurality of through holes 64 are provided on the side of the round block 62. The central axis of the sliding hole 68 is colinear with the central axis of the round block 62. A push rod 63 is slidably arranged in the sliding hole 68, and 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 round block 62 away from the push rod 52, and the sealing block 65 fits the side opposite to the round block 62. A push block 66 is fixed to the end of the push rod 63 close to the push rod 52, and the push rod 52 can push the push block 66. A spring 2 67 is sleeved around the circumference of the second push rod 63 , one end of the spring 2 67 abuts against the side surface of the push block 66 close to the second round block 62 , and the other end of the spring 2 67 abuts against one end of the second round block 62 close to the push block 66 .

[0040] The implementation principle of a renewable energy combined heat and cold supply device in an embodiment of the present application is: insert the well wall pipe 1 into a hole pre-drilled in the ground, and then insert the central pipe 11 into the well wall pipe 1, and then rotate the sealing cover 15 so that the sealing cover 15 drives the central pipe 11 to move downward, and 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 connection.

[0041] Then, the water inlet pipe 22 and the water outlet pipe 23 are connected to the connecting pipe 1 2 and the connecting pipe 2 21 respectively, and the movable pipe 31 is moved toward the direction close to the well wall pipe 1, so that the movable pipe 31 abuts against the opposite side of the circular ring 2 42, and the annular clearance groove 36 moves to the position of the fixed ball 33, and then the plug connector 6 is inserted into the connecting pipe 1 2. During the movement of the plug connector 6, the fixed ring 61 pushes the fixed ball 33 to move in the direction away from the central axis of the plug connector 6, so that the fixed ball 33 moves into the annular clearance groove 36. When the fixed ring 61 is separated from the fixed ball 33, the fixed ball 33 moves toward the direction close to the plug connector 6 under the elastic force of the spring ring 35, so that the outer peripheral surface of the fixed ball 33 abuts against the side surface of the fixed ring 61 and the outer peripheral surface of the plug connector 6, thereby fixing the plug connector 6 in the connecting pipe 1 2. When the plug connector 6 is inserted into the connecting pipe 2, the push rod 1 52 pushes the push block 66, so that the push block 66 drives the push rod 2 63 to move in the direction away from the well wall pipe 1, and the push rod 2 63 drives the sealing block 65 to move, so that the sealing block 65 is separated from the round block 2 62, thereby facilitating the water in the water inlet pipe 22 to pass through the through hole 1 51 into the connecting pipe 2, and then the water passes through the through hole 2 64 into the well wall pipe 1.

[0042] Then release the moving pipe 31. Under the elastic force of the first spring 43, the moving pipe 31 moves away from the well wall pipe 1, causing the annular relief groove 36 to move to one side of the fixed ball 33, and the inner peripheral surface of the moving pipe 31 restricts the fixed ball 33 within the fixed hole 32, thereby improving the fixing stability of the fixed ball 33 to the socket 6. When it is necessary to remove the water inlet pipe 22 from the first connecting pipe 2, move the moving pipe 31 towards the well wall pipe 1, causing the annular relief groove 36 to move to the position of the fixed ball 33. Move the water inlet pipe 22 away from the first connecting pipe 2, causing the fixing ring 61 to push the fixed ball 33 away from the socket 6, so that the fixed ball 33 moves away from the fixing ring 61 and into the annular relief groove 36, thereby facilitating the removal of the socket 6 from the first connecting pipe 2. Connect and disassemble the water outlet pipe 23 and the second connecting pipe 21 in the same way as above, so as to facilitate the quick connection and disassembly of the water inlet pipe 22 and the water outlet pipe 23 with the first connecting pipe 2 and the second connecting pipe 21.

[0043] When the well wall pipe 1 is buried underground, the water in the water inlet pipe 22 flows into the well wall pipe 1. In winter, the water in the underground aquifer is warm, heating the well wall pipe 1 with the groundwater, and the well wall pipe 1 heats the water inside it. Thus, the hot water discharged from the central pipe 11 and the water outlet pipe 23 is transported to the user end for use. In summer, the water in the underground aquifer is cold, cooling the well wall pipe 1 with the groundwater, and the well wall pipe 1 cools the water inside it. Thus, the cold water discharged from the central pipe 11 and the water outlet pipe 23 is transported to the user end for use, thereby achieving combined heat and cold supply of renewable energy.

[0044] The above are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A renewable energy combined cooling and heating device, characterized in that: The invention comprises a well wall pipe (1) and a central pipe (11) arranged in the well wall pipe (1), the outer peripheral surface of the central pipe (11) and the inner peripheral surface of the well wall pipe (1) being spaced apart by a distance, a fixing piece for being fixedly connected to the central pipe (11) being arranged at the top end of the well wall pipe (1), a connecting pipe (2) being fixed to the outer peripheral surface of the well wall pipe (1), the connecting pipe (2) being connected to the well wall pipe (1), a water inlet pipe (22) being arranged at one end of the connecting pipe (2) away from the well wall pipe (1), a connecting pipe (2) (21) being inserted and fixed at the top end of the central pipe (11), a water outlet pipe (23) being arranged at one end of the connecting pipe (2) (21) away from the central pipe (11), and a connecting assembly (3) for being connected to the water inlet pipe (22) and the water outlet pipe (23) being arranged on the connecting pipe (2) and the connecting pipe (2) respectively.

2. A renewable energy combined cooling and heating device according to claim 1, characterized in that: The fixing member comprises a positioning ring 1 (12) fixed in the well wall pipe (1), the positioning ring 1 (12) is located above the connecting pipe 1 (2), a positioning ring 2 (13) is fixed on the outer peripheral surface of the center pipe (11), the bottom surface of the positioning ring 2 (13) is in contact with the top surface of the positioning ring 1 (12), and a sealing cover (15) is sleeved on the outer peripheral surface of the center pipe (11), the sealing cover (15) is rotatably connected to the center pipe (11), and the sealing cover (15) is threadedly connected to the well wall pipe (1).

3. A renewable energy combined cooling and heating device according to claim 1, characterized in that: The connection assembly (3) comprises a movable tube (31) sleeved on the connection tube (2), the movable tube (31) being slidably connected to the connection tube (2) along the axial direction of the connection tube (2), a plug connector (6) being fixed to one end of the water inlet pipe (22) close to the connection tube (2), the plug connector (6) being inserted into the connection tube (2), a plurality of fixing holes (32) being provided on the outer circumference of the connection tube (2), the fixing holes (32) penetrating the inner circumference of the connection tube (2), a fixing ball (33) being arranged in the fixing hole (32), the bottom end of the fixing ball (33) passing through the fixing hole (32), a fixing ring (61) being fixed to the outer circumference of the plug connector (6), the outer circumference of the fixing ball (33) being respectively in contact with the outer circumference of the plug connector (6) and the side surface of the fixing ring (61) close to the water inlet pipe (22).

4. A renewable energy combined cooling and heating device according to claim 3, characterized in that: The inner circumferential surface of the movable tube (31) is provided with an annular paving groove (36), and the fixed ball (33) can move into the annular paving groove (36).

5. The renewable energy combined cooling and heating device according to claim 3, characterized in that: The inner circumference of the movable tube (31) is provided with an annular groove (4); the outer circumference of the connecting tube (2) is fixed with a circular ring (41) and a circular ring (42); the circular ring (41) is located in the annular groove (4); the circular ring (42) is located on the side of the movable tube (31) close to the well wall tube (1); the circular ring (42) and the side opposite to the movable tube (31) can be in contact; a spring (43) is sleeved on the circumference of the connecting tube (2); the spring (43) is located in the annular groove (4); one end of the spring (43) is in contact with the side of the circular ring (41) close to the water inlet pipe (22); and the other end of the spring (43) is in contact with the inner side of the annular groove (4) close to the water inlet pipe (22).

6. A renewable energy combined cooling and heating device according to claim 3, characterized in that: The outer circumference of the fixed ball (33) is provided with an annular circular groove (34), the outer circumference of the connecting pipe (2) is provided with an annular embedded groove (37), the outer circumference of the connecting pipe (2) is sleeved with a spring ring (35), and the spring ring (35) is clamped in the annular circular groove (34) and the annular embedded groove (37).

7. The renewable energy combined cooling and heating device according to claim 3, characterized in that: A round block (5) is fixed to the inner circumference of the connecting pipe (2), and a plurality of through holes (51) are provided on the side of the round block (5). A push rod (52) is fixed to the side of the round block (5) close to the water inlet pipe (22). A round block (62) is fixed to the inner circumference of the plug connector (6), and a sliding hole (68) and a plurality of through holes (64) are provided on the side of the round block (62). The central axis of the sliding hole (68) is colinear with the central axis of the round block (62). A second push rod (63) is slidably arranged in the sliding hole (68); a push block (66) is fixed to one end of the second push rod (63) close to the first push rod (52); the end faces of the first push rod (52) and the push block (66) opposite to each other are in contact; a sealing block (65) is fixed to one end of the second push rod (63); the sealing block (65) is located on a side of the second round block (62) away from the first push rod (52); and the sealing block (65) can fit the side face of the second round block (62) opposite to the first push rod (52).

8. A renewable energy combined cooling and heating device according to claim 7, characterized in that: A spring 2 (67) is sleeved on the circumferential side of the second push rod (63), one end of the second spring (67) abuts against the side surface of the second push block (66) close to the second round block (62), and the other end of the second spring (67) abuts against one end of the second round block (62) close to the push block (66).

9. The 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 first positioning ring (12).

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