Positioning mechanism for ground heat exchanger
Through the combined design of U-shaped tube structure and positioning mechanism, the problem of unstable positioning of buried heat exchange pipes is solved, and the stable fixation of buried pipes of different pipe diameters is achieved, the stability and heat exchange effect of buried pipe heat exchangers are improved, and the manufacturing cost is reduced.
Patent Information
- Application Number
- CN202422285334.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-25
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The buried heat exchange pipe lacks an effective positioning structure, resulting in poor stability and poor applicability, which affects the heat exchange effect of the buried heat exchanger.
The buried pipe with U-shaped tube structure is combined with the fixing plate, clamp, telescopic rod, fixed rod and other components. By adjusting the length of the telescopic rod and the sliding connection of the fixing rod, the stable fixation of buried pipes of different pipe diameters is achieved, and the adaptability and stability of the positioning mechanism is enhanced.
It improves the stability of the buried pipe, reduces the displacement and friction of the buried pipe, extends the service life, improves the heat exchange efficiency and adaptability of the buried pipe heat exchanger, and reduces the cost of manufacturing positioning mechanisms of different sizes.
Smart Images
Figure CN223154095U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of buried pipe heat exchangers, and specifically relates to a positioning mechanism for buried pipe heat exchangers. Background Technique
[0002] Geothermal energy is a pollution-free and renewable clean energy source, which has the advantages of large reserves, wide distribution and high energy utilization rate. A ground source heat pump uses geothermal energy (soil, groundwater, surface water, low-temperature geothermal water and tail water) as the cooling source for the heat pump in summer and the low-temperature heat source for heating in winter, and is also a system for realizing heating, cooling and domestic hot water.
[0003] Among them, the buried pipe heat exchanger is an important part that determines the overall efficiency, reliability and safety of the ground source heat pump system. It is a device that uses the characteristic that the underground soil has a relatively stable temperature to exchange heat with the soil through a pipeline system buried deep in the soil around the building.
[0004] At present, the buried heat exchange pipes are generally directly buried underground. Due to the lack of a positioning structure, the stability of the buried heat exchange pipes is poor. There are also some buried heat exchange pipes fixed and positioned by fixing parts, but most of the fixing parts adopt a fixed structure and can only be customized according to the buried heat exchange pipes, so the applicability is poor. Content of the Utility Model
[0005] The purpose of the utility model is to provide a positioning mechanism for buried pipe heat exchangers, solve the problem of poor applicability of the positioning mechanism for fixing buried heat exchange pipes with different diameters, improve the stability of the buried heat exchange pipes after fixing, and thus improve the heat exchange effect of the buried pipe heat exchanger.
[0006] The utility model realizes the above purpose through the following technical solutions:
[0007] A positioning mechanism for a buried pipe heat exchanger includes a buried pipe arranged in a foundation pit and several groups of positioning mechanisms used in cooperation with the buried pipe. The buried pipe adopts a U-shaped pipe structure and is composed of a water inlet pipeline, a water return pipeline and a connecting pipeline. The connecting pipeline is respectively communicated with the water inlet pipeline and the water return pipeline; the positioning mechanism includes a fixing plate, and a first clamping plate and a second clamping plate respectively arranged on both sides of the water inlet pipeline and the water return pipeline. The fixing plate is connected to the foundation pit. Telescopic rods are respectively arranged between the fixing plate and the first clamping plate and between the two second clamping plates. One side of the first clamping plate and the second clamping plate is respectively in contact with the water inlet pipeline or the water return pipeline; a fixing rod is also included. A plurality of through holes for the fixing rod to pass through are arranged on both the first clamping plate and the second clamping plate. One end of the fixing rod is in contact with the first clamping plate, and the other end of the fixing rod is slidably connected with a limiting block in contact with the second clamping plate.
[0008] Further, a lock block is slidably connected to the fixed rod, a wedge block is provided at the end of the limit block, a first inclined surface in contact with the wedge block is provided at the end of the lock block, and convex blocks in contact with the fixed rod are provided on both sides of the limit block.
[0009] Further, a plurality of grooves are provided on the lock block, a ball in contact with the grooves is slidably connected to the fixed rod, and a first spring is provided between the ball and the fixed rod.
[0010] Further, a setscrew is rotatably connected to the fixed rod, and the end of the screw setscrew is in contact with the ball.
[0011] Further, a second spring is provided between the limit block and the second clamping plate.
[0012] Further, the telescopic rod includes an inner tube and an outer tube slidably sleeved outside the inner tube. A protrusion is provided at the end of the outer tube, an adjusting block is threadedly connected to the inner tube, and a fourth spring is provided between the adjusting block and the protrusion.
[0013] Further, arc-shaped grooves in contact with the water inlet pipeline or the water return pipeline are provided on the first clamping plate and the second clamping plate, and the inner diameter of the arc-shaped grooves is larger than the outer diameter of the water inlet pipeline or the water return pipeline.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] 1. After the buried pipe is hoisted into the foundation pit, adjust the length of the telescopic rod between the two second clamping plates so that the two groups of first clamping plates and second clamping plates are respectively in contact with both sides of the water inlet pipeline and the water return pipeline. Then, pass the fixed rod through the through holes provided on the corresponding first clamping plate and second clamping plate in sequence until one side of the fixed rod is in contact with the first clamping plate. Then, slide the limit block on the fixed rod so that it is in contact with the second clamping plate, thereby setting the positioning mechanism on the buried pipe. At the same time, the difference in the outer diameters of different buried pipes is compensated, and the adaptability of the positioning mechanism is improved;
[0016] 2. Adjust the length of the telescopic rod between the fixed plate and the first clamping plate so that the two fixed plates are in contact with the side wall of the foundation pit. At the same time, fix the fixed plates on the side wall of the foundation pit through expansion bolts to realize the fixation of the positioning mechanism on the foundation pit. Fix the buried pipe in the foundation pit to reduce the influence of the pressure of the soil, the impact of the water flow, and the external vibration on the buried pipe, avoid the displacement of the buried pipe, thereby ensuring the normal operation of the heat exchange system, improving the stability of the buried heat exchange pipe after fixation, and further enhancing the heat exchange effect of the buried pipe heat exchanger; in addition, only when the position of the buried pipe is relatively stable can the continuous movement of the buried pipe be avoided, reducing the friction between the buried pipe and the soil, prolonging the service life of the buried pipe, and at the same time preventing the frequent change of the contact situation between the buried pipe and the soil, enabling the buried pipe to conduct accurate and efficient heat exchange with the surrounding soil, and further enhancing the heat exchange effect of the buried pipe heat exchanger; in addition, by changing the distance between the first clamping plate and the fixed plate, the difference between the excavated foundation pit and the design drawing is compensated, the adaptability of the positioning mechanism is improved, and the cost required to manufacture positioning mechanisms of different sizes is reduced. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] FIG. Figure 1 is a schematic structural view of the foundation pit of the present utility model.
[0018] FIG. Figure 2 is a schematic structural view of the telescopic rod of the present utility model.
[0019] FIG. Figure 3 is a schematic structural view of the cooperation between the first clamping plate and the second clamping plate of the present utility model.
[0020] FIG. Figure 4 is a schematic structural view of the fixed rod of the present utility model.
[0021] FIG. Figure 5 is a partial enlarged view of part A in FIG. Figure 4 of the present utility model.
[0022] FIG. Figure 6 is a schematic structural view of the convex structure of the present utility model.
[0023] Reference numerals shown in the drawings:
[0024] 1. Foundation pit; 2. Water inlet pipeline; 3. Water return pipeline; 4. Connecting pipeline; 5. Fixed plate; 6. First clamping plate; 7. Second clamping plate; 8. Telescopic rod; 9. Fixed rod; 10. Through hole; 11. Limiting block;
[0025] 12. Lock block; 13. Wedge block; 14. First inclined surface; 15. Convex block; 16. Groove; 17. Ball; 18. Set screw; 19. Second spring; 20. Third spring; 21. Second inclined surface;
[0026] 22. Inner tube; 23. Outer tube; 24. Protrusion; 25. Adjusting block; 26. Fourth spring; 27. Arc-shaped groove. Specific embodiments
[0027] The following further elaborates on the present utility model in conjunction with specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and not to limit the scope of the present utility model. In addition, it should be understood that after reading the content taught by the present utility model, those skilled in the art can make various changes or modifications to the present utility model, and these equivalent forms also fall within the scope defined by this application.
[0028] A positioning mechanism for a buried tube heat exchanger, such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4As shown in the figure, it includes a buried pipe arranged in the foundation pit 1 and several groups of positioning mechanisms used in cooperation with the buried pipe. During the construction and long-term use process, the buried pipe is fixed by the positioning mechanism, reducing the influence of soil pressure, water flow impact, and external vibration on the buried pipe, avoiding displacement of the buried pipe, thus ensuring the normal operation of the heat exchange system, improving the stability of the buried heat exchange pipe after fixation, and further enhancing the heat exchange effect of the buried pipe heat exchanger; in addition, only when the position of the buried pipe is relatively stable can the continuous movement of the buried pipe be avoided, reducing the friction between the buried pipe and the soil, extending the service life of the buried pipe, and at the same time preventing the frequent change of the contact situation between the buried pipe and the soil, enabling the buried pipe to conduct accurate and efficient heat exchange with the surrounding soil, and further enhancing the heat exchange effect of the buried pipe heat exchanger; it is characterized in that: the buried pipe adopts a U-shaped pipe structure, the buried pipe is composed of a water inlet pipeline 2, a water return pipeline 3, and a connecting pipeline 4, the connecting pipeline 4 is respectively communicated with the water inlet pipeline 2 and the water return pipeline 3, so that the circulating water flow enters the buried pipe through the water inlet, flows through the connecting pipeline 4 and then flows out from the water return pipeline 3, and at the same time, heat exchange occurs between the circulating water flow and the soil around the buried pipe; the positioning mechanism includes a fixing plate 5, and a first clamping plate 6 and a second clamping plate 7 respectively arranged on both sides of the water inlet pipeline 2 and the water return pipeline 3, the fixing plate 5 is connected to the foundation pit 1, telescopic rods 8 are respectively arranged between the fixing plate 5 and the first clamping plate 6, and between the two second clamping plates 7, one side of the first clamping plate 6 and the second clamping plate 7 is respectively in contact with the water inlet pipeline 2 or the water return pipeline 3, by changing the length of the telescopic rod 8 between the fixing plate 5 and the first clamping plate 6, the distance between the first clamping plate 6 and the fixing plate 5 is changed, thus making up for the difference between the excavated foundation pit 1 and the design drawing, improving the adaptability of the positioning mechanism, and reducing the cost required for manufacturing positioning mechanisms of different sizes; it also includes a fixing rod 9, several through holes 10 for the fixing rod 9 to pass through are arranged on both the first clamping plate 6 and the second clamping plate 7, one end of the fixing rod 9 is in contact with the first clamping plate 6, and a limiting block 11 in contact with the second clamping plate 7 is slidably connected to the other end of the fixing rod 9, by adjusting the length of the telescopic rod 8 between the two second clamping plates 7, so that the two groups of first clamping plates 6 and second clamping plates 7 are respectively in contact with both sides of the water inlet pipeline 2 and the water return pipeline 3, then the fixing rod 9 is sequentially passed through the through holes 10 arranged on the corresponding first clamping plate 6 and second clamping plate 7 until one side of the fixing rod 9 is in contact with the first clamping plate 6, and then the limiting block 11 is slid on the fixing rod 9 to make it in contact with the second clamping plate 7, thereby setting the positioning mechanism on the buried pipe, and at the same time making up for the difference in the outer diameter of different buried pipes, improving the adaptability of the positioning mechanism, and reducing the cost required for manufacturing positioning mechanisms of different sizes.
[0029] Preferably, as Figure 4 、 Figure 5 and Figure 6As shown, a locking block 12 is slidably connected to the fixed rod 9. A wedge block 13 is provided at the end of the limiting block 11. A first inclined surface 14 in contact with the wedge block 13 is provided at the end of the locking block 12. Convex blocks 15 in contact with the fixed rod 9 are provided on both sides of the limiting block 11. By sliding the locking block 12 on the fixed rod 9, the first inclined surface 14 provided at the end of the locking block 12 is brought into contact with the wedge block 13. The acting force generated after the contact first drives the limiting block 11 to move towards both sides until the convex blocks 15 provided on both sides of the limiting block 11 are in contact with the fixed rod 9. The resistance generated after the contact will limit the further movement of the limiting block 11 towards both sides. Then, the locking block 12 is further slid on the fixed rod 9. At this time, the locking block 12 will drive the limiting block 11 to move together until the limiting block 11 is in contact with the second clamping plate 7, so as to set the positioning mechanism on the buried pipe, while making up for the differences in the outer diameters of different buried pipes and improving the adaptability of the positioning mechanism.
[0030] Preferably, as Figure 4 and Figure 5 shown, a plurality of grooves 16 are provided on the locking block 12. A ball 17 in contact with the grooves 16 is slidably connected to the fixed rod 9. The resistance generated after the contact between the ball 17 and the grooves 16 will limit the sliding of the locking block 12 on the fixed rod 9, preventing the locking block 12 from being inadvertently driven to move by an external force, which affects the fixing of the buried pipe by the first clamping plate 6 and the second clamping plate 7, thereby improving the stability of the buried heat exchange pipe after fixing and further enhancing the heat exchange effect of the buried pipe heat exchanger. A first spring is provided between the ball 17 and the fixed rod 9 for the reset of the ball 17.
[0031] Preferably, as Figure 4 and Figure 5 shown, a setscrew 18 is rotatably connected to the fixed rod 9. The end of the screw setscrew 18 is in contact with the ball 17. By the contact between the setscrew 18 and the ball 17, the movement of the ball 17 on the fixed rod 9 is restricted, further restricting the sliding of the locking block 12 on the fixed rod 9, preventing the locking block 12 from being inadvertently driven to move by an external force, which affects the fixing of the buried pipe by the first clamping plate 6 and the second clamping plate 7, thereby improving the stability of the buried heat exchange pipe after fixing and further enhancing the heat exchange effect of the buried pipe heat exchanger.
[0032] Preferably, as Figure 4 and Figure 5As shown, a second spring 19 is provided between the limit block 11 and the second clamping plate 7. By adjusting the position of the limit block 11, the second spring 19 is pre-compressed. The resilience generated after the compression of the second spring 19 will be applied to the buried pipe through the first clamping plate 6 and the second clamping plate 7, and increase the friction between the first clamping plate 6 and the second clamping plate 7, thereby improving the stability of the buried heat exchange pipe after fixation, and further enhancing the heat exchange effect of the buried pipe heat exchanger; at the same time, it makes up for the processing differences in the outer diameter of the buried pipe and improves the adaptability of the positioning mechanism; in addition, the prefabricated force of the second spring 19 on the buried pipe can offset part of the external force applied to the buried pipe, avoiding the shaking of the buried pipe from affecting the heat exchange effect of the buried pipe heat exchanger.
[0033] Preferably, as Figure 4 and Figure 5 shown, a third spring 20 is provided between two adjacent limit blocks 11. Second inclined surfaces 21 in contact with the first clamping plate 6 or the second clamping plate 7 are provided on both sides of the limit block 11, so that the limit block 11 can retract into the fixing rod 9, facilitating the fixing rod 9 to pass through the through holes 10 provided on the first clamping plate 6 and the second clamping plate 7, and improving the installation efficiency of the positioning mechanism.
[0034] Preferably, as Figure 2 and Figure 3 shown, the telescopic rod 8 includes an inner tube 22 and an outer tube 23 slidably sleeved outside the inner tube 22. Specifically, the inner tube 22 and the outer tube 23 of the middle telescopic tube are respectively connected to the two second clamping plates 7, and the inner tube 22 and the outer tube 23 of the telescopic tubes on both sides are respectively connected to the first clamping plate 6 and the fixing plate 5; a protrusion 24 is provided at the end of the outer tube 23, and an adjusting block 25 is threadedly connected to the inner tube 22. A fourth spring 26 is provided between the adjusting block 25 and the protrusion 24. By rotating the adjusting block 25 on the inner tube 22, it moves on the inner tube 22 and compresses the fourth spring 26 provided between the adjusting block 25 and the protrusion 24. By pre-compressing the fourth spring 26, a prefabricated force is generated. The prefabricated force acts on the buried pipe and the fixing plate 5 through the telescopic rod 8, the first clamping plate 6 and the second clamping plate 7 respectively, so that the positioning mechanism is in a tight state as a whole, offsetting part of the external force applied to the buried pipe, avoiding the loosening of the positioning mechanism caused by the external force, improving the stability of the buried heat exchange pipe after fixation, and thus enhancing the heat exchange effect of the buried pipe heat exchanger.
[0035] Preferably, as Figure 2 and Figure 3 shown, arc-shaped grooves 27 in contact with the water inlet pipeline 2 or the water return pipeline 3 are provided on the first clamping plate 6 and the second clamping plate 7. The inner diameter of the arc-shaped grooves 27 is larger than the outer diameter of the water inlet pipeline 2 or the water return pipeline 3, so that the first clamping plate 6 and the second clamping plate 7 can adapt to buried pipes with different outer diameters, improving the adaptability of the positioning mechanism and reducing the cost required to manufacture positioning mechanisms of different sizes.
[0036] Embodiment 1
[0037] The utility model provides a positioning mechanism for a buried pipe heat exchanger. As shown in Figures 1-4 , a foundation pit 1 is dug in the corresponding land in advance, and a number of expansion bolts are driven into the side wall of the foundation pit 1. After the buried pipe is hoisted into the foundation pit 1, the length of the telescopic rod 8 between the two second clamping plates 7 is adjusted, so that the two groups of first clamping plates 6 and second clamping plates 7 are respectively in contact with both sides of the water inlet pipeline 2 and the water return pipeline 3. Then, the fixing rod 9 is sequentially passed through the through holes 10 provided on the corresponding first clamping plate 6 and second clamping plate 7 until one side of the fixing rod 9 is in contact with the first clamping plate 6. Then, the limiting block 11 is slid on the fixing rod 9 to make it in contact with the second clamping plate 7, so as to set the positioning mechanism on the buried pipe, while making up for the difference in the outer diameters of different buried pipes and improving the adaptability of the positioning mechanism. Then, the length of the telescopic rod 8 between the fixing plate 5 and the first clamping plate 6 is adjusted, so that the two fixing plates 5 are in contact with the side wall of the foundation pit 1, and at the same time, the fixing plate 5 is fixed on the side wall of the foundation pit 1 through the expansion bolts, so as to realize the fixation of the positioning mechanism on the foundation pit 1, fix the buried pipe in the foundation pit 1, reduce the influence of the buried pipe by the pressure of the soil, the impact of the water flow and the external vibration, etc., avoid the displacement of the buried pipe, so as to ensure the normal operation of the heat exchange system, improve the stability of the buried heat exchange pipe after fixation, and further improve the heat exchange effect of the buried pipe heat exchanger. In addition, only when the position of the buried pipe is relatively stable can the continuous movement of the buried pipe be avoided, the friction between the buried pipe and the land be reduced, the service life of the buried pipe be extended, and at the same time, the frequent change of the contact situation between the buried pipe and the soil can be prevented, so that the buried pipe can accurately and efficiently exchange heat with the surrounding soil, and further improve the heat exchange effect of the buried pipe heat exchanger. In addition, by changing the distance between the first clamping plate 6 and the fixing plate 5, the difference between the dug foundation pit 1 and the design drawing is made up, the adaptability of the positioning mechanism is improved, and the cost required to manufacture positioning mechanisms of different sizes is reduced.
[0038] Embodiment 2
[0039] On the basis of Example 1, as shown in Figure 4 , Figure 5 and Figure 6 , when the positioning mechanism needs to be fixed on the buried pipe, the corresponding fixing rod 9 is passed through the through hole 10 provided on the first clamping plate 6 or the second clamping plate 7. At the same time, the limiting block 11 is slightly pressed, so that the second inclined surface 21 provided on the limiting block 11 is in contact with the first clamping plate 6 or the second clamping plate 7. The acting force generated after the contact will drive the limiting block 11 to move inward and compress the second spring 19, so that the fixing rod 9 can smoothly pass through the first clamping plate 6 or the second clamping plate 7. Then, the second spring 19 is sleeved on the end of the fixing rod 9, and at the same time, the limiting block 11 is pressed, so that the second spring 19 is located between the limiting block 11 and the second clamping plate 7 through the limiting block 11.
[0040] Then, an acting force greater than the restoring force of the third spring 20 is applied to the lock block 12. Through the component force generated after the ball 17 contacts the groove 16, the ball 17 is driven to move outward, and the third spring 20 is compressed, so that the lock block 12 can move smoothly on the fixed rod 9. When it moves to the next groove 16, under the action of the restoring force of the third spring 20, the ball 17 will be reset to contact the groove 16; by repeating the above actions until the first inclined surface 14 provided at the end of the lock block 12 contacts the wedge block 13, the acting force generated after the contact first drives the limit block 11 to move to both sides, so that the protrusions 15 provided on both sides of the limit block 11 contact the fixed rod 9. The resistance generated after the contact will limit the further movement of the limit block 11 to both sides. Then, the lock block 12 is further slid on the fixed rod 9. At this time, the lock block 12 will drive the limit block 11 to move together and compress the second spring 19 provided between the limit block 11 and the second clamping plate 7. The restoring force generated after the compression of the second spring 19 is applied to the buried pipe through the first clamping plate 6 and the second clamping plate 7, and the friction between the first clamping plate 6 and the second clamping plate 7 is increased. When the friction is sufficient to firmly fix the positioning mechanism on the buried pipe, the lock block 12 is further pushed, so that the ball 17 corresponds to the next groove 16 of the lock block 12. Then, the acting force applied to the lock block 12 is withdrawn. By tightening the setscrew 18 on the fixed rod 9, the setscrew 18 contacts the ball 17. The resistance generated after the contact will limit the sliding of the ball 17 on the fixed rod 9. Combining with the resistance generated after the ball 17 contacts the groove 16, the movement of the lock block 12 on the fixed rod 9 will be limited, so as to set the positioning mechanism on the buried pipe, while compensating for the processing differences in the outer diameter of the buried pipe and improving the adaptability of the positioning mechanism. In addition, the acting force prefabricated by the second spring 19 on the buried pipe can offset part of the external acting force applied to the buried pipe, avoiding the shaking of the buried pipe from affecting the heat exchange effect of the buried pipe heat exchanger.
[0041] Example 3
[0042] On the basis of Example 1, as Figure 2 and Figure 3 shown, by rotating the adjusting block 25 on the inner pipe 22, it moves on the inner pipe 22 and compresses the fourth spring 26 provided between the adjusting block 25 and the protrusion 24. By pre-compressing the fourth spring 26 in advance, a prefabricated force is generated. The prefabricated force acts on the buried pipe and the fixing plate 5 through the telescopic rod 8, the first clamping plate 6 and the second clamping plate 7 respectively, so that the whole positioning mechanism is in a tense state, offsetting part of the external acting force applied to the buried pipe, avoiding the loosening of the positioning mechanism caused by the external acting force, improving the stability of the buried heat exchange pipe after fixation, and thus enhancing the heat exchange effect of the buried pipe heat exchanger.
Claims
1. A positioning mechanism for a buried pipe heat exchanger, comprising a buried pipe disposed in a foundation pit (1) and several groups of positioning mechanisms used in cooperation with the buried pipe, characterized in that: The buried pipe adopts a U-shaped pipe structure. The buried pipe is composed of a water inlet pipeline (2), a water return pipeline (3) and a connecting pipeline (4). The connecting pipeline (4) is respectively communicated with the water inlet pipeline (2) and the water return pipeline (3). The positioning mechanism includes a fixing plate (5), a first clamping plate (6) and a second clamping plate (7) respectively arranged on both sides of the water inlet pipeline (2) and the water return pipeline (3). The fixing plate (5) is connected to the foundation pit (1). Telescopic rods (8) are respectively arranged between the fixing plate (5) and the first clamping plate (6) and between the two second clamping plates (7). One side of the first clamping plate (6) and the second clamping plate (7) is respectively in contact with the water inlet pipeline (2) or the water return pipeline (3). It also includes a fixing rod (9). A number of through holes (10) for the fixing rod (9) to pass through are arranged on both the first clamping plate (6) and the second clamping plate (7). One end of the fixing rod (9) is in contact with the first clamping plate (6), and a limiting block (11) in contact with the second clamping plate (7) is slidably connected to the other end of the fixing rod (9).
2. The positioning mechanism of the buried tube heat exchanger according to claim 1, characterized in that: A locking block (12) is slidably connected to the fixing rod (9). A wedge-shaped block (13) is arranged at the end of the limiting block (11). A first inclined surface (14) in contact with the wedge-shaped block (13) is arranged at the end of the locking block (12). Convex blocks (15) in contact with the fixing rod (9) are arranged on both sides of the limiting block (11).
3. The positioning mechanism of the buried tube heat exchanger according to claim 2, wherein: A number of grooves (16) are arranged on the locking block (12). A ball (17) in contact with the grooves (16) is slidably connected to the fixing rod (9). A first spring is arranged between the ball (17) and the fixing rod (9).
4. The positioning mechanism of a buried tube heat exchanger according to claim 1, characterized in that: A setscrew (18) is rotatably connected to the fixing rod (9). The end of the setscrew (18) is in contact with the ball (17).
5. The positioning mechanism of the buried tube heat exchanger according to claim 1, characterized in that: A second spring (19) is arranged between the limiting block (11) and the second clamping plate (7).
6. The positioning mechanism of the buried tube heat exchanger according to claim 1, characterized in that: A third spring (20) is arranged between two adjacent limiting blocks (11). Second inclined surfaces (21) in contact with the first clamping plate (6) or the second clamping plate (7) are arranged on both sides of the limiting block (11).
7. The positioning mechanism of the buried tube heat exchanger according to claim 1, characterized in that: The telescopic rod (8) includes an inner tube (22) and an outer tube (23) slidably sleeved outside the inner tube (22). A protrusion (24) is arranged at the end of the outer tube (23). An adjusting block (25) is threadedly connected to the inner tube (22). A fourth spring (26) is arranged between the adjusting block (25) and the protrusion (24).
8. The positioning mechanism of a buried tube heat exchanger according to claim 1, characterized in that: Arc-shaped grooves (27) in contact with the water inlet pipeline (2) or the water return pipeline (3) are arranged on the first clamping plate (6) and the second clamping plate (7). The inner diameter of the arc-shaped groove (27) is larger than the outer diameter of the water inlet pipeline (2) or the water return pipeline (3).