Pipe fixing device for ground source heat pump

Abstract

The utility model discloses a kind of pipe fixing device for ground source heat pump, belong to ground source heat pump system installation technical field.It solves the technical problem that existing ground source heat pump horizontal buried pipe multiple heat exchange pipes are dislocated by soil impact and affect heat exchange efficiency problem.Technical scheme main points are as follows:including clamping ring and installation pipe, three adjusting holes are evenly arranged in the circumferential of clamping ring side wall, three-point clamping structure is formed by the horizontal fixed pipe and adjusting rod outside each hole, connecting block is arranged between the two fixed pipes of outer side wall, and the outer circumferential of connecting block is sleeved with the limiting cylinder of the same height as the axis of fixed pipe;One end of installation pipe is connected with connecting block ball, and the other end inner wall is screwed with the outer wall thread of fixed pipe, and is positioned by limiting cylinder inserted into installation pipe groove.The main purpose is to fix the heat exchange pipe of ground source heat pump system, ensure that adjacent pipe is parallel equidistant when multiple pipe, improve heat exchange efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of installation technology of ground source heat pump system, and specifically relates to a pipe fixing device for ground source heat pump. Background Technology

[0002] Ground source heat pump systems utilize the principle of heat pumps, circulating fluid through closed underground pipes (PE heat exchange coils) to achieve heat exchange between the system and the earth. This leverages the renewable heat energy in the earth's soil and rock layers, representing a sustainable and energy-efficient building technology. Existing ground source heat pump systems mainly include buried pipe heat pump systems, groundwater heat pump systems, and surface water heat pump systems. Buried pipe heat pump systems come in two forms: horizontal and vertical. The pipes within the buried system primarily exchange heat with the soil beneath the surface; therefore, these pipes can also be referred to as heat exchange pipes. Horizontal buried pipes refer to multiple heat exchange pipes arranged parallel and at equal intervals. This method of burying pipes results in a more uniform distribution of heat exchange pipes, leading to better heat exchange efficiency. The existing technical solutions mentioned above have the following drawbacks: during actual landfilling, multiple equidistant parallel heat exchange tubes are prone to misalignment after being impacted by the soil, which disrupts the arrangement of the heat exchange tubes and thus affects the heat exchange efficiency of the heat exchange tubes. Therefore, it is very important to fix the multiple arranged heat exchange tubes before landfilling. Utility Model Content

[0003] One objective of this invention is to provide a pipe fixing device for a ground source heat pump, which can prevent multiple equidistant parallel heat exchange pipes from becoming misaligned after being impacted by the soil.

[0004] To achieve these and other advantages according to the present invention, a pipe fixing device for a ground source heat pump is provided, comprising:

[0005] A clamping ring has three equal-height adjustment holes evenly distributed along its circumference on its side wall. A horizontal fixing tube of the same diameter as the adjustment holes is provided on the outer side wall of the clamping ring. A horizontal adjustment rod is inserted into the fixing tube and its corresponding adjustment hole. A connecting block is also provided on the outer side wall of the clamping ring between two of the fixing tubes. A limiting cylinder is horizontally fitted around the outer circumference of the connecting block. The axis of the limiting cylinder is at the same height as the axis of the fixing tube.

[0006] The mounting tube has one end sealed and is provided with an annular limiting groove that matches the limiting cylinder. The sealed end of the mounting tube is ball-jointed with the connecting block. The inner diameter of the mounting tube is larger than the outer diameter of the fixing tube. The inner wall of the mounting tube is provided with an internal thread, and the outer wall of the fixing tube is provided with an external thread that matches the internal thread.

[0007] Preferably, in the pipe fixing device for the ground source heat pump, the sealing end of the installation pipe is provided with a hinge ball, and the free end of the connecting block is provided with a hinge groove that matches the hinge ball.

[0008] Preferably, in the pipe fixing device for the ground source heat pump, the adjusting rod is inserted into its corresponding fixing cylinder through a threaded structure, and a non-circular auxiliary rotation groove is provided at the end of the adjusting rod away from the central axis of the clamping ring.

[0009] Preferably, in the pipe fixing device for the ground source heat pump, an adjusting spring coaxial with the adjusting rod is provided at one end near the central axis of the clamping ring, and a protective plate is provided at the free end of the adjusting spring.

[0010] Preferably, in the pipe fixing device for the ground source heat pump, the side of the protective plate close to the heat exchange tube is provided with an anti-slip pad.

[0011] Preferably, in the pipe fixing device for the ground source heat pump, the clamping ring has a T-shaped groove extending circumferentially on its side wall, a sliding plate is slidably disposed in the groove, the connecting block passes through the groove opening and connects to the sliding plate, the side wall of the groove away from the clamping ring has a plurality of first positioning holes arranged along its length, the sliding plate has a second positioning hole at the same height as the first positioning hole, and a positioning rod is inserted into the second positioning hole and one of the first positioning holes.

[0012] Preferably, in the pipe fixing device for the ground source heat pump, the positioning rod is movably inserted into the corresponding first positioning hole and second positioning hole through a threaded structure.

[0013] This utility model has at least the following beneficial effects:

[0014] In this invention, the clamping ring has three evenly spaced adjustment holes on its sidewall. Each hole is fitted with a horizontal fixing tube and an adjustment rod, forming a three-point clamping structure. Moving the adjustment rod allows the ends of the three rods to apply a uniform radial clamping force to the heat exchange tube, resisting lateral impact from the soil, suppressing pipe offset and tilting, and preventing misalignment. The connecting block on the outside of the clamping ring is located between two fixed tubes. The axis of its outer peripheral limiting cylinder is at the same height as the fixed tube. One end of the mounting tube is connected to the connecting block through a rotatable structure, and the inner thread of the other end is screwed into the outer thread of the fixed tube. When multiple tubes are fixed parallel to each other on the same plane, the limiting cylinder is inserted into the groove of the mounting tube for positioning, ensuring that the connecting axes of adjacent devices are aligned. Then, a rigid connection is formed by screwing the threads, keeping the multiple tubes parallel and equidistant on the same plane. This structure, through three-point uniform clamping and precise positioning of the limiting cylinder, mounting tube, and fixed tube connection, effectively prevents heat exchange tube misalignment, maintains the parallel spacing of multiple tubes, ensures heat exchange efficiency, and can adapt to different tube diameters, facilitating disassembly and reuse.

[0015] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0016] Figure 1 This is a top view of the pipe fixing device for a ground source heat pump according to one of the technical solutions of this utility model.

[0017] Figure 2 This is a schematic diagram of the connection relationship between the connecting block and the slide groove in one of the technical solutions of this utility model;

[0018] Among them, 1-clamping ring, 2-protective plate, 3-adjusting spring, 4-adjusting rod, 5-fixing tube, 6-limiting cylinder, 7-connecting block, 8-hinged ball, 9-installation tube, 10-positioning rod, 12-slide groove, 13-first positioning hole, 14-slide plate. Detailed Implementation

[0019] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0020] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. The terms "lateral," "longitudinal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] like Figure 1 , Figure 2 As shown, this utility model provides a pipe fixing device for a ground source heat pump, comprising:

[0023] The clamping ring 1 has three equal-height adjustment holes evenly distributed along its circumference on its side wall. A horizontal fixing tube 5 of the same diameter corresponding to the adjustment holes is provided on the outer side wall of the clamping ring 1. A horizontal adjustment rod 4 is inserted into the fixing tube 5 and its corresponding adjustment hole. A connecting block 7 is also provided on the outer side wall of the clamping ring 1 between two of the fixing tubes 5. A limiting cylinder 6 is horizontally fitted around the outer circumference of the connecting block 7. The axis of the limiting cylinder 6 is at the same height as the axis of the fixing tube 5.

[0024] The mounting tube 9 has one end sealed and is provided with an annular limiting groove that matches the limiting cylinder 6. The sealed end of the mounting tube 9 is ball-jointed with the connecting block 7. The inner diameter of the mounting tube 9 is larger than the outer diameter of the fixing tube 5. The inner wall of the mounting tube 9 is provided with an internal thread, and the outer wall of the fixing tube 5 is provided with an external thread that matches the internal thread.

[0025] In this technical solution, the clamping ring 1 is a circular basic support structure with three equal-height adjustment holes (the centers of the holes are located on the same horizontal plane) evenly distributed along its sidewall for installing the fixing tube 5 and the adjustment rod 4. The central axis of the clamping ring 1 coincides with the axis of the heat exchange tube, and the adjustment rod 4 achieves a ring-like fixation of the heat exchange tube by moving radially within the clamping ring. The fixing tube 5 is a tubular component horizontally fixed to the outer wall of the clamping ring 1, coaxial with the adjustment holes and of the same diameter. Its inner wall can be machined with internal threads (to mate with the external threads of the adjustment rod 4) or kept smooth (for the adjustment rod 4 to slide). Its function is to provide a moving guide path for the adjustment rod 4 and to serve as a connection interface for the installation tube 9. The adjustment rod 4 is a rod that passes through the fixing tube 5 and the adjustment holes. One end (inner end) is connected to the protective plate 2 through the adjusting spring 3, and the other end (outer end) is provided with a non-circular auxiliary rotation groove (such as a hexagonal groove). By rotating the adjustment rod 4, it can be moved along the axis of the fixing tube 5 to achieve clamping or loosening of the heat exchange tube. The connecting block 7 is a block-shaped structure movably mounted on the outer wall of the clamping ring 1, located between two fixed tubes 5, and can be fixed in a certain position by a fixing structure. The free end of the connecting block 7 has a hinge groove, forming a ball-joint with the hinge ball 8 of the mounting tube 9, allowing the mounting tube 9 to rotate within a certain three-dimensional space. The limiting cylinder 6 is a cylindrical component sleeved around the outer periphery of the connecting block 7, with its axis at the same height as the axis of the fixed tube 5, and its position and size matching the annular limiting groove at the sealed end of the mounting tube 9. After the limiting cylinder 6 is inserted into the limiting groove, it can restrict the radial sway of the mounting tube 9 and assist in aligning the axes of adjacent devices. The mounting tube 9 is a tubular component sealed at one end, with the sealed end ball-jointed to the connecting block 7 via the hinge ball 8. The other end has an internal thread on its inner wall (which mates with the external thread of the fixed tube 5). The inner diameter is larger than the outer diameter of the fixed tube 5 to ensure that the axes of the two coincide when the threads are engaged. The limiting groove is used for positioning in conjunction with the limiting cylinder 6.

[0026] The working principle of the clamping structure in this technical solution is as follows: The three adjusting rods 4 of the clamping ring 1 are evenly distributed 120° around the circumference, forming a three-point clamping structure. After the heat exchange tube is inserted into the center of the clamping ring 1, the adjusting rod 4 is rotated by inserting a screwdriver or wrench into the non-circular groove at the outer end of the adjusting rod 4, driving the adjusting rod 4 to move towards the center. The adjusting spring 3 at the inner end of the adjusting rod 4 is compressed to generate elastic force, pushing the protective plate 2 to fit against the outer wall of the heat exchange tube. The buffering effect of the spring avoids rigid compression damage to the pipe. For heat exchange tubes of different diameters (such as φ25mm and φ40mm), simply rotate the adjusting rod 4 in the opposite direction to adjust the extension length, so that the three protective plates 2 evenly contact the pipe, forming an adaptive clamping. Since the adjusting holes are at the same height and the adjusting rod 4 moves horizontally, the clamping force is evenly distributed around the circumference of the pipe, which can effectively suppress the radial displacement and tilting of the pipe.

[0027] The connection between devices in this technical solution is achieved as follows: When multiple parallel heat exchange tubes need to be fixed, they are connected to the fixing tubes 5 of adjacent devices via the mounting tube 9. The specific process is as follows:

[0028] The mounting tube 9 is ball-hinged to the connecting block 7 via the hinge ball 8, allowing it to rotate within a certain range. The mounting tube 9 is rotated until it aligns with the axis of the fixed tube 5 of the adjacent device. The fixed tube 5 is then inserted into the mounting tube 9, and the mounting tube 9 is rotated until its inner thread engages with the outer thread of the fixed tube 5 (with consistent pitch and an engagement length ≥ 2 / 3 of the exposed length of the fixed tube 5), forming a rigid connection. At this point, two adjacent clamping rings 1 are connected as a single unit through the "mounting tube 9 - fixed tube 5" combination, ensuring that the clamped heat exchange tubes remain parallel and equidistant. Even at undulating terrain or pipe bends, adjusting the angle via the ball hinge ensures that the spacing error between adjacent heat exchange tubes is ≤ ±5mm, avoiding the chaotic pipe layout caused by connection errors in traditional fixing methods.

[0029] Push the limiting cylinder 6 on the connecting block 7 so that it inserts into the annular limiting groove at the sealing end of the installation tube 9. The fitting accuracy between the limiting cylinder 6 and the limiting groove is H7 / g6, ensuring that the axial deviation between the two is ≤±1mm, thus limiting the shaking of the installation tube 9. If multiple fixing devices are installed along the length of each heat exchange tube, this operation can ensure that each heat exchange tube remains parallel and equidistant, and on the same plane. When the limiting cylinder 6 is not used, it completely fits around the outer circumference of the connecting block 7, exposing the ball joint and thus not affecting the flexible rotation at the joint. The use of the limiting cylinder 6 can be flexibly adjusted according to specific construction requirements to determine whether it is inserted into the limiting groove.

[0030] The working process of this technical solution:

[0031] Single device clamping: Insert the heat exchange tube into the clamping ring 1 → rotate the three adjusting rods 4 to clamp the pipe → complete the single pipe fixing.

[0032] Multiple device connection: Align the mounting tube 9 of one device with the fixing tube 5 of the adjacent device through a ball joint → Rotate the mounting tube 9 to connect the fixing tube 5 with a threaded connection → Push the limiting cylinder 6 into the limiting groove for positioning → Repeat the operation to form a multi-tube fixed array.

[0033] This technical solution includes at least the following beneficial effects:

[0034] The three adjusting rods 4 form a stable triangular support structure, and the clamping force is evenly distributed along the circumference of the pipe, which can effectively prevent misalignment caused by soil impact and ensure the arrangement of heat exchange tubes.

[0035] The threaded connection between the mounting pipe 9 and the fixing pipe 5 provides axial tensile strength (≥50N), and the fit between the limiting cylinder 6 and the limiting groove restricts radial sway, ensuring a constant distance between adjacent pipes (if the design distance is 300mm, the actual error is ≤±3mm), and maintaining a uniform distribution of horizontal buried pipes.

[0036] The ball joint allows the device to rotate within a certain range, adapting to pipeline routes in different terrains and avoiding stress concentration caused by rigid connections. Multiple devices are connected as a whole through the "clamping ring 1-connecting assembly" to form a rigid structure similar to a truss, which together resists soil pressure and greatly reduces the risk of displacement of a single pipeline due to uneven stress.

[0037] By using three-point clamping and rigid connection, the positional deviation of the heat exchange tubes during the landfill process is reduced by more than 80% compared with the traditional binding method, ensuring the parallelism and spacing accuracy of multiple tubes and maintaining high efficiency in heat and cold exchange.

[0038] Adjustment and connection can be completed without complicated tools, resulting in high installation efficiency. It is also reusable and can be disassembled. The structural design balances flexibility (ball joint, sliding groove adjustment) and stability (threaded fastening, limit fit), making it suitable for fixing ground source heat pump pipelines under various geological conditions.

[0039] This technical solution breaks through the limitations of existing technologies from two dimensions: "single-point clamping → multi-point uniform fixing" and "flexible connection → rigid positioning". It effectively solves the misalignment problem during the burial of heat exchange tubes and provides reliable mechanical support for the stable operation of ground source heat pump systems.

[0040] In another technical solution, such as Figure 1 , Figure 2 As shown, in the pipe fixing device for the ground source heat pump, the sealing end of the mounting pipe 9 is provided with a hinge ball 8, and the free end of the connecting block 7 is provided with a hinge groove that matches the hinge ball 8.

[0041] In this technical solution, the hinge ball 8 is a spherical connector at the sealing end of the mounting tube 9. The spherical surface fits against the inner wall of the hinge groove of the connecting block 7, forming a rotatable spherical hinge structure. The hinge groove is located at the free end of the connecting block 7, and a limiting ring is provided at the groove opening. The inner wall of the limiting ring is an arc surface adapted to the hinge ball 8, and the depth is greater than 1.2 times the radius of the hinge ball 8, ensuring that the hinge ball 8 can rotate within the groove but does not come out. The limiting ring is an annular structure extending inward from the opening of the hinge groove. Its inner diameter is larger than the cross-sectional size of the connecting rod (e.g., when the diameter of the connecting rod is 6mm, the inner diameter of the limiting ring is 12mm), but smaller than the diameter of the hinge ball 8. It is used to limit the range of the hinge ball 8 from coming out, while allowing the connecting rod to swing within the ring.

[0042] In this technical solution, the articulated ball 8 and the mounting tube 9 can be connected in two ways: one is integral molding, which is suitable for plastic materials, and the articulated ball 8 and the sealing end of the mounting tube 9 are made into a whole through injection molding process; the other is a split connection, in metal materials, the connecting rod is welded or threaded together, one end of the connecting rod is fixed to the mounting tube 9, and the other end is connected to the articulated ball 8. Its cross-sectional dimension is smaller than the inner diameter of the limiting ring to ensure flexible swing.

[0043] The hinge groove of the connecting block 7 is machined, and the groove depth is designed according to the size of the hinge ball 8 (e.g., when the diameter of the hinge ball 8 is 20mm, the groove depth is 12-15mm). The thickness of the limiting ring is 2-3mm, and the edges are rounded to reduce stress concentration. The spherical fit clearance between the hinge ball 8 and the hinge groove is controlled at 0.1-0.3mm to ensure smooth rotation without significant looseness.

[0044] This technical solution solves the problem of difficult angle adjustment in traditional rigid connections, allowing the installation pipe 9 to be flexibly adjusted in complex terrain or pipe bends (such as keeping the pipe parallel in sloping terrain), ensuring the stability of multi-pipe layout, reducing the risk of misalignment during burial, and is suitable for the complex installation requirements of ground source heat pump pipelines.

[0045] In another technical solution, in the pipe fixing device for the ground source heat pump, the adjusting rod is inserted into its corresponding fixing pipe through a threaded structure, and a non-circular auxiliary rotation groove is provided at the end of the adjusting rod away from the central axis of the clamping ring.

[0046] In this technical solution, the adjusting rod has an external thread on its outer circumference, and the corresponding internal thread is provided on the inner wall of the fixing tube. After the adjusting rod is inserted into the fixing tube, it is screwed into the fixing tube through the mating of the internal and external threads to adjust its position. The non-circular auxiliary rotating groove can be slotted, cross-shaped, etc., and the adjusting rod can be rotated and adjusted by inserting a corresponding screwdriver into the auxiliary rotating groove. The adjustment is flexible, convenient, and highly accurate, and the connection structure is reliable.

[0047] In another technical solution, such as Figure 1As shown, in the pipeline fixing device for the ground source heat pump, the adjusting rod 4 is provided with an adjusting spring 3 coaxial with the central axis of the clamping ring 1 at one end, and a protective plate 2 is provided at the free end of the adjusting spring 3.

[0048] In this technical solution, the protective plate 2 abuts against the heat exchange tube to clamp it. The elastic buffering effect of the adjusting spring 3 can avoid rigid compression of the heat exchange tube during clamping, preventing the pipe from deforming or breaking due to excessive force. It is especially suitable for fixing flexible pipes of different materials (such as PE pipes). The elastic force of the spring can automatically adjust the clamping force according to the pipe diameter, so that the three protective plates 2 are evenly attached to the circumference of the pipe, forming an adaptive ring-shaped fixing structure, which solves the problem that traditional rigid clamping devices are difficult to be compatible with pipes of different sizes.

[0049] When the heat exchange tubes are impacted by soil or subjected to external vibration, the adjusting spring 3 absorbs the impact force and offsets part of the displacement through elastic deformation, reducing radial sway and axial slippage of the pipes and improving the impact resistance of the fixing device. The protective plate 2, acting as a medium for transmitting spring force, increases the contact area with the pipes, dispersing concentrated force into uniform surface pressure. Combined with the buffering effect of the spring, this further reduces local stress concentration, ensuring stable pipe arrangement under complex operating conditions and maintaining the heat exchange efficiency of the ground source heat pump system. Furthermore, the preload of the adjusting spring 3 can be flexibly adjusted by rotating the adjusting rod 4, adapting to the clamping requirements of different installation scenarios without additional tools, simplifying the construction process and improving the versatility and ease of operation of the device.

[0050] In another technical solution, in the pipe fixing device for the ground source heat pump, the side of the protective plate close to the heat exchange tube is provided with an anti-slip pad.

[0051] In this technical solution, the protective plate 2 is attached to the heat exchange tube surface with an anti-slip pad, which can increase the friction with the outer wall of the tube, suppress axial sliding and radial rotation, and avoid misalignment caused by backfilling impact or vibration; its flexible material (such as rubber) fits tightly with the tube surface to prevent scratches and squeezing damage to the tube; it can also work with the adjusting spring to make the clamping force evenly transmitted, avoid local stress concentration, improve compatibility with tubes of different materials and surface roughness, and ensure that the spacing and parallelism of multiple tubes are maintained after backfilling, thus maintaining heat exchange efficiency.

[0052] In another technical solution, such as Figure 1 , Figure 2As shown, in the pipe fixing device for the ground source heat pump, a T-shaped groove 12 extending circumferentially is provided on the side wall of the clamping ring 1. A sliding plate 14 is slidably disposed in the groove 12. The connecting block 7 passes through the groove of the groove 12 and is connected to the sliding plate 14. A plurality of first positioning holes 13 arranged along the length direction are provided on the side wall of the groove 12 away from the clamping ring 1. A second positioning hole at the same height as the first positioning hole 13 is provided on the sliding plate 14. A positioning rod 10 is inserted into the second positioning hole and one of the first positioning holes 13.

[0053] In this technical solution, the T-shaped groove 12 is a circumferential channel formed on the side wall of the clamping ring 1. Its cross-section is "T"-shaped, consisting of a wider main groove and an upper limiting groove. The main groove accommodates the main body of the slide plate 14, while the limiting groove restricts the slide plate 14 from radially disengaging, allowing it to slide only circumferentially along the clamping ring 1. The slide plate 14 is an inverted "T"-shaped plate. The portion embedded in the groove 12 matches the main groove, and the free end is fixedly connected to the connecting block 7. As the slide plate 14 slides, it drives the connecting block 7 to move circumferentially. The first positioning hole 13 is a through hole evenly distributed along the length of the groove 12, located on the side wall of the groove 12 away from the clamping ring 1. The second positioning hole is formed on the slide plate 14, at the same height and with the same diameter as the first positioning hole 13. After the two are aligned, the positioning rod 10 can be inserted. The positioning rod 10 is a threaded cylindrical rod that is screwed into the positioning hole to lock the position of the slide plate 14 and prevent slippage. When the positioning rod 10 is inserted into one of the second positioning holes corresponding to the first positioning hole 13, the mounting tube 9, the limiting cylinder 6, and the fixing tube 5 which is not adjacent to the mounting tube 9 are coaxial.

[0054] The T-shaped slide groove 12 is machined using a milling process. The width of the main groove is 0.5-1 mm larger than the main body of the slide plate 14, ensuring smooth sliding and appropriate clearance. The depth of the limiting groove is 1.2 times the thickness of the limiting part of the slide plate 14 to prevent the slide plate 14 from coming off. The slide plate 14 is made of the same material as the clamping ring 1 (such as aluminum alloy), and its surface is treated with an anti-slip coating for easy manual pushing. The connecting block 7 is fixed to the free end of the slide plate 14 with bolts, and changes the circumferential position of the limiting cylinder 6 and the mounting tube 9 as the slide plate 14 moves.

[0055] The spacing between the positioning holes is set according to the adjustment accuracy (e.g., 25 mm). One end of the positioning rod 10 is machined with an external thread (pitch of 1 to 1.5 mm) to match the internal threads of the first positioning hole 13 and the second positioning hole. The other end has a knob for easy operation. During adjustment, loosen the positioning rod 10, slide the slide plate 14 to the target position, align the second positioning hole with the corresponding first positioning hole 13, and then tighten the positioning rod 10. The axial force of the thread will press the slide plate 14 against the side wall of the slide groove 12. This structure allows for flexible adjustment of the circumferential position of the connecting block 7 via the slide groove 12.

[0056] This technical solution solves the problem of fixed connection positions in existing devices. Through the circumferential sliding of the slide groove 12 and the multi-positioning of the first positioning hole 13, the distance between the spacers or the pipe spacing can be flexibly adjusted. Combined with the angle adjustment of the ball joint, radial or arc-shaped pipe arrangements can be achieved in circular or irregular sites, avoiding pipe misalignment caused by limited connection positions and ensuring that the spacing error between multiple pipes after burial is ≤±3 mm, maintaining efficient heat exchange. When it is necessary to increase the included angle between adjacent devices, the positioning rod 10 is loosened, the sliding plate 14 is slid to change the orientation of the connecting block 7, and after re-inserting the positioning rod 10 for fixation, the orientation of the limiting cylinder 6 and the installation pipe 9 can be adjusted to adapt to complex pipe layout requirements.

[0057] In another technical solution, in the pipe fixing device for the ground source heat pump, the positioning rod is movably inserted into the corresponding first positioning hole and second positioning hole through a threaded structure.

[0058] In this technical solution, the positioning rod has an external thread on its outer circumference, and the first and second positioning holes have internal threads that match the external thread. The positioning rod is fixed by being screwed into the first and second positioning holes through the cooperation of the internal and external threads. The self-locking of the threads enhances the reliability of the connection, prevents the slide plate from shifting, improves vibration resistance, and ensures the spacing accuracy. The operation is simple, and the fixing or loosening can be completed within 10 seconds, improving construction efficiency. In conjunction with the chute and slide plate, it forms a "sliding adjustment-thread locking" system to avoid pipe misalignment and maintain heat exchange efficiency.

[0059] The number of devices and processing scale described herein are for the purpose of simplifying the description of this utility model. Applications, modifications, and variations of this utility model will be readily apparent to those skilled in the art.

[0060] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A pipe fixing device for a ground source heat pump, characterized in that, include: A clamping ring has three equal-height adjustment holes evenly distributed along its circumference on its side wall. A horizontal fixing tube of the same diameter as the adjustment holes is provided on the outer side wall of the clamping ring. A horizontal adjustment rod is inserted into the fixing tube and its corresponding adjustment hole. A connecting block is also provided on the outer side wall of the clamping ring between two of the fixing tubes. A limiting cylinder is horizontally fitted around the outer circumference of the connecting block. The axis of the limiting cylinder is at the same height as the axis of the fixing tube. The mounting tube has one end sealed and is provided with an annular limiting groove that matches the limiting cylinder. The sealed end of the mounting tube is ball-jointed with the connecting block. The inner diameter of the mounting tube is larger than the outer diameter of the fixing tube. The inner wall of the mounting tube is provided with an internal thread, and the outer wall of the fixing tube is provided with an external thread that matches the internal thread.

2. The pipe fixing device for a ground source heat pump as described in claim 1, characterized in that, The sealing end of the mounting tube is provided with a hinge ball, and the free end of the connecting block is provided with a hinge groove that matches the hinge ball.

3. The pipe fixing device for a ground source heat pump as described in claim 1, characterized in that, The adjusting rod is inserted into its corresponding fixed cylinder via a threaded structure, and a non-circular auxiliary rotation groove is provided at the end of the adjusting rod away from the central axis of the clamping ring.

4. The pipe fixing device for a ground source heat pump as described in claim 1, characterized in that, An adjusting spring coaxial with the adjusting rod is provided at one end near the central axis of the clamping ring, and a protective plate is provided at the free end of the adjusting spring.

5. The pipe fixing device for a ground source heat pump as described in claim 4, characterized in that, The protective plate has an anti-slip pad on the side close to the heat exchange tube.

6. The pipe fixing device for a ground source heat pump as described in claim 1, characterized in that, The clamping ring has a T-shaped groove extending circumferentially on its side wall. A slide plate is slidably disposed in the groove. The connecting block passes through the groove and connects to the slide plate. The side wall of the groove away from the clamping ring has a plurality of first positioning holes arranged along its length. The slide plate has a second positioning hole at the same height as the first positioning holes. A positioning rod is inserted into the second positioning hole and one of the first positioning holes.

7. The pipe fixing device for a ground source heat pump as described in claim 1, characterized in that, The positioning rod is inserted into the corresponding first positioning hole and second positioning hole via a threaded structure.

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