Ground source heat pump buried lower well and anti-floating device and construction process thereof

Abstract

The present application relates to the ground source heat pump buried pipe construction technology, particularly relates to a kind of ground source heat pump buried lower well and anti-floating device and its construction technology, device includes vertical buried pipe, pipe fixing device, automatic anti-floating mechanism and interlocking anti-floating mechanism;Vertical buried pipe includes first vertical buried pipe and second vertical buried pipe;Second vertical buried pipe is fixed with automatic anti-floating mechanism, first vertical buried pipe is fixed with interlocking anti-floating mechanism, pipe fixing device is slidably sleeved on the outside of all vertical buried pipes, and is connected with interlocking anti-floating mechanism.The construction technology includes: automatic anti-floating mechanism and interlocking anti-floating mechanism are respectively fixed and installed on different vertical buried pipes, control connecting piece connects hook and third pipe clamp;Install pipe fixing device, control vertical buried pipe lower well;Make interlocking anti-floating mechanism unfold;Heat exchange well backfill, fix positioning pipe.Through the above technical scheme, the problem of vertical buried pipe depth control and buried pipe floating is solved.

Description

Technical Field

[0001] This invention relates to the field of ground source heat pump buried pipe construction technology, and in particular to a ground source heat pump buried well and anti-buoyancy device and its construction process. Background Technology

[0002] Ground source heat pump technology is a green, low-carbon, highly efficient, and energy-saving renewable energy utilization technology that has been widely applied in recent years. When there is sufficient space around the building, outdoor open space is often chosen for the placement of the heat exchange holes. When space around the building is limited, the ground source heat pump buried pipe heat exchange holes can be arranged under the building foundation to improve land resource utilization, but this method involves the issue of overlapping construction between different units.

[0003] With increasingly scarce land available for construction, the installation of underground pipe ground source heat pump systems under building slabs has become a major trend in the industry.

[0004] However, installing a ground source heat pump under a building raft presents two problems: First, construction of the ground source heat pump under the building raft involves significant overlap with civil engineering work, greatly impacting the construction period. If the depth of the protective cover soil in the foundation pit is too shallow, drilling at this working face will severely disturb the strata. In northern regions, where groundwater levels rise annually due to environmental factors, drilling into the heat exchange holes can penetrate the confined aquifer, leading to water inrush and pooling. If the depth of the protective cover soil in the foundation pit is too deep, the predetermined length of the buried pipe needs to exceed the effective heat exchange length, resulting in material waste. Furthermore, the horizontal trench excavation depth is relatively deep, increasing construction difficulty and reducing efficiency. Second, if the ground source heat pump is installed before the earthwork trenching, the vertical buried pipe is buried at a specified depth, and the horizontal pipe is installed later during trenching. However, the depth of the ground source heat pump well is difficult to control, and the buried pipe carries the risk of floating within the well. To address these problems, this application proposes a ground source heat pump buried well installation and anti-floating device, along with its construction process. Summary of the Invention

[0005] (a) Technical problems to be solved

[0006] To address the shortcomings of existing technologies, this invention provides a ground source heat pump buried well installation and anti-buoyancy device and its construction process, which solves the problems of current ground source heat pump vertical buried pipe installation construction, vertical buried pipe depth control and buried pipe buoyancy.

[0007] (II) Technical Solution

[0008] To achieve the above objectives, Embodiment 1 of this application provides a ground source heat pump buried well and anti-buoyancy device, installed inside a heat exchange well, including a vertical buried pipe, a pipe fixing device, an automatic anti-buoyancy mechanism, and an interlocking anti-buoyancy mechanism; the vertical buried pipe is inserted into a heat exchange hole in the heat exchange well, and the vertical buried pipe includes at least one first vertical buried pipe and multiple second vertical buried pipes; the automatic anti-buoyancy mechanism is fixed on each second vertical buried pipe, and the interlocking anti-buoyancy mechanism is fixed on the first vertical buried pipe, and both the automatic anti-buoyancy mechanism and the interlocking anti-buoyancy mechanism are engaged with the heat exchange hole; the pipe fixing device is located above the interlocking anti-buoyancy mechanism and the automatic anti-buoyancy mechanism, and the pipe fixing device is slidably sleeved on the outside of all the vertical buried pipes and connected to the interlocking anti-buoyancy mechanism.

[0009] Preferably, the automatic anti-buoyancy mechanism includes a first pipe clamp and a first wing plate; the first pipe clamp is detachably and fixedly connected to the outside of the second vertical buried pipe; one end of the first wing plate is hinged to the first pipe clamp, and the other end can rotate towards or away from the second vertical buried pipe; multiple first wing plates are provided at equal angles along the circumference of the first pipe clamp.

[0010] Preferably, the interlocking anti-buoyancy mechanism includes a second pipe clamp, a third pipe clamp, and a wing plate assembly; the second pipe clamp and the third pipe clamp are both sleeved on the outside of the first vertical buried pipe, the second pipe clamp is located below the third pipe clamp, the second pipe clamp and the first vertical buried pipe are detachably fixedly connected, the inner diameter of the third pipe clamp is larger than that of the first vertical buried pipe, and the third pipe clamp and the first vertical buried pipe are slidably connected; the wing plate assembly includes a second wing plate and a third wing plate, one end of the second wing plate and the third wing plate are hinged to each other, the other end of the second wing plate is hinged to the second pipe clamp, and the other end of the third wing plate is hinged to the third pipe clamp; the third pipe clamp is connected to the pipe clamp, and the second wing plate and the third wing plate rotate toward or away from the first vertical buried pipe.

[0011] Preferably, the pipe fixing device includes an orifice plate, a positioning tube, and a hook; the orifice plate has a plurality of positioning holes spaced apart, and each of the vertical buried pipes passes through one of the positioning holes; one end of the positioning tube is fixedly connected to the orifice plate, and the other end is located outside the heat exchange well; the hook is fixed to the orifice plate and is located on the side of the orifice plate away from the positioning tube, and a connector is provided on the hook, the connector being connected to the interlocking anti-buoyancy mechanism.

[0012] Preferably, the connector is a metal wire, chain, or rope.

[0013] Preferably, a fourth pipe clamp is provided on the vertical buried pipe, the fourth pipe clamp is located above the orifice plate, and the outer diameter of the fourth pipe clamp is larger than the diameter of the positioning hole; the length of the vertical buried pipe above the orifice plate is not less than 30cm.

[0014] Preferably, a reinforcing rib is provided between the perforated plate and the positioning tube, and multiple reinforcing ribs are provided at intervals.

[0015] To achieve the above objectives, Embodiment 2 of this application provides a construction process for a ground source heat pump buried well installation and anti-buoyancy device, using a ground source heat pump buried well installation and anti-buoyancy device from Embodiment 1, including the following steps: Step 1, fixing the automatic anti-buoyancy mechanism and the interlocking anti-buoyancy mechanism onto different vertical buried pipes respectively, and controlling the connection of the connecting hook and the third pipe clamp; Step 2, installing the pipe fixing device, controlling the vertical buried pipe to be lowered into the well, and lowering it to a set depth; Step 3, lifting the pipe fixing device to a set height to deploy the interlocking anti-buoyancy mechanism; Step 4, backfilling the heat exchange well and fixing the positioning pipe.

[0016] Preferably, in step one, the automatic anti-buoyancy mechanism is fixed at one-third of the upper part of the vertical buried pipe, the interlocking anti-buoyancy mechanism is installed higher than all the automatic anti-buoyancy mechanisms, and the interlocking anti-buoyancy mechanism is 1.5 meters to 2.5 meters away from the upper end of the vertical buried pipe.

[0017] Preferably, in step two, when installing the pipe fixing device, each vertical buried pipe passes through a positioning hole, the distance between the orifice plate and the upper end of the vertical buried pipe is controlled to be no less than 30cm, and the depth of the vertical buried pipe in the well is calculated based on the size of the pipe fixing device.

[0018] (III) Beneficial Effects

[0019] This invention provides a buried ground source heat pump well-mounting and anti-buoyancy device and its construction process. Through the inclusion of an automatic anti-buoyancy mechanism, an interlocking anti-buoyancy mechanism, and a pipe-fixing device, it solves the problems of current buried vertical pipe construction for ground source heat pumps, including issues with pipe depth control and pipe buoyancy. Secondly, it addresses the problem of vertical buried pipes penetrating confined aquifers, where water surge causes cavities at the top of the pipe head, making it difficult to locate pipe deviations. Finally, the system is easy to install, implement, and promote; all components are easily mass-produced, and the construction difficulty is low. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a ground source heat pump buried well and anti-buoyancy device according to the present invention;

[0021] Figure 2 This is a schematic diagram highlighting the automatic anti-buoyancy mechanism of the present invention;

[0022] Figure 3 This is a schematic diagram highlighting the interlocking anti-buoyancy mechanism of the present invention;

[0023] Figure 4 This is a schematic diagram of the tube holder of the present invention.

[0024] Marked in the attached diagram:

[0025] 100. Vertical buried pipe; 110. First vertical buried pipe; 120. Second vertical buried pipe; 200. Pipe clamp; 210. Orifice plate; 211. Positioning hole; 220. Positioning pipe; 230. Hook; 240. Connector; 250. Fourth pipe clamp; 260. Reinforcing rib; 300. Automatic anti-buoyancy mechanism; 310. First pipe clamp; 320. First wing plate; 400. Interlocking anti-buoyancy mechanism; 410. Second pipe clamp; 420. Third pipe clamp; 430. Wing plate assembly; 431. Second wing plate; 432. Third wing plate; 500. Heat exchange well; 510. Heat exchange hole. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] Example 1

[0028] This invention provides a ground source heat pump buried well and anti-buoyancy device, see [link / reference]. Figures 1 to 4 The device is installed in the heat exchange well 500 and includes a vertical buried pipe 100, a pipe fixing device 200, an automatic anti-buoyancy mechanism 300 and an interlocking anti-buoyancy mechanism 400.

[0029] The vertical buried pipe 100 is inserted into the heat exchange hole 510 in the heat exchange well 500. The vertical buried pipe 100 includes at least one first vertical buried pipe 110 and multiple second vertical buried pipes 120. In actual construction, one first vertical geothermal pipe and one second vertical geothermal pipe, or two second vertical geothermal pipes can be combined to form a U-shaped heat exchange pipe.

[0030] An automatic anti-buoyancy mechanism 300 is fixed on each of the second vertical buried pipes 120, and an interlocking anti-buoyancy mechanism 400 is fixed on the first vertical buried pipe 110. Both the automatic anti-buoyancy mechanism 300 and the interlocking anti-buoyancy mechanism 400 are connected to the heat exchange hole 510. After the vertical buried pipe 100 is lowered into the well, the automatic anti-buoyancy mechanism 300 and the interlocking anti-buoyancy mechanism 400 serve to prevent the vertical buried pipe 100 from floating.

[0031] The pipe securing device 200 is located above the interlocking anti-buoyancy mechanism 400 and the automatic anti-buoyancy mechanism 300. The pipe securing device 200 is slidably sleeved on the outside of all the vertical buried pipes 100 and connected to the interlocking anti-buoyancy mechanism 400. The pipe securing device 200 is used to position the vertical buried pipes 100 after they are lowered into the well, which facilitates subsequent earthwork trenching and also makes it easier to locate the vertical buried pipes 100 later.

[0032] Specifically, the automatic anti-buoyancy mechanism 300 includes a first pipe clamp 310 and a first wing plate 320.

[0033] The first pipe clamp 310 is detachably and fixedly connected to the outside of the second vertical buried pipe 120; after installation, there will be no relative sliding between the first pipe clamp 310 and the second vertical buried pipe 120. One end of the first wing plate 320 is hinged to the first pipe clamp 310, and the other end can rotate towards or away from the second vertical buried pipe 120; multiple first wing plates 320 are provided at equal angular intervals along the circumference of the first pipe clamp 310.

[0034] During the lowering process, the first wing plate 320 rotates towards the second vertical buried pipe 120, causing multiple first wing plates 320 to be in a retracted state. During this process, the first wing plates 320 move downwards along with the second vertical buried pipe 120. When they enter the heat exchange hole 510, the first wing plates 320 rotate outwards and unfold, abutting against the inner wall of the heat exchange hole 510, thus preventing upward movement. When the second vertical buried pipe 120 rises due to buoyancy, the first wing plates 320 will further unfold and insert into the inner wall of the heat exchange hole 510, thereby preventing the second vertical buried pipe 120 from rising.

[0035] The interlocking anti-buoyancy mechanism 400 includes a second pipe clamp 410, a third pipe clamp 420, and a wing plate assembly 430.

[0036] The second pipe clamp 410 and the third pipe clamp 420 are both sleeved on the outside of the first vertical buried pipe 110. The second pipe clamp 410 is located below the third pipe clamp 420. The second pipe clamp 410 and the first vertical buried pipe 110 are detachably and fixedly connected. The inner diameter of the third pipe clamp 420 is larger than that of the first vertical buried pipe 110. The third pipe clamp 420 and the first vertical buried pipe 110 are slidably connected.

[0037] The wing plate assembly 430 includes a second wing plate 431 and a third wing plate 432. One end of the second wing plate 431 and the third wing plate 432 are hinged to each other. The other end of the second wing plate 431 is hinged to a second pipe clamp 410, and the other end of the third wing plate 432 is hinged to a third pipe clamp 420. The third pipe clamp 420 is connected to the pipe fastener 200. The second wing plate 431 and the third wing plate 432 can rotate towards or away from the first vertical buried pipe 110. Multiple sets of wing plate assemblies are spaced apart along the circumferential direction of the second pipe clamp 410 / third pipe clamp 420.

[0038] During the well-running process, the third pipe clamp 420 moves closer to the second pipe clamp 410 via the interlocking anti-buoyancy mechanism 400, causing the second wing plate 431 and the third wing plate 432 to fit against the first vertical buried pipe 110, facilitating the well-running. After the well-running process, since the second pipe clamp 410 and the first vertical buried pipe 110 are fixed, when the pipe fixing device 200 controls the third pipe clamp 420 to move upward a certain distance, it will cause the wing plate assembly 430 to swing and unfold away from the first vertical buried pipe 110. At this time, after the second wing plate 431 and the third wing plate 432 unfold to a certain angle, they press against the inner wall of the heat exchange hole 510. Due to the hinged relationship between the third wing plate 432 and the second wing plate 431, the third wing plate 432 creates a limiting effect on the second wing plate 431, allowing the second wing plate 431 to be passively unfolded and maintained in the unfolded state, thereby preventing uplift.

[0039] It should be noted that during construction, the diameter of the heat exchange hole 510 is generally 15cm. When designing the length of the first wing plate 320 and the second wing plate 431, their length is not less than 15cm. Therefore, after installation, the first wing plate 320 and the second wing plate 431 will be inserted into the wall of the heat exchange hole 510 after being unfolded, so as to prevent the vertical buried pipe 100 from floating.

[0040] The pipe fixing device 200 includes an orifice plate 210, a positioning tube 220, and a hook 230.

[0041] Multiple positioning holes 211 are spaced apart on the orifice plate 210, and each vertical buried pipe 100 passes through one positioning hole 211. One end of the positioning pipe 220 is fixedly connected to the orifice plate 210, and the other end is located outside the heat exchange well 500. The hook 230 is fixed to the orifice plate 210 and is located on the side of the orifice plate 210 away from the positioning pipe 220. A connector 240 is provided on the hook 230, and the connector 240 is connected to the interlocking anti-buoyancy mechanism 400. Specifically, the other end of the connector 240 is connected to the third pipe clamp 420. The connector 240 is a metal wire, chain, or rope.

[0042] The pipe clamp 200 connects to the third pipe clamp 420. After the pipe is lowered into the well, the third pipe clamp 420 can be moved upward a certain distance, thus preventing the vertical buried pipe 100 from floating. Simultaneously, it can limit and position the vertical buried pipe 100. This allows for quick location of the vertical buried pipe 100 during subsequent earthwork trenching and horizontal pipe trench construction.

[0043] To prevent the vertical buried pipe 100 from detaching from the orifice plate 210 during the process of lowering the pipe into the well or during the upward movement of the orifice plate 210, a fourth pipe clamp 250 is installed on the vertical buried pipe 100. The fourth pipe clamp 250 is located above the orifice plate 210 and is fixedly connected to the vertical buried pipe 100. The outer diameter of the fourth pipe clamp 250 is larger than the diameter of the positioning hole 211. The length of the vertical buried pipe 100 above the orifice plate 210 is not less than 30cm.

[0044] The installation position of the fourth pipe clamp 250 should meet the following conditions: when the second wing plate 431 and the third wing plate 432 are retracted near the vertical buried pipe 100, there is a certain distance between the fourth pipe clamp 250 and the orifice plate 210. When the orifice plate 210 is moved upward, the hinge point of the second wing plate 431 and the third wing plate 432 moves away from the vertical buried pipe 100, and the distance between this hinge point and the vertical buried pipe 100 gradually increases. During this process, the second wing plate 431 and the third wing plate 432 can unfold to abut against the inner wall of the heat exchange hole 510. During this process, the fourth pipe clamp 250 will not abut against the orifice plate 210 and will not restrict the upward movement of the orifice plate 210. Even better, once the second flange 431 and the third flange 432 have extended to abut against the inner wall of the heat exchange hole 510 and are thus limited, if the inner wall of the heat exchange hole 510 does not limit their extension, the distance between the hinge point of the second flange 431 and the third flange 432 and the vertical buried pipe 100 will decrease. During this process, the fourth pipe clamp 250 can limit the orifice plate 210, preventing the second flange 431 and the third flange 432 from over-extension. Furthermore, once the vertical buried pipe 100 is lowered into the well, the second flange 431 and the third flange 432 can be kept in an extended and limited state within the heat exchange hole 510.

[0045] A reinforcing rib 260 is provided between the orifice plate 210 and the positioning tube 220, and multiple reinforcing ribs 260 are provided at intervals.

[0046] During the process of lowering the vertical buried pipe 100 into the well, the entire vertical buried pipe 100 will be lowered into the ground. At this time, the depth of the vertical buried pipe 100 in the well can be determined according to the length of the pre-reserved pipe fixing device 200. After the pipe reaches the designated depth, the pipe fixing device 200 is gently lifted upwards to deploy the interlocking anti-buoyancy device. The second wing plate 431 and the third wing plate 432 are fixed to the inner wall of the heat exchange hole 510 to prevent the pipe from floating. At this time, the well lowering device is lifted. The vertical buried pipe 100 will have a tendency to rise due to the upward pull and buoyancy. At this time, the wing plate of the self-controlled anti-buoyancy device opens to prevent the lower pipe from continuing to float.

[0047] After the pipe is laid, the manhole is backfilled, and the positioning pipe 220 of the pipe fixing device 200 is fixed. When subsequent excavation work is carried out, the positioning pipe 220 can be directly excavated without damaging the buried heat exchange pipe below. During the construction of the horizontal pipe, the buried heat exchange well 500 can be located based on the straight pipe section of the pipe fixing device 200, improving the construction efficiency of the horizontal pipe of the heat exchange well 500.

[0048] Furthermore, in some projects, earthwork trenching will be carried out, with a certain thickness of protective cover soil reserved under the foundation pit before ground source heat pump drilling. The building foundation pit treatment only blocks shallow confined water, while ground source heat pump drilling will penetrate deep confined water, causing groundwater to surge. The surging groundwater will carry away the soil around the pipe, forming a cavity, causing the pipe to shift with the water in the cavity. This makes it difficult to find the vertical buried pipe 100 during the horizontal pipe construction process. This invention patent uses a pipe fixing device 200 to fix the vertical buried pipe 100 and extends it to the working plane outside the heat exchange well 500 through a positioning pipe 220, which facilitates the search for the vertical buried pipe 100 during horizontal pipe trench excavation.

[0049] Example 2

[0050] This invention provides a construction process for buried ground source heat pump well installation and anti-buoyancy, see [link to relevant documentation]. Figures 1 to 4 The process method uses a ground source heat pump buried well and anti-buoyancy device as described in Example 1, and includes the following steps:

[0051] Step 1: Fix the automatic anti-buoyancy mechanism 300 and the interlocking anti-buoyancy mechanism 400 onto different vertical buried pipes 100 respectively, and control the connection component 240 to connect the hook 230 and the third pipe clamp 420.

[0052] In step one, the automatic anti-buoyancy mechanism 300 is fixed at the upper third position of the vertical buried pipe 100, the interlocking anti-buoyancy mechanism 400 is installed higher than all the automatic anti-buoyancy mechanisms 300, and the interlocking anti-buoyancy mechanism 400 is 1.5 meters to 2.5 meters away from the upper end of the vertical buried pipe 100.

[0053] Step 2: Install the pipe fixing device 200, control the vertical buried pipe 100 to be lowered into the well, and lower it into the well to the set depth.

[0054] In step two, when installing the pipe fixing device 200, each vertical buried pipe 100 is made to pass through a positioning hole 211, the distance between the orifice plate 210 and the upper end of the vertical buried pipe 100 is controlled to be no less than 30cm, and the depth of the vertical buried pipe 100 in the well is calculated based on the size of the pipe fixing device 200.

[0055] Step 3: Lift the fixed pipe device 200 to the set height to deploy the interlocking anti-buoyancy mechanism 400.

[0056] Step 4: Backfill the heat exchange well 500 and fix the positioning pipe 220.

[0057] By adopting the above construction technology, firstly, the problems of controlling the depth of the vertical buried pipe and the floating of the buried pipe in the current construction of ground source heat pumps are solved. Secondly, the problems of the vertical buried pipe passing through the confined water layer, the surge of water causing a cavity at the top of the pipe head, and the difficulty in locating the offset of the vertical buried pipe are solved. Thirdly, the system is convenient to install, easy to implement and promote, all components are easy to mass-produce, and the construction difficulty is low.

[0058] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and 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. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0059] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Without conflict, the embodiments and features in the embodiments of this invention can be combined with each other.

[0060] The embodiments described above are merely illustrative of implementation methods of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of this patent should be determined by the appended claims.

Claims

1. A ground source heat pump buried well and anti-buoyancy device, installed inside a heat exchange well (500), characterized in that, It includes a vertical buried pipe (100), a pipe fixing device (200), an automatic anti-buoyancy mechanism (300), and an interlocking anti-buoyancy mechanism (400). The vertical buried pipe (100) is inserted into the heat exchange hole (510) in the heat exchange well (500). The vertical buried pipe (100) includes at least one first vertical buried pipe (110) and multiple second vertical buried pipes (120). The automatic anti-buoyancy mechanism (300) is fixed on each of the second vertical buried pipes (120), and the interlocking anti-buoyancy mechanism (400) is fixed on the first vertical buried pipe (110). The automatic anti-buoyancy mechanism (300) and the interlocking anti-buoyancy mechanism (400) are both engaged with the heat exchange hole (510). The pipe fixing device (200) is located above the interlocking anti-buoyancy mechanism (400) and the automatic anti-buoyancy mechanism (300). The pipe fixing device (200) is slidably sleeved on the outside of all the vertical buried pipes (100) and connected to the interlocking anti-buoyancy mechanism (400). The automatic anti-buoyancy mechanism (300) includes a first pipe clamp (310) and a first wing plate (320); The first pipe clamp (310) is detachably and fixedly connected to the outside of the second vertical buried pipe (120); one end of the first wing plate (320) is hinged to the first pipe clamp (310), and the other end can rotate toward or away from the second vertical buried pipe (120); multiple first wing plates (320) are provided at equal angles along the circumference of the first pipe clamp (310); The interlocking anti-buoyancy mechanism (400) includes a second pipe clamp (410), a third pipe clamp (420), and a wing plate assembly (430). The second pipe clamp (410) and the third pipe clamp (420) are both sleeved on the outside of the first vertical buried pipe (110). The second pipe clamp (410) is located below the third pipe clamp (420). The second pipe clamp (410) and the first vertical buried pipe (110) are detachably and fixedly connected. The inner diameter of the third pipe clamp (420) is larger than that of the first vertical buried pipe (110). The third pipe clamp (420) and the first vertical buried pipe (110) are slidably connected. The wing plate assembly (430) includes a second wing plate (431) and a third wing plate (432), one end of the second wing plate (431) and the third wing plate (432) are hinged to each other, the other end of the second wing plate (431) is hinged to a second pipe clamp (410), and the other end of the third wing plate (432) is hinged to the third pipe clamp (420); the third pipe clamp (420) is connected to the pipe fastener (200), and the second wing plate (431) and the third wing plate (432) rotate toward or away from the first vertical buried pipe (110); The tube holder (200) includes an orifice plate (210), a positioning tube (220), and a hook (230). The perforated plate (210) is provided with a plurality of positioning holes (211) spaced apart, and each of the vertical buried pipes (100) passes through one of the positioning holes (211); one end of the positioning pipe (220) is fixedly connected to the perforated plate (210), and the other end is located outside the heat exchange well (500); The hook (230) is fixed on the perforated plate (210) and located on the side of the perforated plate (210) away from the positioning tube (220). A connector (240) is provided on the hook (230), and the connector (240) is connected to the interlocking anti-buoyancy mechanism (400).

2. The ground source heat pump buried well and anti-buoyancy device according to claim 1, characterized in that, The connector (240) is a metal wire, chain, or rope.

3. The ground source heat pump buried well and anti-buoyancy device according to claim 1, characterized in that, A fourth pipe clamp (250) is provided on the vertical buried pipe (100). The fourth pipe clamp (250) is located above the orifice plate (210), and the outer diameter of the fourth pipe clamp (250) is larger than the diameter of the positioning hole (211). The length of the vertical buried pipe (100) above the orifice plate (210) is not less than 30cm.

4. The ground source heat pump buried well and anti-buoyancy device according to claim 1, characterized in that, A reinforcing rib (260) is provided between the perforated plate (210) and the positioning tube (220), and multiple reinforcing ribs (260) are provided at intervals.

5. A construction process for buried ground source heat pump well installation and anti-buoyancy, characterized in that, Using the ground source heat pump buried well and anti-buoyancy device according to any one of claims 1-4, the following steps are included: Step 1: Fix the automatic anti-buoyancy mechanism (300) and the interlocking anti-buoyancy mechanism (400) on different vertical buried pipes (100) respectively, and connect the control connector (240) to the hook (230) and the third pipe clamp (420). Step 2: Install the pipe fixing device (200), control the vertical buried pipe (100) to be lowered into the well, and lower it into the well to the set depth; Step 3: Lift the pipe fixing device (200) to a set height to deploy the interlocking anti-buoyancy mechanism (400); Step 4: Backfill the heat exchange well (500) and fix the positioning pipe (220).

6. The construction process for a buried ground source heat pump with anti-buoyancy as described in claim 5, characterized in that, In step one, the automatic anti-buoyancy mechanism (300) is fixed at one-third of the upper part of the vertical buried pipe (100), the interlocking anti-buoyancy mechanism (400) is installed at a position higher than all the automatic anti-buoyancy mechanisms (300), and the interlocking anti-buoyancy mechanism (400) is 1.5 meters to 2.5 meters away from the upper end of the vertical buried pipe (100).

7. The construction process for a ground source heat pump buried in a well and with anti-buoyancy as described in claim 5, characterized in that, In step two, when installing the pipe fixing device (200), each vertical buried pipe (100) is made to pass through a positioning hole (211), the distance between the control plate (210) and the upper end of the vertical buried pipe (100) is not less than 30cm, and the depth of the vertical buried pipe (100) in the well is calculated based on the size of the pipe fixing device (200).

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