Ground source heat pump anti-winding device

Abstract

The utility model relates to the shallow geothermal energy development technical field, concretely is a kind of ground source heat pump buried pipe anti-self winding device, including branch pipe card body, fastening pin, open and close rotating shaft, separate support and drill rod perforation, the number of branch pipe card body is four or two according to buried pipe form, open and close to fix buried pipe branch pipe by fastening pin, the number of separate support corresponds with card body, when double U type, it is distributed as "positive cross", when single U type, it is distributed as straight line, one end is connected drill rod perforation, the other end is connected branch pipe card body, so that each branch pipe keeps fixed interval in the borehole radial, drill rod perforation is for drill rod to pass through, the utility model is through rigid separate structure, effectively prevent that buried pipe occurs winding, extrusion and heat short circuit in the process of going down pipe, improves construction safety and system heat exchange efficiency.

Description

Technical Field

[0001] This utility model relates to the field of shallow geothermal energy development technology, specifically a ground source heat pump buried pipe anti-self-entanglement device. Background Technology

[0002] Ground source heat pump systems exchange heat with the ground through underground heat exchangers (buried pipes). Currently, vertical U-shaped PE buried pipes are commonly used, available in double U-shape (four branches) and single U-shape (two branches). After drilling is completed, the buried pipes need to be lowered into the borehole. Due to the presence of mud, water, and rock cuttings in the borehole, the buried pipes are prone to twisting and tangling during lowering due to buoyancy, friction, and their own flexibility. Branch tangling can lead to pipe compression, potentially causing pipe damage and leaks, posing construction safety hazards and shortening system lifespan. Simultaneously, direct contact between branches can cause "thermal short circuits," severely reducing heat exchange efficiency and increasing operating costs. Therefore, to address these issues, there is an urgent need to develop a ground source heat pump buried pipe anti-self-tangling device to overcome the shortcomings in current practical applications. Utility Model Content

[0003] The purpose of this utility model is to provide a device to prevent self-entanglement of buried pipes in ground source heat pumps, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: A self-wrapping prevention device for buried pipes of ground source heat pumps, comprising: Branch pipe clamp body, used to clamp and fix the buried pipe branch pipe; A fastening pin is provided on the branch pipe clamp body for opening, closing and locking the branch pipe clamp body; An opening and closing rotation shaft is provided on the branch pipe clamp body and is arranged opposite to the fastening pin. The branch pipe clamp body can rotate around the opening and closing rotation shaft to open and close. One end of the dividing support rod is fixedly connected to the branch pipe clamp body; The drill rod is drilled through a hole and fixedly connected to the other end of the partition support rod; The number of branch clamps is four or two, and the number of dividing rods is consistent with the number of branch clamps.

[0005] As a further embodiment of this utility model: the branch pipe clamp body is circular, and its inner wall diameter matches the outer wall size of the buried pipe branch pipe.

[0006] As a further embodiment of this utility model: the line connecting the fastening pin and the opening and closing rotation shaft constitutes the diameter of the branch pipe clamp body.

[0007] As a further embodiment of this utility model: when there are four branch pipe clamps, there are four dividing support rods. The four dividing support rods are coplanar with the drill rod through hole and are distributed in a "right cross" shape. The imaginary extension lines of the four dividing support rods intersect at the center of the drill rod through hole.

[0008] As a further embodiment of this utility model: the extension direction of each of the dividing support rods is the diameter direction of the branch pipe clamp body to which it is connected, and is perpendicular to the line connecting the fastening pin on the branch pipe clamp body and the opening and closing rotation axis.

[0009] As a further embodiment of this utility model: when there are two branch pipe clamps, there are two separating support rods. The two separating support rods are coplanar with the drill rod through hole and located on the same straight line, which is the diameter of the drill rod through hole.

[0010] As a further embodiment of this utility model: the extension direction of each of the dividing support rods is the diameter direction of the branch pipe clamp body to which it is connected, and is perpendicular to the line connecting the fastening pin on the branch pipe clamp body and the opening and closing rotation axis.

[0011] As a further embodiment of this utility model: the sum H1 of the lengths of the two separating support rods located in the same diameter direction, the diameter of the drill rod hole, and the outer diameter of the two branch pipe clamps in that direction is less than the diameter of the installation hole of the device.

[0012] As a further embodiment of this utility model: the sum of the lengths of the two separating support rods, the diameter of the drill rod hole, and the outer diameter of the two branch pipe clamps, H2, is not greater than the diameter of the installation hole of the device.

[0013] As a further embodiment of this utility model: the drill rod perforation is annular, and its inner diameter is 2-3 mm larger than the diameter of the construction drill rod.

[0014] Compared with the prior art, the beneficial effects of this utility model are: This anti-self-entanglement device for ground source heat pump buried pipes uses independent branch pipe clamps 1 to fix each buried pipe branch and rigid dividing rods to maintain a fixed spacing in the radial direction. This fundamentally eliminates the possibility of branch pipes entangled during the pipe laying process, and also avoids stress concentration and compression between pipes caused by entanglement. It effectively protects the buried pipe wall, prevents damage and leakage, and significantly improves construction safety and long-term system reliability. At the same time, it ensures that the heat exchange spacing between each buried pipe branch is always maintained as required by the design, preventing thermal short circuits caused by direct contact between pipes, thereby guaranteeing and optimizing the heat exchange performance of the ground source heat pump system. The branch pipe clamp adopts an openable design, which is simple to operate and can be quickly installed and fixed on the buried pipe, greatly improving construction efficiency. The overall structure of the device is designed according to the drilling size to ensure smooth placement in the hole. By increasing or decreasing the number of branch pipe clamps and dividing rods, it can flexibly adapt to different buried pipe forms such as single U-shaped and double U-shaped pipes, with good versatility. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the present invention for a double U-shaped underground pipe.

[0016] Figure 2 This is a schematic diagram of the structure of this utility model for a single U-shaped underground pipe.

[0017] In the diagram: 1. Branch pipe clamp; 2. Fastening pin; 3. Opening and closing rotating shaft; 4. Dividing support rod; 5. Drill rod through hole. Detailed Implementation

[0018] The technical solution of this application will be further described in detail below with reference to specific embodiments.

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] Please see Figure 1 In one embodiment of this utility model, a ground source heat pump buried pipe anti-self-entanglement device includes four branch pipe clamps 1, each branch pipe clamp 1 being provided with a fastening pin 2 and an opening / closing rotation shaft 3. Four dividing support rods 4 of equal length are welded to the outer periphery of the drill rod through hole 5 in a "right cross" shape, and the extension lines of the four dividing support rods 4 intersect at the center of the drill rod through hole 5. A branch pipe clamp 1 is welded and fixed to the other end of each dividing support rod 4. The extension direction of the dividing support rod 4 is the diameter direction of the branch pipe clamp 1 to which it is connected, and is perpendicular to the line connecting the fastening pin 2 and the opening / closing rotation shaft 3 on the branch pipe clamp 1.

[0021] Please see Figure 2In one embodiment of this utility model, a ground source heat pump buried pipe anti-self-entanglement device includes two branch pipe clamps 1. Two dividing support rods 4 of the same length are located on the same straight line, which passes exactly through the center of the drill rod through hole 5, forming its diameter. One end of the two dividing support rods 4 is firmly welded to the outer periphery of the drill rod through hole 5, and the other end is welded to a branch pipe clamp 1. The extension direction of the dividing support rod 4 is also the diameter direction of the connected branch pipe clamp 1, and is perpendicular to the line connecting the fastening pin 2 on the branch pipe clamp 1 and the opening and closing rotation shaft 3.

[0022] The fastening pin 2 serves as the opening and closing mechanism for the branch pipe clamp body 1. When opened, it allows the buried pipe branch pipe to be inserted into or removed from the clamp body; when closed, it ensures a tight fit and fixation between the buried pipe and the branch pipe clamp body 1. The opening and closing rotation shaft 3 is the pivot axis for the branch pipe clamp body 1 to perform its opening and closing actions. The line connecting the shaft 3 and the fastening pin 2 forms the diameter of the branch pipe clamp body's annulus. When the fastening pin 2 is open, the two parts of the branch pipe clamp body 1 can rotate 180° around the opening and closing rotation shaft 3, facilitating the insertion of the buried pipe. The number of the separating support rods 4 corresponds to the number of branch pipe clamp bodies 1.

[0023] For the double U-shaped buried pipe, there are four dividing supports 4, each of uniform length. One end of each of the four dividing supports 4 is securely connected to the outer periphery of the drill rod through hole 5, and all the dividing supports 4 and the drill rod through hole 5 are located in the same plane, arranged in a "cross" shape. The imaginary extension lines of each dividing support 4 intersect at the center of the drill rod through hole 5. The other end of each of the four dividing supports 4 is fixedly connected to one of the four branch pipe clamps 1. The extension direction of each dividing support 4 is the diameter direction of the branch pipe clamp 1 to which it is connected, and is perpendicular to the diameter formed by the line connecting the fastening pin 2 on the branch pipe clamp 1 and the opening and closing rotation shaft 3.

[0024] For a single U-shaped buried pipe, there are two separating support rods 4. The two separating support rods 4 are of equal length and located on the same straight line, which is the diameter direction of the drill rod perforation 5. One end of each of the two separating support rods 4 is securely connected to the outer periphery of the drill rod perforation 5 and lies in the same plane; the other end is connected to a branch pipe clamp 1. The extension direction of the separating support rod 4 is also the diameter direction of the connected branch pipe clamp 1, and is perpendicular to the diameter formed by the line connecting the fastening pin 2 on the branch pipe clamp 1 and the opening / closing rotation shaft 3.

[0025] The length of the dividing support rod 4 is determined according to the diameter of the target borehole. For a double U-shaped arrangement, it should be ensured that the sum H1 of the lengths of the two dividing support rods 4 located in the same diameter direction, the diameter of the drill rod through hole 5, and the outer diameters of the two branch pipe clamps 1 in that direction is less than the borehole diameter. For a single U-shaped arrangement, it should be ensured that the sum H2 of the lengths of the two dividing support rods 4, the diameter of the drill rod through hole 5, and the outer diameters of the two branch pipe clamps 1 is not greater than the borehole diameter.

[0026] The drill rod perforation 5 is a circular structure with an inner diameter 2-3 mm larger than the diameter of the drill rod used in construction, and is securely connected to all the separating support rods 4. When used for double U-shaped buried pipes, the drill rod perforation 5 is divided into four equal parts by the extension lines of the four separating support rods 4; when used for single U-shaped buried pipes, the drill rod perforation 5 is divided into two equal parts by the extension lines of the two separating support rods 4.

[0027] In actual construction, the appropriate device is selected according to the type of buried pipe (single U or double U). During pipe laying, the laying is paused at a predetermined position (it is recommended to install one of these devices every 5 meters, starting from the bottom of the buried pipe). The operator opens the fastening pin 2 on the branch pipe clamp 1, places the clamp onto the corresponding buried pipe branch, and then closes the fastening pin 2 to secure the clamp onto the branch. Subsequently, the drill rod is passed through the drill rod through hole 5 and connected to the previous drill rod section to continue the pipe laying operation. This installation process is repeated until the entire pipe laying is completed. This device, through the rigid support of the separating support rod 4, ensures that each buried pipe branch maintains a preset safe distance throughout the entire drilling depth, thereby reliably achieving the functions of anti-winding, anti-extrusion, and anti-thermal short-circuit protection.

[0028] This anti-self-entanglement device for ground source heat pump buried pipes uses independent branch pipe clamps 1 to fix each buried pipe branch and rigid dividing rods 4 to maintain a fixed spacing in the radial direction. This fundamentally eliminates the possibility of branch pipes entangled during the pipe laying process, and also avoids stress concentration and compression between pipes caused by entanglement. It effectively protects the buried pipe wall, prevents damage and leakage, and significantly improves construction safety and long-term system reliability. At the same time, it ensures that the heat exchange spacing between each buried pipe branch is always maintained as required by the design, preventing thermal short circuits caused by direct contact between pipes, thereby guaranteeing and optimizing the heat exchange performance of the ground source heat pump system. The branch pipe clamps 1 adopt an openable design, which is simple to operate and can be quickly installed and fixed on the buried pipe, greatly improving construction efficiency. The overall structure of the device is designed according to the drilling size to ensure smooth placement in the hole. By increasing or decreasing the number of branch pipe clamps 1 and dividing rods 4, it can flexibly adapt to different buried pipe forms such as single U-shaped and double U-shaped pipes, and has good versatility.

[0029] The above are merely preferred embodiments of this utility model. It should be noted that, for those skilled in the art, several modifications and improvements can be made without departing from the concept of this utility model, and these should also be considered within the scope of protection of this utility model. These will not affect the implementation effect of this utility model or the practicality of the patent.

Claims

1. A device for preventing self-entanglement of buried pipes in a ground source heat pump, characterized in that, include: Branch pipe clamp body, used to clamp and fix the buried pipe branch pipe; A fastening pin is provided on the branch pipe clamp body for opening, closing and locking the branch pipe clamp body; An opening and closing rotation shaft is provided on the branch pipe clamp body and is arranged opposite to the fastening pin. The branch pipe clamp body can rotate around the opening and closing rotation shaft to open and close. One end of the dividing support rod is fixedly connected to the branch pipe clamp body; The drill rod is drilled through a hole and fixedly connected to the other end of the partition support rod; The number of branch clamps is four or two, and the number of dividing rods is consistent with the number of branch clamps.

2. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 1, characterized in that, The branch pipe clamp is circular, and its inner wall diameter matches the outer wall size of the buried pipe branch.

3. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 1, characterized in that, The line connecting the fastening pin and the opening / closing rotation shaft constitutes the diameter of the branch pipe clamp body.

4. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 1, characterized in that, When there are four branch clamps, there are four dividing rods. The four dividing rods are coplanar with the drill rod through hole and are distributed in a "right cross" shape. The imaginary extension lines of the four dividing rods intersect at the center of the drill rod through hole.

5. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 4, characterized in that, The extension direction of each of the dividing support rods is the diameter direction of the branch pipe clamp to which it is connected, and is perpendicular to the line connecting the fastening pin on the branch pipe clamp and the opening and closing rotation axis.

6. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 1, characterized in that, When there are two branch pipe clamps, there are two dividing support rods. The two dividing support rods are coplanar with the drill rod through hole and located on the same straight line, which is the diameter of the drill rod through hole.

7. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 6, characterized in that, The extension direction of each of the dividing support rods is the diameter direction of the branch pipe clamp to which it is connected, and is perpendicular to the line connecting the fastening pin on the branch pipe clamp and the opening and closing rotation axis.

8. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 4 or 5, characterized in that, The sum H1 of the lengths of the two separating supports located in the same diametrical direction, the diameter of the drill rod hole, and the outer diameter of the two branch clamps in that direction is less than the diameter of the installation hole of the device.

9. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 6 or 7, characterized in that, The sum of the lengths of the two separating supports, the diameter of the drill hole, and the outer diameter of the two branch clamps, H2, is not greater than the diameter of the installation hole of the device.

10. The anti-self-entanglement device for buried pipes of ground source heat pumps according to claim 1, characterized in that, The drill rod has a circular hole with an inner diameter 2-3 mm larger than the diameter of the construction drill rod.

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