Double-U-shaped underground heat exchanger

Abstract

The utility model discloses a double-U-shaped underground heat exchanger, and relates to the technical field of heat exchangers. The device comprises a tank body and a U-shaped pipe assembly, the U-shaped pipe assembly is installed in the tank body, the U-shaped pipe assembly comprises a U-shaped pipeline, an installation plate is fixedly arranged on the inner wall of the tank body, the U-shaped pipeline is inserted into the installation plate in a penetrating mode, annular plates are fixedly arranged on the outer sides of the two ends of the U-shaped pipeline, and the annular plates are fixedly arranged on the outer sides of the two ends of the U-shaped pipeline. A first sealing gasket is mounted on the side, close to the mounting plate, of the annular plate, threaded rings are arranged on the outer sides of the two ends of the U-shaped pipeline, threaded buckles are mounted on the outer sides of the threaded rings, and second sealing gaskets are fixedly arranged at the ends, close to the mounting plate, of the threaded buckles. According to the U-shaped pipeline assembly, the mounting plate, the sealing gaskets, the annular plate, the threaded ring, the threaded buckle, the sealing gasket II and the like are arranged and matched with one another, so that the U-shaped pipeline assembly can be conveniently disassembled and assembled, and subsequent disassembly, maintenance and replacement are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of heat exchangers, in particular to a double U-shaped buried heat exchanger. Background Art

[0002] The Double U-shaped underground heat exchanger is a highly efficient geothermal energy utilization device. It consists of two U-shaped pipes buried underground to utilize the relatively constant underground temperature for heat exchange. Its operating principle is to circulate a heat carrier (water or antifreeze) through the pipes, absorbing or releasing heat to achieve heating or cooling effects. This heat exchanger is widely used in residential heating, geothermal air conditioning, and industrial heat recovery, offering advantages such as energy conservation, environmental protection, low operating costs, and stable temperature.

[0003] However, in existing equipment, when a single U-shaped pipe is blocked, the fluid circulation will be interrupted, resulting in a decrease in heat exchange efficiency and an increase in pressure, which may cause system failure and increase maintenance costs. However, it is inconvenient to disassemble and replace a single U-shaped pipe. To address the above problems, the inventors proposed a double U-shaped buried heat exchanger to solve the above problems. Utility Model Content

[0004] In order to solve the problem of inconvenience in replacing a single U-shaped pipe, the purpose of the utility model is to provide a double U-shaped buried heat exchanger.

[0005] The cam is fixed on the upper surface of the U-tube, and the cam is fixed on the lower surface of the U-tube.

[0006] Preferably, a fixing plate is installed in the tank body, a connecting plate is installed and connected to the outside of the U-shaped pipe, the U-shaped pipe is detachable on the outside of the connecting plate, symmetrically distributed screws are installed on the outside of the fixing plate, and the screw threads are inserted through the connecting plate.

[0007] Preferably, flanges are installed at the ends of the hot medium inlet pipe, hot medium outlet pipe, cold medium outlet pipe and cold medium inlet pipe, and the No. 1 sealing head and No. 2 sealing head are both installed and connected to the tank body through flanges and bolts.

[0008] Preferably, baffles are staggeredly provided on the inner wall of the tank body, and a support frame is installed on the outer side of the tank body.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] 1. In the present invention, by arranging the mounting plate, No. 1 sealing gasket, annular plate, thread ring, thread buckle and No. 2 sealing gasket and other structures to cooperate with each other, the U-shaped pipe assembly can be easily disassembled and installed, thereby facilitating subsequent disassembly, maintenance and replacement;

[0011] 2. In this new type of use, by setting up connecting plates, fixing plates and screws and other structures to cooperate with each other, the U-shaped pipe in the U-shaped pipe assembly can be disassembled, thereby facilitating the disassembly and replacement of a single U-shaped pipe, avoiding the interruption of fluid circulation when a single U-shaped pipe is blocked, resulting in a decrease in heat exchange efficiency and an increase in pressure, which may cause system failure and increase maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0013] Figure 1 This is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 It is a side view schematic diagram of the overall structure of the utility model;

[0015] Figure 3 This is a schematic cross-sectional view of the tank body and its connection structure of the utility model;

[0016] Figure 4 For this utility model Figure 3 A in the middle is an enlarged structural diagram;

[0017] Figure 5 This is a schematic diagram of the U-shaped tube assembly and its connection structure of the utility model;

[0018] Figure 6 For this utility model Figure 5 Enlarged structural diagram at point B in the middle.

[0019] In the figure: 1. Tank body; 11. Sealing head No. 1; 12. Sealing head No. 2; 13. Hot medium inlet pipe; 14. Hot medium outlet pipe; 15. Cold medium outlet pipe; 16. Cold medium inlet pipe; 17. Head partition; 18. Baffle; 19. Support frame; 2. U-shaped pipe assembly; 21. U-shaped pipe; 22. Mounting plate; 23. No. 1 sealing gasket; 24. Ring plate; 25. Threaded ring; 26. Threaded buckle; 27. No. 2 sealing gasket; 3. Connecting plate; 31. Fixing plate; 32. Screw. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0021] Example: Figure 1-6 As shown, the utility model provides a double U-shaped buried heat exchanger, including a tank body 1 and a U-shaped tube assembly 2, the U-shaped tube assembly 2 is installed in the tank body 1, the U-shaped tube assembly 2 includes a U-shaped pipe 21, the inner wall of the tank body 1 is fixed with a mounting plate 22, the U-shaped pipe 21 is inserted into the mounting plate 22, and an annular plate 24 is fixed on the outer side of both ends of the U-shaped pipe 21. A No. 1 sealing gasket 23 is installed on one side of the annular plate 24 close to the mounting plate 22, and a threaded ring 25 is provided on the outer side of both ends of the U-shaped pipe 21. A threaded buckle 26 is installed on the outer side of the threaded ring 25, and a No. 2 sealing gasket 27 is fixed on one end of the threaded buckle 26 close to the mounting plate 22. By removing the threaded buckle 26, the U-shaped tube assembly 2 can be easily disassembled and replaced; the threaded buckle 26 and the annular plate 24 are located on both sides of the mounting plate 22, and the cold medium outlet pipe 15 and the cold medium outlet pipe 15 are installed on the outer side of the tank body 1. The medium inlet pipe 16 and the hot medium inlet pipe 13 are connected to the heat source (such as a heating system or a heat pump, etc.), and the hot medium outlet pipe 14 is connected to the heat medium return system to return to the circulation loop of the heat source. The cold medium inlet pipe 16 is usually connected to the equipment or system that needs to be cooled, such as a cooling water circulation system or a refrigeration system, and the cold medium outlet pipe 15 is connected to the cooling medium return system to return to the cooling equipment or system. A No. 1 sealing head 11 is installed at the end of the tank body 1 close to the mounting plate 22, and a No. 2 sealing head 12 is installed at the end of the tank body 1 away from the No. 1 sealing head 11. A head partition 17 is fixed in the No. 1 sealing head 11, which can isolate the liquid in the No. 1 sealing head 11, so that the hot medium circulates in the U-shaped pipe 21 to facilitate heat exchange. A hot medium inlet pipe 13 and a hot medium outlet pipe 14 are installed on the outside of the No. 1 sealing head 11.

[0022] A fixing plate 31 is installed in the tank body 1, and a connecting plate 3 is installed and connected to the outside of the U-shaped pipe 21. The U-shaped pipe 21 is detachable on the outside of the connecting plate 3. Screws 32 are symmetrically distributed and installed on the outside of the fixing plate 31. The screws 32 are threaded and inserted into the connecting plate 3.

[0023] By adopting the above technical solution, it is convenient to disassemble and replace a single U-shaped pipe 21.

[0024] Flanges are installed at the ends of the hot medium inlet pipe 13, the hot medium outlet pipe 14, the cold medium outlet pipe 15 and the cold medium inlet pipe 16.

[0025] By adopting the above technical solution, it is convenient to connect the hot medium inlet pipe 13, the hot medium outlet pipe 14, the cold medium outlet pipe 15 and the cold medium inlet pipe 16 with the external pipeline.

[0026] The No. 1 sealing head 11 and the No. 2 sealing head 12 are both mounted and connected to the tank body 1 through flanges and bolts.

[0027] By adopting the above technical solution, it is convenient to install and disassemble the No. 1 sealing head 11 and the No. 2 sealing head 12.

[0028] Baffles 18 are staggeredly provided on the inner wall of the tank body 1 .

[0029] By adopting the above technical solution, the baffle 18 can make the cold medium flow in the tank body 1, increase the contact time with the U-shaped pipe 21, and improve the heat exchange efficiency.

[0030] A support frame 19 is installed on the outside of the tank body 1.

[0031] By adopting the above technical solution, the support frame 19 can facilitate the installation of the entire device.

[0032] Working principle: First, connect the hot medium inlet pipe 13 to the heat source (such as a heating system or a heat pump, etc.), and the hot medium outlet pipe 14 is connected to the hot medium return system to return to the circulation loop of the heat source. The cold medium inlet pipe 16 is usually connected to the equipment or system that needs to be cooled, such as a cooling water circulation system or a refrigeration system, and the cold medium outlet pipe 15 is connected to the cooling medium return system to return to the cooling equipment or system. Then the hot medium enters the No. 1 sealing head 11 through the hot medium inlet pipe 13, and then enters the inner wall of the pipe through a section of the U-shaped pipe 21. The cold medium enters the tank body 1 through the cold medium inlet pipe 16. At this time, the U-shaped The hot medium in the pipe 21 contacts the cold medium in the tank body 1, thereby completing the heat exchange. When a U-shaped pipe 21 is blocked and damaged, the No. 1 sealing head 11 and the No. 2 sealing head 12 can be removed, and then the threaded buckle 26 can be removed, and then the screw 32 can be removed. Then the U-shaped tube assembly 2 can be removed from the tank body 1. After the disassembly is completed, the damaged U-shaped pipe 21 can be removed from the connecting plate 3, and then the damaged U-shaped pipe 21 can be replaced. This avoids the interruption of fluid circulation when a single U-shaped pipe 21 is blocked, resulting in a decrease in heat exchange efficiency and an increase in pressure, which may cause system failure and increase maintenance costs.

[0033] Obviously, those skilled in the art may make various modifications and variations to the present invention without departing from the spirit and scope of the present invention. Thus, if such modifications and variations fall within the scope of the claims of the present invention and their equivalents, the present invention is intended to include such modifications and variations.

Claims

1. A double U-shaped buried heat exchanger, comprising a tank (1) and a U-shaped tube assembly (2), characterized in that: The U-shaped tube assembly (2) is installed in the tank body (1), and the U-shaped tube assembly (2) includes a U-shaped pipe (21). A mounting plate (22) is fixedly provided on the inner wall of the tank body (1). The U-shaped pipe (21) is inserted into the mounting plate (22). An annular plate (24) is fixedly provided on the outer sides of both ends of the U-shaped pipe (21). A No. 1 sealing gasket (23) is installed on the side of the annular plate (24) close to the mounting plate (22). Threaded rings (25) are provided on the outer sides of both ends of the U-shaped pipe (21). A threaded buckle (26) is installed on the outer side of the threaded ring (25). A No. 2 sealing gasket (27) is fixedly provided on the end of the threaded buckle (26) close to the mounting plate (22). The threaded buckle (26) and the annular plate (24) are located on both sides of the mounting plate (22); a cold medium outlet pipe (15) and a cold medium inlet pipe (16) are installed on the outside of the tank body (1); a No. 1 sealing head (11) is installed on the end of the tank body (1) close to the mounting plate (22); a No. 2 sealing head (12) is installed on the end of the tank body (1) away from the No. 1 sealing head (11); a head partition (17) is fixedly provided inside the No. 1 sealing head (11); and a hot medium inlet pipe (13) and a hot medium outlet pipe (14) are installed on the outside of the No. 1 sealing head (11).

2. A double U-shaped buried heat exchanger according to claim 1, characterized in that: A fixing plate (31) is installed in the tank body (1), a connecting plate (3) is installed and connected to the outside of the U-shaped pipe (21), the U-shaped pipe (21) is detachable on the outside of the connecting plate (3), and symmetrically distributed screws (32) are installed on the outside of the fixing plate (31), and the screws (32) are threadedly inserted into the connecting plate (3).

3. The double U-shaped buried heat exchanger according to claim 1, characterized in that: Flanges are installed at the ends of the hot medium inlet pipe (13), the hot medium outlet pipe (14), the cold medium outlet pipe (15) and the cold medium inlet pipe (16).

4. The double U-shaped underground heat exchanger according to claim 1, characterized in that: The No. 1 sealing head (11) and the No. 2 sealing head (12) are both mounted and connected to the tank body (1) via flanges and bolts.

5. The double U-shaped underground heat exchanger according to claim 1, characterized in that: Baffles (18) are staggeredly provided on the inner wall of the tank body (1).

6. The double U-shaped underground heat exchanger according to claim 1, characterized in that: A support frame (19) is installed on the outside of the tank body (1).

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