Leakage-proof device for buried pipeline joint of ground source heat pump

Abstract

The utility model discloses a ground source heat pump buried pipeline joint leakproof device, which belongs to the technical field of pipeline joint leakproof devices, and comprises a socketed pipe and a sealing ring arranged in the middle of the inner side of the socketed pipe, a positioning sleeve is fixed on the outer side of the socketed pipe, and the side edge of the positioning sleeve is connected with an air supply bag. The air supply bag is connected with a sealing ring in the sleeving pipe through an air conveying guide pipe, a locking component is installed on the side edge of the sleeving pipe and used for fixing the sleeving pipe and the pipeline, and the locking component extrudes the air supply bag to achieve inflation expansion of the sealing ring. According to the leakage-proof device for the buried pipeline joint of the ground source heat pump, the outer side of the flange of the pipeline joint is wrapped with the sealing ring, meanwhile, during assembling, the sealing ring adopts a follow-up inflation mode to improve the wrapping performance of the sealing ring and the pipeline joint, and abrasion of the sealing ring and the pipeline joint during assembling is reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of pipe joint leak preventers, specifically a ground source heat pump buried pipe joint leak preventer. Background Technology

[0002] As a highly efficient and environmentally friendly air conditioning and heating technology, the ground source heat pump system utilizes shallow underground geothermal resources for energy conversion. The underground heat energy is transferred to the heat pump unit through buried pipes, and the heat pump unit then provides hot water or cold air to meet the heating and cooling needs of the building. Therefore, in order to prevent leakage at the pipe joints, corresponding leak preventers are usually used.

[0003] For example, a leak-proof structure for a pipe joint, as disclosed in announcement number CN222011219U, includes a pipe 1, a movable cover fitted onto the surface of pipe 1, a pipe 2, flanges fixedly connected to one end of both pipe 1 and pipe 2, nuts movably installed in the fixing holes of the two flanges, connecting screws threaded onto the inner walls of the nuts, a movable base shell movably fitted onto the surface of pipe 2, the inner wall of the cover movably fitted onto the outer side of the movable base shell, a leak-stopping structure for water collection provided on the inner wall of the movable base shell, an extension pipe fixedly connected to the side of the movable base shell away from the cover, a fixing screw threaded onto the surface of the cover, and the cover threadedly connected to the outer side of the extension pipe via the fixing screw.

[0004] The existing technologies mentioned above have the following technical problems: When performing leak-proofing, the existing leak-proof structures use a sealing ring on the outside of the flange connection. However, to ensure a tight seal, the sealing ring needs to fit tightly with the connection. When a leak-proof structure is installed at the pipe joint, the sealing ring is prone to significant wear due to the large friction between the sealing ring and the pipe connection.

[0005] Therefore, we propose a ground source heat pump buried pipe joint leak preventer to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this utility model is to provide a leak-proof device for underground pipe joints of ground source heat pumps, so as to solve the problem mentioned in the background art that the existing leak-proof structures on the market, when performing leak-proof treatment, use a sealing ring on the outside of the flange connection. However, the sealing ring needs to fit tightly with the connection to ensure a seal. At this time, when the leak-proof structure is installed at the pipe joint, the sealing ring is prone to significant wear due to large friction between the sealing ring and the pipe connection.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a ground source heat pump buried pipe joint leak preventer, including a sleeve pipe and a sealing ring installed in the middle of the inner side of the sleeve pipe. A positioning sleeve is fixed on the outer side of the sleeve pipe, and an air supply bag is connected to the side of the positioning sleeve. The air supply bag is connected to the sealing ring inside the sleeve pipe through an air delivery conduit. A locking component is installed on the side of the sleeve pipe. The locking component is used to fix the sleeve pipe to the pipe. The locking component squeezes the air supply bag to inflate the sealing ring.

[0008] Preferably, the sealing ring has a hollow interior and is made of elastic rubber.

[0009] By adopting the above technical solution, the hollow structure inside the sealing ring facilitates the injection of airflow into the sealing ring.

[0010] Preferably, the air supply bag and the side of the positioning sleeve are welded together, and the airflow inside the air supply bag can enter the interior of the sealing ring through the air delivery conduit.

[0011] By adopting the above technical solution, when the locking component squeezes the air supply bag, the airflow inside the air supply bag can enter the interior of the sealing ring along the air delivery pipe, thereby causing the sealing ring to expand.

[0012] Preferably, the locking component includes a sealing cap, which is inserted into the inside of the sleeve tube. One end of the sealing cap extending out of the sleeve tube has a side lug fixed to it, and a plug rod is installed through the side lug. A clamping cap is screwed onto the plug rod.

[0013] By adopting the above technical solution, the sealing caps on both sides of the sleeve can be fixed by setting the compression cap.

[0014] Preferably, the outer wall of the sealing cap and the inner wall of the sleeve pipe are fitted together, and the end of the sealing cap abuts against the flange at the pipe joint.

[0015] By adopting the above technical solution, the end of the sealing cap comes into contact with the flange at the pipe joint, thereby tightening the flange and improving the stability of the flange at the pipe joint.

[0016] Preferably, the end of the plug rod on the circumferential side ear of the sealing cap is threadedly connected to the clamping cap, and the contact surface between the clamping cap and the side ear is set as a rough surface.

[0017] By adopting the above technical solution, the stability of the connection between the pressure cap and the side ear can be improved by using the rough surface of the contact surface between the pressure cap and the side ear.

[0018] Preferably, the locking component is a pressure cover plate, and the pressure cover plate and the sleeve are threaded together. After the pressure cover plate is screwed into the sleeve, the end of the pressure cover plate abuts against the flange at the pipe joint.

[0019] Compared with the prior art, the beneficial effects of this utility model are: the ground source heat pump buried pipe joint leak preventer, by wrapping a sealing ring on the outside of the flange of the pipe joint, and at the same time, by using subsequent air inflation during assembly, improves the sealing ring's fit with the pipe joint and reduces wear between the sealing ring and the pipe joint during assembly.

[0020] 1. An air supply bag is provided and installed on the sleeve pipe through a locking component, which can compress the air supply bag. After the air supply bag is compressed, the airflow inside enters the interior of the sealing ring through the air delivery pipe. The expansion of the sealing ring after inflation can tightly wrap with the flange of the pipe joint. The sealing ring adopts the method of subsequent inflation to improve the wrapping with the pipe joint and reduce the wear between the sealing ring and the pipe joint during assembly.

[0021] 2. A sealing cap is provided. The sealing cap is inserted into the inside of the sleeve to tighten the pipe flange. At the same time, the sealing cap can be fixed on the sleeve by using the plug rod and the clamping cap. The rough surface of the clamping cap can improve the contact friction between the clamping cap and the side lug. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the first embodiment of the locking component of this utility model;

[0023] Figure 2 This is a schematic diagram of the second embodiment of the locking component of this utility model;

[0024] Figure 3 This is a schematic diagram of the sealing cap and plug rod structure of this utility model;

[0025] Figure 4 This utility model Figure 4 Enlarged structural diagram at point A in the middle;

[0026] Figure 5 This is a schematic diagram of the sealing ring and pressure cover plate structure of this utility model.

[0027] In the diagram: 1. Connecting pipe; 2. Sealing ring; 3. Positioning sleeve; 4. Air supply bag; 5. Air delivery pipe; 6. Locking component; 601. Sealing cap; 602. Side lug; 603. Connecting rod; 604. Compression cap; 611. Pressure cover plate. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0029] Example 1:

[0030] Please see Figure 1 , Figure 3 and Figure 4 Existing leak-proof structures use sealing rings on the outside of flange connections for sealing. However, to ensure a tight seal, the sealing ring needs to fit snugly against the connection. When adding a leak-proof structure to the pipe joint, the sealing ring is prone to significant wear due to friction with the pipe connection. To address this technical problem, this embodiment discloses the following: a leak-proof device for a ground source heat pump buried pipe joint, including a sleeve 1 and a sealing ring 2 installed in the middle of the inner side of the sleeve 1. A positioning sleeve 3 is fixed to the outside of the sleeve 1. Furthermore, the side of the positioning sleeve 3 is connected to an air supply bag 4. The air supply bag 4 is connected to the sealing ring 2 inside the sleeve 1 through the air supply conduit 5. A locking component 6 is installed on the side of the sleeve 1. The locking component 6 is used to fix the sleeve 1 to the pipeline. The locking component 6 squeezes the air supply bag 4 to make the sealing ring 2 inflated. The inside of the sealing ring 2 is set as a hollow structure and the sealing ring 2 is made of elastic rubber. The side of the air supply bag 4 and the positioning sleeve 3 are welded and fixed. The airflow inside the air supply bag 4 can enter the inside of the sealing ring 2 through the air supply conduit 5.

[0031] When in use, insert the sleeve 1 onto the outside of the pipe joint. At this time, the sealing ring 2 on the inside of the sleeve 1 is fitted onto the outside of the flange. Then, when assembling the locking part 6 with the sleeve 1, the locking part 6 moves toward the center of the sleeve 1. After the locking part 6 moves, it can squeeze the air supply bag 4. After the air supply bag 4 is compressed, the airflow inside enters the interior of the sealing ring 2 through the air supply pipe 5. The expansion of the sealing ring 2 after inflation can tightly wrap with the flange of the pipe joint. The sealing ring 2 uses subsequent inflation to improve the wrapping with the pipe joint and reduce wear with the pipe joint during assembly.

[0032] The locking component 6 includes a sealing cap 601, which is inserted into the inside of the sleeve 1. A side lug 602 is fixed to one end edge of the sealing cap 601 that extends out of the sleeve 1, and a plug rod 603 is installed through the side lug 602. A clamping cap 604 is screwed onto the plug rod 603. The outer wall of the sealing cap 601 and the inner wall of the sleeve 1 fit together, and the end of the sealing cap 601 abuts against the flange at the pipe joint.

[0033] In this example, when using the locking component 6, the sealing cap 601 is inserted into the sleeve 1, and then the plug rod 603 is inserted into the side ears 602 on the left and right sealing caps 601. Finally, the clamping cap 604 is threaded onto the end of the plug rod 603 to complete the fixing between the sealing cap 601 and the sleeve 1.

[0034] The end of the plug rod 603 on the circumferential side ear 602 of the sealing cap 601 is threadedly connected to the clamping cap 604, and the contact surface between the clamping cap 604 and the side ear 602 is set as a rough surface.

[0035] The threaded connection between the clamping cap 604 and the end of the plug rod 603 facilitates the fixing of the plug rod 603, thereby fixing the sleeve 1 to the sealing caps 601 on the left and right sides. At the same time, the contact surface between the clamping cap 604 and the side ear 602 is a rough surface, which can improve the contact friction between the clamping cap 604 and the side ear 602.

[0036] Example 2:

[0037] The technical content disclosed in this embodiment differs from that in the first embodiment described above in that: this embodiment discloses a different locking component 6, such as... Figure 2 and Figure 5 As shown, the locking component 6 is configured as a pressure cover plate 611, and the pressure cover plate 611 and the sleeve 1 are threadedly connected. After the pressure cover plate 611 is screwed into the sleeve 1, the end of the pressure cover plate 611 abuts against the flange at the pipe joint.

[0038] In this example, the locking component 6 uses a pressure cover plate 611. Since the pressure cover plate 611 is threadedly connected to the sleeve 1, the pressure cover plate 611 can be screwed into the sleeve 1 simply by rotating it. When the pressure cover plate 611 moves toward the center of the sleeve 1, it can also press against the pipe joint flange through its end, and at the same time squeeze the air supply bag 4.

[0039] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0040] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A leak-proof device for a buried pipe joint of a ground source heat pump, comprising a sleeve pipe (1) and a sealing ring (2) installed in the middle of the inner side of the sleeve pipe (1), characterized in that: A positioning sleeve (3) is fixed on the outside of the sleeve (1), and an air supply bag (4) is connected to the side of the positioning sleeve (3). The air supply bag (4) is connected to the sealing ring (2) inside the sleeve (1) through the air supply conduit (5). A locking component (6) is installed on the side of the sleeve (1). The locking component (6) is used to fix the sleeve (1) to the pipeline. The locking component (6) squeezes the air supply bag (4) to realize the inflation of the sealing ring (2).

2. The ground source heat pump buried pipe joint leak preventer according to claim 1, characterized in that: The sealing ring (2) is hollow inside and is made of elastic rubber.

3. A leak-proof device for a buried pipe joint of a ground source heat pump according to claim 1, characterized in that: The side of the air supply bag (4) and the positioning sleeve (3) are welded together, and the airflow inside the air supply bag (4) can enter the interior of the sealing ring (2) through the air delivery pipe (5).

4. A leak-proof device for a buried pipe joint of a ground source heat pump according to claim 1, characterized in that: The locking component (6) includes a sealing cap (601), which is inserted into the inside of the sleeve tube (1). The sealing cap (601) has a side ear (602) fixed on one end edge extending out of the sleeve tube (1), and a plug rod (603) is installed through the side ear (602). A clamping cap (604) is screwed onto the plug rod (603).

5. A leak-proof device for a buried pipe joint of a ground source heat pump according to claim 4, characterized in that: The outer wall of the sealing cap (601) and the inner wall of the sleeve (1) fit together, and the end of the sealing cap (601) abuts against the flange at the pipe joint.

6. A leak-proof device for a buried pipe joint of a ground source heat pump according to claim 4, characterized in that: The end of the plug rod (603) on the circumferential side ear (602) of the sealing cap (601) is threadedly connected to the clamping cap (604), and the contact surface between the clamping cap (604) and the side ear (602) is set as a rough surface.

7. A leak-proof device for a buried pipe joint of a ground source heat pump according to claim 1, characterized in that: The locking component (6) is configured as a pressure cover plate (611), and the pressure cover plate (611) and the sleeve pipe (1) are threadedly connected. After the pressure cover plate (611) is screwed into the sleeve pipe (1), the end of the pressure cover plate (611) abuts against the flange at the pipe joint.

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