Leak-proof sealing connection pipe fitting in pipeline construction

By using a multi-layer sealing structure with a first and second sealing strip in pipeline construction, combined with quick-release screws and threaded connections, the problems of poor sealing effect and complicated disassembly and assembly are solved, achieving stability and rapid construction of pipeline connections.

CN224162201UActive Publication Date: 2026-04-24HENAN FANGYUAN CONSTR ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
HENAN FANGYUAN CONSTR ENG CO LTD
Filing Date
2025-06-06
Publication Date
2026-04-24

AI Technical Summary

Technical Problem

Traditional sealing pipe fittings have poor sealing performance during pipeline construction, are easily affected by external factors leading to leakage, and are complicated to disassemble and assemble, resulting in low construction efficiency.

Method used

The first sealing strip achieves axial sealing, while the second sealing strip forms a radial multi-layer sealing structure. Combined with quick-release screws and threaded connections, it ensures the stability of the connection and quick assembly/disassembly.

Benefits of technology

It effectively blocks media leakage, improves construction efficiency, ensures the long-term stability of the sealed connection, and resists vibration and pressure fluctuations.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model discloses a leakproof sealing connecting pipe fitting in pipeline construction, and particularly relates to the field of pipeline sealing, the leakproof sealing connecting pipe fitting comprises a fixing ring and two pipelines, the two sides of the fixing ring are respectively and fixedly provided with a threaded section, the two pipelines are respectively in threaded connection with the threaded sections, the two sides of the fixing ring are respectively and fixedly provided with a first sealing strip, and the first sealing strip is provided with a second sealing strip. And one ends of the two pipelines abut against one sides of the two first sealing strips correspondingly, connecting rings are fixedly installed on the two sides of the fixing ring correspondingly, and a plurality of fixing plates are fixedly installed on one side of each connecting ring. During use, operation is easy, the first sealing strip and the second sealing strip form multi-layer sealing, the sealing effect can be maintained even if part of the sealing strip is abraded, the leakage risk is reduced, the pipeline and the fixing ring are preliminarily fixed through threaded connection, the connecting ring and the pipeline are fastened through the quick-release screw, quick disassembly and assembly are achieved, efficiency is improved, and the service life of the pipeline is prolonged. And vibration and pressure fluctuation can be resisted, and long-term stability of sealing connection is ensured.
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Description

Technical Field

[0001] This utility model relates to the field of pipeline sealing, and more specifically, to leak-proof sealing connection pipe fittings used in pipeline construction. Background Technology

[0002] Piping systems are widely used in many fields such as modern industry, municipal construction, and building water supply and drainage to transport various fluids, such as gases, liquids (including water, oil, chemical raw materials, etc.), and fluids containing solid particles.1 In these applications, ensuring the sealing of the piping system is crucial to prevent fluid leakage from causing problems such as resource waste, environmental pollution, and safety accidents.

[0003] In pipeline construction, traditional sealing connection fittings often suffer from poor sealing performance and are susceptible to leakage due to external factors. At the same time, because a single sealing structure is difficult to maintain its sealing performance in the face of pressure fluctuations and vibration environments, and some connection methods are complicated to disassemble and assemble and have low construction efficiency, the pipeline system is at risk of media leakage, affecting the safety and stability of use.

[0004] Therefore, it is necessary to redesign the leak-proof sealing pipe fittings used in pipeline construction to address the aforementioned issues. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the embodiments of this utility model provide leak-proof sealing connection pipe fittings for pipeline construction.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A leak-proof sealing connection pipe fitting for pipeline construction includes a fixing ring and two pipes. Threaded sections are fixedly installed on both sides of the fixing ring, and the two pipes are threadedly connected to the threaded sections. First sealing strips are fixedly installed on both sides of the fixing ring, and one end of each of the two pipes abuts against one side of the two first sealing strips. Connecting rings are fixedly installed on both sides of the fixing ring, and multiple fixing plates are fixedly installed on one side of each connecting ring.

[0008] In a preferred embodiment, a plurality of second sealing strips are fixedly installed at equal intervals on the inner wall of each connecting ring, and the plurality of second sealing strips are respectively attached to the outer wall of the pipe corresponding to the position.

[0009] In a preferred embodiment, each of the fixing plates has a fixing hole, and each fixing hole is provided with a quick-release screw.

[0010] In a preferred embodiment, each of the pipes has a plurality of threaded holes spaced circumferentially on its outer wall, and quick-release screws are connected to the threaded holes corresponding to the positions of the holes.

[0011] In a preferred embodiment, each of the threaded segments is provided with a through hole.

[0012] In a preferred embodiment, the diameter of the threaded hole is equal to the diameter of the fixed hole.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model, by setting a first sealing strip, a second sealing strip and other devices, achieves axial sealing of the pipeline through the first sealing strip and forms a radial multi-layer sealing structure through the second sealing strip, which can effectively block the leakage of the medium from the end face and the circumferential gaps of the pipe wall. Even if some sealing strips are worn, good sealing performance can still be maintained, reducing the risk of pipeline leakage.

[0015] 2. This utility model uses devices such as quick-release screws and threaded sections to achieve initial fixation of the pipe and the fixing ring through threaded connection. The quick-release screws are used to tighten the connecting ring and the pipe axially. This not only ensures a tight connection by utilizing the mechanical engagement of the threads, but also enables quick disassembly and assembly through the quick-release structure, improving construction efficiency. At the same time, the quick-release screws can effectively resist the loosening of the connection caused by vibration and pressure fluctuations, ensuring the long-term stability of the sealed connection.

[0016] In summary, this utility model is simple to operate. The first and second sealing strips form a multi-layer seal, which can maintain the sealing effect even if there is partial wear, reducing the risk of leakage. The threaded connection initially fixes the pipe and the fixing ring, and the quick-release screws tighten the connecting ring and the pipe, which not only achieves quick disassembly and assembly to improve efficiency, but also resists vibration and pressure fluctuations, ensuring long-term stability of the sealing connection. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the leak-proof sealing connection pipe fitting for pipeline construction proposed in this utility model.

[0018] Figure 2 This is a schematic diagram of the threaded section of the leak-proof sealing connection pipe fitting proposed in this utility model for pipeline construction.

[0019] Figure 3 This is a schematic diagram of the inside of the fixing ring of the leak-proof sealing connection pipe fitting proposed in pipeline construction according to this utility model;

[0020] Figure 4 This is a schematic diagram of the internal connection ring of the leak-proof sealing connection pipe fitting proposed in this utility model for pipeline construction.

[0021] In the diagram: 1. Retaining ring; 2. Connecting ring; 3. Fixing plate; 4. Pipe; 5. Threaded hole; 6. Fixing hole; 7. Quick-release screw; 8. First sealing strip; 9. Threaded section; 10. Second sealing strip. Detailed Implementation

[0022] 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.

[0023] Reference Figure 1-4 A leak-proof sealing connection pipe fitting for pipeline construction includes a fixing ring 1 and two pipes 4. Threaded sections 9 are fixedly installed on both sides of the fixing ring 1, and the two pipes 4 are threadedly connected to the threaded sections 9. First sealing strips 8 are fixedly installed on both sides of the fixing ring 1, and one end of each of the two pipes 4 abuts against one side of the two first sealing strips 8, thereby sealing the pipes 4.

[0024] Connecting rings 2 are fixedly installed on both sides of the fixing ring 1, and multiple fixing plates 3 are fixedly installed on one side of each connecting ring 2.

[0025] Multiple second sealing strips 10 are fixedly installed at equal intervals on the inner wall of each connecting ring 2, and the multiple second sealing strips 10 are respectively attached to the outer wall of the pipe 4 at the corresponding position. These second sealing strips 10 radially compress the outer wall of the pipe to form a multi-layer sealing structure. Even if one of the sealing strips is slightly worn, the other sealing strips can still continue to play a role, effectively preventing the medium from leaking from the circumferential gap between the outer wall of the pipe and the connecting ring 2.

[0026] Each fixing plate 3 has a fixing hole 6, and each fixing hole 6 has a quick-release screw 7. Each pipe 4 has multiple threaded holes 5 circumferentially spaced on its outer wall, and the quick-release screw 7 is connected to the threaded hole 5 corresponding to the position. The connection between the quick-release screw 7 and the threaded hole 5 can fix the connecting ring 2 and the pipe 4 to prevent the pipe 4 from loosening.

[0027] Each threaded section 9 has a through hole that can communicate with the pipe 4, facilitating the flow of fluid media.

[0028] The diameter of threaded hole 5 is equal to the diameter of fixed hole 6.

[0029] In use, this invention involves rotating the pipe 4 to achieve a threaded connection with the threaded section 9. Relying on the mechanical engagement characteristics of the threads, the pipe 4 moves towards the fixing ring 1 during rotation. Once the pipe 4 is fully tightened, its end face abuts tightly against the first sealing strips 8 on both sides of the fixing ring 1. The first sealing strips 8 are compressed and undergo elastic deformation, filling the gap between the pipe end face and the fixing ring 1, preventing media leakage along the axial gap, and achieving axial sealing.

[0030] Multiple second sealing strips 10, evenly distributed on the inner wall of the connecting ring 2, will fit tightly against the outer wall of the pipe 4 after the pipe 4 is installed. These second sealing strips 10 radially compress the outer wall of the pipe to form a multi-layer sealing structure. Even if one of the sealing strips is slightly worn, the other sealing strips can still continue to function, effectively preventing the medium from leaking from the circumferential gap between the outer wall of the pipe and the connecting ring 2.

[0031] Each connecting ring 2 has a fixing hole 6 on the outer fixing plate 3. After the quick-release screw 7 passes through the fixing hole 6, it connects with the threaded hole 5 on the outer wall of the pipe 4. With the tightening force of the quick-release screw 7, the connecting ring 2 and the pipe 4 are axially fixed, thereby resisting the influence of vibration and pressure fluctuation on the threaded connection, avoiding loosening, and ensuring the stability of the sealing connection. At the same time, the special structure of the quick-release screw 7 facilitates quick disassembly and assembly, significantly improving construction efficiency.

[0032] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A leak-proof sealing connection pipe fitting for pipeline construction, comprising a fixing ring (1) and two pipes (4), characterized in that: The fixed ring (1) is fixedly installed with threaded sections (9) on both sides, and the two pipes (4) are threadedly connected to the threaded sections (9). The fixed ring (1) is fixedly installed with first sealing strips (8) on both sides, and one end of the two pipes (4) abuts against one side of the two first sealing strips (8). The fixed ring (1) is fixedly installed with connecting rings (2) on both sides, and multiple fixing plates (3) are fixedly installed on one side of each connecting ring (2).

2. The leak-proof sealing connection pipe fitting for pipeline construction according to claim 1, characterized in that: Multiple second sealing strips (10) are fixedly installed at equal intervals on the inner wall of each connecting ring (2), and the multiple second sealing strips (10) are respectively attached to the outer wall of the pipe (4) corresponding to the position.

3. The leak-proof sealing connection pipe fitting for pipeline construction according to claim 1, characterized in that: Each of the fixing plates (3) is provided with a fixing hole (6), and each fixing hole (6) is provided with a quick-release screw (7).

4. The leak-proof sealing connection pipe fitting for pipeline construction according to claim 1, characterized in that: Each of the pipes (4) has multiple threaded holes (5) spaced circumferentially on its outer wall, and quick-release screws (7) are connected to the threaded holes (5) corresponding to the positions.

5. The leak-proof sealing connection pipe fitting for pipeline construction according to claim 1, characterized in that: Each of the threaded segments (9) is provided with a through hole.

6. The leak-proof sealing connection pipe fitting for pipeline construction according to claim 4, characterized in that: The diameter of the threaded hole (5) is equal to the diameter of the fixed hole (6).