A pipe joint sealing test device

Abstract

This utility model discloses a pipe joint sealing performance testing device, relating to the field of pipe joint sealing performance testing technology. It includes a sealing shell, which is fixedly fitted onto a pipe structure. The sealing shell consists of a main shell body, an internally threaded connecting pipe, and a pressure sensor. There are two symmetrically arranged main shell bodies, which are fixed together by bolts. The internally threaded connecting pipe and the pressure sensor are fixedly installed on the main shell body. Two sealing components are fitted onto the pipe structure and assembled together. Both sealing components are located inside the sealing shell. By setting up the sealing shell composed of the main shell body, the internally threaded connecting pipe, and the pressure sensor, an external air source can be connected through the internally threaded connecting pipe to fill the sealing shell with compressed gas. The pressure sensor monitors the pressure changes inside the sealing shell in real time, thereby accurately determining whether there is a leak at the pipe joint and the connection between the two conveying pipes.

Description

Technical Field

[0001] This utility model relates to the field of pipe joint sealing performance testing technology, and in particular to a pipe joint sealing performance testing device. Background Technology

[0002] In the fields of industrial production and infrastructure construction, pipeline systems play an important role in transporting various fluids (such as gases and liquids). As a key component connecting different pipelines in the pipeline system, the sealing performance of pipe joints is directly related to the operational safety and efficiency of the entire pipeline system.

[0003] Pipe joint sealing testing is a crucial step in ensuring the normal operation of pipeline systems. In practical applications, pipe joints are affected by various factors such as medium pressure, temperature changes, vibration, and installation techniques, which may lead to gaps, cracks, and ultimately fluid leaks. Leaks not only waste resources and pollute the environment but can also cause safety accidents. For example, leaks of flammable and explosive gases may lead to explosions, while leaks of toxic and harmful liquids can endanger human health and the ecological environment.

[0004] With the continuous development of industrial technology, the reliability requirements for pipeline systems are increasing, making the necessity of pipeline joint sealing performance testing increasingly prominent. On the one hand, before a pipeline system is put into use, rigorous sealing performance testing is required to ensure the installation quality of pipeline joints and avoid malfunctions during operation due to poor joint sealing. On the other hand, after long-term operation of the pipeline system, the sealing performance of joints may decline due to factors such as aging and corrosion. Regular sealing performance testing can promptly identify potential problems so that corresponding maintenance measures can be taken to ensure the safe and stable operation of the pipeline system. Therefore, researching and developing a pipeline joint sealing performance testing device has significant practical implications. Utility Model Content

[0005] The main purpose of this invention is to provide a pipe joint sealing test device, which can effectively solve the problems in the background art.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0007] A pipe joint sealing performance testing device includes a sealing shell, which is fixedly fitted onto a pipe structure. The sealing shell consists of a main shell body, an internally threaded connecting pipe, and a pressure sensor. There are two symmetrically arranged main shell bodies, which are fixed together by bolts. The internally threaded connecting pipe and the pressure sensor are fixedly installed on the main shell bodies. Two sealing assemblies are fitted onto the pipe structure and assembled together. The sealing assemblies are located inside the sealing shell. Each sealing assembly consists of a rubber ring, a metal support frame, an annular spring, an annular rubber sealing lip, and L-shaped rubber strips. The metal support frame is fixedly installed inside the rubber ring, the annular spring is also installed inside the rubber ring, the annular rubber sealing lip is fixedly installed on the inner wall of the rubber ring, and there are two symmetrically fixed L-shaped rubber strips on the outer wall of the rubber ring.

[0008] Preferably, the pipeline structure consists of a pipeline connector and two delivery pipelines. The pipeline connector fixes the two delivery pipelines together. The pipeline connector is located inside the two outer shell bodies on the sealed outer shell. The internally threaded connecting pipe is connected to an external air source through the pipeline.

[0009] Preferably, the inner end of the outer shell body on the sealing shell is provided with a sealing groove, and the two outer shell bodies are sleeved on the two conveying pipes of the pipeline structure.

[0010] Preferably, the inner end of the rubber ring on the sealing assembly is provided with an annular mounting groove, and the annular spring is installed in the annular mounting groove.

[0011] Preferably, the annular rubber sealing lip on the sealing assembly is fitted onto the conveying pipe of the pipeline structure, and the annular rubber sealing lip is tightly attached to the outer wall of the conveying pipe under the elastic force of the annular spring, and the four L-shaped rubber strips on the two sealing assemblies are interlocked together.

[0012] Preferably, the sealing component is located within a sealing groove formed at the inner end of the housing body.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] By setting up a sealed housing consisting of a main body, an internally threaded connecting pipe, and a pressure sensor, compressed gas can be injected into the sealed housing by connecting an external air source through the internally threaded connecting pipe. The pressure sensor monitors the pressure changes inside the sealed housing in real time, thereby accurately determining whether there is a leak at the pipe joint and the connection between the two delivery pipes. By setting up a sealing assembly consisting of a rubber ring, a metal support frame, a ring spring, a ring rubber sealing lip, and an L-shaped rubber strip, the metal support frame can enhance the structural strength of the rubber ring and prevent it from deforming during the detection process. The elastic force of the ring spring can keep the ring rubber sealing lip in close contact with the outer wall of the delivery pipe, forming a good sealing effect and preventing the detection gas from leaking from the gap between the sealing assembly and the delivery pipe. The L-shaped rubber strips on the two sealing assemblies are interlocked, which can further improve the sealing performance between the sealing assemblies, ultimately improving the accuracy of pipe joint sealing detection. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is an exploded view of the present invention;

[0017] Figure 3 This is a schematic diagram of the sealing assembly of this utility model;

[0018] Figure 4 This is a cross-sectional structural diagram of the rubber ring, metal support frame, and annular rubber sealing lip of this utility model.

[0019] Figure 5 For the present utility model Figure 4 A magnified view of point A.

[0020] In the diagram: 1. Sealing shell; 2. Pipeline structure; 3. Sealing assembly; 4. Shell body; 5. Sealing groove; 6. Internally threaded connecting pipe; 7. Pressure sensor; 8. Delivery pipeline; 9. Pipeline connector; 10. Rubber ring; 11. Metal support frame; 12. Annular spring; 13. Annular rubber sealing lip; 14. Annular mounting groove; 15. L-shaped rubber strip. Detailed Implementation

[0021] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] Please see Figures 1-5As shown, a pipe joint sealing performance testing device includes a sealing shell 1, which is fixedly fitted onto a pipe structure 2. The sealing shell 1 consists of a shell body 4, an internally threaded connecting pipe 6, and a pressure sensor 7. There are two shell bodies 4 arranged symmetrically, and the two shell bodies 4 are fixed together by bolts. The internally threaded connecting pipe 6 and the pressure sensor 7 are fixedly installed on the shell bodies 4. Two sealing components 3 are fitted onto the pipe structure 2 and are assembled together. The sealing components 3 are located inside the sealing shell 1. The sealing components 3 consist of a rubber ring 10, a metal support frame 11, a ring spring 12, a ring rubber sealing lip 13, and an L-shaped rubber strip 15. The metal support frame 11 is fixedly installed inside the rubber ring 10, the ring spring 12 is also installed inside the rubber ring 10, the ring rubber sealing lip 13 is fixedly installed on the inner wall of the rubber ring 10, and there are two L-shaped rubber strips 15 fixedly installed symmetrically on the outer wall of the rubber ring 10. The pipe structure 2 consists of a pipe connector 9 and two conveying pipes 8. The pipe connector 9 fixes the two conveying pipes 8 together. The pipe connector 9 is located inside the sealing shell 1. Inside the two outer shell bodies 4 on the outer shell 1, the internally threaded connecting pipe 6 is connected to an external air source through a pipeline. By setting up a sealed outer shell 1 consisting of the outer shell body 4, the internally threaded connecting pipe 6, and the air pressure sensor 7, compressed gas can be filled into the sealed outer shell 1 through the internally threaded connecting pipe 6 connected to an external air source. The air pressure sensor 7 monitors the air pressure changes inside the sealed outer shell 1 in real time, thereby accurately determining whether there is a leakage at the connection between the pipeline connector 9 and the two conveying pipelines 8. By setting up a sealing assembly 3 consisting of a rubber ring 10, a metal support frame 11, a ring spring 12, a ring rubber sealing lip 13, and an L-shaped rubber strip 15, the metal support frame 11 can enhance the structural strength of the rubber ring 10 and prevent it from deforming during the detection process. The elastic force of the ring spring 12 can keep the ring rubber sealing lip 13 in close contact with the outer wall of the conveying pipeline 8, forming a good sealing effect and preventing the detection gas from leaking from the gap between the sealing assembly 3 and the conveying pipeline 8. The L-shaped rubber strips 15 on the two sealing assemblies 3 are interlocked, which can further improve the sealing performance between the sealing assemblies 3, and ultimately improve the accuracy of the pipeline joint sealing performance detection.

[0023] Specifically, the inner end of the outer shell body 4 on the sealing shell 1 is provided with a sealing groove 5. The two outer shell bodies 4 are fitted onto the two conveying pipes 8 on the pipe structure 2. The inner end of the rubber ring 10 on the sealing assembly 3 is provided with an annular mounting groove 14. The annular spring 12 is installed in the annular mounting groove 14. The annular rubber sealing lip 13 on the sealing assembly 3 is fitted onto the conveying pipe 8 on the pipe structure 2. Under the elastic force of the annular spring 12, the annular rubber sealing lip 13 is tightly attached to the outer wall of the conveying pipe 8. The four L-shaped rubber strips 15 on the two sealing assemblies 3 are interlocked together. The sealing assembly 3 is located in the sealing groove 5 opened at the inner end of the outer shell body 4. During installation, the two sealing assemblies 3 are first fitted onto the two conveying pipes 8 of the pipe structure 2 respectively, so that the annular rubber sealing lip 13 on the sealing assembly 3 is fitted onto the conveying pipe 8. The annular spring 12 is located in the annular mounting groove 14 at the inner end of the rubber ring 10. The four L-shaped rubber strips 15 on the two sealing assemblies 3 are interlocked together. Next, the two outer shells 4 are respectively placed on the conveying pipe 8, so that the sealing component 3 is located in the sealing groove 5 at the inner end of the outer shell 4. Then, the two outer shells 4 are fixed together with bolts so that the pipe connector 9 is located inside the two outer shells 4. Then, the internal threaded connecting pipe 6 is connected to the external air source through the pipe, and the air pressure sensor 7 is fixed on the outer shell 4.

[0024] In use, an external air source is activated to inject compressed gas into the sealed housing 1 through the internal threaded connecting pipe 6. When the air pressure inside the sealed housing 1 reaches a certain value, the injection of compressed gas into the sealed housing 1 is stopped. At the same time, the air pressure sensor 7 monitors the air pressure changes inside the sealed housing 1 in real time. If the air pressure drops, it indicates a leak at the connection between the pipe connector 9 and the two delivery pipes 8; otherwise, the seal is good. The metal support frame 11 can enhance the structural strength of the rubber ring 10 and prevent deformation during detection. The elastic force of the ring spring 12 keeps the ring rubber sealing lip 13 in close contact with the outer wall of the delivery pipe 8, preventing the detection gas from leaking from the gap between the sealing assembly 3 and the delivery pipe 8. The L-shaped rubber strips 15 are interlocked to improve the sealing performance between the sealing assemblies 3 and ensure the accuracy of the detection.

[0025] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A pipe joint sealing performance testing device, characterized in that: The system includes a sealing shell (1), which is fixedly fitted onto the pipe structure (2). The sealing shell (1) consists of a shell body (4), an internally threaded connecting pipe (6), and a pressure sensor (7). There are two shell bodies (4) arranged symmetrically, and the two shell bodies (4) are fixedly installed together by bolts. The internally threaded connecting pipe (6) and the pressure sensor (7) are fixedly installed on the shell body (4). Two sealing components (3) are fitted onto the pipe structure (2), and the two sealing components (3) are assembled together. The sealing assembly (3) is located inside the sealing shell (1). The sealing assembly (3) consists of a rubber ring (10), a metal support frame (11), an annular spring (12), an annular rubber sealing lip (13), and an L-shaped rubber strip (15). The metal support frame (11) is fixedly installed inside the rubber ring (10). The annular spring (12) is also installed inside the rubber ring (10). The annular rubber sealing lip (13) is fixedly installed on the inner wall of the rubber ring (10). There are two L-shaped rubber strips (15) that are symmetrically fixedly installed on the outer wall of the rubber ring (10).

2. The pipe joint sealing performance testing device according to claim 1, characterized in that: The pipeline structure (2) consists of a pipeline connector (9) and two conveying pipelines (8). The pipeline connector (9) fixes the two conveying pipelines (8) together. The pipeline connector (9) is located inside the two outer shell bodies (4) on the sealed outer shell (1). The internal threaded connecting pipe (6) is connected to an external air source through the pipeline.

3. The pipe joint sealing performance testing device according to claim 2, characterized in that: The inner end of the outer shell body (4) on the sealed outer shell (1) is provided with a sealing groove (5), and the two outer shell bodies (4) are sleeved on the two conveying pipes (8) on the pipe structure (2).

4. The pipe joint sealing performance testing device according to claim 3, characterized in that: The inner end of the rubber ring (10) on the sealing assembly (3) is provided with an annular mounting groove (14), and the annular spring (12) is installed in the annular mounting groove (14).

5. The pipe joint sealing performance testing device according to claim 4, characterized in that: The annular rubber sealing lip (13) on the sealing assembly (3) is fitted onto the conveying pipe (8) on the pipe structure (2). The annular rubber sealing lip (13) is tightly attached to the outer wall of the conveying pipe (8) under the elastic force of the annular spring (12). The four L-shaped rubber strips (15) on the two sealing assemblies (3) are interlocked together.

6. The pipe joint sealing performance testing device according to claim 5, characterized in that: The sealing component (3) is located in the sealing groove (5) opened at the inner end of the outer shell body (4).

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