A connection device for high-purity fluid transfer lines
By using a design that combines a relief groove and a T-shaped sealing ring with a clamping element in the fluid transport pipeline connection device, an efficient and convenient pipeline connection is achieved, ensuring the sealing and stability of high-purity fluids and adapting to connection requirements of different shapes and directions.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- JIANGSU YIYUAN PRECISION TECH CO LTD
- Filing Date
- 2025-06-17
- Publication Date
- 2026-06-12
AI Technical Summary
Existing fluid transport pipeline connection devices require sequential docking during connection, resulting in low construction efficiency and inconvenient connection, making it difficult to guarantee the sealing and corrosion resistance of high-purity fluids.
The connecting pipe body has relief grooves and T-shaped sealing rings at both ends. Combined with clamping parts and semi-circular clamping sleeves, it forms a self-sealing effect through fluid pressure and is further sealed by clamping parts, adapting to different installation environments and connection shapes.
It improves the convenience and sealing of fluid transport pipeline connections, enhances the stability and quality of fluid transport, and adapts to pipeline connections of different shapes and orientations.
Smart Images
Figure CN224352574U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of fluid transport device structure, and in particular to a connection device for a high-purity fluid transport pipeline. Background Technology
[0002] In numerous industrial and scientific research applications, the supply of high-purity fluids is crucial, such as in the semiconductor, pharmaceutical, and chemical industries. To ensure the stability of high-purity gases or liquids during transportation, pipelines and their connecting devices must guarantee sealing and corrosion resistance. However, existing fluid transportation pipelines typically require sequential connections to ensure proper alignment and sealing at the connection points, which reduces construction efficiency and ease of connection. Utility Model Content
[0003] The purpose of this invention is to provide a connection device for high-purity fluid transportation pipelines, which can facilitate the connection between any two pipeline sections, improve construction efficiency, and ensure the convenience and sealing of the connection, so as to guarantee the quality of high-purity fluid transportation.
[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:
[0005] A connection device for a high-purity fluid transport pipeline includes a connecting pipe body, with both ends of the connecting pipe body connected to corresponding ports to be connected. A clearance groove is formed on the inner circumference of the end of the connecting pipe body and the port to be connected. A first sealing ring, a second sealing ring, and a clamping member are provided between the connecting pipe body and the port to be connected. The first sealing ring has a T-shaped cross-section, with both sides located in the corresponding clearance groove and the middle located between the connecting pipe body and the port to be connected. The second sealing ring abuts against the outer circumference of the connecting pipe body and the port to be connected and is clamped on the outer circumference by the clamping member.
[0006] By adopting the above technical solution, the main body of the connecting pipe is adaptable to different installation environments. It can be connected after the pipes on both sides are installed, or it can be set into different shapes to connect pipe structures in different directions or positions, thereby improving the flexibility of the fluid transportation route. The first sealing ring forms a self-sealing effect through fluid pressure at the end of the main body of the connecting pipe and the inner circumference of the port to be connected. The second sealing ring is tightened by the clamping member to achieve further sealing on the outside, which improves the sealing effect at the connection, ensures the convenience and sealing of the connection, and ultimately ensures the quality of high-purity fluid transportation.
[0007] Furthermore, the clamping member includes two semi-circular clamping sleeves, and the ends of the two semi-circular clamping sleeves are fastened together by fasteners.
[0008] By adopting the above technical solution, it is convenient to fix and tighten the semi-circular clamping sleeve, ensuring the sealing effect of the second sealing ring, and at the same time ensuring the connection strength between the connecting pipe body and the port to be connected.
[0009] Furthermore, the connecting pipe body end and the port to be connected are provided with flanges, and the two sides of the semi-circular clamping sleeve extend inward in a circumferential direction with side abutment rings, which abut against the outer side of the corresponding flange.
[0010] By adopting the above technical solution, while ensuring the sealing effect of the second sealing ring, the relative position between the main body of the connecting pipe and the port to be connected is limited, thereby improving the reliability of the connection.
[0011] Furthermore, the inner surface of the side abutment ring is a slope, and the slope direction makes its inner diameter larger in the inner direction.
[0012] By adopting the above technical solution, when the semi-circular clamping sleeve is tightened, its side abutment ring can push the corresponding end of the connecting pipe body and the port to be connected closer to each other, ensuring the sealing pressure at the connection position and improving the sealing performance of the connection.
[0013] Furthermore, the flange of the connecting pipe body end and the port to be connected has a slope on the side away from its outer end, and the direction of the slope is adapted to the corresponding slope of the abutment ring.
[0014] By adopting the above technical solution, the effect of the side abutment ring in pushing the corresponding end of the connecting pipe body and the port to be connected closer to each other is further improved, ensuring the sealing pressure at the connection position.
[0015] Furthermore, the second sealing ring has a T-shaped cross-section, with its two sides abutting against the outer periphery of the end of the connecting pipe body and the port to be connected, and its middle part located between the connecting pipe body and the port to be connected.
[0016] By adopting the above technical solution, the second sealing ring is positioned between the end of the connecting pipe body and the port to be connected, thereby improving the stability of the sealing effect.
[0017] Furthermore, the first sealing ring and the second sealing ring abut against each other.
[0018] By adopting the above technical solution, the first sealing ring and the second sealing ring abut against each other, which improves the stability of the seal and reduces the amount of fluid entering between the first sealing ring and the second sealing ring.
[0019] Furthermore, positioning grooves are provided at both ends of the semicircular clamping sleeve, and a buffer pad is provided between the two semicircular clamping sleeves. The buffer pad is located in the positioning groove, and the ends of the two semicircular clamping sleeves together with the buffer pad are fastened by fasteners.
[0020] By adopting the above technical solution, the semi-circular clamping sleeves are interconnected through buffer pads, which facilitates adjustment of the clamping tightness, improves the service life of the semi-circular clamping sleeves, and allows for easy adjustment as needed.
[0021] In summary, this utility model has the following beneficial effects:
[0022] The main body of the connecting pipe can adapt to different installation environments and can be connected after the pipes on both sides are installed. It can also be set in different shapes to connect pipe structures in different directions or positions, improving the flexibility of the fluid transport route. The first sealing ring forms a self-sealing effect through fluid pressure at the end of the main body of the connecting pipe and the inner circumference of the port to be connected. The second sealing ring is tightened by a clamping member to achieve further sealing on the outside.
[0023] The inner surface of the side abutment ring is beveled, which allows the side abutment ring to push the corresponding end of the connecting pipe body and the port to be connected closer together when the semi-circular clamp is tightened. This ensures the sealing pressure at the connection position, improves the sealing effect at the connection, ensures the convenience and sealing of the connection, and ultimately ensures the quality of high-purity fluid transportation. Attached Figure Description
[0024] Figure 1 This is a schematic diagram of the overall structure of a connection device for a high-purity fluid conveying pipeline according to this utility model.
[0025] Figure 2 This is a structural schematic diagram of another connection method of the connection device for a high-purity fluid transportation pipeline according to this utility model.
[0026] In the diagram, 0 is the port to be connected; 1 is the main body of the connecting pipe; 11 is the clearance groove; 12 is the flange; 2 is the first sealing ring; 3 is the second sealing ring; 4 is the semi-circular clamping sleeve; 41 is the fastening screw; 42 is the side abutment ring; and 43 is the buffer pad. Detailed Implementation
[0027] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.
[0028] A connection device for a high-purity fluid transport pipeline, such as Figure 1 and Figure 2 As shown, it includes a connecting pipe body 1, with both ends of the connecting pipe body 1 connected to corresponding ports 0 to be connected. The connecting pipe body 1 is adaptable to different installation environments, allowing for docking after the pipes on both sides are installed. It can also be configured with different shapes to connect pipe structures in different directions or positions, for example... Figure 1 straight lines or Figure 2 The right-angle connections in the fluid transport path improve the flexibility of the fluid transport route.
[0029] like Figure 1 As shown, a clearance groove 11 is formed on the inner circumference of the end of the connecting pipe body 1 and the port 0 to be connected. A first sealing ring 2, a second sealing ring 3 and a clamping member are provided between the connecting pipe body 1 and the port 0 to be connected. The first sealing ring 2 has a T-shaped cross section, with both sides located in the corresponding clearance groove 11 and the middle located between the connecting pipe body 1 and the port 0 to be connected. The first sealing ring 2 is elastic, so that it is first fixed in the end of the connecting pipe body 1 or in the port 0 to be connected during installation, and then the other side is installed. The second sealing ring 3 abuts against the outer circumference of the connecting pipe body 1 and the port 0 to be connected, and is clamped on the outer circumference by the clamping member.
[0030] The first sealing ring 2 forms a self-sealing effect through fluid pressure at the end of the connecting pipe body 1 and the inner circumference of the port 0 to be connected. The second sealing ring 3 is tightened by the clamping member to achieve further sealing on the outside, which improves the sealing effect at the connection, ensures the convenience and sealing of the connection, and ultimately ensures the quality of high-purity fluid transportation.
[0031] like Figure 1 As shown, the second sealing ring 3 also has a T-shaped cross-section, with its two sides abutting against the ends of the connecting pipe body 1 and the outer periphery of the port 0 to be connected, and its middle part located between the connecting pipe body 1 and the port 0 to be connected, thereby improving the stability of the sealing effect. The second sealing ring 3 is elastic, so that during installation, the second sealing ring 3 is first put on the outside of the connecting pipe body 1 or the port 0 to be connected, and then moved into place after installation. In this embodiment, the middle parts of the first sealing ring 2 and the second sealing ring 3 abut against each other, thereby improving the stability of the seal.
[0032] like Figure 1 As shown, the clamping component includes two semi-circular clamping sleeves 4, and the ends of the two semi-circular clamping sleeves 4 are fastened together by fasteners. In this embodiment, the fasteners include several bolts. Positioning grooves are opened at both ends of the semi-circular clamping sleeves 4, and a buffer pad 43 is provided between the two semi-circular clamping sleeves 4. The buffer pad 43 is located in the positioning groove. The ends of the two semi-circular clamping sleeves 4, together with the buffer pad 43, are fastened together by bolts to avoid compression deformation between the ends of the two semi-circular clamping sleeves 4.
[0033] like Figure 1 As shown, the end of the connecting pipe body 1 and the port to be connected 0 are integrally connected with a flange 12. The two sides of the semi-circular clamping sleeve 4 extend inward in the circumferential direction with side abutment rings 42, making its cross-section U-shaped. The side abutment rings 42 abut against the outer side of the corresponding flange 12.
[0034] In this embodiment, the inner surface of the side abutment ring 42 is a slope, and the slope direction makes its inner diameter larger; the end of the connecting pipe body 1 and the flange 12 of the port to be connected away from its outer end is a slope, and the slope direction is adapted to the corresponding slope of the abutment ring to ensure the sealing pressure at the connection position.
[0035] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.
Claims
1. A connection device for a high-purity fluid transport pipeline, characterized in that: The device includes a connecting pipe body, with both ends of the connecting pipe body connected to corresponding ports to be connected. A clearance groove is formed on the inner circumference of the end of the connecting pipe body and the port to be connected. A first sealing ring, a second sealing ring, and a clamping member are provided between the connecting pipe body and the port to be connected. The first sealing ring has a T-shaped cross-section, with both sides located in the corresponding clearance groove and the middle located between the connecting pipe body and the port to be connected. The second sealing ring abuts against the outer circumference of the connecting pipe body and the port to be connected and is clamped on the outer circumference by the clamping member.
2. The connecting device for a high-purity fluid conveying pipeline according to claim 1, characterized in that: The clamping component includes two semi-circular clamping sleeves, and the ends of the two semi-circular clamping sleeves are fastened together by fasteners.
3. The connection device for a high-purity fluid conveying pipeline according to claim 2, characterized in that: The main body of the connecting pipe and the port to be connected are provided with flanges, and the two sides of the semi-circular clamping sleeve have side abutment rings extending inward in the circumferential direction, and the side abutment rings abut against the outer side of the corresponding flange.
4. The connection device for a high-purity fluid conveying pipeline according to claim 3, characterized in that: The inner surface of the side abutment ring is inclined, and the direction of the inclined surface makes its inner diameter larger in the inner direction.
5. The connecting device for a high-purity fluid conveying pipeline according to claim 4, characterized in that: The flange of the connecting pipe body and the port to be connected has a slope on the side away from its outer end, and the direction of the slope is adapted to the corresponding slope of the abutment ring.
6. The connecting device for a high-purity fluid conveying pipeline according to claim 1, characterized in that: The second sealing ring has a T-shaped cross-section, with its two sides abutting against the outer periphery of the end of the connecting pipe body and the port to be connected, and its middle part located between the connecting pipe body and the port to be connected.
7. The connecting device for a high-purity fluid conveying pipeline according to claim 6, characterized in that: The first sealing ring and the second sealing ring abut against each other.
8. A connection device for a high-purity fluid transport pipeline according to claim 2 or 4, characterized in that: The two ends of the semicircular clamping sleeve are provided with positioning grooves, and a buffer pad is provided between the two semicircular clamping sleeves. The buffer pad is located in the positioning groove, and the ends of the two semicircular clamping sleeves together with the buffer pad are fastened by fasteners.