Pipeline sealing connection structure
By setting up multiple sealing rings and convex structures at the pipeline connections, the problem of poor sealing effect in the prior art is solved, and a more efficient pipeline sealing effect is achieved.
Patent Information
- Application Number
- CN202422280602.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-19
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-19
AI Technical Summary
The sealing effect in existing pipeline connections is poor and leaks are prone to occur.
A first sealing ring, a second sealing ring and a third sealing ring are arranged between the stepped connection end surfaces of the two pipelines to form three sealing structures. The sealing directions of the adjacent sealing structures are arranged at an angle, and the sealing effect is enhanced by the convex edges and the extrusion ring.
It improves the sealing performance of pipeline connections, reduces the risk of leakage of media at the connection, and enhances the stability and service life of the sealing ring.
Smart Images
Figure CN223090186U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of pipeline connection, and particularly to a pipeline sealing connection structure. Background Art
[0002] When pipelines are connected, they usually need to be sealed to prevent the medium transported inside the pipelines from leaking.
[0003] The existing pipeline sealing mainly uses sealing rings. A sealing groove is opened on the connecting end face of one of the pipelines, the sealing ring is placed in the sealing groove, and then the connecting end faces of the two pipelines are fastened by a clamp to press the sealing ring between the connecting end faces of the two pipelines to achieve pipeline sealing.
[0004] Although using a sealing ring can achieve pipeline sealed connection, the sealing effect is poor, and leakage is likely to occur at the pipeline connection. Utility Model Content
[0005] In order to improve the sealing performance of pipeline connection, this application provides a pipeline sealing connection structure.
[0006] The pipeline sealing connection structure provided by this application adopts the following technical solutions:
[0007] A pipeline sealing connection structure is arranged between the connecting end faces of two pipelines, and includes a first sealing ring, a second sealing ring, a third sealing ring and a fixed clamp. The connecting end faces of the two pipelines are stepped, and are successively a first stepped surface, a second stepped surface and a third stepped surface from inside to outside. A first sealing groove is opened on the first stepped surface, the first sealing ring is arranged in the first sealing groove, a second sealing groove is opened on the second stepped surface, the second sealing ring is arranged in the second sealing groove, a third sealing groove is opened on the third stepped surface, the third sealing ring is arranged in the third sealing groove, and the fixed clamp fastens the connecting end faces of the two pipelines.
[0008] By adopting the above technical solutions, a first sealing ring, a second sealing ring and a third sealing ring are arranged between the stepped connecting end faces of the two pipelines. The first sealing ring, the second sealing ring and the third sealing ring form three sealing structures, increasing the number of sealing structures and forming a multi-sealing blocking effect. The sealing directions of adjacent two sealing structures are arranged at an angle, reducing the leakage pressure of the medium between adjacent two sealing structures and improving the sealing performance of pipeline connection, making it difficult for the medium transported inside the pipeline to leak at the pipeline connection.
[0009] Optionally, the extended cross-section of the first sealing groove is rectangular and is entirely located on one side of the first stepped surface, and the first sealing ring is adapted to the first sealing groove.
[0010] By adopting the above technical solution, the first stepped surface can stably extrude the first sealing ring in the first sealing groove, making it difficult for the first stepped surface to leak.
[0011] Optionally, a ring-shaped convex rib is fixedly connected to the side surface of the first sealing groove parallel to the first stepped surface.
[0012] By adopting the above technical solution, the convex rib is extruded onto the first sealing ring, increasing the local pressure between the first sealing ring and the side wall of the first sealing groove, and the convex rib can further extrude the first sealing ring to tightly abut against the first stepped surface, thereby further improving the sealing performance of the first sealing ring.
[0013] Optionally, the extended cross-section of the convex rib is triangular.
[0014] By adopting the above technical solution, the triangular convex rib can maximize the local pressure between the first sealing ring and the side wall of the first sealing groove through its sharp side edges, further optimizing the sealing performance of the first sealing ring.
[0015] Optionally, the extended cross-section of the convex rib is semi-circular.
[0016] By adopting the above technical solution, the semi-circular convex rib increases the local pressure between the first sealing ring and the side wall of the first sealing groove, and at the same time, the semi-circular convex rib can reduce the damage to the first sealing ring caused by local pressure.
[0017] Optionally, the extended cross-section of the second sealing groove is rectangular and is entirely located on one side of the second stepped surface. The extended cross-section of the second sealing ring is circular, and the second sealing ring is filled with the second sealing groove under the extrusion of the second stepped surface.
[0018] By adopting the above technical solution, since the second sealing groove is entirely located on one side of the second stepped surface, and the second stepped surface can extrude the second sealing ring to fill the second sealing groove, the two pipelines can be closely attached at the second stepped surface under the condition of meeting the sealing requirements.
[0019] Optionally, the extended cross-section of the third sealing groove is rectangular, the third stepped surface is located in the middle of the third sealing groove, the extended cross-section of the third sealing ring is M-shaped, the opening of the third sealing ring faces the inside of the pipeline, and both sides of the opening are respectively abutted against the two side surfaces of the third sealing groove parallel to the third stepped surface.
[0020] By adopting the above technical solution, when the medium leaks into the third sealing groove, the leakage pressure of the medium can extrude both sides of the opening of the third sealing ring to further abut against the side surfaces of the third sealing groove, so that the third sealing ring with an M-shaped extended cross-section can improve the sealing performance of the third stepped surface by means of the leakage pressure of the medium.
[0021] Optionally, both top edges of the third sealing ring close to the outside of the pipeline are abutted against the side surface of the third sealing groove close to the outside of the pipeline. Two extrusion rings are symmetrically fixed on the side surface of the third sealing groove close to the outside of the pipeline. The two extrusion rings are respectively located on one side away from each other of the two top edges of the third sealing ring close to the outside of the pipeline. The two extrusion rings are extruded at the two top edges of the third sealing ring.
[0022] By adopting the above technical solution, the two extrusion rings can extrude the two top edges of the third sealing ring to swing towards each other, so that the opening of the third sealing ring is further opened, and the abutting state between the two sides of the opening of the third sealing ring and the two side surfaces of the third sealing groove is stabilized.
[0023] To sum up, the present application includes at least one of the following beneficial technical effects:
[0024] 1. By arranging the first sealing ring, the second sealing ring and the third sealing ring on the stepped connection end faces of the two pipelines, the sealing performance of the pipeline connection is improved;
[0025] 2. By arranging the convex ribs in the first sealing groove, the sealing performance of the first sealing ring is improved;
[0026] 3. By setting the extended section of the third sealing ring to be M-shaped, the third sealing ring can improve its own sealing performance by means of the leakage pressure of the medium. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 is a schematic structural diagram of Embodiment 1 of the present application;
[0028] Figure 2 is a cross-sectional view of the first sealing ring, the second sealing ring and the third sealing ring in Embodiment 1 of the present application for illustration;
[0029] Figure 3 is a cross-sectional view of Embodiment 2 of the present application for illustration of the semi-circular arc section of the convex rib.
[0030] DESCRIPTION OF THE REFERENCE NUMERALS:
[0031] 1, first sealing ring; 2, second sealing ring; 3, third sealing ring; 4, fixed clamp; 5, first stepped surface; 51, first sealing groove; 52, convex rib; 6, second stepped surface; 61, second sealing groove; 7, third stepped surface; 71, third sealing groove; 72, extrusion ring. DETAILED DESCRIPTION OF THE INVENTION
[0032] The following will further describe the present application in detail Figures 1-3 with reference to the accompanying
[0033] Embodiment 1 of the present application discloses a pipeline sealing connection structure. Embodiment 1:
[0034] Referring to Figure 1 and Figure 2 , a pipeline sealing connection structure is provided between the connecting end faces of two pipelines, including a first sealing ring 1, a second sealing ring 2, a third sealing ring 3 and a fixing clamp 4.
[0035] Referring to Figure 2 , the pipeline is in a circular tubular shape, and the connecting end faces of the two pipelines are in a stepped shape, and are successively the first stepped surface 5, the second stepped surface 6 and the third stepped surface 7 from inside to outside. Both the first stepped surface 5 and the third stepped surface 7 are perpendicular to the axial direction of the pipeline, and the second stepped surface 6 is parallel to the axial direction of the pipeline.
[0036] The first stepped surface 5 is provided with a first sealing groove 51. The first sealing groove 51 is in a circular ring shape and is coaxially provided with the pipeline. The extended cross section of the first sealing groove 51 is in a rectangular shape and is entirely located on one side of the first stepped surface 5. The first sealing ring 1 is in a circular ring shape and is adapted to the first sealing groove 51. The first sealing ring 1 is pressed tightly in the first sealing groove 51.
[0037] Three annular convex ribs 52 are integrally formed on the side surface of the first sealing groove 51 parallel to the first stepped surface 5. The convex ribs 52 are in a circular ring shape and are coaxially arranged with the first sealing groove 51. The extended cross section of the convex ribs 52 is in a triangular shape.
[0038] During use, the side surface of the first sealing groove 51 parallel to the first stepped surface 5 and the first stepped surface 5 press the first sealing ring 1, and the convex ribs 52 increase the local pressure of the first sealing ring 1, making it difficult to leave a gap between the first sealing ring 1 and the side wall of the first sealing groove 51, and increasing the extrusion force between the first sealing ring 1 and the first stepped surface 5, improving the sealing performance of the first stepped surface 5.
[0039] Referring to Figure 2 , the second stepped surface 6 is provided with a second sealing groove 61. The second sealing groove 61 is in a circular ring shape and is coaxially provided with the pipeline. The extended cross section of the second sealing groove 61 is in a rectangular shape and is entirely located on the side of the second stepped surface 6 away from the inside of the pipeline.
[0040] The second sealing ring 2 is in a circular ring shape and the extended cross section is in a circular shape. The second sealing ring 2 is located in the second sealing groove 61. The second sealing ring 2 is filled with the second sealing groove 61 under the extrusion of the second stepped surface 6. The cross-sectional shape of the second sealing ring 2 shown in the figure is the shape after the second sealing ring 2 is extruded.
[0041] During use, the second stepped surface 6 extrudes the second sealing ring 2 to fill the second sealing groove 61, making it difficult to leave a gap between the second sealing ring 2 and the second sealing groove 61, and improving the sealing performance of the second stepped surface 6.
[0042] Referring to Figure 2, a third sealing groove 71 is provided on the third stepped surface 7. The third sealing groove 71 is circular ring-shaped and is coaxially provided with the pipeline. The extended cross-section of the third sealing groove 71 is rectangular, and the third stepped surface 7 is located in the middle of the third sealing groove 71.
[0043] The third sealing ring 3 is circular ring-shaped and its extended cross-section is M-shaped. The third sealing ring 3 is located in the third sealing groove 71. The opening of the third sealing ring 3 faces the inside of the pipeline, and both sides of the opening of the third sealing ring 3 are respectively abutted against the two side surfaces of the third sealing groove 71 parallel to the third stepped surface 7.
[0044] Two extrusion rings 72 are symmetrically fixed on the side surface of the third sealing groove 71 close to the outside of the pipeline. The extrusion rings 72 are circular ring-shaped and their extended cross-sections are rectangular.
[0045] Both top edges of the third sealing ring 3 close to the outside of the pipeline are abutted against the side surface of the third sealing groove 71 close to the outside of the pipeline. Both top edges of the third sealing ring 3 close to the outside of the pipeline are located between the two extrusion rings 72, and the two extrusion rings 72 are extruded at the two top edges of the third sealing ring 3.
[0046] The fixed clamp 4 fastens the connecting end faces of the two pipelines.
[0047] During use, the two extrusion rings 72 extrude the two top edges of the third sealing ring 3 to swing towards each other, so that both sides of the opening of the third sealing ring 3 are respectively abutted against the two side surfaces of the third sealing groove 71 parallel to the third stepped surface 7. The leakage pressure of the medium further presses both sides of the opening of the third sealing ring 3 against the side wall of the third sealing groove 71. The third sealing ring 3 improves the sealing performance of the third stepped surface 7 by means of the leakage pressure of the medium.
[0048] The implementation principle of a pipeline sealing connection structure in an embodiment of the present application is: during use, the first sealing ring 1 improves the sealing performance of the first stepped surface 5 through extrusion with the convex rib 52, the second sealing ring 2 improves the sealing performance of the second stepped surface 6 under the extrusion of the second stepped surface 6, and the third sealing ring 3 improves the sealing performance of the third stepped surface 7 under the leakage pressure of the medium. Thus, through the three sealing structures of the first sealing ring 1, the second sealing ring 2, and the third sealing ring 3, the sealing performance of the pipeline connection is improved. Embodiment 2:
[0049] Referring to Figure 3 , the difference between this embodiment and Embodiment 1 is that the extended cross-section of the convex rib 52 is semi-circular arc-shaped.
[0050] The semi-circular arc-shaped convex rib 52 is not easy to damage the first sealing ring 1 and extends the service life of the first sealing ring 1.
[0051] The above are all preferred embodiments of the present application, and do not limit the protection scope of the present application. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application shall be covered within the protection scope of the present application.
Claims
1. A pipeline sealing connection structure is arranged between the connecting end faces of two pipelines, and is characterized in that: It includes a first sealing ring (1), a second sealing ring (2), a third sealing ring (3) and a fixing clamp (4). The connecting end faces of the two pipelines are stepped, and from the inside to the outside are a first stepped surface (5), a second stepped surface (6) and a third stepped surface (7) in sequence. A first sealing groove (51) is formed on the first stepped surface (5), and the first sealing ring (1) is arranged in the first sealing groove (51). A second sealing groove (61) is formed on the second stepped surface (6), and the second sealing ring (2) is arranged in the second sealing groove (61). A third sealing groove (71) is formed on the third stepped surface (7), and the third sealing ring (3) is arranged in the third sealing groove (71). The fixing clamp (4) fastens the connecting end faces of the two pipelines.
2. The pipe sealing connection structure according to claim 1, characterized in that: The extended cross-section of the first sealing groove (51) is rectangular and is entirely located on one side of the first stepped surface (5), and the first sealing ring (1) is adapted to the first sealing groove (51).
3. The pipeline sealing connection structure according to claim 2, characterized in that: A ring-shaped convex rib (52) is fixedly connected to the side surface of the first sealing groove (51) parallel to the first stepped surface (5).
4. The pipeline sealing connection structure according to claim 3, characterized in that: The extended cross-section of the convex rib (52) is triangular.
5. The pipeline sealing connection structure according to claim 3, characterized in that: The extended cross-section of the convex rib (52) is semi-circular arc-shaped.
6. The pipeline sealing connection structure according to claim 1, characterized in that: The extended cross-section of the second sealing groove (61) is rectangular and is entirely located on one side of the second stepped surface (6). The extended cross-section of the second sealing ring (2) is circular, and the second sealing ring (2) fills the second sealing groove (61) under the extrusion of the second stepped surface (6).
7. A pipeline sealing connection structure according to claim 1, characterized in that: The extended cross-section of the third sealing groove (71) is rectangular. The third stepped surface (7) is located in the middle of the third sealing groove (71). The extended cross-section of the third sealing ring (3) is M-shaped. The opening of the third sealing ring (3) faces the inside of the pipeline, and both sides of the opening are respectively abutted against the two side surfaces of the third sealing groove (71) parallel to the third stepped surface (7).
8. A pipeline sealing connection structure according to claim 7, characterized in that: Both top edges of the third sealing ring (3) close to the outside of the pipeline are abutted against the side surfaces of the third sealing groove (71) close to the outside of the pipeline. Two extrusion rings (72) are symmetrically fixedly arranged on the side surfaces of the third sealing groove (71) close to the outside of the pipeline. The two extrusion rings (72) are respectively located on one side where the two top edges of the third sealing ring (3) close to the outside of the pipeline are away from each other, and the two extrusion rings (72) are extruded at the two top edges of the third sealing ring (3).