Leak-proof flange
By designing multiple sealing structures and accurate bolts in the flange, the problem of leakage of traditional flanges in harsh environments is solved, and efficient sealing and simplified installations are achieved, reducing costs.
Patent Information
- Application Number
- CN202411609688.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-12
- Publication Date
- 2025-01-24
AI Technical Summary
Traditional flanges are prone to leakage problems in long-term operation or harsh environments, and the existing improvement solutions have limitations such as complex structure, difficult installation and high cost.
Designed a flange of anti -leakage, with multiple sealing structures, including the rubber plug ring at both ends of the bolt holes, the sealing cushion between the flanges, and the sealing ring between the import ring and the pipeline. The design of the ring enables the flange to easily set it on the end of the pipeline.
The efficient sealing performance of flanges can be effectively prevent leakage even in the environment of high pressure, high temperature or corrosive media, and simplify the installation process and reduce costs.
Smart Images
Figure CN119353518A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the field of flanges, in particular to a leakage-proof flange. Background Art
[0002] In the pipeline system, flanges are important components for connecting pipelines, and their sealing performance is directly related to the safety and stability of the entire system. Although traditional flange connection methods, such as bolt fastening with metal gaskets, can meet the connection requirements to a certain extent, they are prone to leakage when operating for a long time or facing harsh environments such as high pressure, high temperature, and corrosive media. Leakage not only leads to waste of media, but may also cause serious consequences such as environmental pollution and safety accidents.
[0003] In order to solve this problem, the industry has been constantly exploring and improving the sealing structure and connection method of flanges. However, existing improvement schemes often have limitations such as complex structure, difficult installation, and high cost, making it difficult to widely promote them in practical applications. Therefore, it is particularly important to develop a leakage-proof flange with simple structure, easy installation, and reliable sealing performance. Summary of the invention
[0004] The object of the present invention is to provide a leakage-proof flange to solve the problems raised in the above background technology.
[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a leakage-proof flange, comprising a flange body, which is sleeved and welded on the end of a pipe, a surface of the flange body is provided with bolt holes, both ends of the bolt holes are embedded with rubber plug rings, an inner ring opening of the flange body is provided with a pipe assembly groove for sleeved the pipe, an inner ring opening of the flange body is integrally formed with an introduction ring for inserting into the pipe, and a rubber covering ring is fixed on the surface of the flange body, which is sleeved on the welding point between the flange body and the pipe.
[0006] Preferably, the bolt hole is an I-shaped circular hole, and rubber plug rings are inserted and fixed at both ends of the bolt hole. The rubber plug ring is a convex ring, and one end of the rubber plug ring protrudes from the bolt hole.
[0007] Preferably, a second embedding groove is formed on a side of the flange body away from the introduction ring. The second embedding groove is an annular groove. A sealing gasket is fixed inside the second embedding groove. The sealing gasket is an annular plate structure. The thickness of the sealing gasket is greater than the depth of the second embedding groove.
[0008] Preferably, when the two flange bodies are assembled, the bolt holes on the surfaces of the two flange bodies are penetrated by bolts, the rubber plug ring is clamped between the flange body and the bolt to generate elastic deformation, and the sealing gasket is clamped between the two flange bodies to generate elastic deformation.
[0009] Preferably, the pipe assembly groove is an annular groove, and after one end of the pipe is inserted into the pipe assembly groove, the outer annular surface of the pipe and the surface of the flange body are welded.
[0010] Preferably, the rubber covering ring is a circular ring plate with an "L"-shaped cross-section, the end of the rubber covering ring away from the flange body is a truncated cone ring, the inner ring diameter of one end of the rubber covering ring is smaller than the outer diameter of the pipe, and the rubber covering ring covers the outside of the welding seam between the flange body and the pipe.
[0011] Preferably, the introduction ring is in a circular tube structure, the outer diameter of the introduction ring is equal to the inner diameter of the pipeline, the outer ring surface of the introduction ring is provided with an embedding groove one, the embedding groove one is an annular groove, a sealing ring is fixed inside the embedding groove one, the outer diameter of the sealing ring is larger than the outer diameter of the introduction ring, after the introduction ring is inserted into the pipeline, the sealing ring is clamped between the introduction ring and the pipeline to produce elastic deformation.
[0012] Compared with the prior art, the present invention has the following beneficial effects:
[0013] The leak-proof flange proposed in the present invention realizes a multiple sealing structure through the rubber plug rings at both ends of the bolt holes, the sealing gaskets between the flange body, and the sealing ring between the introduction ring and the pipeline. This design greatly enhances the sealing performance of the flange and can effectively prevent leakage even in harsh environments such as high pressure, high temperature or corrosive media. The pipeline assembly groove and introduction ring design on the flange body enable the flange to be easily mounted on the end of the pipeline and fixed by welding. At the same time, the setting of the rubber covering ring not only protects the welding seam from external moisture erosion, but also simplifies the installation process and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a schematic diagram of the structure of the present invention;
[0015] Figure 2 This is a schematic diagram of the connection structure between the flange body and the sealing gasket of the present invention;
[0016] Figure 3 It is a front view of the structure of the present invention;
[0017] Figure 4 for Figure 3 Structural cross-section view at AA in the middle;
[0018] Figure 5 for Figure 4 A schematic diagram of the structure enlargement in the middle;
[0019] Figure 6 This is a schematic diagram of the structure after two groups of pipelines with flange bodies installed are connected in the present invention;
[0020] Figure 7 for Figure 6 Front view of the middle structure;
[0021] Figure 8 for Figure 7 Middle structure section view;
[0022] Fig. 9 for Figure 8 Enlarged schematic diagram of the structure at point B in the middle.
[0023] In the figure: flange body 1, bolt hole 2, rubber plug ring 3, pipe assembly groove 4, introduction ring 5, embedding groove 1 6, sealing ring 7, embedding groove 2 8, sealing gasket 9, rubber covering ring 10, pipe 11, bolt 12. DETAILED DESCRIPTION
[0024] In order to make the purpose and technical solution of the present invention clearly and completely described, and the advantages more clearly understood, the embodiments of the present invention are further described in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present invention, not all of them, and are only used to explain the embodiments of the present invention, and are not used to limit the embodiments of the present invention. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0025] See also Figure 1-Figure 9 The present invention provides a technical solution: a leakage-proof flange, comprising a flange body 1, the flange body 1 is sleeved and welded on the end of a pipe 11, a bolt hole 2 is opened on the surface of the flange body 1, and rubber plug rings 3 are embedded at both ends of the bolt hole 2. The bolt hole 2 is an "I"-shaped circular hole, and rubber plug rings 3 are inserted and fixed at both ends of the bolt hole 2. The rubber plug ring 3 is a "convex"-shaped ring, and one end of the rubber plug ring 3 protrudes from the bolt hole 2. When the flange body 1 is assembled, the bolt holes 2 on the surfaces of the two flange bodies 1 are penetrated by the bolts 12, and the rubber plug ring 3 is clamped between the flange body 1 and the bolts 12 to generate elastic deformation.
[0026] During use, when two groups of pipes 11 with flange bodies 1 are assembled, after the bolts 12 are passed through the bolt holes 2 on the surfaces of the two groups of flange bodies 1, the bolts 12 are locked, and the screw rod of the bolt 12 squeezes the rubber plug ring 3 and is inserted into the inner part of the bolt hole 2 to produce elastic deformation. At this time, the screw rod is clamped in the bolt hole 2 to prevent the screw rod from loosening from the bolt hole 2 at will; and the screw rod end plate body and the nut of the bolt 12 respectively squeeze the parts of the rubber plug ring 3 on both sides protruding from the bolt hole 2 to produce elastic deformation, acting as an elastic gasket, further preventing the bolt 12 from loosening.
[0027] A second embedding groove 8 is provided on the side of the flange body 1 away from the introduction ring 5. The second embedding groove 8 is an annular groove. A sealing gasket 9 is fixed inside the second embedding groove 8. The sealing gasket 9 is an annular plate structure. The thickness of the sealing gasket 9 is greater than the depth of the second embedding groove 8. When the flange bodies 1 are assembled, the sealing gasket 9 is clamped between the two flange bodies 1 to produce elastic deformation.
[0028] During use, after the bolts 12 are tightened, the gaskets 9 are deformed under pressure and retracted into the corresponding mounting grooves 8. The two groups of gaskets 9 form a sealing structure between the two groups of flange bodies 1, thereby improving the sealing performance of the two groups of flange bodies 1 after connection.
[0029] The inner ring opening of the flange body 1 is provided with a pipe assembly groove 4 for sleeve-mounting the pipe 11. The pipe assembly groove 4 is an annular groove. After one end of the pipe 11 is inserted into the pipe assembly groove 4, the outer ring surface of the pipe 11 is welded to the surface of the flange body 1. The rubber covering ring 10 is a circular ring plate with an "L"-shaped cross-section. The end of the rubber covering ring 10 away from the flange body 1 is a truncated cone ring. The inner ring diameter of one end of the rubber covering ring 10 is smaller than the outer diameter of the pipe 11. The rubber covering ring 10 covers the outside of the welding seam between the flange body 1 and the pipe 11.
[0030] When in use, it is necessary to install the flange body 1 on the end of the pipe 11 in advance, that is, turn over the rubber covering ring 10, insert one end of the pipe 11 into the pipe assembly groove 4, and then weld the flange body 1 and the pipe 11 to fix them. After the temperature of the welding point drops, turn back the rubber covering ring 10 to cover the outside of the welding seam to reduce the risk of corrosion of the welding point by external moisture.
[0031] An introduction ring 5 is integrally formed at the inner ring opening of the flange body 1 for inserting into the pipe 11. A rubber covering ring 10 is fixed to the surface of the flange body 1 and sleeved at the welding point between the flange body 1 and the pipe 11. The introduction ring 5 is a circular tube structure. The outer diameter of the introduction ring 5 is equal to the inner diameter of the pipe 11. An embedding groove 6 is provided on the outer ring surface of the introduction ring 5. The embedding groove 6 is an annular groove. A sealing ring 7 is sleeved and fixed inside the embedding groove 6. The outer diameter of the sealing ring 7 is larger than the outer diameter of the introduction ring 5. After the introduction ring 5 is inserted into the pipe 11, the sealing ring 7 is clamped between the introduction ring 5 and the pipe 11 to produce elastic deformation.
[0032] When in use, the introduction ring 5 is provided at the inner ring opening of the flange body 1 so that after the flange body 1 is fixed to the pipeline 11, the inner ring opening of the flange body 1 is introduced into the pipe opening of the pipeline 11 through the introduction ring 5, and cooperates with the sealing ring 7 to achieve multiple sealing effects after the flange body 1 and the pipeline 11 are connected.
[0033] The detailed usage process of the anti-leakage flange is as follows:
[0034] Initial connection between the flange body and the pipeline: First, the inner ring opening of the flange body 1 is designed with an introduction ring 5, whose outer diameter is equal to the inner diameter of the pipeline 11, so that the flange body 1 can be accurately inserted into the pipe opening of the pipeline 11 through the introduction ring 5. The outer ring surface of the introduction ring 5 is provided with an embedding groove 6, and a sealing ring 7 is fixed inside. When the introduction ring 5 is inserted into the pipeline 11, the sealing ring 7 is clamped between the introduction ring 5 and the pipeline 11. Since the outer diameter of the sealing ring 7 is larger than the outer diameter of the introduction ring 5, it will produce elastic deformation to form the first layer of sealing.
[0035] Fixing of flange body and pipeline: The inner ring of flange body 1 is also provided with pipeline assembly groove 4 for sleeve pipe 11. After one end of pipeline 11 is inserted into pipeline assembly groove 4, the outer ring surface of pipeline 11 and the surface of flange body 1 are fixed together by welding. During welding, rubber covering ring 10 (whose cross section is "L" shaped, and the end away from flange body 1 is a truncated cone ring) is pre-folded to avoid interfering with welding process. After welding is completed, when the temperature of welding place drops, rubber covering ring 10 is folded back to cover the outside of welding seam, which plays the role of protecting welding seam and preventing external moisture erosion.
[0036] Connection and sealing between flange bodies: When two groups of pipes 11 with flange bodies 1 installed need to be assembled, the connection is achieved by passing bolts 12 through the bolt holes 2 on the surfaces of the two groups of flange bodies 1. The bolt hole 2 is designed as an "I"-shaped circular hole, with rubber plug rings 3 (in the form of a "convex"-shaped ring) embedded at both ends. When the bolt 12 is inserted into the bolt hole 2 and tightened, the screw of the bolt 12 will squeeze the part of the rubber plug ring 3 inserted into the inner side of the bolt hole 2, causing it to produce elastic deformation, thereby clamping the screw to prevent the screw from loosening from the bolt hole 2 at will. At the same time, the screw end plate body and nut of the bolt 12 will respectively squeeze the part of the rubber plug ring 3 on both sides protruding from the bolt hole 2, causing elastic deformation, acting as an elastic gasket, and further preventing the bolt 12 from loosening.
[0037] Enhanced sealing: A second embedding groove 8 (annular groove) is provided on the side of the flange body 1 away from the introduction ring 5, and a sealing gasket 9 (annular plate structure, with a thickness greater than the depth of the second embedding groove 8) is fixed inside. When the two sets of flange bodies 1 are connected and locked by bolts 12, the sealing gasket 9 will be clamped between the two flange bodies 1 to produce elastic deformation, thereby forming a sealing structure between the two sets of flange bodies 1, improving the sealing after connection.
[0038] In summary, the leakage-proof flange of the present invention ensures tight connection and good sealing between the flange and the pipeline and between the flanges through a multi-layer sealing structure (including a sealing ring 7, a rubber covering ring 10, a rubber plug ring 3 and a sealing gasket 9) and a precise bolt connection design, thereby effectively preventing leakage.
[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A leak-proof flange, comprising a flange body (1), the flange body (1) being sleeved and welded on the end of a pipe (11), characterized in that: The surface of the flange body (1) is provided with bolt holes (2), and rubber plug rings (3) are embedded at both ends of the bolt holes (2). The inner ring opening of the flange body (1) is provided with a pipe assembly groove (4) for sleeve-mounting the pipe (11). The inner ring opening of the flange body (1) is integrally formed with an introduction ring (5) for inserting into the pipe (11). The surface of the flange body (1) is fixed with a rubber covering ring (10) which is sleeved at the welding point between the flange body (1) and the pipe (11).
2. The anti-leakage flange according to claim 1, characterized in that: The bolt hole (2) is an I-shaped circular hole, and rubber plug rings (3) are inserted and fixed at both ends of the bolt hole (2). The rubber plug ring (3) is a convex ring, and one end of the rubber plug ring (3) protrudes from the bolt hole (2).
3. The anti-leakage flange according to claim 2, characterized in that: The flange body (1) is provided with a second embedding groove (8) on a side away from the introduction ring (5). The second embedding groove (8) is an annular groove. A sealing gasket (9) is fixed inside the second embedding groove (8). The sealing gasket (9) is an annular plate structure. The thickness of the sealing gasket (9) is greater than the depth of the second embedding groove (8).
4. The anti-leakage flange according to claim 3, characterized in that: When the two flange bodies (1) are assembled, the bolt holes (2) on the surfaces of the two flange bodies (1) are penetrated by the bolts (12), the rubber plug ring (3) is clamped between the flange body (1) and the bolts (12) to generate elastic deformation, and the sealing gasket (9) is clamped between the two flange bodies (1) to generate elastic deformation.
5. The anti-leakage flange according to claim 1, characterized in that: The pipe assembly groove (4) is an annular groove. After one end of the pipe (11) is inserted into the pipe assembly groove (4), the outer annular surface of the pipe (11) and the surface of the flange body (1) are welded.
6. The anti-leakage flange according to claim 1, characterized in that: The rubber covering ring (10) is in the form of a circular ring plate with an L-shaped cross section. The end of the rubber covering ring (10) away from the flange body (1) is in the form of a truncated cone ring. The inner ring diameter of one end of the rubber covering ring (10) is smaller than the outer diameter of the pipe (11). The rubber covering ring (10) covers the outer side of the welding seam between the flange body (1) and the pipe (11).
7. The anti-leakage flange according to claim 1, characterized in that: The introduction ring (5) is in a circular tube structure. The outer diameter of the introduction ring (5) is equal to the inner diameter of the pipeline (11). The outer ring surface of the introduction ring (5) is provided with an embedding groove (6). The embedding groove (6) is an annular groove. A sealing ring (7) is fixedly sleeved inside the embedding groove (6). The outer diameter of the sealing ring (7) is greater than the outer diameter of the introduction ring (5). After the introduction ring (5) is inserted into the pipeline (11), the sealing ring (7) is clamped between the introduction ring (5) and the pipeline (11) to generate elastic deformation.
Citation Information
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