Flange with insertion sealing structure

Abstract

The utility model relates to the technical field of flanges, in particular to a flange with a plug-in sealing structure, which comprises two flange plates, the flange plates are sleeved and fixed on a pipe body of a connecting pipe, a plurality of bolt holes are arranged on the surfaces of the flange plates, a connecting ring is embedded between the two flange plates, a plug pipe is integrally formed on the inner ring surface of the connecting ring, and the plug pipe is connected with the connecting pipe. The end part of the plug pipe is inserted into the connecting pipe, the outer ring surface of the connecting ring is fixedly sleeved with a rubber gasket ring, and the rubber gasket ring is clamped between the two flange plates; the connecting structure has the advantages that the connecting ring is embedded between the two flange plates, the plug pipe is integrally formed on the inner ring face of the connecting ring, the two ends of the plug pipe are directly inserted into the connecting pipe, and plug-in type sealing is achieved. The structure greatly enhances the sealing performance of the flange joint, and is particularly suitable for high-pressure, high-temperature or corrosive medium environments.

Description

Technical Field

[0001] The utility model relates to the field of flanges, and specifically relates to a flange with a plug-in sealing structure. Background Technique

[0002] In the field of pipeline connection, flange connection is a widely used connection method. It fastens two flange plates together through bolts to achieve the connection between pipelines. However, traditional flange connection has certain deficiencies in terms of sealing performance. Especially in environments with high pressure, high temperature or corrosive media, leakage problems are likely to occur. In addition, during the installation and maintenance of traditional flanges, high precision and complex operation steps are often required, increasing the cost and difficulty.

[0003] To improve these problems, some improved flange connection structures have emerged in the market, but most still rely on the fastening force of bolts to achieve sealing, with limited sealing effect and being easily affected by environmental factors. At the same time, there are few attempts at plug-in sealing for these improved flanges, making it difficult to meet the requirements of some special application scenarios. Content of the Utility Model

[0004] The purpose of the utility model is to provide a flange with a plug-in sealing structure to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A flange with a plug-in sealing structure includes a flange plate. The flange plate is sleeved and fixed on the pipe body of the connecting pipe. A plurality of bolt holes are opened on the surface of the flange plate. There are two flange plates. An adapter ring is embedded between the two flange plates. A plug tube is integrally formed on the inner ring surface of the adapter ring. The end of the plug tube is inserted into the connecting pipe. A rubber gasket ring is sleeved and fixed on the outer ring surface of the adapter ring. The rubber gasket ring is clamped between the two flange plates. A through hole is opened on the surface of the rubber gasket ring. A rubber sleeve is integrally formed inside the through hole. The rubber sleeve is inserted into the bolt hole.

[0006] Preferably, the inner ring diameter of the flange plate is equal to the inner pipe diameter of the connecting pipe. An indentation is opened on the inner ring surface of the flange plate. The indentation is an annular groove. After the two flange plates are assembled, the adapter ring is clamped in the indentations on the surfaces of the two flange plates.

[0007] Preferably, the inner ring diameter of the adapter ring is equal to the inner ring diameter of the flange plate. The outer pipe diameter of the plug tube is equal to the inner pipe diameter of the connecting pipe. The pipe length of the plug tube is greater than the sum of the plate thicknesses of the two flange plates.

[0008] Preferably, annular grooves are opened at both ends of the plug tube. Rubber rings are sleeved and fixed inside the annular grooves. The outer ring diameter of the rubber ring is greater than the outer ring diameter of the plug tube. The rubber ring is clamped between the plug tube and the connecting pipe to generate elastic deformation.

[0009] Preferably, a clamping groove is formed on the outer ring surface of the connecting ring. The clamping groove is an annular groove, and the rubber gasket ring is sleeved and fixed in the clamping groove.

[0010] Preferably, the perforation matches the bolt hole. The pipe length of the rubber sleeve is equal to the sum of the plate thicknesses of the two flange plates, and the outer ring diameter of the rubber sleeve is equal to the aperture of the bolt hole.

[0011] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0012] The flange with a plug-in sealing structure proposed by the present utility model realizes plug-in sealing by installing a connecting ring between two flange plates and integrally forming a plug tube on the inner ring surface of the connecting ring, so that both ends of the plug tube are directly inserted into the connecting pipe. This structure greatly enhances the sealing performance at the flange connection, especially suitable for high-pressure, high-temperature or corrosive medium environments; when installing the flange connection structure, only need to clamp the connecting ring between the two flange plates and then fasten with bolts. Compared with the traditional flange connection, it reduces the installation steps and complexity and improves the installation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of the present utility model;

[0014] Figure 2 is a side view of the structure of the present utility model;

[0015] Figure 3 is Figure 2 a sectional view of the structure at A-A in

[0016] Figure 4 is Figure 3 an enlarged schematic diagram of the structure at A in

[0017] Figure 5 is a schematic diagram of the connection structure between the connecting ring and the rubber gasket ring of the present utility model;

[0018] Figure 6 is a schematic diagram of the connection structure between the connecting ring and the plug tube of the present utility model.

[0019] In the figure: flange plate 1, connecting pipe 2, bolt hole 3, notch 4, connecting ring 5, plug tube 6, side groove 7,

[0020] rubber ring 8, clamping groove 9, rubber gasket ring 10, perforation 11, rubber sleeve 12. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0021] In order to clearly and completely describe the purpose, technical solution of the present utility model and make its advantages more clearly understood, the following further details the embodiments of the present utility model with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are part of the embodiments of the present utility model, rather than all of them, and are only used to explain the embodiments of the present utility model, not to limit the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present utility model.

[0022] Please refer to Figures 1-6 , the present utility model provides a technical solution: a flange with a plug-in sealing structure, including a flange plate 1, the flange plate 1 is sleeved and fixed on the pipe body of the connecting pipe 2, a plurality of bolt holes 3 are opened on the surface of the flange plate 1, there are two flange plates 1, a connecting ring 5 is embedded between the two flange plates 1, the inner ring diameter of the flange plate 1 is equal to the inner ring diameter of the connecting pipe 2, a notch 4 is opened on the inner ring surface of the flange plate 1, the notch 4 is an annular groove, after the two flange plates 1 are assembled, the connecting ring 5 is clamped in the notch 4 on the surfaces of the two flange plates 1, a plug tube 6 is integrally formed on the inner ring surface of the connecting ring 5, the end of the plug tube 6 is inserted into the connecting pipe 2, the inner ring diameter of the connecting ring 5 is equal to the inner ring diameter of the flange plate 1, the outer ring diameter of the plug tube 6 is equal to the inner ring diameter of the connecting pipe 2, and the tube length of the plug tube 6 is greater than the sum of the plate thicknesses of the two flange plates 1.

[0023] When the two flange plates 1 are assembled, the connecting ring 5 is clamped between the two flange plates 1, and then after the bolts pass through the bolt holes 3 and the through holes 11 and the bolts are tightened, the two flange plates 1 tightly clamp the connecting ring 5 and the rubber gasket ring 10 to achieve the sealing of the connection between the two flange plates 1. And at this time, both ends of the plug tube 6 are inserted into the two connecting pipes 2 respectively to achieve plug-in sealing between the connecting pipes 2 connected by the two flange plates 1.

[0024] Both ends of the plug tube 6 are opened with side grooves 7, the side grooves 7 are annular grooves, a rubber ring 8 is sleeved and fixed inside the side grooves 7, the outer ring diameter of the rubber ring 8 is greater than the outer ring diameter of the plug tube 6, and the rubber ring 8 is clamped between the plug tube 6 and the connecting pipe 2 to generate elastic deformation; the reason for embedding the rubber ring 8 at the end of the plug tube 6 is that after the plug tube 6 is inserted into the connecting pipe 2, the rubber ring 8 plays a sealing role between the connecting pipe 2 and the plug tube 6.

[0025] A rubber gasket ring 10 is sleeved and fixed on the outer ring surface of the connecting ring 5. The rubber gasket ring 10 is clamped between two flange plates 1. A clamping groove 9 is formed on the outer ring surface of the connecting ring 5. The clamping groove 9 is an annular groove. The rubber gasket ring 10 is sleeved and fixed in the clamping groove 9. A through hole 11 is formed on the surface of the rubber gasket ring 10. A rubber sleeve 12 is integrally formed inside the through hole 11. The rubber sleeve 12 is inserted into the bolt hole 3. The through hole 11 and the bolt hole 3 are matched. The pipe length of the rubber sleeve 12 is equal to the sum of the plate thicknesses of the two flange plates 1. The outer diameter of the rubber sleeve 12 is equal to the diameter of the bolt hole 3. The reason for integrally forming the rubber sleeve 12 inside the clamping groove 9 is that when the rubber gasket ring 10 is clamped between the two flange plates 1 to play a sealing role, the rubber sleeves 12 extending from both sides of the rubber gasket ring 10 are inserted into the bolt holes 3. When the bolts pass through the bolt holes 3 of the two flange plates 1, it is avoided that the bolts shake in the bolt holes 3.

[0026] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A flange with a plug-in sealing structure, comprising a flange plate (1), the flange plate (1) being sleeved and fixed on a pipe body of a connecting pipe (2), a plurality of bolt holes (3) being provided on a surface of the flange plate (1), characterized in that: The flanges (1) are provided with two, a connecting ring (5) is embedded between the two flanges (1), a plug tube (6) is integrally formed on the inner ring surface of the connecting ring (5), the end of the plug tube (6) is inserted into the connecting pipe (2), a rubber gasket (10) is sleeved and fixed on the outer ring surface of the connecting ring (5), the rubber gasket (10) is clamped between the two flanges (1), a through hole (11) is opened on the surface of the rubber gasket (10), a rubber sleeve (12) is integrally formed inside the through hole (11), and the rubber sleeve (12) is inserted into the bolt hole (3).

2. A flange with a plug-in sealing structure according to claim 1, characterized in that: The inner ring diameter of the flange (1) is equal to the inner ring diameter of the connecting pipe (2). The inner ring surface of the flange (1) is provided with a notch (4), which is an annular groove. After the two flanges (1) are assembled, the connecting ring (5) is clamped in the notch (4) on the surface of the two flanges (1).

3. The flange with plug-in sealing structure according to claim 1, characterized in that: The inner diameter of the connecting ring (5) is equal to the inner diameter of the flange (1), the outer diameter of the plug tube (6) is equal to the inner diameter of the connecting tube (2), and the length of the plug tube (6) is greater than the sum of the thicknesses of the two flanges (1).

4. The flange with plug-in sealing structure according to claim 3, characterized in that: Both ends of the plug tube (6) are provided with side grooves (7), the side grooves (7) are annular grooves, a rubber ring (8) is sleeved and fixed inside the side grooves (7), the outer ring diameter of the rubber ring (8) is larger than the outer ring diameter of the plug tube (6), and the rubber ring (8) is clamped between the plug tube (6) and the connecting tube (2) to generate elastic deformation.

5. The flange with plug-in sealing structure according to claim 1, characterized in that: The outer ring surface of the connecting ring (5) is provided with a clamping groove (9), the clamping groove (9) is an annular groove, and the rubber gasket (10) is sleeved and fixed in the clamping groove (9).

6. The flange with plug-in sealing structure according to claim 1, characterized in that: The through hole (11) matches the bolt hole (3), the tube length of the rubber sleeve (12) is equal to the sum of the plate thicknesses of the two flanges (1), and the outer ring diameter of the rubber sleeve (12) is equal to the hole diameter of the bolt hole (3).

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