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Rubber-lined pipe fitting high-pressure sealing structure

A rubber lining, high-pressure sealing technology, applied in the direction of pipes/pipe joints/fittings, passing components, pipeline protection, etc., can solve the problems of reducing the width of the flange sealing surface, being unable to withstand high-pressure transportation, reducing service life, etc., to achieve service life. Long, good sealing, improve the effect of service life

Pending Publication Date: 2019-05-10
郑州中海威环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] When connecting straight pipes with rubber lining, flanges are generally used for connection. There are generally two ways to set up the rubber lining. One is the rubber lining flanging to the sealing surface of the flange. This method reduces the flange sealing surface. width, and cannot withstand high-pressure transportation, the risk of leakage is greater; the other is that the rubber does not flang, in this way, the inner wall of the straight pipe is easily degummed by the scouring of the slurry, resulting in corrosion of the pipe and reducing the service life; therefore, providing a structure Reasonable, easy to use, good sealing, long service life rubber lining pipe fittings high pressure sealing structure is very necessary

Method used

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  • Rubber-lined pipe fitting high-pressure sealing structure
  • Rubber-lined pipe fitting high-pressure sealing structure
  • Rubber-lined pipe fitting high-pressure sealing structure

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Such as Figure 1-4 As shown, a rubber-lined pipe fittings high-pressure sealing structure, which includes a straight pipe 2, the end of the straight pipe 2 is provided with a flange 3, the inner wall of the straight pipe 2 is provided with a rubber lining 1, the described The flanges 3 are connected by bolts 7, the outer side of the flange 3 is provided with a first groove 6, the inner sealing surface of the flange 3 is provided with a second groove 12, and the adjacent straight A gasket 5 is arranged between the pipes 2, and the gasket 5 is a circular metal wound gasket. The gasket 5 includes an inner ring 11, a filling layer 10, and an outer ring 8. The outer ring 8 Positioning rings 9 are arranged on both sides of the flange respectively, and the rubber lining 1 is flanged to fill the second groove 12 of the flange 3 and flush with the sealing surface of the flange 3 .

[0022] In the present invention, a second groove 12 is provided inside the flange 3, and the ru...

Embodiment 2

[0024] Such as Figure 1-4 As shown, a rubber-lined pipe fittings high-pressure sealing structure, which includes a straight pipe 2, the end of the straight pipe 2 is provided with a flange 3, the inner wall of the straight pipe 2 is provided with a rubber lining 1, the described The flanges 3 are connected by bolts 7, the outer side of the flange 3 is provided with a first groove 6, the lower sealing surface of the flange 3 is provided with a second groove 12, and the adjacent A gasket 5 is arranged between the straight pipes 2, and the gasket 5 is a circular metal wound gasket. The gasket 5 includes an inner ring 11, a filling layer 10, and an outer ring 8. The outer ring Positioning rings 9 are respectively arranged on both sides of 8 .

[0025] For a better effect, the bolt 7 is a full-threaded bolt, and the full-threaded bolt is used to facilitate the fastness of the connection and installation.

[0026] For a better effect, the inner ring 11 is a stainless steel inner ...

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PUM

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Abstract

The invention relates to a rubber-lined pipe fitting high-pressure sealing structure which comprises straight pipes. Flanges are arranged at the end parts of the straight pipes; rubber liners are arranged on the inner walls of the straight pipes; the flanges are connected through bolts; first grooves are formed in the outer sides of the flanges; second grooves are formed in the sealing surfaces ofthe inner sides of the flanges; a gasket is arranged between the adjacent straight pipes, is a circular ring-shaped metal winding gasket, and comprises an inner ring, a filling layer and an outer ring; and positioning rings are arranged on two sides of the outer ring. The rubber-lined pipe fitting high-pressure sealing structure provided by the invention has the advantages of reasonable structure, convenience in use, good sealability and long service life.

Description

technical field [0001] The invention belongs to the technical field of pipe fitting connection, and in particular relates to a rubber-lined pipe fitting high-pressure sealing structure. Background technique [0002] When connecting straight pipes with rubber lining, flanges are generally used for connection. There are generally two ways to set up the rubber lining. One is the rubber lining flanging to the sealing surface of the flange. This method reduces the flange sealing surface. width, and cannot withstand high-pressure transportation, the risk of leakage is greater; the other is that the rubber does not flang, in this way, the inner wall of the straight pipe is easily degummed by the scouring of the slurry, resulting in corrosion of the pipe and reducing the service life; therefore, providing a structure Reasonable, easy to use, good sealing, long service life rubber lining pipe fittings high pressure sealing structure is very necessary. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): F16L23/032F16L23/18F16L58/18
Inventor 魏新林吴晓范国杰董高辉
Owner 郑州中海威环保科技有限公司