Compression expanding type pipe opening inner diameter high-pressure sealing device and method

A high-pressure sealing, compression-expansion technology, applied in the direction of engine sealing, engine components, mechanical equipment, etc., can solve the problems of inability to meet high-pressure sealing performance requirements, unfavorable sealing plug sealing, waste of sealing plug resources, etc. The effect of long service life and high sealing strength

Inactive Publication Date: 2015-05-20
SHANGHAI SIZE AUTOMATION EQUIP
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AI Technical Summary

Problems solved by technology

[0002] In the high-pressure sealing micro-leakage test, especially in the high-pressure helium high-precision micro-leakage detection similar to the automobile engine fuel distributor, the sealing performance of the container cavity that accommodates the test piece is very high, and it is generally used in the container The method of directly filling the sealing plug at the seali

Method used

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  • Compression expanding type pipe opening inner diameter high-pressure sealing device and method

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Embodiment Construction

[0027] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0028] refer to figure 1 As shown, the compression-expansion nozzle inner diameter high-pressure sealing device of the present invention mainly consists of a cylinder body 11, a piston assembly disposed on the cylinder body 11, and a sealing ring for sealing the inner diameter of the sealing nozzle 201 of the sealing member 20 13 poses.

[0029] The cylinder body 11 is mainly composed of a cylinder body 111 with a bottom opening and a base 112 closed on the bottom opening of the cylinder body 111. The base 112 is fixed on the bottom of the cylinder body 111 by locking screws 113, and the connection between the base 112 and the cylinder body 111 A chamber 114 is formed in between, and the top position of the side wall of the cylinder body 111 is provided with a gas joint 14 connecting the top of the interior of the chamber 114 and the...

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Abstract

The invention discloses a compression expanding type pipe opening inner diameter high-pressure sealing device and method. The device comprises an air cylinder body and a piston component. A support which is inserted and blocked to the inner wall of a sealing pipe opening of a piece to be sealed is arranged at the top of the air cylinder body. The piston component comprises a piston body and a piston rod. The piston body is arranged in the air cylinder body. The piston rod penetrates through the top of the air cylinder body and the support. A first end of the piston rod is fixed at the top of the piston body. A second end of the piston rod is provided with a pressing disc which is inserted and blocked to the inner wall of the sealing pipe opening of the piece to be sealed. Sealing rings are arranged between the pressing disc, the support and the inner wall of the sealing pipe opening. A cavity is filled with compressed air, so that the piston body and the piston rod move downwards, accordingly, the pressing disc arranged at the second end of the piston rod compresses the sealing rings downwards, and the sealing rings expand and seal the inner diameter of the sealing pipe opening of the piece to be sealed.

Description

technical field [0001] The invention relates to the technical field of high-pressure sealing, in particular to a high-pressure sealing device and a sealing method for the inner diameter of a compression expansion nozzle. Background technique [0002] In the high-pressure sealing micro-leakage test, especially in the high-pressure helium high-precision micro-leakage detection similar to the automobile engine fuel distributor, the sealing performance of the container cavity that accommodates the test piece is very high, and it is generally used in the container The method of directly filling the sealing plug at the sealing port of the cavity cannot meet the performance requirements of high-pressure sealing, and the sealing plug repeatedly rubs against the sealing port of the container cavity during repeated use, which is easy to damage the sealing plug, which is not conducive to the sealing of the sealing plug , and the damaged sealing plug can also cause waste of resources be...

Claims

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Application Information

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IPC IPC(8): F16J15/06
CPCF16J15/028F16J15/068
Inventor 张和毅
Owner SHANGHAI SIZE AUTOMATION EQUIP
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