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A large gap compensation type sealing device for high temperature and autoclave

A sealing device, high temperature and high pressure technology, applied in the direction of engine sealing, mechanical equipment, engine components, etc., to achieve the effect of improving test efficiency, simple structure, and convenient installation and disassembly

Active Publication Date: 2021-03-12
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of test is still in the exploratory stage, and there is no mature sealing structure at home and abroad that can meet the test environment requirements

Method used

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  • A large gap compensation type sealing device for high temperature and autoclave
  • A large gap compensation type sealing device for high temperature and autoclave
  • A large gap compensation type sealing device for high temperature and autoclave

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Embodiment Construction

[0012] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0013] The present invention is a high-temperature and autoclave large-gap compensation sealing device, which includes a sealing groove part 1, a baffle plate 6, an auxiliary O-shaped sealing combination, an outer main sealing structure, and an inner sealing structure; wherein, the sealing groove part 1 The function of installing and fixing the sealing ring is designed with threaded holes for disassembly; the baffle plate 6 plays the role of limit and pre-tightening; the auxiliary O-shaped sealing combination is composed of the outer auxiliary PTFE retaining ring 2 and the fluorine rubber O-ring 3, which acts as an auxiliary seal Function: The outer main seal structure includes the outer conical aluminum anti-flow ring 4, the outer PTFE retaining ring 5, and the outer large-diameter O-ring 11. When pressure occurs in the kettle, the outer lar...

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Abstract

The invention belongs to the ultra-high pressure and high temperature test technology of steel pipes, and relates to a large-gap compensation type sealing device for high-temperature and high-pressure kettles. The invention includes a sealing groove, a baffle, an auxiliary O-shaped sealing combination, an outer main sealing structure, and an inner sealing structure; the sealing groove plays the role of installing and fixing the sealing ring; the baffle plays the role of limiting and pre-tightening; The auxiliary O-ring seal combination is composed of an outer auxiliary PTFE retaining ring and a fluororubber O-ring, which acts as an auxiliary seal; the outer main seal structure includes an outer conical aluminum anti-flow ring, an outer PTFE retaining ring, and an outer large-diameter O-ring ; The inner sealing structure is composed of a single-side concave PTFE retaining ring integrated with a compensating sealing structure and an inner large-diameter O-ring. The high-temperature and autoclave large-gap compensation type sealing device of the present invention is suitable for sealing environments such as ultra-high pressure high temperature, large gap, fretting, rough surfaces, etc., and solves technical problems in the field of simulating oil casing deep well environment tests at home and abroad.

Description

technical field [0001] The invention belongs to the ultra-high pressure and high temperature test technology of steel pipes, and relates to a large-gap compensation type sealing device for high-temperature and high-pressure kettles. Background technique [0002] In the ultra-high pressure and high temperature test of petroleum steel pipes, it is necessary to apply an external pressure of 280MPa to the steel pipes, continue high temperature at 180°C, and conduct tests under complex working conditions such as tension, compression, and three-point bending at the same time. The test requires designing a radial sealing structure that can meet the following conditions at the same time: (1) The sealing surface is a rough surface; (2) It is suitable for large gap sealing (it can meet all dimensions within the error range of a certain specification test piece); (3) ) resistant to ultra-high pressure and high temperature; (4) resistant to fatigue, and the seal will not be damaged afte...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J15/32F16J15/3268
CPCF16J15/32F16J15/3268
Inventor 贺伟王朝阳白博文赵文华张积广尧建平
Owner CHINA AIRPLANT STRENGTH RES INST
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