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High temperature and high pressure kettle large gap compensation type sealing device

A sealing device, high temperature and high pressure technology, applied to the sealing of the engine, engine components, mechanical equipment, etc., to achieve the effects of high reliability, simple structure, and low test cost

Active Publication Date: 2018-05-18
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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  • High temperature and high pressure kettle large gap compensation type sealing device
  • High temperature and high pressure kettle large gap compensation type sealing device
  • High temperature and high pressure kettle large gap compensation type sealing device

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Effect test

Embodiment Construction

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

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

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Abstract

The invention belongs to steel pipe ultra high temperature and high pressure testing technologies, and relates to a high temperature and high pressure kettle large gap compensation type sealing device. The sealing device includes a sealing groove-shaped piece, a baffle, an assistant O-shaped sealing combination, an outer side main sealing structure and an inner side sealing structure. The sealinggroove model piece plays a role of mounting and fixing a sealing ring. The baffle plays a role of limiting and pre-tightening. The assistant O-shaped sealing combination is composed of an outer side assistant PTFE baffle ring and a fluororubber O-shaped ring and plays a role of assistant sealing. The outer side main sealing structure includes an outer tapered aluminum anti-flowing ring, an outer side PTFE baffle ring and an outer side large line diameter O-shaped ring. The inner side sealing structure is composed of an one-sided U-shaped PTFE baffle ring and an inner side large line diameter O-shaped ring, wherein the one-sided U-shaped PTFE baffle ring and the inner side large line diameter O-shaped ring integrate with a compensation type sealing structure. The high temperature and high pressure kettle large gap compensation type sealing device is suitable for sealing environments such as ultra high temperature and high pressure, large gap, inching and rough surfaces, and solves the technical problem of simulation of oil casing pipe deep well environments in a testing field at home and abroad.

Description

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

Claims

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Application Information

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Patent Type & Authority Applications(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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