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Pipe junction cutting sleeve suitable for high temperature condition

A technology for pipe joints and conditions, which is applied in the direction of non-detachable pipe connections, pipes/pipe joints/fittings, pipe connection arrangements, etc., can solve the problems of rubber O-rings that are not resistant to high temperatures, unsatisfactory sealing methods, and lack of elasticity. To achieve the effect of ensuring the sealing effect, solving the problem of high temperature sealing, and compact structure

Active Publication Date: 2010-12-01
NANJING TECH UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The rubber O-ring with good elasticity is not resistant to high temperature, and the high temperature resistant sealing material such as graphite lacks elasticity, so this sealing method is not ideal

Method used

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  • Pipe junction cutting sleeve suitable for high temperature condition
  • Pipe junction cutting sleeve suitable for high temperature condition
  • Pipe junction cutting sleeve suitable for high temperature condition

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Abstract

The invention relates to a pipe joint sleeve suitable for high temperature, comprising a screw cap, a screw bolt, a graphite pad as a sealing material, wherein, an inclined surface exists in the interfaces of the screw cap and graphite pad or the screw bolt and the graphite pad, thus not only prolonging the length of two sealing surfaces between the graphite pad and screw cap, and the graphite pad and work pipe fitting, but also partly transforming the extrusion pressure between the screw cap and screw bolt to the pressure from the graphite pad to the work pipe fitting so as to ensure the sealing effect and connecting strength. The sleeve is especially suitable for high-temperature seal and connection of the brittle material pipe fitting.

Description

A pipe joint ferrule suitable for high temperature conditions Technical field: The invention relates to a pipe joint ferrule suitable for high temperature conditions, especially suitable for the connection between ceramic pipe fittings and metal pipelines. Background technique: Ceramic materials have excellent chemical stability and high temperature stability, but their biggest disadvantage is that they are easily brittle. There are usually three methods for connecting ceramic pipes to metal pipelines: welding, bonding and mechanical connection. The welding method can achieve a good seal and has a certain strength, but the properties of metal and ceramics are very different, and a special welding process must be used. There are many metal-ceramic welding methods reported in the literature [Ye Dameng, Xiong Weihao, Xu Huaan. Research status and prospects of metal-ceramic and metal welding technology. Materials Herald, 2006, 20(8): 72~75.], such as melting Welding, brazing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16L13/013F16L49/06
Inventor 黄彦胡小娟陈卫东
Owner NANJING TECH UNIV
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