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A kind of metal foil high temperature sealing method

A high-temperature sealing, metal foil technology, applied in pressure vessels, fixed-capacity gas storage tanks, mechanical equipment, etc., can solve the problems of high sealing surface temperature, large deformation, uneven distribution of pressing force on the sealing surface, etc. Reliability, the effect of reducing the effect of high temperature

Active Publication Date: 2016-12-07
CHINA AIRPLANT STRENGTH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The strength and stiffness of the metal foil itself are low, and the direct use of bolts for compression results in uneven distribution of the compression force on the sealing surface, with large differences, and it is impossible to ensure that the sealing pressure at all locations on the sealing surface meets the requirements
[0005] 2) Metal foil The heat sink of metal foil itself is small, and its deformation is large at high temperature. After thermal expansion, it will produce wrinkles on the edge, resulting in gaps on the sealing surface
[0006] 3) Structures such as sealing grooves cannot be used on the surface of the metal foil, and the use of sealing grooves and other structures on the bonding surface may easily cause the metal foil to break
[0007] 4) Due to insufficient cooling in the connection area, the temperature of the sealing surface is too high, which limits the use of sealants

Method used

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  • A kind of metal foil high temperature sealing method
  • A kind of metal foil high temperature sealing method
  • A kind of metal foil high temperature sealing method

Examples

Experimental program
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Effect test

specific Embodiment

[0048] 1) Weld the active cooling connecting flange [3E] on the sealing end face of the required connection, and reserve a cooling liquid circulation channel inside the connecting flange [3E], which is used to circulate the cooling liquid to cool the connecting flange; connection method The thickness of the blue plate [3E] is H1, and the threaded holes [1A] with a diameter D1 are uniformly distributed circumferentially at a distance L2 at a distance from the outer ring L1, and a cooling groove with a width of L4 and a depth of H2 is opened at a position distance from the inner ring L3 [1B]; wherein H1=50mm, L1=15mm, L2=50mm, D1=10mm, L3=10mm, L4=10mm, H2=30mm.

[0049]2) Prepare the frame pressing plate [3A] with the same external dimensions and opening dimensions as the connecting flange [3E], and the thickness is H3, and make slits on it, and all the slits [2A] from the frame pressing plate [3A] ] Start from the inner ring, cut outwards, each slit [2A] is located on the symm...

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Abstract

The invention discloses a metal foil high temperature sealing method and belongs to the field of structural thermal intensity tests. According to the metal foil high temperature sealing method, high temperature influences to the metal foil are reduced and structural styles of a connection region are changed due to initiative and passive cooling modes to adapt to the metal foil requirement for sealing. The metal foil high temperature sealing method guarantees sealing in the positive pressure and negative pressure environment under the condition with the temperature to be at 1000 degrees and is convenient for achievement of metal foil pressurizing and loading modes in the thermal intensity tests.

Description

technical field [0001] The invention relates to a metal foil high-temperature sealing method, which belongs to the field of structural thermal strength tests. Background technique [0002] With the development of heat strength test technology, the test method of pressing and heating the test piece by metal foil deformation is proposed. This test method requires the metal foil to be sealed on the end face of the pressure vessel, but there is no relevant experience and technology to refer to the sealing method of the metal foil in the high temperature and pressure comprehensive environment, so this invention is aimed at the sealing of the metal foil end face in the high temperature and pressure comprehensive environment Related technical difficulties, reasonable and effective solutions are proposed, and the end face sealing of pressure vessels using metal foil is effectively and reliably realized in a comprehensive environment of high temperature and pressure. [0003] The te...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16J13/00
Inventor 王琦陆林王孟孟丛琳华王振亚
Owner CHINA AIRPLANT STRENGTH RES INST
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