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Apparatus for Testing Leakage Rates of Bolted Flange Connection Systems

A connection system, bolted flange technology, applied in the field of devices for testing the leakage rate of the bolted flange connection system, can solve the problems of bolted flange connection system leakage, economic loss, bolt elongation, etc., to achieve safe and reliable detection and ensure normal operation Ease of work and operation

Active Publication Date: 2018-06-08
WUHAN INSTITUTE OF TECHNOLOGY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Bolted flange connections are widely used in various industries such as petroleum, chemical industry, aerospace, etc. Since the bolted flange connection system works in a high-temperature and high-pressure working environment for a long time, bolted flanges are prone to bolt elongation and flange warping , Gasket deformation and other problems, and these problems will cause the bolted flange connection system to leak to a certain extent, if the system leaks, it is likely to cause economic losses and safety accidents

Method used

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  • Apparatus for Testing Leakage Rates of Bolted Flange Connection Systems
  • Apparatus for Testing Leakage Rates of Bolted Flange Connection Systems
  • Apparatus for Testing Leakage Rates of Bolted Flange Connection Systems

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Embodiment Construction

[0023] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0024] Such as figure 1 As shown, a device for testing the leakage rate of a bolted flange connection system includes a left pipe 4 and a right pipe 19 connected to each other, a left flange 7 and a right flange 18 connecting the left pipe 4 and the right pipe 19 ( The left flange 7 and the right flange 18 are supported horizontally by the left bracket 26 and the right bracket 22 respectively, and the bottom of the right pipeline 19 is also provided with a pressure relief valve 21), the bolts 11 for pressing the left flange 7 and the right flange 18, and Sealed gasket 8, (with temperature sensor 28) gas storage tank 2, vacuum pump 20, heating mechanism and helium mass spectrometer leak detector 12; the non-connecting ends of the left pipeline 4 and the right pipeline 19 are all connected to the blind plate 3. Sealing by welding and forming a sealed cav...

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Abstract

The invention relates to a device for testing the leakage rate of a bolted flange connection system. The device includes a left pipeline, a right pipeline, a left flange, a right flange, a bolt, a gasket, a gas storage tank, a vacuum pump, a heating mechanism and a mass-spectrometer leak detector; non-connecting ends of the left pipeline and the right pipeline are both closed; a sealed cavity is formed in the left pipeline and the right pipeline; a cylinder is arranged at the radial outer side of the gasket and is located between the left pipeline and the right pipeline; the cylinder, the left flange, the right flange and the gasket enclose a leak detection cavity; the gas storage tank and the vacuum pump are communicated with the sealed cavity through pipelines; the heating mechanism is arranged in the sealed cavity; and the mass-spectrometer leak detector is communicated with the leak detection cavity through a pipeline. The device has the advantages of simple structure and convenient operation. With the device adopted, whether a leakage phenomenon exists on the bolted flange connection system can be detected, and leakage rates under different pressure and temperature conditions can be accurately calculated. The device is of reference significance for tightness research of the bolted flange connection system.

Description

technical field [0001] The invention relates to a device for testing the leakage rate of a bolted flange connection system. Background technique [0002] Bolted flange connection is a common connection method in pressure vessels and pipeline equipment. Bolted flange connection refers to compressing two flanges through bolts and sealing the two flanges through gaskets. Bolted flange connections are widely used in various industries such as petroleum, chemical industry, aerospace, etc. Since the bolted flange connection system works in a high-temperature and high-pressure working environment for a long time, bolted flanges are prone to bolt elongation and flange warping , Gasket deformation and other problems, and these problems will cause the bolted flange connection system to leak to a certain extent. If the system leaks, it is likely to cause economic losses and safety accidents. [0003] In order to improve the tightness of the bolted flange connection system, it is neces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/20
Inventor 程阳郑小涛喻九阳林纬王成刚徐建民
Owner WUHAN INSTITUTE OF TECHNOLOGY
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