Device for testing leakage rate of bolted flange connection system

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 means that two flanges are compressed by bolts and sealed by gaskets. Bolted flange connections are widely used in petroleum, chemical, aerospace and other industries. Because the bolted flange connection system works in a high temperature and high pressure working environment for a long time, bolt flanges are prone to bolt elongation and flange warpage. , 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 necessary to obtain the leakage rate data of th...

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

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