A valve end connection fire resistance performance test system and test method

Abstract

A valve end connection fire resistance performance test system and test method, the system includes a combustion device to provide conditions for the fire resistance test, and also includes an environmental combustion chamber for the fire resistance test of the tested valve; The valve exerts force and makes the tested valve go in and out of the combustion chamber; the pressure-applying pipeline device is set outside the combustion chamber and extends into the combustion chamber to connect with both ends of the tested valve; the leak detection device includes the valve wrapped outside the tested valve A sealing cover, a leak detection component connected to the sealing cover through pipelines and arranged outside the combustion chamber. The invention uses an incompressible solution as the test medium, and the test medium is pushed from the pressure gas source to the valve under test, which ensures that the solution is used throughout the test process, and there is no need to add a liquid filter, an air filter, and a compensation pipeline in the leak detection device At the same time, it avoids the pressure fluctuation caused by the excessive boost ratio when the traditional booster pump drives water as the pressure source, ensuring the accuracy of the test measurement.

Description

technical field [0001] The invention relates to the technical field of valve end connection tests, in particular to a valve end connection fire resistance performance test system and test method. Background technique [0002] The end connection of the valve in the petroleum and petrochemical industry is usually a potential failure point of the device system. When the end connection of the valve or flange is exposed to the surrounding high temperature flame environment for a long time, the heating speed of the flange and the bolt is faster than that of the flange. The heating rate of the interior and the seal, creating a temperature gradient at the connection point, and at the same time due to the increase in temperature will lead to a decrease in joint stiffness and yielding of gaskets, studs, etc., resulting in permanent tension causing permanent loss of preload, Lead to valve leakage, resulting in economic losses, environmental damage and major safety accidents. Therefore...

AI Technical Summary

Problems solved by technology

A scientific and rational design of the test system is the prerequisite for accurately testing the fire resistance of valve end connections. There is no technology for measuring the fire resistance of valve end connections in the prior art.

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