Testing method of leakage rate of high-temperature sealing gasket and testing device thereof

Abstract

The invention relates to a testing method of the leakage rate of a high-temperature sealing gasket and a testing device thereof, which establishes the corresponding testing method of the leakage rateof the high-temperature sealing gasket. The testing method and the testing device thereof perfect the testing method of the leakage rate of the high-temperature gasket, have reasonable structure, ensure the high precision in measuring the pressure of a leakage detecting cavity, and overcome the problem of large experimental error because the leakage detecting cavity is not tightly sealed, so the leakage rate test of the high-temperature gasket can be realized easily. The structure of the leakage detecting cavity is improved, and the testing method of the leakage rate of the high-temperature gasket by using a low-pressure region as the leakage detecting cavity is established. The invention plays a positive role in researching the sealing performance of the high-temperature gasket and promoting the progress of the sealing technique, and well meets the requirements of the high-speed development of the modern industry for gasket sealing.

Description

technical field [0001] The invention relates to the test of the high-temperature sealing performance of the gasket, and proposes a test method and the test device for the leakage rate of the high-temperature sealing gasket by designing a test device with a special structure. Background technique [0002] Bolt flange gasket seals are widely used in equipment and pipeline connections in the process industry, and gaskets are key components that affect the sealing performance of connections. The sealing of the fluid is achieved through the close contact between the flange and the gasket, relying on the elastic-plastic deformation of the gasket to reduce or block the leakage channel to increase the flow resistance. [0003] In the past 30 years, the sealing characteristics of bolted flange connection structures have been comprehensively studied at home and abroad. The most fruitful in this field of research is the in-depth study of gasket performance. As early as 1974, the Bolt...

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Problems solved by technology

[0010] Although there have been many tests on the sealing performance of high-temperature gaskets at home and abroad, there is no perfect method for testing the leakage rate of high-temperature gaskets. The existing test devices for high-temperature sealing performance of gaskets have outdated structures, and the leak-testing cavity is located in the high-pressure area of ​​the medium. , the measurement accuracy of the leak detection cavity pressure is low, and it is easy to produce the problem of large test error due to the poor sealing of the leak detection cavity, and it is difficult to test the leakage rate of the high temperature gasket

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