High-pressure gas tightness detection system

Abstract

The invention discloses a high-pressure gas tightness detection system. The high-pressure gas tightness detection system is used for performing quantitative detection on the high-pressure gas tightness of a high-pressure sealing system, wherein a certain quantity of gas for detection is introduced into a high-pressure tank and then water is continuously injected into the high-pressure tank so that the gas pressure in the detection system is capable of meeting the test requirement, and quantitative detection is performed on the gas for detection leaking from the high-pressure sealing system under this circumference, and therefore, the sealing leakage quantity of the high-pressure sealing system under corresponding testing working conditions can be obtained. According to the result of the quantitative detection, the designed leakage quantity of a sealing element can be verified so that the reasonability and safety of the design of the sealing element can be verified, and the result of the quantitative detection also can be used for detecting the leakage quantity under variable working conditions, and therefore, the correspondence between the working conditions of the sealing element and the leakage quantity can be obtained, and furthermore, the leakage quantity under the working conditions of the sealing element can be determined; consequently, accurate data support can be provided for the design of the sealing element, the connecting part of the sealing element and the like.

Description

[0001] technical field [0002] The invention relates to a high-pressure air tightness detection system. [0003] Background technique [0004] In nuclear power, thermal power, energy and other industrial sectors, equipment and pipeline flanges usually need to be sealed to form a sealed pressure system. For a pressure system, leakage is absolute, while non-leakage is relative. As long as the sealing leakage of the system meets the maximum allowable leakage rate index determined by factors such as environmental protection, safety and economy, the system can be considered as non-leakage . At present, there are two ways to test the reliability of the seal, one is high-pressure water pressure test, this method can only be used for qualitative testing, and generally only visual inspection can be used to check whether there is leakage; the other method uses low-pressure gas, Such as helium, nitrogen, etc., low-pressure leakage rate detection is carried out. Although this metho...

AI Technical Summary

Problems solved by technology

At present, there are two ways to test the reliability of the seal, one is high-pressure water pressure test, this method can only be used for qualitative testing, and generally only visual inspection can be used to check whether there is leakage; the other method uses low-pressure gas, Such as helium, nitrogen, etc., for low-pressure leak rate detection. Although this method can achieve quantitative inspection, it cannot perform quantitative detection of leakage under high-pressure conditions.

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