Method for checking sealing performance of safety valve

[0021] A method that uses leakage percentage C% as the leak proofness of safety valve, where: formula

[0022]

[0023] In the formula, m represents the mass of gas in the test container and safety valve, Δm represents the mass of gas leaked per unit time, R 0 Is the gas constant, P 1 Is the pressure value before the tightness test, the pressure drop in the safety valve per unit time λ=ΔP / P 1 ×100%;

[0024] It can be derived from the above formula that C% is equal to the pressure drop λ, and the pressure drop λ per unit time is used as the judgment index for the safety valve sealing test. The specific judgment steps are as follows:

[0025] First, install a pressure detection device with a corresponding range at the air inlet of the safety valve; the pressure detection device includes a pressure transmitter and a data processor. The pressure transmitter is connected to the data processor through a data cable. The data processor includes a computer Host and touch screen, the unit time