Experimental research on detection of internal leakage of valves in pressure air pipes based on acoustic emission technology

Abstract

Valve leakage is a very important factor affecting the normal operation of pressure piping system. In this paper, based on the analysis of the mechanism of acoustic emission detection in the valve, under the condition of laboratory, the experimental platform and acoustic emission detection devices are designed and built. The experimental results show that acoustic emission technique can be used to detect leakage and evaluate leakage rate, which is very important for the real-time monitoring and quantitative detection of leakage in the pressure pipeline valve.