采用基于声学的方法和相关定位原理开发研制了一种管道泄漏点定位的检测仪。该仪器采用专用低频传感器、泄漏声信号波形的高速采集、基于网络的无线数据通讯和基于USB的数据快速传输、GPS授时等多项先进的电子技术, 可对不同材质和不同介质的管道泄漏实现现场实时定位检测和远程无线定位检测。经试验和现场应用证明, 该系统在0.4 MPa的压力下可以实现对50 m管道1 mm泄漏孔和100 mm管道3 mm孔的泄漏点定位检测。

A pipeline leakage location instrument based on acoustic method and correlation location of continuous signals was developed. This instrument uses a lot of advanced electronic technique such as low frequency acoustic emission sensor, high speed acquisition of waveform of leakage signals, wireless data communication based on internet, data high speed communication based on USB, time control based on GPS positioning and so on. The real-time leakage location test and remote wireless leakage location test are realized for different kind of pipeline with different medium leak. The testing result proves that this instrument can detect the leakage of 1mm hole for 50 m pipeline and 3 mm hole for 100 mm pipeline under 0.4 MPa compressed air.