对输气管道因泄漏产生的声发射信号进行分析，采用低频传感器进行泄漏声发射试验，分别采用断铅方法和阀门开启方法来模拟常规信号和管道泄漏信号，根据声发射结果得到定位图、波形图和频谱图，确认采用声发射装置可以较精确地定位到轻微的管道泄漏点，明确了工程上利用声发射检测管道泄漏的可行性。

In this paper, the acoustic emission signals generated by gas pipeline leakage are analyzed.Low-frequency sensor is used to perform test for leak acoustic emission, the broken pencil method and open valve method are separately used to simulate the normal signal and the pipeline leakage signal, and location drawing, waveform chart and spectrogram are obtained according to acoustic emission results.It is confirmed that the use of acoustic emission devices can help to locate accurately a slight pipeline leak point, which verifies the feasibility of utilizing acoustic emission to detect pipeline leak.