基于声波技术的管道泄漏检测与定位系统的研究

Research on detection and location system of pipeline leakage based on acoustic wave technology

天然气管道漏点在线实时泄漏监测与定位系统的研究与应用,使得泄漏能够被及时发现并确定泄漏点的位置,从而降低因天然气泄漏造成的经济损失,同时对提高天然气输送管线的自动化管理水平有着深远的意义。通过对国内外各种管道泄漏检测技术的研究和分析比较,采用声波检测方法应用于输气管道的泄漏检测策略,在信号处理方面采用虚拟仪器软件设计了天然气管线声波泄漏实时监测定位系统,对泄漏声波信号进行波形实时显示、数字滤波、相关运算以及泄漏点定位等操作,实现了管线泄漏检测的自动化。

The online real-time leakage detection and location system of natural gas pipeline leak source makes the leakage can be discovered in time,which can confirm leak source location accurately. The economic losses caused by natural gas leakage can be reduced,and it has profound significance for improving automated management level of natural gas transportation pipeline. By studying and comparative analyzing to pipeline detection technology at home and abroad,acoustic wave technology is applied to leakage detection of gas pipeline. The real-time acoustic wave monitoring and location system for natural gas line leakage was designed by virtual instrument software to proceed signal processing. The leaked acoustic wave signal is proceeded with waveform real- time display,digital filtering,correlated calculation,leakage location and other operations. The automation of pipeline leakage detection was realized.