负压波检漏技术的探讨及其在输气管线中的应用

Study on Technology of Negative Pressure Waves Leak Detection and Its Application to Gas Pipeline

随着我国长距离输气管道的不断增多，管道沿线的泄漏问题也日益严重，因此对输气管道泄漏的自动监测和泄漏点的定位就显得尤为重要。本文介绍了应用负压波对管道泄漏进行监测的基本原理和方法，并对定位的基本公式的优化进行了讨论，介绍了更为准确的计算公式。验证结果表明，上述经过优化的计算方法具有更高的定位准确度，对管道泄漏自动监测数学模型的建立具有一定的指导意义。

With the continuously increase of long-distance gas pipelines in our country, the pipeline leakage also has become an increasingly serious problem, therefore the automatic monitoring for gas pipeline leakage and the positioning for leakage point have become particularly important： In this article, the basic principles and methods of using the method of negative pressure wave to monitor pipeline leakage are introduced with the discussion of the optimization for the located fundamental formula and the description of more precise computational formula. The proving result shows that the above optimized computing method has a higher positioning accuracy and it is of a certain instructive significance for establishing an automatic monitoring mathematical model of pipeline leakage.