液体输送管线小泄漏诊断技术的研究

Research of small leakage diagnostic technique for liquid delivery pipeline.

在介绍负压波法液体输送管线泄漏诊断技术工作原理的基础上,着重论述了基于负压波法的小泄漏诊断技术的两个关键技术:(1)双扭环不间断采集技术,提高采集频率,同时保证能够连续采集;(2)采用GPS(全球卫星定位系统)技术进行同步采集。模拟实验表明,采用这种方法负压波的时间坐标值为0.05 s,泄漏点的定位精度达1.45％,为液体输送管道的微小泄漏诊断提供了切实可行的方法。

After a description of the operating principle of the leakage diagnostic technique for liquid delivery pipeline by the negative pressure wave method, two key techniques of the small leakage diagnostic technique based on the negative pressure wave method are expounded, one is the two torsion circle-based uninterrupted data acquisition technique, and the other is GPS synchronizing technique. The experiment shows that the diagnostic system based on these techniques has high reliability and high diagnostic accuracy.