New Leak Localization Approach in Pipelines Using Single-Point Measurement
New Leak Localization Approach in Pipelines Using Single-Point Measurement
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DOI：
10.1061/(asce)ps.1949-1204.0000163
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发表时间：
2014-05-01
影响因子：
2
通讯作者：
Yalcinkaya, Hazim
中科院分区：
文献类型：
--
作者：
Ozevin, Didem;Yalcinkaya, Hazim
管道故障每年都会造成重大的环境和财产损失以及人员伤亡。当泄漏处于稳定区域时，目前的方法缺乏足够的灵敏度来精确定位泄漏位置。声发射(AE)方法依赖于泄漏湍流引起的传播弹性波。目前的声发射泄漏检测方法依赖于两个相邻的传感器，并且需要长时间的布线系统或具有时钟同步的无线系统，这提出了许多其他挑战。本文提出了一种新的泄漏定位方法，通过两个传感器对管道中两个垂直方向(径向和轴向)产生的波动敏感的单点测量来检测泄漏。该方法在实验室规模的钢管上与传统的两邻传感器方法进行了比较。结果表明，本文提出的定位方法能够准确定位泄漏位置，实现长距离管网单点无线声发射传感。(C)2013年美国土木工程师学会。
Pipeline failures cause significant environmental and property damage and fatalities every year. Current methods have a lack of sensitivity to pinpoint the leak location with sufficient accuracy when the leak is at the stable regime. The acoustic emission (AE) method relies on propagating elastic waves caused by the leak turbulence. The current AE leak detection methodology relies on two neighbor sensors, and requires either a long wiring system or a wireless system with clock synchronization, which raises many other challenges. In this paper, the new leak localization approach is proposed to detect the leak from a single point measurement with two sensors designed to be sensitive to the wave motions generated in pipes at two orthogonal directions (radial and axial). The approach is demonstrated on a laboratory-scale steel pipe in comparison with the conventional two-neighbor sensor approach. The result indicates that the proposed localization approach successfully pinpoints the leak location with good accuracy, which enables the implementation of single-point wireless acoustic emission sensing in long-range pipeline networks. (C) 2013 American Society of Civil Engineers.