Abstract
The detection and location of pipeline leakage can be deduced from the time difference between the arrival leak signals measured by sensors placed at the pipe access points on either side of a suspected leak. Progress has been made in this area to offer a potential improvement over the conventional cross-correlation method for time delay estimation. This paper is concerned with identifying suitable sensors that can be easily deployed to monitor the pipe vibration due to the propagation of leak noise along the pipeline. In response to this, based on the low-frequency propagation characteristics of leak noise in our previous study, polyvinylidene fluoride (PVDF) wire sensors are proposed as a potential solution to detect the pipeline leak signals. Experimental investigations were carried out at a leak detection pipe rig built in the Chinese Academy of Sciences. Their performances for leak detection were shown in comparison with hydrophones. It is suggested that with special considerations given to aspects pertaining to non-intrusive deployment and low cost, the PVDF wire sensors are of particular interest and may lead to a promising replacement for commercial leak noise transducers.
Highlights
High quality municipal utilities are fundamental to sustaining modern life and economic growth.Recently, a great challenge involving water loss in the stock of water distribution network, has confrontsChina’s buried infrastructure [1]
The use of the polyvinylidene fluoride (PVDF) wire sensors has been investigated for pipeline leakage localization
The performance of the wire sensor has been studied with respect to pressure sensitivity for monitoring the pipe vibration due to leakage
Summary
High quality municipal utilities are fundamental to sustaining modern life and economic growth. Improvements of the performance of the water distribution pipes for effectively transporting a water resource will provide significant social, environmental, and economic benefits With this in mind, there is an increasing demand for the development of leak detection equipment for the accurate location of pipeline leakage on a cost-effective basis. Continuous (real-time) pipe network monitoring systems have commenced more recently to take the leak detection and location methods into a whole new sphere, which requires the deployment of a wireless sensor network to work steadily in extreme environments of high humidity and high corrosion [20,21,22]. PVDF wire sensors are developed and their performance for pipeline leakage detection and location are assessed.
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