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首页> 外文会议>Biennial International Conference on Engineering, Science, Construction, and Operations in Challenging Environments >Research on Active Thermal Based Distributed Fiber Optic Temperature Sensing for Leakage Detection in Water Pipeline
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Research on Active Thermal Based Distributed Fiber Optic Temperature Sensing for Leakage Detection in Water Pipeline

机译：基于主动热效应的分布式光纤管道泄漏检测研究

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摘要

Leakage loss of urban water pipelines is a common problem, which causes tremendous waste of water resources and great economic loss. Due to the long distance and complicated pipeline network, the existing technologies cannot effectively realize the leakage detection and localization of the whole pipeline network. In this research, the feasibility of leakage detection and localization in water pipelines was demonstrated based on active thermal method and distributed fiber optic temperature sensing technology. In the proposed method, the sensing element was a thermal cable that was fabricated by coupling the heating element with the distributed fiber optic temperature-sensing element. The thermal cable was buried under the pipeline. On account of the different heat transfer characteristics of heated thermal cable in soil and water environments, the conduction in soil and convection in water, respectively, the leakage and nonleakage locations can be identified. Numerical simulations and experiments were conducted to verify the feasibility of the proposed method for leakage detection. Good agreement has been achieved.
机译：城市给水管道泄漏损失是一个普遍存在的问题，造成了巨大的水资源浪费和巨大的经济损失。由于长距离、复杂的管网，现有技术无法有效实现整个管网的泄漏检测和定位。在本研究中，基于主动热法和分布式光纤温度传感技术，验证了水管泄漏检测和定位的可行性。在提出的方法中，传感元件是通过将加热元件与分布式光纤温度传感元件耦合而制成的热电缆。热电缆埋在管道下面。由于热电缆在土壤和水环境中的传热特性不同，土壤中的传导和水中的对流可以分别识别泄漏和非泄漏位置。通过数值模拟和实验验证了该方法的可行性。达成了良好的协议。

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