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首页> 外文会议>2001 International gas research conference >MOBILE REMOTE SENSOR FOR LEAK DETECTION IN NATURAL GAS PIPELINES
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MOBILE REMOTE SENSOR FOR LEAK DETECTION IN NATURAL GAS PIPELINES

机译：用于天然气管道泄漏检测的移动远程传感器

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摘要

Gas utility companies are actively looking to reduce the cost and improve the quality of maintenance in their networks of natural gas pipelines. A novel diode laser-based remote gas sensor operating as a long-path, topographic target-return lidar is described. The system is based on the principle of wavelength modulation spectroscopy at the wavelength of 1651 nm, which coincides with a strong overtone absorption line of methane. The experimental results suggest that diode laser-based lidars, especially those that benefit from the use of a fiberoptic amplifier to boost the output power of the transmitter, offer adequate detection sensitivity, spectral coverage, and technology maturity to make remote field measurements of trace gases practical. As a case in point, a mobile, field-ready system has been built and demonstrated specifically for the detection of gas leaks in underground transport and distribution gas pipelines.
机译：天然气公用事业公司正在积极寻求降低成本并提高天然气管道网络维护质量的方法。描述了一种新颖的基于二极管激光器的远程气体传感器，该传感器用作长距离地形目标返回激光雷达。该系统基于波长为1651 nm的波长调制光谱的原理，这与甲烷的强泛音吸收线相吻合。实验结果表明，基于二极管激光器的激光雷达，尤其是那些受益于使用光纤放大器来提高变送器输出功率的激光雷达，具有足够的检测灵敏度，光谱覆盖范围和技术成熟度，可对痕量气体进行远程现场测量实际的。作为一个例子，已经建立了一个移动的现场就绪系统，并专门用于检测地下运输和分配天然气管道中的气体泄漏。

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