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New City Gas Leak Detection Method and its Application

In city gas leak detection, common methane detector is vulnerable to gases such as CO, CO2,H 2O and actual conditions of interference (such as humidity, coverings and wind direction), causing false detections and failure judgment. we put the optimization of optical methane detector with infrared absorption principle to replace the traditional combustible gas detector. In order to improve accuracy and efficiency of the gas leak detection, we put forward vehicle-mounted OMDTM optical methane detectors and complementary methane portable RMLDTM laser distance measuring instrument using a new method for gas leak detection. This method is effective to exclude other combustible gases such as methane to leak detection of interference effects, it not only covers the whole of the city gas network, proactively preventing leakage accidents from happening. In the leaks rescue operation, with it, testing vehicles can quickly arrive at the scene to participate to find the leaks, and deal with the leaks as soon as possible. Engineering field application effect suggests that the gas leak detection accuracy rate is higher, low false positive rates, fast response, and it meets the needs of modern urban gas leak detection.