Natural gas pipeline leakage monitoring method based on optical fiber sensing
A natural gas pipeline, optical fiber sensing technology, applied in pipeline systems, gas/liquid distribution and storage, mechanical equipment, etc., can solve the problems of high false alarm rate, easy to be affected by environmental factors, low sensitivity, etc.
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[0078] The present invention will be further described in conjunction with the accompanying drawings and embodiments, but the protection scope of the present invention should not be limited thereby.
[0079] Embodiment. The composition of this example is asfigure 1 As shown, a fiber optic sensor is installed on the pipeline body every 1.5km, and a total of 10 sensors are installed. The first 5 sensors and the last 5 sensors form a sensor group respectively, and all fiber optic sensor groups share one fiber in the transmission cable with the The light source connection of the system is used as a launch fiber, and each fiber sensor group uses one fiber in the transmission cable to connect to the system photodetector as a return fiber; the output terminal of the photodetector includes the functions of leakage signal identification and event location The signal acquisition and processing module, the output of the signal acquisition and processing module is connected to the microcom...
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