Acoustic detection technology for gas pipeline leakage |
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| Authors: | Qingqing Xu Laibin Zhang Wei Liang |
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| Institution: | 1. Electronics and Telecommunications Research Institute, Daejeon 34129, Republic of Korea;2. Chungnam National University, Daejeon 34134, Republic of Korea;3. Korea Atomic Energy Research Institute, Daejeon 34057, Republic of Korea;1. Tongji University, State Key Laboratory of Disaster Reduction in Civil Engineering, Siping 1239, Shanghai 200092, China;2. Tongji University, College of Civil Engineering, Siping 1239, Shanghai 200092, China;1. College of Pipeline and Civil Engineering in China University of Petroleum (East China), Qingdao 266580, China;2. Key Laboratory of Qingdao Oil and Gas Storage and Transportation Technologies, China University of Petroleum (East China), Qingdao 266580, China;3. Key Laboratory of CNPC Heavy Gas Transportation and LNG Technologies, China University of Petroleum (East China), Qingdao 266580, China;4. College of Information and Control Engineering in China University of Petroleum (East China), Qingdao 266580, China;5. Offshore Oil Engineering CO., Ltd., Tianjin 300451, China;6. Sinopec Qingdao LNG Co., Ltd., Qingdao 266400, China;1. College of Pipeline and Civil Engineering in China University of Petroleum (East China), Qingdao 266580, China;2. Sinopec Qingdao LNG Co.,Ltd, Qingdao 266400, China;3. Key Laboratory of Qingdao Oil and Gas Storage and Transportation Technologies, China;4. Key Laboratory of CNPC Heavy Gas Transportation and LNG Technologies, China;1. College of Pipeline and Civil Engineering in China University of Petroleum (East China), Qingdao 266580, China;2. Shandong Key Laboratory of Oil-Gas Storage and Transportation Safety, Qingdao 266580, China;3. Guangxi Colleges and Universities Key Laboratory of Beibu Gulf Oil and Natural Gas Resource Effective Utilization, Qinzhou University, Qinzhou 535011, China |
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| Abstract: | Gas leakage from pipeline leads to significant environmental damages and industrial hazards, so small leakage detection for gas pipeline is essential to avoid these serious leakages. However, because of the high frequency component of leakage signal attenuates quickly, traditional detection method which inspects pressure or vibration signal has problem to get effective information from leakage signal. So, a novel detection method based on acoustic wave is proposed. This paper, firstly, researches on the phonation principle of pipeline leakage and the characteristic of sound source, and simulates the leakage acoustic field on the basis of aero acoustics. Secondly, using Wavelet Packet Transform method and Fuzzy Support Vector Machine pattern classification, the laboratory testing for identifying acoustic signal of gas pipeline leakage is presented. Finally, the field application demonstrates that the detection system could identify small gas leakage effectively and avoids false-alarms which caused by running conditions with a good prospect. |
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