Study on new nethods of improving the accuracy of leak detection and location of natural gas pipeline
As negative pressure wave is applied to leak detection and location of natural gas pipeline, the key is how to realize accurate measurement of propagation velocity of pressure wave and time difference. However, there exists problem of lower accuracy in negative pressure wave method. Aiming at the problems of velocity measurement formula with low precision and low accuracy of leaking location, a modified velocity measurement formula is proposed. In addition, based on the theory of singularity detection of wavelet transform, the singular characteristic of the transform wave caused by pipeline leakage is detected accurately. The experimental results show that it can achieve leak detection and location of natural gas with higher accuracy through these methods.
natural gas pipeline leak detection and location negative pressure wave wavelet transform singularity detection
Zhang Shuqing Gao Tianye Xu Hong Hao Guangpu Wang Zhongdong
Measurement Technology Key Lab of Hebei Province Institute of Electronic Engineering,Yanshan Univers Measurement Technology Key Lab of Hebei Province Institute of Electronic Engineering,Yanshan Univers Qinhuangdao Branch of Daqing Petroleum Institute,Qinhuangdao,China,066004
国际会议
长沙
英文
360-363
2009-04-11(万方平台首次上网日期,不代表论文的发表时间)