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Simulation Study on the Typical Influencing Factors for negative pressure wave in Liquid Pipeline Leakage

International Journal of Plant Engineering and Management 2010年第3期15卷 175-180页

作者： YANG Zi-xuan FAN Shi-dong XIONG Ting School of Energy and Power Engineering Wuhan University of Technology Wuhan 430063

We conduct simulation study on the typical influencing factors for negative pressure wave in liquid pipeline leakage. We first analyse the liquid pipeline leakage detection based on negative pressure wave method and obtain the essential simulation parameters. Then based on the physical model of pipeline and by introducing leakage boundary condition, we simulate the variation of pressure and flow rate in pipeline after leakage, the influence of leakage scale and leakage position on the pressure and flow rate in the pipeline. The results show that the leakage scale mainly influences the amplitude of negative pressure wave, and that the leakage position inflnenees both the amplitude and the shape of the curves of negative pressure wave.

关键词： negative pressure wave pipeline leakage leakage simulation

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维普期刊数据库

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Application of an Improved ISODATA Method to Pipeline Leak Detection

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Petroleum Science 2007年第2期4卷 97-104页

作者： Hu Jinqiu Zhang Laibin Wang Zhaohui Liang Wei School of Mechanical and Electronic Engineering China University of Petroleum Beijing 102249 China

Increasingly serious leak problem in pipeline transportation has not only affected the operation of pipelines but also caused loss of precious resource and environmental damage. Based on the analysis of the occurrence of negative pressure waves and the unsupervised learning of pattern recognition, the Interactive Self-organizing Data Analysis Technique Algorithm （ISODATA） method was used to classify the negative pressure waves and then the states of pipelines could be determined. K L transformation was used to eliminate the correlativity of feature parameters and to reduce the dimensionality of feature vector space to speed up calculation. Experimental results validated the accuracy and practical value of this method.

关键词： negative pressure wave ISODATA leak detection K_L transformation

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维普期刊数据库

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Research on Oil Pipeline Leak Detection and Location system

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International Journal of Technology Management 2015年第3期 127-133页

作者： Xu Xin Cao Ying Li Lei Qinhuangdao branch school Northeast Petroleum University QinhuangdaoHebei 066004

Because pipeline has large pipe diameter, large throughout and high pressure, once pipeline leakage accident happens, the damage is quite serious. In addition, pipeline leakage accident caused by man-made drilling oil stolen every year results in huge economic losses on oilfield. Therefore, a real-time and accurate pipeline leak detection and location system not only can effectively decrease leakage loss and reduce the waste of manpower and material resources in patrolling work, but also is conductive to the management of oil pipeline and improvement of economic efficiency of enterprise. The paper determines leak detection and location project giving priority to negative pressure wave and supplemented by flow parameter analysis. The method not only can judge the accidence of leakage timely and accurately, but also can effectively avoid leakage false alarm caused by start or stop pumps in pipeline.

关键词： oil pipeline leakage detection negative pressure wave

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Research on Natural Gas Pipeline Leak Detection Algorithm and Simulation

Research on Natural Gas Pipeline Leak Detection Algorithm an...

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2015年中国智能自动化学术会议

作者： Daiyong Zhou College of Automation Chongqing University of Posts and Telecommunications

In order to improve detection accuracy and reduce false alarm rate,research on gas pipeline leakage algorithm has extremely important *** this paper based on long pipe negative pressure wave algorithm,the adaptive Kalman filter detection method is proposed,which can overcome the shortage of wavelet transform *** adaptive detection model is established using the data collected by pressure *** location of leakage point can be calculated by time difference between the upstream and downstream through the Kalman *** relative error and false alarm rate are *** results show that the improved method can reduce the false alarm *** adaptive Kalman filter detection method provides a useful method for the detection of natural gas pipeline leakage.

关键词： negative pressure wave wavelet transform Adaptive Kalman filtering Detection technology

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