Study On Leak Detection And Localization For Long-distance Crude Oil Transport Pipeline

As one of the most important five means of transportation, pipeline transportation hasbecome the artery of modern industry and national economy. With the development ofpipeline industry, pipelines leakage occurs frequently, accompanying with the pipelines aging,inevitable erosion, abrasion and human destroying. The leakage accidents in pipelinestransportation not only cause great loss of material, but also pollute the environment; what’smore, it may lead to serious casualty.In order to guarantee the pipelines work safely and minimize the losses caused by leakageaccidents, it is necessary to study leakage detecting technology to raise the sensitivity ofdetection and accuracy of localization. Pipeline leakage detection is a multi-field object, whichinvolved many subjects, such as pipeline hydrodynamics, thermodynamics, sensor technology,subtle signal detection and signal processing. The research on pipeline leakage detection andlocalization is carried out in this dissertation.The research status of pipeline leakage detection technology home and abroad issummarized in this paper, and the principles, methods, difficulties and solutions of the pipelineleakage detection technology is also described in detail. The analysis on propagation law ofnegative pressure wave and method of wave velocity calculation is given in it; Allowed to oilpipeline characteristics, analyze the principle of dynamic pressure wave leak detectiontechnology and the key factors of influencing accurate positioning; Flow equilibrium theory isused in the paper to make the judgment that whether the leakage has occurred or not;Simultaneous signal collection between both the head and end of the pipe is realized byadopting GPS. The paper also tests and verifies all analyses on the pipeline of ShanxiYanchang Petroleum from the initial pumping station at Tianciwan to the terminal pumpingstation at Jingbian.