Research on Leakage Detection and Analysis of Leakage Point in the Gas Pipeline System
Zhao Yang, Mingliang Liu, Min Shao, Yingjie Ji
DOI: 10.4236/ojsst.2011.13010   PDF   HTML     6,196 Downloads   13,390 Views   Citations


Recently, with large-scale use of natural gas and massive constructions of gas pipelines, more and more public concern is focused on pipeline leakage. The leakage caused by holes on gas pipelines generates economic losses to gas companies and causes risks to the environment and sometimes accidents. In order to detect and locate pipeline rupture immediately, the leakage detection method plays a key role in the overall integrity management in the pipeline system. One of the most important applications of transient simulation is dynamic leakage detection. A leakage detection model and the solution were proposed based on the three conservation laws in hydromechanics and the state equation, which includes transient simulation model and volume balance model. Dynamic parameters involved in the model such as pressure, flow and temperature can be acquired through SCADA (Supervisory Control And Data Acquisition) system. By analyzing the factors influencing leakage position, we came to a conclusion that leakage and outlet pressure are more important parameters compared to the coefficient of frictional resistance and pipeline diameter. The more leakage increases, the closer leakage point approaches pipeline outlet. Leakage location is closer to outlet when pipeline outlet pressure becomes bigger. Experiments were also carried out according to leakage percentage.

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Z. Yang, M. Liu, M. Shao and Y. Ji, "Research on Leakage Detection and Analysis of Leakage Point in the Gas Pipeline System," Open Journal of Safety Science and Technology, Vol. 1 No. 3, 2011, pp. 94-100. doi: 10.4236/ojsst.2011.13010.

Conflicts of Interest

The authors declare no conflicts of interest.


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