长输管道泄漏故障诊断方法的研究  

Research on the Fault Diagnosis Method for the Leakage Detection of Pipelines

作　　者：蔡正敏[1] 彭飞[1] 易发新[1] 吴智中[1] 胡时岳[2] 

机构地区：[1]辽河石油勘探局,盘锦124010 [2]西安交通大学,西安710049

出　　处：《应用力学学报》2002年第2期38-43,共6页Chinese Journal of Applied Mechanics

摘　　要：将序贯概率比检验法 (SPRT)应用到管道泄漏的在线故障诊断中 ,基于SPRT检验法提出了泄漏识别因子 ,该因子的提出大大提高了泄漏监测系统的识别精度。同时对于非稳定流体 ,引入了相对稳定过程的概念 ,通过对均衡流量的检验可以进行泄漏监测。最后 ,利用参数识别等方法对泄漏进行定位 。A new pipeline leakage detection system based on the Sequential probability Ratio Test (SPRT) is presented in this paper. This detection system may apply SPRT test to the flow and pressure measurements at the ends of a pipeline. In order to improve the identical accuracy of this detection system, a leakage recognition factor is proposed. By mean of monitoring the difference of the outlet and inlet flow, this detection system has successfully identified the leakage for the non stationary flow. Finally, the leakage of the system can been located via parameter identifications.

关 键 词：长输管道 泄漏故障 诊断方法 序贯概率比检验法 参数识别 

分 类 号：U173.9[交通运输工程]