利用假设检验理论进行管道泄漏检测  

Pipeline leaks detection based on hypothesis test theory

作　　者：陈春刚[1] 王毅[2] 杨振坤[2] 

机构地区：[1]国电热工研究院,陕西西安710032 [2]西安交通大学环境与化学工程学院,陕西西安710049

出　　处：《石油化工设备》2004年第2期46-49,共4页Petro-Chemical Equipment

摘　　要：受检测系统误差影响 ,利用动态质量平衡进行管道泄漏检测灵敏度较低。通过对一种假设检验方法———序贯概率比检测的性能进行分析 ,考虑描述其性能的 2个参数———操作线和平均样本数函数 ,提出了将序贯概率比检测应用于管道泄漏判断的方法。实际应用表明 ,该方法克服了序贯概率比检测的原有缺点 ,用其进行管道泄漏检测提高了检测灵敏度和报警速度。The sensitivity of leaks detection method based on dynamic quantity balance can not satisfy the measuring requirement because of influences of errors and requirements on false alarm and detection speed.The sequential probability ratio test (SPRT), one of hypothesis test methods, is analyzed, and an improved sequential probability ratio test method for pipeline leaks detection is proposed considering the OC-courve and the ASN-function. In the experimental test, it is found that this method can overcome the SPRT's shortcomings, and it can increase the detection sensitivity and detection speed.

关 键 词：管道 泄漏 动态质量平衡 序贯概率 检测 

分 类 号：TE973[石油与天然气工程—石油机械设备]