油罐底板腐蚀最大深度的概率分布研究  

Research on Probability Distribution of Maximal Corrosion Depth for Tank Soleplate

作　　者：吴松林[1] 何超[1] 但琦[1] 杨廷鸿[1] 王春林[1] 

机构地区：[1]后勤工程学院基础部,重庆401311

出　　处：《压力容器》2012年第4期7-11,共5页Pressure Vessel Technology

基　　金：总后物资油料部资助项目:钢质储油罐腐蚀状况预测研究(BX210J001)

摘　　要：通过随机极值理论,研究了油罐底板腐蚀最大深度的概率分布;依据试验数据,分别对极值Ⅰ和Ⅱ型分布的参数进行了估计和回归分析。这两方面都证实了油罐底板腐蚀最大深度服从极值指数很小的极值Ⅰ型分布,这比以前认定的其服从极值Ⅱ型分布来说更准确,并就某油库数据进行了实证。对油罐腐蚀状况的研究有重要的理论和实践意义。According to the random extreme value theory,the probability distribution on the maximal corrosion depth of the tank soleplate is studied.Based on experimental data,the parameters of extreme value distribution typeⅠ and type Ⅱare estimated and regressed respectively.This two ways confirm that the probability distribution of the maximal depth for tank soleplate is more close to the distribution of the typeⅠthan the type Ⅱ which previously identified.Afterward,it is verified by the data of oil storeroom.It has important theoretical and practical significance to the studies for the corrosion status on the tank.

关 键 词：油罐 腐蚀 极值分布 参数估计 回归分析 

分 类 号：TH49[机械工程—机械制造及自动化] TE988[石油与天然气工程—石油机械设备]