预测压力管道腐蚀剩余寿命的可靠性方法  

Reliability Prediction on Remaining Life of Corrosion of Pressure Steel Pipeline

作　　者：张桃先[1] 刘小宁[1] 

机构地区：[1]武汉工交职业学院,武汉430205

出　　处：《化工设计》2004年第6期31-32,共2页Chemical Engineering Design

摘　　要：分析认为压力管道的腐蚀最大深度符合I型极大值分布 ,建立了腐蚀剩余寿命与腐蚀速率及变异系数、腐蚀裕量与可靠度之间的定量关系 ,得到确定腐蚀剩余寿命的计算公式。利用实测统计数据进行实例计算 ,结果表明 :本文方法比现有腐蚀剩余寿命计算方法更科学和更合理。Maximum depth of corrosion of the pressure pipeline is in accordance with I type maximum value distribution through analysis, the remaining life of the corrosion, quantitative relationship of corrosion rate, coefficient of variation, corrosion allowance and reliability established, and calculation formula of the remaining life of the corrosion determined. Practical calculation based on escalated data collected in actual test is carried out, and conclusion is that the calculation method described in this article is more scientific and reasonable than existing method.

关 键 词：压力管道 腐蚀深度 I型极大值分布 腐蚀剩余寿命 可靠度 

分 类 号：TQ050.9[化学工程]