火电厂高温锅炉管道寿命评估方法的可靠性  

The Reliablity of Life Evaluation Methods for High Temperature Boiler Tube in Power Plant

作　　者：崔朝英[1] 黄晓荣[1] 贺红梅[1] 

机构地区：[1]郑州电力高等专科学校,河南郑州450004

出　　处：《锅炉技术》2008年第1期56-60,共5页Boiler Technology

摘　　要：简述了电厂高温锅炉管道的寿命评估方法——持久强度法、蠕变损伤法以及蠕变曲线逐步外推法,深入讨论了其可靠性,并指出了应注意的问题。结果表明:持久强度法可靠性差,蠕变损伤法及蠕变曲线逐步外推法可靠性较高。Life evaluation methods of high temperature boiler tube in Power Plant-high temperature strength method, creep damage method and creep curve extrapolation method are proposed in this paper. These methods＇s reliability is discussed deeply. Noticeable problems are also Pointed out in this paper. The results are that high temperature strength method isn＇t reliable, Creep damage method and Creep curve extrapolation method are reliable.

关 键 词：持久强度 蠕变损伤 蠕变曲线 寿命 可靠性 

分 类 号：TK229.1[动力工程及工程热物理—动力机械及工程]