中国电机工程学报2012，Vol.32Issue(14)：49-55,7.
锅炉过热器蒸汽侧氧化膜的应力状态分析
Analysis on Stress State of the Steam-side Oxide Scale in Superheater Tubes
摘要
Abstract
Exfoliation of an oxide scale from the steam side of superheater tubes has serious effects on the safety of thermal power plants.Considering the influence of temperature on coefficient of thermal expansion,a multi-layered hollow cylinder model was developed,and different stress components as well as von Mises equivalent stress in the steam-side oxide scale of T91 superheater tubes were then calculated under 3 different operating conditions.The calculation results show a potential for the occurrence of two distinct failure modes that may be activated by hoop stress or axial stress.It has been concluded that the failure of an oxide scale may occur due to the overlarge decrease of steam temperature or load with fixed other associated parameters.关键词
过热器/蒸汽侧/氧化膜/脱落/稳态/应力Key words
superheater/steam-side/oxide scale/exfoliation/steady-state/stress分类
能源科技引用本文复制引用
黄军林,周克毅,边彩霞,胥建群..锅炉过热器蒸汽侧氧化膜的应力状态分析[J].中国电机工程学报,2012,32(14):49-55,7.基金项目
国家自然科学基金项目 （）
