汽轮机冷态起动过程的最佳温升率  

OPTIMAL TEMPERATURE RISE RATE IN THE COLD START-UP PROCESS OF STEAM TURBINES

作　　者：黎明[1] 杨继明[1] 白云[1] 

机构地区：[1]长沙理工大学,湖南长沙410076

出　　处：《热力发电》2008年第7期57-61,共5页Thermal Power Generation

基　　金：湖南省教育厅科学研究重点项目(编号06A002)

摘　　要：对300 MW汽轮机组在不同温升率的冷态起动运行方式下转子的热应力场进行了计算分析,得出了温升率与转子热应力的变化关系以及温升率对转子疲劳寿命损伤的影响,并给出了最佳温升率。Calculation and analysis of rotor＇s thermal stress field under operation mode of cold start - up in different temperature rise rate for 300 MW steam turbine unit have been carried out,obtaining variation relationship between the temperature rise rate and the thermal stress,as well as the influence of temperature rise rate upon the fatigue damage of rotor＇s life. And the optimal temperature rise rate has been also given.

关 键 词：汽轮机 冷态起动 温升率 温度场 热应力场 疲劳损伤 

分 类 号：TK267[动力工程及工程热物理—动力机械及工程]