汽轮机转子在有热冲击情况下实现等热应力启动的研究  

Research on Equal Thermal Stress Start-up of Steam Turbine Rotor with Heat Impact

作　　者：郝向中[1] 梁立德[2] 彭震中[2] 

机构地区：[1]北京电力科学研究院,北京100045 [2]华北电力大学机械系,河北保定071003

出　　处：《发电设备》2001年第2期18-22,共5页Power Equipment

摘　　要：根据汽轮机转子在启动过程中的热应力形成机理 ,将汽轮机转子简化为无限长空心圆柱体模型 ,根据热传导理论 ,推导出在有热冲击情况下 ,保持汽轮机转子热应力不变的条件 ;并运用有限元法计算了捷制2 0 0MW机组温态启动工况下实现等热应力启动的情况 ,从而验证了该条件的正确性。图 7参In this paper, based on the principle of thermal stress during start up, the H.P. Rotor of steam turbine is simplized as an unlimited hollow cylinder model and the condition of equal thermal stress start up with heat impact is deduced according to the theory of heat conduct; then, by use of FEM, the warm start up of Czecho 200 ME H.P. Rotor is calculated and this condition is testified right. Figs 7 and refs 3

关 键 词：汽轮机 高压转子 有限单元法 热冲击 等热应力启动 

分 类 号：TK263.61[动力工程及工程热物理—动力机械及工程]