汽轮机转子在无热冲击情况下实现等热应力启动的研究  

Study on the Possibility of Maintaining Shock-less Constant Thermal Stress of Steam Turbine Rotors during Starting

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》2000年第5期15-17,30,共4页Power Equipment

摘　　要：依照汽轮机转子在启动过程中的热流情况 ,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 ,推导出在无热冲击情况下 ,保持汽轮机转子热应力不变的条件 ;并运用有限元法对该条件的正确性进行了验证。Based on the state of heat flow in steam turbine rotors during starting, with the rotor simulated by an endless hollow cylinder, conditions for shock less constant thermal stress starting are deduced with the help of the theory of heat conduction. The correctness of these postulated conditions has been verified by finite elements. Figs 5 and refs 4

关 键 词：汽轮机 等热应力启动 有限单元法 转子 无热冲击 

分 类 号：TK263.61[动力工程及工程热物理—动力机械及工程]