不同配汽方式下600MW汽轮机转子的热应力分析  

Thermal Stress Analysis of 600MW Steam Turbine Rotor in Different Governing Modes

作　　者：李勇[1] 王行[1] 

机构地区：[1]东北电力大学能源与动力工程学院,吉林132012

出　　处：《汽轮机技术》2014年第4期275-278,共4页Turbine Technology

基　　金：吉林省科技发展计划资助项目(20110409)

摘　　要：某600MW亚临界汽轮机原设计采用混合配汽方式,存在着部分负荷运行下经济性差的问题,需要将现有的混合配汽方式改造为喷嘴配汽。首先分析不同配汽方式下蒸汽温度变化情况;然后运用有限元分析软件ANSYS对汽轮机转子进行温度场和应力场的计算与分析,得到其分布规律及最大温差和最大应力出现的时刻和部位。预期为汽轮机的热应力在线监测和安全经济运行提供依据。One DEC subcritical 600 MW steam turbine adopts mixed steam distribution method in the original design, which lead insufficient ef s field in the rotor with the help of the finite element analysis software ANSYS,from which we can obtain the distribution regularities of the fields, as well as the moment and the location when the maxinum temperature difference and maxinum stress appear. Which would provide basis for the on-line thermal stress monitoring and safe-economic operation of the steam turbine.

关 键 词：汽轮机 配汽方式 转子 热应力 

分 类 号：TK263.2[动力工程及工程热物理—动力机械及工程]