应用三维有限元法计算汽轮机转子临界转速和模化长叶片  

Simulation of Long Blades and Calculation of Critical Speeds of the Steam Turbine Rotor by 3D Finite Element Methods

作　　者：王超[1] 王延荣[1] 徐星仲[2] 李宝清[2] 

机构地区：[1]北京航空航天大学能源与动力工程学院,北京100083 [2]北京全四维动力科技有限公司,北京100085

出　　处：《动力工程》2007年第6期840-844,共5页Power Engineering

摘　　要：用三维有限元法对某150 MW汽轮发电机组低压转子的临界转速进行了计算,提出了2种模化长叶片的方法,将计算结果和传统计算方法所得结果以及现场实测数据进行比较,表明所提出的2种模化方法都是可行的,为其它长叶片转子振动计算的有限元三维实体建模提供一定的借鉴作用。The critical speed of the low-pressure rotor of a 150MW steam turbo-generator set has been calculated by the 3D finite element method. Two ways of simulating long blades, used in the mentioned calculation, are proposed. Comparing the calculation results with those obtained by traditional methods, and also with data obtained on site, prove that both ways of simulation are feasible and may thus serve to a certain extent, as a reference for 3D modeling concrete bodies, when using finite element methods for vibration calculating of rotors with long blades.

关 键 词：能源与动力工程 汽轮机 有限元 长叶片川名界转速 

分 类 号：TK263.3[动力工程及工程热物理—动力机械及工程]