The cold startup process of steam turbine rotor was analyzed.The calculation program of convective heat transfer coefficient was compiled and the two-dimensional axisymmetric model of rotor was established.The transient temperature field and stress field during the cold startup process of rotor were simulated by finite element method.The distribution of temperature field and stress field and its variation with time were obtained.Through the stress field calculation and life loss analysis of the rotor under different temperature rise rates,a reasonable temperature rise rate value was obtained,and the start-up curve was optimized,which has practical significance for the long-term safe operation of the steam turbine.
关键词
汽轮机转子/冷态启动/温度场/应力场
Key words
turbine rotor/cold startup/temperature field/stress field
维普
万方数据