文章根据牡丹江第二发电厂#7机组调峰运行的试验数据,运用九节点等参单元的有限元计算程序,对国产200MW汽轮机高、中压转子在不同变负荷率下进行了温度场和热应力场的数值计算,并计算了低负荷调峰方式下滑压运行时的转子低周疲劳寿命损耗,为确定该型机组的最佳低负荷调峰运行曲线提供了理论依据。 Based on the experimental data of peak load operation of Unit # 7 in Mudanjiang No. 2 Power Plant and the finite element method of the nine-node isoparametric unit, the temperature and heat of high and medium pressure rotors of domestic 200MW steam turbine under different load rates The numerical calculation of the stress field and the calculation of the low-cycle fatigue life loss of the rotor under the condition of low-load peak-shaving are given, which provides a theoretical basis for determining the optimal low-load peak-shifting operation curve of the unit.