一、前言汽轮机的使用寿命管理,就是根据机组的带负荷方式,对汽轮机每次起停及变负荷运行进行寿命分配,并在机组实际运行中控制蒸汽温度的变化率,限制金属部件的热应力,使机组的寿命消耗不超过预分配指标,从而在机组规定的使用年限内,实现最佳安全运行及最佳的经济效益。为了进行汽轮机运行寿命分配,必须根据机组的带负荷方式,对机组的运行小时数、起停及变负荷次数等各项有关参数进行准确预测。并根据机组的实际运行的统计资 I. Introduction The service life management of steam turbine is to allocate the life of each period of start, stop and variable load operation of steam turbines according to the load mode of the unit, and control the rate of change of steam temperature in the actual operation of the unit to limit the thermal stress of metal components , So that the life of the unit consumption does not exceed the pre-distribution targets, thus the crew set the service life, to achieve the best safe operation and the best value for money. In order to carry out the service life allocation of steam turbines, it is necessary to accurately predict the relevant parameters such as the operating hours of the generating units, starting and stopping and changing the load times according to the load modes of the units. And according to the statistics of the actual operation of the unit