节流调节型汽轮机转子热应力预估方法

Prediction Method of Rotor Thermal Stress for Throttle-type Steam Turbines

通过实例介绍了一种节流调节型汽轮机转子热应力预估方法,可根据预定的功率要求和运行方式,针对预估的关键参数等的变化曲线计算出预估的热应力变化曲线,用以提示运行操作人员预知操作后果,提前调整运行参数,提高运行水平,为汽轮机转子的热应力优化控制和汽轮机变负荷运行的安全性提供了技术保障。

An example of the thermal stress prediction method of the throttle-regulated steam turbine rotor is presented.The predicted thermal stress curve can be calculated according to the preset power requirement and operation mode and the predicted critical parameters.It is suggested that the operators can predict the operation results,adjust the operation parameters in advance and raise the operation level,thus providing the technical guarantee for the thermal stress optimization control and the safety of the steam turbine rotor load operation.