600 MW 超超临界汽轮机转子热应力在线监测模型的研究

摘要

对超超临界600 MW机组调节级叶轮根部的温度场和应力场进行了数学解析建模，将得到的温度场和应力场的解析求解结果与有限元结果进行了比对，解析解和有限元解的结果有很好的一致性，结果表明，本数学模型具有较高的精度，为超超临界汽轮机转子热应力在线监测程序的开发提供了有益的参考。%The temperature field and stress field of impeller root of Ultra supercritical 600MW turbine’s governing stage’s model was built through mathematical analytical method , and the results of temperature field and stress field which we have got are compared with the finite element results , the results of analytical solution are in good agreement with the finite element solution.Results show that , this model has high precision , which provides a useful reference to develop the program of the on-line monitoring of Ultra supercritical steam turbine rotor ’ s thermal stress .