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前言自1975年以来,我们曾对哈尔滨汽轮机厂设计的六十万千瓦汽轮机低压焊接转子及整锻转子的单级叶轮(焊接转子的22级及21级叶轮,整锻转子的22级叶轮)进行过光弹模型实验,测得焊接转子22级及21级叶轮轮盘中面的应力及边界应力并获得最大应力的部位与大小。(详见“六十万千瓦汽轮机接低压转焊子模型光弹实验应力分析”一文)。对整锻转子的22级叶轮也测得其中面的应力及内径边界应力。对转子的强度设计提出了改进意见。这次又根据设计部门改型后的焊接转子与整锻转子进行了双级叶轮的
Foreword Since 1975, we have carried out the low-pressure welded rotor of 600MW steam turbine and the single-stage impeller (squirrel-cage rotor with 22 and 21 stages of welding rotor and 22 stages impeller of swerving rotor) designed by Harbin Turbine Works Through the photoelastic model experiment, the stress and the boundary stress in the middle of the 22nd and 21st stage impellers of the welding rotor were measured and the position and size of the maximum stress were obtained. (For more details, please refer to “An Analysis of Photoelastic Experiment Stress in a Low Pressure Turn-on Weld Model of a 600 MW Turbine”). Twenty-two impellers of an as-cast rotor were also tested for stress on the inside and boundary stresses on the inside. The strength of the rotor design proposed improvements. This time according to the design department after the transformation of the welding rotor and the swage rotor for a two-stage impeller