前言转子是汽轮机的心脏。近几年来,随着我国社会主义建设事业的飞速发展,汽轮发电机组的单机容量不断增加,目前正在试制60万kW机组。这样,转子的结构尺寸相应地增大,离心载荷显著增加,同时结构形式也更加复杂。在这种情况下,为了满足当前工作的需要,对于转子的强度设计和应力状态的研究,就成为必须解决的课题之一。最近,我们对哈尔滨汽轮机厂正在设计的60万kW汽轮机低压焊接转子进行了光弹性模型实验。由于实验设备的限制以及模型制作工艺较复杂,加之时间紧迫,仅对末级叶轮(4×22级)和次末级叶轮(4×21级)分别作了两个模型,并进行了光弹性实验。通过实验,把转子 The rotor is the heart of a steam turbine. In recent years, with the rapid development of China’s socialist construction, the unit capacity of steam turbine generating units has been continuously increasing. At present, a trial production of a 600,000 kW unit is under way. In this way, the size of the rotor increases correspondingly, the centrifugal load increases significantly, and the structure is also more complicated. In this case, in order to meet the needs of the current work, research on the strength design and stress state of the rotor has become one of the issues that must be solved. Recently, we conducted a photoelastic model experiment on the low-pressure welded rotor of 600 MW turbines being designed by Harbin Turbine Works. Due to the limitations of the experimental equipment and the complexity of the model making process, combined with the time constraints, two models were made respectively for the final stage impeller (4 × 22 stages) and the second stage impeller (stage 4 × 21), and photoelastic experiment. Through experiments, put the rotor