桐子林水电站发电机转子磁轭叠片工艺

Laminated Assembly Technique of the Generators Rotor Yoke of Tongzilin Hydropower Station

桐子林水电站发电机转子磁轭为整体结构,磁轭分为三次叠装并预压两次。磁轭采用磁轭键,扭矩键和加强键进行固定。叠片时不设临时叠片螺杆,直接安装永久定位螺杆。叠片过程采用特殊的方式,利用磁轭片本身形成通风沟。在磁轭热打键工序过程中,要严格控制温度变化,防止转子中心体发生形变。这里详细介绍了桐子林水电站转子磁轭装配的施工工艺及具体的施工步骤,在施工过程中总结出了一些可行的经验,提高了转子磁轭装配的质量,为机组的安全运行提供了质量保障。

Generator rotor yoke of Tongzilin hydropower station is overall structure. Rotor yoke laminated assenmbly process is divided into three times and it need to be preloaded after assenmbly every time. Rotor yoke is fixed by rotor rim key, torque key and reinforce key. Permanent positioning screw is used instead of temporary screw in assembly process. There is a special way is used in laminated assembly process that form Ventilation channels by themselves. In the process of rotor yoke thermal keying installation,temperature changes should be strictly controlled. This is to prevent rotor center part deformation. This paper details generator rotor yoke construction technology and specific construction steps of Tongzilin hydropower station. Some possible experience is summed up in the process of construction. It improves the quality of rotor yoke laminated assembly and provides the quality guarantee for the safe operation of the unit.