副槽及出风口结构尺寸对汽轮发电机转子三维温度场的影响  

Effect of Structure Size of Sub-slot and It's Air Outlet on Three-dimensional Temperature Field for Turbo-generator Rotor

作　　者：路义萍[1] 郑国丽[1] 韩家德[1] 王佐民[1] 

机构地区：[1]哈尔滨理工大学机械动力工程学院,黑龙江省哈尔滨市150080

出　　处：《中国电机工程学报》2011年第26期90-96,共7页Proceedings of the CSEE

基　　金：国家自然科学基金项目(50976027);黑龙江省自然科学基金项目(E200807)~~

摘　　要：以某大型空冷汽轮发电机转子为例,建立了护环以及风路最长的半个转子线圈的三维物理模型,采用计算流体动力学方法,研究本体部分的风道结构,如副槽中心截面高度、槽楔出风口直径大小分布对转子三维温度场的影响。结果表明:根据流量分布情况预测温度分布会使设计值与实际存在偏差,应根据具体的仿真计算结果确定风道结构。针对该文电机采用的风路布置方法,副槽采用直槽、槽楔采用等出风口直径更加合理。结论可为大型空冷汽轮发电机转子的通风冷却设计提供理论参考。This paper took an example of a large air-cooled turbine generator rotor and established the whole three- dimensional physical model of single coil of the longest ventilation duct of half a rotor including protective ring. Effect of rotor body ventilation structures, such as the center section height of the sub-slot and slot wedge outlet diameter range distribution on three-dimensional temperature field for rotor was studied according to the computational fluid dynamics method. The results show that, there is difference between the actual and design value according to flow rate distribution predicted temperature distribution. The ventilation structures should be determined based on the specific simulation resuks. For wind road layouts of electric motor in this paper, the straight slot and the same wedge outlet diameter are reasonable. The conclusion will provide theoretical references for design of ventilation cooling of large air-cooled turbo generator rotor.

关 键 词：汽轮发电机 转子 温度场 副槽中心 截面高度 

分 类 号：TM311[电气工程—电机]