中国电机工程学报2012，Vol.32Issue(9)：132-139,8.
大型水轮发电机转子旋转状态下磁极间流体流动与温度场分析
Fluid Flow and Temperature Field Analysis Between Two Poles of a Large Air-cooled Hydro-generator Rotor in Rotation
摘要
Abstract
Taken a 250 MW air-cooled large hydro- generator as an example, the three-dimensional flow-heat transfer coupling model of the fluid and temperature was established, and the fluid and temperature fields of half axial rotors were calculated using the conjugated heat transfer law. Then the influence of fluid flow shape to cooling performance of excitation windings, and the change regularity of the vortex under different inlet flow situations between two poles were analyzed. Additionally, a windshield structure was added between two poles in order to reduce the inhibition effect of vortices to rotor cooling. After calculation, it can be proved that the windshield structure could reduce the inhibition effect. So the high temperature rise of excitation windings could be controlled effectively, and the operation reliability of the large hydro-generator rotor is improved.关键词
水轮发电机/转子/温度场/流体场/涡流Key words
hydro-generator/rotor/temperature field/fluidfield/vortices分类
信息技术与安全科学引用本文复制引用
李伟如,陈玉红,霍菲阳,张奕黄..大型水轮发电机转子旋转状态下磁极间流体流动与温度场分析[J].中国电机工程学报,2012,32(9):132-139,8.基金项目
国家重点科技支撑计划项目（2007BAA05800）. （）
