摘要
针对灯泡贯流式水轮发电机轴-径向通风结构设计及散热定量计算问题,对SFWG24-88/7820型灯泡贯流式水轮发电机轴-径向通风系统,采用Ansys workbench软件和计算流体动力学分析软件Fluent,应用气动与传热耦合原理,综合考虑气动性能、冷却效率,对灯泡贯流式水轮发电机转子支架径向安放角分别在0°、15°、30°时的轴-径向通风结构进行了热-电-流多场耦合计算,得到了发电机转子支架不同径向安放角下通风冷却系统的温度场和冷却气体流场的流动规律。结果表明:转子支架安放角影响着冷却通道通风性能及散热效率,其中转子支架径向安放角在15°时冷却效果为最优,该研究对于合理设计轴向-径向通风冷却系统的优化及提高水轮发电机散热情况具有重要的参考价值。
To study the axial-radial ventilation of bulb tubular turbine shaft, quantitative thermal calculations were made for a bulb tubular turbine of SFWG24-88/7820, using the aerodynamic software Ansys workbench and the heat transfer and fluid dynamics software FLUENT and considering aerodynamic performance, cooling efficiency, and heat-electricity-flow multi-field coupling. The results show that a rotor bracket placement angle 15° is appropriate in terms of ventilation performance and thermal efficiency of the cooling channel. This study is a useful reference for design and optimization of axial-radial ventilation cooling system and for improvement of turbine generator cooling.
出处
《水力发电学报》
EI
CSCD
北大核心
2013年第3期252-257,共6页
Journal of Hydroelectric Engineering
基金
甘肃省自然科学基金资助项目(1208RJZA293)
关键词
灯泡贯流式水轮发电机
转子支架
通风冷却系统
多场耦合
数值计算
bulb hydrogenerator
rotor bracket
ventilation and cooling systems
coupling analysis
numerical simulation
