350MW空冷汽轮发电机通风冷却方案设计研究  

A Study on the Ventilation Cooling Design of DEC 350MW Air Cooled Turbo Generator

作　　者：张海波 周光厚 李阳 Zhang Haibo;Zhou Guanghou;LI Yang(Dongfang Electric Machinery Co.,Ltd.,Deyang,Sichuan,618000,China)

机构地区：[1]东方电气东方电机有限公司,四川德阳618000

出　　处：《装备制造与教育》2020年第2期5-9,16,共6页Equipment Manufacturing and Education

摘　　要：通过总体通风方式的选型论证和计算分析,成功设计了我公司新开发350MW空冷汽轮发电机的通风冷却方案。基于CFD技术的发电机流场和热计算,有效地指导了定转子冷却结构的优化设计,确保了绕组热点温升低于B级温升限值。近期完成的首台机工厂试验获得符合设计预期的温升和效率测量值,证实了多风区鼓风冷却系统应用于该等级空冷机型的可行性。研究内容为东方350MW空冷机型顺利投放市场提供了重要技术保障,也为今后更高容量机型的开发提供参考。According to reasonable lectotype and analysis,the author has successfully designed the ventilation system of newly 350MW air cooled turbo generator.The flow field and thermal analysis based on computational fluid dynamics(CFD)principle is used to guide the optimization of cooling structures and ensure that the temperature rise is under the limit of thermal class B.The measured values obtained from recent factory assembly type test coincide with the design expectations of generator efficiency and temperature rise,confirm the application feasibility of multi-chamber forward flow cooling circuit for 400MVA-class air cooled type.

关 键 词：空冷汽轮发电机 通风冷却设计 通风模型 CFD仿真 温升效率试验 转子全电流温升试验 

分 类 号：TM31[电气工程—电机]