大型核电汽轮发电机转子通风系统流动特性数值模拟  

Numerical investigation on flow field of the rotor ventilation system for the large-capacity nuclear power turbo-generator

作　　者：张小虎[1] 袁益超[1] 边缘[1] 胡晓红[1] 

机构地区：[1]上海理工大学能源与动力工程学院,上海200093

出　　处：《能源研究与信息》2011年第2期87-94,共8页Energy Research and Information

摘　　要：核电汽轮发电机是核能发电的主要设备之一,其通风冷却性能是影响核电机组安全运行的重要因素。转子采用轴向—径向通风是大型核电汽轮发电机常用的通风系统之一。根据计算流体力学(CFD)的基本原理,对大型核电汽轮发电机转子通风系统的通风结构和性能进行了分析,建立了转子通风系统内冷却气体流动的三维计算模型,确定了相应的边界条件,进行了数值计算和分析,得到了该汽轮发电机转子线圈直线段各通风沟内冷却气体的流量分配规律,气隙内的流场及静压分布规律。研究结果可为汽轮发电机转子通风系统结构优化及温升计算提供参考。The large-capacity nuclear power turbo-generator is one of the basic units of a nuclear power plant.The performance of the ventilation cooling system for the turbo-generator is an important factor affecting the safe operation of nuclear power units.Large-capacity nuclear power turbo-generators generally use rotors with axial-radial ventilation.In this paper,the structure and performance of the rotor ventilation system for a large-capacity nuclear power turbo-generator were analyzed according to the basic principles of computational fluid dynamics（CFD）.A 3D flow model with relevant boundary conditions was established to simulate the cooling gas flow in the rotor ventilation system.Through the calculations,cooling-gas flow distributions and static pressure characteristics in the rotor ventilation system were obtained.The simulation results can give a reference to the structure optimization of the rotor ventilation system and the temperature field calculations.

关 键 词：核电 汽轮发电机 转子通风 流动 数值模拟 

分 类 号：TM311[电气工程—电机]