1450 MW发电机转子通风结构耦合传热分析  

Coupled Heat Transfer Analysis of Ventilation Structure in 1450 MW Rotor of Turbo-Generator

作　　者：李隆键[1] 赵飞飞[1] 

机构地区：[1]低品位能源利用技术及系统教育部重点实验室(重庆大学),重庆400030

出　　处：《工程热物理学报》2013年第2期340-343,共4页Journal of Engineering Thermophysics

基　　金：国家科技重大专项课题(No.2010zx06004-013-04)

摘　　要：建立了大型汽轮发电机转子单元通风结构耦合传热的物理数学模型,进行了流场、温度场数值模拟计算.针对单、双桥两种通风结构的流动传热特性进行了分析和比较。研究表明,双桥通风结构较单桥结构增大了风沟内气流扰动,其传热性能优于单桥通风结构。在相同工况条件下,双桥通风结构转子线圈温升较单桥结构的低3.5～5.5 K。Physical model and mathematical model of coupled heat transfer of ventilation structure in unit rotor of turbo-generator was established. Flow field and temperature field was calculated with numerical simulation method. Flow and heat transfer characteristics were analyzed and compared for single and double bridges about ventilation structure. Research shows that, the air disturbance in ventilation structure of double bridge was increased compared to single bridge; Heat transfer performance of double bridge was better than single bridge. In the same conditions, the winding temperature of double bridge will be lower 3.5-5.5 K than the single bridge.

关 键 词：汽轮发电机 转子通风结构 耦合传热 数值模拟 

分 类 号：TK124[动力工程及工程热物理—工程热物理]