蒸发冷却技术应用于大型汽轮发电机的技术可行性.pdfVIP

2008 年 2 月 电 工 技 术 学 报 Vol.23 No. 2 第 23 卷第 2 期 TRANSACTIONS OF CHINA ELECTROTECHNICAL SOCIETY Feb. 2008 蒸发冷却技术应用于大型汽轮 发电机的技术可行性 姚 涛1,2 侯 哲 1,2 顾国彪 1 （1. 中国科学院电工研究所 北京 100080 2. 中国科学院研究生院 北京 100039 ） 摘要 针对大型汽轮发电机的发展要求，介绍了汽轮发电机定子蒸发冷却及转子蒸发冷却的 原理和结构。详尽地分析了蒸发冷却技术应用于大型汽轮发电机的可行性，得出定子浸润式、转 子开放管道式蒸发冷却方案应用于大型汽轮发电机在技术上是可行的结论；同时对汽轮发电机转 子绕组开放管道式蒸发冷却技术进行了模拟实验，实验目的是为了取得开放管道式转子绕组沿半 径方向的温度分布情况，并粗略估计冷却能力，旨在为蒸发冷却汽轮发电机向更大容量发展、探 索新的冷却结构提供技术参考。 关键词：汽轮发电机 蒸发冷却 转子冷却 浸润 开放管道 可行性 中图分类号：TM301.4+1 Application of Evaporative Cooling Technique to Large Turbo Generator Yao Tao1,2 Hou Zhe 1,2 Gu Guobiao 1 （1. Institute of Electrical Engineering CAS Beijing 100080 China 2. Graduate School of the CAS Beijing 100039 China ） Abstract According to the development demand of large turbo generator,this paper introduces the theory and structure of evaporative cooling system of turbo generator’s stator and rotor. After in detail analyzing the technical feasibility of applying evaporative cooling technique to large turbo generator, a conclusion that scheme based on stator soakage evaporative cooling and rotor open channel evaporative cooling is feasible for large turbo generator is obtained. Meanwhile, this paper introduces the simulating experiment of open channel evaporative cooling of turbo generator’s rotor windings. The aim of experiment is to get the temperature distribution of rotor winding in the direction of radius and roughly estimates the power of cooling, aiming at offering technical references for the application of evaporative cooling technique in l