汽轮发电机定子绕组内部蒸发冷却与循环系统

简要介绍采用高绝缘低沸点介质替代水内冷介质，用于汽轮发电机定子绕组内部冷却的原理。着重介绍循环系统结构设计特点，并依照200MW汽轮发电机定子铁心、绕组尺寸建立的实验模型，进行了加电流传热试验。取得的实验数据表明，这种冷却方式较其他冷却方式具有明显的优势，有可能成为本世纪发展巨型汽轮发电机及定子绕组要求内冷电机的一种非常有前途的冷却方式。

The Evaporative Cooling and Circulating System in Turbo-generator's Stator Winding

This paper presents the inner cooling theory that use the high insulating property and low boiling point materials instead of water as coolant in turbo-generator's stator windings.Particularly,introduces the structure and design characters of circulation sys- tem,by building up a model which is based on the 200 MW turbo-generator's stator and winding size,and carrying out the heat- transfer experiment with electricity.The experiment results indicate this cooling system is apparently superior to others.It will become a promising cooling method in this century to develop the giant turbo-generator and other dynamos of which stator windings need the inner cooling system.