COOLING STRUCTURE OF BULB HYDRAULIC TURBINE GENERATOR AND COOLING METHOD OF BULB HYDRAULIC TURBINE GENERATOR

摘要

The present invention relates to a cooling structure and a cooling method of a bulb water turbine generator, and more specifically, to a cooling structure and a cooling method of a bulb water turbine generator, wherein a plurality of through holes penetrating a yoke of a rotor unit are formed and a plurality of fans are formed at a lower end of the through holes to allow fluid introduced into the rotor unit to flow along the inner curved surface of the fan and to come out of the rotor unit through the through holes, thereby increasing the cooling efficiency of the inner surface of the rotor unit and the yoke. The present invention provides the following effects. According to the present invention, most of cold fluid introduced into the rotor unit can be discharged in the direction of the outer circumferential surface of the rotor unit, thereby improving the cooling efficiency of the rotor unit and a stator unit.