OVERFLOW DUCTS OF A GENERATOR WITH DIRECT INDUCED-DRAFT COOLING

摘要

Operates according to the induced-draft cooling principle, and the main fan 11 attached to the rotor shaft 12 of the generator sucks the cooling medium heated by the heat generating elements of the generator to the outside of the generator, is a cooling medium, times from the generator to carry to the axis essentially cooling device 23 in the vertical direction of the rotor shaft (12), a suction coolant vortex generated at a high speed by the main fan 11 is part of one or more fluid tight cooling medium ( 41) to be accommodated by the cooling duct casing 33 to guide a cooling device 23 via, vortex and is for guiding the cooling medium, effectively preventing a pressure drop cooling duct casing 33, the duct is of one or more overflows having a 33, a duct is accommodated by way of the inlet region (58) upstream of the cooling medium, the narrowed portion 41 is discharged into the cooling duct casing 11 by the main fan 11 to the overflow, and the Baking 41 sikimyeo switch the cooling medium of the circumference, and the cooling medium, and guides the downstream outlet area 59 is placed in the narrowed portion 41 in the flow direction, in which the cooling medium flows back into the cooling duct casing 33 do.