SPACER BLOCK WITH FLOW ADJUSTABLE ELEMENT TO INCREASE WINDING HEAD COOLING IN A DYNAMO ELECTRICAL GENERATOR

摘要

A gas cooled dynamoelectric machine is provided that is comprised of a rotor, a rotor winding comprising axially extending coils and concentric endwindings, and a plurality of spaceblocks located between adjacent endwindings thereby to define a plurality of cavities, each bounded by adjacent spaceblocks and adjacent endwindings. To enhance the heat transfer rate from the copper end turns of the field endwinding region, at least one flow deflector structure is provided on a cavity facing surface of at least one spaceblock for intercepting and redirecting circulating coolant flow towards a central region of the respective cavity.