LIQUID-COOLED ROTOR FOR DYNAMOELECTRIC MACHINES

摘要

In a liquid-cooled rotor for large dynamoelectric machines such as turbine generators, electrical connection to the rotor winding is made by longitudinal leads extending from the winding along the rotor shaft. These longitudinal leads are connected by radial leads to axial conductors extending through the bore of the shaft for connection to an exciter or other external source of excitation current. The longitudinal leads extending from the radial leads to the rotor winding are cooled by circulation of a coolant liquid such as water through passages in the leads, the coolant liquid being supplied from the same coolant distribution chamber which supplies liquid to the conductors of the rotor winding. The radial leads are preferably also cooled by circulation of the same coolant liquid which cools the longitudinal leads.