Westinghouse Electric Corporation

Stephen R Reid

Robert E Clark

Dennis R Amos

Roger W Heinig

A method for modifying an original blade supporting disc (8) which is integral with a turbine rotor (2), and which has an original outline, in order to create a modified disc (8) which has an outline different from the original outline and which provides a blade-supporting region (10) of increased size, including the steps of:

Method of modifying turbine rotor discs

In a dynamoelectric machine rotor whose armature has circumferentially spaced teeth defining therebetween coil slots in which coils are disposed and which are closed by coil wedges provided with shoulders which engage armature tooth projections formed at the radially outer ends of the armature teeth to retain the slot wedges and the coils in the coil slots, the shoulders of the coil slots have self-lubricating material structures disposed thereon by which they are in engagement with armature tooth projections for the transmission of centrifugal forces generated by the coils and slot wedges to the armature teeth through the self-lubricating material structure thereby greatly reducing armature tooth peak stresses.

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Newark, DE, United States of America

Stephen R Reid