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Turbine inter-disk cavity cooling air compressor

United States Patent

5,704,764
January 6, 1998
View the Complete Patent at the US Patent & Trademark Office
The inter-disk cavity between turbine rotor disks is used to pressurize cooling air. A plurality of ridges extend radially outwardly over the face of the rotor disks. When the rotor disks are rotated, the ridges cause the inter-disk cavity to compress air coolant flowing through the inter-disk cavity en route to the rotor blades. The ridges eliminate the need for an external compressor to pressurize the air coolant.
Chupp; Raymond E. (Oviedo, FL), Little; David A. (Oviedo, FL)
Westinghouse Electric Corporation (Pittsburgh, PA)
08/ 730,720
October 7, 1996
STATEMENT OF GOVERNMENT INTEREST The United States Government has rights in this invention pursuant to Contract No. DE-AC21-93MC30247 with the Department of Energy.