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Aft outer rim seal arrangement

United States Patent

April 28, 2015
View the Complete Patent at the US Patent & Trademark Office
U.S. Department of Energy - Visit the Office of the Assistant General Counsel for Technology Transfer & Intellectual Property Website
An outer rim seal arrangement (10), including: an annular rim (70) centered about a longitudinal axis (30) of a rotor disc (31), extending fore and having a fore-end (72), an outward-facing surface (74), and an inward-facing surface (76); a lower angel wing (62) extending aft from a base of a turbine blade (22) and having an aft end (64) disposed radially inward of the rim inward-facing surface to define a lower angel wing seal gap (80); an upper angel wing (66) extending aft from the turbine blade base and having an aft end (68) disposed radially outward of the rim outward-facing surface to define a upper angel wing seal gap (80, 82); and guide vanes (100) disposed on the rim inward-facing surface in the lower angel wing seal gap. Pumping fins (102) may be disposed on the upper angel wing seal aft end in the upper angel wing seal gap.
Lee; Ching-Pang (Cincinnati, OH), Tham; Kok-Mun (Oviedo, FL), Schroeder; Eric (Loveland, OH), Meeroff; Jamie (Cincinnati, OH), Miller, Jr.; Samuel R. (Port St. Lucie, FL), Marra; John J. (Winter Springs, FL), Campbell; Christian X. (Charlotte, NC)
Siemens Energy, Inc. (Orlando, FL)
13/ 930,482
June 28, 2013
STATEMENT REGARDING FEDERALLY SPONSORED DEVELOPMENT Development for this invention was supported in part by Contract No. DE-FC26-05NT42644, awarded by the United States Department of Energy. Accordingly, the United States Government may have certain rights in this invention.