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Title: Aft outer rim seal arrangement

Patent ·
OSTI ID:1178745
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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.

Research Organization:
Siemens Energy, Inc., Orlando, FL (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC26-05NT42644
Assignee:
Siemens Energy, Inc. (Orlando, FL)
Patent Number(s):
9,017,014
Application Number:
13/930,482
OSTI ID:
1178745
Resource Relation:
Patent File Date: 2013 Jun 28
Country of Publication:
United States
Language:
English

References (16)

Air cooled turbine for a gas turbine engine patent September 1982
Labyrinthine turbine-rotor-blade tip seal patent July 1987
Contactless centrifugal seal device for a rotating machine part patent May 1990
Gas turbine blade and disk patent August 1992
Blade cooling air supplying system of gas turbine patent June 2000
Non-contact sealing of gaps in gas turbines patent August 2001
Method and apparatus for purging turbine wheel cavities patent December 2001
Gas turbine disk cavity ingestion inhibitor patent November 2002
Dual coolant turbine blade patent November 2005
Seal arrangement patent July 2007
Turbine blade retainer seal patent July 2007
Deflectors for controlling entry of fluid leakage into the working fluid flowpath of a gas turbine engine patent July 2007
Angel wing seals for turbine blades and methods for selecting stator, rotor and wing seal profiles patent December 2008
Ovate band turbine stage patent August 2009
Compound turbine cooled engine patent June 2010
Gas Turbine Engine Assemblies with Recirculated Hot Gas Ingestion patent-application January 2010

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33 ADVANCED PROPULSION SYSTEMS
42 ENGINEERING