Gas turbine engine with a labyrinth seal having canted pockets and knife edges

A gas turbine engine (10) is provided with turbine sealing structures including knife edge seals (104) which extend at an angle relative to an axial center line (12) of the engine (10). Each knife edge seal (104) is associated with a pocket (114) defined between a radially inner surface and a spaced...

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Bibliographic Details
Main Authors PAOLILLO, ROGER E, MCCUSKER, KEVIN N, WU, CHARLES C, PALMITER, PAGE RUSSELL
Format Patent
LanguageEnglish
French
German
Published 10.09.2008
Subjects
BLASTING
ENGINE PLANTS IN GENERAL
HEATING
INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS
INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04
LIGHTING
MACHINES OR ENGINES IN GENERAL
MECHANICAL ENGINEERING
NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES
STEAM ENGINES
WEAPONS
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Summary:A gas turbine engine (10) is provided with turbine sealing structures including knife edge seals (104) which extend at an angle relative to an axial center line (12) of the engine (10). Each knife edge seal (104) is associated with a pocket (114) defined between a radially inner surface and a spaced radially outer surface. The pockets (114) and their associated knife edge seals (104) create a difficult flow path (X) to prevent leakage into radially inner portions of the turbine section (20, 22).
Bibliography:Application Number: EP20080250747