Gas turbine engine cooling system and method

Details Gas turbine engine cooling system and method Gas turbine engine cooling system and method

F - Mech Eng,Light,Heat,Weapons

02

C

F02C 7/12 (2006.01)

Patent

CA 2605391

Fuel (12) supplied to a rotary fluid trap (42) is centrifugally accelerated within a first cavity (46) adjacent a first side (48) of a rotor (24), and is then directed though a plurality of first passages (66) extending through the rotor (24) between and proximate to the blades (26), and shaped so as to at least partially conform to the shape of the blades (26). Second passages (100) extend within the blades (26) from the first passages (66) and terminate within associated cavities (110) proximate to the tips (112) of the blades (26). Relatively cooler fuel (12.2) in the first passages (66) is thermosiphon exchanged for relatively hotter fuel (12.3) in the second passages (100) so as to cool the blades (26). The heated fuel (12.3) flows into a second cavity (74) adjacent to a second side (72) of the rotor (24) and is discharged from the rotating frame of reference directly into the combustion chamber (16) through a second rotary fluid trap (96). A separate fuel distribution circuit (130) is used for starting and warm-up.

L'invention concerne un combustible (12) alimenté dans un logement de fluide rotatif (42), et accéléré de manière centrifuge dans une pluralité de premiers passages (66) s'étendant dans le rotor (24) entre et près des ailettes (26), et d'une forme au moins partiellement conforme à la forme des ailettes (26). Des seconds passages (100) s'étendent dans les ailettes (26) depuis les premiers passages (66) et se terminent dans des cavités associées (110) près des extrémités (112) des ailettes (26). Du combustible relativement plus froid (12.2) dans les premiers passages est échangé par thermosiphon avec du combustible relativement plus chaud (12.3) dans les seconds passages (100) de manière à refroidir les ailettes (26). Le combustible chauffé (12.3) s'écoule dans une seconde cavité (74) adjacente à un second côté (72) du rotor (24), et est déchargé de la structure rotative de référence directement dans la chambre (16) de combustion à travers un second logement de fluide rotatif (96). Un circuit (130) de distribution de fluide séparé est utilisé pour le démarrage et le réchauffage.

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