Radially expanding turbine engine exhaust cylinder interface

F - Mech Eng,Light,Heat,Weapons – 01 – D

Patent

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Details

F01D 25/24 (2006.01) F01D 25/30 (2006.01) F02K 1/04 (2006.01) F02K 1/80 (2006.01)

Patent

CA 2617719

Aspects of the invention are directed to an interface (10) between an exhaust cylinder (20) and an exhaust diffuser (22) in a turbine engine. The interface (10) allows relative radial movement of the exhaust diffuser (22) and the exhaust cylinder (20). According to aspects of the invention, the diffuser (22) and the cylinder (20) are operatively connected about their peripheries by a plurality of connecting members, which can be tie rods (40). Each connecting member can be pivotally connected at a first end (42) to a joint bolt (80) affixed to the exhaust cylinder (20) and at a second end (44) to an exhaust diffuser (22). Thus, the connecting members can join the cylinder (20) and the diffuser (22) in the axial direction, while allowing for the differential thermal expansion of the two components. Relative circumferential movement between the cylinder (20) and the diffuser (22) can be reduced by positioning neighboring connecting members at opposing angles in relation to one another.

L'invention concerne une interface (10) entre un cylindre d'échappement (20) et un diffuseur d'échappement (22) dans un moteur à turbine. L'interface (10) permet un mouvement radial relatif du diffuseur d'échappement (22) et du cylindre d'échappement (20). Selon l'invention, le diffuseur (22) et le cylindre (20) sont connectés fonctionnellement par leur périphérie extérieure par une puralité d'organes de connexion qui peuvent être des tirants (40). Chaque organe de connexion peut être connecté de manière pivotante à une première extrémité (42) à un boulon de joint (80) fixé au cylindre d'échappement (20) et à une deuxième extrémité (44) à un diffuseur d'échappement (22). Ainsi, les organes de connexion peuvent relier le cylindre (20) et le diffuseur (22) dans la direction axiale, tout en permettant la dilatation thermique différentielle des deux composants. Un mouvement circonférentiel relatif entre le cylindre (20) et le diffuseur (22) peut être réduit en positionnant des organes de connexion adjacents à des angles opposés l'un par rapport à l'autre.

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