Damping arrangement for guide vanes

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

Patent

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Details

F01D 5/26 (2006.01) F01D 11/00 (2006.01)

Patent

CA 2555578

The invention relates to a damping arrangement for guide vanes, especially for guide vanes of a gas turbine or a aircraft engine. In the inventive damping arrangement, guide vanes (28) pertaining to a guide vane grid or a guide vane ring (27) are fixed to a housing with the radially outer ends (29) thereof. The radially inner ends (30) of the guide vanes (28) form an inner covering strip (31), at least one sealing carrier (32) being fixed to the inner covering strip (31) of the guide vanes (28). At least one spring element (34) is arranged between the inner covering strip (31) of the guide vanes (28) and the or each sealing carrier (32). According to the invention, the or each spring element (34) is embodied as a leaf spring.

L'invention concerne un système amortisseur pour aubes directrices, notamment pour aubes directrices de turbine à gaz ou de groupe motopropulseur. Pour ce qui est du système amortisseur, les aubes directrices (28) d'une grille d'aubes directrices ou d'une couronne d'aubes directrices (27) sont fixées sur un boîtier, par des leurs extrémités situées à l'extérieur (29) dans le sens radial. Les extrémités situées à l'intérieur (30) dans le sens radial, des aubes directrices (28), forment une bande de recouvrement intérieure (31). Au moins un support de garniture d'étanchéité (32) est fixé sur la bande de recouvrement intérieure (31) des aubes directrices (28). Au moins un élément à effet ressort (34) est disposé entre la bande de recouvrement intérieure (31) des aubes directrices (28) et le ou chaque support de garniture d'étanchéité (32). Selon l'invention, le ou chaque élément à effet ressort (34) se présente sous forme de ressort à lame.

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