Patent ID: 7214034

Claim:
A turbomachine blade-wheel comprising: a disk presenting a plurality of substantially axial slots on its periphery; a plurality of blades having roots retained in said slots, and which blades present platforms for defining a radially inner side of a stream of gas and upstream and downstream radial walls that extend from said platforms towards the periphery of said disk; inter-blade cavities defined by said platforms and the periphery of said disk; and sealing devices configured to seal the inter-blade spaces, the sealing devices including liners having edges that flare radially inwards and that are disposed in said cavities against the walls of the platforms of two adjacent blades; wherein each said liner presents an elastic zone on one of its upstream and downstream flared edges, and the radial walls adjacent to said edge are connected to the platforms by inside surfaces that are inclined relative to a radial plane, and against which edges said elastic zone bears, such that said elastic zone is configured to move radially inwards in an event of said wheel ceasing to rotate, and said elastic zone is configured to move radially outwards under action of centrifugal forces to urge said liner to move axially towards the radial walls distant from said elastic zone to improve sealing in said elastic zone.