Patent ID: 8100644
Filing Date: 2012-01-24
Classification: F01D,F05D

Abstract:
1. A turbine stage of a turbomachine, the stage comprising a rotor wheel mounted inside a sectorized ring carried by a turbine casing, and a nozzle situated upstream from the wheel and made up of an annular row of stator vanes, the nozzle including at its downstream end an outer annular rim having fastener means for fastening to the turbine casing, sealing means being provided between the outer rim of the nozzle and the upstream end of the ring to limit the passage of gas in a radial direction between the outer rim of the nozzle and the ring, the stage being characterized in that the sealing means comprise an annular sheet extending substantially radially between the outer rim of the nozzle and the upstream end of the ring, and comprising at its inner periphery and at its outer periphery means for bearing axially against a downstream face of the outer rim of the nozzle, the middle annular portion of said sheet being axially spaced apart from the outer rim of the nozzle and bearing axially against the upstream end of the ring, the sheet being elastically prestressed in the axial direction by the upstream end of the ring.