Sealing a hub cavity of an exhaust casing in a turbomachine
AssigneeSnecma
InventorsXavier Firmin Camille Jean LESCURE, Aurelien Rene-Pierre Massot, Sebastien Jean Laurent Prestel, Christian Rene Schnell
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Abstract
The exhaust casing of a turbomachine includes a cylindrical jacket for guiding a flow of exhaust gas and for defining a hub cavity inside the casing, the jacket including at its ends an annular flange and a radial annular portion extending inwards and formed with an annular rim that is designed to be received in an annular groove of the inner wall of the exhaust casing to close the hub cavity in substantially sealed manner.
Claims10
A turbomachine exhaust casing comprising two coaxial cylindrical walls, respectively a radially inner wall and a radially outer wall, the walls being interconnected by radial arms, and a cylindrical jacket secured to the downstream end of the radially inner wall and co-operating with the radially inner wall to define a hub cavity and co-operating with the radially outer wall to define a flow space for exhaust gas, the upstream end of the cylindrical jacket including a radial annular portion extending towards the axis of the turbomachine, wherein the radial annular portion of the jacket includes at its inner end an annular rim that co-operates with the inner cylindrical wall of the exhaust casing by sliding radially in substantially sealed manner.
Dependencies are inferred from the claim text.