Turbine for a turbine engine
AssigneeSafran Aircraft Engines
InventorsOlivier Arnaud Fabien Lambert, Franck Robert Drouet, Gaël Frédéric Claude Cyrille Evain
Life of this patent
Estimating the term…
Abstract
The invention relates to a turbine for a turbine engine, having a stator and a rotor comprising a rotor wheel having vanes the radially external periphery of which comprises at least one lip which radially extends outwards, with sealing means radially extending about the vanes and comprising a ring. The radially external end of the lip cooperates with said ring so as to form a seal of the labyrinth type.
Claims9
A turbine for a turbine engine, the turbine having a stator and a rotor comprising a rotor wheel having vanes the radially external periphery of which comprises at least one lip which radially extends outwards, with sealing means radially extending about the vanes and comprising a sealing ring;
- with the radially external end of the lip cooperating with said sealing ring so as to form a seal of the labyrinth type, wherein said sealing ring comprises at least one first portion and one second portion radially offset relative to one another, with the first portion and/or the second portion defining a groove wherein the lip is inserted, with the first portion and/or the second portion each cooperating with at least one lip of the vanes axially located opposite said first and second portions, with the first portion comprising a first protruding zone engaged in a form-fitting manner in the axial direction into a first recessed zone of the second portion, with the stator comprising means for holding the first and second portions in position relative to the stator,
- wherein the position-holding means comprise a stop for radially bearing the first portion and means for tightening the second portion against the stator, with the first portion being positioned upstream of the second portion.
Dependencies are inferred from the claim text.