Leaktight seal of a circular vane stage
AssigneeSociete Nationale d'Etude et de Construction de Moteurs d'Aviation "S.N.E.C.M.A."
InventorsJacques Leveaux, Jacky Serge Naudet
Life of this patent
Estimating the term…
Abstract
A leaktight seal includes plaquettes that are housed between platforms of “hammer legged” vanes and a periphery of a rotor disc. The plaquettes lie above a throat that receives legs between a collar. The plaquettes are completed with heels that also lie between the legs. Centrifugal forces distort the seal and produce excellent leaktightness between the disc and the platforms.
Claims9
A leaktight seal adapted to a circular vane stage with legs that are inserted into a throat formed in a rotatable disc and having upper oblique flanks, said seal comprising:
- a plate divided into plaquettes that are abutted to each other above the throat and that are defined by cutting lines;
- wherein each of the plaquettes has a heel dependent therefrom and is adapted to lay against one of the upper oblique flanks inside the throat;
- and
- wherein said cutting lines include longitudinal lines and circular lines;
- wherein each of the plaquettes forms an obtuse angle with the heel;
- and
- wherein each of the plaquettes join the heel at a joint forming a hinge adjacent to a slot configured to receive an adjoining plaquette and heel.
A leaktight seal adapted to a vane stage with a throat formed in a disc and having internal side flanks, said seal comprising:
- a plate divided into plaquettes that are abutted to each other;
- wherein each of the plaquettes is joined to a heel that is adapted to lay under one of the side flanks of the throat;
- and
- wherein each of the plaquettes forms an obtuse angle with the heel.
A combination, comprising:
- a leaktight seal;
- a circular vane stage with legs;
- and
- a rotatable disc with a throat formed therein and having upper oblique flanks;
- wherein the seal includes a plate divided into plaquettes that are abutted to each other above the throat and that are defined by cutting lines;
- wherein each of the plaquettes has a heel dependent therefrom and lying against one of the upper oblique flanks inside the throat;
- wherein the circular vane stage includes platforms on the rotatable disc;
- wherein the plaquettes lie under the platforms;
- and
- wherein the heels extend between the legs of the circular vane stage.
A combination, comprising:
- a leaktight seal;
- a circular vane stage with legs;
- and
- a rotatable disc with a throat formed therein and having internal side flanks;
- wherein the seal includes a plate divided into plaquettes that are abutted to each other;
- wherein each of the plaquettes is joined to a heel that lies under one of the side flanks of the throat;
- and
- wherein each of the plaquette forms an obtuse angle with the heel.
Dependencies are inferred from the claim text.