Sealing device for the free ends of variable stator vanes of a g

Details Sealing device for the free ends of variable stator vanes of a g Sealing device for the free ends of variable stator vanes of a g

1980-07-28

1983-05-31

Hornsby, Harvey C.

Rotary kinetic fluid motors or pumps

Including thermal expansion joint

Radially sliding

415113, 415174, F01D 1108

Patent

active

043858643

ABSTRACT:
A sealing device including a sealing ring extending around the periphery of a gas turbine stator section and located between the stator section and the free ends of the stator vanes. The sealing ring is formed of individual segments movable radially relative to each other. Each two adjacent sealing ring segments have opposed faces, one face presenting projections and the other having correspondingly shaped recesses for accommodating the projections with clearance. Each opposed face has a groove at least as deep as the projection or recess in that face, and a flat plate is located in the opposed grooves. Springs or gas pressure press the sealing ring segments radially outwardly against the free ends of the vanes. The radius of curvature of the ring segments outer surfaces is smaller than that of the vane ends so that the segments and vane ends contact each other over only a portion of their surfaces.

REFERENCES:
patent: 3529906 (1970-09-01), McLaurin
patent: 3999883 (1976-12-01), Nordenson

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