Fluid seal

Details Fluid seal Fluid seal

1998-08-17

2000-09-12

Knight, Anthony

Seal for a joint or juncture

Seal between relatively movable parts

Close proximity seal

277415, 277421, F01D 1108

Patent

active

06116612&

ABSTRACT:
An annular seal is provided between a turbine rotor disc and the adjacent static structure. The seal comprises rotor fins extending from the turbine disc for rotation therewith and an abradable honeycomb layer radially outward of the rotor fins. The abradable honeycomb layer is located on the inner diameter of a sealing ring attached to the static structure. The sealing ring is moveable in an axial direction so that in operation the honeycomb has one axial position for transient conditions and an alternative axial position for stabilized running. The seal clearance can thus be optimised at the two axial positions reducing the leakage flow through the seal.

REFERENCES:
patent: 2686657 (1954-08-01), Kalintinsky
patent: 3606349 (1971-09-01), Petrie et al.
patent: 3971563 (1976-07-01), Sugimura
patent: 4606652 (1986-08-01), Swearingen
patent: 4641842 (1987-02-01), Katakoa
patent: 5314304 (1994-05-01), Wiebe

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