Floating seal for a variable area turbine nozzle

Details Floating seal for a variable area turbine nozzle Floating seal for a variable area turbine nozzle

1977-09-19

1980-03-18

Casaregola, Louis J.

Rotary kinetic fluid motors or pumps

With passage in blade, vane, shaft or rotary distributor...

415117, 415160, 415208, 415217, 277 27, F01D 902, F16J 1516

Patent

active

041937384

ABSTRACT:
An improved floating seal is provided to minimize leakage around the ends of a variable area turbine stator nozzle for use in cooperation with a circumscribing shroud. The seal is contoured to float within a pocket formed in the end of the nozzle vane which extends to the vane trailing edge. The forward end of the seal is forced into engagement with the shroud by the pressure of cooling air from within the vane. A seal surface attached to the trailing edge of the seal and projecting laterally of the vane utilizes the differential pressure across the vane airfoil surfaces to hold the trailing edge of the seal into engagement with the shroud. The improved floating seal reduces vane end leakage experienced by prior art floating seals.

REFERENCES:
patent: 3101926 (1963-08-01), Weber
patent: 3117716 (1964-01-01), Wernicke
patent: 3601497 (1971-08-01), Mayo

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