Method for protecting gas turbine engine seals

Details Method for protecting gas turbine engine seals Method for protecting gas turbine engine seals

1989-10-12

1992-02-18

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

415116, 60 3929, F01D 508

Patent

active

050888854

ABSTRACT:
A method for preventing rubbing between a gas turbine engine rotor and surrounding annular shroud during transient changes in engine power monitors high rotor speed for determining the existence of a thermal mismatch between the rotor and shroud supporting turbine case (9). The method directs the cooling flow modulating valve (44) to substantially shut off the flow of cooling air to the case (9) for a period of time sufficient to allow the thermal mismatch to pass.

REFERENCES:
patent: 4019320 (1977-04-01), Redinger, Jr. et al.
patent: 4069662 (1978-01-01), Redinger, Jr. et al.
patent: 4304093 (1981-12-01), Schulze
patent: 4329114 (1982-05-01), Johnston et al.
patent: 4487016 (1984-12-01), Schwarz et al.
patent: 4645416 (1987-02-01), Weiner
patent: 4893983 (1990-01-01), McGreeham
patent: 4893984 (1990-01-01), Davison et al.

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