Integral swirl knife edge injection assembly

Details Integral swirl knife edge injection assembly Integral swirl knife edge injection assembly

2005-04-26

2005-04-26

Trieu, Thai-Ba (Department: 3748)

Rotary kinetic fluid motors or pumps

With diversely oriented inlet or additional inlet for...

C415S115000, C415S117000, C415S173500, C415S174500

Reexamination Certificate

active

06884023

ABSTRACT:
The present invention relates to a system for delivering cooling air to a seal arrangement in a turbine stage of a gas turbine engine. The system comprises at least one vane having a passageway extending from an outer platform of the at least one vane to an inner platform of the at least one vane. A tube insert is positioned within the passageway. The tube insert has an inlet at one end for receiving cooling air from a source of cooling air and an outlet at a second end. A cover assembly is attached to the second end of the tube for receiving cooling air from the tube and delivering the cooling air to the seal arrangement. In a preferred embodiment, the cooling air is pre-swirled in the direction of rotation of a rotor stage of the turbine stage.

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