Turbine vane assembly with integrally cast cooling fluid nozzle

Details Turbine vane assembly with integrally cast cooling fluid nozzle Turbine vane assembly with integrally cast cooling fluid nozzle

1992-09-24

1993-06-08

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

415116, F04D 2958

Patent

active

052173488

ABSTRACT:
A gas turbine engine having a turbine vane assembly including an integrally cast cooling fluid nozzle is disclosed. Various construction details are developed which disclose a cooling fluid nozzle including a flow passage having an exit and a wall. In one embodiment, the wall includes an angled leading edge which mates with a circumferentially adjacent trailing edge of an adjacent wall. The leading edge is tapered such that in a most open position of the turbine vane assembly the leading edge and the trailing edge circumferentially align. In a most closed position of the turbine vane assembly, the angled leading edge aligns with the trailing edge such that a step down is created in the circumferentially directed flow of the sealed cavity. The plurality of wall thereby produce a waterfall arrangement within the sealed cavity to reduce the windage losses.

REFERENCES:
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patent: 4659285 (1987-04-01), Kalogeros et al.
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patent: 4752185 (1988-06-01), Butler et al.
patent: 4846628 (1989-07-01), Antonellis
patent: 4869640 (1989-09-01), Schwarz et al.

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