Cooled turbine guide vane

Details Cooled turbine guide vane Cooled turbine guide vane

1996-12-30

1998-06-30

Kwon, John T.

Rotary kinetic fluid motors or pumps

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

416 97R, F04D 2938

Patent

active

057723982

ABSTRACT:
A cooled turbine guide vane comprises a hollow aerodynamic portion between inner and outer platforms. The interior of the aerodynamic portion is partitioned into a leading edge duct and a main cavity in which a perforated tubular member is disposed, being spaced from the intrados and extrados side walls of the vane by longitudinal ribs. The tubular member is divided by a partition into two cavities on the intrados and extrados sides of the partition. A first cooling circuit is constituted by the leading edge duct and the intrados cavity of the tubular member, and a second cooling circuit is constituted by the extrados cavity and a cooling system for the inner platform, both circuits being supplied with air by the same source from the outer platform. Cooling air from each circuit passes through the perforations of the tubular member to impinge on the inside face of the respective side wall of the vane and is then guided towards the trailing edge where it escapes through slits in the trailing edge.

REFERENCES:
patent: 4312624 (1982-01-01), Steinbauer, Jr. et al.
patent: 4413949 (1983-11-01), Scott
patent: 4946346 (1990-08-01), Ito
patent: 5207556 (1993-05-01), Frederick et al.
patent: 5399065 (1995-03-01), Judo et al.

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