Blade cooling air supplying system of gas turbine

Rotary kinetic fluid motors or pumps – With lubricating – sealing – packing or bearing means having...

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415114, 415115, 415116, 415117, 415176, 415180, 4151737, F01D 518, F01D 906

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active

060770341

ABSTRACT:
In the present disclosure, an air pipe extends through a stationary blade between outer and inner shrouds. Further, an air passage is directed to a lower portion of the stationary blade and is communicated with the air pipe so that a serpentine cooling passage is formed. The air enters a cavity from the air passage and is discharged to a gas passage through an air hole, a passage and a seal. Thus, the cavity is sealed at a high pressure. Cooling air is supplied from the air passage to a rotating blade through a cooling air hole, a cooling air chamber, a radial hole and a lower portion of a platform. The stationary blade is cooled by the air through the air passage. The cooling air can be supplied to the rotating blade at a low temperature and a high pressure as they are. Accordingly, the air can be also supplied to the rotating blade when a rotor is cooled by vapor.

REFERENCES:
patent: 2919891 (1960-01-01), Oliver
patent: 3945758 (1976-03-01), Lee
patent: 4113406 (1978-09-01), Lee et al.
patent: 5352087 (1994-10-01), Antonellis
patent: 5488825 (1996-02-01), Davis et al.

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