Steam cooled blade

Details Steam cooled blade Steam cooled blade

1997-05-22

1999-02-23

Kwon, John

Rotary kinetic fluid motors or pumps

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

416 97R, F04D 2938

Patent

active

058736956

ABSTRACT:
A steam cooled blade operating in a high temperature gas with a high cooling effect on a trailing edge portion has an impingement plate, disposed in the blade lengthwise direction within a trailing edge side cooling passage formed on a trailing edge side of a moving blade. The impingement plate partitions the trailing edge side cooling passage into a convection cooling steam passage, into which steam is introduced, and an impingement cooling steam passage, formed along a trailing edge of the moving blade. The steam cooled blade further has a by-pass passage 14 for joining the steam, after it is used for cooling the moving blade, flowing from a blade tip side of the impingement cooling steam passage with the steam flowing to a leading edge direction of the moving blade from the convection cooling steam passage.

REFERENCES:
patent: 3628885 (1971-12-01), Sidenstick et al.
patent: 4940388 (1990-07-01), Lilleker et al.
patent: 4992026 (1991-02-01), Ohtomo et al.
patent: 5203873 (1993-04-01), Corsmeier et al.
patent: 5387085 (1995-02-01), Thomas, Jr. et al.

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