Guide blade for steam turbines

Details Guide blade for steam turbines Guide blade for steam turbines

1998-03-02

1999-12-28

Look, Edward K.

Rotary kinetic fluid motors or pumps

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

4151693, 416231R, 416224, 416231B, 411349, 411350, 411549, 411550, 411552, 411553, F01D 514

Patent

active

060072962

ABSTRACT:
A guide blade for steam turbines, having in the blade interior a cavity (18) to which a vacuum is applied, is provided with an opening (3) for drawing off fluid in the region of the trailing blade edge (4). This opening is provided with a porous cover (7). The cover is dimensioned in such a way that, during operation, all its capillaries are filled with the fluid to be drawn off. It is anchored in the guide blade by a mechanical fastening element (20).
The mechanical fastening element (20) is a spring-loaded quick-acting lock and comprises a bush (21) which fixes the cover in the blade opening (3) and projects with its cylindrical part (24) into the blade cavity (18), and a pin (25) which is axially displaceable in the interior of the bush, is equipped with spring means (26) and is provided at its end with a cap (28), which rests on the inner wall of the blade.

REFERENCES:
patent: 741776 (1903-10-01), Dodge
patent: 3301529 (1967-01-01), Wood
patent: 3778190 (1973-12-01), Ouellette
patent: 3881842 (1975-05-01), Kosyak et al.
patent: 4738585 (1988-04-01), Von Bockh
patent: 4762437 (1988-08-01), Mitomi
patent: 4812097 (1989-03-01), Moulton
patent: 4902181 (1990-02-01), Moulton
patent: 5267828 (1993-12-01), Lenhart et al.
patent: 5718549 (1998-02-01), Noda et al.

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