Vane cooling structure

Details Vane cooling structure Vane cooling structure

1979-09-14

1981-09-08

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

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

415136, 415178, 415191, F01D 902

Patent

active

042882010

ABSTRACT:
The present invention provides improved concepts for making judicious use of vane cooling air without introducing mechanical stresses or differential growth induced deformation into the structure. Maintenance of an adequate pressure differential across a tubular insert without inhibiting thermal growth is sought and a specific object is to closely control the leakage of cooling air between a slidable end of the insert and the interior of the vane.
In one effective embodiment incorporating concepts of the present invention, a tubular insert 26 is affixed to the vane at one end 32 thereof and is free to slide along the interior surface 28 of the vane at the other end 34 thereof. Leakage of cooling air between the insert and the vane is controlled by closely toleranced correspondence of a closure plate 36 at the slidable end of the insert with a cooling air supply tube 38 which penetrates the closure tube.

REFERENCES:
patent: 2847185 (1958-08-01), Petrie et al.
patent: 3301527 (1967-01-01), Kercher
patent: 3471126 (1969-10-01), Abild
patent: 3540810 (1970-11-01), Kercher
patent: 3767322 (1973-10-01), Durgin et al.
patent: 3768921 (1973-10-01), Brown et al.

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