Fluid reaction surfaces (i.e. – impellers) – With heating – cooling or thermal insulation means
Patent
1975-03-03
1976-11-09
Powell, Jr., Everette A.
Fluid reaction surfaces (i.e., impellers)
With heating, cooling or thermal insulation means
416 97A, 415115, F01D 518
Patent
active
039908127
ABSTRACT:
An engine is shown having a system for providing cooling fluid flowing radially inward to turbine blades on a disk while providing sealing means between the blade roots and cooperating disk slots and providing means for retaining the turbine blades on their disk. The cooling system includes stationary passageway means for directing a coolant flow from a source through an annular axial passageway where it is given a swirling velocity in the direction of rotation in the bladed rotor by means of grooves. The cooling fluid is then discharged from substantially radial passageways in the stationary passageway which are directed at an angle so that the coolant peripheral velocity essentially matches that of the rotating shaft on which the bladed rotor is located. Openings in the rotating shaft located radially inward from the substantially radial passageways in the stationary passageway means permit this flow to enter an annular passageway in this member where it is directed to the blades. Cooling air is injected at the inner diameter of a full ring coverplate and is directed to a hole in each of the small coverplates which permits the cooling air to enter the inside of the hollow blade.
REFERENCES:
patent: 2738949 (1956-03-01), Wilkinson
patent: 2951340 (1960-09-01), Howald
patent: 3565545 (1971-02-01), Bobo et al.
patent: 3602605 (1971-08-01), Lee et al.
patent: 3712756 (1973-01-01), Kalikow et al.
patent: 3768921 (1973-10-01), Brown et al.
patent: 3814539 (1974-06-01), Klompas
patent: 3832090 (1974-08-01), Matto
McCarthy Jack N.
Powell Jr. Everette A.
United Technologies Corporation
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