Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner
Patent
1979-08-09
1980-11-04
Gilreath, Stanley N.
Rotary kinetic fluid motors or pumps
Selectively adjustable vane or working fluid control means
Upstream of runner
415147, 415160, F01B 2502
Patent
active
042317037
ABSTRACT:
Disclosed is a variable guide vane arrangement for use in a high-load compressor having at least one axial-flow stage in turbomachines including gas turbine engines, comprising a plurality of guide vanes positioned radially adjacent one another about a circumference in the axial flow stage of the compressor, each vane having a low-pressure and a high-pressure side during operation; a plurality of generally disk shaped turntable members, each of the vanes being secured at its outer end to one of the turntable members and each of the turntable members being rotatably mounted about the circumference, the diameter of each of the turntable members being greater than the spacing between adjacent guide vanes; and each of the turntable members being generally round and having a cut-out portion on the side adjacent to the low-pressure side of the guide vane secured thereto. The cut-out portion is formed by first, second and third arcs which merge together to form an edge surface adapted to closely abut the arcuate circumference of the next adjacent turntable member at all rotational settings of the guide vanes. The surface of each of the turntable members opposite to the side to which said guide vane is secured comprises a cone-shape having an apex angle equal to approximately 180.degree.-360.degree./Z, wherein Z is the number of the guide vanes positioned about the circumference.
REFERENCES:
patent: 2950084 (1960-08-01), Perry
patent: 3284048 (1966-11-01), Tumavicus
patent: 3303992 (1967-02-01), Johnson
patent: 3367628 (1968-02-01), Fitton
patent: 3542484 (1970-11-01), Mason
patent: 3674377 (1972-07-01), Trappmann
patent: 3685921 (1972-08-01), DeKeyser
Gilreath Stanley N.
Motoren- und Turbinen-Union Muenchen GmbH
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