Rotary kinetic fluid motors or pumps – With passage in blade – vane – shaft or rotary distributor...
Patent
1991-05-13
1992-06-30
Kwon, John T.
Rotary kinetic fluid motors or pumps
With passage in blade, vane, shaft or rotary distributor...
415116, 415914, F01D 518
Patent
active
051257947
ABSTRACT:
An impulse turbine stage comprising a set (1) of fixed vanes (2) fixed to the stator (3) of the turbine and supporting a diaphragm (4), followed by a set (7) of moving vanes (8) mounted on a disc (9) fixed to the rotor (6) of the turbine, the stage being characterized in that said disk (9) is provided with through ducts (12) parallel to the axis of the rotor (6) and in that the inlets to the ducts (12) opening out into the gap between the diaphragm (6) and the disk (9) are provided with scoops (15) open sideways in the direction of rotation to direct fluid into the ducts (12). The invention serves to reduce the secondary losses of an impulse turbine.
REFERENCES:
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patent: 4666368 (1987-05-01), Hook, Jr. et al.
patent: 4674955 (1987-06-01), Howe et al.
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patent: 4761116 (1988-08-01), Braddy et al.
patent: 4882902 (1989-11-01), Reigel et al.
W. Traupel: "Termische Turbomaschinen" 1977, Springer Verlag, Berlin.
Power, vol. 133, No. 6, Jun. 1989, New York, USA: "Steam turbines and auxiliaries."
GEC Alsthom SA
Kwon John T.
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