Flow-adjusted hydraulic rotary machine

Rotary kinetic fluid motors or pumps – Selectively adjustable vane or working fluid control means – Upstream of runner

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415211, F04D 2956

Patent

active

043559530

ABSTRACT:
Adjustable guide vanes (70) are circumferentially disposed about a rotor (40) at each stage of a multi-stage turbine (10) and are slidably connected to pairs of rotatable vane rings (61, 62) at each stage, the rings and guide vanes defining nozzles (82) leading from a scroll case (30) to the rotor at each stage, the nozzles having contoured surfaces (80) for minimizing hydraulic losses. Yoke mechanisms (104, 106) and interconnecting members (98, 100) link each pair of rotatable vane rings to a single actuator shaft (90) for synchronous adjustment of the positions of the guide vanes to vary the cross-sectional areas of the nozzles thereby permitting operation at optimum efficiency in response to changing flow rates.

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patent: 2371706 (1945-03-01), Planiol
patent: 2733853 (1956-02-01), Trumpler
patent: 2976013 (1961-03-01), Hunter
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patent: 3588269 (1971-06-01), Wall
patent: 3639075 (1972-02-01), Erwin et al.
patent: 3756739 (1973-09-01), Boussuges
patent: 3936223 (1976-02-01), Baghdadi
patent: 3992128 (1976-11-01), Lunsford et al.

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