Multistage hydraulic machine system and a method for controlling

Details Multistage hydraulic machine system and a method for controlling Multistage hydraulic machine system and a method for controlling

1979-05-03

1981-07-28

Christian, Leonard D.

Rotary kinetic fluid motors or pumps

Method of operation

415163, F01D 1900, F01D 2712

Patent

active

042807883

ABSTRACT:
Disclosed is a multistage hydraulic machine system which comprises a multistage hydraulic pump/pump-turbine including a highest-pressure stage having movable guide vanes with variable opening of water path arranged round a runner and a lower-pressure stage or stages having fixed guide vanes with fixed opening of water path arranged round a runner or runners, and a control unit for controlling the operation of the multistage hydraulic pump/pump-turbine, whereby the opening of the movable guide vanes is controlled by the control unit so that such opening is larger than that of the fixed guide vanes for a large-flow normal operation of the pump/pump-turbine and smaller for a small-flow normal operation.

REFERENCES:
patent: 3756739 (1973-09-01), Boussuges
patent: 3799694 (1974-03-01), Duzan
patent: 3957392 (1976-05-01), Blackburn
patent: 3990810 (1976-11-01), Amos et al.

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