Multi-stage hydraulic machine and control method for a multi-sta

Details Multi-stage hydraulic machine and control method for a multi-sta Multi-stage hydraulic machine and control method for a multi-sta

1982-01-27

1985-08-27

Coe, Philip R.

Rotary kinetic fluid motors or pumps

Method of operation

415500, F01D 1700

Patent

active

045375585

ABSTRACT:
A multi-stage hydraulic machine comprises a rotatable shaft, a plurality of runners fixed to the shaft and arranged from a highest-pressure stage to a lowest-pressure stage, runner chambers which, respectively, house the runners, a return channel for connecting adjacent ones of the runner chambers with each other, movable wicket gates provided at least in the highest-pressure stage and capable of moving between a position in which the movable wicket gates block the channel and a position in which the movable wicket gates open the channel, a casing connected to the highest-pressure stage, and an inlet valve disposed between the casing and a penstock.

REFERENCES:
patent: 3507603 (1970-04-01), von Widdern
patent: 3658436 (1972-04-01), Oishi et al.
patent: 3890059 (1975-06-01), Takase
patent: 3945254 (1976-03-01), Hagiya et al.
patent: 4179237 (1979-12-01), Ogiwara et al.
patent: 4412779 (1983-11-01), Tsunoda et al.

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