Method of controlling operation of multistage hydraulic machines

Details Method of controlling operation of multistage hydraulic machines Method of controlling operation of multistage hydraulic machines

1983-01-10

1985-03-05

Scott, Samuel

Rotary kinetic fluid motors or pumps

Method of operation

415 29, 415 17, 415500, 415 26, 415 50, 415146, 415162, F01D 1700, F01D 1704, F01D 1706, F01D 1708

Patent

active

045028311

ABSTRACT:
A multistage hydraulic machine in which respective pressure stages are connected in series through return passages and the highest and lowest pressure stages are provided with movable guide vanes the degrees of openings of which are variable is controlled in load adjustment or in response to the change of a static head under a steady operation condition by controlling the degrees of openings of the movable guide vanes of the highest and lowest pressure stages in accordance with several modes.

REFERENCES:
patent: 3960463 (1976-06-01), Okada et al.
patent: 4014624 (1977-03-01), Takase et al.
patent: 4236867 (1980-12-01), Morris
patent: 4255078 (1981-03-01), Tsunoda et al.
patent: 4280788 (1981-07-01), Tsunoda et al.
patent: 4346304 (1982-08-01), Tsunoda et al.
patent: 4412779 (1983-11-01), Tsunoda et al.
patent: 4431370 (1984-02-01), Ichikawa et al.

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