Rotary kinetic fluid motors or pumps – Method of operation
Patent
1979-02-05
1981-03-10
Gilreath, Stanley N.
Rotary kinetic fluid motors or pumps
Method of operation
F01D 1700, F01D 2100
Patent
active
042550785
ABSTRACT:
In a method of controlling guide vanes of a multistage hydraulic machine including a plurality of stages interconnected by return passages of the type wherein under an abnormal condition which occurs when the operation of a water wheel or a pump is stopped or when the load of the water wheel is interrupted or the input of the pump is interrupted due to a fault of the machine, the guide vanes are closed such that the degree of opening of the guide vanes of a higher pressure stage is maintained to be always equal to or smaller than the degree of opening of the guide vanes of a lower pressure stage, the guide vanes of the lower pressure stage are not completely closed and maintains a predetermined small degree of opening when the guide vanes of the higher pressure stage are completely closed.
REFERENCES:
patent: 3275293 (1966-09-01), Hosogai et al.
patent: 3309057 (1967-03-01), Tonooka
patent: 3339567 (1967-09-01), Fukasu et al.
patent: 3403888 (1968-10-01), Hartland
patent: 3886373 (1975-05-01), Okada
patent: 4137004 (1979-01-01), Kuwabara et al.
patent: 4168935 (1979-09-01), Ueda et al.
Nonaka Masaharu
Tsunoda Sachio
Gilreath Stanley N.
Tokyo Shibaura Denki Kabushiki Kaisha
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