Reversible two-stage hydraulic machine

Details Reversible two-stage hydraulic machine Reversible two-stage hydraulic machine

1982-05-06

1985-01-29

Garrett, Robert E.

Rotary kinetic fluid motors or pumps

Selectively adjustable vane or working fluid control means

Upstream of runner

4151981, 415500, 415152R, F01D 1302

Patent

active

044962827

ABSTRACT:
A reversible two-stage hydraulic machine, or pump/turbine, is disclosed having a rotary shaft. A first-stage Francis-type runner is fixed to the shaft with a spiral casing surrounding the first stage runner for distributing water to the runner from an upper reservoir. Stay vanes and wicket gates in the first-stage casing direct water to flow toward the first-stage runner in a spiral path having a direction in common with the rotational direction of the shaft. Water discharging axially from the first-stage runner is admitted to axial openings of a second-stage Fourneiron-type runner. Water is discharged from the second-stage runner in a radial plane. Second-stage stay vanes surrounding the discharge of the second-stage runner direct the water to flow in a spiral path having a rotational direction opposite of that of the shaft.

REFERENCES:
patent: 2010555 (1935-08-01), Moody
patent: 3435771 (1969-04-01), Riple
patent: 3867059 (1975-02-01), Fauconnet
patent: 4082477 (1978-04-01), Kronogard
patent: 4280788 (1981-07-01), Tsunoda

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