초록 ▼

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

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.

대표청구항 ▼

A reversible two-stage hydraulic machine having a rotary shaft operable to rotate about an axis of rotation in both a clockwise and counterclockwise direction, the improvements comprising: a first-stage hydraulic machine runner affixed to said shaft for rotation therewith; said runner having a plura

A reversible two-stage hydraulic machine having a rotary shaft operable to rotate about an axis of rotation in both a clockwise and counterclockwise direction, the improvements comprising: a first-stage hydraulic machine runner affixed to said shaft for rotation therewith; said runner having a plurality of runner blades cooperating to define a plurality of fluid passages through said runner; each of said passages having a radial opening which opens along a plane perpendicular to said shaft and an axial opening parallel to said shaft; a second-stage hydraulic machine runner affixed to said shaft for rotation therewith; said runner having a plurality of runner blades cooperating to define a plurality of fluid passages through said runner; each of said passages having a radial opening which opens along a plane perpendicular to said shaft and an axial opening parallel to said shaft; said axial openings of said second-stage runner facing said axial openings of said first-stage runner in fluid flow communication; means for connecting said radial openings of said first-stage runner in fluid flow communication with an upper water reservoir; and, means for connecting said radial openings of said second-stage runner in fluid flow communication with a lower water reservoir at an elevation below said upper reservoir.