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AssigneeAlstom Hydro France
InventorsJacques Bremond, Joel Louis Pierre Marin, Farid Mazzouji, Daniele Bazin
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The invention relates to a unit comprising a hydraulic turbine (1), a duct (5) leading a forced flow of water to the turbine, a duct (8) discharging the outgoing flow from the turbine and vanes (20) for guiding the flow through the discharge duct. Each guide vane (20) is able to rotate about an axis (x22) secant to the wall (84) of the discharge duct. Means (30) are provided for controlling the angular position of the vane (20) about its axis of rotation (x22). Each guide vane (20) can also be retracted into the wall (84) of the discharge duct (8), and means (21) are provided for adjusting the extent to which they are withdrawn into the wall.
An installation for converting hydraulic energy into electrical energy, which installation comprises a hydraulic turbine, a feed duct for feeding a forced flow of water to the turbine, a discharge duct for removing the flow exiting from the turbine, and guide fins for guiding the flow through the discharge duct, said installation being characterized in that each guide fin is mounted to pivot in rotation about an axis that intersects the wall of the discharge duct, in that the installation is provided with means for controlling the angular position of the fin about its pivot axis, in that each pivotally moving fin is retractable into the wall of the discharge duct, and in that the installation is provided with means suitable for adjusting the extent to which the fin is retracted into the wall.
A method of controlling an installation for converting hydraulic energy into electrical energy, which installation comprises a hydraulic turbine a feed duct for feeding a forced flow of water to the turbine, a discharge duct for removing the flow exiting from the turbine and guide fins for guiding the flow through the discharge duct, wherein said method comprises a step consisting in controlling the angular position, about an axis that intersects the wall, of the discharge duct of each guide fin for guiding the flow through the discharge duct and a step consisting in controlling the extent to which each moving fin is retracted into the wall of the discharge duct.
Dependencies are inferred from the claim text.