| 主权项 |
1. A device, which controls the movement of a ring gate of a hydraulic machine comprising a paddle wheel, the ring gate defining a closed contour and being movable between an open position and a blockage position of at least one water supply channel of the paddle wheel,
the device comprising at least four dual-action hydraulic cylinders, each cylinder comprising: a rod, a piston, a first chamber, and a second chamber, the first chamber and the second chamber being suitable for receiving an actuating fluid, the piston being connected to the rod so as to separate the first chamber from the second chamber, the first chamber being situated on the side of the rod relative to the piston and the second chamber being situated on the side opposite the rod relative to the piston, the rods being suitable for being connected to the ring gate at locations located on a perimeter adapted to coincide with the contour of the ring gate, the device including at least two hydraulic members for synchronizing the distances traveled by the pistons in the main direction of movement of the ring gate, the hydraulic synchronization members being connected to the cylinders so as to form at least two separate groups of cylinders, each group encompassing at least two cylinders connected by at least one hydraulic synchronization member, cylinders belonging to two distinct groups not being connected by a hydraulic synchronization member, and wherein two consecutive ones of the locations on the perimeter correspond to cylinders belonging to two separate groups. |
