Other

Alstom Renewable Technologies

Ge Renewable Technologies

Armin Steinhilber

Philippe Girin

Robert Pavillet

This invention discloses in particular an actuation cylinder () for controlling the movement of a ring-gate () of a hydraulic machine, said actuation cylinder () comprising a body () forming a first chamber () provided with a first duct () and a second chamber () provided with a second duct () which are designed to receive an actuating fluid through said first duct () and said second duct (), said chambers being separated from one another by a piston () connected to an actuating rod () and able to move in said body in a first direction in which the volume of the second chamber increases while the volume of the first chamber decreases, and in a second direction in which the volume of the second chamber decreases while the volume of the first chamber increases, said piston being provided with a rod () connected in said second chamber to an area () of the piston turned toward said second chamber, said area () having a surface less than an area () of the piston turned toward the first chamber.

Device and method for ring gate closing optimization

A control device includes a valve, having a body connected to the first chamber of a cylinder via a first hydraulic connection and to the second chamber of the cylinder via a second hydraulic connection. The control device includes a first hydraulic duct connected to a first actuating-fluid source, and a second hydraulic duct connected to a second actuating-fluid source. The hydraulic ducts communicate with the body of the valve. The valve further includes a distribution device that is movable within the body of the valve, between a first position, in which the distribution device places the first hydraulic connection and the first hydraulic duct in fluid communication, and a second position, in which the distribution device places the second hydraulic connection and the second hydraulic duct in fluid communication.

Device for controlling the movement of a hydraulic cylinder, particularly for hydraulic machines

A device controls the movement of a ring gate of a hydraulic machine between an open position and a blockage position. The device includes at least four cylinders, the rods of which are suitable for being connected to the ring gate at locations located on a perimeter of the ring gate. The device also includes at least two hydraulic members for synchronizing pistons, the hydraulic synchronization members being connected to the cylinders such as to form at least two groups. Each group encompasses at least two cylinders connected by at least one hydraulic synchronization member, two cylinders belonging to two separate groups not being connected by a hydraulic synchronization member.

Growing community of inventors

Claix, France

Armin Steinhilber