Device and Method for Ring Gate Closing Optimization

Abstract

This invention discloses in particular an actuation cylinder ( 10 ) for controlling the movement of a ring-gate ( 40 ) of a hydraulic machine, said actuation cylinder ( 10 ) comprising a body ( 18 ) forming a first chamber ( 22 ) provided with a first duct ( 26 ) and a second chamber ( 24 ) provided with a second duct ( 28 ) which are designed to receive an actuating fluid through said first duct ( 26 ) and said second duct ( 28 ), said chambers being separated from one another by a piston ( 20 ) connected to an actuating rod ( 14 ) 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 ( 30 ) connected in said second chamber to an area ( 20 b ) of the piston turned toward said second chamber, said area ( 20 b ) having a surface less than an area ( 20 a ) of the piston turned toward the first chamber.

1 . An actuation cylinder ( 10 ) for controlling the movement of a ring-gate ( 40 ) of a hydraulic machine, said actuation cylinder ( 10 ) comprising a body ( 18 ) forming a first chamber ( 22 ) provided with a first duct ( 26 ) and a second chamber ( 24 ) provided with a second duct ( 28 ) which are designed to receive an actuating fluid through said first duct ( 26 ) and said second duct ( 28 ), said chambers being separated from one another by a piston ( 20 ) connected to an actuating rod ( 14 ) 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 ( 30 ) connected in said second chamber to an area ( 20   b ) of the piston turned toward said second chamber, said area ( 20   b ) having a surface less than an area ( 20   a ) of the piston turned toward the first chamber. 
     
     
         2 - 9 . (canceled)