Patents Assigned to Neyrpic
  • Mechanism including two cut-off devices in series
    Patent number: 4276905
    Abstract: A mechanism for a hydraulic pipe comprises two rotatable cut-off devices in series arranged inside two half-shells which are arranged symmetrically, relative to a mean transverse plane, and which are connected by being bolted together by their flanges. Each half-shell supports the journals of a cut-off device and an intermediate piece may be provided for supporting center gaskets.The mechanism is particularly applicable to the protection of turbines in a high-fall hydroelectric installation.
    Type: Grant
    Filed: March 10, 1980
    Date of Patent: July 7, 1981
    Assignee: Neyrpic
    Inventor: Bernard Lourdeaux
  • Method and apparatus for controlling a water turbine
    Patent number: 4120602
    Abstract: A method of controlling the operation of a water turbine, in particular a bulb type turbine, wherein the mobile guide vane assembly serves only to reflect the water during operation, the starting and stopping of the turbine being controlled and water-tight sealing when the turbine is stopped being provided by a gate sluice.
    Type: Grant
    Filed: January 3, 1977
    Date of Patent: October 17, 1978
    Assignees: Neyrpic - Creusot Loire, Compagnie Nationale du Rhone
    Inventor: Lucien Megnint