Patents by Inventor Sivert Eklund

Sivert Eklund has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Control system for extraction and injection of steam from and into a turbine
    Patent number: 5464318
    Abstract: The present invention relates to a control system for controlling injection and extraction of steam in a steam turbine (1), the same valves (5,6) being used both for injection of steam to the turbine (1) and for extraction of steam from the turbine (1) . The valves (5, 6) commonly used for injection and extraction are controlled to be timely opened and closed in dependence on the pressure conditions at injection points (2,3) and extraction points (2,3), respectively, in the turbine and on the pressure (P3) prevailing in a process network connected to the valves (5, 6) such that injected or extracted steam is utilized in an optimal manner.
    Type: Grant
    Filed: December 20, 1993
    Date of Patent: November 7, 1995
    Assignee: ABB Stal AB
    Inventors: Sivert Eklund, Claes Jonsson, Lars-Goran Sjoberg