Patents by Inventor Dimitry Drob

Dimitry Drob 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).

  • Response time of a steam turbine speed-control system
    Patent number: 6767178
    Abstract: Steam turbine speed-control systems often incorporate pilot valves for controlling the position of hydraulic actuators for steam valves. Operational efficiency of these pilot valves can suffer from imperfections due to manufacturing defects, wear, contaminated oil, and the like, thereby impairing the control system's overall performance. This disclosure relates to a method for improving performance accuracy by incorporating a control system (including additional controllers) dedicated to overcoming the deficiencies of pilot valves or other control system components. With such a system, the lack of adequate control response can be detected by calculating the first time-derivative of a variety of main controlled-parameters. Such parameters can be directly related to steam flow control, such as steam valve position, steam flow rate, and pressure within the steam turbine; or they may be related to the driven equipment: generator power output, flow rate through a compressor, and compressor discharge pressure.
    Type: Grant
    Filed: December 31, 2002
    Date of Patent: July 27, 2004
    Assignee: Compressor Controls Corporation
    Inventors: Naum Staroselsky, Mykhailo Volynskyi, Dimitry Drob
  • RESPONSE TIME OF A STEAM TURBINE SPEED-CONTROL SYSTEM
    Publication number: 20040126224
    Abstract: Steam turbine speed-control systems often incorporate pilot valves for controlling the position of hydraulic actuators for steam valves. Operational efficiency of these pilot valves can suffer from imperfections due to manufacturing defects, wear, contaminated oil, and the like, thereby impairing the control system's overall performance. This disclosure relates to a method for improving performance accuracy by incorporating a control system (including additional controllers) dedicated to overcoming the deficiencies of pilot valves or other control system components. With such a system, the lack of adequate control response can be detected by calculating the first time-derivative of a variety of main controlled-parameters. Such parameters can be directly related to steam flow control, such as steam valve position, steam flow rate, and pressure within the steam turbine; or they may be related to the driven equipment: generator power output, flow rate through a compressor, and compressor discharge pressure.
    Type: Application
    Filed: December 31, 2002
    Publication date: July 1, 2004
    Inventors: Naum Staroselsky, Mykhailo Volynskyi, Dimitry Drob