Patents Represented by Attorney Edward J. Kochey, Jr.

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  • Flame failure detection
    Patent number: 5170621
    Abstract: A dual rotor gas generator of a gas turbine generator is fired with fuel delivery based on a fuel demand signal. Actual air flow is determined by sensing the low pressure rotor speed. A ratio of the fuel demand and actual air flow is calculated. Actual fuel flow is not used. Loss of flame is detected based on a fuel/air ratio as compared to a preselected value.
    Type: Grant
    Filed: April 18, 1991
    Date of Patent: December 15, 1992
    Assignee: United Technologies Corporation
    Inventors: B. Melvin Barnum, Russell C. Bell
  • Gas turbine overtemperature protection
    Patent number: 4910956
    Abstract: Turbine gas temperature, which escalates during a compressor stall, is monitored 46, and compared to a set point temperature 52. If the set point temperature is exceeded, valve 36 is pulsed discharging fuel from line 24 and reducing flow to the combustor. Open and closed intervals are selected to reduce flow, but to avoid flameout. An additional second valve 42 operates in a similar mode in response to an even higher gas temperature.Engine operation continues in this temperature protection mode until the stall is corrected by whatever means.
    Type: Grant
    Filed: June 16, 1989
    Date of Patent: March 27, 1990
    Assignee: United Technologies Corporation
    Inventors: Robert T. Legore, Charles B. Redpath, Gary A. Stone, George A. White
  • Boiler with economizer heat absorption reduction
    Patent number: 4403571
    Abstract: The steam generator includes means for limiting the heat absorption of the economizer 28 during start-up and low load operation. An air bypass duct 54 is located to convey air from cold air duct 46 at a location between forced draft fan 44 and air heater 40 to the gas duct 38. The air is introduced upstream of economizer 28 where it mixes with hot flue gases to reduce the temperature of gas flowing through the economizer. Control dampers 56 are operated to maintain the desired temperature at the economizer outlet 30.
    Type: Grant
    Filed: December 9, 1981
    Date of Patent: September 13, 1983
    Assignee: Combustion Engineering, Inc.
    Inventor: Edward L. Kochey, Jr.