Method for enhancing power of a gas turbine engine
AssigneeSolar Turbines Incorporated
InventorsDaniel William Burnes, Daniel Joseph Reitz, Jamaal A. Sanders
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Abstract
A method for servicing a gas turbine engine to enhance the power output of the gas turbine engine including a control system, inlet guide vanes, and a third stage power turbine nozzle is disclosed. The control system includes an inlet guide vane module. The method includes increasing an operating range of each inlet guide vane to at least 62 degrees. The method also includes modifying a total flow area of the third stage power turbine nozzle by 2% to 12%, the total flow area including flow areas between adjacent airfoils in the third stage power turbine nozzle.
Claims24
A method for servicing a gas turbine engine to enhance the power output of the gas turbine engine, the gas turbine engine including a control system, inlet guide vanes, and a third stage power turbine nozzle, the control system including an inlet guide vane module, each inlet guide vane being rotatable about its axis, and the third stage power turbine nozzle including nozzle segments with an outer shroud, an inner shroud, and airfoils extending there between, the method comprising:
- increasing an operating range of each inlet guide vane to at least 62 degrees;
- and
- modifying a total flow area of the third stage power turbine nozzle by an amount, the amount being from 11.6 square centimeters to 77.4 square centimeters and the total flow area including flow areas between adjacent airfoils in the third stage power turbine nozzle.
A method for servicing a gas turbine engine to enhance the power output of the gas turbine engine, the gas turbine engine including a control system, inlet guide vanes, and a third stage power turbine nozzle, the control system including an inlet guide vane module, each inlet guide vane being rotatable about its axis, and the third stage power turbine nozzle including nozzle segments with an outer shroud, an inner shroud, and airfoils extending there between, the method comprising:
- modifying the inlet guide vane module to increase an operating range of rotation for each inlet guide vane about its axis to at least 62 degrees;
- and
- modifying a total flow capacity of the third stage power turbine nozzle by 1% to 4%, the total flow capacity including flow capacities between adjacent airfoils in the third stage power turbine nozzle.
A method for servicing a gas turbine engine to enhance the power output of the gas turbine engine, the gas turbine engine including a control system, inlet guide vanes, and a third stage power turbine nozzle, the control system including an inlet guide vane module, each inlet guide vane being rotatable about its axis, and the third stage power turbine nozzle including nozzle segments with an outer shroud, an inner shroud, and airfoils extending there between, the method comprising:
- modifying the inlet guide vane module to increase an operating range of rotation for each inlet guide vane about its axis to at least 62 degrees;
- and
- modifying a total flow area of the third stage power turbine nozzle by 2% to 12%, the total flow area including flow areas between adjacent airfoils in the third stage power turbine nozzle.
Dependencies are inferred from the claim text.