Title: Control apparatus for modulating the inlet guide vanes of a gas turbine employed in a combined cycle electric power generating plant as a function of load or inlet blade path temperature

Abstract: A combined cycle electric power generating plant, which includes gas and steam turbines, inlet guide vane positioning means for the gas turbines, steam generators, afterburners and a digital/analog control system, is provided with inlet guide vane control apparatus adapted to modulate the position of the inlet guide vanes as a function of load or inlet blade path temperature. The inlet guide vane control apparatus is further adapted to operate in either an automatic or manual mode with additional provision for bumpless transfer therebetween incorporated in the control apparatus.

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Inventors: Reed, Terry J. (North Huntingdon, PA, US)
Smith, Jack R. (Pittsburgh, PA, US)

Application Number: 495727
Filing Date: 1974-08-08
Publication_date: 1976-08-10
Assignee: Westinghouse Electric Corporation (Pittsburgh, PA)
Primary Class(es): 60/794 60/39.182, 60/39.27, 60/39.281, 290/40C
Other Classes:
US Patent Ref:

3255586	Jun, 1966	Hennig	60/39.
3533236	Oct, 1970	Cottington	60/39.
3653206	Apr, 1972	Greune	60/39.
3691405	Sep, 1972	Kendell	60/39.
3764785	Oct, 1973	Harner	60/39.
3795104	Mar, 1974	McLean	60/39.
3797233	Mar, 1974	Webb	60/39.

Other Refs:
Primary Examiner: Gordon, Clarence R.
Assistant Examiner:
Attorney: Seinberg; S. A.