Patent Number: 6,250,063

Title: Fuel staging apparatus and methods for gas turbine nozzles

Abstract: Each combustor for a gas turbine includes a fuel supply line for supplying fuel to a plurality of nozzles in the combustor. A remotely controlled valve has a valve member movable between valve-open and valve-closed positions. In a valve-closed position, fuel is supplied to a first group of one or more nozzles of the combustor, while fuel is cut off to a second group of one or more nozzles of the combustor. In a valve-open position, fuel is supplied to all nozzles of the combustor. By positively and selectively actuating the valve, the fuel/air ratio of the nozzles supplied by the fuel is increased to enhance flame stability.

Inventors: Davis, Jr.; Lewis Berkley (Niskayuna, NY), Balevic; David Justin (Niskayuna, NY), Beaudoin; Ronald Joseph (Schenectady, NY), Mick; Warren James (Altamont, NY)

Assignee: General Electric Co.

International Classification: F02C 9/26 (20060101); F02C 9/00 (20060101); F02C 7/228 (20060101); F02C 7/22 (20060101); F02C 9/34 (20060101); F23K 5/06 (20060101); F23K 5/02 (20060101); F23R 3/34 (20060101); F02C 009/08 ()

Expiration Date: 06/26/2018