METHOD OF OPERATING A MULTI-STAGE FLAMESHEET COMBUSTOR

摘要

The present invention discloses a novel way of controlling a gas turbine engine to reduce emissions levels when demand for power from the gas turbine engine is reduced. The operating system provides a series of operating modes for a gas turbine combustor through which fuel is staged to gradually increase engine power, yet harmful emissions, such as carbon monoxide are kept within acceptable levels.

主权项

1. A method of operating a gas turbine combustor comprising:
supplying fuel to a pilot fuel nozzle of the gas turbine combustor; igniting the fuel injected by the pilot fuel nozzle; supplying fuel to a set of pilot tune stage injectors and the pilot fuel nozzle, the pilot tune stage injectors positioned radially outward of the pilot fuel nozzle; supplying fuel to a first portion of a set of main fuel injectors, the pilot fuel nozzle and the pilot tune stage injectors; igniting the fuel injected by the first portion of the set of main fuel injectors to form a main combustion flame; supplying fuel to a second portion of the set of main fuel injectors, the first portion of the set of main injectors, the pilot fuel nozzle and the pilot tune stage injectors; and igniting the fuel injected by the second portion of the set of main fuel injectors to enhance the main combustion flame.