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Operation and Turndown of a Segmented Annular Combustion System

United States Patent Application

View the Complete Application at the US Patent & Trademark Office
The present disclosure is directed to the operation and turndown of a segmented annular combustion system. The method includes injecting, via a fuel nozzle, a combustible mixture into a primary combustion zone between an adjacent pair of integrated combustor nozzles and burning the combustible mixture. The method further includes flowing air and injecting fuel into a premixing channel defined within a first integrated combustor nozzle to produce a second combustible mixture. The second combustible mixture is injected into a secondary combustion zone where it is combusted. The flow of combustion gases is accelerated, via turbine nozzles of the integrated combustor nozzles, toward turbine blades of a downstream turbine section. The method permits turndown of the combustion system by reducing or shutting off fuel to various components of the combustion system.
Berry, Jonathan Dwight (Simpsonville, SC), Hughes, Michael John (State College, PA)
15/ 464,452
March 21, 2017
STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT [0002] This invention was made with Government support under Contract No. DE-FE0023965 awarded by the United States Department of Energy. The Government has certain rights in this invention.