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System and method for reducing combustion dynamics in a combustor

United States Patent

9,121,612
September 1, 2015
View the Complete Patent at the US Patent & Trademark Office
A system for reducing combustion dynamics in a combustor includes an end cap having an upstream surface axially separated from a downstream surface, and tube bundles extend from the upstream surface through the downstream surface. A divider inside a tube bundle defines a diluent passage that extends axially through the downstream surface, and a diluent supply in fluid communication with the divider provides diluent flow to the diluent passage. A method for reducing combustion dynamics in a combustor includes flowing a fuel through tube bundles, flowing a diluent through a diluent passage inside a tube bundle, wherein the diluent passage extends axially through at least a portion of the end cap into a combustion chamber, and forming a diluent barrier in the combustion chamber between the tube bundle and at least one other adjacent tube bundle.
Uhm; Jong Ho (Simpsonville, SC), Johnson; Thomas Edward (Greer, SC), Zuo; Baifang (Simpsonville, SC), York; William David (Greer, SC)
GENERAL ELECTRIC COMPANY (Schenectady, NY)
13/ 409,309
20130227953
March 1, 2012
FEDERAL RESEARCH STATEMENT This invention was made with Government support under Contract No. DE-FC26-05NT42643, awarded by the Department of Energy. The Government has certain rights in the invention.