Patent ID: 6021635
Filing Date: 2000-02-08
Classification: F23R

Abstract:
A method of dispensing fluid components into a combustion chamber of a gas turbine engine of a variety having a fuel nozzle for delivering an atomized fluid spray to said chamber, said method comprising the steps of:(a) providing said nozzle as comprising:an outer fluid passageway extending along a longitudinal central axis from an upstream first end to a downstream second end;an inner fluid passageway disposed coaxially with said outer fluid passageway as extending along said central axis from an upstream end to a downstream end portion terminating at a first discharge orifice, said downstream end portion defining an internal mixing chamber disposed intermediate the upstream end and the discharge orifice of said inner fluid passageway;a central fluid passageway disposed coaxially with said inner fluid passageway as extending along said central axis from an upstream end to a downstream end portion defining a second discharge orifice generally concentric with said first discharge orifice,at least one first inlet port extending along a longitudinal first port axis in fluid communication with said inner fluid passageway and said mixing chamber; andat least one second inlet port extending along a longitudinal second port axis in fluid communication with said outer fluid passageway and said mixing chamber, said second inlet port being disposed angularly to said first inlet port such that said second port axis intersects said first port axis within said mixing chamber defining an internal impingement locus,(b) conveying a distillate fuel first fluid component through said inner fluid passageway;(c) conveying an aqueous second fluid component through said outer fluid passageway;(d) conveying a distillate fuel third fluid component through said central fluid passageway;(e) injecting said first fluid component into said mixing chamber through said first inlet port;(f) injecting said second fluid component into said mixing chamber through said second fluid port to impinge upon said first fluid component within said impingement locus forming an admixture of said first and second fluid components;(g) dispensing said admixture from said discharge orifice into said combustion chamber as an outer conical spray; and(h) dispensing said third fluid component from said second discharge orifice into said combustion chamber as a central spray disposed within said outer conical spray.