AIR-STAGED DIFFUSION NOZZLE

PROBLEM TO BE SOLVED: To provide a diffusion nozzle for a gas-fuel that provides cooling of a nozzle tip while at the same time improving mixing of the fuel and air.SOLUTION: In an air-staged diffusion nozzle for a gas turbine combustor, air is mixed with the gas fuel and expanded in a downstream bu...

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Bibliographic Details
Main Authors KALEESWARAN KARTHICK, POLISETTY VENUGOPAL, DESAI ANAND PRAFULCHANDRA
Format Patent
LanguageEnglish
Published 28.06.2012
Subjects
BLASTING
COMBUSTION APPARATUS
COMBUSTION PROCESSES
GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
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Summary:PROBLEM TO BE SOLVED: To provide a diffusion nozzle for a gas-fuel that provides cooling of a nozzle tip while at the same time improving mixing of the fuel and air.SOLUTION: In an air-staged diffusion nozzle for a gas turbine combustor, air is mixed with the gas fuel and expanded in a downstream burner tube. Introduction of air, passing downstream from the tip of the nozzle to the burner tube space forces hot gases away from and cools the nozzle tip. Air flow through an inner swirler or through cooling holes on the nozzle tip may be arranged to establish a cooling flow volume and direction that advantageously interacts with gas fuel-air flow from an outer swirler to improve fuel-air mixing in the burner tube, helping to reduce emissions and soot formation.
Bibliography:Application Number: JP20110263173