Zweistoffdüse zur Verhinderung der kohlenstoffhaltigen Ablagerung auf Oberflächen einer Gasturbinenbrennkammer

The dual-fuel nozzle for a gas turbine and combustor includes a liquid fuel nozzle (12) surrounded by a gas fuel nozzle (14). A converging sleeve (16) surrounds the converging outer wall of the combined liquid fuel and gaseous nozzle to form a duct (D) of decreasing cross-sectional area in a downstr...

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Bibliographische Detailangaben
Hauptverfasser:	LOPRINZO, ANTHONY J, MAUGHAN, JAMES ROLLINS, LUTS, ANDREW, BLACK, STEPHEN HUGH, MORTON, H. LINDSAY, BECHTEL, II, DEAN, ANTHONY JOHN
Format:	Patent
Sprache:	ger
Schlagworte:	AIR AIR INTAKES FOR JET-PROPULSION PLANTS BLASTING BURNERS COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS GAS-TURBINE PLANTS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS LIGHTING MECHANICAL ENGINEERING METHODSOR APPARATUS FOR COMBUSTION USING FLUID FUELOR SOLID FUEL SUSPENDED IN WEAPONS
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Beschreibung
Zusammenfassung:	The dual-fuel nozzle for a gas turbine and combustor includes a liquid fuel nozzle (12) surrounded by a gas fuel nozzle (14). A converging sleeve (16) surrounds the converging outer wall of the combined liquid fuel and gaseous nozzle to form a duct (D) of decreasing cross-sectional area in a downstream direction whereby air flow through the duct accelerates toward the conical droplet spray pattern emerging from the liquid fuel nozzle. An inside swirler (18) is located upstream of the liquid fuel tip (30) to swirl the air flowing through the duct. An outer swirler (20) is provided about the downstream end of the sleeve, likewise to swirl air. The accelerated swirling air flow through the duct and outer swirling air flow preclude impingement of oil spray droplets onto metal surfaces of the nozzle and hence prevent carbon deposition thereon which would otherwise be deleterious to the liquid fuel and gaseous nozzles.