Multi-fuel gas turbine engine combustor

A multi-fuel gas-turbine engine combustor has a burner head having both pilot gas and pilot liquid-fuel injection arrangements, the pilot gas arrangement comprising an annular gallery 19, 32 communicating with a downstream face of the head and a deflecting arrangement adjacent the gallery for direct...

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Bibliographische Detailangaben
Hauptverfasser:	SIMON DE PIETRO, ERIC ROY NORSTER, MAHMOUD KOWKABI, HOLGER HUNTER HEINRICH HESSE
Format:	Patent
Sprache:	eng
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:	A multi-fuel gas-turbine engine combustor has a burner head having both pilot gas and pilot liquid-fuel injection arrangements, the pilot gas arrangement comprising an annular gallery 19, 32 communicating with a downstream face of the head and a deflecting arrangement adjacent the gallery for directing the pilot gas-fuel towards a longitudinal axis 21 of the combustor and over a central part of the downstream face 22. The combustor is designed so that, during both gas- and liquid-fuel operations, the flame front face FF is located close to the burner head and during liquid-fuel operation air is forced across the downstream face to cool the head. Advantageously, the cooling air is made to replace the pilot gas-fuel in the annular gallery, so that it is deflected, like the gas-fuel, and contacts the central part of the downstream face. The burner head also features main gas 23 and liquid-fuel (27, Fig.3) injection arrangements, these communicating with one or more passageways in a radial swirler 14 attached to the head.