DE2947130

A dual fuel injector for a gas turbine engine having means for water injection to reduce NOx emissions, comprises an outer annular gas fuel duct with a venturi section with air purge holes to prevent liquid fuel entering the gas duct, an inner annular liquid fuel duct having inlets for water and liq...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	CARLISLE, DENIS RICHARD, RISLEY, DERBY, GB, HOLMES, NEVILLE RAYMOND, EXHALL, GB, HUGHES, ERIC, NUNEATON, WARWICKSHIRE, GB
Format:	Patent
Sprache:	eng
Schlagworte:	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 WEAPONS
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Beschreibung
Zusammenfassung:	A dual fuel injector for a gas turbine engine having means for water injection to reduce NOx emissions, comprises an outer annular gas fuel duct with a venturi section with air purge holes to prevent liquid fuel entering the gas duct, an inner annular liquid fuel duct having inlets for water and liquid fuel and through which compressor air flows, the inner annular duct terminating in a nozzle, and a central flow passage through which compressor air also flows, terminating in a main diffuser having an inner secondary diffuser. The surfaces of both diffusers are arranged so that their surfaces are washed by the compressor air to reduce or prevent the acretion of carbon to the injector, the diffusers in effect forming a hollow pintle.