Venturi for use in the swirl cup package of a gas turbine combustor having water injected therein

A combustion apparatus for a gas turbine engine including a combustor structure (12) having at least one combustion chamber (14), a dual cone fuel nozzle (24) for injecting both fuel and water to the combustion chamber (14), and a swirl cup package (22) upstream of and adjacent to the combustion cha...

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Bibliographische Detailangaben
Hauptverfasser:	RETTIG, MARK GERARD, FARMER, GILBERT, GROESCHEN, JAMES ANTHONY
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	AIR INTAKES FOR JET-PROPULSION PLANTS AIR SUPPLY BLASTING BURNERS COMBUSTION APPARATUS COMBUSTION ENGINES COMBUSTION PROCESSES CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS DRAUGHT-INDUCING 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 SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS WEAPONS
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Beschreibung
Zusammenfassung:	A combustion apparatus for a gas turbine engine including a combustor structure (12) having at least one combustion chamber (14), a dual cone fuel nozzle (24) for injecting both fuel and water to the combustion chamber (14), and a swirl cup package (22) upstream of and adjacent to the combustion chamber (14). The swirl cup package (22) further includes a swirler (28) and a venturi (34) extending between the fuel nozzle (24) and the combustion chamber (14) for mixing the fuel and water with air. The venturi (34) is configured to have a thickness (t) from an upstream end (44) to a downstream end (46) which provides a heat transfer conduction path that reduces axial stresses imposed on the venturi (34) when water impinges on an upstream portion of the venturi (34).