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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Bibliographic Details
Main Authors RETTIG, MARK GERARD, FARMER, GILBERT, GROESCHEN, JAMES ANTHONY
Format Patent
LanguageEnglish
French
German
Published 04.10.2000
Edition7
Subjects
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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Summary: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).
Bibliography:Application Number: EP20000302665