Injection system for a combustion chamber of a turbine engine, comprising an annular wall having a convergent inner cross-section

The invention provides an injection system for a combustion chamber of a turbine engine, comprising an annular wall having a convergent inner cross-section. The invention mainly relates to a system (24) for injecting air and fuel for the annular combustion chamber bottom (10) of a turbine engine, co...

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Bibliographische Detailangaben
Hauptverfasser:	MATTHIEU FRANCOIS RULLAUD, CHRISTIAN GUIN, DIDIER HERNANDEZ
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 GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS HEATING HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04 LIGHTING MECHANICAL ENGINEERING REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGYGENERATION, TRANSMISSION OR DISTRIBUTION TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINSTCLIMATE CHANGE WEAPONS
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Beschreibung
Zusammenfassung:	The invention provides an injection system for a combustion chamber of a turbine engine, comprising an annular wall having a convergent inner cross-section. The invention mainly relates to a system (24) for injecting air and fuel for the annular combustion chamber bottom (10) of a turbine engine, comprising at least two devices for injecting fuel, among which are a central injector (26) and a peripheral annular injector (43) arranged around said central injector (26), and an inner annular air intake channel (71) into which the central injector (26) leads, such as to allow mixing between the fuel from the central injector (26) and the air taken into the inner annular channel (71), and at least one outer annular air intake channel (30; 30a, 30b) enabling said mixture to be enriched with air and the pilot combustion area (P) to be stabilized. The inner annular channel (71) and said at least one outer annular channel (30; 30a, 30b) are separated by an intermediate annular wall (70) extending around the central injector (26) and having an inner convergent cross-section (70a). The inner annular channel is devoid of a gimlet enabling a gyration movement to be generated.