Method for Switching over a Gas Turbine Burner Operation from Liquid to Gas Fuel and Vice-Versa

The invention refers to a method for switching over a gas turbine burner operation from liquid fuel (21) to gas fuel (22, 23) and vice-versa. The burner (1) comprises two conical shells (2) defining a substantially conical swirl chamber (3) provided with tangential slots (5) for feeding air (20) and...

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Bibliographische Detailangaben
Hauptverfasser:	LACHNER, RUDOLF, MEEUWISSEN, THIEMO, KOKANOVIC, STANKA, SCHELL, SUSANNE
Format:	Patent
Sprache:	eng ; fre ; ger
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:	The invention refers to a method for switching over a gas turbine burner operation from liquid fuel (21) to gas fuel (22, 23) and vice-versa. The burner (1) comprises two conical shells (2) defining a substantially conical swirl chamber (3) provided with tangential slots (5) for feeding air (20) and nozzles (6) for feeding a premix gas fuel (22) therein, nozzles (8) for injecting a pilot gas fuel (23) and a lance (7) disposed centrally in the conical chamber (3) and arranged to inject a liquid fuel (21) therein. While the liquid fuel (21) and the premix gas fuel (22) are regulated to switch over from liquid fuel to gas fuel operation or vice-versa, the pilot gas fuel (23) is controlled at a substantially constant flow rate.