摘要:
A multi-stage vortex mixer (90) for a combustor of a gas turbine engine includes a vortex amplifier stage (96) in communication with a first stage amplifier (110), the vortex amplifier stage in communication with a dilution hole (88).
摘要:
The invention relates to a burner (24) for a gas turbine (1), having at least one air passage (26) which can be charged with compressor air, at least one fuel passage (28) which can be charged with at least one fuel gas, wherein the two passages (26, 28) each have a main outlet opening (36, 38) opening into the combustion chamber (34) of the gas turbine (1), wherein the air passage (26) and the fuel passage (28) are connected fluidically to each other via at least one connecting duct (54) arranged upstream of the main outlet openings (36, 38). The burner permits the reduction of thermo-acoustic oscillations in a combustion chamber on a gas turbine in an alternative way. To this end, the burner (24) is formed in such a way that, in at least one first operating state of the burner while the air passage (26) is charged with compressor air and while the fuel passage (28) is charged with fuel gas, part (82) of the fuel gas flowing in the fuel passage flows into the air passage (26) via at least one connecting duct (54) and, for the purpose of the combustion thereof, can be introduced into the interior of the combustion chamber (36) through the main outlet opening (36) of the air passage, and a remaining part (80) of the fuel gas can be introduced into the interior of the combustion chamber through the main outlet opening (38) of the fuel passage, and the quantity and the radial fuel distribution of the branched-off part (82) of the fuel stream is such that the feedback of the heat-of-liberation fluctuations is reduced by using the pressure fluctuations in the combustion chamber.
摘要:
Die Erfindung betrifft ein Verfahren zum Betrieb einer Verbrennungsvorrichtung, welche wenigstens einen mit einer Brennstoffstufung (s) ausgestatteten, mit einer Brennkammer in Verbindung stehenden Vormischbrenner aufweist, bei welchem Verfahren während transienter Betriebszustände die Brennstoffstufung (s) des wenigstens einen Vormischbrenners nach Massgabe der in der Brennkammer auftretenden vebrennungsinduzierten Pulsationen verändert wird. Eine vereinfachte und effektive Regelung wird dadurch erreicht, dass fortlaufend ein Pulsationsniveau (p) der in der Brennkammer auftretenden Pulsationen bestimmt wird, dass die Brennstoffstufung (s) des wenigstens einen Vormischbrenners zur Absenkung des Pulsationsniveaus (p) geändert wird, wenn das Pulsationsniveau (p) einen vorgegebenen Maximalwert (p max ) überschreitet, und dass nach einer vorgegebenen Zeitspanne (Δt) die Brennstoffstufung (s) auf den für den jeweiligen Betriebspunkt massgebenden ungestörten Wert zurückgefahren wird, wenn in dieser Zeitspanne (Δt) der vorgegebenen Maximalwert (p max ) nicht überschritten wird.
摘要:
A method for detecting malfunctions in a combustion chamber of a gas turbine plant includes providing dynamic pressure signals (P1 I , P2,...., P N ), each indicative of a dynamic pressure at the outlet of a respective burner of a combustion chamber of the plant. Frequency spectra (S 1 (f), S 2 (f),..., S N (f), S 1 *(f), S 2 * (f),..., S N *(f)) of the dynamic pressure signals (P 1 , P 2 ,..., P N ) are calculated, the malfunctions of the burners are recognized according to these spectra. Each burner subject to malfunctioning is identified according to a bijective correlation between the burners and the respective dynamic pressure signals (P 1 , P 2 ,..., P N ).
摘要:
A system includes a fuel nozzle (12). The fuel nozzle includes a hub (13), a shroud disposed about the hub (12), an airflow path (74) between the hub (13) and the shroud (17), multiple first fuel outlets (80) disposed on the hub (12), and multiple swirl vanes (48) disposed in the airflow path (74) downstream from the multiple first fuel outlets (80).