Abstract:
The invention is related to a method for determining a fuel split setting value (101) utilisable for adjusting a fuel split setting for a combustion device (12), the fuel split setting defining a relation between main fuel (50) and pilot fuel (51). The invention is also directed to the correspond- ing control unit and the rotating machine for which this method is operated. The method comprises the steps of: retrieving a first information item correlated to a heating value of supplied main fuel (50); retrieving a second information item correlated to a combustor operating condition; retrieving at least one third information item representing stability of combustion in the combustion device (12); selecting a predefined pair of minimum and maximum boundary curves (100A, 100B;...) for the fuel split setting from a plurality of predefined pairs of boundary curves (100A, 100B;...) based on the first information item and the second information item, the minimum and maximum boundary curves (100A, 100B;...) defining a band of fuel split settings permitted for a range of second information item values; - determining the fuel split setting value (101) within the selected pair of minimum and maximum boundary curves (100A, 100B;...) based on the third information item, wherein the determined fuel split setting value (101) being utilisable for adjusting the fuel split setting for the combustion device (12).
Abstract:
A burner (1) with a longitudinal burner axis (2) and at least a mixing channel (3, 4), formed in an annular manner around the longitudinal burner axis (2), for the mixing of fuel and air. Each mixing channel is bounded radially on the inside by a channel hub (5, 6) and radially on the outside by a channel outer wall (7, 8). A fuel concentration distribution in the mixing channel (3, 4) from the channel hub (5, 6) to the channel outer wall (7, 8) being adjustable by adjusting the introduction of fuel to provide an adjustable fuel concentration distribution at respective radial locations across each mixing channel. Also a combustion system with said burner (1) and a method for operating said burner (1).
Abstract:
Die Erfindung betrifft ein Verfahren zum Regeln einer Aufteilung von Brennstoff auf vorbestimmte Brennerstufen zumindest eines Brenners einer Maschine während eines stationären Maschinenbetriebs.
Abstract:
A fuel nozzle apparatus has a centerline axis (26), and includes: a main fuel injector (24) including an enclosed interior volume in fluid communication with a plurality of fuel ports (58) configured to discharge fuel therefrom; a main fuel conduit (22) disposed upstream of the main fuel injector (24) and configured to supply liquid fuel to the interior volume; and a fluid lock (82) disposed between the main fuel conduit (22) and the main fuel injector (24), the fluid lock (82) including a plurality of parallel capillary channels (88).
Abstract:
Système d'injection de carburant dans une chambre de combustion d'un moteur, comportant au moins deux circuits de carburant, l'un à débit permanent (1) et l'autre à débit intermittent (2), des organes (4, 5) de dosage et de répartition du carburant entre les deux circuits et un moyen de commande (3) de ces organes, le circuit à débit intermittent étant susceptible d'être purgé, Caractérisé en ce que, sur réception d'un ordre de remplissage en carburant des circuits à la suite d'une purge du circuit à débit intermittent, le moyen de commande (3) est adapté à - commander les organes (4, 5, 6, 7) de dosage et de répartition pour obtenir un débit de carburant prédéterminé supérieur au débit correspondant à l'ordre de remplissage et fournir le surplus de carburant en résultant au circuit à débit intermittent, pendant une durée prédéterminée.