| 摘要 |
PROBLEM TO BE SOLVED: To provide an improved dual fuel premix fuel nozzle assembly.SOLUTION: A premix fuel nozzle assembly includes a center body including a sleeve having an inner surface, and a pilot premix fuel nozzle assembly that extends through the center body within the sleeve and defines a pilot air passage within the center body. The pilot premix fuel nozzle assembly includes a premix tip having a plurality of premix tubes each defining a premix passage and a fuel port, where the premix passage is in fluid communication with the pilot air passage. At least one of the premix tubes includes a fuel port. The premix fuel nozzle assembly further includes a pilot fuel flow path that is defined radially between the pilot premix fuel nozzle assembly and the inner surface of the sleeve, and a fuel plenum that is at least partially defined between the sleeve inner surface and an outer surface of the premix tip. The fuel ports provide fluid communication between the fuel plenum and the premix passages.SELECTED DRAWING: Figure 1 |
