PILOT BURNER OF PREMIX COMBUSTOR, PREMIX COMBUSTOR, AND GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a high flame stability pilot burner of a premix combustor. SOLUTION: An air guiding plate 24 is place to almost cohere to a side face of a pilot nozzle 22 from a pilot swirler 21 toward a tip end of the pilot nozzle 22. An end 27 of the air guiding plate 24 is located at the tip end of the pilot nozzle 22, and is crooked outward radially in view of a shaft center of the pilot nozzle 22. When the end 27 of the air guiding plate 24 is crooked in this manner, pilot air 26 goes around the crooked part as shown by an arrowhead 28 and a swirl occurs. This swirl can curb blowoff of fuel and prevent dilution of the fuel by flow of the pilot air 26. Thus, flame stability is improved.