PILOT COMBUSTION BURNER, GAS TURBINE COMBUSTOR, AND GAS TURBINE

摘要

PROBLEM TO BE SOLVED: To provide a combustor which reduces combustion oscillation more effectively.SOLUTION: A pilot combustion burner disposed along an axis of a combustor of a gas turbine includes a pre-mixing pilot nozzle 10. At an arbitrary radial position of a flame stabilizer 12 set on the front end of the pilot combustion burner, the pre-mizing pilot nozzle 10 has penetrating holes 14 arranged in the peripheral direction thereof at constant intervals. Compressed air sent from a compressor flow in the holes 14. Fuel jet ports 16 is formed upstream of the holes 14 in the direction of a flow of compressed air so that a mixture of a fuel and compressed air is jetted out of the holes 14. On the flame stabilizer 12, a spread pilot nozzle 11 performs spread combustion by jetting the fuel from the fuel jet ports 16 located in a position different from the holes 14.