Burner, combustor and remodeling method for burner

摘要

A combustor with a burner maintains combustion stability. The burner includes an air hole member 31 with a plurality of air holes 34, 35 provided at an upstream side of the combustion gases generated by a combustion chamber 1. A first fueling nozzle 33 jets fuel in a direction crossing a central axis of the burner towards at least two of air holes 35. A plurality of second fueling nozzles 32, one for each of the remaining air holes 34, are provided to jet the fuel in a direction routed along the burner axis towards the corresponding air hole 34. A fuel header 30 distributes the fuel to the first fueling nozzle 33 and each of the second fueling nozzles 32. A fuel header storage unit 70 shrouds the fuel header 30, fueling nozzles 32, 33, and has an air inflow hole 71.

主权项

1. A burner comprising:
an air hole member with a plurality of air holes, said plurality of air holes including a plurality of first air holes and a plurality of second air holes that are different from the plurality of first air holes, all of said plurality of air holes being located in the air hole member at an upstream side of post-combustion gases which are generated in a combustion chamber; at least one first cylindrical fueling nozzle for jetting a fuel from a plurality of injection ports provided on an outer circumferential surface of the at least one first cylindrical fueling nozzle and which fuel jetted from said plurality of injection ports is directed only towards inner wall surfaces of at least two adjacent ones of the plurality of first air holes; a plurality of second fueling nozzles, each second fuel nozzle being provided in association with each one of the plurality of second air holes that are different from the plurality of first air holes, each of the second fueling nozzles being formed for jetting the fuel in a direction routed along a burner axis and only towards an associated one of the plurality of second air holes that are different from the plurality of first air holes; a fuel header for distributing the fuel to the at least one first cylindrical fueling nozzle and to each of the second fueling nozzles; and a fuel header storage unit that shrouds the fuel header, the at least one first cylindrical fueling nozzle and each of the plurality of second fueling nozzles, the fuel header storage unit including an air inflow hole.