Patent ID: 9612013
Date: 2017-04-04
CPC Classifications: F23D,F23R

Claim:
1. A gas turbine combustor provided with a pilot burner that is provided at the center portion of a combustor main body formed in a cylindrical shape to form a pilot flame, and a plurality of main burners arranged so as to surround the outer periphery of the pilot burner to form a premixed flame, wherein the pilot burner includes a pilot nozzle that supplies pilot fuel, a pilot air channel that is formed around the pilot nozzle such that pilot air in the pilot air channel flows parallel to the pilot fuel flowing in the pilot nozzle to supply the pilot air thereto, and an ignition improving part that is provided in the pilot air channel and reduces the size of a low-temperature air layer of the pilot air, formed between the pilot flame and the premixed flame, the pilot nozzle includes an injecting hole that injects the pilot fuel into the pilot burner, the pilot air channel supplies the pilot air to the pilot burner at a location downstream of the injecting hole, and the ignition improving part is provided in the pilot air channel at an exit of the pilot air channel, and is one or a plurality of flow-splitting members with a substantially triangular pole-shape provided on an inner peripheral surface of a cylindrical member of the pilot burner so as to project towards an inside in a radial direction with respect to the inner peripheral surface.