COMBUSTOR AND GAS TURBINE

摘要

A combustor of the present invention includes: a pilot burner; a plurality of main burners (36), each of which is provided radially and outwardly along a circumferential direction about the pilot burner, and including a main nozzle (36a) disposed in a main burner cylinder (36A); an extension tube (36B) provided to extend toward a downstream side from the main burner cylinder of each of the main burners, the extension tube having a circular inlet (36Ba) communicating with the main burner cylinder, and an outlet (36Bb) at the downstream side comprising two radial edges (36Bc) parallel to the radial direction and two circumferential edges (36Bd) formed along the circumferential direction so as to connect both ends of the radial edges; an air passage (36E) formed outside of the main burner cylinder; and an inner communication hole (H1).

主权项

1. A combustor comprising:
a pilot burner; a plurality of main burners, each of which is provided radially and outwardly along a circumferential direction about the pilot burner, and is including a main nozzle disposed in a main burner cylinder; an extension tube extending toward a downstream side from the main burner cylinder of each of the main burners, including a circular inlet communicating with the main burner cylinder, and including an outlet at the downstream side formed of two radial edges parallel to the radial direction and two circumferential edges formed along the circumferential direction so as to connect both ends of the radial edges; an air passage formed outside of the main burner cylinder; and an inner communication hole formed at a position corresponding to the radially and inwardly circumferential edge on a side of the inlet of the extension tube to communicate between the air passage and an inside of the extension tube, wherein the inner communication hole is formed at the extension tube.