NOZZLE, BURNER, COMBUSTOR, GAS TURBINE, AND GAS TURBINE SYSTEM

摘要

PROBLEM TO BE SOLVED: To unfailingly inhibit back fire to a nozzle tip part.SOLUTION: A combustor 10 includes: a nozzle 25 in which an air injection part 51 which injects air from a tip part 25s is formed; a cylindrical member 26 which covers the nozzle 25 from the outer periphery side and forms an air passage between itself and the nozzle 25; and a pressure loss part 27 which is provided in the air passage and causes pressure loss in the air flowing in the air passage. The nozzle 25 includes: an air intake part 52 which takes in air from an outer peripheral surface at the upstream side relative to the pressure loss part 27; and a passage formation part 50 forming an injection air passage R2 which leads the air taken in from the air intake part 52 to the air injection part 51.