COMBUSTOR NOZZLE, COMBUSTOR, AND GAS TURBINE

PROBLEM TO BE SOLVED: To provide a combustor nozzle capable of preventing flashback from occurring, a combustor, and a gas turbine.SOLUTION: The combustor nozzle comprises an axis body 51M having a main outer peripheral face Pm extending along an axial line A1 and a radially converging outer peripheral face Ps with a diameter gradually shrinking from the main outer peripheral face Pm toward the front side in the direction of the axial line A1, a plurality of swirl vanes 60 outwardly extending in the radial direction from the main outer peripheral face Pm and disposed with a gap apart from each other in the circumferential direction of the axial line A1, each having fuel ejection holes H1 formed on the surface thereof for ejecting fuel, and a flow-pass forming cylinder 51T having a first cylinder part T1 that surrounds the main outer peripheral face Pm from the outer circumference side and a second cylinder part T2 continuous from the first cylinder part T1 to surround the radially converging outer peripheral face Ps from the outer circumference side with a diameter gradually shrinking toward the front side thereof in the direction of the axial line A1.SELECTED DRAWING: Figure 4 【課題】フラッシュバックの発生を抑制することが可能な燃焼器ノズル、燃焼器及びガスタービンを提供する。【解決手段】燃焼器ノズルは、軸線Ａ１に沿って延びる主外周面Ｐｍと、主外周面Ｐｍから軸線Ａ１方向の前方側に向かうにしたがって漸次縮径する縮径外周面Ｐｓとを有する軸体５１Ｍと、主外周面Ｐｍから径方向外側に向かって延出するとともに軸線Ａ１の周方向に間隔をあけて複数が設けられ、表面に燃料を噴出する燃料噴出孔Ｈ１が形成された旋回羽根６０と、主外周面Ｐｍを外周側から囲う第一筒部Ｔ１、及び、第一筒部Ｔ１に連続して縮径外周面Ｐｓを外周側から囲うとともに軸線Ａ１方向の前方側に向かうにしたがって漸次縮径する第二筒部Ｔ２を有する流路形成筒５１Ｔと、を備える。【選択図】図４