NOZZLE FOR COMBUSTOR, COMBUSTOR, AND GAS TURBINE

• Main Authors: DOMEN SHOHEI, INOUE KEI, ICHIKAWA YUICHI, TANIGUCHI KENTA, MIYAMOTO KENJI, TANIMURA SATOSHI
• Format: Patent
• Language: English; Japanese
• Published: 27.09.2018
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; GAS-TURBINE PLANTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

PROBLEM TO BE SOLVED: To inhibit a flame from moving toward a tip part of a nozzle when back fire occurs and reduce influence of heat on a fuel.SOLUTION: A nozzle for a combustor includes a nozzle body 2 extending along an axis. The nozzle body 2 includes: a first fuel passage 21 which is formed along the axis Am and in which a first fuel F1 circulates; a first fuel jet passage 22 which extends to an outer peripheral surface of the nozzle body from the first fuel passage 21 toward the tip side and jets the first fuel from the outer peripheral surface; an airflow passage 24 which extends in an axial direction Da at the radial outer side of the axis relative to the first fuel passage 21 and in which purge air PA circulates; and an air jet passage 25 which extends from the airflow passage 24 toward a tip center of the nozzle body 2 and jets the purge air PA from the tip center.SELECTED DRAWING: Figure 4 【課題】逆火が発生した場合に火炎がノズルの先端部に向けて遡上するのを抑制するとともに、燃料に対する熱の影響を少なくする。【解決手段】軸線に沿って延びるノズル本体２を備え、ノズル本体２は、軸線Ａｍに沿って形成され、第一の燃料Ｆ１が流通する第一燃料通路２１と、第一燃料通路２１から先端側に向かうにしたがってノズル本体の外周面に延びて、外周面から第一の燃料を噴出する第一燃料噴出路２２と、第一燃料通路２１よりも軸線の径方向外側で軸線方向Ｄａに延びて、パージ空気ＰＡが流通する空気流通路２４と、空気流通路２４からノズル本体２の先端中央に向かって延びて、先端中央からパージ空気ＰＡを噴出する空気噴出路２５と、を備える燃焼器用ノズルを提供する。【選択図】図４