COMBUSTOR AND GAS TURBINE

• Main Authors: TANAKA KATSUNORI, TSUNODA NAOKI, NISHIDA KOICHI, TAKIGUCHI TOMOSHI, AKAMATSU SHINJI
• Format: Patent
• Language: English; Japanese
• Published: 28.04.2016
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; ENGINE PLANTS IN GENERAL; 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; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To effectively reduce probability of occurrence of damage to a combustor.SOLUTION: A combustor comprises: a tail pipe 30 which forms therein a flow passage; and an inner cylinder 20 which is inserted into the tail pipe 30 from an upstream side of the flow passage, which blows combustion gas into the flow passage, and which defines a clearance S1 between an inner circumferential surface 30a of the tail pipe 30 and the inner cylinder 20 for blowing compressed air A from an outlet into the flow passage, and a notch section 47 recessed from a downstream end portion of the inner cylinder 20 to an upstream side thereof and a purge air introduction hole introducing the compressed air A within the clearance S1 into the notch section 47 are formed in the inner cylinder 20.SELECTED DRAWING: Figure 3 【課題】燃焼器に損傷が生じる可能性を効果的に低減する。【解決手段】内側に流路を形成する尾筒３０と、前記流路の上流側から前記尾筒３０内に挿入されて燃焼ガスを前記流路内に吹き出すとともに、前記尾筒３０の内周面３０ａとの間に圧縮空気Ａを、出口から前記流路内に吹き出す間隙Ｓ１を画成する内筒２０と、を備え、前記内筒２０に、該内筒２０の下流側の端部から上流側に向かって凹む切欠き部４７と、前記間隙Ｓ１内の圧縮空気Ａを前記切欠き部４７内に導入するパージ空気導入孔と、が形成されている。【選択図】図３