STAGED FUEL AND AIR INJECTION IN COMBUSTION SYSTEMS OF GAS TURBINES

• Main Authors: HUGHES MICHAEL JOHN, BERRY JONATHAN DWIGHT
• Format: Patent
• Language: English; Japanese
• Published: 20.07.2017
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; 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; NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAMTURBINES; STEAM ENGINES; WEAPONS

PROBLEM TO BE SOLVED: To provide staged fuel and air injection in combustion systems of gas turbines.SOLUTION: A gas turbine includes: a combustor 13 coupled to a turbine 12, defining a working fluid flowpath 37; a compressor discharge cavity; a staged injector 51; stator blade airfoils 113 extending between an inboard sidewall 108a and an outboard sidewall 108a; and first and second coolant flowpaths 101a, 101b. The first coolant flowpath 101a includes: an intake section 103; an outtake section 105 including a downstream port connected to the staged injector 51 and an upstream port formed through the outboard sidewall; and a cooling circuit 104 through the airfoil 113. The second coolant flowpath 101b includes: an intake section 103; an outtake section 105 that comprises a downstream port connected to the staged injector 51 and an upstream port formed through the inboard sidewall; and a cooling circuit 104 through the airfoil 113.SELECTED DRAWING: Figure 21 【課題】ガスタービンの燃焼システムにおいて段階的な燃料および空気噴射を行う。【解決手段】作動流体流路３７を規定するタービン１２に結合された燃焼器１３と、圧縮器排出空洞と、段階的噴射器５１と、内部側壁１０８ａと外部側壁１０８ａとの間で延びた静翼エーロフォイル１１３と、第１および第２の冷媒流路１０１ａ、１０１ｂとを備え、第１の冷媒流路１０１ａは、吸気部１０３と段階的噴射器５１に接続された下流ポートおよび外部側壁を通して形成された上流ポートを具備する排気部１０５と、エーロフォイル１１３を通る冷却回路１０４とを具備する。第２の冷媒流路１０１ｂは、吸気部１０３と、段階的噴射器５１に接続された下流ポートおよび内部側壁を通して形成された上流ポートを具備する排気部１０５と、エーロフォイル１１３を通る冷却回路１０４とを具備する。【選択図】図２１