FUEL INJECTOR ASSEMBLY IN COMBUSTION TURBINE ENGINE

• Main Authors: STOIA LUCAS JOHN, PUSHKARAN CHANDRASEKHAR, MELTON PATRICK BENEDICT, NADKARNI VAIBHAV, WILLIAM MICHAEL POSCHEL, WILLIS CHRISTOPHER PAUL
• Format: Patent
• Language: English; Japanese
• Published: 31.03.2016
• 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 provide a novel and innovative downstream injector configuration that avoids impacting annulus cooling.SOLUTION: A downstream nozzle for use in a combustor that includes: an inner radial wall 24 defining a combustion zone at a downstream side of a primary nozzle; and an outer radial wall 25 surrounding the inner radial wall so as to form a flow annulus 28 therebetween is provided. The downstream nozzle 45 may include: an injector tube extending between the outer radial wall and the inner radial wall; and a first plenum located adjacent to the injector tube and including a ceiling part and a floor part disposed at the inner side of the ceiling part and between the inner radial wall and the outer radial wall. A feed passage may connect the first plenum to an inlet formed at the outer side of the outer radial wall, and impingement ports may be formed penetrating through the floor part of the first plenum.SELECTED DRAWING: Figure 3 【課題】アニュラス冷却への影響を防ぐ新規かつ革新的な下流噴射器構成を提供すること。【解決手段】一次ノズルの下流に燃焼域を定める内側半径方向壁２４と、該内側半径方向壁を取り囲み該内側半径方向壁との間に流れアニュラス２８を形成する外側半径方向壁２５とを含む、燃焼器で使用する下流ノズル４５を提供する。下流ノズルは、外側半径方向壁と内側半径方向壁との間に延びる噴射管と、該噴射管に隣接し、天井部と、該天井部の内方で内側半径方向壁と外側半径方向壁との間に配置された床部とを含む第１のプレナムを含むことができる。供給通路は、第１のプレナムを外側半径方向壁の外方に形成された入口に接続することができ、インピンジメントポートは、第１のプレナムの床部を貫通して形成することができる。【選択図】図３