LASER CLAD FUEL INJECTOR PREMIX BARREL

• Main Authors: CORR, ROBERT ANTHONY, II, BARKER, PETER, KRICHEVER, ALEXANDER ILICH, MONTAGUE, JOHN PRESTON
• Format: Patent
• Language: English; Spanish
• Published: 13.10.2014
• Subjects: AIR INTAKES FOR JET-PROPULSION PLANTS; BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; COMBUSTION APPARATUS; COMBUSTION ENGINES; COMBUSTION PROCESSES; CONTROLLING FUEL SUPPLY IN AIR-BREATHING JET-PROPULSION PLANTS; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; GAS-TURBINE PLANTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGHVELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INDEXING SCHEME FOR ASPECTS RELATING TONON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES ORJET-PROPULSION PLANTS; INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUSSUBCLASSES OF CLASSES F01-F04; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION; TECHNICAL SUBJECTS COVERED BY FORMER USPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

A fuel injector (12) for a gas turbine engine (10) may include a center body (36) disposed about a longitudinal axis (50), and a premix barrel (26) positioned radially outwardly from the center body to define an annular passageway (16) between the center body and the premix barrel. The annular passageway may extend from an upstream end that is configured to be fluidly coupled to a compressor (2) to a downstream end that is configured to be fluidly coupled to a combustor (14). The premix barrel may include a first portion (24) at the upstream end and a second portion (22) at the downstream end. The first portion may include a stainless steel material, and the second portion may include a nickel based superalloy material. The second portion may be coupled to the first portion by a laser clad coupling. Un inyector de combustible (12) para un motor de turbina de gas (10) puede incluir un cuerpo central (36) dispuesto sobre un eje longitud (50), y un barril de premezcla (26) colocado de manera radial hacia afuera desde el cuerpo central para definir una vía anular (16) entre el cuerpo central y el barril de premezcla; la vía anular puede extenderse desde un extremo ascendente que está configurado para acoplarse de manera fluida a un compresor (2) a un extremo descendente que está configurado para acoplarse de manera fluida a un combustor (14); el barril de premezcla puede incluir una primera porción (24) en el extremo ascendente y una segunda porción (22) en el extremo descendente; la primera porción puede incluir un material de acero inoxidable, y la segunda porción puede incluir un material de superaleación de níquel; la segunda porción puede acoplarse a la primera porción mediante un acoplamiento de revestimiento láser.