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    • 6. 发明公开
    • Highly concentrated supersonic material flame spray method and apparatus
    • 高浓度超材料火焰喷涂方法和装置
    • EP0136978A3
    • 1985-12-27
    • EP84810431
    • 1984-09-04
    • Browning, James A.
    • Browning, James A.
    • B05B07/20H05H01/42B05D01/06
    • B05B7/16B05B7/18B05B7/203B05B7/205B05B7/226H05H1/42
    • @ Particulate material, which may be heat softened or liquified, or which may remain solid, is fed outside of an electrical heating zone (2) for electric arc heating under pressure a continuous flow of heated gas (7), or outside of a combustion chamber (114) producing high pressure, high temperature products of combustion, axially into the converging flow of the heated gas or products of combustion while entering a converging portion (121a) of a flow expansion nozzle (41, 120) having a nozzle bore (41, 121) of a length that is at least five times the diameter of the nozzle bore. This restricts the diameter of the column of particles (P) passing through the nozzle bore to prevent build up of particle material on the nozzle bore, if molten or heat softened, while insuring sufficient dwell time within the bore to effect particle heat softening or melting, or if the particles are solid, to prevent abrasion of the nozzle bore wall by the particles while accelerating the particles to supersonic velocity.
    • 可以被热软化或液化或可能保持固体的颗粒材料被供给到电加热区域(2)外部,用于在加压的气体(7)的加热气体或燃烧室外部的压力下进行电弧加热 (114),当进入具有喷嘴孔(41,120)的流动膨胀喷嘴(41,120)的会聚部分(121a)时,产生高压,高温的燃烧产物,轴向地进入加热气体或燃烧产物的会聚流 ,121),其长度为喷嘴孔直径的至少五倍。 这限制了通过喷嘴孔的颗粒(P)的直径,以防止在熔融或热软化时在喷嘴孔上积聚颗粒材料,同时确保在孔内具有足够的停留时间以实现颗粒热软化或熔化 ,或者如果颗粒是固体的,则防止颗粒在将颗粒加速到超音速的同时磨损喷嘴孔壁。
    • 7. 发明公开
    • Burner for refractory flame-gunning apparatus
    • 燃烧器用于燃烧火焰喷射装置
    • EP0146278A3
    • 1985-11-21
    • EP84308101
    • 1984-11-22
    • NIPPON STEEL CORPORATION
    • Matsuo, Masataka c/o Nippon Steel Corporation
    • F23D14/46B05B07/20A62C04/02
    • H05H1/34A62C4/00B05B7/205F23D14/825H05H2001/3473H05H2001/3494
    • A refractory flame-gunning apparatus including a burner arrangement which is novel per se comprises a feeder (1), a a controller (2) and a flame-gunning burner (3). The feeder (1) comprises a refractory-powder feed section (4), a fuel feed section (5) and an oxidant feed section (6). The controller (2) controls the supply of refractory powder and fuel and oxidant. The flame-gunning burner (3) has a plurality of refractory powder and flame ejecting nozzles (81, 82) disposed at its tip. The burner has a gas mixer (65) and an oxidant cut-off valve (531. The gas mixer comprises a fuel passage (11) leading from the fuel feed section (5), an oxidant passage (14) leading from the oxidant feed section (6), a gas mixing chamber (65) communicating with the fuel and oxidant passages (11, 14), and a mixed-gas passage (31, 36) the upstream side of which communicates with the gas mixing chamber (65) and the downstream side of which communicates with the flame ejection nozzles (821. A gas mixer is provided for each individual flame nozzle. The oxidant cut-off valve is provided in the gas mixer and is actuated by gas pressure built up in the mixed-gas passage (31, 36). When backfire occurs in the apparatus the pressure in the mixed-gas passage (36) rises to close the oxidant cut-off valve (53), whereby the backfire is put out instantaneously. A temperature sensor (28) also operates a controller (36) to change the setting of valves (22-25) and replace the fuel and oxidant with inert gas delivered via inert gas lines (18, 19 and 20).
    • 10. 发明申请
    • DEVICE FOR FLAME SPRAYING OF COATING MATERIALS
    • 喷涂材料火焰喷涂装置
    • WO1988003058A1
    • 1988-05-05
    • PCT/CH1987000145
    • 1987-10-20
    • NOVA-WERKE AGLOEWE, Günter
    • NOVA-WERKE AG
    • B05B07/20
    • B05B7/205
    • A fuel and an oxidant are fed to a mixing chamber (21) where they are mixed. Inlet ducts (9) feed the mixture into a combustion area (8) to which is connected a nozzle, the mixture being burnt in the combustion area (8). In the centre of the combustion area (8) is arranged, in a hard metal inlet (5), the outlet aperture (14) of a material feed duct (10). The length of the material feed duct (10) is a multiple of its diameter, and on its inlet end (12)is located an entry cone (13) for a powder-like spraying material. The spraying material is fed into the device via the feed line (6) and brought together with the hot gas mixture in the combustion area (8). The gas mixture and spray material flow at a high speed through the nozzle duct (28). The overall device is provided with a cooling jacket, whereby the coolant duct (29), which surrounds the nozzle (2), has variations in its cross-section.
    • 将燃料和氧化剂进料到混合室(21)中,在混合室中混合。 入口管道(9)将混合物进入燃烧区域(8),喷射器连接到燃烧区域(8),混合物在燃烧区域(8)中燃烧。 在燃烧区域(8)的中心处,在硬质金属入口(5)中布置了供料管道(10)的出口孔(14)。 材料进料管道(10)的长度是其直径的倍数,并且在其入口端(12)上设置有用于粉末状喷涂材料的入口锥体(13)。 喷射材料通过进料管线(6)进料到装置中,并与燃烧区域(8)中的热气体混合物一起进入。 气体混合物和喷射材料通过喷嘴管道(28)高速流动。 整个装置设置有冷却套,由此围绕喷嘴(2)的冷却剂管道(29)在其横截面上具有变化。