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    • 5. 发明授权
    • Refractory flame-gunning apparatus
    • 耐火火焰装置
    • US4678120A
    • 1987-07-07
    • US912176
    • 1986-09-22
    • Masataka Matsuo
    • Masataka Matsuo
    • F23D14/52A62C4/00B05B7/16B05B7/20B05B7/22F23D14/82F27D1/16H05H1/34B05B12/10
    • H05H1/34A62C4/00B05B7/205F23D14/825H05H2001/3473H05H2001/3494
    • A refractory flame-gunning apparatus has a feeder, a controller and a flame-gunning burner. The feeder has a refractory-powder feeding section, an inflammable-gas feeding section and a combustion-assisting-gas feeding section. The controller controls the supply of refractory powder, inflammable and combustion-assisting gases. The flame-gunning burner has a plurality of refractory powder and flame ejecting nozzles disposed at its tip. The flame-gunning burner has a gas mixer and a combustion-assisting-gas cutoff valve. The gas mixer has an inflammable-gas passage leading to the inflammable-gas feeding section, a combustion-assisting-gas passage leading to the combustion-assisting-gas feeding section, a gas mixing chamber communicating with the inflammable and combustion-assisting gas passages, and a mixed-gas passage the upstream side of which communicates with the gas mixing chamber and the downstream side of which communicates with the flame ejecting nozzles. The gas mixer is provided for each individual flame nozzle. The combustion-assisting-gas cutoff valve is provided in the gas mixer and is actuated by the gas pressure built up in the mixed-gas passage. When backfire occurs, the pressure in the mixed-gas passage rises to close the combustion-assisting-gas cutoff valve, whereby the backfire is put out instantaneously.
    • 耐火火焰喷射装置具有进料器,控制器和火焰喷枪。 进料器具有耐火材料粉末供给部,易燃气体供给部和燃烧辅助气体供给部。 控制器控制耐火粉末,易燃和助燃气体的供应。 火焰喷射式燃烧器具有设置在其顶端的多个耐火粉末和火焰喷射喷嘴。 火焰喷射燃烧器具有气体混合器和助燃气体截止阀。 气体混合器具有通向易燃气体供给部的可燃气体通路,通向燃烧辅助气体供给部的燃烧辅助气体通路,与可燃性燃烧辅助气体通路连通的气体混合室 以及混合气体通路,其上游侧与气体混合室连通,下游侧与火焰喷射喷嘴连通。 为每个单独的火焰喷嘴设置气体混合器。 燃气辅助气体截止阀设置在气体混合器中,并由混合气体通道中积聚的气体压力致动。 当发生回火时,混合气体通道中的压力升高以关闭燃烧辅助气体截止阀,由此立即熄灭反作用力。