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    • 5. 发明授权
    • Combination fire and water tube boiler
    • 组合火和水管锅炉
    • US3638621A
    • 1972-02-01
    • US3638621D
    • 1969-08-26
    • AQUA CHEM INC
    • CRAIG GLENN D
    • F22B7/14F22B7/06
    • F22B7/14
    • A natural circulation, shockproof, horizontal furnace, combination water tube and fire tube boiler. The water tubes comprise a plurality of membrane-connected, ring-shaped tubes, defining a substantial portion of the primary combustion cylinder for the burner flame, surrounded by a larger diameter, secondary combustion cylinder which defines the remaining portion of the longitudinal combustion zone, and which redirects the combustion gases in a return path back over the outer surface of the water tube-membrane structure. The secondary combustion cylinder is connected only at one end and is free to expand and contract due to temperature changes without stressing the boiler or the combustion cylinder. The combustion gases then reverse direction a second time in a reversal chamber to pass through horizontal fire tubes extending the length of the boiler directly through the large outer shell containing the water to be heated, and then out through the flue gas outlet. This novel boiler unit can be used to generate steam, or for hot water applications with minor modifications.
    • 自然循环,防震,卧式炉,组合水管和消防管锅炉。 水管包括多个膜连接的环形管,其限定用于燃烧器火焰的主燃烧气缸的大部分,其由限定纵向燃烧区的剩余部分的较大直径的二次燃烧气缸围绕, 并且其将返回路径中的燃烧气体重定向到水管 - 膜结构的外表面上方。 二次燃烧缸仅在一端连接,并且由于温度变化而自由膨胀和收缩,而不会对锅炉或燃烧气缸施加压力。 燃烧气体然后在反转室中再次反向,以通过延伸锅炉长度的水平火管直接通过包含待加热水的大外壳,然后通过烟气出口排出。 这种新颖的锅炉单元可用于产生蒸汽,或用于轻微改装的热水应用。