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    • 2. 发明申请
    • BOILER WATERWALL PANEL
    • 锅炉水面板
    • US20100300379A1
    • 2010-12-02
    • US12445808
    • 2007-04-18
    • Kazunari ItaiAkihiro TakeyaYoshinobu SochiMichio TanabeYoichi Matsubara
    • Kazunari ItaiAkihiro TakeyaYoshinobu SochiMichio TanabeYoichi Matsubara
    • F22B37/10
    • F22B37/102F22B37/04
    • It is an object to reduce the burden of a welding operation in producing a boiler waterwall panel and to reduce the burden of maintaining a furnace housing using the boiler waterwall panels thereby to improve the operating rate of the boiler. In a boiler waterwall panel 80, a panel body 70 with water passages is constituted by a plurality of metal seamless finned single tubes 60 as constituent units integrally produced by a hot extrusion method, etc., and joined by welding tip ends of fin portions 62. On at least one surface side of the panel body 70, fusion-bonded coating 81 for frame-like edge portions and fusion-bonded coating 82 for inner region, of a corrosion resistant alloy are formed. The finned single tube 60 has a single tubular portion 61 for a cooling water passage and a pair of fin portions 62 extending in the tube axial direction at peripheral opposite sides of the tube, and the external surface of the transition portion 63 is formed into a concave surface having a curvature radius of 3 to 6 mm.
    • 本发明的目的是减少在生产锅炉水壁板时的焊接操作的负担,并且减少使用锅炉水壁板维持炉壳的负担,从而提高锅炉的运行速度。 在锅炉水壁板80中,具有水通道的面板体70由多个金属无缝翅片单管60构成,作为通过热挤压法等一体制造的构成单元,并且通过焊接翅片部分62的末端 在面板主体70的至少一个表面侧,形成用于框状边缘部分的熔接涂层81和用于内部区域的熔合涂层82的耐腐蚀合金。 翅片式单管60具有用于冷却水通道的单个管状部分61和在管的周向相对侧沿管轴向延伸的一对翅片部分62,并且过渡部分63的外表面形成为 凹面的曲率半径为3〜6mm。