火管锅炉，又称锅壳式锅炉。基本结构是在大圆筒（锅壳）内装设小圆筒、管子（称谓“火管”）或其他形状的壳体（称谓“炉胆”），火管与大圆筒隔绝并形成夹套，夹套中容水，而火管及炉胆充作燃烧室和烟道，容纳火焰或烟气，燃烧产生或烟气带来的热量经火管壁传给水。
水火管锅炉 fire tube boiler ; DZL
直接火管锅炉 direct fire tube boiler
内火管锅炉 inside fire-tube boiler ; tube boiler
回焰式火管锅炉 return fire-tube boiler ; return tube boiler ; return flame boiler
兰开夏式火管锅炉 lancashire boiler
火管锅炉烟管锅炉 Scotch boiler ; fire-tube boiler
火管锅炉检验 fire tube boiler survey
外燃火管锅炉 externally fired fire tube boiler
船用余热火管锅炉 waste heat fire tube boiler
罐形火管锅炉 cylindrical fire tube boiler
并用此方法和方案对WNS4—8型火管锅炉完成了分析和试验。
Using this method and plan, we have analysed and tested WNS4-8 boiler.
主要设备，如不锈钢转化器、火管锅炉、主鼓风机、浓硫酸泵等均为国产。
The main equipment such as stainless steel converter, fire tube boiler, main blower and concentrated acid pumps were made at home.
将此应用于大庆油田的火管式锅炉，取得了显著的节能效果。
The strengthener has been applied to the fire-tube boilers on the Daqing Oilfield, and the effect of energy saving is remarkable.
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