| 摘要 |
Self-supporting water pipe boiler with two or more co-axially arranged cage heating surfaces each of which comprises vertical pipes and upper and lower headers or reversing bends while the individual cage heating surfaces are differently designed as evaporator, superheater, or feed water preheater or hot water generator or one and the same cage comprises different heating surfaces, in which the inner cage defining the fire box and, if provided, other cages of the same temperature have their lower end resting on a foundation while to the upper end of said cage or cages there are connectable the remaining cage heating surfaces of said boiler as well as the flue chamber mantle with insulation, the water-steam separating vessel and a walk-on platform with accessories thereon including the burner system.
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