Full-film type wall water-fire tube boiler

Abstract

The invention relates to a full-film type wall water-fire tube boiler. The boiler comprises a hearth which is of a full-film type wall structure, a burner which is fixedly connected to one end of the hearth, a turning smoke chamber which is of a full-film type wall structure, a heat exchanger and a steam drum. An outlet smokestack is arranged on one side of the hearth. One end of the turning smoke chamber is connected with the outlet smokestack, and the other end of the turning smoke chamber is connected with the heat exchanger. The connecting joint between the turning smoke chamber and the outlet smokestack and the connecting joint between the turning smoke chamber and the heat exchanger are each provided with an annular header. A film type wall water-cooled tube of the turning smoke chamber communicates with a shell of the heat exchanger through the annular header located at the position of the heat exchanger. The steam drum communicates with the film type wall water-cooled tube of the turning smoke chamber through the annular header located at the position of the outlet smokestack. Meanwhile, the steam drum directly communicates with a film type wall water-cooled tube of the hearth and forms a circulation heat exchange channel. The full-film type wall water-fire tube boiler includes various structures, boiler capacity covers the full industrial boiler range, and thus the boiler can be widely applied to various conditions where water-fire tube boilers are needed.

Description

technical field [0001] The invention relates to a boiler, in particular to a full-membrane wall water-fire tube boiler. Background technique [0002] Membrane wall, also known as membrane water wall, refers to the furnace wall of a boiler welded into pieces by pipes and flat steel. The membrane wall has the advantages of simplicity, saving steel, good heat preservation and good air tightness, and it only needs to lay silicate heat preservation material outside the furnace, without building refractory bricks, so that the thickness and weight of the furnace wall are greatly reduced. Reduce and simplify the furnace wall structure and reduce the total weight of the boiler. At present, only water-tube boilers in the market generally have a full-membrane wall structure. Although coal-fired industrial boilers also use a membrane-type wall structure, they are mainly used in the furnace part, or the peripheral structure of the high-temperature convection tube bundle, and there are s...

AI Technical Summary

Problems solved by technology

Generally, serpentine water pipes are used on the convective heat exchange surface, which has low heat exchange efficiency and large steel consumption.

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