Water wall penetrating structure for low-temperature heating surface of tower furnace and installation method

Abstract

The invention provides a water wall penetrating structure for a low-temperature heating surface of a tower furnace and an installation method. According to an existing structure, the pitch of the low-temperature heating surface arranged above a flue is small and is mostly between 100 and 120mm, and a heating surface penetrating wall is of a welding structure, so that the structure brings great difficulty to boiler sealing and maintenance work after operation. The water wall penetrating structure comprises a set of low-temperature heating surface pipes (4), wherein the set of low-temperature heating surface pipes penetrate through a low-temperature heating surface hanging pipe (5) and are connected with a low-temperature heating surface scattered pipe (2) through an asymmetric tee joint (6); the low-temperature heating surface scattered pipe penetrates through water wall pipes (3) and is connected with a header (1); one end of the asymmetric tee joint is connected with two low-temperature heating surface pipes, and the other end of the asymmetric tee joint is connected with one low-temperature heating surface scattered pipe; one low-temperature heating surface scattered pipe penetrates between the two water wall pipes; the water wall pipes are arranged in parallel at equal intervals; and a water wall bent pipe is arranged every other water wall straight pipe. The invention is used for the water wall penetrating structure for the low-temperature heating surface of the tower furnace.

Description

technical field [0001] The invention relates to a structure and an installation method for passing through a water-cooled wall on a low-temperature heating surface of a tower furnace. Background technique [0002] Compared with the п-type boiler, the tower boiler has many advantages, such as the flue gas does not turn to the uniform distribution, the deviation of the steam temperature is small, the horizontal arrangement of the heating surface can be self-draining, it has excellent standby and fast start-up characteristics, and the structure is simple and the floor space is small. Therefore, In recent years, domestic power plants have more and more projects choosing tower furnace type, but this type of furnace also has its shortcomings. The pitch of the low-temperature heating surface arranged above the flue is small, mostly between 100~120mm, and the heating surface The wall penetration is a welded structure, which brings great difficulties to the boiler sealing and mainten...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a structure and installation method for the low-temperature heating surface of the tower furnace to penetrate the water-cooled wall. This structure effectively solves the problems of sealing the low-temperature heating surface tube through the water-cooled wall tube and difficult maintenance after operation.

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