Coiler for industrial boiler

Abstract

The invention discloses a coiler for an industrial boiler, which comprises a plurality of straight pipes and a plurality of elbows, wherein every two adjacent straight pipes are connected end to end through an elbow, a U-shaped location block with a U-shaped cross section is arranged between every two adjacent straight pipes and is welded and fixed to the outer surface of one of the every two adjacent straight pipes through top ends of a left convex arm and a right convex arm of the U-shaped location block, each U-shaped location block is provided with a chute along the bottom in the longitudinal direction, one end of each chute is communicated with the outside, a T-shaped location block with a T-shaped cross section is arranged in each U-shaped location block in a clearance fit manner and can move along the chute, and after the T-shaped location block penetrates through the chute, the bottom end of the T-shaped location block is welded and fixed to the outer surface of the other straight pipe in the every two adjacent straight pipes. The coiler has the advantage of high overall stability.

Description

technical field [0001] The present invention relates to serpentine tubes for industrial boilers. Background technique [0002] The serpentine tube is a heating pipe that has been bent many times in a plane; in industrial boilers, in order to increase the heat transfer area of ​​the boiler and improve the heat transfer efficiency of the boiler, the serpentine tube is mostly used as the main heat exchanger of the boiler. Hot surface; the structure of the serpentine tube currently used is: it includes multiple straight tubes and multiple curved tubes, two adjacent straight tubes are connected end to end through curved tubes, and the two adjacent straight tubes are fixedly welded There are integral positioning blocks. During the operation of the boiler, the water passing through the serpentine tube is always in a boiling state, which is very easy to generate stress that causes the serpentine tube to shake; since the integral positioning block and the straight tube are rigidly c...

AI Technical Summary

Problems solved by technology

During the operation of the boiler, the water passing through the serpentine tube is always in a boiling state, which is very easy to generate stress that causes the serpentine tube to shake; since the integral positioning block and the straight tube are rigidly connected, when the serpentine tube When there is shaking stress, this stress will directly act on the welding point where the integral positioning block and the straight pipe are welded to each other. A little longer time will make the welding point where the integral positioning block and the straight pipe are welded loose, resulting in The integral positioning block falls off from the outer wall of the straight pipe, which not only reduces the overall stability of the serpentine pipe, but also reduces the safety of boiler operation

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