Method for rapidly replacing array type heated pipes of converter waste heat boiler and arc-shaped clamp

Abstract

The invention discloses a method for rapidly replacing array type heated pipes of a converter waste heat boiler, and belongs to the technical field of waste heat boilers. The method comprises the steps of offline heated pipe array manufacturing, wherein two arc models are manufactured according to heated pipe position parameters and the radian of a heated pipe replacement area, wherein each arc model comprises a first containing part; two or more heated pipes are placed in the first containing parts of the arc models; the two ends of the heated pipes are supported by the arc models correspondingly; then fins are welded among the two or more heated pipes in a CO2 shielded welding mode, and a heated pipe array with radian is manufactured; and the manufactured heated pipe array is stably clamped in the cutting area through an arc-shaped clamp, after the heated pipe array is clamped, the heated pipe array is in butt joint with original heated pipes in the waste heat boiler, welding is conducted through manual welding, the arc-shaped clamp is dismantled after welding is completed, and repairing of the cutting area is completed. The method is simple, different welding modes can be adopted for cooperation, the welding effect is better, damage is not likely to happen, the replacement speed is high, and alignment of new equipment and old equipment is easy to achieve.

Description

technical field [0001] The invention belongs to the technical field of waste heat boilers, in particular to a method for quickly replacing heat-receiving tubes of an array type converter waste heat boiler and an arc fixture. Background technique [0002] The heat-receiving tube of the converter waste heat boiler currently used is a seamless steel pipe with a diameter of 42mm*wall thickness of 5mm. For the perforation and water leakage of the heat-receiving pipe, the main measure is to carry out the tube skin subsidy mosaic method. This method is to make the diameter 42mm*wall thickness 5mm*length 1500mm Cut the seamless steel pipe into 3 equal parts and make it in advance; when the heating pipe is perforated and leaks, find the leak point, and gently tap the heating pipe at a distance of 1 meter up and down from the leak point. The inlaid length is fixed at 1500mm. If it is too thin, continue to knock out, and finally confirm the patching length of the tube skin, and then ca...

AI Technical Summary

Problems solved by technology

This prior art requires a specific cutting method and welding method, and the welding method is operated by two people. It is difficult to guarantee the quality of the weld seam, and a large amount of labor is required.

[0011] According to the above problems, the replacement method of the heat exchange tube of the waste heat boiler needs to be improved urgently to eliminate the disadvantages of manual welding, water leakage, low replacement efficiency, and difficult alignment of the heating tube.

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