Welding method for pipeline maintenance

By inserting isosceles triangle oblique iron before pipeline maintenance and welding and tightening, the problem of equipment displacement after welding is solved, improving maintenance safety performance and reducing costs.

CN119635056APending Publication Date: 2025-03-18BAIYIN NONFERROUS POWER CO LTD +1
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Patent Information

Application Number
CN202510057665.4
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-01-14
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

During pipeline maintenance, welding operations cause inward tension to occur after the pipeline welds cool down, causing displacement of the water supply equipment, causing abnormal vibrations and accidents in the equipment.

Method used

Before welding, insert isosceles triangle oblique iron on and below the weld, and weld it to the connecting points of the pipes on both sides to ensure that the oblique iron does not fall off.

Benefits of technology

By using oblique iron to fix the pipe, the equipment displacement after welding is avoided, the maintenance safety performance is improved, and the maintenance cost and labor consumption are reduced.

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Abstract

The invention relates to the technical field of pipeline maintenance, and discloses a pipeline maintenance welding method which comprises the following steps: S1, when pipeline maintenance operation is carried out in an equipment room and before welding operation is carried out on a pipeline in the equipment room, inclined iron is inserted above and below a welding seam and is tightened, and the inclined iron is ensured not to fall off; s2, the inclined iron is welded and fastened with the connecting points of the pipelines on the two sides; s3, the rest parts needing to be welded are welded; and S4, after welding is completed, the inclined iron inserted into the welding seam is removed, and the remaining part is welded. Equipment displacement caused in the pipeline maintenance welding operation process can be avoided, the maintenance cost is greatly reduced, manpower is saved, and the tapered iron is easy to manufacture, low in cost, easy and convenient to operate and install and extremely high in practicability.
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