Long-distance pipeline seam welding protector and aligning device provided with protector

Abstract

The invention provides a long-distance pipeline seam welding protector, comprising a plurality of seam protective plates the top of which are respectively provided with an arc surface matched with the inner wall of a pipeline, the seam protective plates are rotatably arranged on pushing parts which are uniformly and radially arranged on the circumference, and a butt surface which is radially pushed to a circular ring surface that is joined by each top arc surface and is adhered with the inner wall of the pipeline by the pushing part is arranged between each seam protective plate and an adjacent seam protective plate. By adopting the technical scheme of the invention, after welding is completed, the technical aim of smooth and clean inner wall of the pipeline is realized; and especially when an aligning device provided with the protector disclosed by the invention, multifunctional equipment which continuously complete a pipeline aligning operation and a welding seam protection operation for pipeline pavement is formed, and construction progress of the pipeline pavement is greatly sped up.

Description

technical field [0001] The patent application of the present invention relates to a welding seam protection device used in the welding construction of long-distance pipelines, and in particular to a protection device and a counterpart for a smooth and burr-free welded nozzle seam. Background technique [0002] At present, hand welding or semi-automatic welding construction methods are generally used in the laying of long-distance pipelines. During the welding operation, irregular welding bumps, burrs, molten iron and welding liquid crystals will be formed on the inner wall of the pipe, which will affect the smoothness of the inner wall and need to be manually removed. Welding, grinding the inner wall of the pipe, and cleaning the inner cavity of the pipe. These post-processing operations can only be removed manually at present. The working environment is harsh and labor-intensive, which also greatly delays the construction process. Contents of the invention [0003] The pu...

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Problems solved by technology

[0002] At present, hand welding or semi-automatic welding construction methods are generally used in the laying of long-distance pipelines. During the welding operation, irregular welding bumps, burrs, molten iron and welding liquid crystals will be formed on the inner wall of the pipe, which will affect the smoothness of the inner wall and need to be manually removed. Welding, grinding the inner wall of the pipe, and cleaning the inner cavity of the pipe. These post-processing operations can only be removed manually at present. The working environment is harsh and labor-intensive, which also greatly delays the construction process.

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