Long-distance pipeline seam welding protector and aligning device provided with protector
A technology for seam welding and long-distance pipelines, which is applied in the field of welding seam protection devices, can solve the problems of harsh working environment, affecting the smoothness of the inner wall, and high labor intensity, so as to shorten the construction time, clean the inner cavity of the pipeline, and improve the laying progress Effect
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[0014] The present invention applies for a separate long-distance pipeline seam welding protector, as shown in the figure, it includes several weld seam guard plates 1 shaped as parallelograms, and the top of each weld seam guard plate 1 has a structure corresponding to the inner wall surface of the pipeline 4 In accordance with the arc surface, each weld guard plate 1 is rotated in the same arrangement direction and installed on each push part 2 arranged uniformly and radially around the circumference, and is radially ejected or retracted by the push part 2 . When the pushed part 2 is pushed out radially, in the process of deflecting to the limit position in the same direction of each weld guard plate 1, each butt joint surface is completely connected with each other, so that each top arc surface is connected as a circumferential ring surface that fits with the inner wall of the pipe 4, Such as figure 1 with figure 2 As shown, the pair of vertex angles of the parallelogram ...
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