Internal protection device for stainless steel pipe repair

Abstract

The invention relates to a stainless steel tube repairing internal protection device, and belongs to the technical field of welding devices. The stainless steel tube repairing internal protection device comprises a movement trolley, a height adjusting device, a rotating adjusting device, an angle adjusting device, a push rod, an air groove, an air tube and an endoscope; the height adjusting device is arranged above the movement trolley; the rotating adjusting device is arranged above the height adjusting device; the angle adjusting device is arranged above the rotating adjusting device; the air groove is arranged above the angle adjusting device. The stainless steel tube repairing internal protection device is mainly used for internal welding line gas protection during stainless steel tube repair welding, welding line oxidation after welding is prevented, and the welding line molding after repair welding is good.

Description

technical field [0001] The invention belongs to the technical field of welding devices, and in particular relates to an internal protection device for repairing stainless steel pipes. Background technique [0002] When the stainless steel pipe weld has defects, it needs to be repaired. However, there is no corresponding product on the market for the inner weld protection device used in the rework position. At present, according to the size of the pipe diameter, there are mainly three ways to realize the internal protection effect of the inner weld gas in the workshop site: [0003] The first one, for the pipe diameter greater than or equal to Φ426mm, a single thin operator can climb into the pipe, use wooden sticks and other supports to directly press the air groove against the inner side of the pipe to be repaired, so that the inner shielding gas passes through the pipe from The output of the gas groove achieves the effect of internal protection of the inner weld gas; ...

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Problems solved by technology

[0004] The second type, for the pipe diameter less than Φ426mm, people cannot locate the air groove. The general structure is designed to fix the bracket, the air groove is fixed on the bracket, and the contact part is made of soft high-temperature resistant material to prevent the gas groove and the inner wall of the pipe from being scratched. In this way, it is not easy to manually determine the specific position of the defect in the pipe. Only by making an ultra-long air groove to increase the protection range, the disadvantage is that the gas transmission volume is large and the production cost is high;

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