Automatic surfacing device of inner wall anticorrosion layer of 90-degree bent pipe and automatic surfacing method thereof

Abstract

The invention provides an automatic surfacing device of an inner wall anticorrosion layer of a 90-degree bent pipe and an automatic surfacing method thereof, belonging to the technical field of automatic surfacing and solving the technical problems of long surfacing period and hardly guaranteed surfacing quality of the inner wall anticorrosion layer of a 90-degree bent pipe in a heavy type pressure vessel in the background art. In the automatic surfacing device and the automatic surfacing method, the rotor angle and the displacement of a welding gun head (12-1) is completed through the rotation of a rotary angle motor (12-3) and the displacement of a three-dimensional guide rail (14), the rotation of an overturn motor (5) enables the 90-degree bent pipe to rotate, the swinging of a swinging motor (8) enables the welding gun head (12-1) to carry out surfacing at a certain speed, accordingly, the previous factors enable the inner wall of the 90-degree bent pipe to realize high-efficiency and high-quality surfacing. The invention is mainly used for the surfacing of the inner wall of the 90-degree bent pipe in the heavy type pressure vessel with the working environment of high temperature, high pressure and corrosion medium contacting.

Description

technical field [0001] The automatic surfacing device and automatic surfacing welding method for the corrosion-resistant layer on the inner wall of a 90° elbow proposed by the present invention belong to the technical field of automatic surfacing, and particularly relate to the automatic surfacing of the corrosion-resistant layer on the inner wall of a 90° elbow used in a pressure vessel Welding device and automatic surfacing welding method thereof. Background technique [0002] For heavy-duty pressure vessels with high temperature, high pressure and corrosive media, such as pressure shells in nuclear power units, hydrogenation reactors in ethylene plants, liquefaction furnaces and vaporizers in large coal gas plants, etc., the pressure vessels The inner wall needs surfacing and corrosion resistance layer, and the automatic surfacing welding of the inner wall of the 90° elbow on the feed pipe and pool material pipe has always been a difficult problem in production. [0003]...

AI Technical Summary

Problems solved by technology

[0003] The Harbin Welding Research Institute has developed an automatic surfacing machine for the inner wall of a 30° elbow, and it has been applied in production. This kind of surfacing adopts the rotation and displacement of the workpiece, and the circular bead is arranged in a spiral manner. This kind of surfacing welding cannot realize 90° elbows. The overall surfacing welding of the inner wall can only divide the 90° into three sections, and after surfacing the three sections of pipes, they are assembled into a 90° elbow. Quality is not easy to guarantee

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