Quick plug-in pipe multi-point synchronous automatic welding welding unit

Abstract

The invention discloses a quick plug-in mounting type pipeline multi-point synchronous automatic welding unit which is designed for remarkably improving the pipeline welding speed and welding quality. The welding unit consists of a pneumatic lifting mechanism, a vertical welding gun adjustment mechanism, a horizontal welding gun adjustment mechanism, a wire feeding mechanism, a welding gun and an automatic wire shearing mechanism. A dovetail guide rail is used for being quickly fixed to a welding machine in a plug-in mounting mode, the pneumatic lifting mechanism, the vertical welding gun adjustment mechanism and the horizontal welding gun adjustment mechanism are used for optical positioning adjustment of the welding gun, the wire feeding mechanism is used for initiatively feeding wires for the welding gun, the automatic wire shearing mechanism is used for replacing manual wire shearing, and an aviation plug and a gas circuit quick plug-in interface are used for forming the welding unit integrated and modularized highly. The welding unit represents historic leap of a pipeline welding technology, quick installation and dismounting on the automatic welding machine can be achieved by means of the modularized integrated design, quick switching of the welding units of synchronous automatic welding machines for pipelines different in pipe diameter can be achieved, the wires are easy and convenient to change, operation procedures are simplified, the welding preparation time is short, and the overall construction efficiency is high.

Description

technical field [0001] The invention relates to a fast plug-in multi-point synchronous automatic welding unit for pipelines, which belongs to the technical field of oil and gas pipeline welding construction. Background technique [0002] With the rapid growth of oil and gas energy consumption demand and the advancement of science and technology, the construction of oil and gas pipelines has entered a peak period and is developing towards high-efficiency construction. The speed and quality of pipeline construction have gradually become the focus of attention of construction parties, especially It is the welding efficiency of the key link that has attracted more attention. At present, pipeline construction has transitioned from manual welding to semi-automatic welding and automatic welding. All-position automatic welding equipment has fast welding speed, high efficiency, and simple operation, which can greatly reduce the labor intensity of welders. It has become the mainstream...

AI Technical Summary

Problems solved by technology

However, most of the all-position automatic welding technologies in use are single-torch automatic welding or double-torch automatic welding, and most of them are downward welding methods, that is, the single-torch welding torch or multi-torch welding torch is driven from the pipeline by its moving carrier. Weld from 0 o'clock to 6 o'clock. After the single-layer welding is completed, it will be brought back to the 0 o'clock position by the moving carrier for the next welding process, which restricts the improvement of welding speed to some extent.

At the same time, the existing automatic welding process is prone to defects such as incomplete fusion between weld layers, pores, incomplete penetration, discontinuous weld bead and undercut during construction, and it is difficult to replace the wire feeding reel of the existing automatic welding equipment, which restricts It fully utilizes the advantages of pipeline automatic welding technology and improves welding efficiency

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