Welding system and welding method for all-position automatic welding of small-diameter pipeline

Abstract

The invention discloses a welding system and a welding method for all-position automatic welding of a small-diameter pipeline, and relates to the technical field of pipe welding. The welding system comprises a supporting main body with an opening, wherein a rotating disc and a clamp holder base are arranged on the supporting main body, and the rotating disc can rotate on the supporting main body; a welding gun is further arranged on the rotating disc; and a rapid clamping device is arranged on the clamp holder base and comprises clamping positioning angle blocks and clamping rotating blocks which are oppositely arranged around the rotating circle center of the rotating disc, and the clamping positioning angle blocks and the clamping rotating blocks can move relative to each other. The welding system can effectively meet the requirements of factory sites and other pipeline systems with small pipe diameters, high pipeline concentration, multiple pipeline turning points, multiple crossed positions and narrow construction space, and welding equipment is small in size and convenient to assemble and disassemble.

Description

technical field [0001] The invention relates to the technical field of pipe fitting welding, in particular to a welding system and welding method for all-position automatic welding of small-diameter pipes. Background technique [0002] The pipeline system includes long-distance large-diameter transmission pipelines and transmission pipelines for small-diameter processing systems such as plant sites. Compared with large-scale transmission pipelines, pipeline systems such as factory sites are different in that small-diameter pipelines have a high density, and there are many pipeline turning points and intersections, while large-scale pipelines are generally single pipelines with large diameters and long distances. Engineering work construction. [0003] At present, the material of the pipeline mainly involves ordinary carbon steel, stainless steel or other types of metals, and the construction of the pipeline system usually includes connecting pipelines with suitable diameter...

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Problems solved by technology

[0003] At present, the material of the pipeline mainly involves ordinary carbon steel, stainless steel or other types of metals, and the construction of the pipeline system usually includes connecting pipelines with suitable diameters and longitudinal dimensions by welding, mainly for liquid or gas transmission between pipe sections Provides a sealed connection, but because most of the small-diameter pipes are pipe-intensive, the pipe welding equipment is required to be relatively small in order to work in a narrow space and densely piped areas. It is difficult for traditional welding equipment to play its role in this situation At the same time, the existing welding of pipes below Φ325mm is mainly based on manual semi-automatic methods, while automatic welding only has the argon arc automatic welding process method. Although the single argon arc welding process method has better welding quality, it has low welding efficiency. The problem of slow speed is difficult to adapt to the requirements of the current high-efficiency era, especially for short-term construction projects, so speed is particularly important under the premise of ensuring quality

[0004] However, for the existing relatively mature automatic welding systems with large pipe diameters, most of them adopt the form of rail guidance, and for the welding of small pipe diameters, due to the relatively small pipe diameter, it is difficult to use rail-guided walking to achieve, and large pipes The automatic welding system for large-diameter pipes generally has a specific track specification and can only be applied to the corresponding pipe diameters. It is rare to be able to perform a single-track multi-diameter welding, which not only reduces the convenience of use, but also increases the cost input. low precision, too specific, and the rails need to be disassembled for each welding, which takes up part of the time and restricts the welding efficiency; at the same time, if the rail-guided method is applied to the welding construction of small-diameter pipes with dense spacing and small distances, Due to the narrow operating space, it is difficult to disassemble and assemble, so it is not suitable for this kind of on-site situation

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