Transformer welding

Patent name: welding method of transformer oil tank

Technical field:

The invention relates to a manufacturing process of a transformer oil tank, in particular to a welding method of a transformer oil tank.

Background technique:

The transformer is the main equipment of major power plants and substations. The price of a transformer is as high as 30-40 million yuan. The power plant not only requires the inherent quality of the transformer to be reliable, but also the appearance quality requirements are higher and higher, so the fuel tank welding line is beautifully formed. It is vital. The traditional welding method uses manual arc welding or manual gas shielded welding. The welded wire has many welded joints, uneven weld bead size, asymmetrical weld bead size, uneven corrugation, and uneven weld surface. The problem, especially the welding wire between the transformer tank wall and the external reinforcing plate accounts for more than 80% of the total wire amount, and the aesthetic appearance of the wire determines the overall appearance quality of the transformer. Although some foreign transformer factories have solved this kind of problems by using large-scale automatic welding devices, it is very expensive to purchase automatic welding devices, and it needs to occupy a certain working area, especially a certain amount of preparation time before welding, and there is efficiency. Low problems are not suitable for the production rhythm of our domestic enterprises.