Transformer for welding machine

Abstract

The invention discloses a transformer for a welding machine. The transformer comprises yokes, multiple core columns, coils and a water circulating pipeline. The yokes are formed by rolling strip-shaped cold-rolling silicon steel sheets. The multiple core columns are located between the two yokes. The two yokes and the core columns are fixed through bolts. The water circulating pipeline penetrates from the center of one yoke, is spirally wound, extends downwards to penetrate through a cavity enclosed by the multiple core columns, and penetrates out of the middle of the other yoke. By means of the principle, the transformer is convenient to disassemble, even if iron cores are disassembled many times, the quality is not prone to being reduced, edge curling or piling of the yokes is avoided, heat dissipation is ensured, and the situation that because temperature rises too fast, the transformer ages fast is avoided.

Description

technical field [0001] The invention relates to the field of welding machines, in particular to a transformer for welding machines. Background technique [0002] After the welding machine transformer is repaired, the no-load current will generally increase, especially the high-voltage range. The reason for the above problems is that the quality of the iron core decreases after the repair. At the end, there will always be some pieces that cannot be inserted, so the cross-sectional area of ​​the iron core is reduced and the magnetic induction intensity is increased; on the other hand, the reason is that the yoke iron silicon steel sheet is curled or Pile up, causing the core air gap to become larger. In addition, in actual use, the transformer is prone to failure and needs to be disassembled frequently. However, the iron core of the existing transformer is troublesome to disassemble. If the temperature exceeds the temperature limit of the insulating material, it is easy to d...

AI Technical Summary

Problems solved by technology

[0002] After the welding machine transformer is repaired, the no-load current will generally increase, especially the high-voltage range. The reason for the above problems is that the quality of the iron core decreases after the repair. At the end, there will always be some pieces that cannot be inserted, so the cross-sectional area of ​​the iron core is reduced and the magnetic induction intensity is increased; on the other hand, the reason is that the yoke iron silicon steel sheet is curled or piled up, causing the core air gap to become larger

In addition, in actual use, the transformer is prone to failure and needs to be disassembled frequently. However, the iron core of the existing transformer is troublesome to disassemble. If the temperature exceeds the temperature limit of the insulating material, it is easy to damage the transformer and accelerate the aging of the transformer

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