SU93795A1 - Arc Welding Device - Google Patents

Description

The subject of the invention is an arc welding apparatus consisting of a welding transformer and a reactor.

In known structures of such devices, the consumption of active materials (electrical steel and copper winding) for a reactor connected in series to the secondary circuit of a transformer is significant, since the characteristics of the reactor are determined by the maximum welding current and inductive voltage drop in the reactor, which is only slightly less at the secondary terminal of the transformer.

In order to reduce the number of active materials of the reactor, and consequently, its dimensions, the proposed device is designed in such a way that part of the inductive resistance is transferred from the reactor part to the transformer. This achieves some asymmetry in the performance of the primary and secondary windings of the transformer.

The circuit of the proposed device for arc welding is shown in the drawing.

On the rods x 1 and 2 of the magnetic circuit of the transformer are placed a cervical winding 3 and a secondary

winding 4. At the same time on one of the rods, for example on the rod /. Most of the turns of the primary winding and the smaller portion of the turns of the secondary winding are located. On the other rod, for example on the rod 2, there are a smaller part of the turns of the primary winding and the patient; and a part of the turns of the secondary winding.

The secondary winding 4 of the transformer is connected in series with the reactor winding 5 located on the tagging system 6. A source of power {connects to the terminals 7, and the welding electrodes to the terminals 8.

Thus, due to the asymmetric performance of the primary and secondary windings of the transformer, an increase in the transformer dissipation is achieved, which makes it possible to reduce the inductance of the reactor and reduce its weight and size.

The subject is invented;

A device for arc welding, consisting of a transformer and a reactor, is necessary so that in order to reduce the dimensions of the reactor by increasing the inductance of the transformer, a part of its windings located on different rods of the magnetic circuit have different number of turns.