SU69087A1 - Three Phase Welding Transformer - Google Patents

Description

In some types of resistance welding machines, welding transformers in a number of cases often fail, due to overheating of the windings. In these transformers, the primary winding is a single multi-layer coil. Overheating and closing the turns in the middle part of the coil entails the need to manufacture a new primary winding, which is associated with loss of copper and time.

The proposed three-phase welding transformer is free from these disadvantages. It is made with an W-shaped core, carrying; alternating flat primary and secondary windings. The secondary winding is made of conductive pipes through which the cooling fluid flows. The dryness of the invention lies in the fact that the turns of the secondary frosting are made in the form of brackets located between the turns of the primary winding and connected at their ends to the tubular chambers, one of which is current and water supply, and the other is current. drainage w.

Pa figs. 1 shows a general view of the proposed transformer and a section along AA; in fig. 2-electrical transformer winding circuit; in fig. 3-schematic perspective view of the secondary winding (low voltage) and a circuit for cooling the windings of the windings.

The transformer has a W-shaped magnetic core / transformer steel.

The primary winding 2 is made of a series of disk coils located on the rods of the magnetic circuit in one row. The coils of the secondary winding 3 are made of copper pipes bent in horseshoe-shaped (in the form of b) and arranged with an alternating order with the coils of the primary winding, t . e. between the individual coils.

During intensive operation, the transformer may be cooled by passing coolant through the secondary winding. For the supply and removal of fluid, there are tubular stools 4 and 5, to which the ends of the turns are attached and which are also used for sub-no. 69087-2 -

yes and current drain. By increasing or decreasing the fluid flow, you can adjust the temperature of all parts of the transformer; Therefore, when working in conditions of short circuit for a long time, when welding large products, non-heating of the transformer windings does not occur. In addition, at the specified location of the windings, in case of failure of a separate phase or a separate coil, it can be easily replaced without disassembling the entire transformer.

Secondary 0 | strings; they can change during repairs but the whole phase immediately, which does not require complete loosening of the transformer iron.

The proposed transformer design allows for an increase in the current density in the windings and induction in the iron, provided that the normal temperature of all parts of the apparatus is guaranteed under all operating conditions.

At the same time, this construction gives savings to iron and copper (it reduces the flow of dislocations (due to the diode-like form of the coils), increases the efficiency).

Finally, the output of the six ends of the secondary wire: allows you to simultaneously weld the product at six points with six electrodes, which improves the productivity of the welding machine.

Subject invention

A three-phase welding trapsformer with a W-shaped core, non-drying alternating nloskie windings, of which the secondary is made of conductor w, their pipes through which the cooling fluid flows through, and the turns of the secondary winding are made in the form brackets located between the coils. And the primary winding and connected at their ends to the pipe. One hundred KafM - GAHH from which are current and water supply, and another, current and drainage.

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