SU922888A1 - Welding transformer - Google Patents

Description

621. .314.21 (088.8)

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one

The invention relates to transformer technology, namely to welding transformers. Perhaps the application of the invention in the furnace and other transformers of medium and high power.

Known welding transformers with a split tape twisted magnetic circuit, high voltage coils, low voltage coils, which move along the magnetic circuit and the mechanism for regulating the welding current (1].

The disadvantages of these transformers are: rasssehtovka package of the magnetic circuit in the cutting zone, increasing the size of the magnetic circuit to maintain the welding current control limits, since the cut is made above or within the moving coils, increased in connection with the consumption of materials, the possibility of falling into the interface of the magnetic circuit items and so on

2

The purpose of the invention is to eliminate these disadvantages.

This goal is achieved by the fact that in a welding transformer containing a pair of split tape twisted magnetic cores, high voltage coils moving along a magnetic conductor, low voltage coils and a welding current control mechanism, before cutting the magnetic conductor in the cut zone a permanent electrical insulating bandage is applied, while the cut zone is located below the stationary high-voltage coils, and the junction of the magnetic cores is sealed with a high-temperature compound.

The elimination of the rasschetovka magnetic circuits in the cut zone is achieved by the imposition of a permanent electrical insulating bandage (for example, from sticky electrical insulating glass tape), which prevents the separation of the magnetic cores in the process of cutting and exploitation 922888 4

tion, and also increases the mechanical strength.

The preservation of the dimensions of the magnetic cores is achieved by the fact that the cutting zone of the latter is located below the stationary high-voltage coils, so that the cutting zone and the bandage on it do not hinder the movement of the moving secondary coils. In this regard, there is no need to increase the height of the magnetic cores to maintain the limits of welding current control.

The sealing of the junction of the magnetic cores is achieved by welding it with a high-temperature thermosetting compound (for example, based on epoxy resin),

FIG. 1 shows the proposed welding transformer (without casing), general view; in fig. 2 is a section A-A in FIG. one.

The welding transformer (Fig. 1) (without a casing) has a pair of twisted tape magnetic circuits 1; fixed high-voltage coils 2, installed and secured in the lower part of the magnetic circuit; moving along the magnetic conductor coil 3 low voltage; mechanism 4 for adjusting the welding current. Below the high voltage coils before cutting the magnetic cores, a permanent electrical insulating bandage 5 is applied. The interface of the magnetic cores 1 is sealed with a high-temperature thermosetting compound 6 (Fig. 2).

The use of the proposed welding transformer ₅ will reduce

consumption of expensive electrical steel by 4–5%, to increase the mechanical strength and reliability of the design.

ten

Claims (2)

Claim 1. A welding transformer having a split tape twisted magnesium 15 conductor, a high voltage coil mounted for movement along a magnetic conductor, a low voltage coil and a welding current control mechanism, about 20 in order to increase reliability, in the cut zone of the magnetic conductor electrical insulation bandage, and the cutting area is located under the fixed high voltage coils. 2. The transformer according to claim 1, characterized in that the cutting place is sealed with a high-temperature thermosetting compound.