Novel anti-overheating shielding method for converter transformer

Abstract

The invention relates to a novel anti-overheating shielding method for a converter transformer, and belongs to the technical field of transformer protection methods. According to the technical scheme, (1) silicon steel sheets are cut into long strips with specified widths, a certain number of silicon steel sheets are clamped through clamping pieces, a layer of base plate is cushioned at the bottoms of the silicon steel sheets, and an integral magnetic shielding plate is fixed; (2) the welding parts of the magnetic shielding plate with the box cover and the box bottom are not painted, and other parts are painted for protection; and (3) the magnetic shielding plate is welded to and mounted on the internal reinforcing iron of the box cover and the box bottom. The transformer has the beneficial effects that the shielding plates are additionally arranged at the lower part of the box cover and the upper part of the box bottom, so that the problems of loss and overheating in the box cover and the box bottom caused by leakage magnetic flux generated by the coil and the lead are prevented, and the safe operation of the transformer is ensured.

Description

technical field [0001] The invention relates to a novel shielding method for preventing overheating of a converter transformer, belonging to the technical field of transformer protection methods. Background technique [0002] At present, as the capacity of the transformer becomes larger and the impedance is larger, the total amount of transformer leakage flux is large. In order to reduce the stray loss of the transformer and prevent the box cover 1. Local overheating at the bottom of the box can no longer be solved by adding a shorting piece between the outer edge of the upper and lower boxes. Therefore, it is an urgent problem to be solved in this field to study a new method to shield the case cover and the bottom of the case. Contents of the invention [0003] The purpose of the present invention is to provide a new type of shielding method for preventing overheating of a converter transformer. By adding a shielding plate to the lower part of the case cover and the uppe...

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Problems solved by technology

[0002] At present, as the capacity of the transformer becomes larger and the impedance is larger, the total amount of transformer leakage flux is large. In order to reduce the stray loss of the transformer and prevent the box cover 1. Partial overheating at the bottom of the box. At present, it is impossible to solve the problem by adding a shorting piece between the upper and lower box edges.

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