A power transformer for voltage conversion output

Abstract

The invention provides a power transformer for voltage conversion output, which relates to the technical field of welding machine transformers, and solves the problem that the disassembly and assembly efficiency of the cover cannot be improved through structural improvement under the condition of ensuring sealing; the wiring seat structure does not have automatic The locking function can easily cause the cable to fall off when the cable is unintentionally dragged. A power transformer for voltage conversion output includes a box body; a roller structure is installed on the box body, a heat dissipation structure is installed in the box body, and a cover plate is fixed on the box body. Because the cover plate is a cover-shaped structure, and a groove is opened at the back of the bottom end face of the cover plate; the groove is a semi-circular groove-shaped structure, and the groove constitutes the rainwater interception structure of the cover plate, which can prevent the rainwater from passing through the bottom of the cover plate. The end face slides into the inside of the box to cause a short circuit.

Description

technical field [0001] The invention belongs to the technical field of welding machine transformers, and more particularly, particularly relates to a power transformer used for voltage conversion output. Background technique [0002] At present, due to historical reasons in many African countries, two voltage levels of 10kV and 6.6KV are used in the public power distribution system as the main distribution voltage. Therefore, the output voltages of the intermediate transformers are 10kV and 6.6KV. In order to save costs, It is necessary to design two voltages to meet the low-voltage output of 10kV and 6.6KV. The welding machine transformer is a kind of power transformer with voltage conversion output. [0003] For example, application number: CN200710133191.9, the present invention relates to an arc welding machine transformer, which is characterized in that the secondary coil package is installed up and down the neutral row, and the primary coil package and the primary coil...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned technical problems, the present invention provides a power transformer for voltage conversion and output to solve the existing problem that most of the cover plates of the existing devices are fixed by multiple bolts, and it is not convenient to disassemble and maintain. It is impossible to improve the disassembly and assembly efficiency of the cover plate under the condition of ensuring the sealing through structural improvement; moreover, the terminal block structure of the existing device does not have an automatic locking function, and the cable wire is likely to fall off due to unintentional dragging of the cable wire; Finally, although the existing device can achieve buffering and shock absorption by setting springs on the universal wheels, it cannot realize the problem of heat dissipation of the internal components of the box on the basis of shock absorption.

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