An oil-immersed transformer

Abstract

The invention provides an oil-immersed transformer comprising a box body and a cover body, wherein a mounting interlayer and a sealing ring are arranged between the box body and the cover body, a mounting plate is arranged at the bottom of the mounting interlayer, a transformer coil is fixedly connected to the mounting plate, oil discharge openings are uniformly formed in a side wall of the mounting interlayer, first bolt holes and second bolt holes are correspondingly formed in the cover body, the sealing ring, the mounting interlayer and the box body, the cover body, the sealing ring and the mounting interlayer are connected via the first bolt holes, the cover body, the sealing ring, the mounting interlayer and the box body are connected via the second bolt holes, when the transformer is faulty, the bolts on the second bolt holes are detached to lift out the cover body, the sealing ring and the mounting interlayer for maintenance, when the mounting interlayer is lift out, the original transformer oil in the mounting interlayer flows back into the box body of the transformer through the oil discharge openings, the transformer oil does not need to be discharged in advance, thereby simplifying the troublesome maintenance steps of the original transformer, improving the working efficiency and reducing the manpower cost.

Description

technical field [0001] The invention belongs to the technical field of power equipment, and in particular relates to an oil-immersed transformer. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. There are various types of transformers, mainly divided into: power transformers, oil-immersed transformers, dry-type transformers, etc. Oil-immersed transformers are used in power supply and distribution systems for industrial and mining enterprises and civil buildings. One of the important equipment of the oil-immersed transformer, the body (coil and iron core) of the oil-immersed transformer is installed in the oil tank filled with transformer oil, and the oil tank is welded with steel plates. The body of the transformer is placed in the box shell. Since the transformer is full of transformer oil, once the transformer fails, the transformer oil must be drained from the bottom of the transformer oil tan...

AI Technical Summary

Problems solved by technology

[0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. There are various types of transformers, mainly divided into: power transformers, oil-immersed transformers, dry-type transformers, etc. Oil-immersed transformers are used in power supply and distribution systems for industrial and mining enterprises and civil buildings. One of the most important equipment, the body (coil and iron core) of the oil-immersed transformer is installed in the oil tank filled with transformer oil, and the oil tank is welded with steel plates. Since the transformer is full of transformer oil, once the transformer fails, the transformer oil must be drained from the bottom of the transformer oil tank first, and then the transformer coil is taken out of the transformer oil tank for maintenance, not only the steps are cumbersome , and the transformer oil is easily oxidized by the air after it is discharged, and the insulation is reduced, and it will cause a great safety hazard after re-entering the inside of the transformer. Therefore, an oil-immersed transformer is urgently needed. After the oil is discharged, the transformer coil and iron core can be taken out for maintenance

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