Oil-immersed transformer with transformer oil convenient to replace

Abstract

The oil-immersed transformer comprises an oil tank, a tank cover, an oil conservator, a metal expander and bolts, an iron core is fixedly installed in the oil tank, the outer side of the iron core is wrapped with a winding, the bottom of the oil tank is fixedly communicated with a funnel, a spiral flow guide plate is installed on the inner side of the funnel, an oil drainage opening is formed in the bottom of the funnel, and the bottom of the oil drainage opening is provided with a spiral flow guide plate. A control valve is installed in the oil drainage port, a low-pressure sleeve is installed on one side of the box cover, and a high-pressure sleeve is installed on the other side of the box cover. According to the oil-immersed transformer convenient to replace the transformer oil, the funnel, the spiral guide plate and the oil drainage port are arranged, the oil drainage port is opened, the transformer oil in the oil tank is discharged through the oil drainage port, at the moment, the spiral guide plate guides the flowing track of the transformer oil, the transformer oil flows in a vortex shape, the transformer oil flowing in the vortex shape wraps sediment accumulated at the bottom of the oil tank, and therefore the oil-immersed transformer is convenient to replace. And the oil tank can be cleaned conveniently when hydraulic oil is discharged, manual cleaning is not needed, and use is more convenient.

Description

technical field [0001] The invention relates to the technical field of oil-immersed transformers, in particular to an oil-immersed transformer that facilitates the replacement of transformer oil. Background technique [0002] The oil-immersed transformer is an important equipment in the power distribution system. The use of the oil-immersed transformer can reduce the current in the high-voltage power grid to the low-voltage current used by users. [0003] Existing oil-immersed transformers are usually not equipped with a complete oil drain structure, which makes it difficult for the transformer oil in the oil tank to be quickly discharged through the oil drain port, and at the same time, it is difficult for the sediment deposited on the bottom of the oil tank to flow out with the transformer oil, resulting in the oil-immersed Type transformers need to be cleaned manually when replacing the transformer oil, which is not practical enough to use, and the heat dissipation pipes ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide an oil-immersed transformer that is easy to replace the transformer oil, so as to solve the problem that the existing oil-immersed transformer proposed in the above-mentioned background technology is usually not equipped with a perfect oil drain structure, and the sediment deposited on the bottom of the oil guide tank It is difficult for the oil-immersed transformer to flow out with the transformer oil, so that the oil-immersed transformer needs to be cleaned manually when replacing the transformer oil, which is not practical enough to use. In addition, the heat dissipation pipe of the existing oil-immersed transformer is usually installed outside the oil tank, and the inside of the oil tank It is difficult for the transformer oil to flow into the heat pipe outside the oil tank, resulting in poor heat dissipation. The existing oil-immersed transformers rely on oil pillows to compensate the transformer oil in the oil tank, but desiccant saturation and oxygen in the air are unavoidable. It will lead to the oxidation of the transformer oil and the increase of moisture, so that the service life of the transformer oil of the existing oil-immersed transformer is not long

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