Explosion-proof isolation transformer

Abstract

The invention provides an explosion-proof isolation transformer. The transformer comprises a shell, a skeleton, a primary coil, a secondary coil, an insulating oil duct, an oil guide duct, a filter tube and an end cover. A new filter pipe can be regularly installed for replacement according to the actual operation condition. If mechanical impurities exist in the transformer oil, the mechanical impurities can be timely replaced and discharged along with the filter pipe. Moreover, the filter pipe can be taken out for observing the condition of the transformer oil in the filter pipe, so as to judge whether dark color, poor transparency, fluorescence disappearance, scorch odor and the like exist or not; therefore, the operation state of the transformer oil in the isolation transformer can be timely and conveniently obtained, so that the whole transformer oil can be conveniently replaced or the transformer can be conveniently overhauled; therefore, the states of the transformer and the transformer oil can be timely obtained, and the impurities in the transformer oil can be timely removed, thereby improving the explosion-proof performance of the isolation transformer.

Description

technical field [0001] The invention belongs to the technical field of transformers, in particular to an explosion-proof isolation transformer. Background technique [0002] The isolation transformer is a transformer with electrical isolation between the input winding and the output winding. The isolation transformer is used to avoid accidental contact with the charged body at the same time. The isolation of the transformer is to isolate the current of the primary and secondary winding coils. Higher performance. [0003] In order to improve its high-voltage strength requirements, the current conventional choice is to fill transformer oil to improve the withstand voltage of the isolation transformer. Transformer oil is a fractionation product of petroleum. Its main components are compounds such as alkanes, naphthenic saturated hydrocarbons, and aromatic unsaturated hydrocarbons. It has the characteristics of high insulation and remarkable heat dissipation. However, in use, ...

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Problems solved by technology

However, in use, when the transformer is faulty, the color of the oil will also change. Generally, it is not suitable to use the transformer oil when it is light brown.

Moreover, after the transformer oil ages, it is easy to produce brown-black deposits, and the cleaning is time-consuming and laborious. Especially in the prior art, in order to save the usage of transformer oil, multiple sets of insulating layers are installed in the oil tank body. The insulating layers lead to redundant internal structures, and there are many A gas space, not easy to dissipate heat and clean up, and the performance of transformer oil plays a key role in the explosion-proof performance of the isolation transformer.

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