Oil-immersed transformer

Abstract

The invention provides an oil-immersed transformer which comprises an oil tank. The oil tank is full of high-temperature-resisting insulation oil, a transformer core is installed in the oil tank and is immersed in the high-temperature-resisting insulation oil, a tank cover is arranged above the oil tank and is in sealed connection with the oil tank, a plurality of low-voltage sleeves, a plurality of high-voltage sleeves and a tapping switch are arranged on the tank cover, and the low-voltage sleeves, the high-voltage sleeves and the tapping switch are connected with the transformer core. The oil-immersed transformer is characterized in that a cooling oil way is formed in the transformer core, an abrasion-resisting seal part is embedded on the periphery of the tank cover, a press strip is arranged on the end plane of the periphery of the upper portion of the oil tank, and the tank cover is fixedly connected with the oil tank through bolts, so that the seal part on the tank cover is pressed above the press strip. By adopting the technical scheme, heat dissipation and cooling effects are good. In addition, the sealing performance is improved, the dangers of combustion and explosion caused by high-temperature-resisting insulation oil leakage can be prevented, and meanwhile the short circuit phenomenon caused by the fact that water vapor and dust enter the oil tank can be prevented.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an oil-immersed transformer that improves heat dissipation, improves the airtightness of an oil tank, and simultaneously monitors the oil level in the oil tank in real time without preventing inter-turn short circuits. Background technique [0002] Transformer is a device that uses the principle of electromagnetic induction to change AC voltage. Its main functions are: voltage conversion, current conversion, impedance conversion, isolation, voltage stabilization, etc. Transformer is an important equipment in power generation, power supply and power consumption enterprises. It is also in a very critical position in the power grid. It is an important device to ensure the safe and reliable operation of the power grid and the electrodes used by people in production and life. [0003] Oil-immersed transformers are suitable for power systems, industrial and mining enterprises, tra...

AI Technical Summary

Problems solved by technology

[0008] In addition to the long-term overload operation of the above-mentioned transformer, the coil heating will gradually age the insulation, which may easily cause inter-turn short circuit, phase-to-phase short circuit or short circuit to ground. Turn-to-turn short circuit

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