Oil-immersed power transformer

Abstract

The invention discloses an oil-immersed power transformer which structurally comprises an oil tank, a heat dissipation device, corrugated cooling fins, a high-voltage terminal, a low-voltage terminal,an oil pipe, an oil conservator and a supporting frame, the top of the oil tank is mechanically connected with the supporting frame, the oil conservator is installed on the supporting frame, and theoil conservator is communicated with the oil tank through the oil pipe. Compared with the prior art, the power transformer has the beneficial effects that the heat dissipation pipe communicated with the oil tank is additionally arranged outside the oil tank, direct contact between oil and the heat dissipation pipe is achieved, heat dissipation of the oil is facilitated, the U-shaped cooling fins of different specifications are arranged outside the heat dissipation pipe body to be wavy, air circulation is facilitated, the heat dissipation efficiency can be further improved, a piston block, a measuring tape, a corrugated pipe and other components are additionally arranged in the heat dissipation pipe, oil can be pushed into the oil tank to reduce oil heat, rapid heat dissipation of transformer oil can be achieved, the piston block can prevent transformer oil residues from adhering to the interior of the heat dissipation pipe while pushing the oil, and therefore it can be avoided that a channel in the inner wall of the heat dissipation pipe becomes small, oil flux is reduced, and oil heat dissipation is affected.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an oil-immersed power transformer. Background technique [0002] Transformer oil has a much higher dielectric strength than air. The insulation material soaked in oil can not only improve the insulation strength, but also prevent the erosion of moisture. In the transformer, in order to strengthen the insulation and cooling conditions, the iron core of the transformer and The windings are all immersed in the oil tank filled with transformer oil. The transformer is usually equipped with an oil conservator. When the transformer oil heats up, the oil flows from the oil tank to the oil conservator. When the transformer oil cools, the oil flows from the oil conservator to the oil tank. The oil-immersed transformer is directly equipped with a heat sink outside the oil tank, so that the heat sink is in contact with the oil tank, and the transformer oil in the oil tank achieves the h...

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Problems solved by technology

[0002] Transformer oil has a much higher dielectric strength than air. The insulation material soaked in oil can not only improve the insulation strength, but also prevent the erosion of moisture. In the transformer, in order to strengthen the insulation and cooling conditions, the iron core of the transformer and The windings are all immersed in the oil tank filled with transformer oil. The transformer is usually equipped with an oil conservator. When the transformer oil heats up, the oil flows from the oil tank to the oil conservator. When the transformer oil cools, the oil flows from the oil conservator to the oil tank. The oil-immersed transformer is directly equipped with a heat sink outside the oil tank, so that the heat sink is in contact with the oil tank, and the transformer oil in the oil tank achieves the heat dissipation of the transformer oil through the heat dissipation of the oil tank, which will lead to low heat dissipation efficiency and cannot be quickly Dissipate heat from transformer oil

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