Oil-immersed transformer

A technology of oil-immersed transformers and transformer cores, applied in the field of transformers, can solve problems such as inter-turn short circuit, insulation aging, interphase short circuit or ground short circuit, and achieve the effects of preventing short circuit, good sealing effect, and improving sealing performance

Active Publication Date: 2017-06-13
JIANGSU YAWEI TRANSFORMER
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  • Abstract
  • Description
  • Claims
  • Application Information

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 insulat

Method used

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] Figure 1 to Figure 6 It schematically shows that an oil-immersed transformer is provided according to an embodiment of the present invention.

[0032] Such as figure 1 As shown, the present invention discloses an oil-immersed transformer, which includes an oil tank 1, and a transformer core is installed in the oil tank 1. At the same time, the oil tank 1 is filled with 110kV high-temperature-resistant insulating oil. In this embodiment of the present invention, the high-temperature-resistant insulating oil It is a β liquid, and silicone oil FR3 natural ester can also be used in practical applications. The transformer core is immersed in high temperature resistant insulating oil. Su...

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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...

Claims

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Application Information

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IPC IPC(8): H01F27/12H01F27/14H01F27/24H01F27/40
CPCH01F27/12H01F27/14H01F27/24H01F27/402H01F2027/404
Inventor 田正稳
Owner JIANGSU YAWEI TRANSFORMER
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