Epoxy resin cast dry-type transformer with internal side circulation cooling

A technology of dry-type transformers and epoxy casting, which is applied in the field of transformers and can solve problems such as unbalanced cooling and heat dissipation, unbalanced internal and external heat, and poor ventilation, so as to achieve the effects of improving heat dissipation performance, heat dissipation rate, and heat dissipation effect

Inactive Publication Date: 2017-08-18
江苏凡高电气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the technical solution disclosed in this invention patent still has the following disadvantages: the side-blowing fan at the bottom of the transformer blows air towards the center of the transformer respectively, therefore, when the three transformers are turned on for cooling at the same time, wind will be generated at the center of the transformer Because of the wind blowing from three directions at the same time, it is easy to cause poor ventilation. Therefore, the use of this cooling structure will cause serious internal and external heat imbalance problems due to unbalanced cooling and heat dissipation.
However, this technical solution is only applicable to oil-immersed transformers and cannot be applied to dry-type transformers

Method used

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  • Epoxy resin cast dry-type transformer with internal side circulation cooling
  • Epoxy resin cast dry-type transformer with internal side circulation cooling
  • Epoxy resin cast dry-type transformer with internal side circulation cooling

Examples

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Embodiment 1

[0029] Figure 1 to Figure 3 It schematically shows that an epoxy cast dry-type transformer with internal circulation cooling is provided according to the first embodiment of the present invention.

[0030] Such as figure 1 As shown, the present invention discloses an epoxy casting dry-type transformer with internal circulating cooling, which includes a transformer body 20, and the transformer body 20 includes a transformer skeleton 1, an iron core body 2 sandwiched in the transformer skeleton 1 and a core body wound around the iron core Coil winding 3 outside the body 2 .

[0031] Such as figure 1 As shown, the transformer skeleton 1 includes an upper clamp 101 and a lower clamp 102. The surfaces of the upper clamp 101 and the lower clamp 102 are coated with a corrosion protection layer, and the upper clamp 101 and the lower clamp 102 are treated with corrosion and scale inhibition. .

[0032] Such as figure 1 As shown, the iron core body 2 includes three vertically arra...

Embodiment 2

[0042] figure 1 , figure 2 and Figure 4 It schematically shows that an epoxy cast dry-type transformer with internal circulation cooling is provided according to the second embodiment of the present invention.

[0043] Such as figure 1 with figure 2 As shown, the present invention provides that the structure of an epoxy cast dry-type transformer with internal circulation cooling provided in this embodiment is basically the same as that in Embodiment 1, the difference lies in the structure of the cooling pipe 402 .

[0044] Such as Figure 4 As shown, as a preference, in this embodiment of the present invention, several annular coil heat dissipation air passages 32 for heat dissipation are also arranged in the coil winding 3, such as image 3 As shown, the heat dissipation air duct 32 is arranged axially along the coil winding 3 , is located between the coils, and is enclosed in the coil winding 3 . Such as image 3 As shown, the cooling pipe 402 is located in one of ...

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Abstract

The invention provides an epoxy resin cast dry-type transformer with internal side circulation cooling. The epoxy resin cast dry-type transformer with internal side circulation cooling comprises a transformer body; the transformer body comprises a transformer bobbin, an iron core disposed inside the transformer bobbin and a three-phase coil winding disposed outside the iron core; the three-phase coil winding is covered with a housing; a cooling liquid box is disposed beside the transformer body; cooling tubes are distributed among internal coils of the three-phase coil winding; and the cooling tubes communicate with the cooling liquid box. According to the epoxy resin cast dry-type transformer with internal side circulation cooling provided by the invention, the cooling tubes are disposed inside the coil winding and the circulating flow of the cooling liquid in the cooling liquid box and the cooling tubes via the lift pump is realized, so that the heat inside the coil winding is taken away and the heat dissipation efficiency is improved; additionally, according to the epoxy resin cast dry-type transformer with internal side circulation cooling provided by the invention, the heat dissipation efficiency is further improved by adopting a combined way of air-cooling and circulating water cooling.

Description

technical field [0001] The invention relates to the technical field of transformers, in particular to an epoxy cast dry-type transformer with internal circulation cooling for improved heat dissipation. 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] Dry-type transformers are widely used in local lighting, high-rise buildings, airports, wharf CNC mechanical equipment and other places. Simply put, dry-type transformers refer to transformers whose iron core and wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/08H01F27/12H01F27/14H01F27/16H01F27/22H01F27/28
CPCH01F27/085H01F27/12H01F27/14H01F27/16H01F27/22H01F27/2876
Inventor 朱万盛钱蓉蓉管生立
Owner 江苏凡高电气有限公司
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