Resin casting dry-type distribution transformer and preparation method thereof

A distribution transformer, resin casting technology, applied in the direction of transformer/inductor cooling, transformer/inductor parts, transformer/inductor coil/winding/connection, etc., can solve the problem of poor heat dissipation, slow speed, dry distribution To solve problems such as unstable operation of electric transformers, to achieve good heat dissipation effect, avoid delamination, and good fixing effect

Active Publication Date: 2021-08-13
ZHENJIANG TIANLI TRANSFORMER
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a cast resin dry-type distribution transformer and its preparation method to solve the problem that the present resin cast dry-type distribution transformer in the above background technology mainly relies on cooling fans and metal cooling fins. The structure makes the heat dissipation effect poor and the speed is slow. Dry-type distribution transformers in this state for a long time are prone to unstable operation.

Method used

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  • Resin casting dry-type distribution transformer and preparation method thereof
  • Resin casting dry-type distribution transformer and preparation method thereof
  • Resin casting dry-type distribution transformer and preparation method thereof

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Example Embodiment

[0033] Example 1:

[0034] like Figure 1-7 As shown, the present invention provides a technical solution: a resin cast dry-type distribution transformer, including a box body 1, a cooling chamber 9 and a working chamber 14 are provided in the box body 1, and two sets of cooling chambers 9 are provided, and the cooling The cavity 9 is arranged on both sides of the working cavity 14, and the box body 1 is provided with an external heat dissipation structure 2 at the position of the cooling cavity 9, and the bottom end of the box body 1 is provided with a bottom cooling box body 3, and the bottom end of the bottom cooling box body 3 Two sets of mounting bases 4 are installed, an iron core 18 is arranged in the working chamber 14, and a coil group 20 formed by resin casting is arranged on the iron core 18, and a low-voltage outlet terminal 7 and a high-voltage outlet terminal 8 are installed on the top of the box body 1. The outlet terminal 7 and the high voltage outlet terminal 8

Example Embodiment

[0043] Example 2:

[0044] A method for preparing a resin cast dry-type distribution transformer, comprising the following steps:

[0045] S1. Making the mixed main material: Grind the silicon micropowder into 400 mesh, 500 mesh, and 600 mesh, dry the silicon micropowder and the coil at the same time, pour the dried silicon micropowder into the mixing kettle, and then pour it into the mixing kettle Add epoxy resin, mix epoxy resin and silicon micropowder evenly, then heat up to 75-82°C, and vacuumize at the same time, the vacuum degree is -0.08-0.1MPa, to obtain the mixed main material;

[0046] S2. Making pouring liquid: Add curing agent, flame retardant, and plasticizer to the mixed main ingredients, mix and stir for 40-90 minutes, heat while stirring, so that the temperature rises to 85-91°C, and Heating under vacuum for 200-300 minutes, the vacuum degree is -0.08-0.1MPa to prepare pouring liquid;

[0047] S3. Curing treatment: Put the coil into the mold, after adjusting the

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Abstract

The invention discloses a resin casting dry-type distribution transformer and a preparation method thereof. The resin casting dry-type distribution transformer comprises a box body, two cooling cavities and a working cavity are formed in the box body, the cooling cavities are arranged on the two sides of the working cavity, and external heat dissipation structures are arranged at the positions, located in the cooling cavities, of the box body; a bottom heat dissipation box body is arranged at the bottom end of the box body, two sets of installation bases are installed at the bottom end of the bottom heat dissipation box body, an iron core is arranged in the working cavity, and a cooling box is arranged at the position, located on one side of the low-voltage wire outlet end and the high-voltage wire outlet end, of the top end of the box body. The external heat dissipation structures controlled by the temperature sensors are arranged on the two sides of the box body, the bottom heat dissipation box body with the multiple sets of heat dissipation fans is arranged at the bottom of the box body, in the using process, primary heat dissipation is conducted through the heat dissipation fans, and when the temperature is too high, the heat dissipation speed and efficiency are improved through the external heat dissipation structures; the whole distribution transformer is good in heat dissipation effect, and meanwhile stable operation of the distribution transformer is guaranteed.

Description

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Claims

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Application Information

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Owner ZHENJIANG TIANLI TRANSFORMER
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