一种环氧浇注干式变压器散热结构及其制作工艺

By incorporating spiral guide grooves and expansion sections into epoxy-cast dry-type transformers, combined with a high thermal conductivity insulating coating, and utilizing the Venturi effect and vortex effect, the problems of low airflow organization efficiency and high wall heat transfer resistance in existing epoxy-cast dry-type transformers are solved. This achieves orderly airflow organization and directional heat transfer, thereby improving heat dissipation efficiency.

CN122417623APending Publication Date: 2026-07-17江苏强森电气有限公司

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
江苏强森电气有限公司
Filing Date
2026-06-17
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing annular air duct heat dissipation structure of epoxy cast dry transformers has problems such as low airflow organization efficiency, low air velocity and high wall heat exchange thermal resistance, which cannot achieve active airflow organization and directional heat transfer.

Method used

A spiral flow channel is formed by setting a spiral flow guide groove on the outside of the second epoxy insulation layer and setting an expansion section and a contraction section on the inside of the first epoxy insulation layer, combined with a high thermal conductivity insulation coating. The Venturi effect and swirling effect are used to improve the airflow velocity and heat exchange efficiency.

Benefits of technology

It achieves orderly airflow organization and directional heat transfer, improves heat dissipation efficiency, and solves the problems of low airflow organization efficiency and heat accumulation in dead zones in traditional structures.

✦ Generated by Eureka AI based on patent content.

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Abstract

本发明涉及干式变压器技术领域,涉及一种环氧浇注干式变压器散热结构及其制作工艺,该结构包括同轴嵌套的高压绕组、低压绕组、第一环氧绝缘层和第二环氧绝缘层,第一环氧绝缘层和第二环氧绝缘层径向间隙构造环形散热气道,第二绝缘层外侧设有螺旋导流槽,第一绝缘层内侧设有由第一扩张段、收缩段和第二扩张段构成的文丘里式流道;其工艺通过真空浇注并利用模筒轴向拉出与螺旋膜筒旋转抽出成型;本申请通过螺旋导流与文丘里加速耦合产生的复合流场,有效延长换热行程并提高气流速度,通过离心力破坏壁面层流底层,大幅减小换热热阻,解决了传统气道组织效率低的问题,显著提升了变压器热稳定性。
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