A three-phase five-column high-frequency transformer with ventilation and cooling structure

Abstract

The present invention provides a three-phase five-column high-frequency transformer with ventilation and cooling structure, including: a magnetic core, a winding wound on the magnetic core, a fan for ventilation and cooling, and an auxiliary mechanical structure, the auxiliary mechanical structure includes the above , the lower pressure plate, the side pressure plate and the insulating pads supporting the winding, wherein the upper and lower yokes of the magnetic core are fixed in the same plane by the upper and lower pressure plates, and the side yokes on both sides of the magnetic core are fixed by the side pressure plates to make the core stand upright No offset occurs; the gap between the upper and lower pressure plates and the magnetic core is filled with heat-conducting glue, and a layer of heat-conducting glue is also laid on the contact between the upper and lower pressure plates and the side pressure plate and the magnetic core to ensure good contact and keep the upper and lower magnets The heat of the yoke is conducted to the upper and lower pressing plates and the heat of the side yoke is conducted to the side pressing plates. The invention ventilates and cools the three-phase magnetic core and the side yoke at the same time, and uses the auxiliary structure to enhance the cooling of the upper and lower magnetic yokes, and solves the heat dissipation problem of different heat sources caused by the incomplete symmetry of the three-phase plane structure.

Description

technical field [0001] The invention relates to a large-capacity high-frequency transformer, in particular to a three-phase five-column high-frequency transformer with a ventilation cooling structure. Background technique [0002] Three-phase five-column transformers are generally suitable for dismantling large-capacity power frequency transformers, using wire cake windings and silicon steel sheet magnetic cores, and fans are horizontally ventilated and cooled. The amorphous alloy core of a high-frequency transformer is the main component of the magnetic circuit, and the winding is the main component of the electrical system. The structure and size of the core and winding have an important impact on the performance and cost of the transformer. Both the core and the winding are heat sources. Under the same capacity, the size of the high-frequency transformer is much smaller than that of the traditional power frequency transformer. The performance of the amorphous alloy magne...

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Problems solved by technology

[0004] In view of the defects in the prior art, the object of the present invention is to provide a three-phase five-column high-frequency transformer with a ventilation cooling structure, which simultaneously ventilates and cools the three-phase magnetic core and the side yoke, and utilizes the auxiliary structure to strengthen the The cooling of the upper and lower yokes solves the heat dissipation problem caused by the different heat sources caused by the incomplete three-phase symmetry of the planar structure

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