Air cooling structure of transformer

Abstract

The invention relates to an air cooling structure of a transformer, comprising an air cooling fan. The cooling fan is arranged on the transformer. The air cooling structure of the transformer is characterized in that an air passage is arranged on the bottom of a close-to-wall side of the transformer, and the air passage is provided with an air passage air-inlet and an air passage air-outlet; the cooling fan is arranged on a non-close-to-wall side of the transformer, the air passage air-inlet of the air passage is communicated with an air outlet of the cooling fan, and the air passage air-outlet of the air passage is toward a conductive winding at the close-to-wall side of the transformer. Because the cooling fan is arranged on the non-close-to-wall side of the transformer winding, and the air passage is arranged at the bottom of the close-to-wall side of the transformer winding, the side where the air passage is located is arranged close to the wall body when the transformer is arranged close to the wall body and other fixed buildings, and the air passage can be detached for maintaining or replacing on the non-close-to-wall side after the fan is damaged. Because the invention has the characteristics, the air cooling structure of the transformer can be applied to a transformer product with narrow mounting space.

Description

technical field [0001] The invention relates to a cooling structure of a transformer, in particular to an air-cooling structure of a dry-type transformer. Background technique [0002] At present, high-power dry-type transformers include dry-type voltage regulators, dry-type phase-shifting transformers and other transformer products. Due to their flexible use and other characteristics, they have been widely used in occasions that require power energy transmission, voltage regulation or phase shifting. application. For high-power transformers, cooling is generally required, and conventional cooling methods include oil-invasion cooling, natural cooling, and air-cooling. For air-cooled transformers, the prior art, such as Chinese patent ZL200920062793.4, discloses the structure of setting air deflectors in the transformer cabinet, so as to form air guide channels in the cabinet and guide the cooling air entering from the bottom of the cabinet to The gap between the transforme...

AI Technical Summary

Problems solved by technology

For air-cooled transformers, the prior art, such as Chinese patent ZL200920062793.4, discloses the structure of setting air deflectors in the transformer cabinet, so as to form air guide channels in the cabinet and guide the cooling air entering from the bottom of the cabinet to The gap between the transformer and the winding; the cooling structure of this kind of structure is provided with a relatively closed cabinet around the transformer, which is a better cooling method, but obviously the structure is more complicated, especially in the daily maintenance of the transformer and inspection is not particularly convenient

Secondly, Chinese patent ZL200920234740.6 also discloses a structure in which the cooling fan is placed under the transformer iron core. The cooling air of this structure can form a better cooling effect on the bottom of the transformer, but for the side of the transformer, or It is said that the cooling effect on the side part where the central winding of the transformer is most concentrated is relatively poor.

Images