Dry-type transformer with oval iron cores

Abstract

The invention discloses a dry-type transformer with oval iron cores. The dry-type transformer comprises a transformer shell, a heat dissipation mechanism, the oval iron cores, coils, clamping mechanisms and an upper cover, wherein the heat dissipation mechanism is arranged in a horizontal direction and fixedly assembled with the transformer shell; the end, away from the transformer shell, of the heat dissipation mechanism makes contact with the ground; the oval iron cores are arranged in the transformer shell in the vertical direction; the coils are wound on the oval iron cores; the clamping mechanisms are arranged on the sides, away from the oval iron cores, of the coils in a sleeving mode; the upper cover is arranged at the top end of the transformer shell; and the upper cover and the transformer shell are fixedly assembled through a bolt structure. The iron cores with oval sections are adopted, the three-phase iron cores are arranged in a regular triangle shape and located at the midpoints of triangular edges respectively, and the winding modes of coils close to the iron cores are different; and in addition, the clamping mechanisms are arranged in the dry-type transformer, remedy can be carried out on secondary falling of the coils in a clamping process, and the service life of the dry-type transformer is prolonged.

Description

technical field [0001] The invention relates to the technical field of dry-type transformers, in particular to a dry-type transformer with an elliptical iron core. Background technique [0002] A transformer is a device that uses the principle of electromagnetic induction to change the AC voltage, while a dry-type transformer refers to a transformer in which the iron core and winding are not immersed in insulating oil. Due to its superior characteristics, dry-type transformers are widely used in local lighting, high-rise buildings, airports and other places. Whether the traditional dry-type transformer is single-phase or three-phase, most of them adopt iron cores with circular cross-sections, and they are uniformly arranged in a straight line; It is easy to cause local shedding, and there is a gap between the core and the corresponding existing solutions in the prior art, such as "CN201922156698.7 A dry-type transformer with a coil compression structure", but the clamping d...

AI Technical Summary

Problems solved by technology

Whether the traditional dry-type transformer is single-phase or three-phase, most of them adopt iron cores with circular cross-sections, and they are uniformly arranged in a straight line; It is easy to cause local shedding, and there is a gap between the core and the corresponding existing solutions in the prior art, such as "CN201922156698.7 A dry-type transformer with a coil compression structure", but the clamping device is not fixed Change, after maintaining the clamping effect for a period of time, there is no remedy for the coil falling off again

Images