Iron core assembly of dry-type transformer

Abstract

The invention discloses an iron core assembly of a dry-type transformer. The iron core assembly comprises iron cores, an upper clamping plate and a lower clamping plate, wherein the iron cores are fixed between the upper clamping plate and the lower clamping plate by an upper iron yoke and a lower iron yoke, the two sides of the upper clamping plate are connected by screw rods, a grounding sheet is arranged on the upper clamping plate, foot pads are arranged at the bottom of the lower clamping plate, pull plates are arranged in gaps between the upper / lower iron yokes and the upper / lower clamping plates, the upper parts of the pull plates are detachably connected with the upper clamping plate by pull plate shafts, the lower parts of the pull plates are welded with the lower clamping plate, pull plate inner insulators are arranged on surfaces, opposite to the upper iron yoke and the lower iron yoke, of the pull plates, and foot pad insulators are arranged between the lower clamping plate and the foot pads. The upper / lower iron yokes and the upper / lower clamping plates are insulated by the pull plates, and the iron core assembly has the advantages of simplicity in structure, relatively low material consumption and favorable insulation performance; and moreover, since the cooling areas of the pull plates are large, the temperature of a transformer is difficult to rise, and the iron core assembly has relatively good safety performance.

Description

technical field [0001] The invention relates to a dry-type transformer, in particular to a dry-type transformer core assembly. Background technique [0002] Dry-type transformers are widely used in smelting, glass products and other industries. They are usually placed in an electrical cabinet with other components, which contains many electronic components, and electronic components have high requirements for ambient temperature. The current dry-type transformer iron core mainly has a U-shaped iron core with a pair of legs arranged at both ends of the connecting part, or a structure in which the middle leg and the outer legs symmetrically arranged on both sides are connected through the connecting part, but the assembly structure of the iron core The insulation performance is not good, and the consumables are large and the temperature is high. Putting them together with electronic components is prone to safety accidents. Contents of the invention [0003] The technical pr...

AI Technical Summary

Problems solved by technology

The current dry-type transformer iron core mainly has a U-shaped iron core with a pair of legs arranged at both ends of the connecting part, or a structure in which the middle leg and the outer legs symmetrically arranged on both sides are connected through the connecting part, but the assembly structure of the iron core The insulation performance is not good, and the consumables are large and the temperature is high. Putting them together with electronic components is prone to safety accidents

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