Supporting structure for body of epoxy cast dry-type transformer

Abstract

The invention discloses a supporting structure for a body of an epoxy cast dry-type transformer. The structure comprises a trolley foot, a supporting seat, supporting feet and a bottom foot insulator. The supporting seat and the supporting feet are arranged on the trolley foot, and the supporting feet are located on the outer side of the supporting seat. The bottom foot insulator is flatly laid on the upper surface of the supporting seat, and positioning pin shafts are arranged among the trolley foot, the supporting seat and the bottom foot insulator. The supporting feet are formed by welding box iron, and the supporting seat is formed by bending a steel plate, adding a sealing plate and welding the sealing plate. According to the supporting structure, the ground clearance of the body of the transformer can be adjusted, it is ensured that the enough air amount exists between the body and the ground surface, and temperature rising is reduced; meanwhile, the length of an outlet copper bar is reduced, and cost is saved.

Description

technical field [0001] The invention belongs to the field of transformer manufacturing and relates to a support structure for an epoxy cast dry-type transformer body. Background technique [0002] The foot support structure of traditional epoxy resin dry-type transformers is as follows: Figure 1 to Figure 3 shown. A bottom foot insulation 12 is placed on the trolley foot 11, and support sleeves 13 are placed at both ends of the bottom foot insulation. After the assembly of the dry transformer body is completed, the lower end surfaces of the lower clip 14 and the body 15 bear weight respectively on the support sleeve and the insulation of the foot, and are fastened with bolts to complete the assembly. This structure has been used in the circular coil structure, the structure is simple, and the assembly is convenient. [0003] However, in recent years, the structural form of the transformer coil is developing towards an oblong shape. With the gradual reduction of the diamet...

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Problems solved by technology

[0003] However, in recent years, the structural form of the transformer coil is developing towards an oblong shape. With the gradual reduction of the diameter of the iron core, the distance from the ground of the transformer body is also reduced.

This brings about several problems: because the distance between the transformer body and the ground is reduced, the straight-line distance for installing the cooling fan is not enough, which seriously affects the assembly of the fan; the distance from the ground is too small, and the total amount of air required for transformer cooling Affected, the air flow is not smooth, which increases the temperature rise of the transformer; the height of the body is reduced, and the length of the outgoing copper bar on the transformer must be increased, which increases the cost and causes customer dissatisfaction

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