H-shaped iron core transformer

Abstract

The invention discloses a dry type transformer structure which comprises a transformer iron core (6) and a compression device for output terminals (9) of flexible aluminum busbars (7). The transformer iron core (6) is formed by deflection and staggered overlapping of a plurality of groups of asymmetric H-shaped silicon steel sheets, each group uses two H-shaped silicon steel sheets with unilateral widening to clamp one aluminum sheet (5) with the same thickness, natural wind channels are formed on the end surfaces for heat radiation, all the groups of the silicon steel sheets are connected and compressed into a whole by using bolts (4), and arc-shaped narrow strips are formed on four corners of the iron core as current-limiting grooves for reducing eddy current loss; and the equidistant flexible aluminum busbars (7) or the end parts of the flexible aluminum busbars (10) are inserted into the aluminum output terminals (9) and further compressed and linked by the bolts (8) by utilizing elastic deformation of L-shaped grooves. The dry type transformer structure can be made into different capacity levels, save iron and save copper.

Description

technical field [0001] The invention relates to a dry-type transformer structure, especially the transformer iron core, which can be made into series with different capacity levels; the invention also relates to an output terminal pressing device. Background technique [0002] As a product of the electronic power industry, transformers have gone through a long development stage, and their mature theories and basic structures have hardly changed. Taking the core structure of small transformers as an example, there are one-shaped, mountain-shaped, Japanese-shaped, and F-shaped. In some In low-voltage and high-current applications, due to difficult application bottlenecks such as heat dissipation and winding connection, for example, the existing steel bar butt welding machines are all water-cooled, and the manufacturing process is complicated and inconvenient to use. Therefore, technological breakthroughs in the structure of transformers are worth looking forward to. Contents...

AI Technical Summary

Problems solved by technology

[0002] As a product of the electronic power industry, transformers have gone through a long development stage, and their mature theories and basic structures have hardly changed. Taking the core structure of small transformers as an example, there are one-shaped, mountain-shaped, Japanese-shaped, and F-shaped. In some In low-voltage and high-current applications, due to difficult application bottlenecks such as heat dissipation and winding connection, for example, the existing steel bar butt welding machines are all water-cooled, the manufacturing process is complicated, and it is inconvenient to use

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