Gap-butt amorphous single core with noise reduction function of epoxy coating and with approximate-circle cross-section

Abstract

The invention relates to a gap-butt amorphous single core with noise reduction function of epoxy coating and with an approximate-circle cross-section. The gap-butt amorphous single core is formed by packing a plurality of amorphous core plates in sequence; the epoxy coating is coated at least on part of the area of the front end surface and the back end surface of the gap-butt amorphous single core; the amorphous core plates are divided into a plurality of butt groups with different lengths, the two ends of one butt group are butted with each other, a micro seam with equivalent width inside and outside is kept at the butt position, and the micro seams of different butt groups are positioned at a distance along the tangential direction of the core; the amorphous core plates have different widths; the amorphous core plates in the middle of a core limb are wider than the amorphous core plates at the two sides of the core limb; the amorphous core plates are divided into a plurality of equivalent width groups, and the widths of the amorphous core plates in one equivalent width group are same. The gap-butt amorphous single core of the invention has good effect of magnetic conduction, is beneficial to saving the usage of copper in a coil, prevents the insulating materials of the coil from being damaged by extrusive corner angles, reduces the noise and is mainly used in various amorphous transformers.

Description

technical field [0001] The invention relates to an epoxy resin noise-reducing butt joint type amorphous single core with an approximate circular cross-section, which belongs to the field of electrical technology. technical background [0002] The amorphous iron core is stacked together by several layers of amorphous iron core sheets to form a closed electromagnetic field circuit, which is used to transmit magnetic flux on transformers and other equipment. Coils are placed on the iron core columns on both sides of the iron core. Variable magnetic field, the magnetic flux of this magnetic field is transmitted to another coil through the iron core to form an induced current, thereby realizing the function of energy transfer and voltage transformation. At present, the width of each layer of amorphous iron core in the amorphous iron core is the same. The cross-section thus formed is rectangular, and the annular coil sleeved on the iron core column should also be rectangular, so a...

AI Technical Summary

Problems solved by technology

If the two ends are directly butted at the joint, the iron core at the joint is interrupted, which will generate a large magnetic resistance and affect the transmission of magnetic flux. Therefore, it is necessary to improve the rectangular joint structure.

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