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Five-stage equal-length three-dimensional triangular opening rolled iron core

A triangular, rolled iron core technology, applied in the direction of transformer/inductor cores, etc., can solve the problems of partial utilization, increased material costs, material waste, etc., to save equipment investment costs, reduce processing costs, and reduce shelving rates Effect

Inactive Publication Date: 2018-01-05
黄石市金雀电气股份有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this form of material cutting can theoretically make the material utilization rate of the coiled iron core close to 100%, it brings great inconvenience to the slitting and blanking, and will produce a lot of surplus material in actual production. This part of the surplus material may be If it needs to be shelved for a long time, it may only be partially utilized, which will increase unnecessary material costs and even cause some materials to be wasted

Method used

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  • Five-stage equal-length three-dimensional triangular opening rolled iron core
  • Five-stage equal-length three-dimensional triangular opening rolled iron core
  • Five-stage equal-length three-dimensional triangular opening rolled iron core

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Embodiment Construction

[0019] like figure 1 , figure 2 and image 3 As shown, the five-level equal-length three-dimensional triangular open wound iron core includes three identical single frames 9, and each single frame 9 is provided with a grounding piece. In order to enable the material strip to achieve a stable and shaped structure after being bent, the single frame 9 is provided with a 45° chamfer at the bending position. Each single frame 9 is provided with an opening on the core column or the upper iron yoke, and the material strips forming the single frame are processed into a U-shape or a closed rectangle on a special coiled iron core shearing and folding equipment. The single frame 9 is assembled on the silicon steel sheet chip table, and is bound and fixed with a binding tape after the assembly is completed. The assembled three single frames are then assembled in a special fixture, and the core columns of the two adjacent single frames are fixed with binding tapes. During the assembly...

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Abstract

The invention relates to a five-stage equal-length three-dimensional triangular opening rolled iron core. The five-stage equal-length three-dimensional triangular opening rolled iron core comprises three same single frames; 45-degree chamfers are formed in the four corners of each single frame; each single frame comprises five-stage overlaid material bands; the angles corresponding to the materialbands in each stage in the cross section of each single frame are as follows: <alpha>0 is 10 degrees; <alpha>1 is 20 degrees; <alpha>9 is 8 degrees; <alpha>8 is 18.3737 degrees; and the thickness from the second stage of the material band to the seventh stage of the material band is decreased gradually. The second stage of the material band to the seventh stage of the material band are equal in lengths, and the sum of the half of the lengths of the first stage of the material band and the fifth stage of the material band is basically close to the average length of the second stage of the material band to the seventh stage of the material band; in addition, the spliced width of two fifth stage of the material band is equal to the width of the first stage of the material band; by virtue ofthe jacking cutting mode, the material shelving rate is lowered, and high material utilization rate is realized; meanwhile, the longitudinal cutting process is simplified, labor hour is saved, and processing cost is lowered; and in addition, the material band is stable in structure after bending and shaping, without needing annealing treatment, so that equipment investment cost of enterprises is lowered.

Description

technical field [0001] The invention relates to the field of transformer transformer manufacturing, in particular to a five-level equal-length three-dimensional triangular open wound iron core. Background technique [0002] The three-dimensional wound iron core is completely symmetrical in space, and it is easier to ensure various electromagnetic parameters than the three-phase three-column laminated iron core. This iron core has the characteristics of material saving and energy saving, three-phase magnetic circuit symmetry, small excitation current, low no-load loss, low harmonics and low noise. [0003] With the improvement of the performance requirements of distribution transformer products by the State Grid, especially the requirements for no-load loss performance of transformers are getting higher and higher. For the method of reducing the no-load loss of distribution transformers, it is difficult to use the traditional plane laminated iron core process, but the triang...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/26H01F27/25
Inventor 金敏
Owner 黄石市金雀电气股份有限公司
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