Method for completely mitering and stacking dry type transformer core

A technology of dry-type transformers and oblique joints, which is applied in the field of transformer manufacturing, can solve the problems of difficult stacking and complicated stacking procedures of iron cores, and achieve the effect of improving the quality of finished products

Inactive Publication Date: 2019-06-14
ZHONGBIAN GRP SHANGHAI TRANSFORMER CO LTD
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  • Abstract
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Problems solved by technology

The cross-sectional shape of the iron core column of the transformer has a rectangular shape, a multi-step stepped shape with a circular circumscribed circle, etc. The more the number of multi-step steps, the closer the cross-section is to a circle, but the more difficult it is to stack
The core stacking process of dry-type transformers is complicated, and it is necessary to design an effective and accurate stacking method to improve the stacking quality

Method used

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  • Method for completely mitering and stacking dry type transformer core

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Embodiment Construction

[0019] The present invention will be further described below in conjunction with accompanying drawing.

[0020] see figure 1 , the dry-type transformer iron core fully oblique seam stacking method of the present invention comprises the following steps:

[0021] Step S1, carry out multiple laminations of the first level: two pieces and one stack, after the first lamination, use a level to measure its flatness, if it is not flat, adjust it until it is level, and then use a tape measure to measure the iron core The diagonals of the two windows should make the lengths of the four diagonals exactly the same, if they are inconsistent, adjust them immediately. After the first level is stacked, place the knocking plate on the edge of the iron chip and gently tap the knocking plate along the edge of the iron chip with a hammer to keep the edge neat, then use a level to measure its flatness, and measure it with a tape measure If the diagonals of the two windows of the iron core do not...

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Abstract

The invention discloses a method for completely mitering and stacking a dry type transformer core. The method comprises the following steps: carrying out repeated stacking in the first stage, whereintwo pieces are stacked once, after the first stacking, flatness is measured and adjusted, and the joints of next stacking and previous stacking are placed in a staggered mode; carrying out repeated stacking in the second to the last stage; and carrying out correction once after stacking once, wherein the joints and laps are checked, and whether the core column of the dry type transformer core is vertical to a yoke piece is checked. The stacking quality can be improved effectively.

Description

technical field [0001] The invention relates to the technical field of transformer manufacturing, in particular to a method for stacking transformer iron cores. Background technique [0002] The iron core is usually stacked by sheared silicon steel sheets, which is called a laminated iron core. The silicon steel sheets that make up the iron core are generally cut into the required shape and size, called punching sheets, and then the punching sheets are combined in an overlapping manner. The cross-sectional shape of the iron core column of the transformer has a rectangular shape, a multi-step stepped shape with a circular circumscribed circle, etc. The more the number of multi-step steps, the closer the cross-section is to a circle, but the more difficult it is to stack. The core stacking process of dry-type transformers is complicated, and it is necessary to design an effective and accurate stacking method to improve the stacking quality. Contents of the invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F41/02
Inventor 黄伟
Owner ZHONGBIAN GRP SHANGHAI TRANSFORMER CO LTD
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