CN210156231U

CN210156231U - Transformer iron core

Info

Publication number: CN210156231U
Application number: CN201921280062.7U
Authority: CN
Inventors: 黄伟
Original assignee: CHINA ZHONGBIAN GROUP SHANGHAI TRANSFORMER Co Ltd
Current assignee: CHINA ZHONGBIAN GROUP SHANGHAI TRANSFORMER Co Ltd
Priority date: 2019-08-08
Filing date: 2019-08-08
Publication date: 2020-03-17
Anticipated expiration: 2029-08-08

Abstract

The utility model provides a transformer iron core, which consists of a plurality of stacked first silicon steel sheets and second silicon steel sheets, wherein both ends of the first silicon steel sheets are provided with first sharp corners, and both sides of the first sharp corners are respectively a first bevel edge and a second bevel edge; two ends of the second silicon steel sheet are provided with second sharp corners, and two side edges of each second sharp corner are third bevel edges; the first sharp angle and the second sharp angle are both 45 degrees, the length of the first bevel edge is greater than that of the second bevel edge, and the length of the second bevel edge is equal to that of the third bevel edge; the pair of parallel first silicon steel sheets and the pair of parallel second silicon steel sheets are sequentially connected end to form a first lamination, and the first sharp corner is connected with the tip end of the corresponding second sharp corner; the assembling direction of the second lamination is opposite to that of the first lamination, and the first lamination and the second lamination are alternately stacked. Half straight half oblique seam is assembled through first silicon steel sheet and second silicon steel sheet, and straight seam and oblique seam appear in the iron core lamination in turn, and the oblique seam is 45, and the corner of iron core forms the scarf.

Description

Transformer iron core

Technical Field

The utility model relates to a transformer field especially relates to a transformer core.

Background

The transformer manufacturing industry has been in development for over a hundred years to date, but has not changed much in terms of its basic principle and overall structure. Along with the practical utility model of the silicon steel sheet and the continuous improvement, the performance of the silicon steel sheet is greatly improved. The low-loss high-permeability grain-oriented cold-rolled silicon steel sheet widely applied at present improves the grain structure of the silicon steel sheet material and has obvious effect on reducing hysteresis loss. With good materials, the materials are limited by the lamination process, and the traditional staggered lamination technology has a large air gap at a joint, so that magnetic saturation state of magnetic flux is easy to occur, and great influence is brought to no-load loss and iron core noise. Meanwhile, the iron core formed by stacking has sharp edges at corners, is easy to scratch or bump, and is not favorable for carrying and mounting.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a transformer core, carry out the miscut to the corner of iron core, avoid sharp-pointed edge to appear.

In order to achieve the above object, the utility model provides a transformer core comprises a plurality of closed assembly's first silicon steel sheet and second silicon steel sheet, wherein:

the two ends of the first silicon steel sheet are both provided with first sharp corners, the first sharp corners at the two ends are symmetrical around the center of the first silicon steel sheet, the two sides of the first sharp corner are respectively a first bevel edge and a second bevel edge, the first sharp corner is 45 degrees, and the included angles between the first bevel edge and the central axis of the first silicon steel sheet and the included angles between the second bevel edge and the central axis of the first silicon steel sheet are both 45 degrees;

two ends of the second silicon steel sheet are both provided with second sharp corners, the second sharp corners at the two ends are symmetrical to the central axis of the second silicon steel sheet, two side edges of the second sharp corners are third bevel edges, the second sharp corners are 45 degrees, and an included angle between each third bevel edge and the central axis of the second silicon steel sheet is 45 degrees;

the length of the first oblique side is a, the length of the second oblique side is b, and the length of the third oblique side is c, wherein a is larger than b;

the pair of parallel first silicon steel sheets and the pair of parallel second silicon steel sheets are sequentially connected end to form a square frame-shaped first lamination, and the first sharp corner is connected with the tip end of the corresponding second sharp corner; the assembling direction of the second lamination is opposite to that of the first lamination, namely the first lamination and the second lamination are horizontally symmetrical, and the first lamination and the second lamination are alternately stacked.

Further, in the transformer core, a groove is formed in the center of one side, opposite to the first silicon steel sheet, of the first silicon steel sheet, a third silicon steel sheet is arranged on a symmetrical shaft between the second silicon steel sheets, third sharp corners are arranged at two ends of the third silicon steel sheet, the shape of the groove is matched with that of the third sharp corners, and two ends of the third silicon steel sheet are respectively embedded and clamped in the grooves opposite to the first silicon steel sheet.

Further, in the transformer core, the third sharp corner and the second sharp corner have the same shape and size.

Further, in the transformer core, the length of the third silicon steel sheet is equal to that of the second silicon steel sheet, and the groove is in a sharp-angled U shape.

Further, in the transformer core, the length of the third silicon steel sheet is smaller than that of the second silicon steel sheet, and the groove is in a V shape.

Further, in the transformer core, a is 2 b.

Compared with the prior art, the beneficial effects of the utility model are mainly embodied in that: half straight half skew seam is assembled through first silicon steel sheet and second silicon steel sheet, and straight seam and skew seam appear in turn in the iron core lamination, and the skew seam is 45, and silicon steel sheet end angle is equipped with one side two short chamfered edge, makes the corner of iron core form the scarf, and the structure is reliable, and it is also convenient to cut and pile up, and silicon steel sheet utilization ratio is high.

Drawings

Fig. 1 is a schematic structural diagram of a first lamination of a transformer core according to the present invention;

fig. 2 is a schematic structural diagram of a second lamination of a transformer core according to the present invention;

fig. 3 is a schematic structural diagram of a first lamination of another transformer core according to the present invention;

fig. 4 is a schematic structural diagram of a second lamination of another transformer core according to the present invention.

Wherein: the device comprises a first silicon steel sheet 1, a first sharp corner 2, a second silicon steel sheet 3, a second sharp corner 4, a third silicon steel sheet 5, a third sharp corner 6 and a groove 7.

Detailed Description

The transformer core of the present invention will now be described in greater detail with reference to the schematic drawings in which preferred embodiments of the invention are shown, it being understood that those skilled in the art may modify the invention herein described while still achieving the advantageous effects of the invention. Accordingly, the following description should be construed as broadly as possible to those skilled in the art and not as limiting the invention.

In the description of the present invention, it should be noted that, for the orientation words, if there are terms such as "center", "lateral", "longitudinal", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., the orientation and positional relationship indicated are based on the orientation or positional relationship shown in the drawings, and only for the convenience of describing the present invention and simplifying the description, it is not intended to indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and not be construed as limiting the specific scope of the present invention.

Furthermore, if the terms "first" and "second" are used for descriptive purposes only, they are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features. Thus, the definition of "a first" or "a second" feature may explicitly or implicitly include one or more of the features, and in the description of the invention, "at least" means one or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly specified or limited, the terms "assembled", "connected", and "connected", if any, are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally connected; or may be a mechanical connection; the two elements can be directly connected or connected through an intermediate medium, and the two elements can be communicated with each other. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to specific situations.

The invention is described in more detail in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become more apparent from the following description. It should be noted that the drawings are in simplified form and are not to precise scale, and are provided for convenience and clarity in order to facilitate the description of the embodiments of the present invention.

As shown in fig. 1 to 4, the utility model provides a transformer core comprises a plurality of first silicon steel sheet 1 of closed assembly and second silicon steel sheet 3, wherein:

the two ends of the first silicon steel sheet 1 are both provided with first sharp corners 2, the first sharp corners 2 at the two ends are symmetrical with the center of the first silicon steel sheet 1, the two sides of the first sharp corner 2 are respectively a first bevel edge and a second bevel edge, the first sharp corner 2 is 45 degrees, and the included angles between the first bevel edge and the second bevel edge and the central axis of the first silicon steel sheet 1 are both 45 degrees;

two ends of the second silicon steel sheet 3 are both provided with second sharp corners 4, the second sharp corners 4 at the two ends are symmetrical about the central axis of the second silicon steel sheet 3, two side edges of the second sharp corners 4 are third bevel edges, the second sharp corners 4 are 45 degrees, and the included angle between the third bevel edges and the central axis of the second silicon steel sheet 3 is 45 degrees;

the length of the first oblique side is a, the length of the second oblique side is b, and the length of the third oblique side is c, wherein a > b ═ c, preferably, a ═ 2b ═ 2 c;

the pair of parallel first silicon steel sheets 1 and the pair of parallel second silicon steel sheets 3 are sequentially connected end to form a square frame-shaped first lamination, and the first sharp corner 2 is connected with the tip of the corresponding second sharp corner 4; the assembling direction of the second lamination is opposite to that of the first lamination, namely the first lamination and the second lamination are horizontally symmetrical, and the first lamination and the second lamination are alternately stacked.

Meanwhile, a groove 7 is formed in the center of one side, opposite to the first silicon steel sheet 1, of the third silicon steel sheet 5, the third silicon steel sheet 5 is arranged on a symmetry axis between the opposite second silicon steel sheets 3, third sharp corners 6 are arranged at two ends of the third silicon steel sheet 5, the shape of the groove 7 is matched with that of the third sharp corners 6, two ends of the third silicon steel sheet 5 are respectively embedded and clamped in the groove 7, opposite to the first silicon steel sheet 1, the shape and the size of the third sharp corners 6 are identical to those of the second sharp corners 4, and the shape of the third silicon steel sheet 5 is identical to that of the second silicon steel sheet 3. As shown in fig. 1 to 2, when the length of the third silicon steel sheet 5 is equal to the length of the second silicon steel sheet 3, the groove 7 is in a U shape with a sharp corner; as shown in fig. 3 to 4, when the length of the third silicon steel sheet 5 is smaller than that of the second silicon steel sheet 3, the groove 7 is V-shaped.

In conclusion, in this embodiment, the transformer core that proposes carries out half straight half diagonal joint through first silicon steel sheet and second silicon steel sheet and assembles, and straight seam and diagonal joint appear in the iron core lamination in turn, and the diagonal joint is 45, and silicon steel sheet end angle is equipped with one side and is short two scarf, makes the corner of iron core form the scarf, and the structure is reliable, and it is also convenient to cut and pile up, and silicon steel sheet high-usage.

The above description is only for the preferred embodiment of the present invention, and does not limit the present invention. Any technical personnel who belongs to the technical field, in the scope that does not deviate from the technical scheme of the utility model, to the technical scheme and the technical content that the utility model discloses expose do the change such as the equivalent replacement of any form or modification, all belong to the content that does not break away from the technical scheme of the utility model, still belong to within the scope of protection of the utility model.

Claims

1. The utility model provides a transformer core which characterized in that comprises a plurality of first silicon steel sheets and the second silicon steel sheet of closed assembly, wherein:

2. The transformer core according to claim 1, wherein a groove is formed in a center of an opposite side of the first silicon steel sheet, a third silicon steel sheet is arranged on a symmetry axis between the opposite second silicon steel sheets, third sharp corners are formed at two ends of the third silicon steel sheet, shapes of the grooves are matched with those of the third sharp corners, and two ends of the third silicon steel sheet are respectively embedded and clamped in the groove opposite to the first silicon steel sheet.

3. The transformer core of claim 2, wherein the third cusp and the second cusp are both shaped and sized identically.

4. The transformer core according to claim 3, wherein the third silicon steel sheet has a length equal to that of the second silicon steel sheet, and the groove has a pointed U-shape.

5. The transformer core according to claim 3, wherein the third silicon steel sheet has a length smaller than that of the second silicon steel sheet, and the groove is V-shaped.

6. The transformer core of claim 1, wherein a-2 b.