CN110911120A

CN110911120A - Transformer core and amorphous alloy iron core single frame

Info

Publication number: CN110911120A
Application number: CN201911235933.8A
Authority: CN
Inventors: 杨东; 李晓君; 刘洪玉; 姜宁; 陈昌
Original assignee: Qingdao Yunlu Advanced Materials Technology Co ltd
Current assignee: Qingdao Yunlu Advanced Materials Technology Co ltd
Priority date: 2019-12-05
Filing date: 2019-12-05
Publication date: 2020-03-24

Abstract

The invention discloses a transformer and an amorphous alloy iron core single frame, wherein the amorphous alloy iron core single frame comprises an annular inner support and a plurality of layers of amorphous strips wound on the inner support, the support wall of the inner support comprises a plurality of layers of support plates which are arranged in a stacked mode, the number of the layers of the support plates is 2-3, and the thickness of each layer is 0.5-5 mm. Compared with the prior art, the amorphous alloy iron core single frame has the advantages that the inner support is of a multilayer structure, the support strength of the iron core single frame is increased, and the positive effects of improving the strength, performance stability and reliability of the iron core single frame are achieved.

Description

Transformer core and amorphous alloy iron core single frame

Technical Field

The invention relates to the technical field of amorphous alloy iron cores, in particular to a transformer iron core and an amorphous alloy iron core single frame.

Background

At present, distribution transformers used in power grids mainly include silicon steel distribution transformers and amorphous distribution transformers, wherein the no-load loss of the amorphous distribution transformers is saved by 80% compared with that of the silicon steel distribution transformers, and the amorphous distribution transformers gradually become mainstream products in the market. However, the amorphous alloy core has low strength due to high sensitivity of the amorphous alloy material to pressure, impact, bending, and the like.

Therefore, how to provide a solution to overcome the above-mentioned drawbacks remains a technical problem to be solved by those skilled in the art.

Disclosure of Invention

The invention aims to provide a transformer core and an amorphous alloy core single frame, wherein the strength of the amorphous alloy core single frame is relatively high.

In order to solve the technical problem, the invention provides an amorphous alloy iron core single frame which comprises an annular inner support and a plurality of layers of amorphous strips wound on the inner support, wherein the support wall of the inner support comprises a plurality of layers of support plates which are arranged in a stacked mode, the number of the support plates is 2-3, and the thickness of each layer is 0.5-5 mm.

Compared with the prior art, the amorphous alloy iron core single frame has the advantages that the inner support is of a multilayer structure, the support strength of the iron core single frame is increased, and the positive effects of improving the strength, performance stability and reliability of the iron core single frame are achieved.

Optionally, the inner support comprises a plurality of annular support plates which are sleeved and integrally formed; or the inner support is of a split structure and comprises a plurality of sections of support bodies along the circumferential direction, and each support body comprises a plurality of layers of support plates which are arranged in a stacked mode.

Optionally, the material of the inner support includes, but is not limited to, iron and iron alloy, copper and copper alloy, titanium and titanium alloy, ceramic, and silicone resin.

Optionally, the yield strength of the inner support is greater than or equal to 0.25 MPa.

Optionally, in two adjacent layers of the support plates, the width of the support plate relatively close to the central axis of the inner support is smaller than that of the other support plate.

Optionally, in two adjacent layers of the supporting plates, two ends of the supporting plate, which are relatively far away from the central axis, in the width direction of the supporting plate protrude out of the other supporting plate; or one ends of the supporting plates in the width direction of each layer are aligned.

Optionally, each layer of the amorphous ribbon wound around the inner support is divided into two parts, a part of the amorphous ribbon relatively close to the inner support is made of a uniform-width ribbon, and the other part of the amorphous ribbon is made of a non-uniform-width ribbon.

Optionally, one end of each layer of the amorphous strips in the width direction is aligned; the equal-width strip is a strip with a parallelogram or a rectangle section, and the width of each amorphous strip is gradually increased in each amorphous strip of the equal-width strip along the direction far away from the central axis; the non-uniform width strip is a strip with a trapezoidal section, and the width of the lower bottom of the non-crystalline strip relatively far away from the central axis is the same as that of the upper bottom of the other non-crystalline strip in two adjacent layers of the non-uniform width strips.

The invention also provides a transformer iron core which comprises a plurality of iron core single frames, wherein the iron core single frame is the amorphous alloy iron core single frame.

Since the above-mentioned single amorphous alloy iron core frame has the technical effects, the transformer iron core having the single amorphous alloy iron core frame also has similar technical effects, and therefore, the detailed description thereof is omitted here.

Drawings

FIG. 1 is a cross-sectional view of an inner support of a single frame of an amorphous alloy core according to the present invention;

fig. 2 is a cross-sectional view of the amorphous alloy core single frame provided in the present invention.

The reference numerals in fig. 1-2 are illustrated as follows:

1, supporting plates 11;

2 amorphous ribbon.

Detailed Description

In order to make the technical solutions of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings and specific embodiments.

As used herein, the term "plurality" refers to an indefinite number of plural, usually more than two; and when the term "plurality" is used to indicate a quantity of a particular element, it does not indicate a quantitative relationship between such elements.

Referring to fig. 1-2, fig. 1 is a cross-sectional view of an inner support of an amorphous alloy core single frame provided in the present invention, and fig. 2 is a cross-sectional view of an amorphous alloy core single frame provided in the present invention.

As shown in FIG. 1, the present invention provides an amorphous alloy core single frame, which comprises an annular inner support 1 and a plurality of layers of amorphous strips 2 wound around the inner support 1, wherein a support wall of the inner support 1 comprises a plurality of layers of support plates 11 arranged in a stacked manner.

Compared with the prior art, the amorphous alloy iron core single frame provided by the invention has the advantages that the inner support 1 adopts a multilayer structure, the support strength of the iron core single frame is increased, and the positive effects of improving the strength, the performance stability and the reliability of the iron core single frame are achieved.

Here, the number of layers of the support plates 11 included in the support wall of the inner support 1 is not limited in the embodiments of the present invention, and in the specific implementation, a person skilled in the art may set the number according to actual needs; preferably, the number of layers of the support plate 11 may be set to 2 to 3 layers.

In addition, the "ring" refers to a pattern closed in the circumferential direction, and may be a circular ring, a square ring, or another irregular structure.

In one aspect, the inner support 1 may include a plurality of nested ring support plates, each of which may be integrally formed. So set up, the wholeness ability of each annular supporting plate is better, and the assembly process of interior support 1 also can be comparatively simple.

In another scheme, the inner support 1 may be a split structure, and along the circumferential direction, the inner support 1 may include multiple segments of support bodies, and then, the support bodies may be assembled, and the two adjacent support bodies may be fixed by clamping, connecting by a connecting member (such as a screw, a binding band, etc.), bonding, etc. to form the final annular inner support 1; moreover, each support body 1 may comprise several layers of support plates 11 arranged in a stack.

With this arrangement, the number of the support plates 11 included in each support body 1 can be different, and the thickness of the inner support 1 at different positions in the circumferential direction can be adjusted to provide different strengths according to different use positions.

Here, the embodiment of the present invention also does not limit the material of the inner support 1, and those skilled in the art can set the material according to actual needs in the implementation. In an exemplary embodiment, the material of the inner support 1 may be iron and iron alloy, copper and copper alloy, titanium and titanium alloy, ceramic, or silicone resin.

The thicknesses of the supporting plates 11 of the layers of the supporting walls of the inner support 1 may be the same or different, and may be determined according to actual conditions. In the embodiment of the present invention, the thickness of each layer of support plate 11 can be controlled between 0.5 mm and 5mm, and the yield strength of the final inner support 1 can be greater than or equal to 0.25MPa to meet the use requirement of strength.

Further, in the two adjacent layers of the support plates 11, the support plate 11 relatively close to the central axis (the chain line in fig. 1) of the inner support 1 may have a smaller width than the other support plate 11, i.e., the closer to the central axis, the smaller the width of the support plate 11 may be.

On this basis, as shown in fig. 1, in two adjacent layers of the supporting plates 11, both ends of the supporting plate 11 relatively far away from the central axis in the width direction (i.e., the left-right direction in the drawing) can protrude from the other supporting plate 11; alternatively, the widthwise ends of the respective layers of the support plates 11 may be aligned. With these two forms of solutions, the inner support 1 can form a stepped structure at both ends or one end in the width direction, so that the inner support 1 can also participate in the semi-polygonal structure formed by winding the amorphous ribbon 2, so as to better improve the support strength.

Referring to fig. 2, each layer of amorphous ribbon 2 wound around the inner support 1 may be divided into two parts, wherein the part of the amorphous ribbon 2 relatively close to the inner support 1 (hereinafter referred to as inner edge part) may be a uniform width ribbon, and the other part of the amorphous ribbon 2 (hereinafter referred to as outer edge part) may be a non-uniform width ribbon. The uniform-width strip mainly refers to a strip with a parallelogram or a rectangle section, and the non-uniform-width strip mainly refers to a strip with a trapezoid section.

Here, the number of layers of the amorphous ribbon 2 respectively included in the inner edge portion and the outer edge portion is not limited in the embodiments of the present invention, and in practical implementation, a person skilled in the art may set the number according to actual needs, and in an exemplary scheme, the ratio of the number of layers of the amorphous ribbon 2 included in the inner edge portion and the outer edge portion may be approximately 1: 1.

When winding and assembling are carried out, one ends of each layer of amorphous strips 2 in the width direction can be aligned, and the width of each layer of amorphous strips 2 can be gradually increased in the direction far away from the central axis of the inner support 1 for the inner edge part; for the outer edge portion, in two adjacent amorphous strips 2, the width of the bottom of the amorphous strip 2 relatively far from the central axis may be the same as the width of the top of the amorphous strip 2 relatively close to the central axis, so that the bonding surfaces of the two adjacent amorphous strips 2 may be completely the same.

By the arrangement, the polygon formed by combining the amorphous strips 2 at the inner edge part and the outer edge part can be closer to a semi-circle, the effective sectional area of the iron core single frame can be increased, the gap on the surface of the iron core single frame can be reduced, the structural design is more reasonable, the strength of the iron core single frame can be obviously improved, and the performance of the iron core single frame is improved.

In specific practice, before winding, the size of each layer of amorphous strip 2 of the single iron core frame can be calculated according to the design scheme of the single iron core frame, and amorphous strips with corresponding sizes at the positions are cut by a cutting machine and other equipment according to a set program so as to be wound.

The invention also provides a transformer iron core which comprises a plurality of iron core single frames, wherein the iron core single frame is the amorphous alloy iron core single frame related to each embodiment.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that it is obvious to those skilled in the art that various modifications and improvements can be made without departing from the principle of the present invention, and these modifications and improvements should also be considered as the protection scope of the present invention.

Claims

1. The amorphous alloy iron core single frame comprises a stepped inner support (1) and a plurality of layers of amorphous strips (2) wound on the inner support (1), and is characterized in that a supporting wall of the inner support (1) comprises a plurality of layers of supporting plates (11) which are arranged in a stacked mode, the number of layers of the supporting plates (11) is 2-3, and the thickness of each layer is 0.5-5 mm.

2. An amorphous alloy core single frame according to claim 1, characterized in that the inner support (1) comprises a plurality of sleeved ring-shaped support plates; alternatively, the first and second electrodes may be,

the inner support (1) is of a split structure, and comprises a plurality of sections of support bodies along the circumferential direction, and each support body (1) comprises a plurality of layers of support plates (11) which are arranged in a stacked mode.

3. An amorphous alloy core single frame according to claim 1, characterized in that the material of the inner support (1) includes but is not limited to iron and iron alloy, copper and copper alloy, titanium and titanium alloy, ceramics and silicone resin.

4. An amorphous alloy core single frame according to claim 1, characterized in that the yield strength of the inner support (1) is greater than or equal to 0.25 MPa.

5. An amorphous alloy core single frame according to any one of claims 1-4, characterized in that, of two adjacent layers of said support plates (11), the width of said support plate (11) relatively close to the central axis of said inner support (1) is smaller than the other support plate (11).

6. The amorphous alloy core single frame according to claim 5, wherein, in two adjacent layers of the supporting plates (11), two ends of the supporting plate (11) which are relatively far away from the central axis in the width direction protrude out of the other supporting plate (11); alternatively, the first and second electrodes may be,

one ends of the supporting plates (11) in the width direction of each layer are aligned.

7. An amorphous alloy core single frame according to claim 6, characterized in that each layer of said amorphous ribbon (2) wound around said inner support (1) is divided into two parts, wherein the part of said amorphous ribbon (2) relatively close to said inner support (1) is made of a uniform width ribbon, and the other part of said amorphous ribbon (2) is made of a non-uniform width ribbon.

8. An amorphous alloy core single frame according to claim 7, wherein each layer of said amorphous ribbon (2) is aligned at one end in a width direction;

the equal-width strip is a strip with a parallelogram or a rectangle section, and the width of each amorphous strip (2) is gradually increased in each amorphous strip (2) along the direction far away from the central axis;

the non-uniform width strip is a strip with a trapezoidal section, and in two adjacent layers of the non-uniform width strips (2), the width of the lower bottom of the non-crystalline strip (2) relatively far away from the central axis is the same as that of the upper bottom of the other non-crystalline strip (2).

9. A transformer core comprising a plurality of core frames, wherein the core frames are amorphous alloy core frames according to any one of claims 1-8.