WO2013177815A1 - 立体三角形结构的非晶合金变压器铁心 - Google Patents

立体三角形结构的非晶合金变压器铁心 Download PDF

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Publication number
WO2013177815A1
WO2013177815A1 PCT/CN2012/076604 CN2012076604W WO2013177815A1 WO 2013177815 A1 WO2013177815 A1 WO 2013177815A1 CN 2012076604 W CN2012076604 W CN 2012076604W WO 2013177815 A1 WO2013177815 A1 WO 2013177815A1
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Prior art keywords
amorphous alloy
core
alloy transformer
iron core
single frame
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PCT/CN2012/076604
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English (en)
French (fr)
Inventor
许凯旋
郭献清
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广东海鸿变压器有限公司
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Application filed by 广东海鸿变压器有限公司 filed Critical 广东海鸿变压器有限公司
Priority to KR1020147021408A priority Critical patent/KR101644447B1/ko
Priority to JP2014555920A priority patent/JP5953541B2/ja
Priority to US14/372,634 priority patent/US20160086706A1/en
Publication of WO2013177815A1 publication Critical patent/WO2013177815A1/zh
Priority to US16/171,243 priority patent/US10937580B2/en

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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/04—Cores, Yokes, or armatures made from strips or ribbons
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F27/00—Details of transformers or inductances, in general
    • H01F27/24—Magnetic cores
    • H01F27/26—Fastening parts of the core together; Fastening or mounting the core on casing or support
    • H01F27/263—Fastening parts of the core together
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F41/00—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties
    • H01F41/02—Apparatus or processes specially adapted for manufacturing or assembling magnets, inductances or transformers; Apparatus or processes specially adapted for manufacturing materials characterised by their magnetic properties for manufacturing cores, coils, or magnets
    • H01F41/0206—Manufacturing of magnetic cores by mechanical means
    • H01F41/0213—Manufacturing of magnetic circuits made from strip(s) or ribbon(s)
    • H01F41/0226—Manufacturing of magnetic circuits made from strip(s) or ribbon(s) from amorphous ribbons

Definitions

  • the invention relates to an amorphous alloy transformer with a three-dimensional triangular structure, in particular to a method for manufacturing an amorphous alloy transformer core with a three-dimensional triangular structure.
  • amorphous alloy transformers have significant energy saving and environmental protection performance, they have gradually been accepted by users and become an ideal new generation distribution transformer.
  • the core of the amorphous alloy transformer appearing on the market has a three-phase five-column type and a three-phase three-column flat type wound core.
  • the two-plane amorphous alloy transformer core has a rectangular cross section, the core is large in volume, high in weight, and processing time. Long, the size design of the transformer is easily limited by the width of the amorphous alloy sheet, and the design and manufacture are not flexible. In addition, the cost of the above two amorphous alloy cores is also high.
  • the cores of the three-phase five-column and three-phase three-column structure are all planar structures, and the magnetic circuit lengths of the various stems will be different.
  • the three-phase power supply will not guarantee the balance, and the upper iron yoke or There is a seam in the lower iron yoke, and a high energy consumption zone will appear at the joint, and the high magnetic permeability of the amorphous alloy strip cannot be fully exerted, and the air gap formed at the joint will also increase the corresponding loss, and the core of the rectangular structure is further increased.
  • the transformer coil also causes the product to have poor short-circuit resistance.
  • the present invention is realized by a three-dimensional triangular structure amorphous alloy transformer core, which is composed of three identical rectangular single-frames having an approximately semi-circular cross section, and is characterized in that the manufacturing method comprises the following steps:
  • the rectangular module is used for the inner support.
  • the trapezoidal tape is wound from the inside to the outside from the beginning, and the trapezoidal tape is advanced on the winder in the set direction. a shape that is inclined outwardly from the upper and lower ends;
  • a complete amorphous alloy core consists of three identical single frame of Figure 3. Since the two core columns of each single frame are semi-circular, the three single-framed cores are brought together and fixed. a circular column of iron cores;
  • the assembled three-dimensional triangular core is pushed into the annealing furnace to complete the annealing process, eliminate internal stress, restore magnetism, and further improve the performance of the core;
  • the insulated heart straps are used to tie the split heart column, making the iron core a solid whole.
  • the amorphous alloy transformer core of the three-dimensional triangular structure is special in that the rectangular single frame has an approximately semicircular cross section.
  • the invention relates to a three-dimensional triangular structure amorphous alloy transformer core.
  • the amorphous alloy transformer core with a three-dimensional triangular structure is formed by three identical cross-sections of approximately semi-circular single-frames and then processed by a special process.
  • the split three-phase column is nearly circular, and each single frame is tightly wound by several trapezoidal amorphous alloy strips to form a semi-circular overall frame.
  • the weight of the iron yoke of the structure is reduced by more than 20%, the core angle is light, and the amount of the amorphous alloy material is greatly reduced; the iron yoke of the core can be provided with no seam. Without opening and reclosing, the transformer coil can be wound directly on the stem, resulting in fewer production and processing hours and improved labor efficiency.
  • the magnetic direction of the amorphous alloy ribbon is exactly the same as the magnetic path of the core, and the vibration during operation is small, which can greatly improve the noise problem of the conventional amorphous alloy; the three-phase magnetic circuit of the core is completely symmetric and equal.
  • the amorphous alloy transformer core of the three-dimensional triangular structure can be seamless without joints, and there is no high energy-consuming area, which can fully exert the non-existence
  • the high magnetic permeability of the crystal alloy minimizes the loss caused by the air gap formed at the joint; the no-load loss is proportional to the weight of the core, so the no-load loss of the amorphous alloy transformer core of the three-dimensional triangular structure is greatly reduced.
  • the cross section of the core of the amorphous alloy transformer is approximately circular, and the coil has a circular structure, so that the short circuit resistance of the amorphous alloy transformer is greatly improved.
  • Figure 1 is a front elevational view of a ladder strip of the present invention.
  • Figure 2 is a single frame roll of the present invention.
  • Figure 3 is a front view of the single frame of the present invention.
  • Fig. 4 is a cross-sectional view taken along line A-A of Fig. 3;
  • Figure 5 is a perspective view of a single frame of the present invention.
  • Figure 6 is a top plan view of the single frame merged in accordance with the present invention.
  • Figure 7 is a plan view of a solid amorphous alloy core of the present invention.
  • Figure 8 is a perspective view of a solid amorphous alloy core of the present invention.
  • a three-dimensional triangular structure amorphous alloy transformer core is composed of three identical rectangular single-frames with approximately semi-circular cross sections.
  • the thickness of the amorphous alloy strip is usually 0.025 mm, and the rectangular amorphous alloy strip of fixed width is cut into a plurality of trapezoidal strips of various specifications as shown in FIG. 1 according to design requirements;
  • the rectangular module 1 is used for internal support.
  • the trapezoidal tape is wound from the inside to the outside layer by layer, and the tape is placed on a dedicated winder. Advancing in the direction of the setting, winding into a shape in which the upper and lower ends are inclined outward; after winding the thickness required for the first stage, the outer layer of the first stage is then replaced with another size of the trapezoidal material. With the thickness of the second stage of winding, the required thickness is sequentially wound in the same way; if the number of stages of a single frame is 7, then seven types of trapezoidal tapes are required, and the next level of tape is required.
  • the width of the starting width is the width dimension of the tail of the upper strip, and the thickness of each level is not necessarily equal; 3 is a front view of the completed single frame, FIG. 4 is a cross-sectional view of the single frame, and FIG. 5 is a side view of the single frame.
  • a complete amorphous alloy core needs to be composed of three identical single frames 2 as shown in Figure 3. Since the two core columns of each single frame 2 are semi-circular, the three single-frame 2 hearts will be The columns are merged together and fixed, and the circular cores 3 constituting the core are formed.
  • the top view of the combined three-dimensional triangular amorphous alloy core is as shown in FIG. In Fig. 8, 2 is an upper iron yoke, and 4 is a lower iron yoke.
  • the assembled three-dimensional triangular core is pushed into the annealing furnace to complete the annealing process, eliminate internal stress, restore magnetism, and further improve the performance of the core;
  • the insulated tying strap is used to bind the split heart column, so that the iron core becomes a solid whole, as shown in FIG.
  • Figure 8 is a perspective view of the final three-dimensional triangular structure of the amorphous alloy transformer core. As can be seen from Fig. 8, three single frames are combined to form three cores of the core, and the three columns are arranged in a three-dimensional equilateral triangle. The column section is a quasi-polygon that is very close to the full circle.
  • the thickness of the amorphous alloy strip is usually 0.025 mm, and the material is hard and brittle.
  • the special process, tools and equipment are adopted in the invention, which overcomes the difficulty that the amorphous alloy strip is difficult to shear and the solid amorphous alloy core is difficult to manufacture.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Manufacturing Cores, Coils, And Magnets (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

一种立体三角形结构的非晶合金变压器铁心，属于电力设备的技术领域。该立体三角形结构的非晶合金变压器铁心由三个完全相同的截面呈近似半圆形的矩形单框拼合组成，其制造方法包括：裁片、卷绕、组装、退火和成型的步骤。该立体三角形结构的非晶合金变压器铁心具有节省材料、降低损耗、降低噪音、三相平衡、线圈无需套装、性能稳定和抗短路能力强的优点。

Description

立体三角形结构的非晶合金变压器铁心
技术领域
本发明涉及一种立体三角形结构的非晶合金变压器，尤其是一种立体三角形结构的非晶合金变压器铁心的制作方法。
背景技术
目前现有技术，节能是我国建设节约型社会的一项必不可少的国策，由于非晶合金变压器有显著的节能环保性能，已经逐步被广大用户所接受，成为理想的新一代配电变压器。目前市场上出现的非晶合金变压器所用铁心有三相五柱式和三相三柱平面式卷铁心，此两种平面结构的非晶合金变压器铁心截面为矩形，铁心体积大、重量高，加工时间长，变压器尺寸设计容易受非晶合金片材宽度的限制，设计制造不灵活，此外以上两种非晶合金铁心成本也较高。
从原理上分析，三相五柱式和三相三柱式结构的铁心都为平面结构，会形成各个心柱的磁路长度不等，三相供电将不能保证平衡，并且在上铁轭或下铁轭存在接缝，在接缝处会出现高能耗区，不能充分发挥非晶合金带材的高导磁特点，接缝处形成的空气隙也将增加相应的损耗，此外矩形结构的铁心和变压器线圈也造成了产品的抗短路能力差。
发明内容
本发明的目的是：提供一种立体三角形结构的非晶合金变压器铁心，它降低传统的非晶合金变压器铁心成本，并改善传统结构的产品在性能上存在的缺陷。
本本发明是这样实现的：一种立体三角形结构的非晶合金变压器铁心，它由三个完全相同的截面呈近似半圆形的矩形单框拼合组成，其特征在于：其制造方法包括以下步骤：
（1）裁片
将固定宽度的矩形非晶合金料带裁剪成梯形料带；
（2）卷绕
用矩形模块做内支撑，从单框的第1级卷绕开始，将梯形料带从起头由内侧向外侧逐层卷绕，并使梯形料带在卷绕机上按照设置的方向前进，卷绕成上、下两端向外倾斜的形状；
卷绕完第1级所需的厚度后，在第1级的外层再接着换用另一种尺寸的梯形料带卷绕第2级的厚度，按照同样方法依次卷绕完所需的几级厚度；
（3）组装
一台完整的非晶合金铁心由3个完全相同的图3单框组成，由于每个单框的两个心柱截面为半圆形，将3个单框的心柱进行靠拢合并并固定，则组成铁心的圆形心柱；
（4）退火
将组装好的立体三角形铁心推进退火炉中完成退火过程，消除内应力、恢复磁性，进一步提高铁心的性能；
（5）成型
铁心校位后用绝缘绑扎带对拼合后的心柱进行绑扎，使铁心成为一个牢固的整体。
所述的一种立体三角形结构的非晶合金变压器铁心，其特殊之处在于：所述矩形单框的截面呈近似半圆形。
本发明一种立体三角形结构的非晶合金变压器铁心，在结构上，立体三角形结构的非晶合金变压器铁心由三个完全相同的截面近似半圆形单框拼合后再经过特殊工艺处理而成，拼合后的三相心柱截面接近圆形，而每个单框是由几种梯形非晶合金料带依次紧密卷制形成一个截面为半圆形的整体框型。与以上传统结构的非晶合金铁心相比：此种结构的铁轭重量降低20%以上，铁心角重轻，大大减少非晶合金材料的用量；此种铁心的铁轭处可不设置接缝，无需打开和再闭合，变压器线圈可直接绕制在心柱上，生产加工工时少，提高了劳动效率。
在性能上，此种非晶合金料带的导磁方向与铁心的磁路方向完全一致，工作时振动小，可大大改善传统非晶合金的噪音问题；铁心的三相磁路完全对称等长，能够确保三相供电的平衡，使磁阻大大减少，激磁电流显著降低；立体三角形结构的非晶合金变压器铁心再铁轭处可无接缝，不存在高耗能区，可充分发挥出非晶合金高导磁的特点，最大的减少因接缝处形成的空气隙带来的损耗；空载损耗与铁心重量成正比，所以立体三角形结构的非晶合金变压器铁心空载损耗会大幅度下降；此种非晶合金变压器铁心截面近似圆形，同时线圈为圆形结构，使非晶合金变压器的抗短路能力大大得到改善。
附图说明
图1是本发明梯形料带的主视图。
图2是本发明的单框卷制。
图3是本发明的单框主视图。
图4是图3的A—A剖视图。
图5是本发明的单框的立体图。
图6是本发明的单框合并前俯视图。
图7是本发明立体非晶合金铁心的俯视图。
图8是本发明立体非晶合金铁心的立体图。
具体实施方式
下面结合附图对本本发明作进一步描述。
如图1所示，一种立体三角形结构的非晶合金变压器铁心，它由三个完全相同的截面呈近似半圆形的矩形单框拼合组成，
按以下步骤：
（1）裁片
材料采用非晶合金带材厚度通常为0.025mm，将固定宽度的矩形非晶合金料带按照设计要求裁剪成如图1所示的若干根规格尺寸的梯形料带；
（2）卷绕
如图2所示，用矩形模块1做内支撑，从单框的第1级卷绕开始，将梯形料带从起头由内侧向外侧逐层卷绕，并使料带在专用的卷绕机上按照设置的方向前进，卷绕成上、下两端向外倾斜的形状；卷绕完第1级所需的厚度后，在第1级的外层再接着换用另一种尺寸的梯形料带卷绕第2级的厚度，按照同样方法依次卷绕完所需的几级厚度；假如一个单框的级数为7级，则需要7种尺寸的梯形料带，下一级的料带起头宽度尺寸就是上一级料带尾头的宽度尺寸，每级的厚度不一定相等； 图3是完成后的单框正视图，图4是单框的横截面剖视图，图5是单框的侧视图。
（3）组装
一台完整的非晶合金铁心需要由3个完全相同如图3所示的单框2组成，由于每个单框2的两个心柱截面为半圆形，将3个单框2的心柱进行靠拢合并并固定，则组成铁心的圆形心柱3，合并后的立体三角形非晶合金铁心俯视图如图7所示。图8中，2是上铁轭，4是下铁轭。
（4）退火
将组装好的立体三角形铁心推进退火炉中完成退火过程，消除内应力、恢复磁性，进一步提高铁心的性能；
（5）成型
铁心校位后用绝缘绑扎带对拼合后的心柱进行绑扎，使铁心成为一个牢固的整体，如图8所示。
图8为最终的立体三角形结构的非晶合金变压器铁心立体图，从图中8可见，三个单框拼合组成铁心的三个心柱，三个心柱呈立体等边三角形排列，拼合后的心柱截面呈非常接近整圆的准多边形。
非晶合金带材厚度通常为0.025mm，材质硬而脆，本发明采取特殊工艺、工具以及设备，克服了非晶合金带材难以剪切和立体非晶合金铁心难以制作的困难。
以上所述的仅是本本发明的优先实施方式。应当指出的是，对于本领域的普通技术人员来说，在不脱离本本发明原理的情况下，还可以作出若干改进和变型，这也视为本本发明的保护范围。

Claims (2)

  1. 一种立体三角形结构的非晶合金变压器铁心，它由三个完全相同的截面呈近似半圆形的矩形单框拼合组成，其特征在于：其制造方法包括以下步骤：
    （1）裁片
    将固定宽度的矩形非晶合金料带裁剪成梯形料带；
    （2）卷绕
    用矩形模块做内支撑，从单框的第1级卷绕开始，将梯形料带从起头由内侧向外侧逐层卷绕，并使梯形料带在卷绕机上按照设置的方向前进，卷绕成上、下两端向外倾斜的形状；
    卷绕完第1级所需的厚度后，在第1级的外层再接着换用另一种尺寸的梯形料带卷绕第2级的厚度，按照同样方法依次卷绕完所需的几级厚度；
    （3）组装
    一台完整的非晶合金铁心由3个完全相同的图3单框组成，由于每个单框的两个心柱截面近似半圆形，将3个单框的心柱进行靠拢合并并固定，则组成铁心的圆形心柱；
    （4）退火
    将组装好的立体三角形铁心推进退火炉中完成退火过程，消除内应力、恢复磁性，进一步提高铁心的性能；
    （5）成型
    铁心校位后用绝缘绑扎带对拼合后的心柱进行绑扎，使铁心成为一个牢固的整体。
  2. 根据权利要求1所述的一种立体三角形结构的非晶合金变压器铁心，其特征在于：所述矩形单框的截面呈近似半圆形。
PCT/CN2012/076604 2012-05-28 2012-06-07 立体三角形结构的非晶合金变压器铁心 WO2013177815A1 (zh)

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KR1020147021408A KR101644447B1 (ko) 2012-05-28 2012-06-07 입체 삼각형 구조를 가진 비정질 합금 변압기 철심의 제조방법
JP2014555920A JP5953541B2 (ja) 2012-05-28 2012-06-07 立体三角形構造のアモルファス合金変圧器鉄心の製造方法
US14/372,634 US20160086706A1 (en) 2012-05-28 2012-06-07 Amorphous alloy transformer iron core of three-dimensional triangle structure
US16/171,243 US10937580B2 (en) 2012-05-28 2018-10-25 Amorphous alloy transformer iron core of three-dimensional triangle structure

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CN2012101676987A CN102682988A (zh) 2012-05-28 2012-05-28 立体三角形结构的非晶合金变压器铁芯
CN201210167698.7 2012-05-28

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US16/171,243 Continuation US10937580B2 (en) 2012-05-28 2018-10-25 Amorphous alloy transformer iron core of three-dimensional triangle structure

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