WO2013013365A1 - 非晶变压器磁芯的制备方法 - Google Patents

非晶变压器磁芯的制备方法 Download PDF

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Publication number
WO2013013365A1
WO2013013365A1 PCT/CN2011/002228 CN2011002228W WO2013013365A1 WO 2013013365 A1 WO2013013365 A1 WO 2013013365A1 CN 2011002228 W CN2011002228 W CN 2011002228W WO 2013013365 A1 WO2013013365 A1 WO 2013013365A1
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Prior art keywords
magnetic core
core
height direction
epoxy resin
amorphous transformer
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PCT/CN2011/002228
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English (en)
French (fr)
Inventor
朱正吼
江道祥
徐雪娇
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安徽芜湖君华科技材料有限责任公司
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Publication of WO2013013365A1 publication Critical patent/WO2013013365A1/zh

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    • 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 a novel method for preparing a magnetic core of an amorphous transformer, in particular to a method for superposing a plurality of cores with a low height (H 50 mm) to form a magnetic core which satisfies the requirements of an amorphous transformer.
  • Amorphous transformers are getting more and more attention from the world, mainly because their no-load losses are reduced by more than 70% and the no-load current is reduced by about 80% compared with silicon steel sheet core transformers. transformer.
  • the strip widths currently used for winding amorphous magnetic cores are generally 142mm, 170mm, and 213mm. Due to the large thickness fluctuations and unstable magnetic properties of iron-based amorphous ribbons with a width of more than 50mm in China, It restricts the development of amorphous power transformers.
  • the object of the present invention is to provide a novel method for preparing a magnetic core of an amorphous transformer, which solves the problems of large thickness fluctuation and unstable magnetic properties of an iron-based amorphous ribbon having a width of more than 50 mm in China.
  • a novel method for preparing an amorphous transformer magnetic core characterized in that:
  • 1K101 iron-based amorphous strip thickness 33 ⁇ 2 ⁇ , width 50mm ; 1K101 iron-based amorphous strip is wound into a rectangular core in a rectangular mold, the lamination coefficient is 0.84 ⁇ 0.86;
  • the slitting requirement is generally less than 0.5 mm, and the slit is encapsulated with epoxy resin;
  • the epoxy resin types are E-51 and E-44.
  • the advantages of the invention are as follows: (1) using a 1K101 strip having a width of less than 50 mm to prepare an amorphous transformer core; (2) a plurality of iron-based amorphous cores having a height lower than 50 mm superimposed into a height (width direction) to satisfy a transformer The magnetic properties of the required magnetic core meet the national standard of the amorphous transformer; (3) the production process is simple, the cost Low.
  • Figure 1 is a diagram showing the dimensions of a rectangular transformer core.
  • 30KVA amorphous transformer core 1K101 strip with width of 50mm and 38mm is used as raw material, and epoxy resin E-51 is used for organic rubber material.
  • a 50 mm strip was wound in a rectangular mold into two cores: A: 220 mm, B: 70 mm C: 40 mm, R: 1.5 mm, D: 50 mm, and then a 38 mm strip was placed in a rectangular mold.
  • Oxygen resin glue the total thickness of the front and back sides of the glue is about 2mm
  • the package core needs to be cured for 25min at 80 ⁇ , and then the three cores are stacked in the height direction to form an amorphous transformer combined core with a height of 146mm;
  • the purpose is to prevent the deformation and damage of the combined magnetic core during the subsequent processing; the two sides of the combined magnetic core are cut at a certain position in the height (D) direction (at the midpoint position) by wire cutting, and the slit is 0.1 mm.
  • the slit is encapsulated in epoxy resin.
  • 50KVA amorphous transformer core 1K101 strip with width of 40mm and 38mm is used as raw material, and epoxy resin E-51 is used for organic rubber material.
  • the 50mm strip is wound in a rectangular mold to a size of: A: 235mm, B: 75mm, C: 45.30mm, R: 1.5mm.
  • D 40mm core
  • 38mm strip at The rectangular mold is wound into two dimensions: A: 235mm, B: 75mm, C : 45.30mm, R: 1.5mm, D: 38mm, and the front and back sides of the above four cores are respectively Applying a layer of epoxy resin, the thickness of which is about 2mm, the package core needs to be cured at 80 °C for 25min, and then the four cores are stacked in the height direction to form an amorphous transformer combined core with a height of 174mm;
  • the clamping and fixing of the magnetic core is for preventing the deformation and damage of the combined magnetic core in the subsequent processing;
  • the wire cutting means is used to cut the two sides of the combined magnetic core at a certain position in the height direction (such as at the midpoint)
  • Two half-shaped U-shaped magnetic core, slit 0.3mm, and the joint is sealed with epoxy resin.
  • the two halves of the U-shaped magnetic core (a total of four U-shaped magnetic cores are superimposed) are wound separately.
  • 100KVA amorphous transformer core 1K101 strip with width of 50mm, 40mm, 17mm
  • the material is raw material, and the organic rubber material is epoxy resin E-51.
  • the 50mm strip is wound into a rectangular mold to a size of: A: 265mm, B: 75mm, C: 52mm, R: 1.5mm.
  • D 50mm magnetic core, 40mm strip in a rectangular mold
  • the dimensions are: A: 265mm, B: 75mm, C: 52mm, R: 1.5mm, D: 40mm magnetic core, and the 17mm strip is wound in a rectangular mold to make a size: A: 265mm , B: 75mm, C: 52mm, R: 1.5mm, D: 17mm magnetic core, the upper five magnetic cores are coated with a layer of epoxy resin on the front and back sides of the height direction, the thickness of which is 2mm On the left and right, the package core needs 25 ⁇ to be cured at 80 ⁇ , and then the four cores are stacked in the height direction to form an amorphous transformer combination core with a height of 217mm.
  • the mold of the combined core is replaced with a purpose to prevent the combined core from being Deformation and damage during subsequent processing; the two sides of the combined core are cut at a certain position in the height direction (at the midpoint) by wire cutting, and the slit is 0.4mn! The slit is encapsulated in epoxy resin.
  • 400KVA amorphous transformer core 1K101 strip with width of 50mm, 25mm 22mm is used as raw material, and epoxy resin E-51 is used for organic rubber material.
  • the 50mm strip is wound in a rectangular mold into three sizes: A: 450mm, B: 90mm, C: 90.5mm, R: 1.5mm, D: 50mm, and a 25mm strip in a rectangular mold.
  • the dimensions of the middle winding are: A: 450mm, B: 90mm, C : 90.5mm, R: 1.5mm, D: 25mm magnetic core, and the 22mm strip is wound into a rectangular mold to make a size: A : 265mm, B: 75mm, C: 52mm, R: 1.5mm, D: 22mm magnetic core, the upper five cores are coated with a layer of epoxy resin on the front and back sides in the height direction, the thickness It is about 2mm, the package core needs to be cured for 25min at 80 ⁇ , and then the four cores are stacked in the height direction to form an amorphous transformer combination core with a height of 217mm.
  • the special mold of the core is designed to prevent deformation and damage of the combined magnetic core during subsequent processing; the two sides of the combined magnetic core are cut at a certain position in the height direction (at the midpoint position) by means of wire cutting, and the slit is cut 0.5 Mm, the slit is encapsulated in epoxy resin.
  • 630KVA amorphous transformer core 1K101 strip with width of 40mm, 25mm is used as raw material, and epoxy resin E-51 is used for organic rubber material.
  • the 40mm strip is wound into a rectangular tool and made into a size: A: 360mm, B: 95mm, C: 104.6mm, R: 1.5mm, D: 40mm magnetic core 2, 25mm strip in a rectangular mold
  • the dimensions of the middle winding are: A: 360mm, B: 95mm, C: 104.6mm, R: 1.5mm, D: 25mm magnetic core, respectively, the front and back sides of the above four core height directions
  • 1250KVA amorphous transformer core 1K101 strip with width of 50mm, 30mm, 28 is selected as raw material, and epoxy resin E-51 is used as organic rubber material.
  • the 50mm strip is wound in a rectangular mold into two dimensions: A: 445mm, B: 100mm, C: 118.9mm, R: 1.5mm, D: 50mm, and a 30mm strip in a rectangular mold.
  • the dimensions of the middle winding are: A: 445mm, B: 100mm, C: 118.9mm, R: 1.5mm, D: 30mm magnetic core, and the 28mm strip is wound into a rectangular mold to make a size: A : 445mm, B: 100mm, C: 118.9mm, R: 1.5mm, D: 28mm magnetic core, the upper four cores are coated with a layer of epoxy resin on the front and back sides of the height direction, The thickness is about 2mm, the package core is 8 (TC needs 25min curing, then the four cores are overlapped in the height direction into a height of 174mm amorphous transformer combined core; remove all the special mold inside and outside the single core, change A special mold for combining the magnetic cores, the purpose of which is to prevent deformation and damage of the combined magnetic core during subsequent processing; cutting the two sides of the combined magnetic core at a certain position in the height direction (at the midpoint position) by means of wire cutting, The slit is 0.3mm, and the slit is

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

Abstract

一种非晶变压器磁芯的制备方法，制备工艺步骤如下：1.将铁基非晶带材在矩形模具中绕制成矩形磁芯，叠片系数为0.84—0.86；2.在每个磁芯高度方向刷一层环氧树脂胶，厚度为2mm左右，放置在烘箱内固化，固化条件为（0—150）°CX（0-18）h；3.将所述矩形磁芯在高度方向上叠加成高度满足非晶变压器要求的磁芯并固定，防止组合磁芯在后续加工过程中的变形和损坏；4.采用线切割手段将组合磁芯沿高度方向的某个位置切断，切缝要求小于0.5mm，在分成的两个U形磁芯外分别缠绕绕组，切缝处用环氧树脂胶封装。通过将若干个宽度低于50mm的铁基非晶带材所绕制的铁基非晶磁芯叠加而获得高度满足变压器要求的磁芯，磁性能够满足非晶变压器的国家标准，生产工艺简单，成本低。

Description

非晶变压器磁芯的制备方法 技术领域
本发明涉及一种新型非晶变压器磁芯制备方法，特别涉及一种将若干个高度 较低 (H 50mm)的磁芯叠加成高度满足非晶变压器要求的磁芯的制备。
背景技术
非晶变压器越来越受世人的关注，主要是由于其相对于硅钢片铁心变压器而 言， 其空载损耗下降 70%以上， 空载电流下降约 80%， 是目前节能效果较理想 的配电变压器。 但目前用于绕制非晶变压器磁芯的带材宽度一般为 142mm、 170mm, 213mm,由于中国目前宽度大于 50mm的铁基非晶带材普遍存在厚度波 动大， 磁性能不稳定等问题， 严重制约了非晶电力变压器的发展。
发明内容
本发明的目的是提供一种新型非晶变压器磁芯的制备方法，解决中国目前宽 度大于 50mm的铁基非晶带材普遍存在厚度波动大， 磁性能不稳定等问题。
一种新型非晶变压器磁芯的制备方法， 其特征在于：
制备工艺步骤如下：
( 1 )、选用 1K101铁基非晶带材， 厚度为 33±2μιη， 宽度 50mm; 将 1K101 铁基非晶带材在矩形模具中绕制成矩形磁芯， 其叠片系数为 0.84〜0.86；
(2)、 在每个磁芯高度方向刷环氧树脂胶， 厚度为 2mm左右， 放置在烘箱 内固化， 其固化温度 ¾ (0〜150) °C， 时间 （0〜18 ) h ；
(3 )、将所述矩形磁芯在高度方向上叠加成高度满足非晶变压器要求的磁芯 并固定； 防止组合磁芯在后续加工过程中的变形和损坏；
(4) 采用线切割手段将组合磁芯沿高度方向的某个位置切断， 切缝要求一 般小于 0.5mm， 切缝处采用环氧树脂胶封装；
(5 )、 分成两半部分 U形磁芯外分别缠绕绕组。
所述的环氧树脂型号为 E-51、 E-44。
本发明的优点是：（1 )采用宽度低于 50mm的 1K101带材来制备非晶变压器 磁芯； （2)若干个高度低于 50mm铁基非晶磁芯叠加成高度（宽度方向）满足变 压器要求的磁芯的磁性能满足非晶变压器的国家标准； （3 )生产工艺简单， 成本 低。
附图说明
图 1为矩形变压器磁芯的尺寸的标识图。
具体实施方式
实施例 1 :
30KVA非晶变压器磁芯： 选用宽度为 50mm、 38mm的 1K101带材为原材 料， 有机胶材料选用环氧树脂 E-51。 将 50mm的带材在矩形模具中绕制成尺寸 为： A:220mm、 B:70mm C: 40mm、 R: 1.5mm、 D:50mm的磁芯 2个， 而后将 38mm的带材在矩形模具中绕制成尺寸为： A:220mm、 B:70mm、 C: 40mm, R: 1.5mm、 D:38mm的磁芯 1个， 将以上三个磁芯高度方向上的正反两面分别涂一 层环氧树脂胶， 其正反两面胶总厚度为 2mm左右， 封装磁芯在 80Ό需要 25min 固化， 而后将三个磁芯沿着高度方向重叠成高度为 146mm的非晶变压器组合磁 芯； 采用模具固定， 其目的是防止组合磁芯在后续加工过程中的变形和损坏； 采 用线切割手段将组合磁芯的两边在高度 （D) 方向的某个位置 （在中点位置） 切 断， 切缝 0.1mm， 切缝处采用环氧树脂胶封装。
实施例 2:
50KVA非晶变压器磁芯： 选用宽度为 40mm、 38mm的 1K101带材为原材 料， 有机胶材料选用环氧树脂 E-51。 将 50mm的带材在矩形模具中绕制成尺寸 为： A:235mm、 B:75mm、 C: 45.30mm、 R: 1.5mm. D:40mm的磁芯 3个，.而 后将 38mm的带材在矩形模具中绕制成尺寸为： A:235mm、B:75mm、C: 45.30mm、 R: 1.5mm, D:38mm的磁芯 1个， 将以上四个磁芯高度方向上的正反两面分别 涂一层环氧树脂胶， 其厚度为 2mm左右， 封装磁芯在 80°C需要 25min固化， 而 后将四个磁芯沿着高度方向重叠成高度为 174mm的非晶变压器组合磁芯； 将组 合磁芯的夹紧固定，其目的是防止组合磁芯在后续加工过程中的变形和损坏；采 用线切割手段将组合磁芯的两边在高度方向的某个位置（如在中点位置）切断成 二半 U形磁芯， 切缝 0.3mm, 切缝处采用环氧树脂胶封装。 二半 U形磁芯 （共 四个 U形磁芯叠加） 外分别缠绕绕组。
实施例 3 :
100KVA非晶变压器磁芯： 选用宽度为 50mm、 40mm, 17mm的 1K101带 材为原材料， 有机胶材料选用环氧树脂 E-51。 将 50mm的带材在矩形模具中绕 制成尺寸为： A:265mm、 B:75mm、 C: 52mm、 R: 1.5mm. D:50mm 的磁芯 2 个，将 40mm的带材在矩形模具中绕制成尺寸为： A:265mm、 B:75mm、 C: 52mm, R: 1.5mm, D:40mm的磁芯 2个， 将 17mm的带材在矩形模具中绕制成尺寸为： A:265mm、 B:75mm、 C: 52mm、 R: 1.5mm, D:17mm的磁芯 1个， 将以上五个 磁芯沿高度方向上的正反两面分别涂一层环氧树脂胶， 其厚度为 2mm左右， 封 装磁芯在 80Ό需要 25ηώι 固化， 而后将四个磁芯沿着高度方向重叠成高度为 217mm 的非晶变压器组合磁芯； 换上组合磁芯的模具， 其目的是防止组合磁芯 在后续加工过程中的变形和损坏；采用线切割手段将组合磁芯的两边在高度方向 的某个位置 （在中点位置） 切断， 切缝 0.4mn！， 切缝处釆用环氧树脂胶封装。 实施例 4:
400KVA非晶变压器磁芯： 选用宽度为 50mm、 25mm 22mm的 1K101带 材为原材料， 有机胶材料选用环氧树脂 E-51。 将 50mm的带材在矩形模具中绕 制成尺寸为： A:450mm、 B:90mm、 C: 90.5mm、 R: 1.5mm、 D:50mm的磁芯 3 个，将 25mm的带材在矩形模具中绕制成尺寸为： A:450mm、B:90mm、C: 90.5mm、 R: 1.5mm, D:25mm的磁芯 1个， 将 22mm的带材在矩形模具中绕制成尺寸为： A:265mm、 B:75mm、 C: 52mm、 R: 1.5mm, D:22mm的磁芯 1个， 将以上五个 磁芯沿高度方向上的正反两面分别涂一层环氧树脂胶， 其厚度为 2mm左右， 封 装磁芯在 80Ό需要 25min 固化， 而后将四个磁芯沿着高度方向重叠成高度为 217mm 的非晶变压器组合磁芯； 拆除所有单个磁芯内外的专用模具， 换上组合 磁芯的专用模具，其目的是防止组合磁芯在后续加工过程中的变形和损坏；采用 线切割手段将组合磁芯的两边在高度方向的某个位置（在中点位置）切断， 切缝 0.5mm, 切缝处采用环氧树脂胶封装。
实施例 5:
630KVA非晶变压器磁芯: 选用宽度为 40mm、 25mm的 1K101带材为原材 料， 有机胶材料选用环氧树脂 E-51。 将 40mm的带材在矩形 具中绕制成尺寸 为: A:360mm、 B :95mm, C: 104.6mm, R: 1.5mm、 D :40mm的磁芯 2个， 将 25mm的带材在矩形模具中绕制成尺寸为： A:360mm、 B:95mm、 C: 104.6mm, R: 1.5mm, D:25mm的磁芯 2个， 将以上四个磁芯高度方向上的正反两面分别 涂一层环氧树脂胶， 其厚度为 2mm左右， 封装磁芯在 80°C需要 25min固化， 而 后将四个磁芯沿着高度方向重叠成高度为 146mm的非晶变压器磁芯组合磁芯； 拆除所有单个磁芯内外的专用模具， 换上组合磁芯的专用模具，其目的是防止组 合磁芯在后续加工过程中的变形和损坏；采用线切割手段将组合磁芯的两边在高 度方向的某个位置（在中点位置）切断， 切缝 OJmm, 切缝处采用环氧树脂胶封 装。
实施例 6:
1250KVA非晶变压器磁芯： 选用宽度为 50mm、 30mm, 28的 1K101带材 为原材料， 有机胶材料选用环氧树脂 E-51。 将 50mm的带材在矩形模具中绕制 成尺寸为： A:445mm、 B:100mm、 C: 118.9mm, R: 1.5mm、 D:50mm的磁芯 2 个， 将 30mm 的带材在矩形模具中绕制成尺寸为： A:445mm、 B:100mm、 C: 118.9mm, R: 1.5mm, D:30mm的磁芯 1个， 将 28mm的带材在矩形模具中绕制 成尺寸为： A:445mm、 B:100mm、 C: 118.9mm, R: 1.5mm、 D:28mm的磁芯 1 个，将以上四个磁芯沿高度方向上的正反两面分别涂一层环氧树脂胶，其厚度为 2mm左右， 封装磁芯在 8(TC需要 25min固化， 而后将四个磁芯沿着高度方向重 叠成高度为 174mm的非晶变压器组合磁芯；拆除所有单个磁芯内外的专用模具， 换上组合磁芯的专用模具，其目的是防止组合磁芯在后续加工过程中的变形和损 坏； 采用线切割手段将组合磁芯的两边在高度方向的某个位置（在中点位置）切 断， 切缝 0.3mm， 切缝处采用环氧树脂胶封装。

Claims

权 利 要 求
1、 一种新型非晶变压器磁芯的制备方法， 其特征在于- 制备工艺步骤如下：
( 1 )、 选用 1K101铁基非晶带材， 厚度为 33±2μηι， 宽度 50mm; 将 不同宽度的 1K101 铁基非晶带材在同矩形模^中绕制成形状相同、 宽度不 同的矩形磁芯， 其叠片系数为 0.84〜0.86；
(2)、 在每个磁芯高度方向刷环氧树脂胶， 厚度为 2mm左右， 放置在 烘箱内固化， 其固化温度为 （0〜150) V , 时间 （0〜18) h ；
(3 )、将所述矩形磁芯在高度方向上叠加成高度满足非晶变压器要求的 磁芯并固定； 防止组合磁芯在后续加工过程中的变形和损坏；
(4) 采用线切割手段将组合磁芯沿高度方向的某个位置切断， 切缝要 求一般小于 0.5mm， 切缝处采用环氧树脂胶封装；
(5 )、 分成两半部分 U形磁芯外分别缠绕绕组。
2、 根据权利要求 1所述的新型非晶变压器磁芯的制备方法， 其特征在于： 所述 的环氧树脂型号为 E-51、 E-44。
3、 根据权利要求 1所述的新型非晶变压器磁芯的制备方法， 其特征在于： 所述 的固化温度为 （70〜85 ) °C， 时间 （0.3〜1 ) h。
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