JPS5931011A - Shell type stepped wound core - Google Patents

Abstract

PURPOSE:To reduce the used amount of electric steel plates by a core wherein the sectional forms of outer legs having no winding wound round are changed respectively. CONSTITUTION:Units wound cores (a), (b), (c), (d), (e) manufactured by turning core materials separately are stacked in sequence to form wound cores 12 and 13, which are arranged side by side. The leg parts of the cores 12, 13 have cut surfaces such that one leg part constituting a center leg is shaped into the substantially semi-circular form including steps projected to the area of a window, and the other leg part constituting the outer leg is shaped into the substantially trapezoidal form including steps recessed along the outer periphery of a winding 4 to be wound. By so doing, it becomes possible to shorten the length of magnetic path of each unit wound core and to reduce the used amount of electric steel plates.

Description

【発明の詳細な説明】 本発＠８扛柱上変圧器の外鉄形段何巻鉄心に関する０ 従来の外鉄形巻鉄心ｌは、第１図（ａ）Φ）に示すよう
に２個の巻鉄心２と３を並置してバンド締めにより一体
にし、そのセンター脚には巻Ｉｗ４が巻装される。これ
らの巻鉄心２および３は、絶１図Φ）中のｚ−ｚ断面、
ｙ−ｙ断面を絽２図および第８図に示すように、脚およ
びヨークとも切断面が窓内に向うに従い突き出す段付の
略半円形状に夫々形成されている。これらの外鉄形設付
巻鉄心２，３ｔ−製作するには、まず−誉巾の狭い電気
鋼板で最内周の単位巻鉄心Ａを巻回し、この単位巻鉄心
Ａの周囲に幾分中の広い電気鋼板で単位巻鉄心Ｂを巻回
し、この周囲に更に巾の広い電気銅板で単位巻鉄心Ｃを
巻回して一個の巻鉄心２，３を夫々製作する。次にこれ
らの巻鉄心２と３を第１図（ａ）Φ）に示す如く一体に
して一個の外鉄形設付巻鉄心ｌが得られる。Detailed Description of the Invention [0] Regarding the number of turns of the outer iron-type stage core of the present @8 pole-top transformer, the conventional outer iron-type wound core l has two pieces as shown in Fig. 1 (a) Φ). The wound iron cores 2 and 3 are placed side by side and integrated by band tightening, and the winding Iw4 is wound around the center leg. These wound cores 2 and 3 are shown in the z-z cross section in Figure Φ),
As shown in FIG. 2 and FIG. 8 in y-y cross section, both the legs and the yoke are each formed into a stepped, approximately semicircular shape with the cut surfaces protruding toward the inside of the window. In order to manufacture these outer iron type installed wound cores 2 and 3 tons, first, wrap the innermost unit turn core A with electrical steel plate having a narrow width, and then wrap the innermost unit turn core A around the unit turn core A to some extent. A unit winding core B is wound with a wide electric steel plate, and a unit winding core C is further wound around this with a wide electric copper plate to produce one winding core 2 and 3, respectively. Next, these wound cores 2 and 3 are integrated as shown in FIG. 1(a) Φ) to obtain a single outer iron type attached wound core 1.

したがって、巻線４が巻装されるセンター脚の切断面は
略円形となっている。Therefore, the cut surface of the center leg around which the winding 4 is wound is approximately circular.

尚、第２図中のα、β紘各段部の寸法であり、ｒは単位
巻鉄心ＡＯ中寸法でおり、ｔは率位巻鉄心Ｃの巻厚、渦
、ｎは単位＠鉄心１３−Ｃ，Ａ−Ｂ−Ｃの巻厚を夫々示
す＠さらに、Ｌ、、Ｌ１ζは単位巻鉄心Ａ、Ｂ、Ｃのヨ
ーク部の窓枠寸法を示す０ ところが、従来の外鉄形設付巻鉄心においては、最内周
の単位巻鉄心の外周に巾の異なる他の単位巻鉄心を順次
巻回して形成すると共に、巻装を巻回しない外脚がセン
ター脚と同様に窓内に突き出す段付の略半円形状に形成
されている。そのため、単位巻鉄心Ａの外周に巻回され
る単位巻鉄心Ｂ、Ｃのヨーク部の寸法が単位巻鉄心Ａの
ヨーク部に比べ長くなってしまい、その分の電気鋼板の
量が嵩んでし１う。特に、最近開発された非晶質電気鋼
板（従来の電気鋼板に比較し鉄損が１／３である利点を
有するが高価である。）にて形成する場合には大へん高
価となるため、でさるだけ使用量を減らすことが望まし
い。In addition, it is the dimension of each stage part of α and β in FIG. 2, r is the dimension in the unit winding core AO, t is the winding thickness and vortex of the lead winding core C, and n is the unit @core 13- Indicates the winding thicknesses of C, A-B-C, respectively@Furthermore, L, , L1ζ indicate the window frame dimensions of the yoke portions of unit winding cores A, B, and C. In this case, other unit winding cores of different widths are sequentially wound around the outer circumference of the innermost unit winding core, and the outer leg with no windings protrudes into the window in the same way as the center leg. It is formed in a roughly semicircular shape. As a result, the dimensions of the yoke parts of unit-turn cores B and C wound around the outer periphery of unit-turn core A are longer than the yoke part of unit-turn core A, and the amount of electrical steel sheet increases accordingly. 1. In particular, it is very expensive when formed using a recently developed amorphous electrical steel sheet (which has the advantage of having 1/3 the iron loss compared to conventional electrical steel sheets, but is expensive). It is desirable to reduce the amount used as much as possible.

そこで、本発明は上記従来技術の欠点に鑑み、巻線が巻
装されない外脚の断面形状を変えることによｐ１電気鋼
板の使用ＭＬを減少できる外鉄影線ｆＪ４鉄心を提供す
ることを目的とする。Therefore, in view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide an outer iron shadow line fJ4 iron core that can reduce the usage ML of P1 electrical steel sheets by changing the cross-sectional shape of the outer legs on which the windings are not wound. shall be.

以下に本発明の実施例を図面に基づいて詳細に説明する
。Embodiments of the present invention will be described in detail below based on the drawings.

本来Ｍ？ｌＪＯ外鉄形段何巻鉄心の平１図および側面図
を第４図（ａ）Φ）に、第４図中）中の、ｌ　　、ｌ断
面４−ｍ５図に、ｙ−ｙＷｒ血を第６図に示す。Originally M? Figure 4 (a) Φ) shows the flat 1 diagram and side view of the JO outer iron type multi-turn core, and the y-yWr blood is shown in Figure 4 (a) Φ), the l, It is shown in Figure 6.

本実施例のＩＡ鉄鉄形段付銑鉄Ｉｂ１１その巻鉄心１２
と１３とが従来の如く単位巻鉄心Ａ、Ｂ。IA iron type stepped pig iron Ib11 of this example, its winding core 12
and 13 are unit winding cores A and B as in the past.

Ｃｔ−内側から外側へ順次巻回して構成したものとはｊ
ｉ４なり、各々別々に巻回して製作された単位銑鉄ｉｕ
ａｍｂ、ｃｓｄｅｅｋｔｌＡａ図（ａ）（ｂ）の如＜　
Ｉ’ｆＡ次積上げて各巻鉄心１２と１３を形成し、これ
らを並置して構成したものである。Ct - What is constructed by sequentially winding from the inside to the outside?
i4, unit pig iron IU manufactured by winding each separately
amb, csdeektlAa as shown in Figures (a) and (b)
The cores 12 and 13 are formed by stacking I'fA layers, and these cores are arranged side by side.

これらの巻鉄心１２．１３の脚部の切断面紘第５図に示
すように、センター脚を構成する一方の脚部が窓内に突
８出す段付きの略半円形に％他方の外脚となる脚部が巻
装される巻線４の外周に沿って凹んだ段付きの略台形に
形成されている０したがって、巻鉄心１２ｔｘｓを並置
するとセンター脚部の切断面は段付きの略円形となる◎
また、ヨーク部は単位巻鉄心ａ、ｂ、ｄ。As shown in FIG. 5, the cut surfaces of the legs of these wound cores 12 and 13 are approximately semicircular with a step where one leg that makes up the center leg protrudes into the window. Therefore, when the wound cores 12txs are placed side by side, the cut surface of the center leg becomes a stepped, approximately circular shape. becomes◎
In addition, the yoke part has unit winding cores a, b, and d.

ｅの脚部を単位巻鉄心ｄの脚部の窓枠寸法と同一に形成
することにより、第６図に示す如く窓内周面が平坦とな
った段付きの略半円形に形成されている。By forming the leg portions of e to have the same dimensions as the window frame dimensions of the leg portions of unit winding core d, the inner circumferential surface of the window is formed into a stepped, approximately semicircular shape with a flat surface, as shown in Fig. 6. .

このような外鉄形段何巻鉄心１１を例えに第１図（ａ）
〜第３図に示す従来例と同一寸法に製作するには、まず
第５図に示す巾ａの電気鋼板を巻回して巻厚ｔの単位巻
鉄心ａとｅを、巾−の電気鋼板で巻厚ｍの単位巻鉄心す
とｄを、巾ｒの電気銅板で巻厚算の単位巻鉄心Ｃを別々
に製作する０この場合、単位巻鉄心ａとｅのヨーク部の
窓枠寸法ｔ、ｕ　ｔｌ＜　Ｌ□に、単位巻鉄心すとｄの
ヨーク部の窓枠寸法４は４〈−に、さらに単位巻鉄心Ｃ
のヨーク部の窓枠寸法ｔ、はｔ３口Ｌ１に夫々設定して
巻回されている。また、単位巻鉄心ａ、ｂ、ｄ、ｅの脚
部の窓枠寸法は単位巻鉄心Ｃと同一寸法に設定されてい
る０ 次にこれらの単位巻鉄心Ｂ−６をｍ４図（ａ）に示す如
くヨーク部の窓内周面を平坦に揃えセンター脚を構成す
る脚部の外＠面を揃えて、単位巻鉄心ａｔ−最下層とし
てす、ｃ、ｄ、ｅの順に積上げて巻鉄心１２と１３を各
々製作する。さらに、巻鉄心１２と１３ｔ−並置してバ
ンド（図示せず）により一体に締付けて外鉄形設付巻鉄
心１１を完成する口したがって、本実施例の外鉄形設付
巻鉄心においては、センター脚の断面形状が従来と同一
な段付の略円形状のまま、外脚の断面形状が巻線の外周
囲に沿う段付の略台形状となると共に、ヨーク部の断面
形状が窓内周面を平坦とし友略台形状となる。その結果
、単位巻鉄心ａ、ｂ、ｄ、ｅの田−り部および脚部の窓
枠寸法が短７０）＜なって従来に比べ磁路長を知かくす
ることがで春る＠ 次に、ｍ２の発明について説明する。第７図。Fig. 1(a) shows an example of such an outer iron type multi-turn core 11.
~In order to manufacture the same dimensions as the conventional example shown in Fig. 3, first wind the electrical steel plate with the width a shown in Fig. 5, and then unit wind cores a and e with the winding thickness t using the electrical steel plate with the width -. A unit winding core with a winding thickness m and a unit winding core C with a winding thickness calculated using an electrolytic copper plate with a width r are manufactured separately. In this case, the window frame dimensions of the yoke part of the unit winding cores a and e are t, u tl< L
The window frame size t of the yoke portion is set at t3 and L1, respectively, and the winding is performed. In addition, the window frame dimensions of the legs of unit-turn cores a, b, d, and e are set to the same dimensions as unit-turn core C. Next, these unit-turn cores B-6 are shown in Figure m4 (a). As shown, the inner circumferential surface of the window of the yoke part is made flat, the outer surfaces of the legs constituting the center leg are made even, and the unit turns of the core at--the bottom layer are stacked in the order of C, D, and E to form the wound core 12. and 13 respectively. Furthermore, the wound cores 12 and 13t are juxtaposed and tightened together with a band (not shown) to complete the outer iron type attached wound core 11. Therefore, in the outer iron type attached wound core of this embodiment, While the cross-sectional shape of the center leg remains the same stepped and approximately circular shape as before, the cross-sectional shape of the outer leg becomes a stepped approximately trapezoidal shape that follows the outer periphery of the winding, and the cross-sectional shape of the yoke portion is set within the window. The circumferential surface is flat and has a roughly trapezoidal shape. As a result, the window frame dimensions of the fields and legs of the unit winding cores a, b, d, and e are shorter than 70), making it possible to make the magnetic path length shorter than before. , m2 invention will be explained. Figure 7.

第８図にその実施例を示す。An example is shown in FIG.

本実施例の外鉄形設や１巻鉄心１１’は詑７図に示す如
く、単位銑鉄心証とｅのヨーク部窓枠寸法ｔ：を４〈−
に、単位巻鉄心すとｄのヨーク部窓枠寸法ｔ２”ｆ：ｔ
２　＜　Ｉ−＋　２に、さらに単位巻鉄心Ｃのヨーク部
窓枠寸法ｔ：　＝＝　Ｌ　１に夫々設定し、外脚の窓内
周面を平坦に揃えて製作したものである。As shown in Figure 7, the outer iron forming and the single-turn iron core 11' of this embodiment have a unit pig iron core diameter and the yoke part window frame dimension t of
, the yoke part window frame dimension of the unit winding core d is t2”f:t
2 < I-+ 2, and the window frame dimension of the yoke part of the unit-turn core C is set to t: == L 1, and the inner peripheral surface of the window of the outer leg is made flat.

尚、センター脚およびヨーク部の断面形状は第８図に示
す如く先の発明の実施例と同形状に形成されている。し
たかつて、本実施例においても従来に比べ磁路長を短か
くすることができる。The cross-sectional shapes of the center leg and the yoke portion are the same as those of the previous embodiment of the invention, as shown in FIG. However, in this embodiment as well, the magnetic path length can be made shorter than in the conventional case.

以上、説明したように本発明の外鉄形設付巻鉄心によれ
ば、巻線を巻装しない外脚の窓内周面を巻線の外周に沿
う段付形状にし、又は平坦に揃えたことにより、各単位
巻鉄心の磁路長を短かくすることができる。また、上下
ヨーク部の窓内周面を平坦にすることができるため、そ
の効果はより増加する。その結果、電気鋼板の使用量を
減少でき、特に非晶質電気鋼板を用いた場合には非常に
経済的に有利となる。さらに、各単位巻鉄心を別々に巻
回して製作できるため、生産性を向上させることができ
る。As explained above, according to the outer iron type installed wound core of the present invention, the window inner peripheral surface of the outer leg where no winding is wound is formed into a stepped shape along the outer periphery of the winding or is arranged flat. By doing so, the magnetic path length of each unit-turn core can be shortened. Moreover, since the inner peripheral surfaces of the windows of the upper and lower yoke parts can be made flat, the effect is further increased. As a result, the amount of electrical steel sheet used can be reduced, which is particularly economically advantageous when amorphous electrical steel sheet is used. Furthermore, since each unit winding core can be manufactured by winding it separately, productivity can be improved.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図（（転）〜第３図は従来例に係り、第１図（ａ）
および（ｂ）は外鉄形設付巻鉄心の平面図および側面図
、第２図、第３図は第１図＜ｂ）中の！−Ｚ。 ｙ−ｙ矢視断面図、第４図（ａ）〜第６図はＭｌの発明
の一実施例に係９、第４図（ａ）　＆↓び（ｂ）は外鉄
形設付巻鉄心の平面図および側面図、第５図。 第６図は第４図Ｃｂ）申のＸ“−，７、ｙｌ　−ｙＩ矢
視断面図、２８７図、第８図は纂２の発明の実施例′を
示す、ｌ　　、１．ｙｌ−ｙｌ矢視ＶＩＩｒ面図である
。 図　　面　　中、 ４は巻−１ １１、１１’は外鉄形Ｍ！付巻銑鉄υ、１２．１３．１
２’、１３’は銑鉄ノυ、ａ　＠　ｂ　＠　Ｃ＠　ｄ　
ａ　ｔは単位巻鉄心でめるＯ％訂出出願 人京電力株１式会社 株式会社高岳製作所 代　　　理　　　人 弁理士光石士部 （他１名） 第１図 （ｂ） 第２図 第３図 第５図 第７図 第８図 １３’Figure 1 ((translation) to Figure 3 relate to the conventional example, and Figure 1 (a)
And (b) is a plan view and a side view of the outer iron type installed wound core, and Figures 2 and 3 are in Figure 1<b)! -Z. y-y arrow sectional views, Figures 4(a) to 6 relate to an embodiment of Ml's invention9, Figures 4(a) & ↓ and (b) are wound cores with outer iron type. FIG. 5 is a plan view and a side view of FIG. Figure 6 is a sectional view taken in the direction of the arrows X"-, 7, yl-yI of Figure 4Cb), Figure 287, and Figure 8 show an embodiment of the invention of Series 2, l, 1.yl-yl It is a side view of arrow VIIr.In the drawing plane, 4 is winding-1, 11, 11' are outer iron type M!Wound pig iron υ, 12.13.1
2' and 13' are pig iron υ, a @ b @ C @ d
a t is O% of unit winding core Applicant: Kyoto Electric Power Company, Inc., Takagaku Seisakusho Co., Ltd. Representative: Patent attorney Shibe Mitsuishi (and 1 other person) Figure 1 (b) Figure 2 Figure 3 Figure 5 Figure 7 Figure 8 Figure 13'

Claims (1)

【特許請求の範囲】 ｌ）巾の異なる電気鋼板を夫々窓枠状に巻回してヨーク
部の窓枠寸法が興なり且つ巾が異なる複数個の単位巻鉄
心を順次積上けて構成すると共に、外脚の窓内周面をセ
ンター脚に巻装嘔れる巻線の外周面に沿わせた段付にし
たことを％徴とするめ鉄形段付巻鉄心。 ２）中の異なる電気銅板を夫々窓枠状に巻回してヨーク
部の窓枠寸法が異なり且つ巾が異なる複数個の単位巻鉄
心を順次積上げて構成すると共に、外脚の断面形状を窓
内周面が平坦となる段付の略台形とした仁とを％徴とす
る外鉄形段何巻鉄心。[Scope of Claims] l) Electrical steel plates of different widths are wound into a window frame shape so that the window frame dimensions of the yoke part are raised, and a plurality of unit winding cores of different widths are sequentially stacked and constructed. A step-wound iron core characterized by the fact that the inner circumferential surface of the window on the outer leg is stepped along the outer circumferential surface of the winding wound around the center leg. 2) The different electrolytic copper plates inside are wound in the shape of a window frame, and a plurality of unit winding cores with different window frame dimensions and widths in the yoke part are stacked one after another. An outer iron-shaped stepped several-turn iron core characterized by a stepped approximately trapezoidal core with a flat circumferential surface.