JPS62244113A - Separate type foil-wound transformer core - Google Patents
Separate type foil-wound transformer coreInfo
- Publication number
- JPS62244113A JPS62244113A JP8700486A JP8700486A JPS62244113A JP S62244113 A JPS62244113 A JP S62244113A JP 8700486 A JP8700486 A JP 8700486A JP 8700486 A JP8700486 A JP 8700486A JP S62244113 A JPS62244113 A JP S62244113A
- Authority
- JP
- Japan
- Prior art keywords
- core
- cooling
- cooling panels
- iron core
- insulating
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000001816 cooling Methods 0.000 claims abstract description 38
- 239000002826 coolant Substances 0.000 claims description 2
- 239000012212 insulator Substances 0.000 abstract description 4
- 239000011295 pitch Substances 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 28
- 238000004804 winding Methods 0.000 description 18
- 239000003507 refrigerant Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004020 conductor Substances 0.000 description 3
- 230000020169 heat generation Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- AJDIZQLSFPQPEY-UHFFFAOYSA-N 1,1,2-Trichlorotrifluoroethane Chemical compound FC(F)(Cl)C(F)(Cl)Cl AJDIZQLSFPQPEY-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- FYJQJMIEZVMYSD-UHFFFAOYSA-N perfluoro-2-butyltetrahydrofuran Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)C1(F)OC(F)(F)C(F)(F)C1(F)F FYJQJMIEZVMYSD-UHFFFAOYSA-N 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
Landscapes
- Coils Of Transformers For General Uses (AREA)
- Transformer Cooling (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、絶縁媒体と冷却媒体の機能を各々独立させた
セパレート式箔巻変圧器に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a separate foil-wound transformer in which the functions of an insulating medium and a cooling medium are made independent of each other.
（従来の技術）
鉄心脚の周囲に金属シートと絶縁シートを重ねて巻回し
て箔状巻線を構成した箔巻変圧器は、巻装導体の占積率
が良いので通常の平角線状の導体を用いた変圧器と比較
して小形・軽量化に適した特徴を有している。(Prior art) A foil-wound transformer, which has a foil winding formed by overlapping metal sheets and insulating sheets wound around the core leg, has a good space factor for the wound conductor, so it can be used as an ordinary rectangular wire. It has the characteristics of being smaller and lighter than transformers using conductors.
しかし、より高電圧・大容量の変圧器を実現させるため
には、巻線に対する冷却能率を更に向上させると同時に
鉄心の冷却能率を向上させる事が不可欠になっている。However, in order to realize higher-voltage, larger-capacity transformers, it is essential to further improve the cooling efficiency of the windings and at the same time improve the cooling efficiency of the iron core.
このため、巻線や、鉄心内に冷媒の流通する冷却パネル
を内蔵させ巻線や鉄心で発生する熱を直接的に冷却する
よう構成することが考えられている。第２図に、この様
な方式の箔巻変圧器として従来から知られているものの
一例を示す。For this reason, it has been considered to have a structure in which a cooling panel through which a refrigerant flows is built into the windings and the iron core to directly cool the heat generated in the windings and the iron core. FIG. 2 shows an example of a conventionally known foil-wound transformer of this type.
同図において、タンク１には、絶縁媒体として絶縁油或
いはＳＦ、ガス等の絶縁ガスが封入され、このタンク１
の内部には鉄心２が設けられている。In the figure, a tank 1 is filled with an insulating gas such as insulating oil, SF, or gas as an insulating medium.
An iron core 2 is provided inside.
この鉄心２の主脚２ａの外側には、絶縁筒３を介して低
圧巻線４が巻装され、この低圧巻線４の外側には、絶縁
バリヤ６を介して高圧巻線５が巻装されている。これら
低圧巻線４及び高圧巻［５は、アルミニウム箔等から成
る金属シート７と樹脂フィルム等から成る絶縁シート８
を重ねて巻回して成る箔状巻線にて構成されている。な
お、各巻線４．５はタンク１内に封入された絶縁媒体に
より絶縁されている。また、低圧及び高圧巻線４，５に
は、その軸方向に延びる冷却ダク１−９が巻き込まれて
内蔵されている。A low voltage winding 4 is wound on the outside of the main leg 2a of the iron core 2 via an insulating tube 3, and a high voltage winding 5 is wound on the outside of this low voltage winding 4 via an insulating barrier 6. has been done. These low voltage winding 4 and high voltage winding [5 are a metal sheet 7 made of aluminum foil etc. and an insulating sheet 8 made of resin film etc.
It is made up of foil-like windings made by overlapping and winding. Note that each winding 4.5 is insulated by an insulating medium sealed in the tank 1. Furthermore, a cooling duct 1-9 extending in the axial direction is wound around and built into the low-voltage and high-voltage windings 4 and 5.
一方鉄心２には、抜板１６の積層方向に合せて冷却パネ
ル１０が内蔵されている。冷却パネル９およびＩＯ内に
は、フロン１１３やフロリナートＦＣ７５等の冷媒が通
る様中空になっており、この冷媒は、冷却パネル９およ
び１０内を通る過程で巻線４，５および鉄心２を冷却す
る。そしてこの冷媒はタンク１外部に設けた、冷却器１
１で冷却され再度冷却パネル９および１０に送り込まれ
る。On the other hand, a cooling panel 10 is built into the iron core 2 in alignment with the stacking direction of the punched plates 16. The cooling panels 9 and IO are hollow so that a refrigerant such as Freon 113 or Fluorinert FC75 can pass therethrough, and this refrigerant cools the windings 4 and 5 and the iron core 2 in the process of passing through the cooling panels 9 and 10. do. This refrigerant is supplied to a cooler 1 installed outside the tank 1.
1 and sent to cooling panels 9 and 10 again.
以上説明した箔巻変圧器は、冷媒の循環する冷却系と巻
線を司る絶縁媒体による絶縁系に完全に分離されている
ことから、一般にセパレート式箔巻変圧器と呼ばれてお
り、従来の平角線状の導体を使用した変圧器に比較し、
大幅な小型・軽量化が可能で、絶縁信頼性が高い等の利
点を有している。The foil-wound transformer described above is generally called a separate foil-wound transformer because it is completely separated into a cooling system where refrigerant circulates and an insulation system where an insulating medium controls the windings. Compared to transformers that use rectangular wire conductors,
It has advantages such as being able to be significantly reduced in size and weight, and having high insulation reliability.
（発明が解決しようとする問題点）
ところで、この種の箔巻変圧器の鉄心においては、冷却
パネル１０が熱電達率の良い金属で構成されており、こ
の冷却パネル１０を第３図に示すように配置した場合、
鉄心２を構成する抜板１６が切断部のかえりあるいは、
切断による表面の絶縁性被膜の破損により、抜板１６の
端部やレグ抜板とヨーク抜板の接合部において、接触も
しくは不完全接触状態になりやすい。従って、鉄心２内
を通る磁束４によって、鉄心２全体を一閃回路とする循
環電流ＩＩ＋が流れる。(Problems to be Solved by the Invention) Incidentally, in the iron core of this type of foil-wound transformer, the cooling panel 10 is made of a metal with a good heat transfer rate, and this cooling panel 10 is shown in FIG. If arranged like this,
The punched plate 16 constituting the iron core 2 is the burr of the cut part or
Due to damage to the insulating coating on the surface due to cutting, contact or incomplete contact is likely to occur at the end of the punched plate 16 or at the joint between the leg punched plate and the yoke punched plate. Therefore, due to the magnetic flux 4 passing through the core 2, a circulating current II+ flows through the entire core 2 as a flash circuit.
この循環電流■。は、鉄心２の鉄損を増加させるだけで
なく、鉄心２の局部過熱を生じ、抜板１６の焼損、絶縁
媒体を含む他の構成物に悪い影響を与える懸念があった
。This circulating current■. This not only increases the iron loss of the iron core 2, but also causes local overheating of the iron core 2, which may cause burnout of the punched plate 16 and adversely affect other components including the insulating medium.
特に大容量器では、鉄心サイズが大きくなるため、この
循環電流は、注意を要する値となる。Particularly in large-capacity containers, the iron core size becomes large, so this circulating current becomes a value that requires caution.
なお、抜板製作のコスト上、抜板自体で循環電流を完全
に防止する事は非常に不経済になる。In addition, due to the cost of manufacturing the punched board, it is very uneconomical to completely prevent the circulating current by the punching itself.
本発明は、上記の事情を考慮してなされたものであり、
その目的は鉄心２の冷媒による冷却能率を低下させるこ
となく、抜板１６を介して流れる循環電流工を小さくす
ることによって、低損失で信頼性の高いセパレート式箔
巻変圧器鉄心を提供することにある。The present invention has been made in consideration of the above circumstances,
The purpose is to provide a separate foil-wound transformer core with low loss and high reliability by reducing the amount of circulating current flowing through the punched plate 16 without reducing the cooling efficiency of the core 2 with the refrigerant. It is in.
（問題点を解決するための手段および作用）本発明のセ
パレート式箔巻変圧器鉄心は、冷却パネル１０から離れ
た位置または冷却パネル間の抜板中間位置に絶縁層を配
置して、鉄心２の循環電流■。の大きさを低減するよう
にしたものである。(Means and effects for solving the problems) The separate foil-wound transformer core of the present invention has an insulating layer disposed at a position away from the cooling panel 10 or at an intermediate position between the cooling panels. ■ Circulating current. This is to reduce the size of.
（実施例） 本発明の一実施例を第１図をもって説明する。(Example) An embodiment of the present invention will be described with reference to FIG.
本実施例の鉄心２の冷却パネル１０は、鉄心２の発熱量
と冷却パネル１０の能力から、適当なピッチＰで挿入さ
れている。さらにこの冷却パネル１０で分割された抜板
１６の積み厚のほぼ中間には、絶縁物からなる絶縁［１
７ａが、挿入されている。場合によっては、冷却パネル
１０より外側にも同様に絶縁層１７ｂが挿入されている
。The cooling panels 10 of the iron core 2 of this embodiment are inserted at an appropriate pitch P based on the calorific value of the iron core 2 and the capacity of the cooling panels 10. Furthermore, an insulating material [1
7a is inserted. In some cases, an insulating layer 17b is similarly inserted outside the cooling panel 10.
上記の様に構成された鉄心２は、分散された絶縁層１７
ａ、 １７ｂにより抜板１６および冷却パネル１０を介
する循環電流１１〜Ｉ、は、従来のＩ。に比較し、抑制
され、許容値以下に低減することが出来る。The iron core 2 configured as described above has a distributed insulating layer 17
The circulating currents 11-I, through the punched plate 16 and the cooling panel 10 by a, 17b are the same as those of the conventional I. compared to , it can be suppressed and reduced to below the allowable value.
従って、循環電流が抑制された事により、（１）鉄心の
損失が低減する。Therefore, by suppressing the circulating current, (1) core loss is reduced.
■ 循環電流Ｉ、〜Ｉ、による発熱量が低減し、局部加
熱を防止できる。ひいては、従来懸念された抜板１６の
焼損や他の構成物への影響がなくなる。(2) The amount of heat generated by the circulating currents I, ~I is reduced, and local heating can be prevented. As a result, the burnout of the punched board 16 and the effects on other components, which were concerns in the past, are eliminated.
一方、挿入された絶縁層１７ａが、冷却パネルｌＯの中
間位置に配置されていＱので、熱電達率の悪い絶縁物か
らなる絶縁層１７ａが冷却パネル１０の冷却効果を妨げ
ない。これは、冷却パネル１０の守備範囲である積み厚
Ｑ内には、絶縁物よりはるかに熱伝達の良い抜板１６と
金属製の冷却パネル１０が存在するのみであるからであ
る。On the other hand, since the inserted insulating layer 17a is disposed at an intermediate position Q of the cooling panel IO, the insulating layer 17a made of an insulator with poor heat transfer rate does not impede the cooling effect of the cooling panel 10. This is because within the stacking thickness Q, which is the coverage range of the cooling panel 10, only the punched plate 16 and the metal cooling panel 10, which have much better heat transfer than an insulator, exist.
また、絶縁層１７ｂの場合は、この絶縁層より外側の抜
板の幅が小さくなり、端部からの放熱が良い事を勘案し
て位置設定されており鉄心発熱上の問題はない。Further, in the case of the insulating layer 17b, the width of the punched plate outside the insulating layer is small, and the position is set taking into consideration that heat radiation from the end is good, so there is no problem with heat generation of the iron core.
さらに、絶縁層１７ａ、 １７ｂの両側は、抜板が直接
接するために、表面が平滑であり、絶縁層１７ａ。Further, both sides of the insulating layers 17a and 17b have smooth surfaces because the punched plates are in direct contact with each other.
１７ｂの厚さを数ｍにしておけば循環電流工、〜Ｉ。If the thickness of 17b is set to several meters, a circulating electric current works ~I.
の電圧は十分絶縁され、その材質選定にも自由度が高い
。絶縁層＋７ａ、 １７ｂで仕切られた抜板は、最終的
には一点接地する必要があるが、冷却パネル１０の導液
配管１８を利用して、実施できる。The voltage is sufficiently insulated, and there is a high degree of freedom in selecting the material. Although the punching partitioned by the insulating layers +7a and 17b ultimately needs to be grounded at one point, it can be performed using the liquid guide pipe 18 of the cooling panel 10.
以上では、絶縁層１７ａ、 １７ｂは、絶縁物としであ
るが、従来の浦入り変圧器で使用されていたベンチレー
タシート（油を流して鉄心の発熱を抑制していた鉄心の
中間ダクト）を使用して、絶縁媒体の流路として鉄心的
発熱の冷却に寄与させる事も、その機能、効果は同様で
ある。In the above, the insulating layers 17a and 17b are made of insulators, but a ventilator sheet (an intermediate duct of the iron core in which oil is poured to suppress the heat generation of the iron core) used in a conventional transformer is used. The function and effect of contributing to the cooling of iron core heat generation as a flow path for an insulating medium are also the same.
以上の様に本発明によれば、鉄心の循環電流を抑制し、
かつ鉄心冷却パネルの機能が十分発揮される低損失で、
信頼性の高いセパレート式箔巻変圧器鉄心を得ることが
できる。As described above, according to the present invention, circulating current in the iron core is suppressed,
And with low loss that fully demonstrates the function of the core cooling panel,
A highly reliable separate foil-wound transformer core can be obtained.
第１図は１本発明のセパレート式箔巻変圧器の構成例を
示す鉄心断面図、第２図は従来のセパレート式箔巻変圧
器の一例を示す縦断面図、第３図は同じく、従来のセパ
レート式箔巻変圧器の鉄心を構成例を示す鉄心断面図で
ある。
１・・・タンク ２・・・鉄心３・・・絶縁
筒 ４・・・低圧巻線５・・、高圧巻線
６・・・絶縁バリア７・・・金属シート
８・・・Ｉ８緑シート９・・・巻線用冷却パネル １０
・・・鉄心用冷却パネル１１・・・冷却器
１２・・・ポンプ１３・・・導液管 １４・
・・絶縁パイプ１５・・・ポンプ １６・・
・抜板１７ａ、１７ｂ・・・絶縁層 １８・・・導
液配管代理人 弁理士 則 近 憲 佑
同 三俣弘文
第 １ 図
第 ３ 図
第 ２ 図FIG. 1 is a cross-sectional view of an iron core showing an example of the configuration of a separate foil-wound transformer according to the present invention, FIG. 2 is a longitudinal cross-sectional view showing an example of a conventional separate foil-wound transformer, and FIG. FIG. 3 is a sectional view of an iron core showing an example of the configuration of the iron core of a separate foil-wound transformer. 1...tank 2...iron core 3...insulation tube 4...low voltage winding 5..., high voltage winding
6... Insulating barrier 7... Metal sheet
8... I8 green sheet 9... Cooling panel for winding 10
... Iron core cooling panel 11 ... Cooler
12...Pump 13...Liquid guide pipe 14.
...Insulated pipe 15...Pump 16...
- Cutting plates 17a, 17b...Insulating layer 18...Liquid guide piping agent Patent attorney Norihiro Chika Ken Yudo Hirofumi Mitsumata Figure 1 Figure 3 Figure 2
Claims (1)
器でその鉄心に冷却を流す冷却パネルを設けたものにお
いて、冷却パネルと離れた位置の鉄心に絶縁物シートを
介在させた事を特徴とするセパレート式箔巻変圧器鉄心
。A separate foil-wound transformer that uses an insulating medium and a cooling medium and is equipped with a cooling panel that allows cooling to flow through the core, characterized in that an insulating sheet is interposed in the core located away from the cooling panel. Separate foil-wound transformer core.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8700486A JPS62244113A (en) | 1986-04-17 | 1986-04-17 | Separate type foil-wound transformer core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8700486A JPS62244113A (en) | 1986-04-17 | 1986-04-17 | Separate type foil-wound transformer core |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62244113A true JPS62244113A (en) | 1987-10-24 |
| JPH0556842B2 JPH0556842B2 (en) | 1993-08-20 |
Family
ID=13902758
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8700486A Granted JPS62244113A (en) | 1986-04-17 | 1986-04-17 | Separate type foil-wound transformer core |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62244113A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11404196B2 (en) * | 2016-11-09 | 2022-08-02 | Siemens Energy Global GmbH & Co. KG | Core for an electrical induction device |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101663682B1 (en) * | 2014-11-03 | 2016-10-07 | (주)바텍이우홀딩스 | X-ray imaging apparatus |
-
1986
- 1986-04-17 JP JP8700486A patent/JPS62244113A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11404196B2 (en) * | 2016-11-09 | 2022-08-02 | Siemens Energy Global GmbH & Co. KG | Core for an electrical induction device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0556842B2 (en) | 1993-08-20 |
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