JPH0556842B2 - - Google Patents
Info
- Publication number
- JPH0556842B2 JPH0556842B2 JP8700486A JP8700486A JPH0556842B2 JP H0556842 B2 JPH0556842 B2 JP H0556842B2 JP 8700486 A JP8700486 A JP 8700486A JP 8700486 A JP8700486 A JP 8700486A JP H0556842 B2 JPH0556842 B2 JP H0556842B2
- Authority
- JP
- Japan
- Prior art keywords
- iron core
- insulating
- cooling
- cooling panel
- core
- 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.)
- Expired - Lifetime
Links
- 238000001816 cooling Methods 0.000 claims description 31
- 239000002826 coolant Substances 0.000 claims description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 27
- 238000004804 winding Methods 0.000 description 19
- 239000003507 refrigerant Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 238000009413 insulation Methods 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
- 239000007788 liquid Substances 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000012212 insulator Substances 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
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- RVZRBWKZFJCCIB-UHFFFAOYSA-N perfluorotributylamine Chemical compound FC(F)(F)C(F)(F)C(F)(F)C(F)(F)N(C(F)(F)C(F)(F)C(F)(F)C(F)(F)F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F RVZRBWKZFJCCIB-UHFFFAOYSA-N 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)
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
線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 technology) A foil-wound transformer, which has a foil winding formed by overlapping metal sheets and insulating sheets wound around a core leg, has a good space factor for the winding conductor, so it is not as good as a normal 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
不可欠になつている。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。 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. 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SF6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。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及び高圧巻線
５は、アルミニウム箔等から成る金属シート７と
樹脂フイ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ト９が
巻き込まれて内蔵されている。 In the figure, a tank 1 is filled with an insulating gas such as insulating oil or SF 6 gas as an insulating medium.
An iron core 2 is provided inside this tank 1. An insulating cylinder 3 is provided on the outside of the main leg 2a of this iron core 2.
A low voltage winding 4 is wound through the low voltage winding 4.
A high-voltage winding 5 is wound on the outside of the coil with an insulating barrier 6 interposed therebetween. These low-voltage windings 4 and high-voltage windings 5 are constituted by foil-like windings formed by overlapping and winding a metal sheet 7 made of aluminum foil or the like and an insulating sheet 8 made of resin film or the like. In addition,
Each winding 4, 5 is insulated by an insulating medium enclosed within the tank 1. Furthermore, a cooling duct 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１０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つており、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１１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. cooling panel 9
and 10 contains Freon 113 and Fluorinert.
It is hollow so that a refrigerant such as FC75 can pass therethrough, and this refrigerant cools the windings 4 and 5 and the iron core 2 as it passes through the cooling panels 9 and 10. This refrigerant is then cooled by a cooler 11 provided outside the tank 1 and sent to the 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
却系と巻線の絶縁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 in which the refrigerant circulates and an insulation system using an insulating medium that insulates the windings. Significantly smaller and smaller than conventional transformers using rectangular wire conductors.
It has advantages such as being lightweight and having high insulation reliability.
（発明が解決しようとする問題点）
ところで、この主の箔巻変圧器の鉄心において
は、冷却パネル１０が熱伝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。従つて、鉄心２内
を通る磁束４によつて、鉄心２全体を一閉回路と
する循環電流I0が流れる。(Problems to be Solved by the Invention) By the way, in the iron core of this main foil-wound transformer, the cooling panel 10 is made of a metal with good heat transfer coefficient, and this cooling panel 10 is shown in FIG. When arranged as shown in FIG.
However, due to burrs at the cut portion or 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 iron core 2, a circulating current I0 flows through the entire iron core 2 as a closed circuit.
この循環電流I0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
与える懸念があつた。 This circulating current I 0 not only increases the iron loss of the iron core 2 but also causes local overheating of the iron core 2 and
There were concerns that this would cause burnout 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
循環電流を小さくすることによつて、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, and its purpose is to reduce the circulating current flowing through the punched plate 16 without reducing the cooling efficiency of the iron core 2 by the refrigerant. The purpose of the present invention is to provide a separate foil-wound transformer core with low loss and high reliability.
（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
パネルで分割された鉄心の中間に絶縁シートを介
在させて、鉄心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 reduces the magnitude of circulating current in the core by interposing an insulating sheet between the cores divided by cooling panels. It was designed to do so.
（実施例） 本発明の一実施例を第１図をもつて説明する。(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
ツチ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層１７ａが、挿入されて
いる。場合によつては、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 panel 10 for the iron core 2 of this embodiment is
They are inserted at an appropriate pitch P based on the amount of heat generated by the cooling panel 10 and the capacity of the cooling panel 10. Further, an insulating layer 17a made of an insulating material is inserted approximately in the middle of the stacked thickness of the blanks 16 divided by this cooling panel 10. 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１７ａ，１７ｂにより抜板１６および冷却パ
ネル１０を介する循環電流I1〜I5は、従来のI0に
比較し、抑制され、許容値以下に低減することが
出来る。従つて、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。 In the iron core 2 configured as described above, the circulating currents I 1 to I 5 through the punched plate 16 and the cooling panel 10 are suppressed and allowed by the distributed insulating layers 17a and 17b compared to the conventional I 0 . It can be reduced below the value. Therefore, by suppressing the circulating current, (1) core loss is reduced.
(2) 循環電流I1〜I5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 1 to I 5 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
１０の中間位置に配置されているので、熱伝達率
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 of the cooling panel 10, the insulating layer 17a made of an insulating material with poor heat transfer coefficient 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，１７ｂの厚さを数mmにしておけば循環電
流I1〜I5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１７ａ，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。 Furthermore, both sides of the insulating layers 17a and 17b have smooth surfaces because the punched plates are in direct contact with each other, and if the thickness of the insulating layers 17a and 17b is set to several mm, the voltage of the circulating currents I 1 to I 5 can be reduced. It is well insulated and has a high degree of freedom in material selection. The punched board partitioned by the insulating layers 17a and 17b must ultimately be grounded at one point, but by using the liquid guide pipe 18 of the cooling panel 10,
Can be implemented.
以上では、絶縁層１７ａ，１７ｂは、絶縁物と
してあるが、従来の油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内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 description, the insulating layers 17a and 17b are insulators, but the ventilator sheets used in conventional oil-filled transformers (intermediate ducts of the iron core that suppress heat generation of the iron core by flowing oil) are used. The function and effect are the same when it is used as a flow path for an insulating medium to contribute to cooling the heat generated within the iron core.
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, it is possible to obtain a low-loss, highly reliable separate foil-wound transformer core that suppresses the circulating current of the core and fully exhibits the function of the core cooling panel.
第１図は、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……絶縁シート、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。
FIG. 1 is a sectional view of an iron core showing an example of the configuration of a separate foil-wound transformer of the present invention, FIG. 2 is a longitudinal 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...Insulation barrier, 7...Metal sheet, 8...Insulation sheet, 9...
...Winding cooling panel, 10... Iron core cooling panel, 11... Cooler, 12... Pump, 13...
Liquid guide pipe, 14...Insulated pipe, 15...Pump,
16...Punching, 17a, 17b...Insulating layer, 18
...Liquid guiding piping.
Claims (1)
箔巻変圧器でその鉄心に冷媒を流す冷却パネルを
設けたものにおいて、冷却パネルで分割された鉄
心の中間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。1. In a separate foil-wound transformer that uses an insulating medium and a cooling medium, and is equipped with a cooling panel that allows the coolant to flow through the core, the feature is that an insulating sheet is interposed between the cores that are divided by 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 JPS62244113A (en) | 1987-10-24 |
| JPH0556842B2 true 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 |
|---|---|---|---|---|
| KR20160051448A (en) * | 2014-11-03 | 2016-05-11 | (주)바텍이우홀딩스 | X-ray imaging apparatus |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102016221992A1 (en) * | 2016-11-09 | 2018-05-09 | Siemens Aktiengesellschaft | Core for an electrical induction device |
-
1986
- 1986-04-17 JP JP8700486A patent/JPS62244113A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20160051448A (en) * | 2014-11-03 | 2016-05-11 | (주)바텍이우홀딩스 | X-ray imaging apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS62244113A (en) | 1987-10-24 |
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