JPS607112A - Foil wound transformer - Google Patents
Foil wound transformerInfo
- Publication number
- JPS607112A JPS607112A JP58114254A JP11425483A JPS607112A JP S607112 A JPS607112 A JP S607112A JP 58114254 A JP58114254 A JP 58114254A JP 11425483 A JP11425483 A JP 11425483A JP S607112 A JPS607112 A JP S607112A
- Authority
- JP
- Japan
- Prior art keywords
- winding
- tensile force
- foil
- axial direction
- sheet
- 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.)
- Pending
Links
Classifications
-
- 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
- H01F41/04—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 for manufacturing coils
- H01F41/12—Insulating of windings
- H01F41/122—Insulating between turns or between winding layers
-
- 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
- H01F41/04—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 for manufacturing coils
- H01F41/06—Coil winding
- H01F41/061—Winding flat conductive wires or sheets
- H01F41/063—Winding flat conductive wires or sheets with insulation
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Coils Of Transformers For General Uses (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は金属シートと絶縁シートを重ねて巻く箔状の巻
線で、巻線内に冷却ダクトを内蔵する方式の箔巻変圧器
に関する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a foil-wound transformer having a foil-shaped winding formed by overlapping a metal sheet and an insulating sheet and having a cooling duct built into the winding.
箔巻変圧器は巻線の占積率がよいので、小形・軽量化を
実現できる特長がある。すでに数kV数100kVA程
度の比較的電圧の低い小容量の変圧器では実用化されて
いる。Foil-wound transformers have a good winding space factor, so they have the advantage of being smaller and lighter. It has already been put to practical use in small capacity transformers with relatively low voltages of several kV and several hundred kVA.
最近に至り、その優れた長所に鑑み、より高電圧・大容
量の例えば275kV 、 300MVA変圧器に適用
拡大が研究されている。最大の技術的佃題・点はいかに
冷却能力を向上させ、高い絶縁能力を巻線にもたられる
かにかかつている。まだ、このような高電圧大容量変圧
器は実用化はされていないが、すでに公知であるが研究
されている箔巻変圧器は巻線内に冷却ダクトを内蔵させ
、絶縁特性の秀れた冷媒を送り込み、巻線損失から発生
する熱を直接的に冷やす、いわばヒートバイブ式のもの
が考えられる。Recently, in view of its excellent advantages, research has been conducted to expand its application to higher voltage and larger capacity transformers, such as 275 kV and 300 MVA. The biggest technical issue is how to improve cooling capacity and provide high insulation capacity to the windings. Such high-voltage, large-capacity transformers have not yet been put to practical use, but foil-wound transformers, which are already known and are being researched, have cooling ducts built into the windings and have excellent insulation properties. A so-called heat-vib type system is considered, in which a refrigerant is pumped in to directly cool the heat generated from winding loss.
第1図の公知の箔巻変圧器を示す。鉄心1の外側に金属
シート2と絶縁シート3を重ねて、公知の箔巻巻線方式
の低圧巻線4と高圧巻線5を巻き、それら巻線間に環状
の冷却ダクト6を内蔵させる。1 shows the known foil-wound transformer of FIG. 1; A metal sheet 2 and an insulating sheet 3 are stacked on the outside of the iron core 1, and a low voltage winding 4 and a high voltage winding 5 of a known foil winding method are wound, and an annular cooling duct 6 is built in between these windings.
この冷却ダクト6内には、薄い隙間がありフロンR,−
113やFe12といった冷媒15が満されており、ポ
ンプ7により流し、箔巻巻線4.5内の発熱を冷媒の蒸
発潜熱で奪う。その蒸気を凝縮器8で、水冷却9で冷却
して凝縮させるという方式が公知としである。液化した
冷媒を冷媒タンク14に貯め、さらにポンプ7で巻線4
.5内に送り込まれるという冷媒循環冷却回路がとられ
る。すなわちこの冷媒循環回路と変圧器本体とは分離さ
れている。There is a thin gap inside this cooling duct 6, and the fluorocarbon R, -
It is filled with a refrigerant 15 such as 113 or Fe12, which is caused to flow by a pump 7, and the heat generated in the foil-wound winding 4.5 is absorbed by the latent heat of vaporization of the refrigerant. A known method is to cool and condense the steam in a condenser 8 and a water cooler 9. The liquefied refrigerant is stored in the refrigerant tank 14, and then pumped into the winding 4 by the pump 7.
.. A refrigerant circulation cooling circuit is used in which the refrigerant is fed into the tank. That is, this refrigerant circulation circuit and the transformer body are separated.
集液管10はステンレスなど金属で作られているが、そ
れと冷却ダクト6を接続するためには絶縁パイプ11が
用いられ、集液管1oはタンク12などのアース電位を
とる。The liquid collection pipe 10 is made of metal such as stainless steel, and an insulated pipe 11 is used to connect it to the cooling duct 6, and the liquid collection pipe 1o has a ground potential of the tank 12 or the like.
冷却ダクト6の電位は巻線内に巻き込まれている関係上
はぼ巻線4.5と同じ電位に電気的に結合されている。The potential of the cooling duct 6 is electrically coupled to the same potential as the winding 4.5 since it is wound up in the winding.
巻線4.5の絶縁はタンク内に封入された絶縁油あるい
は、SF、ガスといった絶縁媒体13で絶縁されている
。The winding 4.5 is insulated with an insulating medium 13 such as insulating oil, SF, or gas sealed in a tank.
なお、第1図において本発明と直接関係のない巻線のリ
ード線や、それをタンクの外側に引き出すブッシングな
どは省略しである。Incidentally, in FIG. 1, the lead wires of the windings and the bushings that lead the wires out to the outside of the tank, which are not directly related to the present invention, are omitted.
以上説明したように本方式の変圧器は冷却のための冷媒
が流れる循環回路と絶縁のための絶縁媒体13とは完全
に分離(セパレート)されている。As explained above, in the transformer of this system, the circulation circuit through which the refrigerant for cooling flows and the insulating medium 13 for insulation are completely separated.
このことから、この方式の箔巻変圧器はセパレート式箔
巻変圧器と呼ばれる1、
本方式の変転器は冷媒の蒸発潜熱を利用しているので、
優れた冷却特性を期待できるので大容量変圧器には有望
である。しかし、第1図に示すような従来のセパレート
式箔巻変圧器には、次の問題点がある。For this reason, this type of foil-wound transformer is called a separate type foil-wound transformer1.Since this type of transformer uses the latent heat of vaporization of the refrigerant,
It is promising for large-capacity transformers because it can be expected to have excellent cooling characteristics. However, the conventional separate foil-wound transformer as shown in FIG. 1 has the following problems.
前述の如く、低圧巻線4および高圧巻線5は鉄心1を中
心軸として絶縁シート3と金属シート2が交互に重ね巻
きする構成になっているが、軸方向に長尺の箔を巻きつ
けるため、例えばテンションロール(特に図示してない
が径方向に引張り力を与えるもの)で径方向に引張り力
を与えても何層か巻いているうちに軸方向の引張りの均
衡がくずれ部分的にしわが起ってしまい、そのしわが更
にしわを作り径方向の巻付力が弱まる問題があった。As mentioned above, the low-voltage winding 4 and the high-voltage winding 5 are constructed so that the insulating sheets 3 and the metal sheets 2 are alternately wound around the iron core 1, and long foils are wound in the axial direction. Therefore, even if a tensile force is applied in the radial direction using, for example, a tension roll (not shown in the figure, which applies a tensile force in the radial direction), the balance of the tension in the axial direction will partially collapse as the roll is wound in several layers. There is a problem in that wrinkles occur, and the wrinkles create further wrinkles, which weakens the winding force in the radial direction.
また巻線を完了した箔巻巻線は絶縁シート3と金属シー
ト2との間に、しわの発生にともなう空胴部ができて冷
却効率に問題があった。Further, in the foil-wound wire that has been completely wound, a cavity is formed between the insulating sheet 3 and the metal sheet 2 due to the generation of wrinkles, which poses a problem in cooling efficiency.
巻きしわが発生し、径方向の巻付力が弱まると組立工程
中に第1図の如く箔巻巻線を配備すると絶縁シート3と
金属シート2が垂直方向にズレ落ちる可能性があり絶縁
構成上問題になる欠点があった。If winding wrinkles occur and the radial winding force weakens, the insulation sheet 3 and the metal sheet 2 may shift vertically and fall if the foil-wound winding is arranged as shown in Figure 1 during the assembly process. There was a drawback that caused problems.
本発明の目的は以上のような欠点に鑑みなされたもので
冷却効率を低下させる原因となる巻しわをなくした箔巻
変圧器を供給するものである。SUMMARY OF THE INVENTION An object of the present invention is to provide a foil-wound transformer that eliminates winding wrinkles that cause a decrease in cooling efficiency.
この様な目的を達成するために本発明は、絶縁シートと
、金属シートの箔巻工程時に絶縁シートの軸方向端部に
巻しわな防止するための小穴を設けたものである。In order to achieve these objects, the present invention provides an insulating sheet and a small hole provided at the axial end of the insulating sheet to prevent wrinkles during the foil wrapping process of the metal sheet.
以下本発明による一実施例を図面によって説明する。 An embodiment according to the present invention will be described below with reference to the drawings.
第2図に於て2は金属シート、3は絶縁シートで通常は
水平方向に送り巻取って箔巻巻線を構成する。したがっ
て巻取り機等で絶縁シート3と金属シート2を所定のテ
ンションロール等で径方向の引張り力を与えると同時に
、絶縁シート3の軸方向端部に設けた小穴を利用して、
例えば第3図に示すととくのつめ車17等により、軸方
向の引張り力を与えて、巻取時には軸・径方向に引張っ
た状態で巻き付けるようにしである。In FIG. 2, 2 is a metal sheet, and 3 is an insulating sheet, which are usually fed and wound horizontally to form a foil-wound wire. Therefore, while applying tension in the radial direction to the insulating sheet 3 and the metal sheet 2 using a predetermined tension roll or the like using a winding machine or the like, at the same time, using a small hole provided at the axial end of the insulating sheet 3,
For example, as shown in FIG. 3, a special ratchet wheel 17 or the like is used to apply a tensile force in the axial direction so that the material is wound in an axially and radially tensioned state during winding.
第3図の受ロール18は、つめ車17のつめが当る部分
に弾性体を装着しておき、バネ19等で径方向に押し付
けた時出張り部分を吸収するように工夫しである。The receiving roll 18 shown in FIG. 3 is designed so that an elastic body is attached to the part where the pawl of the ratchet wheel 17 comes into contact, so that when it is pressed in the radial direction by a spring 19 or the like, the protruding part is absorbed.
第4図は、第2図を一部変更した変形例であるが小穴の
配置を変え、例えば上・下につめ車を付け、上・下交互
に噛み合うようにしても同様の効果が得られる
〔発明の効果〕
以上説明したように本発明によれば、絶縁シートと金属
シートを重ね巻きした箔巻巻線に於て、軸径方向に引張
り力を与えて巻き取ることにより巻きしわ等が発生ぜず
冷却効率をμ0害することなく、なおかつ箔巻線を垂直
方向に堅てても巻線がズレ落ちることない箔巻変圧器が
提供できる。Figure 4 is a modified example of Figure 2 with some changes, but the same effect can be obtained by changing the arrangement of the small holes, for example by attaching a ratchet wheel at the top and bottom, so that the top and bottom engage alternately. [Effects of the Invention] As explained above, according to the present invention, winding wrinkles, etc. can be prevented by applying tensile force in the radial direction of the shaft and winding the foil-wound wire in which an insulating sheet and a metal sheet are wound in layers. It is possible to provide a foil-wound transformer in which the windings do not shift or fall off even when the foil windings are vertically tightened without damaging the cooling efficiency by μ0.
第1図は、従来の箔巻変圧器の構造を示す断面図、第2
図は本発明の一実施例を示す要部正面図、第3図は第2
図に示すシートを成形する一例を示す要部断面図、第4
図は他の実施例を示す要部正面図である。
1・・・鉄 心 2・・・金属シート
3・・・絶縁シート 4・・・低圧巻線5・・・高圧巻
線 6・・・冷却ダクト7・・・ポンプ 8・・・凝縮
器
9・・・水冷却 10・・・集液管
11・・・絶縁バイブ 12・・・タンク13・・・絶
縁媒体 14・・・冷媒タンク15・・・冷 媒 16
・・・小 穴
17・・・つめ車 18・・・受ロール19・・・バネ
代理人 弁理士 則 近 慧 佑(ばか1名)第1図Figure 1 is a sectional view showing the structure of a conventional foil-wound transformer;
The figure is a front view of main parts showing one embodiment of the present invention, and FIG.
A cross-sectional view of main parts showing an example of forming the sheet shown in the figure, No. 4
The figure is a front view of main parts showing another embodiment. 1... Iron core 2... Metal sheet 3... Insulating sheet 4... Low voltage winding 5... High voltage winding 6... Cooling duct 7... Pump 8... Condenser 9 ... Water cooling 10 ... Liquid collection pipe 11 ... Insulating vibrator 12 ... Tank 13 ... Insulating medium 14 ... Refrigerant tank 15 ... Refrigerant 16
... Small hole 17 ... Pawl wheel 18 ... Receiving roll 19 ... Spring agent Patent attorney Nori Kei Chika (1 idiot) Figure 1
Claims (1)
と高圧巻線を巻きそれらの巻線間に冷却ダクトを内蔵さ
せた箔巻変圧器に於て、絶縁シートの軸方向の端部に連
続的に小穴を設けその小穴につめ車を挿入し軸方向へ引
張り力を与えながら巻き締めた巻線を装備したことを特
徴とした箔巻変圧器。In a foil-wound transformer, a metal sheet and an insulating sheet are layered around the outer circumference of an iron core, and a low-voltage winding and a high-voltage winding are wound around the core, and a cooling duct is built in between the windings. A foil-wound transformer is characterized by having a continuous small hole, a ratchet wheel inserted into the small hole, and equipped with a winding that is tightened while applying a tensile force in the axial direction.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58114254A JPS607112A (en) | 1983-06-27 | 1983-06-27 | Foil wound transformer |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP58114254A JPS607112A (en) | 1983-06-27 | 1983-06-27 | Foil wound transformer |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS607112A true JPS607112A (en) | 1985-01-14 |
Family
ID=14633171
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP58114254A Pending JPS607112A (en) | 1983-06-27 | 1983-06-27 | Foil wound transformer |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS607112A (en) |
-
1983
- 1983-06-27 JP JP58114254A patent/JPS607112A/en active Pending
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