JPH06112059A - Stationary induction equipment - Google Patents
Stationary induction equipmentInfo
- Publication number
- JPH06112059A JPH06112059A JP4259696A JP25969692A JPH06112059A JP H06112059 A JPH06112059 A JP H06112059A JP 4259696 A JP4259696 A JP 4259696A JP 25969692 A JP25969692 A JP 25969692A JP H06112059 A JPH06112059 A JP H06112059A
- Authority
- JP
- Japan
- Prior art keywords
- tank
- magnetic shield
- magnetic shielding
- shielding block
- block
- 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
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Landscapes
- Regulation Of General Use Transformers (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は変圧器やリアクトル等の
静止誘導電器に関するもので、特に電器中身より発生す
る漏洩磁束が電器中身を収納するタンクに侵入するのを
遮へいする磁気シールドに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a static induction electric device such as a transformer or a reactor, and more particularly to a magnetic shield for preventing leakage of magnetic flux generated from the contents of an electric device from entering a tank containing the electric device. is there.
【０００２】[0002]
【従来の技術】磁気シールドは静止誘導電器の巻線を流
れる電流により生ずる漏洩磁束が分散して静止誘導電器
のタンクを磁路の一部として流れるのを防ぐ役割として
設けられ、これにより漏洩磁束による損失を低減させ、
タンクの局部加熱の発生を無くすことができる。従来は
図３に示すように、タンク３内面に複数個の磁気シール
ドブロック４を配設し、磁気シールドとする構造であ
る。すなわち、鉄心１とこれに巻装された巻線２、これ
ら電器中身を収納するタンク３、タンク３の内面に取り
付けられた磁気シールドブロック４からなる。2. Description of the Related Art A magnetic shield is provided to prevent leakage flux generated by a current flowing through a winding of a static induction electric device from being dispersed and flowing through a tank of the static induction electric device as a part of a magnetic path. Reduce the loss due to
The occurrence of local heating of the tank can be eliminated. Conventionally, as shown in FIG. 3, a plurality of magnetic shield blocks 4 are arranged on the inner surface of the tank 3 to form a magnetic shield. That is, it comprises an iron core 1, a winding 2 wound around the iron core 1, a tank 3 for storing the contents of these electric appliances, and a magnetic shield block 4 attached to the inner surface of the tank 3.
【０００３】このように構成された静止誘導電器におけ
る磁気シールドブロック４の、従来の取付方を図４に示
す。図４に示すように、磁気シールドブロック４は通
常、複数枚のけい素鋼板を積層、接着して断面矩形の短
冊状に形成される。この磁気シールドブロック４を図示
しないが、タンク３の内壁に溶接されたつめにより固定
し、これを必要数、必要な間隔寸法を設けてタンク３の
内面に取付けている。FIG. 4 shows a conventional mounting method of the magnetic shield block 4 in the static induction electric device configured as described above. As shown in FIG. 4, the magnetic shield block 4 is usually formed in a strip shape having a rectangular cross section by laminating and bonding a plurality of silicon steel sheets. Although not shown, the magnetic shield block 4 is fixed to the inner wall of the tank 3 by a welded claw, and the magnetic shield block 4 is attached to the inner surface of the tank 3 with a required number and a required space dimension.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、磁気シ
ールドは一般に巻線２の高圧充電部と対向して設けら
れ、各磁気シールドブロック４間は取付けに必要な間隔
が空いているために、磁気シールドブロック４の矩形断
面の両側端の角部に電界が集中する。従って、この電界
集中部より絶縁破壊を生じないようにするために、高圧
充電部と磁気シールドの接地電位部との間の絶縁距離を
十分に確保するため、タンク３の幅寸法を大きくする必
要があるし、タンク３の幅寸法を大きくしないまでも磁
気シールドの表面をプレスボードバーリヤまたは、絶縁
紙の間に電極を埋め込んだ電界緩和シールド７等で保護
するようにし、このバーリヤを固定するための座８をタ
ンク３の内壁に溶接し、絶縁ボルト９、絶縁ナット１０
で締付固定する構造とする必要があった。However, since the magnetic shield is generally provided so as to face the high voltage charging portion of the winding 2, and the magnetic shield blocks 4 have a space necessary for mounting, the magnetic shield is not provided. The electric field concentrates on the corners at both ends of the rectangular cross section of the block 4. Therefore, in order to prevent insulation breakdown from the electric field concentration portion, it is necessary to increase the width dimension of the tank 3 in order to secure a sufficient insulation distance between the high voltage charging portion and the ground potential portion of the magnetic shield. Even if the width of the tank 3 is not increased, the surface of the magnetic shield is protected by a pressboard barrier or an electric field mitigation shield 7 having an electrode embedded between insulating papers to fix the barrier. Welding the seat 8 to the inner wall of the tank 3, the insulating bolt 9, the insulating nut 10
It was necessary to secure the structure by tightening with.
【０００５】本発明は上記の点を考慮してなされたもの
で、その目的は磁気シールドブロック両側端角部の電界
集中を低減し、高電圧充電部と磁気シールドとの間の絶
縁距離を縮小し、タンクの幅寸法を小さくし、磁気シー
ルドの表面を保護するバーリヤ取付を不要とした静止誘
導電気機器を得ることにある。The present invention has been made in consideration of the above points, and an object thereof is to reduce electric field concentration at both end corners of the magnetic shield block and to reduce the insulation distance between the high voltage charging section and the magnetic shield. However, it is to obtain a static induction electric device in which the width of the tank is reduced and the barrier mounting for protecting the surface of the magnetic shield is unnecessary.
【０００６】[0006]
【課題を解決するための手段】本発明は静止誘導電器中
身を収納するタンク内面に磁気シールドブロックを複数
個取り付ける際、磁気シールドブロックの厚さより外径
の大きい絶縁リードを、各磁気シールドブロックの長手
方向２面、短手方向１面を連続して囲むように配置し、
かつ絶縁リードの一端を電気的にタンクに接続したこと
を特徴とする。According to the present invention, when a plurality of magnetic shield blocks are mounted on the inner surface of a tank for housing the contents of a static induction electric device, an insulating lead having an outer diameter larger than the thickness of the magnetic shield block is attached to each magnetic shield block. Arranged so as to continuously surround two surfaces in the longitudinal direction and one surface in the lateral direction,
Moreover, one end of the insulating lead is electrically connected to the tank.
【０００７】[0007]
【作用】前述のように構成することにより、電界集中を
生じていた磁気シールドブロックの角部が、絶縁リード
によりシールド保護されるため電界集中を低減すること
が出来、また絶縁リードの一端を電気的にタンクに接続
することにより、閉回路に発生する循環電流による損失
発生、及び過熱を無くすことが出来る。With the above-described structure, the corners of the magnetic shield block, which had generated electric field concentration, are shielded and protected by the insulating lead, so that the electric field concentration can be reduced, and one end of the insulating lead is electrically connected. By connecting the tank to the tank, loss due to the circulating current generated in the closed circuit and overheating can be eliminated.
【０００８】[0008]
【実施例】以下本発明の実施例を図１、図２、図３を用
いて説明する。Embodiments of the present invention will be described below with reference to FIGS. 1, 2 and 3.
【０００９】図３において、鉄心１とこれに巻装された
巻線２、これら電器中身を収納するタンク３、タンク３
の内面に間かくを置いて取り付けられた複数個の複数枚
のけい素鋼板を積層して形成された断面矩形の短冊状の
磁気シールドブロック４であり、従来構造と同じであ
る。本発明では図１に示すように絶縁リード５を各磁気
シールドブロック４の３面を囲むように配置し、一端を
電気的にタンク３に接続する。図２は、絶縁リード５と
磁気シールドブロック４との取付断面を示す図である。In FIG. 3, an iron core 1, a winding wire 2 wound around the iron core 1, a tank 3 for containing the contents of these electric appliances, and a tank 3
The strip-shaped magnetic shield block 4 has a rectangular cross section and is formed by laminating a plurality of silicon steel sheets, which are attached to each other with a space between them, and has the same structure as the conventional structure. In the present invention, as shown in FIG. 1, the insulating leads 5 are arranged so as to surround the three surfaces of each magnetic shield block 4, and one end thereof is electrically connected to the tank 3. FIG. 2 is a view showing a mounting cross section of the insulating lead 5 and the magnetic shield block 4.
【００１０】磁気シールドブロック４を、図示しないが
タンク３の内壁に溶接されたつめにより固定し、これを
必要な数だけ、必要な間隔寸法を設けて、タンク３の内
面に取付ける。Although not shown, the magnetic shield block 4 is fixed by a claw welded to the inner wall of the tank 3, and the magnetic shield block 4 is attached to the inner surface of the tank 3 with a required number of gaps.
【００１１】本発明においては、磁気シールドブロック
４の厚さより外径の大きい例えば軟銅複合より線に絶縁
を施した絶縁リード５を、各磁気シールドブロック４の
長手方向２面、短手方向１面を、Ｕ字形となるように連
続して囲むように配置している。この場合、軟銅複合よ
り線を使用しているのは、曲げ加工が容易であるためで
ある。また絶縁リード線５の外径を、磁気シールドブロ
ック４の厚さより大きくしているのは、磁気シールドブ
ロック４の両側端角部のシールド保護を確実にするため
である。さらに絶縁リード５の一端を電気的にタンク３
に接続するのは、閉回路とした場合、漏洩磁束により絶
縁リード５に発生する循環電流による損失発生、及び過
熱が問題となるからである。本実施例では、リードの一
端は、絶縁のみ施こし、他方端は、圧縮端子６によりタ
ンク３にボルト締め取付る構造としている。In the present invention, the insulating leads 5 each having an outer diameter larger than the thickness of the magnetic shield block 4, for example, an annealed copper composite stranded wire, are provided with two insulating wires 5 in the longitudinal direction and one surface in the lateral direction of each magnetic shield block 4. Are arranged so as to continuously surround each other so as to form a U shape. In this case, the reason why the annealed copper composite stranded wire is used is that the bending work is easy. Further, the outer diameter of the insulating lead wire 5 is made larger than the thickness of the magnetic shield block 4 in order to ensure the shield protection of both end corners of the magnetic shield block 4. Further, one end of the insulating lead 5 is electrically connected to the tank 3
The reason for this is that, in the case of a closed circuit, the leakage flux causes a loss due to a circulating current generated in the insulating lead 5, and overheating becomes a problem. In this embodiment, one end of the lead is provided with insulation only, and the other end is bolted to the tank 3 by the compression terminal 6.
【００１２】このように構成すれば、従来電界集中を生
じていた磁気シールドブロック４の角部は、絶縁リード
５によりシールド保護されるため、概ね平面と見なすこ
とが出来るので、従来構造に比較して、大幅に電界集中
を低減することが出来る。According to this structure, since the corners of the magnetic shield block 4 that have conventionally generated electric field concentration are shielded by the insulating leads 5, they can be regarded as a substantially flat surface. Therefore, the electric field concentration can be significantly reduced.
【００１３】[0013]
【発明の効果】以上のように本発明によれば、電器中身
を収納したタンク内面に複数枚のけい素鋼板を積層して
形成された断面矩形の短冊状の磁気シールドブロックを
間隔を置いて複数個取り付けた静止誘導電器において、
磁気シールドブロックの厚さより外径の大きい絶縁リー
ドを各磁気シールドブロックの長手方向２面、短手方向
１面を連続して囲むように配置し、かつ絶縁リードの一
端を電気的にタンクに接続するようにしたので、磁気シ
ールドブロック両側端角部の電界集中を低減し、高電圧
充電部と磁気シールドとの間の絶縁距離を縮小し、タン
クの幅寸法を小さくし、磁気シールドの表面を保護する
バーリヤ取り付けを不要とした静止誘導電器を得ること
ができる。As described above, according to the present invention, strip-shaped magnetic shield blocks each having a rectangular cross section and formed by laminating a plurality of silicon steel plates are formed on the inner surface of a tank containing electric appliances at intervals. In a static induction machine with multiple attachments,
Insulating leads with an outer diameter larger than the thickness of the magnetic shield block are arranged so as to continuously surround two faces in the longitudinal direction and one face in the lateral direction of each magnetic shield block, and one end of the insulating lead is electrically connected to the tank. Therefore, the electric field concentration at both end corners of the magnetic shield block is reduced, the insulation distance between the high voltage charging part and the magnetic shield is reduced, the width of the tank is reduced, and the surface of the magnetic shield is reduced. It is possible to obtain a static induction generator that does not require a barrier for protection.
【図１】本発明の一実施例における磁気シールドの取り
付け状態を示す正面図。FIG. 1 is a front view showing a mounted state of a magnetic shield according to an embodiment of the present invention.
【図２】本発明の絶縁リードと磁気シールドブロックの
取り付けを示す断面図。磁気シールドの取り付け状態を
示す正面図。FIG. 2 is a cross-sectional view showing the attachment of the insulated lead and the magnetic shield block of the present invention. The front view which shows the attachment state of a magnetic shield.
【図３】静止誘導電器の概略構成を示す正面図。FIG. 3 is a front view showing a schematic configuration of a stationary induction machine.
【図４】従来の磁気シールドブロックの取り付けを示す
断面図。FIG. 4 is a sectional view showing the attachment of a conventional magnetic shield block.
１ 鉄心 ２ 巻線 ３ タンク ４ 磁気シールドブロック ５ 絶縁リード ７ バーリヤ 1 Iron core 2 Winding 3 Tank 4 Magnetic shield block 5 Insulation lead 7 Barrier
Claims (1)
のけい素鋼板を積層して形成された断面矩形で短冊状の
磁気シールドブロックを間かくを置いて複数個取り付け
た静止誘導電器において、磁気シールドブロックの厚さ
より外径の大きい絶縁リードを各磁気シールドブロック
の長手方向２面、短手方向１面を連続して囲むように配
置し、かつ絶縁リードの一端を電気的にタンクに接続し
たことを特徴とする静止誘導電器。1. A static induction machine in which a plurality of strip-shaped magnetic shield blocks each having a rectangular cross section and formed by laminating a plurality of silicon steel plates are attached to an inner surface of a tank accommodating the contents of an electric appliance with a space provided therebetween. Insulating leads with an outer diameter larger than the thickness of the magnetic shield block are arranged so as to continuously surround two faces in the longitudinal direction and one face in the lateral direction of each magnetic shield block, and one end of the insulating lead is electrically connected to the tank. The static induction electric appliance characterized by having done.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4259696A JPH06112059A (en) | 1992-09-29 | 1992-09-29 | Stationary induction equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4259696A JPH06112059A (en) | 1992-09-29 | 1992-09-29 | Stationary induction equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06112059A true JPH06112059A (en) | 1994-04-22 |
Family
ID=17337659
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4259696A Pending JPH06112059A (en) | 1992-09-29 | 1992-09-29 | Stationary induction equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06112059A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150371769A1 (en) * | 2013-05-13 | 2015-12-24 | Mitsubishi Electric Corporation | Stationary induction device |
-
1992
- 1992-09-29 JP JP4259696A patent/JPH06112059A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150371769A1 (en) * | 2013-05-13 | 2015-12-24 | Mitsubishi Electric Corporation | Stationary induction device |
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