JPS6231917A - Electrode construction of vacuum discharge-applied equipment - Google Patents
Electrode construction of vacuum discharge-applied equipmentInfo
- Publication number
- JPS6231917A JPS6231917A JP17134485A JP17134485A JPS6231917A JP S6231917 A JPS6231917 A JP S6231917A JP 17134485 A JP17134485 A JP 17134485A JP 17134485 A JP17134485 A JP 17134485A JP S6231917 A JPS6231917 A JP S6231917A
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- Prior art keywords
- electrode
- coil
- main
- arm
- main electrode
- 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.)
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- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】 機器の電極構造に関するものである。[Detailed description of the invention] It relates to the electrode structure of devices.
第９図は例えば特開昭５８−１００３２５号公報に示さ
れた従来の真空遮断器の電極構造を示す分解斜視図であ
り、図において、ｌは電極棒であり、その先端部１ａに
は短絡部材７が増り付は固定されており、該短絡部材７
はその中心部に上記先端部１ａに嵌装される連結リング
７ａを有し、該連結リング７ａの外周部には４本の半径
方向外方に伸びる腕７ｂが形成され、さらにこの各腕７
ｂの先端には垂直上方に向けて接続部７ｃが突設されて
いる。FIG. 9 is an exploded perspective view showing the electrode structure of a conventional vacuum circuit breaker disclosed in, for example, Japanese Patent Application Laid-Open No. 58-100325. The additional member 7 is fixed, and the short circuit member 7
has a connecting ring 7a fitted in the tip 1a at its center, and four arms 7b extending radially outward are formed on the outer periphery of the connecting ring 7a.
A connecting portion 7c is provided at the tip of b to protrude vertically upward.
そしてこの短絡部材７の上部には主電極３が固着されて
おり、該主電極３は円板状の中央部３ａと４個の円弧状
のコイル部３ｂとからなり、該コイル部３ｂはその基端
部３Ｃが該中央部３ａに連続して一体に形成され、かつ
この基端部３Ｃから同一円周方向に伸びており、該各コ
イル部３ｂの先端底面３ｄには上記短絡部材７の各接続
部７Ｃのに１面７ｄが当接している。そしてこれにより
電極棒１と主電極３とが短絡部材７により電気的に接続
されている。A main electrode 3 is fixed to the upper part of the shorting member 7, and the main electrode 3 consists of a disk-shaped central part 3a and four arc-shaped coil parts 3b. A base end portion 3C is formed continuously and integrally with the central portion 3a and extends from the base end portion 3C in the same circumferential direction, and the shorting member 7 is provided on the bottom surface 3d of the tip end of each coil portion 3b. One surface 7d is in contact with each connecting portion 7C. As a result, the electrode rod 1 and the main electrode 3 are electrically connected by the shorting member 7.
また８は支持部材で、その棒状部８ａは」ユ記電極棒１
の支持穴ＩＣに挿入固定され、その円板状の支持部８ｂ
は」−記主電極３の中心部を支持している。そしてこれ
ら電極棒１．短絡部材７．主電極３及び支持部材８が相
対向して対をなし、かつ主電極３同志が接離自在に設け
られており、これらが真空容器（図示せず）に納められ
て真空遮断器が構成されている。Further, 8 is a support member, and its rod-shaped portion 8a is the electrode rod 1 shown in FIG.
The disc-shaped support portion 8b is inserted and fixed into the support hole IC of
supports the center of the main electrode 3. And these electrode rods 1. Shorting member 7. The main electrode 3 and the support member 8 form a pair facing each other, and the main electrodes 3 are provided so as to be able to come into contact with and separate from each other, and these are housed in a vacuum container (not shown) to constitute a vacuum circuit breaker. ing.
次に作用について説明する。第１０図および第１１図に
おいて、アークスポットが主電極３の表面中央部のｌ）
点に発生した場合、電流は同図に示すように電流経路Ｒ
に沿ってＰ点から中央部３ａを半径方向外方に進み、コ
イル部３ｂの基端部３Ｃ１その先端底面３ｄ、短絡部材
７の接続部７ｃ。Next, the effect will be explained. In FIGS. 10 and 11, the arc spot is located at the center of the surface of the main electrode 3.
If the current is generated at a point, the current will follow the current path R as shown in the figure.
Proceeding radially outward along the central portion 3a from point P, the base end 3C1 of the coil portion 3b, its tip bottom surface 3d, and the connecting portion 7c of the short-circuiting member 7.
腕７ｂ及び連結リング７ａを通って電極棒ｌに流れ、こ
れにより第１１図に示すように軸方向磁界が発生ずる。It flows through the arm 7b and the connecting ring 7a to the electrode rod l, thereby generating an axial magnetic field as shown in FIG.
この軸方向磁界は、真空遮断器で大電流を遮断する際に
真空容器内に自然拡散するプラズマを効果的に抑えるこ
とが出来るので、遮断時の主電極３間のアーク電圧を低
減出来ると共に、アークが主電極３表面の１箇所に築中
廿ず、全面に拡散するので、遮断能力を向、トさゼるこ
とか出来る。This axial magnetic field can effectively suppress the plasma that naturally diffuses inside the vacuum vessel when interrupting a large current with a vacuum circuit breaker, so it can reduce the arc voltage between the main electrodes 3 at the time of interrupting the current, and Since the arc does not build up in one place on the surface of the main electrode 3, but spreads over the entire surface, the breaking ability can be increased or increased.
しかしながら第１１図に示すように電流経路Ｒにより発
生する磁界は■方向と■方向の２方向成分が含まれてお
り、均一な磁界は発生していない。However, as shown in FIG. 11, the magnetic field generated by the current path R includes components in two directions, the {circle around (2)} direction and the {circle over (2)} direction, and a uniform magnetic field is not generated.
その為、電流遮断時に作用する有効な軸方向磁界は電極
全表面に作用していないので、電極面積の割に遮断性能
が低く、また安定性がないといった問題点があった。Therefore, since the effective axial magnetic field that acts upon current interruption does not act on the entire surface of the electrode, there are problems in that the interruption performance is low relative to the electrode area and there is no stability.
この発明は上記のような問題点を解消するためになされ
たもので、同一方向でし７かも均一な軸方向磁界を発生
するようにした真空放電応用機器の電極構造を得ること
を目的とする。This invention was made to solve the above-mentioned problems, and its purpose is to obtain an electrode structure for vacuum discharge application equipment that generates a uniform axial magnetic field in the same direction. .
この発明に係る真空放電応用機器の電極構造は、半径方
向と円周方向のスリットによりコイル部が形成された主
電極と、半径方向と円周方向の腕を有する補助コイル電
極とを用い、主電極のコイル部と補助コイル電極の円周
方向の腕とを接続し、主電極コイル部の基端部と補助コ
イル電極の半径方向の腕とを同一線、ヒに配置したもの
である。The electrode structure of the vacuum discharge application device according to the present invention uses a main electrode in which a coil portion is formed by slits in the radial direction and the circumferential direction, and an auxiliary coil electrode having arms in the radial direction and the circumferential direction. The coil part of the electrode and the circumferential arm of the auxiliary coil electrode are connected, and the base end of the main electrode coil part and the radial arm of the auxiliary coil electrode are arranged on the same line.
この発明においては、主電極のコイル部の基端部と補助
コイル電極の半ｉ￥方向の腕とが同一線上に配置されて
いることから、主電極の半径方向に流れる電流の位置と
？１１ｉ助コイル電極の半径方向の腕に流れる電流の位
置とが一致し、しかも両型流方向が相■に逆方向となり
、両電流によって生しる磁界が互いに打ち消し合い、主
電極には主電極コイル部及び補助コイル電極の円周方向
の腕に流れる電流によってのみ同一方向の磁界が生じる
こととなる。In this invention, since the proximal end of the coil portion of the main electrode and the arm of the auxiliary coil electrode in the semi-i direction are arranged on the same line, the position of the current flowing in the radial direction of the main electrode and the ? The positions of the currents flowing in the radial arms of the 11i auxiliary coil electrodes match, and the flow directions of both types are opposite to the phase 1, so that the magnetic fields generated by both currents cancel each other out, and the main electrode A magnetic field in the same direction is generated only by the current flowing in the circumferential arms of the coil portion and the auxiliary coil electrode.
以下、本発明の実施例を図について説明する。 Hereinafter, embodiments of the present invention will be described with reference to the drawings.
第１図は本発明の一実施例による真空放電応用機器の電
極構造を示し、これは真空遮断器の電極構造に適用した
例である。第１図において、１は電極棒であり、その先
端部１ａには補助コイル電極７が取り付は固定されてお
り、該補助コイル電極７はその中心部に上記先端部１ａ
に嵌装される連結リング７ａを有し、該連結リング７ａ
の外周部には４本の半径方向外方に伸びる腕７ｂと該腕
７ｂ先端から円周方向に伸びる腕７ｅが形成され、さら
にこの各腕７ｅの先端には垂直上方に向けて接続部７Ｃ
が突設されている。FIG. 1 shows an electrode structure of a vacuum discharge application device according to an embodiment of the present invention, and this is an example applied to an electrode structure of a vacuum circuit breaker. In FIG. 1, reference numeral 1 denotes an electrode rod, and an auxiliary coil electrode 7 is fixedly attached to its tip 1a, and the auxiliary coil electrode 7 has the tip 1a at its center.
The connecting ring 7a is fitted into the connecting ring 7a.
Four arms 7b extending outward in the radial direction and an arm 7e extending circumferentially from the tip of the arm 7b are formed on the outer periphery of the , and a connecting portion 7C is formed vertically upward at the tip of each arm 7e.
is installed protrudingly.
そしてこの補助コイル電極７の上部には主電極３が固着
されており、該主電極３は円板状の中央部３ａと４個の
円弧状のコイル部３ｂとからなり、該コイル部３ｂはそ
の基端部３Ｃ７！ｌ（該中央部３ａに連続して一体に形
成され、この基端部３ｃから同−円周方向に伸び、その
長さは補助コイル電極７の円周方向の腕７ｅより長くな
っており、該各コイル部３ｂの先端底面３ｄには上記補
助コイル電極７の各接続部７ｃの上面７ｄが当接してい
る。A main electrode 3 is fixed to the upper part of the auxiliary coil electrode 7, and the main electrode 3 consists of a disk-shaped central part 3a and four arc-shaped coil parts 3b. Its base end 3C7! l (formed continuously and integrally with the central portion 3a, extending in the same circumferential direction from the base end portion 3c, and having a length longer than the circumferential arm 7e of the auxiliary coil electrode 7; The top surface 7d of each connection portion 7c of the auxiliary coil electrode 7 is in contact with the bottom surface 3d of the tip end of each coil portion 3b.
そしてこれにより電極棒１と主電極３とが補助コイル電
極７により電気的に接続されている。As a result, the electrode rod 1 and the main electrode 3 are electrically connected by the auxiliary coil electrode 7.
次に作用について説明する。第２図および第３図におい
てアークスポットが主電極３の表面中央部のＰ点に発生
した場合、電流は同図に示すように電流経路Ｒに沿って
Ｐ点から中央部３ａを半径方向外方に進み、コイル部３
ｂの基端部３ｃ、その先端底面３ｄ、補助コイル電極７
の接続部７ｃ。Next, the effect will be explained. In FIGS. 2 and 3, when an arc spot occurs at point P at the center of the surface of main electrode 3, the current flows radially outward from point P to center 3a along current path R, as shown in the figure. Move toward the coil part 3.
The base end 3c of b, the bottom surface 3d of its tip, and the auxiliary coil electrode 7
connection part 7c.
円周方向の腕７ａ、半径方向の腕７ｂ及び連結リング７
ａを通って、電極棒１に流れ、これにより第３図に示す
ように軸方向磁界が発生する。この軸方向磁界は第１１
図に示す場合に比べるとわかるように、主電極３の半径
方向に流れる電流の位置と、補助コイル電極７の半径方
向の腕７ｂに流れる電流の位置とが一致しており、しか
もお互いの電流方向が逆であるため、磁界が打ち消し合
い、主電極３に生じる磁界は主電極３のコイル３ｂと補
助コイル電極７の円周方向の腕７ｅとに流れる電流のみ
により生じるために、円周方向のみの成分となり、主電
極３の中央部３ａには同一方向でかつ均一な軸方向磁界
が発生する。Circumferential arm 7a, radial arm 7b and connecting ring 7
a to the electrode rod 1, thereby generating an axial magnetic field as shown in FIG. This axial magnetic field is the 11th
As can be seen from the comparison with the case shown in the figure, the position of the current flowing in the radial direction of the main electrode 3 and the position of the current flowing in the radial direction arm 7b of the auxiliary coil electrode 7 match, and moreover Since the directions are opposite, the magnetic fields cancel each other out, and the magnetic field generated in the main electrode 3 is generated only by the current flowing in the coil 3b of the main electrode 3 and the circumferential arm 7e of the auxiliary coil electrode 7. Therefore, the magnetic field is generated in the circumferential direction. A uniform axial magnetic field is generated in the central portion 3a of the main electrode 3 in the same direction.
以上のような本実施例の電極構造では、主電極コイル部
の基端部と補助コイル電極の半径方向の腕とを同一線上
に配置し、各々に流れる電流によって生じる磁界を互い
に打ち消し合うようにしたので、主電極に均一で同一方
向の磁界を発生させることができ、その結果遮断性能を
大幅に向上できる。In the electrode structure of this embodiment as described above, the base end of the main electrode coil portion and the radial arm of the auxiliary coil electrode are arranged on the same line so that the magnetic fields generated by the current flowing in each cancel each other out. Therefore, it is possible to generate a uniform magnetic field in the same direction at the main electrode, and as a result, the interrupting performance can be greatly improved.
なお上記実施例では主電極コイル部３ｂを４個設けたが
、これは４個に限らず何個設けても良く、コイル部３ｂ
（１）個数を変えることによってコイル部３ｂに流れる
電流の強さを変えることができるので、これにより磁界
の強さも変えることができる。また主電極３の形状は、
第５図ないし第８図に示すように半径方向の満１０を追
加したものであっても同様の効果を奏する。更に磁界分
布を向上させるために、主電極３の中央部３ａを第４図
１ａｌ、 （ｂ）に示すような凸形状または第４図（Ｃ
１に示すようなテーパ形状とすることにより、アークス
ポット発生点Ｐが有効な磁界範囲内に発生するので更に
効果がある。In the above embodiment, four main electrode coil parts 3b are provided, but this is not limited to four, and any number of main electrode coil parts 3b may be provided.
(1) Since the strength of the current flowing through the coil portion 3b can be changed by changing the number, the strength of the magnetic field can also be changed thereby. The shape of the main electrode 3 is
The same effect can be obtained even if the radial direction of 10 is added as shown in FIGS. 5 to 8. In order to further improve the magnetic field distribution, the central part 3a of the main electrode 3 is formed into a convex shape as shown in FIGS.
By forming the tapered shape as shown in FIG. 1, the arc spot generation point P is generated within the effective magnetic field range, which is more effective.
また上記実施例では真空遮断器の場合について説明した
が、本発明は真空ヒユーズや真空放電装置等、他の真空
放電応用機器の電極構造に対しても適用でき、上記実施
例と同様の効果がある。Furthermore, although the above embodiment describes the case of a vacuum circuit breaker, the present invention can also be applied to the electrode structure of other vacuum discharge application equipment such as vacuum fuses and vacuum discharge devices, and the same effects as in the above embodiment can be obtained. be.
以上のように、本発明に係る真空放電応用機器の電極構
造によれば、主電極コイル部の基端部と補助コイル電極
の半径方向の腕とを同一直線上に配置し、各々に流れる
電流によって生じる逆方向の磁界を相互に打ち消し合わ
せるようにしたので、同一方向でかつ均一な軸方向磁界
を発生させることができる効果がある。As described above, according to the electrode structure of the vacuum discharge application device according to the present invention, the base end of the main electrode coil portion and the radial arm of the auxiliary coil electrode are arranged on the same straight line, and the current flowing through each Since the magnetic fields generated in opposite directions are canceled out by each other, it is possible to generate a uniform axial magnetic field in the same direction.
第１図は本発明の一実施例による真空放電応用機器の電
極構造の分解斜視図、第２図及び第３図はともに一上記
構造の作用を説明するための図、第４図（ａ）、 （ｂ
ｌ、 １Ｃ１は各々電極構造の変形例を示す断面図、第
５図ないし第８図は各々本発明の他の実施例を示す平面
図、第９図は従来の電極構造の分解斜視図、第１０図及
び第１１図はともに従来構造の問題点を説明するための
図である。
１・・・電極棒、３・・・主電極、３ｂ・・・コイル部
、３Ｃ・・・基端部、７・・・補助コイル電極、７ｂ・
・・半径方向の腕、７ｅ・・・円周方向の腕。
なお図中、同一符号は同−又は相当部分を示す。FIG. 1 is an exploded perspective view of an electrode structure of a vacuum discharge application device according to an embodiment of the present invention, FIGS. 2 and 3 are diagrams for explaining the operation of the above structure, and FIG. 4(a) , (b
1 and 1C1 are cross-sectional views showing modified examples of the electrode structure, FIGS. 5 to 8 are plan views showing other embodiments of the present invention, and FIG. 9 is an exploded perspective view of the conventional electrode structure. Both FIG. 10 and FIG. 11 are diagrams for explaining the problems of the conventional structure. DESCRIPTION OF SYMBOLS 1... Electrode rod, 3... Main electrode, 3b... Coil part, 3C... Base end part, 7... Auxiliary coil electrode, 7b.
...Radial arm, 7e...Circumferential arm. In the drawings, the same reference numerals indicate the same or equivalent parts.
Claims (3)
電極が電極棒を介して接離自在に設けられ、該一対の主
電極の少なくとも一方の中央部の外側端に複数の円弧状
のコイル部がその基端部が該中央部に連続しかつ同一円
周方向に伸びるよう形成され、 上記電極棒と上記主電極との間には補助コイル電極が介
設され、該補助コイル電極は円周方向の腕とこれに連続
する半径方向の腕とを有し、円周方向の腕の先端は上記
主電極コイル部先端に接続され、 半径方向の腕は上記主電極コイル部の基端部と同一線上
に配置されていることを特徴とする真空放電応用機器の
電極構造。(1) A pair of disc-shaped main electrodes for opening and closing an electric circuit are provided in a vacuum container so as to be able to be freely approached and separated via an electrode rod, and a plurality of disc-shaped main electrodes are provided at the outer end of the center of at least one of the pair of main electrodes. An arc-shaped coil part is formed such that its base end is continuous with the central part and extends in the same circumferential direction, and an auxiliary coil electrode is interposed between the electrode rod and the main electrode, and the auxiliary coil electrode is interposed between the electrode rod and the main electrode. The coil electrode has a circumferential arm and a radial arm continuous thereto, the tip of the circumferential arm is connected to the tip of the main electrode coil section, and the radial arm is connected to the main electrode coil section. An electrode structure for a vacuum discharge application device, characterized in that the electrode structure is arranged on the same line as the base end of the electrode.
円周方向の腕より長いことを特徴とする特許請求の範囲
第１項記載の真空放電応用機器の電極構造。(2) The electrode structure for vacuum discharge application equipment according to claim 1, wherein the length of the coil portion of the main electrode is longer than the circumferential arm of the auxiliary coil electrode.
あることを特徴とする特許請求の範囲第１項記載の真空
放電応用機器の電極構造。(3) The electrode structure for vacuum discharge application equipment according to claim 1, wherein the central portion of the main electrode has a convex shape or a tapered shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17134485A JPS6231917A (en) | 1985-08-02 | 1985-08-02 | Electrode construction of vacuum discharge-applied equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17134485A JPS6231917A (en) | 1985-08-02 | 1985-08-02 | Electrode construction of vacuum discharge-applied equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6231917A true JPS6231917A (en) | 1987-02-10 |
Family
ID=15921471
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17134485A Pending JPS6231917A (en) | 1985-08-02 | 1985-08-02 | Electrode construction of vacuum discharge-applied equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6231917A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293506A (en) * | 1991-06-17 | 1994-03-08 | Mitsubishi Denki Kabushiki Kaisha | Vacuum switch tube including windmill electrodes |
| JPH0785754A (en) * | 1992-11-10 | 1995-03-31 | Mitsubishi Electric Corp | Vacuum valve |
-
1985
- 1985-08-02 JP JP17134485A patent/JPS6231917A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5293506A (en) * | 1991-06-17 | 1994-03-08 | Mitsubishi Denki Kabushiki Kaisha | Vacuum switch tube including windmill electrodes |
| JPH0785754A (en) * | 1992-11-10 | 1995-03-31 | Mitsubishi Electric Corp | Vacuum valve |
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