JPH02201828A - Magnetic drive type electrode for vacuum interrupter - Google Patents
Magnetic drive type electrode for vacuum interrupterInfo
- Publication number
- JPH02201828A JPH02201828A JP1960189A JP1960189A JPH02201828A JP H02201828 A JPH02201828 A JP H02201828A JP 1960189 A JP1960189 A JP 1960189A JP 1960189 A JP1960189 A JP 1960189A JP H02201828 A JPH02201828 A JP H02201828A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- contact
- contact surface
- electrode
- current
- 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
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims abstract description 26
- 229910052751 metal Inorganic materials 0.000 abstract description 8
- 239000002184 metal Substances 0.000 abstract description 8
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 238000005219 brazing Methods 0.000 abstract description 3
- 239000010949 copper Substances 0.000 description 5
- 239000011651 chromium Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052804 chromium Inorganic materials 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910017060 Fe Cr Inorganic materials 0.000 description 1
- 229910002544 Fe-Cr Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910001026 inconel Inorganic materials 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000696 magnetic material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/664—Contacts; Arc-extinguishing means, e.g. arcing rings
- H01H33/6643—Contacts; Arc-extinguishing means, e.g. arcing rings having disc-shaped contacts subdivided in petal-like segments, e.g. by helical grooves
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
【発明の詳細な説明】 人 産業上の利用分野 本発明は、アークを磁気回転駆動してしゃ関する。[Detailed description of the invention] Human industrial application field The present invention relates to magnetic rotational driving of an arc.
Ｂ 発明の概要
本発明は、磁気駆動型の真空インタラプタ用電極におい
て、接触面の外径をリード棒の径とほぼ等しいものとし
て、接触面とリード棒との間に形成される電流路におけ
る電流成分のうち、接触面に直交する方向の電流成分を
接触面に平行なものより大きくし、もってしゃ断時の金
属蒸気によるアークの自己拡散力によってアークを接触
部からアーク部へ移動し、アーク部においてアークを回
転移動させてしゃ断するようにしたものである。B. Summary of the Invention The present invention provides an electrode for a magnetically driven vacuum interrupter in which the outer diameter of the contact surface is approximately equal to the diameter of the lead rod, so that the current flow in the current path formed between the contact surface and the lead rod is reduced. Among the current components, the current component in the direction perpendicular to the contact surface is made larger than the current component parallel to the contact surface, so that the arc moves from the contact part to the arc part by the self-diffusion force of the arc due to metal vapor at the time of interruption, and the arc part The arc is cut off by rotationally moving the arc.
Ｃ従来の技術
一般に、真空インタラプタは、第８図に示すように、真
空容器１内に、固定電極２を有する固定リード棒３と可
動１橿４を有し上下動可能な可動リード棒５とを内装し
て構成される。図中、６は可動リード棒５を可動として
いるベローズ、７は真空容器１内周をおおっているシー
ルドである。C. Prior Art Generally, as shown in FIG. 8, a vacuum interrupter includes a fixed lead rod 3 having a fixed electrode 2 and a movable lead rod 5 having a movable rod 4 and movable up and down in a vacuum vessel 1. It consists of an interior. In the figure, 6 is a bellows that makes the movable lead rod 5 movable, and 7 is a shield that covers the inner circumference of the vacuum container 1.
このような真空インタラプタの電極２，４には、大電流
しゃ断簡力特性、低さい断電流値特性、高酌電圧値特性
など種々の電気的特性が要求されろ。The electrodes 2 and 4 of such a vacuum interrupter are required to have various electrical characteristics such as large current breaking characteristics, low breaking current value characteristics, and high voltage value characteristics.
しかしながら、これらの緒特性は相反する性質のもので
あるので、すべてを同時に達成することは難しい。した
がって、従来より、真空インタラプタの用途に応じてい
ずれかの特性を重視して電極材料を選択しなり、特殊な
電極構造を採用したりしている。However, since these characteristics are contradictory, it is difficult to achieve all of them at the same time. Therefore, conventionally, electrode materials have been selected with emphasis on one of the characteristics depending on the purpose of the vacuum interrupter, and a special electrode structure has been adopted.
このような状況のもと、同じ電極径でより電流しゃ断性
能を向上させるための代表例として、磁気駆動型の電極
が知られている。Under these circumstances, magnetically driven electrodes are known as a representative example of improving current cutting performance with the same electrode diameter.
磁気駆動型の電極の一例を第５図、第６図に示す。図に
示すように、この電極８は、複数のスパイラル溝９を備
えたアーク部１０の一方の面側中央部に接触部１１を設
け、アーク部１０の他方の面側にリード棒１２を接続す
る構造となっており、磁気駆動力によりアークを外周方
向に駆動し、電極の極部的な加熱を防止することによっ
て、しゃ断限界の増大を図るものである。An example of a magnetically driven electrode is shown in FIGS. 5 and 6. As shown in the figure, this electrode 8 has a contact portion 11 provided at the center of one side of an arc portion 10 having a plurality of spiral grooves 9, and a lead rod 12 connected to the other side of the arc portion 10. The structure is designed to increase the cutoff limit by driving the arc in the outer circumferential direction using magnetic driving force and preventing local heating of the electrode.
しかして、この電極８ば、アークを回転させろことを目
ざしたものであるから、発生したアークが停滞すること
なく、電流ゼロ点をむかえるまで動いているように種々
の試みがなされている。Since this electrode 8 is intended to rotate the arc, various attempts have been made to ensure that the generated arc does not stagnate and continues to move until the current reaches zero point.
つまり、アーク１３は、第５図中の■で発生した後、ア
ークペダル１０ａ上を■、■。That is, after the arc 13 occurs at point 2 in FIG. 5, it moves over the arc pedal 10a at points 2 and 3.
■のように移動する。この際に、アーク１３は、次々に
発生するアークを集めてアーク柱１３′となって回転す
ることになる。■Move as shown. At this time, the arc 13 collects the arcs generated one after another and rotates to form an arc column 13'.
アーク１ｔの駆動力となるのは、第６図における、電極
８の半径方向に生じる電流１ｈの成分に基因する電極部
に生じるコ字状の電流路による磁気力Ｆである。The driving force for the arc 1t is the magnetic force F due to the U-shaped current path generated in the electrode portion due to the component of the current 1h generated in the radial direction of the electrode 8 in FIG.
したがって、従来は、
■ 磁気力Ｆが大きく生じるように、
ａ： リード棒１２の直径に比較して接触部１１の内径
を大きくする、
ｂ＝ リード棒１２の上部に高抵抗材料（ＳＯ３鋼）か
らなるいわゆるブローアウトリング１４を設ける、
Ｃ：スパイラル溝９の内端部を第５図中９ａで示す如く
接触部１１の下まで伸ばしてアークペダル１０ａを長く
する、
といった手段をとっており、また、
■ アークの回転移動のために、
ａ：アークペダル１０ａの先端を第５図中１０ｂで示す
ように長くして、アークが隣接ペダルに移動しやすくす
る、
ｂ：周辺のアークシールドとの間隙寸法を考慮する、
といった手段をとっている。Therefore, in the past, in order to generate a large magnetic force F, a: The inner diameter of the contact part 11 was made larger than the diameter of the lead rod 12, b= A high resistance material (SO3 steel) was placed on the upper part of the lead rod 12. C: The inner end of the spiral groove 9 is extended below the contact portion 11 as shown by 9a in FIG. 5 to lengthen the arc pedal 10a. In addition, ■ For the rotational movement of the arc, a: The tip of the arc pedal 10a is lengthened as shown by 10b in Fig. 5 to make it easier for the arc to move to the adjacent pedal. Measures are taken to consider the gap size.
発明が解決しようとする課題
上記のような手段をとる従来のＴｉＳにおけろ思想（よ
、発生したアーク１３にすばやくいわゆるコ字力による
磁気駆動力を作用させるようにしたものである。したが
って、アーク１３の動きは、前述したように一点で発生
したアーク１３が成長し、次々に発生したアークを集め
て大きなアーク柱１３′となって回転する如くなる。Problems to be Solved by the Invention In the conventional TiS that takes the above-mentioned measures, the idea is to quickly apply a magnetic driving force by a so-called U-shaped force to the generated arc 13. Therefore, As described above, the movement of the arc 13 is such that the arc 13 generated at one point grows, and the arcs generated one after another are collected to form a large arc column 13' that rotates.
しかし、アークが回転するといっても、アークには電極
外周方向に向かう磁気駆動力が作用していることから、
アークの回転移動はｆｉ極表面の一部のみで終了してし
まい、電極全表面が有効に利用されない。However, even though the arc rotates, there is a magnetic driving force acting on the arc toward the outer circumference of the electrode.
The rotational movement of the arc ends only on a part of the fi pole surface, and the entire electrode surface is not effectively utilized.
したがって、電極径に見合ったしゃ断性能が得られず、
また、前述のように、■スパイラル溝９を長くする、■
アークペダル１０を長くする、■ブローアウトリング１
４を設けろ等の手段をとっても性能の向上には限界があ
り、待に■、■の手段では、爾久性が低下するという別
の問題が発生してしまう。Therefore, breaking performance commensurate with the electrode diameter cannot be obtained,
In addition, as mentioned above, ■ lengthening the spiral groove 9, ■
Lengthen the arc pedal 10, ■Blowout ring 1
Even if measures such as providing 4 are taken, there is a limit to the improvement in performance, and measures ① and ③ create another problem of reduced durability.
第７図には従来の電極における電極径と電流しゃ断性能
との関係を示しである。図には、併せて縦磁界印加型の
電極についても示しである。図かられかるように、磁気
駆動型の電極では、電極径がある寸法以上になると、し
ゃ断性能の向上は望めない。FIG. 7 shows the relationship between the electrode diameter and current cutoff performance in a conventional electrode. The figure also shows a vertical magnetic field application type electrode. As can be seen from the figure, with magnetically driven electrodes, if the electrode diameter exceeds a certain size, no improvement in the blocking performance can be expected.
また、特に、しゃ断電流が５０ｋＡ以上になると、アー
クエネルギが大きくなるため、磁気駆動力のみではアー
クの局所的集中が防止できず、電極径が１１０〜１２０
１以上ではほと凡としゃ断性能は上がらない。In addition, especially when the breaking current exceeds 50 kA, the arc energy becomes large, so the local concentration of the arc cannot be prevented by magnetic driving force alone, and the electrode diameter is 110 to 120 kA.
If it is 1 or more, the breaking performance will hardly improve.
さらに、定格電圧が１２ｋＶ程度の真空インタラプタに
おいては、外部配線との距離（第８図中にｒｌ」で示す
）は２５０〜３５０ｍｍ程度であり、電磁力の値は約２
０ Ｇａｕｓ３／ｌ（Ａ−Ｉｍ（磁束密度／電流・アー
ク長）磁気駆動力Ｆは１０ ｇ ｆ ／ ｋ Ａ−ｗｅ
程度であるため、特にアークがアークペダル１０ａの外
周付近（第５図に示した■の位置）に位置する場合には
、円周方向へアークが移動しにくくなり、しゃ断性能が
低下する。Furthermore, in a vacuum interrupter with a rated voltage of about 12 kV, the distance from the external wiring (indicated by "rl" in Figure 8) is about 250 to 350 mm, and the electromagnetic force is about 2.
0 Gaus3/l (A-Im (magnetic flux density/current/arc length) magnetic driving force F is 10 g f / k A-we
Therefore, especially when the arc is located near the outer periphery of the arc pedal 10a (the position marked with ■ in FIG. 5), it becomes difficult for the arc to move in the circumferential direction, and the breaking performance deteriorates.
上記のように、外方向のＩｉ！ｉ気駆動力によるしゃ断
性能の向上には限界があったので、本件発明者らは原点
に帰り、しゃ断時に発生する金属蒸気の自己拡散力にて
発生したアークを接触部からアーク部に移動させること
ができないか試みた。As mentioned above, the outward Ii! Since there was a limit to the improvement of the breaking performance by the i-air driving force, the inventors of the present invention returned to the original point and moved the arc generated by the self-diffusion force of the metal vapor generated during the breaking from the contact part to the arc part. I tried to see if it was possible.
すなわち、外方向の磁気駆動力が極力小さくなるように
電極を構成してみたのである。In other words, the electrodes were constructed so that the outward magnetic driving force was as small as possible.
具体的には、リード棒の外径と接触面の外径とをほぼ等
しいものとして、リード棒と接触面との間の電流路が、
接触面に直交するもの（第９図中ので示す）が大半とな
るようにして、接触面と平行となる方向の成分（第９図
中０で示す）が極力少なくなるように配慮したのである
。Specifically, assuming that the outer diameter of the lead rod and the outer diameter of the contact surface are approximately equal, the current path between the lead rod and the contact surface is
We made sure that the majority of the components are perpendicular to the contact surface (indicated by 0 in Figure 9), and that the component in the direction parallel to the contact surface (indicated by 0 in Figure 9) is as small as possible. .
この電極を用いて真空インタラプタを組み立てて、その
しゃ断性能を試験したところ、電流しゃ断性能が１０〜
３０％向上する結果が得られた。しかも、試験後のもの
を分解してｔ４電極面を観察したところ、局部的な二ロ
ーシリンはなく、電極表面はぼ全体にアークの痕跡が見
られた（従来のものでは、局部的な二ローションであっ
た）。これから、電極表面全体が有効利用されているこ
とが判った。When a vacuum interrupter was assembled using this electrode and its interrupting performance was tested, the current interrupting performance was 10~10.
A result of 30% improvement was obtained. Moreover, when we disassembled the product after the test and observed the t4 electrode surface, we found that there was no localized dirocyrinization, and traces of arcing were seen on almost the entire electrode surface (with the conventional type, there was no localized dilocyrinization). Met). From this, it was found that the entire electrode surface was effectively utilized.
また、真空インタラプタのシールド内壁面のよごれ、パ
リの発生も少なかった。これは、しゃ断後の耐圧低下防
止が図れ、その結果、大電流しゃ断回数の増加が期待で
きることを示している。In addition, there was less dirt and debris on the inner wall of the vacuum interrupter shield. This shows that it is possible to prevent a drop in withstand voltage after shutoff, and as a result, an increase in the number of large current shutoffs can be expected.
したがって、発生したアークを従来の如く強制的に外方
向向きの磁気力によって駆動させるのではなく、自然発
生の自己拡散力によってアークを接触部からアーク部に
移動させろことにより、良好な結果が得られろことが判
った。Therefore, better results can be obtained by moving the arc from the contact part to the arc part by the naturally occurring self-diffusion force, instead of forcing the generated arc to be driven by an outward magnetic force as in the past. It turned out that it was impossible.
Ｅ 課題を解決するための手段
上記知見に基づき、本発明では、
複数のスパイラル溝を有するアーク部の一方の面の中央
部にリング状の接触面を具備する接触部を設け、他方の
面の中央部にリード棒を接続してなる真空インタラプタ
用磁気駆動型電極において、
少なくとも通電時において前記接触面と前記リード棒と
の間に形成される電流路における電流成分を、接触面に
直交する方向の成分をＩｖ、接触面に平行する方向の成
分をＩｈとしたとき、Ｉｖ＞ｌｈとなるように前記接触
部、アーク部、リード棒を接続構成したのである。E Means for Solving the Problems Based on the above findings, the present invention provides a contact portion having a ring-shaped contact surface in the center of one surface of an arc portion having a plurality of spiral grooves, and a contact portion having a ring-shaped contact surface on the other surface. In a magnetically driven electrode for a vacuum interrupter in which a lead rod is connected to the center part, a current component in a current path formed between the contact surface and the lead rod at least when energized is directed in a direction perpendicular to the contact surface. When the component in the direction parallel to the contact surface is Iv, and the component in the direction parallel to the contact surface is Ih, the contact portion, the arc portion, and the lead rod are connected so that Iv>lh.
なお、前記接触部はクロム、銅を主成分とした材料から
なり、例えばＣｕ −Ｃｒ−Ｍｏの複合金属が採用され
ろ。The contact portion may be made of a material containing chromium or copper as a main component, such as a Cu-Cr-Mo composite metal.
また、前記アーク部は磁性材料と銅を主成分とした材料
からなり、Ｆｅ−Ｃｒや磁性ステンレス鋼−Ｃｕの複合
金属が採用される。Further, the arc portion is made of a material mainly composed of a magnetic material and copper, and a composite metal of Fe-Cr or magnetic stainless steel-Cu is used.
さらに、前記スパイラル溝としては、アーク部を板厚方
向に貫通するもの、表面側もしくは背面側に貫通させな
いで設けるもの、貫通させないでアーク部両面に設ける
ものなどが該当する。Furthermore, the spiral grooves include those that penetrate the arc portion in the thickness direction, those that are provided on the front side or the back side without penetrating them, and those that are provided on both sides of the arc portion without penetrating them.
Ｆ 作 用
上記真空インタラプタ用電極では、電流のしゃ断時、ア
ーク鳥中を起こすことなく、発生した金属蒸気の自己拡
散力によって発生各アークは接触部からアーク部へと移
動し、アーク部において各アークは全体回転するので、
電極面を有効に利用してしゃ断が行なわれる。F Function In the vacuum interrupter electrode described above, when the current is cut off, each generated arc moves from the contact area to the arc area due to the self-diffusion power of the generated metal vapor without causing an arc in the arc. Since the entire arc rotates,
Cutoff is performed by effectively utilizing the electrode surface.
Ｇ実施例
第１図、第２図には本発明の一実施例に係る真空インタ
ラプタ用電極の平面とその■−■矢視断面を示しである
。Embodiment G FIGS. 1 and 2 show a plane of an electrode for a vacuum interrupter according to an embodiment of the present invention and a cross-section thereof taken along the line (■--■).
当該Ｔｉ極のアーク部３０は複数のスパイラル溝２９を
有する。アーク部３０の表面側の中央部にはリング状の
接触部３１をろう付けにより結合する。この電極におい
ては、アーク部３０のスパイラル溝２９は接触部３１に
まで及んでいる。図中、２９ａが接触部３１に形成され
たスパイラル溝２９の延長部である。The arc portion 30 of the Ti pole has a plurality of spiral grooves 29. A ring-shaped contact portion 31 is coupled to the center portion of the surface side of the arc portion 30 by brazing. In this electrode, the spiral groove 29 of the arc portion 30 extends to the contact portion 31. In the figure, 29a is an extension of the spiral groove 29 formed in the contact portion 31.
アーク部３０の裏面側の中央部にはリード棒３２をろう
付けにより接合する。このリード棒３２の外径と前記接
触部３１の外径とはほぼ等しいものとされている。こう
することによって、接触面３１ａ（接触部３１の表面）
に直交する方向の電流路が大きく確保されるのである。A lead rod 32 is joined to the center portion of the back side of the arc portion 30 by brazing. The outer diameter of this lead rod 32 and the outer diameter of the contact portion 31 are approximately equal. By doing this, the contact surface 31a (the surface of the contact portion 31)
This ensures a large current path in the direction perpendicular to .
なお、本電極では、アーク部３０の裏面に、ステンレス
、インコネル等製の補強板３５を設けである。In this electrode, a reinforcing plate 35 made of stainless steel, Inconel, etc. is provided on the back surface of the arc portion 30.
本実施例において、接触部３１は外径４０叫、内径２０
ｍｍで、Ｍ ｏ −Ｃｒの多孔質焼結体にＣｕを溶浸し
て形成される。In this embodiment, the contact portion 31 has an outer diameter of 40 mm and an inner diameter of 20 mm.
mm, and is formed by infiltrating Cu into a porous sintered body of Mo-Cr.
アーク部３０は外径８０順、スパイラル溝の数（＝アー
クペダル３０ａの数）は１２、スパイラル溝２９の幅は
４画で、Ｆｅ、 Ｃｒの多孔質焼結体にＣｕを溶浸した
Ｃｕ （５０％）−Ｆｅ（４２％）−Ｃｒ（８％）の成
分からなる材料にて形成されろ。The arc part 30 has an outer diameter of 80, the number of spiral grooves (=the number of arc pedals 30a) is 12, the width of the spiral groove 29 is 4 strokes, and is made of Cu infiltrated into a porous sintered body of Fe and Cr. (50%) - Fe (42%) - Cr (8%).
上記構成の電極を第３図に示すように、固定電極３３、
可動電極３４として真空インタラプタを構成し、電極径
を変えて電流しゃ断性能について試験した結果を第４図
に示す。As shown in FIG. 3, the electrodes with the above configuration are fixed electrodes 33,
A vacuum interrupter was constructed as the movable electrode 34, and the current interrupting performance was tested by changing the electrode diameter. The results are shown in FIG.
第３図において、真空インタラプタの構成部材は第８図
に示したものと同じであり、同一部材は同一符号で示し
である。なお、試験の条件は、電圧１２ ｋＶ、電極間
ギャップ１２印である。In FIG. 3, the constituent members of the vacuum interrupter are the same as those shown in FIG. 8, and the same members are designated by the same reference numerals. Note that the test conditions were a voltage of 12 kV and an interelectrode gap of 12 marks.
通電時及び開極直後（アークが接触面上に存在する間）
においては、リード棒１２と接触面３１ａとの間の電流
路が、接触面３１ａに直交するもの（第２図、第９図中
ので示す）が大半（Ｉ ｖ） Ｉ ｈ）となるので、し
ゃ断時に生ずる金属蒸気の自己拡散力によって、アーク
ｉ、ｆ放射方向に広がって、接触部からアーク部へ移動
し、アーク部におけるスパイラル溝の作用によって回転
移動し、消弧する。第１図において、アークの移動を説
明的に矢印Ａで示しである。During energization and immediately after contact opening (while the arc exists on the contact surface)
In this case, most of the current paths between the lead rod 12 and the contact surface 31a are (I v) I h) perpendicular to the contact surface 31a (indicated by the circles in FIGS. 2 and 9). Due to the self-diffusion force of the metal vapor generated at the time of interruption, the arcs i and f spread in the radial direction, move from the contact part to the arc part, rotate and move by the action of the spiral groove in the arc part, and are extinguished. In FIG. 1, the movement of the arc is illustrated by an arrow A.
試験の結果、本発明の電極を用いた真空インタラプタに
おけろしゃ断性能（第４図中ｏ −ｏで示す）は従来品
のもの（第４図中×−×で示す）より外径において１０
〜３０％良好であり、しかも１２０朧の大径のものにお
いても、極めて良好な結果が得られた。As a result of the test, the breaking performance (indicated by o - o in Fig. 4) of the vacuum interrupter using the electrode of the present invention was 10% higher in the outer diameter than that of the conventional product (indicated by x - x in Fig. 4).
-30% good results, and extremely good results were obtained even with the large diameter 120 oboro.
１（発明の効果
本発明に係る真空インタラブ・り用磁気駆動型電極は、
少なくとも通電時において接触部の接触面とリード棒と
の間に形成されろ電流路における電流成分を、接触面に
直交する方向の成分をＩｖ、接触面に平行する方向の成
分をＩｈとしたとき、Ｉｖ＞Ｉｈとなるように接触部、
アーク部、リード棒を接続構成して、電流しゃ断時に発
生する金属蒸気の自己拡散力によってアークが接触部か
らアーク部へ移動し、アーク部において全体回転して消
弧するようにしたので、しゃ断性能が向上し、電極面を
有効に利用できることから電極径の小型化、ひいては真
空インタラプタの小型化が達成できろ。また、シールド
のよごれ及びパリの発生が抑えられることから、耐電圧
の向上、大電流しゃ断回数の増大が図れる。1 (Effects of the Invention The magnetically driven electrode for vacuum interaction according to the present invention has the following effects:
At least when current is applied, the current component in the current path formed between the contact surface of the contact part and the lead rod, where the component in the direction perpendicular to the contact surface is Iv, and the component in the direction parallel to the contact surface is Ih. , the contact part so that Iv>Ih,
The arc part and the lead rod are connected in such a way that the arc moves from the contact part to the arc part by the self-diffusion force of the metal vapor generated when the current is cut off, and the whole body rotates in the arc part to extinguish the arc. Since performance is improved and the electrode surface can be used effectively, the electrode diameter can be reduced, and the vacuum interrupter can also be made smaller. In addition, since the shield is prevented from becoming dirty and the occurrence of flakes, the withstand voltage can be improved and the number of times the large current can be cut off can be increased.
第１図は本発明の一実施例に係る真空インタラプタ用電
極の平面図、第２図はその■−■矢視断面図、第３図は
実施例に係る電極を備えた真空インタラプタの縦断面図
、第４図は電極径としゃ断性能との関係を示すグラフ、
第５図は従来の磁気駆動型電極の平面図、第６図はその
Ｍ−■矢視断面図、第７図は従来の電極の電極径としゃ
断性能との関係を示すグラフ、第８図は真空インタラプ
タの概略図、第９図は電流路の説明図である。
図 面 中、
２９はスパイラル溝、
３０はアーク部、
３１は接触部、
３２はリード棒である。
特 許 出 願
株式会社 明
代 理FIG. 1 is a plan view of an electrode for a vacuum interrupter according to an embodiment of the present invention, FIG. 2 is a cross-sectional view taken along arrows -■, and FIG. 3 is a vertical cross-section of a vacuum interrupter equipped with an electrode according to an embodiment. Figure 4 is a graph showing the relationship between electrode diameter and cutting performance.
Fig. 5 is a plan view of a conventional magnetically driven electrode, Fig. 6 is a sectional view taken along the M-■ arrow, Fig. 7 is a graph showing the relationship between the electrode diameter and cutting performance of the conventional electrode, and Fig. 8 9 is a schematic diagram of a vacuum interrupter, and FIG. 9 is an explanatory diagram of a current path. In the drawing, 29 is a spiral groove, 30 is an arc portion, 31 is a contact portion, and 32 is a lead rod. Patent Application Co., Ltd. Osamu Akiyo
Claims (1)
部にリング状の接触面を具備する接触部を設け、他方の
面の中央部にリード棒を接続してなる真空インタラプタ
用磁気駆動型電極において、 少なくとも通電時において前記接触面と前記リード棒と
の間に形成される電流路における電流成分を、接触面に
直交する方向の成分をＩｖ、接触面に平行する方向の成
分をＩｈとしたとき、Ｉｖ＞Ｉｈとなるように前記接触
部、アーク部、リード棒を接続構成したことを特徴とす
る真空インタラプタ用磁気駆動型電極。[Claims] A vacuum formed by providing a contact portion having a ring-shaped contact surface in the center of one surface of an arc portion having a plurality of spiral grooves, and connecting a lead rod to the center of the other surface. In a magnetically driven electrode for an interrupter, at least when current is energized, a current component in a current path formed between the contact surface and the lead rod, a component in a direction perpendicular to the contact surface is Iv, and a component in a direction parallel to the contact surface. A magnetically driven electrode for a vacuum interrupter, characterized in that the contact portion, the arc portion, and the lead rod are connected so that Iv>Ih, where Ih is a component of the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1960189A JPH02201828A (en) | 1989-01-31 | 1989-01-31 | Magnetic drive type electrode for vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1960189A JPH02201828A (en) | 1989-01-31 | 1989-01-31 | Magnetic drive type electrode for vacuum interrupter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02201828A true JPH02201828A (en) | 1990-08-10 |
Family
ID=12003734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1960189A Pending JPH02201828A (en) | 1989-01-31 | 1989-01-31 | Magnetic drive type electrode for vacuum interrupter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02201828A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016095905A (en) * | 2014-11-12 | 2016-05-26 | 三菱電機株式会社 | Vacuum valve |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4897061A (en) * | 1972-03-02 | 1973-12-11 | ||
| JPS4946245B1 (en) * | 1969-08-19 | 1974-12-09 | ||
| JPS5725636A (en) * | 1980-07-23 | 1982-02-10 | Tokyo Shibaura Electric Co | Vacuum valve |
| JPS6276225A (en) * | 1985-09-30 | 1987-04-08 | 株式会社東芝 | Vacuum breaker |
-
1989
- 1989-01-31 JP JP1960189A patent/JPH02201828A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4946245B1 (en) * | 1969-08-19 | 1974-12-09 | ||
| JPS4897061A (en) * | 1972-03-02 | 1973-12-11 | ||
| JPS5725636A (en) * | 1980-07-23 | 1982-02-10 | Tokyo Shibaura Electric Co | Vacuum valve |
| JPS6276225A (en) * | 1985-09-30 | 1987-04-08 | 株式会社東芝 | Vacuum breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2016095905A (en) * | 2014-11-12 | 2016-05-26 | 三菱電機株式会社 | Vacuum valve |
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