JPS6329369B2 - - Google Patents
Info
- Publication number
- JPS6329369B2 JPS6329369B2 JP196584A JP196584A JPS6329369B2 JP S6329369 B2 JPS6329369 B2 JP S6329369B2 JP 196584 A JP196584 A JP 196584A JP 196584 A JP196584 A JP 196584A JP S6329369 B2 JPS6329369 B2 JP S6329369B2
- Authority
- JP
- Japan
- Prior art keywords
- current
- current path
- magnetic field
- electrode
- conductive rod
- 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
Links
- 230000003014 reinforcing effect Effects 0.000 claims description 13
- 239000004020 conductor Substances 0.000 claims description 5
- 238000013459 approach Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005219 brazing Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は真空しや断器の電極構成とくにアーク
に対して多極性の平行な向きの磁界を発生する手
段を備えてなる真空しや断器の電極構造に関す
る。[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to an electrode configuration of a vacuum shield breaker, and particularly to a vacuum shield breaker comprising means for generating a multipolar magnetic field parallel to an arc. Regarding the electrode structure.
従来、大電流しや断用の電極構造としては、ア
ークに対して直角な向きの磁界を印加して磁気駆
動する構造が多く用いられてきたが、最近ではよ
り大電流しや断用として、アークに対して平行な
向きの磁界を印加してアークを安定化する方式の
構造が提案されてきている。そして、さらにこの
平行な向きの磁界を印加する構造では、渦電流を
小さくできる多極性の平行磁界を印加する方式が
提案されている。
Conventionally, as an electrode structure for large current flow, a structure that magnetically drives by applying a magnetic field perpendicular to the arc has been used, but recently, for larger current flow, Structures have been proposed in which the arc is stabilized by applying a magnetic field parallel to the arc. Furthermore, in a structure that applies magnetic fields in parallel directions, a method has been proposed that applies multipolar parallel magnetic fields that can reduce eddy currents.
すなわち、第１図において、真空しや断器１は
絶縁物の筒体２の両端開口部を端板３，４で閉塞
して真空容器５を作り、この真空容器５の内部に
固定側導電棒６及び可動側導電棒７を介して一対
の固定電極８及び可動電極９を配置して構成す
る。固定側導電棒６は端板３に固定され、可動側
導電棒７は端板４を貫通して、その貫通部にベロ
ーズ１０を設けて密封している。電極８，９の少
くとも一方には平行磁界を発生させる機能を持た
せた第２図に示す平行磁界電極１３Ａを有する。
平行磁界電極１３Ａは、導電棒７には半径方向に
伸びる第１の電流通路１２ａ，１２ｂを有し、こ
れらは、導電棒７を軸中心とする環状の電流通路
１３に接続されている。そして、この環状の電流
通路上における前記第１の電流通路との接続点
Ａ，Ｂで区切られた円弧上のほぼ中間点Ｃ，Ｄに
突部１５ａ，１５ｂが設けられていて、この突部
１５ａ，１５ｂは電極板１１に設けられた溝１６
ａ，１６ｂ，１６ｃ，１６ｄによつて区切られた
第２の半径方向電流通路１４ａ，１４ｂに接続さ
れている。その結果、電流軌跡の電極板１１への
投影は第３図の如くなり、これらの電流通路で区
切られた扇形の領域には夫々隣合うもの同志極性
の異なる多極性の軸方向磁界すなわちアーク１０
０に対して平行な磁界が発生する。ところで、こ
の方式の電極においては、電極板１１内の渦電流
を小さく抑制するために、電極板１１は、導電率
の比較的小さい材料で構成する。その結果、第２
の半径方向電流通路１４ａ，１４ｂの抵抗値が大
きいものとなり、負荷電流通電時に大きな熱量を
発生して、回路の温度を上昇させるという欠点が
あつた。 That is, in FIG. 1, the vacuum shield breaker 1 closes the openings at both ends of an insulating cylinder 2 with end plates 3 and 4 to form a vacuum container 5, and has a fixed conductor inside the vacuum container 5. A pair of fixed electrodes 8 and a movable electrode 9 are arranged via a rod 6 and a movable conductive rod 7. The fixed conductive rod 6 is fixed to the end plate 3, and the movable conductive rod 7 passes through the end plate 4, and a bellows 10 is provided in the penetrating portion to seal it. At least one of the electrodes 8 and 9 has a parallel magnetic field electrode 13A shown in FIG. 2 which has a function of generating a parallel magnetic field.
The parallel magnetic field electrode 13A has first current paths 12a and 12b extending in the radial direction of the conductive rod 7, and these are connected to an annular current path 13 having the conductive rod 7 as the axis center. Projections 15a and 15b are provided at approximately midpoints C and D on the arc that is separated by the connection points A and B with the first current path on this annular current path. 15a and 15b are grooves 16 provided in the electrode plate 11.
It is connected to a second radial current path 14a, 14b delimited by a, 16b, 16c, 16d. As a result, the current trajectory is projected onto the electrode plate 11 as shown in FIG.
A magnetic field parallel to zero is generated. By the way, in this type of electrode, in order to suppress the eddy current in the electrode plate 11 to a small level, the electrode plate 11 is made of a material with relatively low conductivity. As a result, the second
The resistance value of the radial current paths 14a and 14b is large, and a large amount of heat is generated when the load current is applied, which increases the temperature of the circuit.
本発明の目的とするところは、負荷電流通電時
に過大な温度上昇を発生することなく、大負荷電
流通電が可能な真空しや断器用電極を提供するに
ある。
An object of the present invention is to provide an electrode for a vacuum shield or breaker that can conduct a large load current without causing an excessive temperature rise when the load current is applied.
本発明の特徴は、導電棒より半径方向に向かう
複数個の第１電流通路と、それに連接する少なく
とも１以上の環状電流通路と、その環状電流通路
上にて、第１電流通路との接続点によつて区切ら
れた円弧にて連接して電極板内を軸中心方向に伸
びる第２の電流通路を有する真空しや断器におい
て、第２の電流通路部の裏側に、良導体よりなる
通電補強体を設けてなるところにある。
The present invention is characterized by a plurality of first current paths extending radially from the conductive rod, at least one annular current path connected thereto, and a connection point with the first current path on the annular current path. In a vacuum shield disconnector having a second current path extending in the direction of the axial center within the electrode plate and connected by circular arcs separated by It comes from setting up your body.
以下、第４図の実施例にて本発明の平行磁界電
極１３Ａを詳細に説明する。第４図において、電
極板１１には、溝１６ａ，１６ｂ，１６ｃ，１６
ｄを切り込んで構成された半径方向の第２電流通
路１４ａ，１４ｂがあるのは、第２図の場合と同
じである。ところで、環状電流通路１３には、第
１の電流通路１２ａ，１２ｂとの接続点Ａ，Ｂに
て区切られた２つの円弧上の中間点Ｃ，Ｄに突部
１５ａ，１５ｂが設けられていて、この突部１５
ａ，１５ｂに連続して一体に、通電補強体１７
ａ，１７ｂが設けられている。つまり、通電補強
体１７ａ，１７ｂは環状電流通路側に突出し、か
つ環状電流通路より半径方向軸中心に向つい延び
ている。この通電補強体１７ａ，１７ｂは、電極
板１１内の第２の半径方向電流通路に沿つて、ろ
う付等により接合される。しかもこの通電補強体
は、第１の半径方向電流通路や環状の電流通路と
同じ材質の銅などの良導体で構成される。その結
果、電流の大部分は、この通電補強体１７ａ，１
７ｂを流れることになり、電極板１１内の電流通
路１４ａ，１４ｂでの発熱は十分に低く抑制され
る。
Hereinafter, the parallel magnetic field electrode 13A of the present invention will be explained in detail using the embodiment shown in FIG. In FIG. 4, the electrode plate 11 has grooves 16a, 16b, 16c, 16
As in the case of FIG. 2, there are second radial current paths 14a and 14b formed by cutting d. By the way, the annular current path 13 is provided with protrusions 15a and 15b at intermediate points C and D on two circular arcs separated by connection points A and B with the first current paths 12a and 12b. , this protrusion 15
Continuously and integrally with a and 15b, a current-carrying reinforcing body 17 is provided.
a, 17b are provided. That is, the current-carrying reinforcing bodies 17a and 17b protrude toward the annular current path and extend toward the radial axis from the annular current path. The current reinforcing bodies 17a, 17b are joined together by brazing or the like along the second radial current path within the electrode plate 11. Moreover, this current reinforcing body is made of a good conductor such as copper, which is the same material as the first radial current path and the annular current path. As a result, most of the current flows through these current-carrying reinforcing bodies 17a, 1
7b, and the heat generation in the current paths 14a and 14b in the electrode plate 11 is suppressed to a sufficiently low level.
従つて、大きな負荷電流でも回路に過度の温度
上昇をもたらすことなく、通電することが可能に
なつている。 Therefore, even a large load current can be applied without causing an excessive temperature rise in the circuit.
平行磁界発生電極を流れる電流ｉは、環状電流
通路１３から第２電流通路１４に流れる時、第２
電流通路１４の高さ位置は、環状電流通路１３の
高さ位置より高い位置にある。このため、環状電
流通路１３と第２電流通路１４との間の電流通路
は、電気的等価回路としてみれば傾斜しているこ
とになる。これを傾斜電流通路３０Ａとすれば、
傾斜電流通路３０Ａを流れる電流ｉにより発生し
た平行磁界H1は、中間シールド方向に傾斜して
いる。つまり傾斜平行磁界H1となる。傾斜平行
磁界H1はアークと衝突する距離が短かく消弧す
る率が少ないと共に、中間シールドを溶損し、真
空しや断器のしや断性能を向上し得ない。 When the current i flowing through the parallel magnetic field generating electrodes flows from the annular current path 13 to the second current path 14, the current i flows through the second current path 14.
The height position of the current path 14 is higher than the height position of the annular current path 13. Therefore, the current path between the annular current path 13 and the second current path 14 is inclined when viewed as an electrical equivalent circuit. If this is made into a slanted current path 30A, then
The parallel magnetic field H 1 generated by the current i flowing through the inclined current path 30A is inclined in the direction of the intermediate shield. In other words, it becomes an inclined parallel magnetic field H1 . The inclined parallel magnetic field H 1 collides with the arc at a short distance and has a low arc extinguishing rate, and also melts and damages the intermediate shield, making it impossible to improve the cutting performance of the vacuum shield and breaker.
しかし、本願発明の通電補強体１７は、第２電
流通路１４に設け、かつ環状電流通路側に突出し
て形成した。この結果、通電補強体１７は、環状
電流通路側に接近し、本願発明の傾斜電流通路３
０Ｂの傾斜角度θ1は、傾斜電流通路３０Ａの傾斜
角度θ2より小さく、傾斜平行磁界H2の傾きは、
傾斜平行磁界H1の傾斜より導電棒の延びる方向
つまり平行磁界に近ずき、アークと衝突する距離
が長くなり、アークを消弧する効率がよくなると
共に、中間シールドを溶損しにくくなり、しや断
性能を向上することができる。第５図は、本発明
の他の実施例である。電極１１内の半径方向電流
通路１４ａ，１４ｂの裏側に、これに沿つて長方
形の通電補強体１８ａ，１８ｂが接着されてお
り、これに環状電流通路の突部１５ａ，１５ｂが
接続される。第６図は、第５図のXOY断面図で
あり、通電補強体１８ａ，１８ｂは、半径方向電
流通路１４ａ，１４ｂの全域に亘つて設けられて
いる。 However, the current reinforcing body 17 of the present invention is provided in the second current path 14 and is formed to protrude toward the annular current path side. As a result, the current-carrying reinforcing body 17 approaches the annular current path side, and the inclined current path 3 of the present invention approaches the annular current path side.
The inclination angle θ 1 of 0B is smaller than the inclination angle θ 2 of the inclined current path 30A, and the inclination of the inclined parallel magnetic field H 2 is
The gradient of the parallel magnetic field H1 approaches the direction in which the conductive rod extends, that is, the parallel magnetic field, and the distance of collision with the arc becomes longer, which increases the efficiency of extinguishing the arc, and makes it difficult to melt the intermediate shield, making it more flexible. The cutting performance can be improved. FIG. 5 shows another embodiment of the invention. Rectangular current-carrying reinforcing bodies 18a, 18b are bonded to the back side of the radial current paths 14a, 14b in the electrode 11 along this, to which the protrusions 15a, 15b of the annular current path are connected. FIG. 6 is an XOY sectional view of FIG. 5, and the current reinforcing bodies 18a, 18b are provided over the entire area of the radial current paths 14a, 14b.
この実施例においても、第４図の実施例と全く
同じように、電流の大部分は良導体の通電補強体
１８ａ，１８ｂを流れるので、半径方向電流通路
１４ａ，１４ｂでの温度上昇を十分に低く抑制で
きる。 In this embodiment, as in the embodiment shown in FIG. 4, most of the current flows through the reinforcing members 18a and 18b, which are good conductors, so that the temperature rise in the radial current paths 14a and 14b is kept sufficiently low. It can be suppressed.
以上説明したように、要するに本発明は、導電
率の比較的小さい材料で構成された電極板内に設
けられた、半径方向電流通路に対して、その裏側
に良導体よりなる通電補強体をろう付け等により
接着せしめたものであるから、負荷電流通電時に
おける電極板内の半径方向電流通路部での発熱が
十分に低く抑制され、大きな負荷電流の通電が可
能になる。
As explained above, in short, the present invention involves brazing a current-carrying reinforcing body made of a good conductor on the back side of a radial current path provided in an electrode plate made of a material with relatively low conductivity. Since the electrode plates are bonded together by bonding, heat generation in the radial current path portion in the electrode plate when a load current is applied is suppressed to a sufficiently low level, and a large load current can be applied.
第１図は従来の真空しや断器の側断面図、第２
図は第１図に使用した電極の例の斜視図、第３図
は電流軌跡と磁界の説明図、第４図は本発明の実
施例として示した電極の斜視図、第５図は本発明
の他の実施例として示した電極の斜視図、第６図
は第５図電極のXOY線断面図、第７図は第４図
の電気的等価回路である。
１……真空しや断器、２……筒体２、３……端
板、４……端板、５……真空容器、６……導電
棒、７……導電棒、８……固定電極、９……可動
電極、１０……ベローズ、１１……電極板、１２
……第１の半径方向電流通路、１３……環状電流
通路、１４……第２の半径方向電流通路、１５…
…突部、１６……溝、１７……通電補強体、１８
……通電補強体。
Figure 1 is a side sectional view of a conventional vacuum cutter, Figure 2
The figure is a perspective view of an example of the electrode used in Figure 1, Figure 3 is an explanatory diagram of the current trajectory and magnetic field, Figure 4 is a perspective view of an electrode shown as an example of the present invention, and Figure 5 is a perspective view of the electrode used in the present invention. 6 is a sectional view taken along the XOY line of the electrode shown in FIG. 5, and FIG. 7 is an electrical equivalent circuit of FIG. 4. 1... Vacuum shield disconnector, 2... Cylindrical body 2, 3... End plate, 4... End plate, 5... Vacuum container, 6... Conductive rod, 7... Conductive rod, 8... Fixed Electrode, 9... Movable electrode, 10... Bellows, 11... Electrode plate, 12
... first radial current path, 13 ... annular current path, 14 ... second radial current path, 15 ...
... Protrusion, 16 ... Groove, 17 ... Current-carrying reinforcement, 18
...Electric reinforcing body.
Claims (1)
に導電棒をそれぞれ取付けた平行磁界電極、上記
平行磁界電極は、一端が導電棒に接続し、他端が
半径方向に向う第１電流通路と、第１電流通路の
他端と接続し、導電棒を包囲する環状電流通路
と、第１電流通路と環状電流通路との接続点で区
切られた各円弧部の中間点と、中間点から電極板
内を導電棒方向に向う第２電流通路とを備えた電
流通路を形成し、電流通路を流れる電流によつて
生ずる磁界がアークに対して平行な磁界となる電
極において、上記第２電流通路裏面に環状電流通
路側に突出する電気的良導体から成る通電補強体
を設けることを特徴とする真空しや断器。1 Parallel magnetic field electrode with an electrode plate for igniting an arc attached to one side and a conductive rod attached to the other side.The parallel magnetic field electrode has one end connected to the conductive rod and the other end connected to the first current directed in the radial direction. a passage, an annular current passage that connects to the other end of the first current passage and surrounds the conductive rod, and a midpoint between each arcuate portion separated by a connection point between the first current passage and the annular current passage; and a second current path extending in the direction of the conductive rod within the electrode plate, and the magnetic field generated by the current flowing through the current path becomes a magnetic field parallel to the arc. A vacuum shield breaker characterized in that a current carrying reinforcing body made of a good electrical conductor is provided on the back side of the current path and protrudes toward the annular current path side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP196584A JPS59217919A (en) | 1984-01-11 | 1984-01-11 | Vacuum cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP196584A JPS59217919A (en) | 1984-01-11 | 1984-01-11 | Vacuum cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59217919A JPS59217919A (en) | 1984-12-08 |
| JPS6329369B2 true JPS6329369B2 (en) | 1988-06-13 |
Family
ID=11516292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP196584A Granted JPS59217919A (en) | 1984-01-11 | 1984-01-11 | Vacuum cutter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59217919A (en) |
-
1984
- 1984-01-11 JP JP196584A patent/JPS59217919A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59217919A (en) | 1984-12-08 |
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