JPH01100837A - Vacuum switch tube - Google Patents
Vacuum switch tubeInfo
- Publication number
- JPH01100837A JPH01100837A JP25697687A JP25697687A JPH01100837A JP H01100837 A JPH01100837 A JP H01100837A JP 25697687 A JP25697687 A JP 25697687A JP 25697687 A JP25697687 A JP 25697687A JP H01100837 A JPH01100837 A JP H01100837A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- fixed
- movable
- switch tube
- melting point
- 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
- 239000000463 material Substances 0.000 claims abstract description 18
- 239000002184 metal Substances 0.000 claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 17
- 238000002844 melting Methods 0.000 claims abstract description 15
- 230000008018 melting Effects 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 abstract description 10
- 239000012212 insulator Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000005520 cutting process Methods 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 4
- 239000010949 copper Substances 0.000 description 3
- 239000011669 selenium Substances 0.000 description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 2
- 229910052797 bismuth Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 229910052711 selenium Inorganic materials 0.000 description 2
- 229910052714 tellurium Inorganic materials 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 229910052745 lead Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 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
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、大電流の通電・遮断を行うのに好適な真空
スイッチに関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a vacuum switch suitable for energizing and interrupting large currents.
第４図及び第５図は、例えば特公昭５１−２５５８６号
公報に示された従来の真空スイッチを示す断面側面図で
あシ、図において、１は絶縁物から成る真空容器、２は
固定端板、４はベローズ、５は固定電極棒、６は可動電
極棒、７は固定電極棒５に固着された固定電極、８は可
動電極棒６に固着された可動電極である。７Ａ（又は８
Ａ）は固定電極７（又は可動電極８）の第１構成部、７
Ｂ（又は８Ｂ）は固定電極７（又は可動電極８）の第２
構成部である。4 and 5 are cross-sectional side views showing a conventional vacuum switch disclosed, for example, in Japanese Patent Publication No. 51-25586. In the figures, 1 is a vacuum container made of an insulating material, and 2 is a fixed end. 4 is a bellows, 5 is a fixed electrode bar, 6 is a movable electrode bar, 7 is a fixed electrode fixed to the fixed electrode bar 5, and 8 is a movable electrode fixed to the movable electrode bar 6. 7A (or 8
A) is the first component of the fixed electrode 7 (or movable electrode 8), 7
B (or 8B) is the second of the fixed electrode 7 (or movable electrode 8)
It is a constituent part.
上記第１の構成部７Ａ（又は８Ａ）は、例えは銅（Ｃｕ
） 、ニッケル（Ｎｉ）等の主成分゛にビスマス（Ｂｉ
） 、テルル（Ｔｅ）、鉛（Ｐｂ） 、 セレン（Ｓｅ
）。The first component 7A (or 8A) is made of copper (Cu), for example.
), nickel (Ni), etc., with bismuth (Bi) as the main component.
), tellurium (Te), lead (Pb), selenium (Se
).
アンチモツ（ｓｂ）等の低融点金属を添加した材質で構
成されている。上記第２の構成部７Ｂ（又は８ｂ）は、
Ｃｕ、Ｎｉ等の材質で構成されている。It is made of a material to which a low melting point metal such as antimony (sb) is added. The second component 7B (or 8b) is
It is made of materials such as Cu and Ni.
上記のような構成を有する真空スイッチ管は、１０−’
Ｔｏｒｒ以下の高真空を長期に亘って維持するｌ、−め
に、４００〜７００℃の高温にて充分に脱ガス、排気し
て製作される。The vacuum switch tube having the above configuration is 10-'
In order to maintain a high vacuum of less than Torr for a long period of time, it is manufactured by sufficiently degassing and exhausting at a high temperature of 400 to 700°C.
次に動作について説明する。Next, the operation will be explained.
可動電極棒６を移動させて可動電極８を固定電極７に接
触させることによシ、可動電極棒６．固定電極棒５間に
電流を通ずることができる。またベローズ４は可動電極
棒６の移動に伴って伸縮し、真空容器１内を高真空状態
に保持するようにしている。By moving the movable electrode rod 6 and bringing the movable electrode 8 into contact with the fixed electrode 7, the movable electrode rod 6. Current can be passed between the fixed electrode rods 5. Further, the bellows 4 expands and contracts as the movable electrode rod 6 moves, and maintains the inside of the vacuum container 1 in a high vacuum state.
このような真空スイッチに用いられる固定電極７及び可
動電極８の電気的性能として、主として次の４つの条件
が要求されている。The following four conditions are mainly required as the electrical performance of the fixed electrode 7 and movable electrode 8 used in such a vacuum switch.
（１）数ＫＡ以上の大電流の通電時において、固定′Ｉ
Ｉｔ極７と可動電極８との過度の溶着を生じないこと。(1) When a large current of several KA or more is applied, the fixed 'I'
Excessive welding between the It electrode 7 and the movable electrode 8 should not occur.
（２）大電流の遮断が可能なこと。(2) Capable of interrupting large currents.
（３）高い耐電圧性能を有すること。(3) Must have high withstand voltage performance.
（４）裁断電流が低いとと。(4) The cutting current is low.
従来の真空スイッチ管は以上のように構成されているの
で、固定？を極７．可動電極８は前記１〜４のような電
気的性能を同時に満たすことを要求されているが、一種
類の材質にて全ての条件を充分に満足することは不可能
であった。例えば、溶着力や裁断電流を低くするために
、０．３ｔｆｉ％のＢｉ 、Ｔｅ 、Ｐｂ 、 Ｓｅ
、 ８ｂ等の低融点金属を含有した一対の電極を用いた
場合、低融点金属によシ耐電圧性能や大電流遮断性能が
劣化する等の問題があった。The conventional vacuum switch tube is configured as above, so is it fixed? The pole 7. Although the movable electrode 8 is required to simultaneously satisfy the electrical performance requirements 1 to 4 above, it has been impossible to fully satisfy all of the conditions using one type of material. For example, in order to lower the welding force and cutting current, 0.3tfi% Bi, Te, Pb, Se
When a pair of electrodes containing a low melting point metal such as .
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、溶着力や裁断電流を低くすることができると
ともに、大電流の遮断も可能な、経済的な真空スイッチ
管を得ることを目的とする。This invention was made to solve the above-mentioned problems, and aims to provide an economical vacuum switch tube that can reduce welding force and cutting current, as well as cut off large currents. purpose.
この発明に係る真空スイッチ管は、固定電極。 The vacuum switch tube according to the present invention has a fixed electrode.
可動電極のような一対の電極のうちの一方の電極のみに
低融点金属を含有する材質を用い、他方の電極には低融
点金属を含有しない材質を用いたものである。A material containing a low melting point metal is used for only one of a pair of electrodes such as a movable electrode, and a material not containing a low melting point metal is used for the other electrode.
この発明における真空スイッチ管は、大電流の通電時に
おいて、一対の電極の接触界面における溶着力が小さく
裁断電流も低い。In the vacuum switch tube of the present invention, when a large current is applied, the welding force at the contact interface between the pair of electrodes is small, and the cutting current is also low.
以下、この発明の一実施例を図について説明する。第１
図において、１は絶縁物で構成された真空容器、（２）
は固定端板、３は可動端板、４はベローズ、５は固定電
極棒、６は可動電極棒、７は固定電極棒５に固着された
固定電極、８は可動電極棒６に固着された可動電極であ
る。９はシールドであり％電流開閉時に固定電極７及び
可動電極８から発生する金属蒸気によυ真空容器１の内
面が汚損されるのを防止している。ベローズ４は可動端
板３と町″ｉＩｈ電極棒５との間に設けられて−て、真
空容器１内部の真空気密を保持しながら固定電極７と可
動電極８との接離を可能にしている。An embodiment of the present invention will be described below with reference to the drawings. 1st
In the figure, 1 is a vacuum container made of an insulator, (2)
3 is a fixed end plate, 3 is a movable end plate, 4 is a bellows, 5 is a fixed electrode bar, 6 is a movable electrode bar, 7 is a fixed electrode fixed to the fixed electrode bar 5, and 8 is fixed to the movable electrode bar 6. It is a movable electrode. A shield 9 prevents the inner surface of the vacuum vessel 1 from being contaminated by metal vapor generated from the fixed electrode 7 and the movable electrode 8 when the current is switched on and off. The bellows 4 is provided between the movable end plate 3 and the electrode rod 5, and allows the fixed electrode 7 and the movable electrode 8 to be brought into contact with each other while maintaining vacuum tightness inside the vacuum container 1. There is.
固定電極７は０．５％以上のＢｉを含有する材質によシ
構成され、可動電極８はＢｉｉ含Ｍしない材質によシ構
成されている。また第２図に示すように、可動電極８は
平坦な接触部８ａとテーパ状の非接触部８ｂとから成る
形状とされている。さらに、可動゛成極８の外径は固定
電極７の外径より大になされている。The fixed electrode 7 is made of a material containing 0.5% or more of Bi, and the movable electrode 8 is made of a material that does not contain Bi and M. Further, as shown in FIG. 2, the movable electrode 8 has a shape consisting of a flat contact portion 8a and a tapered non-contact portion 8b. Furthermore, the outer diameter of the movable polarizer 8 is made larger than the outer diameter of the fixed electrode 7.
次に動作について説明する。Next, the operation will be explained.
上記のように構成された真空スイッチ管は、排気時に高
温にて固定電極７と可動電極８を閉じて排気が行われる
。このとき可動電極８の接触部８ａを中心に固定電極７
から低融点金属Ｂｉの拡散層が形成されるが、非接触部
８ｂにはＢｉがほとんど含まれない分布をもった可動電
極８が形成される。The vacuum switch tube configured as described above is evacuated by closing the fixed electrode 7 and the movable electrode 8 at high temperature. At this time, the fixed electrode 7 is centered around the contact portion 8a of the movable electrode 8.
A diffusion layer of the low-melting point metal Bi is formed, but a movable electrode 8 having a distribution that hardly contains Bi is formed in the non-contact portion 8b.
この真空スイッチ管は、大電流の通電時にお匹て、Ｂｉ
を含有した接触界面での溶着力が小さく、容易に引きは
ずしが可能であった。また裁断現警はＢｉを含有する接
触面で発生するため、裁断電流は低いものであった。さ
らに大電流の遮断については、テーパ状の非接触部８ｂ
が低融点金属を／Ｉｔ４とんど含まないため、可動電極
８の材質の持つ性能にはぼ近いものが得られた。This vacuum switch tube can handle Bi when a large current is applied.
The welding force at the contact interface was small and could be easily removed. Furthermore, since the cutting current occurred on the contact surface containing Bi, the cutting current was low. Furthermore, for interrupting large currents, the tapered non-contact portion 8b
Since the material contains almost no low melting point metal /It4, the performance almost equivalent to that of the material of the movable electrode 8 was obtained.
また、シールド９と可動電極８間の耐電圧性能について
は、可動電極８の外周部になるほどＢｉが含まれないの
で耐電圧が高くなる。このため可動電極８とシールド９
間の距離を狭くすることが可能となり、可動電極８の径
を固定電極７と比べて大きくすることができる。従って
、従来と同一の真空容器１及び同一のシールド径のもの
において、大巾な大電流遮断性能の改善を図ることが可
能となる。なお、可動電極８の接触部８ａを固定電極７
よシも小径とすることによシ、接触部８ａの全面にＢｉ
が拡散するの−で、溶着力及び裁断電流を低くし、安定
した動作を得ることができる。Further, regarding the withstand voltage performance between the shield 9 and the movable electrode 8, the closer to the outer periphery of the movable electrode 8, the less Bi is included, so the withstand voltage becomes higher. Therefore, the movable electrode 8 and the shield 9
It becomes possible to narrow the distance between the electrodes, and the diameter of the movable electrode 8 can be made larger than that of the fixed electrode 7. Therefore, with the same vacuum vessel 1 and the same shield diameter as the conventional one, it is possible to greatly improve the large current interrupting performance. Note that the contact portion 8a of the movable electrode 8 is connected to the fixed electrode 7.
By making the diameter smaller, Bi is applied to the entire surface of the contact portion 8a.
The welding force and cutting current can be lowered and stable operation can be achieved.
な訃、上記実施例では固定電極７はＢｉを含み、可動電
極８はＢｉを含まないとしたが、その逆に可動電極８が
Ｂｉミラみ、固定電極７がＢｉを含゛まないようにして
も同様の効果を奏する。However, in the above embodiment, the fixed electrode 7 contains Bi and the movable electrode 8 does not contain Bi, but conversely, the movable electrode 8 mirrors Bi and the fixed electrode 7 does not contain Bi. The same effect can be achieved.
また上記実施例では、低融点金属としてＢｉを用いたが
、低溶着、低裁断効果がめシ、排気温度で拡散層を生ず
るＴｅ 、Ｐｂ 、Ｓｅ 、Ｓｂ等を用いても同様の効
果を奏する。さらに、上記実施例では、可ｍｔｔ極８に
テーパ状の非接触部８ｂを設けたが、この非接触部８ｂ
は、第３図に示すよう忙平坦な接触部８ａに対して段部
となるように形成してもよい。Further, in the above embodiment, Bi was used as the low melting point metal, but similar effects can be obtained by using Te, Pb, Se, Sb, etc., which have low welding and cutting effects and form a diffusion layer at the exhaust temperature. Further, in the above embodiment, the tapered non-contact portion 8b is provided in the mtt pole 8, but this non-contact portion 8b
As shown in FIG. 3, the contact portion 8a may be formed as a stepped portion with respect to the flat contact portion 8a.
以上のように、この発明によれば、一方の電極に低融点
金属を含有した材質を用い、他方の電極に低融点金属を
含有しない材質を用いた構成としたので、複雑な電極構
造とすることなく、低溶着。As described above, according to the present invention, one electrode is made of a material containing a low melting point metal, and the other electrode is made of a material that does not contain a low melting point metal, resulting in a complex electrode structure. No welding and low welding.
低裁断電流及び大電流遮断性能に優れた真空スイッチ管
を経済的に得られる効果がある。This has the effect of economically obtaining a vacuum switch tube with excellent low cutting current and high current breaking performance.
第１図はこの発明の一実施例による真空スイッチ管を示
す断面図、第２図は電極形状の一実施例を示す断面側面
図、第３図は電極形状の他の実施例を示す断面側面図、
第４図は従来の真空スイッチ管を示す断面側面図、第５
図は従来の真空スイッチ管の電極形状を示す断面側面図
である。
１は真空容器、７は固定電極、８は可動電極。
なお、図中、同一符号は同一、又は相当部分を示す。
特許出願人 三菱電機株式会社
ごガ
代理人 弁理士 １）澤 博 昭１ 。
（外２名）Fig. 1 is a sectional view showing a vacuum switch tube according to an embodiment of the present invention, Fig. 2 is a sectional side view showing one embodiment of the electrode shape, and Fig. 3 is a sectional side view showing another embodiment of the electrode shape. figure,
Figure 4 is a cross-sectional side view showing a conventional vacuum switch tube;
The figure is a cross-sectional side view showing the electrode shape of a conventional vacuum switch tube. 1 is a vacuum container, 7 is a fixed electrode, and 8 is a movable electrode. In addition, in the figures, the same reference numerals indicate the same or equivalent parts. Patent applicant Mitsubishi Electric Corporation Goga agent Patent attorney 1) Hiroshi Sawa 1. (2 others)
Claims (1)
真空スイッチ管において、上記一対の電極の一方の電極
を低融点金属を含有する材質で構成し、他方の電極を上
記低融点金属を含まない材質で構成したことを特徴とす
る真空スイッチ管。In a vacuum switch tube in which a pair of electrodes are provided in a vacuum container so as to be able to come into contact with and separate from each other, one electrode of the pair of electrodes is made of a material containing a low melting point metal, and the other electrode is made of a material containing a low melting point metal. A vacuum switch tube characterized in that it is made of a material that does not contain.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25697687A JPH01100837A (en) | 1987-10-12 | 1987-10-12 | Vacuum switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25697687A JPH01100837A (en) | 1987-10-12 | 1987-10-12 | Vacuum switch tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01100837A true JPH01100837A (en) | 1989-04-19 |
Family
ID=17299990
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25697687A Pending JPH01100837A (en) | 1987-10-12 | 1987-10-12 | Vacuum switch tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01100837A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4276864A1 (en) * | 2022-05-08 | 2023-11-15 | Abb Schweiz Ag | Vacuum interrupter |
-
1987
- 1987-10-12 JP JP25697687A patent/JPH01100837A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP4276864A1 (en) * | 2022-05-08 | 2023-11-15 | Abb Schweiz Ag | Vacuum interrupter |
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