JPH0821295B2 - Vacuum switch tube - Google Patents
Vacuum switch tubeInfo
- Publication number
- JPH0821295B2 JPH0821295B2 JP23529290A JP23529290A JPH0821295B2 JP H0821295 B2 JPH0821295 B2 JP H0821295B2 JP 23529290 A JP23529290 A JP 23529290A JP 23529290 A JP23529290 A JP 23529290A JP H0821295 B2 JPH0821295 B2 JP H0821295B2
- Authority
- JP
- Japan
- Prior art keywords
- shield member
- vacuum
- metal
- switch tube
- vacuum switch
- 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 - Lifetime
Links
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
- H01H33/662—Housings or protective screens
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
- H01H2033/66269—Details relating to the materials used for screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】 〔産業上の利用分野〕 この発明は、多数回の大電流遮断が可能な真空スイッ
チ管に関するものである。Description: TECHNICAL FIELD The present invention relates to a vacuum switch tube capable of interrupting a large current many times.
第３図は例えば特開昭57−154726号公報に示された従
来の真空スイッチ管を示す断面側面図であり、図におい
て、１はセラミック等の絶縁物から成り10-4Torrの高真
空に排気された真空容器、２は真空容器１の固定側端
板、３は真空容器１の可動側端板、４は一端が可動側端
板３に接続されたベローズ、５は固定側端板２を貫通す
る固定電極棒、６は可動側端板３を貫通しベローズ４の
他端が接続された可動電極棒、７は固定電極、８は可動
電極であり、それぞれ固定電極棒５、可動電極棒６の先
端に固着されている。９は真空容器１と固定電極７、可
動電極８との間に設けられて固定電極７、可動電極８を
囲むように成されたシールド部材であり、その上下端両
部に径小部9aが形成されている。FIG. 3 is a sectional side view showing a conventional vacuum switch tube disclosed in, for example, Japanese Patent Application Laid-Open No. 57-154726. In the figure, 1 is made of an insulating material such as ceramics and has a high vacuum of 10 −4 Torr. The evacuated vacuum container, 2 is a fixed end plate of the vacuum container 1, 3 is a movable end plate of the vacuum container 1, 4 is a bellows whose one end is connected to the movable end plate 3, and 5 is a fixed end plate 2 A fixed electrode rod 6 which penetrates through the movable side end plate 3 and the other end of the bellows 4 is connected to the movable electrode rod 7, a fixed electrode 8 and a movable electrode, which are the fixed electrode rod 5 and the movable electrode, respectively. It is fixed to the tip of the rod 6. Reference numeral 9 denotes a shield member provided between the vacuum container 1 and the fixed electrode 7 and the movable electrode 8 so as to surround the fixed electrode 7 and the movable electrode 8, and a small diameter portion 9a is provided at both upper and lower ends thereof. Has been formed.
次に動作について説明する。 Next, the operation will be described.
第３図のように固定電極７と可動電極８とが離れた電
流遮断状態において、真空容器１の外部から可動電極棒
６を操作して、この可動電極棒６を図の上方向に移動さ
せ、固定電極７に接触させることにより、通電状態とな
る。When the fixed electrode 7 and the movable electrode 8 are separated from each other as shown in FIG. 3, the movable electrode rod 6 is operated from the outside of the vacuum container 1 to move the movable electrode rod 6 upward in the figure. , Is brought into an energized state by bringing it into contact with the fixed electrode 7.
シールド部材９に、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を付着させることにより、
真空容器１の内面が汚損されるのを防止している。この
シールド部材９の材料としては、耐電圧性能の良いステ
ンレスが一般的に使用されている。また、真空容器１へ
の汚損をより効果的に防止するために、シールド部材９
の両端部は、径小部9a,9bとなっている。By attaching the metal vapor generated from the fixed electrode 7 and the movable electrode 8 to the shield member 9 when opening and closing the current,
The inner surface of the vacuum container 1 is prevented from being contaminated. As a material for the shield member 9, stainless steel having good withstand voltage performance is generally used. In addition, in order to prevent the vacuum container 1 from being soiled more effectively, the shield member 9
Both ends of the are small diameter parts 9a and 9b.
また、ベローズ４は可動側端板３と可動電極棒６との
間に設けられていて、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。Further, the bellows 4 is provided between the movable side end plate 3 and the movable electrode rod 6, and enables the fixed electrode 7 and the movable electrode 8 to come into contact with and separate from each other while maintaining the vacuum airtightness inside the vacuum container 1. There is.
（発明が解決しようとする課題〕 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、大電流を多数回遮断した場合、第４図に示すよう
に、シールド部材９の方面に金属蒸気によるスパッタ膜
12が堆積してゆき、このスパッタ膜12の端部が図示のよ
うに次第にシールド部材９からはく離し、極端な場合に
は、固定電極棒5,6等の付近の部材に接触することもあ
った。はく離の原因としては、スパッタ膜12が冷却する
過程で、シールド部材９との熱膨張差により亀裂を生じ
るため、接着力が弱くなり、電圧印加により、帯電して
いるスパッタ膜12がクーロンカによってはく離するとい
うことが考えられる。上記のように、従来の真空スイッ
チ管にはスパッタ膜12のはく離という解決すべき課題が
あった。(Problems to be Solved by the Invention) Since the conventional vacuum switch tube is configured as described above, when a large current is interrupted many times, as shown in FIG. Sputtered film
12 is deposited, the end of the sputtered film 12 is gradually separated from the shield member 9 as shown in the figure, and in extreme cases, it may come into contact with members near the fixed electrode rods 5, 6, etc. It was The cause of the peeling is that the sputtered film 12 is cracked due to a difference in thermal expansion with the shield member 9 in the process of cooling, so that the adhesive force is weakened and the charged sputtered film 12 is peeled off by the coulomb due to the voltage application. It is possible to do it. As described above, the conventional vacuum switch tube has a problem to be solved, that is, peeling of the sputtered film 12.
この発明は上記のような課題を解決するためになされ
たもので、スパッタ膜のはく離をなくし、大電流の多数
回遮断可能な、小形の真空スイッチ管を得ることを目的
とする。The present invention has been made to solve the above problems, and an object of the present invention is to obtain a small vacuum switch tube capable of preventing a sputtered film from peeling off and blocking a large current many times.
請求項（１）の発明に係る真空スイッチ管は、スパッ
タ膜とシールド部材との接着力を強くするために、気孔
を内蔵した金属堆積粒子層をシールド部材の内面の全部
又は少なくとも一方の端部に設けたものである。In the vacuum switch tube according to the invention of claim (1), in order to increase the adhesive force between the sputtered film and the shield member, the metal deposition particle layer containing pores is provided on all or at least one end of the inner surface of the shield member. It was installed in.
請求項（２）の発明に係る真空スイッチ管は、スパッ
タ膜とシールド部材との接着力を強くするために、シー
ルド部材の内面の少なくとも一方の端部にシールド部材
よりも融点の低い金属を設けたものである。In the vacuum switch tube according to the invention of claim (2), a metal having a lower melting point than that of the shield member is provided on at least one end of the inner surface of the shield member in order to strengthen the adhesive force between the sputtered film and the shield member. It is a thing.
請求項（１）の発明における金属堆積粒子層は、スパ
ッタ膜が冷却する過程で生じる熱膨張差に対し、クッシ
ョンの役割を果たす。The metal deposited particle layer in the invention of claim (1) plays a role of a cushion against the difference in thermal expansion generated in the process of cooling the sputtered film.
請求項（２）の発明における金属は、金属蒸気のスパ
ッタ膜により加熱されて溶融することにより、スパッタ
膜と一体的に結合する。The metal in the invention of claim (2) is heated by the sputtered film of metal vapor and melted, so that the metal is integrally combined with the sputtered film.
以下、請求項（１）の発明の一実施例を図について説
明する。第１図においては第３図と同一部分には同一符
号を付して説明を省略する。An embodiment of the invention of claim (1) will be described below with reference to the drawings. In FIG. 1, the same parts as those in FIG. 3 are designated by the same reference numerals and the description thereof will be omitted.
第１図において、10はシールド部材９の内面の全面に
固着されて設けられた気孔を内蔵するNi−Cr等の耐火金
属から成る金属堆積粒子層である。この金属堆積粒子層
10を作る方法としては、例えば溶射による方法がある。
溶射は不活性ガス等を電離させて生じる高温・高速のプ
ラズマジェットや酸素−アセチレン燃焼炎の流れにのせ
て、被膜を作りたい材料を溶融加速して母材に衝突さ
せ、急速に偏平・固化した粒子を次々と積層し、被膜を
形成する方法である。In FIG. 1, reference numeral 10 denotes a metal deposited particle layer made of a refractory metal such as Ni-Cr, which has pores built in and fixedly provided on the entire inner surface of the shield member 9. This metal deposit particle layer
As a method of manufacturing 10, there is a method by thermal spraying, for example.
Spraying is carried out on the flow of a high-temperature, high-speed plasma jet or oxygen-acetylene combustion flame generated by ionizing an inert gas, and the material to be coated is melted and accelerated to collide with the base material, resulting in rapid flattening and solidification. It is a method of forming a coating by laminating the formed particles one after another.
次に動作について説明する。 Next, the operation will be described.
上記のようにして製作した金属堆積粒子層10は、前述
した第４図のスパッタ膜12の冷却過程におけるシールド
部材９との熱膨張の差を、気孔を含む堆積層によって吸
収緩和する能力を有している。このため、スパッタ膜12
は強固に接着し、電圧印加によるはく離や、開閉衝撃に
対する脱落を充分に防ぐことができ、従って大電流の多
数回遮断が可能になる。また、スパッタ膜12のはく離の
恐れがないので、シールド部材９の径を小さくすること
ができるため、真空スイッチ管を小形化することも可能
である。The metal deposited particle layer 10 produced as described above has the ability to absorb and relax the difference in thermal expansion between the sputtered film 12 shown in FIG. 4 and the shield member 9 in the cooling process by the deposition layer including pores. are doing. Therefore, the sputtered film 12
Is firmly adhered, and it is possible to sufficiently prevent peeling due to voltage application and dropout due to opening and closing impacts, and therefore it is possible to interrupt a large current many times. Further, since there is no fear that the sputtered film 12 is peeled off, the diameter of the shield member 9 can be reduced, so that the vacuum switch tube can be downsized.
なお、上記実施例では、金属堆積粒子層10をシールド
部材９の内面の前面に設けたが、スパッタ膜が最もはが
れやすいシールド部材９の内面の両端部又は例えば固定
電極７側の少なくとも一方の端部のみに設けても十分に
効果があり、より経済的である。In the above embodiment, the metal deposition particle layer 10 is provided on the front surface of the inner surface of the shield member 9. However, both end portions of the inner surface of the shield member 9 where the sputtered film is most likely to peel off or at least one end on the fixed electrode 7 side, for example. Even if it is provided only in the section, it is sufficiently effective and more economical.
金属堆積粒子層10の材料としては、Ni−Cr等の耐火金
属を用いた場合、対電圧性能が良くなり、このためシー
ルド部材９の径小部9aをさらに小さくできるので、セラ
ミックから成る真空容器１の内面への汚損防止がより効
果的に行われ、さらに真空スイッチ管全体の小形化が可
能となる。When a refractory metal such as Ni-Cr is used as the material of the metal deposition particle layer 10, the withstand voltage performance is improved, and therefore the small diameter portion 9a of the shield member 9 can be made even smaller. The inner surface of 1 is more effectively prevented from being contaminated, and the entire vacuum switch tube can be downsized.
第２図は請求項（２）の発明の一実施例を示す。11は
シールド部材９の内面の両端部に固着されて設けられた
金属であり、シールド部材９に比べて融点の低い材料が
用いられている。FIG. 2 shows an embodiment of the invention of claim (2). Reference numeral 11 denotes a metal fixedly provided on both ends of the inner surface of the shield member 9, and a material having a melting point lower than that of the shield member 9 is used.
次に動作について説明する。 Next, the operation will be described.
シールド部材９に高温の金属蒸気が付着すると、この
シールド部材９及び金属11が加熱され、融点の低い金属
11が溶融する。スパッタ膜は溶融した金属と結合して一
体化されるので、シールド部材９に強固に固着し、はく
離することがない。When high-temperature metal vapor adheres to the shield member 9, the shield member 9 and the metal 11 are heated, and the metal having a low melting point is heated.
11 melts. Since the sputtered film is combined with the molten metal to be integrated, it is firmly fixed to the shield member 9 and is not peeled off.
なお、シールド部材９の中央部はスパッタ量が多く高
温になりすぎるので、金属11ははく離の生じやすいシー
ルド部材９の内面の両端部に設けている。また、金属11
はシールド部材９の内面の少なくとも一方の端部、例え
ば固定電極７側の端部のみに設けてもよい。Since the central portion of the shield member 9 has a large amount of spatter and becomes too hot, the metal 11 is provided at both end portions of the inner surface of the shield member 9 where peeling easily occurs. Also, metal 11
May be provided on at least one end of the inner surface of the shield member 9, for example, only on the end on the fixed electrode 7 side.
以上のように、請求項（１）の発明はシールド部材の
内面に気孔を内蔵する金属粒子層を設ける構成とし、ま
た請求項（２）の発明は、シールド部材の内面に低融点
金属を設ける構成とした。従って、請求項（１），
（２）の発明によれば、シールド部材からのスパッタ膜
のはく離を有効に防止することができ、これによって大
電流の多数回遮断が可能な小形真空スッイチ管が得られ
る等の効果がある。As described above, the invention of claim (1) provides the inner surface of the shield member with the metal particle layer containing pores, and the invention of claim (2) provides the inner surface of the shield member with the low melting point metal. It was configured. Therefore, claim (1),
According to the invention of (2), peeling of the sputtered film from the shield member can be effectively prevented, and thus, a small vacuum switch tube capable of interrupting a large current many times can be obtained.
第１図は請求項（１）の発明の一実施例による真空スイ
ッチ管を示す断面側面図、第２図は請求項（２）の発明
の一実施例による真空スイッチ管を示す断面側面図、第
３図は従来の真空スイッチ管を示す断面側面図、第４図
はスパッタ膜はがれの状態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、９はシー
ルド部材、10は金属堆積粒子層、11は低融点の金属、12
はスパッタ膜。 なお、図中、同一符号は同一、又は相当部分を示す。1 is a sectional side view showing a vacuum switch tube according to an embodiment of the invention of claim (1), and FIG. 2 is a sectional side view showing a vacuum switch tube according to an embodiment of the invention of claim (2), FIG. 3 is a sectional side view showing a conventional vacuum switch tube, and FIG. 4 is a sectional side view showing a state of sputtered film peeling. 1 is a vacuum container, 7 is a fixed electrode, 8 is a movable electrode, 9 is a shield member, 10 is a metal particle layer, 11 is a low melting point metal, 12
Is a sputtered film. In the drawings, the same reference numerals indicate the same or corresponding parts.
Claims (2)
器内に互いに椄離可能に対向する一対の電極を有し、上
記電極と上記真空容器との間にシールド部材を配置した
真空スイッチ管において、上記シールド部材の内面の全
部又は少なくとも一方の端部に、気孔を内蔵した金属堆
積粒子層を設けたことを特徴とする真空スイッチ管。1. A vacuum switch having a pair of electrodes that are separably opposed to each other in a vacuum container made of an insulating material evacuated to a high vacuum, and a shield member disposed between the electrodes and the vacuum container. A vacuum switch tube characterized in that, in the tube, a metal deposition particle layer containing pores is provided on all or at least one end of the inner surface of the shield member.
器内に互いに椄離可能に対向する一対の電極を有し、上
記電極と上記真空容器との間にシールド部材を配置した
真空スイッチ管において、上記シールド部材の内面の少
なくとも一方の端部に、このシールド部材よりも融点の
低い金属から成る部材を設けたことを特徴とする真空ス
イッチ管。2. A vacuum switch having a pair of electrodes facing each other so as to be separable from each other in a vacuum container made of an insulator evacuated to a high vacuum, and a shield member being arranged between the electrode and the vacuum container. A vacuum switch tube characterized in that a member made of a metal having a melting point lower than that of the shield member is provided on at least one end of the inner surface of the shield member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23529290A JPH0821295B2 (en) | 1990-09-05 | 1990-09-05 | Vacuum switch tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23529290A JPH0821295B2 (en) | 1990-09-05 | 1990-09-05 | Vacuum switch tube |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04115431A JPH04115431A (en) | 1992-04-16 |
| JPH0821295B2 true JPH0821295B2 (en) | 1996-03-04 |
Family
ID=16983952
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23529290A Expired - Lifetime JPH0821295B2 (en) | 1990-09-05 | 1990-09-05 | Vacuum switch tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0821295B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002319342A (en) * | 2001-04-19 | 2002-10-31 | Mitsubishi Electric Corp | Vacuum valve |
| US7123856B2 (en) | 2003-06-25 | 2006-10-17 | Kyocera Mita Corporation | Support structure for image processing apparatus |
| DE102005043484B4 (en) | 2005-09-13 | 2007-09-20 | Abb Technology Ag | Vacuum interrupter chamber |
| JP5537303B2 (en) * | 2010-07-12 | 2014-07-02 | 株式会社東芝 | Vacuum valve |
-
1990
- 1990-09-05 JP JP23529290A patent/JPH0821295B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04115431A (en) | 1992-04-16 |
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