JPS6245403Y2 - - Google Patents
Info
- Publication number
- JPS6245403Y2 JPS6245403Y2 JP1980177274U JP17727480U JPS6245403Y2 JP S6245403 Y2 JPS6245403 Y2 JP S6245403Y2 JP 1980177274 U JP1980177274 U JP 1980177274U JP 17727480 U JP17727480 U JP 17727480U JP S6245403 Y2 JPS6245403 Y2 JP S6245403Y2
- Authority
- JP
- Japan
- Prior art keywords
- shield
- bellows
- vacuum
- electrode rod
- vacuum container
- 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
- 239000002184 metal Substances 0.000 description 11
- 238000010008 shearing Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 230000008602 contraction Effects 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000011109 contamination Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【考案の詳細な説明】
本考案は真空しや断器に係り、特に真空容器内
に接離自在に設けた電極を囲繞するシールドを浮
遊電位としたものにおいて、その耐電圧の向上を
図りつつ真空容器の小型化を図つた真空しや断器
に関する。[Detailed description of the invention] The present invention relates to a vacuum chamber disconnector, and in particular, to a shield that surrounds an electrode that is provided in a vacuum container so as to be freely accessible and detachable, and which has a floating potential, while aiming to improve its withstand voltage. This invention relates to a vacuum chamber and disconnector for reducing the size of a vacuum container.
一般に、真空しや断器においては、同一の大き
さの真空容器でより高い耐電圧のもの、いいかえ
ると同一定格電圧では真空容器がより小さいもの
であることが、その製作コスト、製作工数、製作
価格および小型化の面から望ましいとされてい
る。 In general, for vacuum shields and disconnectors, it is better to have a vacuum container of the same size with a higher withstand voltage, or in other words, a vacuum container with the same rated voltage is smaller. It is considered desirable in terms of price and miniaturization.
しかし、従来の真空しや断器は、真空容器内に
配設した対をなす電極の接離（接触離反）により
生ずる金属蒸気および金属飛沫による絶縁筒内面
等の汚損を防止するとともに、真空容器内の電界
分布の改善を図るべく、通常、第１図に示すよう
に浮遊電位（中間電位）のシールドを２重に設け
たり、または一重の中間シールドを備えている。
すなわち、第１図において総括的に１で示すのは
真空容器で、円筒状に形成したセラミツク等の無
機絶縁材からなる２個の絶縁筒２を端部に植設し
た封着金具３，３、…を介し同軸的に接合すると
ともに円板状の金属端板４（図においては一方の
み示す）により端部を気密に閉塞し、その内部を
高真空に排気して設けられている。真空容器１内
には、一対の電極５，６が、図示しない一方の金
属端板の中央部を貫通して真空容器１に導入され
かつ気密に固着した固定電極棒７と、他方の金属
端板４の中央部に設けた孔８を挿通し、かつ真空
容器１内に配設したベローズ９を介し真空容器１
の気密を保持しつつ固定電極棒７に対して接近離
反自在に導入した可動電極棒１０とにより接離自
在に設けられている。また、真空容器１内には、
前記それぞれの電極５，６および固定、可動電極
棒７，１０を同心状に囲繞するほぼ漏斗状の内シ
ールド１１，１１がそれぞれの内端部を軸方向
（第１図において上下方向）へ適宜に離隔して対
向配置されている。そして、各内シールド１１
は、後述する絶縁支持部材の内面の金属蒸気等に
よる汚損を防止すべく、その外端部付近に漏斗部
１１ａに連設されかつ前記ベローズ９の外径より
大径の円筒状に形成した筒部１１ｂおよび筒部１
１ｂの端部に連設して径方向（第１図において左
右方向）外方へ屈曲しかつ軸方向へさらに屈曲し
た断面Ｌ字形の取付部１１ｃが形成されており、
取付部１１ｃを介して各金属端板４の内面に植設
した絶縁支持部材１２により支持されている。な
お、絶縁支持部材１２は、内シールド１１の筒部
１１ｂの外径より適宜大径の円筒状に形成したセ
ラミツク等の無機絶縁材からなるもので、端部に
植設した取付金具１３，１３によりそれぞれの電
極棒７，１０に対し同心状にして金属端板４に植
設されるとともにそれぞれの内シールド１１を支
持しているものである。さらに、真空容器１内に
は、各シールド１１の内端部付近を囲繞すべくそ
の内端部の外径より適宜大径のほぼ円筒状に形成
した主シールド１４が、その外周中間部付近を各
絶縁筒２を接合する封着金具３，３に挟持された
支持金具１５により支持されている。なお、第１
図において１６は、前記ベローズ９の金属蒸気等
による汚損を防止すべく可動電極棒１０の内端部
付近に固着したベローズシールドである。 However, conventional vacuum shields and disconnectors prevent contamination of the inner surface of the insulating cylinder due to metal vapor and metal droplets caused by contact and separation (contact and separation) of a pair of electrodes arranged inside the vacuum container, and In order to improve the electric field distribution within the device, a floating potential (intermediate potential) shield is usually provided in two layers, as shown in FIG. 1, or a single intermediate shield is provided.
That is, in FIG. 1, the general reference numeral 1 is a vacuum container, and two cylindrical insulating cylinders 2 made of an inorganic insulating material such as ceramic are embedded in the ends of the sealing fittings 3, 3. , . . . are connected coaxially, and the ends are hermetically closed by disk-shaped metal end plates 4 (only one of which is shown in the figure), and the inside thereof is evacuated to a high vacuum. Inside the vacuum vessel 1, a pair of electrodes 5 and 6 are introduced into the vacuum vessel 1 through the central part of one metal end plate (not shown), and a fixed electrode rod 7 is hermetically fixed, and a fixed electrode rod 7 is fixed to the other metal end plate. The vacuum vessel 1 is inserted through a hole 8 provided in the center of the plate 4 and via a bellows 9 disposed inside the vacuum vessel 1.
The movable electrode rod 10 is introduced into the fixed electrode rod 7 so as to be able to move toward and away from the fixed electrode rod 7 while maintaining airtightness. In addition, inside the vacuum container 1,
Approximately funnel-shaped inner shields 11, 11 concentrically surrounding the respective electrodes 5, 6 and the fixed and movable electrode rods 7, 10 extend their respective inner ends in the axial direction (in the vertical direction in FIG. 1) as appropriate. are placed facing each other and separated from each other. And each inner shield 11
is a cylindrical tube connected to the funnel portion 11a near the outer end and having a diameter larger than the outer diameter of the bellows 9, in order to prevent the inner surface of the insulating support member from being contaminated by metal vapor or the like, which will be described later. Part 11b and cylinder part 1
A mounting portion 11c having an L-shaped cross section is formed which is connected to the end of 1b and is bent outward in the radial direction (left and right direction in FIG. 1) and further bent in the axial direction.
It is supported by an insulating support member 12 implanted on the inner surface of each metal end plate 4 via a mounting portion 11c. The insulating support member 12 is made of an inorganic insulating material such as ceramic, and is formed into a cylindrical shape with a suitably larger diameter than the outer diameter of the cylindrical portion 11b of the inner shield 11. The electrode rods 7 and 10 are implanted in the metal end plate 4 concentrically with each other, and support the inner shields 11 of the respective electrode rods 7 and 10. Further, inside the vacuum vessel 1, a main shield 14 formed in a substantially cylindrical shape with a suitably larger diameter than the outer diameter of the inner end to surround the inner end of each shield 11 is provided. It is supported by a support fitting 15 held between sealing fittings 3, 3 that join each insulating cylinder 2 together. In addition, the first
In the figure, reference numeral 16 denotes a bellows shield fixed near the inner end of the movable electrode rod 10 in order to prevent the bellows 9 from being contaminated by metal vapor or the like.
ところが、上述した如き従来の真空しや断器に
おいて、金属蒸気等による絶縁支持部材１２の内
周面の汚損防止を図り、もつて長時間に亘る耐電
圧の安定化を図るためには、内シールド１１にお
ける筒部１１ｂの内径とベローズ９の外径との差
を小さくする必要があるものの、かかる場合に
は、真空しや断器の耐電圧が低下するという相反
する問題が生ずる。なお、一重の中間電位のシー
ルドを用いた場合においても、各絶縁筒２の内面
に対する金属蒸気等による汚損を防止するために
は同様の問題が生ずる。また、真空しや断器の高
電圧化を図るには、電極５，６の開離距離を大き
く取る必要があり、かかる場合にはベローズ９の
長さが大きくなるが、ベローズ９は通常0.1〜0.2
mm程度の薄肉のステンレス材により形成されるの
が普通であるため、その縮小に際し長手方向と直
交する方向から応力を受けた如く蛇行する、いわ
ゆるバツクリング現象を伴つて寿命が著しく低下
する等の問題がある。 However, in the conventional vacuum breaker as described above, in order to prevent the inner circumferential surface of the insulating support member 12 from being contaminated by metal vapor, etc., and to stabilize the withstand voltage over a long period of time, it is necessary to Although it is necessary to reduce the difference between the inner diameter of the cylindrical portion 11b and the outer diameter of the bellows 9 in the shield 11, in such a case, a contradictory problem arises in that the withstand voltage of the vacuum shield and the disconnector decreases. Incidentally, even when a single intermediate potential shield is used, a similar problem occurs in order to prevent the inner surface of each insulating cylinder 2 from being contaminated by metal vapor or the like. In addition, in order to increase the voltage of the vacuum switch or disconnector, it is necessary to increase the separation distance between the electrodes 5 and 6, and in such a case, the length of the bellows 9 becomes large, but the length of the bellows 9 is usually 0.1 ~0.2
Since it is normally made of stainless steel material with a thickness of about mm, when it shrinks, it meanders as if under stress from a direction perpendicular to the longitudinal direction, which is the so-called buckling phenomenon, resulting in a significant reduction in service life. There is.
本考案は上述した問題に鑑みてなされたもの
で、その目的とするところは、真空容器内に、一
対の電極をこの真空容器に導入されかつ気密に固
着した固定電極棒と真空容器内に配設したベロー
ズを介し固定電極棒に対し接近離反自在にしてか
つ気密に導入した可動電極棒とにより接離自在に
設けるとともに、前記それぞれの電極を同心状に
囲繞しかつ一部に前記ベローズと近接する小径部
を有するシールドを絶縁支持部材を介して配設し
てなる真空しや断器において、同一定格電圧下に
おける真空容器の小型化を図り得るとともに、ベ
ローズの伸縮寿命を向上し得るようにした真空し
や断器を提供するにある。 The present invention was devised in view of the above-mentioned problems, and its purpose is to place a pair of electrodes in a vacuum vessel, a fixed electrode rod that is introduced into the vacuum vessel, and a fixed electrode rod that is airtightly fixed to the vacuum vessel. The fixed electrode rod can be freely approached and separated from the fixed electrode rod through a bellows provided therein, and the movable electrode rod can be moved toward and away from the fixed electrode rod introduced airtightly. In a vacuum shield and disconnector in which a shield having a small diameter portion is disposed via an insulating support member, the vacuum vessel can be made smaller under the same rated voltage, and the expansion and contraction life of the bellows can be improved. We provide vacuum cleaners and disconnectors.
以下、第２図以降の図面を参照してこの考案の
実施例を詳細に説明する。なお、以下の説明にお
ける各実施例の真空しや断器において、前述した
従来のものの構成部材と同一機能を奏する構成部
材には同一符号を付すこととしその説明を省略す
る。 Hereinafter, embodiments of this invention will be described in detail with reference to the drawings from FIG. 2 onwards. In addition, in the vacuum shield disconnector of each embodiment in the following description, the same reference numerals are given to the constituent members having the same function as the constituent members of the conventional one described above, and the explanation thereof will be omitted.
第１図および第２図はそれぞれ本考案に係る第
１実施例の真空しや断器の投入状態およびしや断
状態における要部の縦断面で、この実施例の真空
しや断器においては、投入、しや断操作時、特に
しや断状態における内シールド１１の最小径部、
すなわち筒部１１ｂとこれと対向するベローズ９
の中間部付近との間隙を、内シールド１１とベロ
ーズ９とが分担する真空中における絶縁破壊を起
さない距離より適宜大きくなるようにしてある。
すなわち、ベローズ９における内シールド１１の
筒部１１ｂと対向する部分には、両端に設けた波
形部９ａ，９ｂと連設し、それぞれの内径より適
宜小径の円筒状に形成した筒部９ｃが一体的に設
けられている。そして、ベローズ９における内端
側の波形部９ａは、第３図に示すす如きしや断状
態において、その１山がベローズシールド１６か
ら突出するように設けられるとともに、このベロ
ーズシールド１６から突出した１山と内シールド
１１の間隙ｅ（第３図参照）が内シールド１１の
漏斗部１１ａとの間において最小となるように設
けられているものであり、この間隙ｅは、真空中
において内シールド１１とベローズ９とが分担す
る電圧によつて絶縁破壊を生じない最小の寸法で
ある。 FIGS. 1 and 2 are vertical cross-sections of essential parts of the vacuum shear breaker of the first embodiment of the present invention in the closed state and the shrunken state, respectively. , the minimum diameter part of the inner shield 11 during the closing and crinkling operations, especially in the crinkling state,
That is, the cylindrical portion 11b and the bellows 9 facing thereto
The gap between the inner shield 11 and the bellows 9 is set to be appropriately larger than the distance shared between the inner shield 11 and the bellows 9 that does not cause dielectric breakdown in a vacuum.
That is, in the portion of the bellows 9 that faces the cylindrical portion 11b of the inner shield 11, there is integrally formed a cylindrical portion 9c which is connected to the corrugated portions 9a and 9b provided at both ends and formed into a cylindrical shape having an appropriately smaller diameter than the respective inner diameters. It is set up as follows. The corrugated portion 9a on the inner end side of the bellows 9 is provided so that one peak of the corrugated portion 9a protrudes from the bellows shield 16 in the shattered state shown in FIG. The gap e (see FIG. 3) between the inner shield 11 and the funnel part 11a of the inner shield 11 is the minimum between the inner shield 11 and the funnel part 11a of the inner shield 11 in a vacuum. This is the minimum dimension that does not cause dielectric breakdown due to the voltage shared between the bellows 9 and the bellows 9.
なお、上述したしや断状態における内シールド
１１の漏斗部１１ａとベローズシールド１６の端
部との間隙e′は、ベローズシールド１６から突出
したベローズ９における内端の波形部９の１山と
内シールド１１の漏斗部１１ａとの間隙ｅより小
さくなるのは勿論であり、また、ベローズ９にお
ける外端側の波形部９ｂの最内側の１山と内シー
ルド１１の取付部１１ｃ等との間隙は、第２図に
示す如き投入状態においては、しや断状態程問題
は少ないものの、上述したベローズ９と内シール
ド１１との間隙ｅとほぼ同等となるように外端側
の波形部９ｂの山数を設けてあるものである。ま
た、しや断状態における内シールド１１の筒部１
１ｂの内半径ａとベローズ９の筒部９ｃの内半径
ｂとの差Ｃは、Ｃ＝ａ−ｂ≦2eなる関係を保持し
た際に、静耐電圧および動耐電圧に対して満足す
る結果を得ることができることが実験により判明
した。 Note that the gap e' between the funnel part 11a of the inner shield 11 and the end of the bellows shield 16 in the above-mentioned shrunken state is between one peak of the corrugated part 9 at the inner end of the bellows 9 protruding from the bellows shield 16, and the inner Needless to say, the gap e between the funnel part 11a of the shield 11 is smaller than the gap e, and the gap between the innermost peak of the corrugated part 9b on the outer end side of the bellows 9 and the mounting part 11c of the inner shield 11 is In the closed state as shown in FIG. 2, although the problem is less than in the shrunken state, the peaks of the corrugated portion 9b on the outer end side are adjusted so that the gap e between the bellows 9 and the inner shield 11 is approximately equal to A number is set. Moreover, the cylindrical portion 1 of the inner shield 11 in the shrunken state
The difference C between the inner radius a of the bellows 9 and the inner radius b of the cylindrical portion 9c of the bellows 9 satisfies the static withstand voltage and dynamic withstand voltage when the relationship C=a-b≦2e is maintained. Experiments have shown that it is possible to obtain
第４図は本考案に係る第２実施例の真空しや断
器の要部の縦断面図で、この実施例の場合は、ベ
ローズ９における内端側の波形部９ａの山数を、
前述した第１実施例のもののベローズ９のそれよ
に更に少なくしてある。このようにすることによ
り、しや断時の最小間隙ｅをより余裕をもつてと
ることができ、かつベローズ９と内シールド１１
との間隙の縮小、換言すれば真空容器の外径を縮
小することができるとともに、しや断操作時にお
ける慣性を小さくすることができ、かつベローズ
シールド１６の小型、軽量化を図ることができ
る。 FIG. 4 is a vertical cross-sectional view of the main parts of a vacuum shield disconnector according to a second embodiment of the present invention.
The number of bellows 9 is further reduced compared to that of the first embodiment described above. By doing this, the minimum gap e at the time of shearing can be secured with more margin, and the bellows 9 and the inner shield 11
In other words, the outer diameter of the vacuum container can be reduced, the inertia during the shearing operation can be reduced, and the bellows shield 16 can be made smaller and lighter. .
第５図は本考案に係る第３実施例の真空しや断
器の要部の縦断面図で、この実施例の場合は、ベ
ローズ９における両端の波形部９ａ，９ｂの各谷
および山の内外径を、筒部９ｃ側に向つて漸次小
径となるように設けるとともに、内端側の波形部
９ａの外径面を内シール１１の漏斗部１１ａと平
行になるようにしてある。なお、外端側の波形部
９ｂは、前述した第１、第２実施例と同様に各谷
および山の内径がそれぞれ同一となるように設け
てもよいものである。このようにすることによ
り、しや断時の最小間隙ｅを更に余裕をもつてと
ることができ、ベローズ９と内シールド１１との
間隙、換言すれば真空容器の外径を縮小すること
ができるとともに、しや断操作時におけるベロー
ズ９の慣性を小さくし得、かつベローズシールド
１６の小型、軽量化を図ることができる。さら
に、ベローズ９のばね定数が高くなり、いわゆる
バツクリング現象を効果的に防止することができ
る。 FIG. 5 is a vertical cross-sectional view of the main parts of the vacuum shield breaker according to the third embodiment of the present invention. The inner and outer diameters are set to gradually become smaller toward the cylindrical portion 9c, and the outer diameter surface of the corrugated portion 9a on the inner end side is parallel to the funnel portion 11a of the inner seal 11. Note that the waveform portion 9b on the outer end side may be provided so that the inner diameters of each valley and peak are the same, as in the first and second embodiments described above. By doing so, the minimum gap e at the time of shearing can be further increased, and the gap between the bellows 9 and the inner shield 11, in other words, the outer diameter of the vacuum container can be reduced. At the same time, the inertia of the bellows 9 during the shearing operation can be reduced, and the bellows shield 16 can be made smaller and lighter. Furthermore, the spring constant of the bellows 9 is increased, so that the so-called buckling phenomenon can be effectively prevented.
なお、前述した第１、第２および第３実施例の
真空しや断器におけるベローズ９は、肉厚を一様
にして形成した場合について述べたが、これに限
定されるものでははく、たとえば第６図に示すよ
うに、筒部９ｃにおける肉厚を両端の波形部９
ａ，９ｂにおけるそれより大きくしてもよいもの
であり、このようにすることにより、いわゆるバ
ツクリング現象を一層効果的に防止することがで
きる。また、各実施例のものにおけるベローズ９
の波形部９ａ、筒部９ｃおよび波形部９ｂは、一
体成形により形成してもよく、あるいはおのおの
別個に成形したものを一体的に連結してもよいも
のである。さらに、各実施例の真空しや断器にお
いては、シールド１１，１４を二重にした場合に
ついて詳述したが、これに限らず、たとえば中間
電位となるように支持した一重のシールドの場合
であつても同様のことがいえるものであり、ま
た、中間電位となるように支持され、かつ円筒状
に形成されるとともにその両端に内側へ湾曲した
断面ほぼ円形の応力緩和部、すなわち小径部を有
するシールドについても同様である。 Although the bellows 9 in the vacuum shield disconnectors of the first, second, and third embodiments described above are formed with a uniform wall thickness, the bellows 9 is not limited to this. For example, as shown in FIG. 6, the wall thickness of the cylindrical portion 9c is
It may be made larger than that in a and 9b, and by doing so, the so-called buckling phenomenon can be more effectively prevented. In addition, the bellows 9 in each example
The corrugated portion 9a, the cylindrical portion 9c, and the corrugated portion 9b may be formed by integral molding, or may be formed separately and then integrally connected. Furthermore, in the vacuum shield and disconnector of each embodiment, the case where the shields 11 and 14 are doubled is described in detail, but the invention is not limited to this, and for example, a case where a single shield is supported so as to have an intermediate potential may be used. The same thing can be said even if the stress relaxation part is supported at an intermediate potential, is formed in a cylindrical shape, and has a nearly circular cross section curved inward at both ends, that is, a small diameter part. The same applies to the shield that has.
以上の如く本考案は、真空容器内に、一対の電
極をこの真空容器に導入されかつ気密に固着した
固定電極棒と真空容器内に配設したベローズを介
し固定電極棒に対し接近離反自在にしてかつ気密
に導入した可動電極棒とにより接触離反自在に設
けるとともに、前記それぞれの電極を同心状に囲
繞しかつ一部に前記ベローズと近接する小径部を
有する筒状のシールドを絶縁支持部材を介し配設
してなるものにおいて、前記ベローズにおけるシ
ールドの小径部と対向する部分を円筒状の筒部と
した真空しや断器であるから、真空容器内におけ
るベローズとシールドとの間の耐電圧の向上を図
りつつ真空容器の外径の縮小、ひいては真空しや
断器自体を小型化することができる。また、ベロ
ーズのバツクリング現象が防止されるので、その
伸縮寿命ひいては真空しや断器の寿命を向上でき
るとともに、真空容器、特に絶縁筒の小径化に伴
つて真空しや断器の価格を低減できる等の効果を
奏する。 As described above, the present invention allows a pair of electrodes to be introduced into the vacuum container and moved toward and away from the fixed electrode rod through the fixed electrode rod that is airtightly fixed and the bellows arranged inside the vacuum container. A cylindrical shield that concentrically surrounds each of the electrodes and has a small diameter portion adjacent to the bellows is provided with an insulating support member. In the case where the bellows is disposed through the shield, since the part of the bellows opposite to the small diameter part of the shield is a cylindrical part, the withstand voltage between the bellows and the shield in the vacuum container is It is possible to reduce the outer diameter of the vacuum container and further downsize the vacuum chamber and disconnector itself while improving the efficiency. In addition, since the buckling phenomenon of the bellows is prevented, the expansion and contraction life of the bellows and thus the life of the vacuum breaker and disconnector can be improved, and the cost of the vacuum breaker and disconnector can be reduced as the diameter of the vacuum vessel, especially the insulating tube, is reduced. It has the following effects.
第１図は一部を破断、省略した従来の真空しや
断器の縦断面図、第２図および第３図はそれぞれ
本考案に係る第１実施例の真空しや断器の投入状
態およびしや断状態における要部の縦断面図、第
４図および第５図はそれぞれ本考案に係る第２実
施例および第３実施例の真空しや断器の要部の縦
断面図、第６図は本考案の要部の更に他の実施例
の縦断面図である。
１……真空容器、２……絶縁筒、５，６……電
極、７……固定電極棒、９……ベローズ、９ｃ…
…筒部、１０……可動電極棒、１１……内シール
ド、１１ｂ……筒部、１２……絶縁支持部材、１
４……主シールド。
FIG. 1 is a longitudinal cross-sectional view of a conventional vacuum shear breaker with some parts cut away and omitted, and FIGS. 2 and 3 are respectively the closed state and FIGS. 4 and 5 are vertical sectional views of the main parts of the vacuum shear breakers of the second and third embodiments of the present invention, respectively, in the shattered state, and FIGS. The figure is a longitudinal sectional view of still another embodiment of the main part of the present invention. 1... Vacuum container, 2... Insulating tube, 5, 6... Electrode, 7... Fixed electrode rod, 9... Bellows, 9c...
... Cylinder part, 10 ... Movable electrode rod, 11 ... Inner shield, 11b ... Cylinder part, 12 ... Insulating support member, 1
4...Main shield.
Claims (1)
入されかつ気密に固着した固定電極棒と真空容器
内に配設したベローズを介し固定電極棒に対し接
近離反自在にしてかつ気密に導入した可動電極棒
とにより接触離反自在に設けるとともに、前記そ
れぞれの電極を同心状に囲繞しかつ一部に前記ベ
ローズと近接する小径部を有する筒状のシールド
を絶縁支持部材を介し配設してなるものにおい
て、前記ベローズを前記シールドと同心状に設け
ると共にシールドの小径部を貫通して設け、該ベ
ローズにおけるシールドの小径部と対向する部分
を円筒状の筒部としたことを特徴とする真空しや
断器。 A pair of electrodes are introduced into the vacuum container and are airtightly fixed to the fixed electrode rod, and a movable electrode is introduced into the vacuum container so that the electrodes can freely approach and leave the fixed electrode rod via a bellows arranged in the vacuum container. A cylindrical shield is provided so as to be able to come into contact with and separate from the electrode rod, and a cylindrical shield that concentrically surrounds each of the electrodes and has a small diameter portion that is partially adjacent to the bellows is disposed through an insulating support member. In the vacuum chamber, the bellows is provided concentrically with the shield and extends through a small diameter portion of the shield, and a portion of the bellows that faces the small diameter portion of the shield is a cylindrical portion. Disconnector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980177274U JPS6245403Y2 (en) | 1980-12-10 | 1980-12-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980177274U JPS6245403Y2 (en) | 1980-12-10 | 1980-12-10 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5799342U JPS5799342U (en) | 1982-06-18 |
| JPS6245403Y2 true JPS6245403Y2 (en) | 1987-12-04 |
Family
ID=29971007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980177274U Expired JPS6245403Y2 (en) | 1980-12-10 | 1980-12-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6245403Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003132770A (en) * | 2001-10-23 | 2003-05-09 | Hitachi Ltd | Vacuum circuit breaker |
| WO2011117914A1 (en) * | 2010-03-24 | 2011-09-29 | 株式会社 日立製作所 | Vacuum valve and switchgear equipped with said vacuum valve |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5818178Y2 (en) * | 1977-01-26 | 1983-04-13 | 三菱電機株式会社 | Vacuum cutter |
| JPS53157865U (en) * | 1977-05-18 | 1978-12-11 |
-
1980
- 1980-12-10 JP JP1980177274U patent/JPS6245403Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5799342U (en) | 1982-06-18 |
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