JPS594414Y2 - vacuum switchgear - Google Patents
vacuum switchgearInfo
- Publication number
- JPS594414Y2 JPS594414Y2 JP3565778U JP3565778U JPS594414Y2 JP S594414 Y2 JPS594414 Y2 JP S594414Y2 JP 3565778 U JP3565778 U JP 3565778U JP 3565778 U JP3565778 U JP 3565778U JP S594414 Y2 JPS594414 Y2 JP S594414Y2
- Authority
- JP
- Japan
- Prior art keywords
- vacuum
- inner diameter
- vacuum container
- sealing mechanism
- fixed electrode
- 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
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【考案の詳細な説明】
本考案は真空開閉装置に関し、特に、二重シール真空バ
ルブを有した真空開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum switchgear, and more particularly to a vacuum switchgear with a double-seal vacuum valve.
真空開閉器あるいは真空しゃ断器は高真空を維持した容
器、即ち、真空バルブ内で接続子の開閉を行うものであ
り、高真空中の非常に高い絶縁耐力により開閉ストロー
クを非常に短くする構成を可能にしている。A vacuum switch or vacuum breaker is a device that opens and closes connections inside a container that maintains a high vacuum, that is, a vacuum valve, and has a structure that allows for extremely short opening and closing strokes due to the extremely high dielectric strength in the high vacuum. It makes it possible.
真空バルブの基本的な構造は金属製保護シールドの内部
に位置させられた固定電極可動電極が絶縁筒より成る真
空容器中で開閉させられるものであり、可動電極部の密
封はベローズによって維持されている。The basic structure of a vacuum valve is that a fixed electrode and a movable electrode located inside a metal protective shield are opened and closed in a vacuum container made of an insulating tube, and the movable electrode is kept sealed by a bellows. There is.
しかし、バルブ外面における湿潤や水滴耐着、更には、
結露等によって絶縁耐力が低下したり、ベローズその他
の金属部の腐蝕等によってバルブ自体の真空度が低下し
て短絡等を発生する欠点がある。However, the moisture and water droplet resistance on the outer surface of the valve, and
There are disadvantages in that the dielectric strength decreases due to dew condensation, and the vacuum level of the valve itself decreases due to corrosion of the bellows and other metal parts, resulting in short circuits and the like.
従って、本考案では、真空バルブの周囲条件の変化によ
って絶縁耐力が低下したり、金属ろう何部等の腐蝕によ
って、真空バルブ自体の真空度が低下することなく、長
期間にわたって高い信頼性か維持され得る真空開閉装置
を提供することに主たる目的を有する。Therefore, with this invention, high reliability can be maintained over a long period of time without reducing the dielectric strength due to changes in the surrounding conditions of the vacuum valve or reducing the degree of vacuum of the vacuum valve itself due to corrosion of the metal brazing parts. The main purpose is to provide a vacuum switchgear that can be used.
本考案の特徴は、筒状の真空容器の両端部近傍を、固定
電極および可動電極の真空容器に対する取付部をも含め
て密封シール的に被覆する第１および第２のシール機構
を具える構成にある。The feature of the present invention is that it includes first and second sealing mechanisms that hermetically cover the vicinity of both ends of a cylindrical vacuum container, including the attachment portions of the fixed electrode and the movable electrode to the vacuum container. It is in.
以下、第１図〜第４図を参照して本考案の実施例を詳細
に説明する。Hereinafter, embodiments of the present invention will be described in detail with reference to FIGS. 1 to 4.
各図は、本考案による真空開閉器の縦断面を示したもの
である。Each figure shows a longitudinal section of a vacuum switch according to the present invention.
第１図の実施例によれば、真空バルブを構成する筒状の
真空容器１の内部に、その容器の両端部１２および１３
から、相対向するようにして挿入された棒状の固定電極
２と可動電極３が位置されており、固定電極２は真空容
器１の端部の壁１２に金属ろう付されて固定され、可動
電極３はベローズ４を介して真空容器１に可動的に設け
られている。According to the embodiment shown in FIG. 1, inside a cylindrical vacuum container 1 constituting a vacuum valve, both ends 12 and 13 of the container are provided.
A rod-shaped fixed electrode 2 and a movable electrode 3 are inserted so as to face each other, and the fixed electrode 2 is fixed to the end wall 12 of the vacuum vessel 1 by metal brazing, and the movable electrode 3 is movably provided in the vacuum container 1 via a bellows 4.
従って、可動電極３の軸方向の移動（図において左右方
向）においても、真空容器１の内部の真空状態の維持が
可能である。Therefore, even when the movable electrode 3 moves in the axial direction (in the left-right direction in the figure), the vacuum state inside the vacuum container 1 can be maintained.
真空容器１の両端には第１および第２のシール機構５お
よび６が設けられており、その先端部５１および６１が
導電性ゴムで形成され、残余の部分が半導電性ゴムある
いは導電性ゴムで形成されている。First and second sealing mechanisms 5 and 6 are provided at both ends of the vacuum container 1, the tips 51 and 61 of which are made of conductive rubber, and the remaining parts are made of semiconductive rubber or conductive rubber. It is formed of.
シール機構５の形状は、底部に筒状の軸貫通部５２を有
した小内径部を有し、その先端部５１は真空容器１の一
端とシール嵌合する大内径部を有している。The shape of the seal mechanism 5 has a small inner diameter part with a cylindrical shaft penetrating part 52 at the bottom, and a large inner diameter part whose tip 51 is sealingly fitted to one end of the vacuum vessel 1.
シール機構５の真空容器１への装着を堅固にするため、
底部の軸貫通部５２の小内径部は、固定電極２の外径に
比して小さい内径を有し、端部５１の近傍の大内径部は
真空容器１の外径に比して小さい内径を有している。In order to firmly attach the sealing mechanism 5 to the vacuum container 1,
The small inner diameter portion of the shaft penetrating portion 52 at the bottom has an inner diameter smaller than the outer diameter of the fixed electrode 2, and the large inner diameter portion near the end portion 51 has an inner diameter smaller than the outer diameter of the vacuum vessel 1. have.
シール機構５はその弾性（伸縮性）を利用し、軸貫通部
５２を固定電極２に、端部５１を真空容器１の一端の筒
壁１１に緊締結合させることによりシール的に固定され
る。The sealing mechanism 5 is fixed in a sealing manner by tightly connecting the shaft penetrating portion 52 to the fixed electrode 2 and the end portion 51 to the cylindrical wall 11 at one end of the vacuum vessel 1 by utilizing its elasticity (stretchability).
７は軸貫通部５２の固定電極２との結合をより確実にす
るための締め付は用リングである。Reference numeral 7 denotes a tightening ring for more securely connecting the shaft penetrating portion 52 to the fixed electrode 2.
このように緊締結合状態にあるシール機構５と真空容器
の壁１２０間の間隙部５３に０、１０１３ ＭＰａ （
１，０３３ｋｇ／ｃｍ２）のＮ２ガスが封入されてシー
ル効果が高められる。0.1013 MPa (
1,033 kg/cm2) of N2 gas is sealed to enhance the sealing effect.
一方、シール機構６もその先端部６１が導電性ゴムで形
成され、残余の部分が半導電性ゴムあるいは導電性ゴム
で形成される。On the other hand, the sealing mechanism 6 also has its tip 61 formed of conductive rubber, and the remaining portion is formed of semiconductive rubber or conductive rubber.
もちろん、画部分はモールドによって一体成型され得る
。Of course, the image portion can be integrally molded.
その形状は、底部に筒状の軸貫通部６３の小内径部を有
し、蛇腹状の伸縮部６２を介して真空容器１の他端と係
合する先端部６１を有した大内径部に続いている。Its shape has a small inner diameter part with a cylindrical shaft penetrating part 63 at the bottom, and a large inner diameter part with a tip part 61 that engages with the other end of the vacuum container 1 via a bellows-like elastic part 62. in the process of.
シール機構６を真空容器１に堅固に装着するため、シー
ル機構５と同様な考慮がなされており、かつ間隙部６４
には上記と同様にＮ２ガスが封入されている。In order to firmly attach the sealing mechanism 6 to the vacuum container 1, the same considerations as the sealing mechanism 5 are taken, and the gap 64 is
N2 gas is sealed in the same way as above.
上記構成において、真空容器１は周囲の雰囲気の影響を
うけやすい部分がシール機構５および６で被覆され、Ｎ
２ガスでシールされているので、バルブ自体の特性が劣
化する心配は全くない。In the above configuration, the parts of the vacuum vessel 1 that are easily affected by the surrounding atmosphere are covered with the seal mechanisms 5 and 6, and the N
Since it is sealed with two gases, there is no worry that the characteristics of the valve itself will deteriorate.
シール機構５および６の素材が伸縮性を有した弾性を具
えているので、湿度変化による封入Ｎ２ガスの膨張、収
縮も充分に吸収されて安定である。Since the materials of the sealing mechanisms 5 and 6 have stretchable elasticity, expansion and contraction of the enclosed N2 gas due to changes in humidity are sufficiently absorbed and stable.
また、可動電極３の移動に際しても、シール機構６の伸
縮部６２がベローズ４と同一方向に変位するため、間隙
部６４で生じる容積変化も少く安定である。Further, when the movable electrode 3 is moved, since the extensible portion 62 of the seal mechanism 6 is displaced in the same direction as the bellows 4, the volume change occurring in the gap portion 64 is small and stable.
また、可動電極３に対応して変位する蛇腹状伸縮部６２
の変位量は平形バッキング等に比べて）〜÷程度であり
、同一機能を平形バッキングでなす場合に比較すると、
すぐれた耐久性が得られる。Further, a bellows-like extensible portion 62 that is displaced in accordance with the movable electrode 3
The amount of displacement is about ) ~ ÷ compared to a flat backing, etc., and compared to when the same function is performed with a flat backing,
Provides excellent durability.
さらに、シール機構５および６の厚さや内径等を適当に
選ぶことによって耐久性をより大きなものにすることも
できる。Furthermore, durability can be increased by appropriately selecting the thickness, inner diameter, etc. of the seal mechanisms 5 and 6.
一方、電気的特性面では、シール機構５および６はその
先端部５１および６１が導電性ゴムで、残余の部分が半
導電性ゴム（又は導電性ゴム）で形成されているため、
電極および真空容器に緊締結合されていることと相俟っ
て、すぐれた結果が得られる。On the other hand, in terms of electrical characteristics, the sealing mechanisms 5 and 6 have their tip portions 51 and 61 made of conductive rubber, and the remaining parts are made of semiconductive rubber (or conductive rubber).
Combined with the tight connection to the electrode and vacuum vessel, excellent results are obtained.
電極が開放されている状態でもシール機構５および６に
印加される電圧による電界の分布は均一になり、電気的
ストレスによって真空容器の筒部に絶縁劣化が生じる心
配も全くない。Even when the electrodes are open, the distribution of the electric field due to the voltage applied to the sealing mechanisms 5 and 6 is uniform, and there is no fear of insulation deterioration in the cylindrical portion of the vacuum container due to electrical stress.
次に、第２図の実施例によれば、真空容器１の筒部に、
絶縁部材からなるリング状物体１４が取り付は固定され
ている。Next, according to the embodiment shown in FIG. 2, in the cylindrical portion of the vacuum container 1,
A ring-shaped object 14 made of an insulating member is fixedly attached.
第２図における引用数字は第１図のものと同一の意味を
もたせであるので重複する説明は省略されている（以下
、第３図、第４図についても同じ）。The reference numerals in FIG. 2 have the same meanings as those in FIG. 1, so redundant explanations are omitted (hereinafter, the same applies to FIGS. 3 and 4).
リング状物体１４の配設によって、シール機構６の先端
部５１とシール機構６の先端部６１間の沿面距離を長く
することができる。By providing the ring-shaped object 14, the creepage distance between the tip 51 of the seal mechanism 6 and the tip 61 of the seal mechanism 6 can be increased.
従って、固定電極２と可動電極３との非接触時（電気回
路が開放の状態）における雷電圧等に基づく衝撃電圧に
よる短絡事故等をも有効に防ぐことができる。Therefore, it is possible to effectively prevent a short circuit accident due to an impact voltage caused by lightning voltage or the like when the fixed electrode 2 and the movable electrode 3 are not in contact with each other (the electric circuit is open).
第２図の実施例では、リング状物体１４を２個配設した
が、本考案はこの実施例に限定されるものではなく、要
は、真空容器１の両端部を除く、筒の胴部の壁面が、軸
方向に波形を有していて沿面距離が大きくなるように構
成されればよい。In the embodiment shown in FIG. 2, two ring-shaped objects 14 are provided, but the present invention is not limited to this embodiment. It is sufficient that the wall surface has a corrugated shape in the axial direction so that the creepage distance becomes large.
従って、第３図の実施例でみられるように、シール機構
５および６の画先端部５１および６１の近傍に、絶縁部
材からなるリング状物体５４および６５をシール機構と
一体モールドによって構成してもよい。Therefore, as seen in the embodiment shown in FIG. 3, ring-shaped objects 54 and 65 made of insulating material are constructed by molding integrally with the sealing mechanism near the image front ends 51 and 61 of the sealing mechanisms 5 and 6. Good too.
次に、第４図の実施例によれば、固定電極２側のシール
機構５′に特徴を有する。Next, the embodiment shown in FIG. 4 has a feature in the sealing mechanism 5' on the fixed electrode 2 side.
シール機構５′は固定電極２から真空容器１の一端にか
けてエポキシ樹脂をモールド成型することにより構成さ
れている。The sealing mechanism 5' is constructed by molding epoxy resin from the fixed electrode 2 to one end of the vacuum vessel 1.
しかも、固定電極２の露出部のほとんどを被覆している
ため、沿面距離をより長くすることができる。Moreover, since most of the exposed portion of the fixed electrode 2 is covered, the creepage distance can be made longer.
勿論、シール部材５′の表面の波形を削除することもで
きる。Of course, the corrugations on the surface of the sealing member 5' can also be removed.
８は固定電極２と結合する他の導体、８１は碍子、８２
は取付板である。8 is another conductor coupled to the fixed electrode 2, 81 is an insulator, 82
is the mounting plate.
従って、第４図の実施例においても、電極間が開の状態
における衝撃電圧に基づく短絡事故等をも有効に防ぐこ
とができる。Therefore, in the embodiment shown in FIG. 4 as well, it is possible to effectively prevent short-circuit accidents caused by impact voltage when the electrodes are open.
以上、詳しく説明したように、本考案の真空開閉装置に
よれば、真空容器内の真空状態の保持が長期間にわたっ
て可能であり、高い信頼性の真空開閉装置を得ることが
でき、その効果は大なるものがある。As explained in detail above, according to the vacuum switchgear of the present invention, it is possible to maintain the vacuum state in the vacuum container for a long period of time, and a highly reliable vacuum switchgear can be obtained. There is something big.
第１図は、本考案の第１の実施例を示す縦断面図、第２
図は、本考案の第２の実施例を示す縦断面図、第３図は
、本考案の第３の実施例を示す縦断面図、第４図は、本
考案の第４の実施例を示す縦断面図（一部省略）である
。
符号の説明 １・・・・・・真空容器、２・・・・・・
固定電極、３・・・・・・可動電極、４・・・・・・ベ
ローズ、５・・・・・・シール機構、５′・・・・・・
エポキシ樹脂モールド、６・・・・・・シール機構、７
・・・・・・締め付はリング、８・・・・・・導体、１
１・・・・・・筒部、１２．１３・・・・・・壁体、１
４・・・・・・接着突起、５１・・・・・・先端部（大
内径部）、５２・・・・・・軸貫通部（小内径部）、５
３・・・・・・間隙部、５４・・・・・・一体モールド
突起、６１・・・・・・先端部（大内径部）、６２・・
・・・・伸縮部（蛇腹）、６３・・・・・・軸貫通部（
小内径部）、６４・・・・・・間隙部、６５・・・・・
・一体モールド突起、８１・・・・・・碍子、８２・・
・・・・取付板。FIG. 1 is a vertical sectional view showing the first embodiment of the present invention, and the second
The figure is a longitudinal sectional view showing the second embodiment of the invention, FIG. 3 is a longitudinal sectional view showing the third embodiment of the invention, and FIG. 4 is a longitudinal sectional view showing the fourth embodiment of the invention. FIG. Explanation of symbols 1... Vacuum container, 2...
Fixed electrode, 3...Movable electrode, 4...Bellows, 5...Seal mechanism, 5'...
Epoxy resin mold, 6... Seal mechanism, 7
...Tighten with ring, 8...Conductor, 1
1...Cylinder part, 12.13...Wall body, 1
4... Adhesive protrusion, 51... Tip part (large inner diameter part), 52... Shaft penetrating part (small inner diameter part), 5
3...Gap part, 54...Integrated mold projection, 61...Tip part (large inner diameter part), 62...
...Extendable part (bellows), 63...Shaft penetrating part (
small inner diameter part), 64... Gap part, 65...
・Integrated mold protrusion, 81... Insulator, 82...
...Mounting plate.
Claims (7)
ズにより真空を維持される可動電極を他端に有する真空
容器と、前記真空容器の両端を２重にシールする第１お
よび第２の一対のシール機構とより構成され、 前記第１のシール機構は前記固定電極に嵌合シールされ
る小内径部と、前記真空容器の一端に嵌合シールされる
大内径部とを有し、前記第２のシール機構は前記可動電
極に嵌合シールされる小内径部と、前記真空容器の他端
に嵌合シールされる大内径部と、この大小の内径部の間
に位置する伸縮部とを有することを特徴とする真空開閉
装置。(1) A vacuum container having a fixed electrode at one end and a movable electrode that moves in the axial direction and whose vacuum is maintained by a bellows at the other end; 2, the first sealing mechanism has a small inner diameter portion that fits and seals with the fixed electrode, and a large inner diameter portion that fits and seals with one end of the vacuum container. , the second sealing mechanism includes a small inner diameter portion that is fitted and sealed to the movable electrode, a large inner diameter portion that is fitted and sealed to the other end of the vacuum container, and an expandable and retractable sealing mechanism that is located between the large and small inner diameter portions. A vacuum switchgear comprising:
れ、前記大小の内径部はそれぞれ前記真空容器の一端の
外径および固定電極の外径より小さく、前記第２のシー
ル機構は弾性伸縮材料より構成され、前記大小の内径部
はそれぞれ前記真空容器の他端の外径および可動電極の
外径より小さく、前記伸縮部は蛇腹状の構成を有する前
記実用新案登録請求の範囲第１項による真空開閉装置。(2) The first sealing mechanism is made of an elastically stretchable material, the large and small inner diameter portions are each smaller than the outer diameter of one end of the vacuum container and the outer diameter of the fixed electrode, and the second sealing mechanism is made of an elastically stretchable material. Claim 1: The utility model is made of a material, the large and small inner diameter portions are each smaller than the outer diameter of the other end of the vacuum container and the outer diameter of the movable electrode, and the expandable portion has a bellows-like configuration. Vacuum switchgear by.
先端が導電性材料で構成され、他の部分が導電性あるい
は半導電性材料で構成される前記実用新案登録請求の範
囲第２項による真空開閉装置。(3) The first and second sealing mechanisms have large inner diameter portions made of a conductive material, and other parts made of a conductive or semiconductive material. Vacuum switchgear according to section.
および可動電極に対して締め付は用リングを介して緊締
結合される構成の前記実用新案登録請求の範囲第３項に
よる真空開閉装置。(4) The vacuum switchgear according to claim 3, wherein the first and second sealing mechanisms are tightly connected to the fixed electrode and the movable electrode via a tightening ring. .
との間に形成される間隙部にＮ２ガスが封入される構成
の前記実用新案登録請求の範囲第４項による真空開閉装
置。(5) The vacuum switchgear according to claim 4 of the utility model registration, wherein N2 gas is sealed in a gap formed between the second and second sealing mechanisms and the vacuum container.
成型される構成の前記実用新案登録請求の範囲第１項に
よる真空開閉装置。(6) The vacuum switchgear according to claim 1, wherein the first sealing mechanism is molded with epoxy resin.
を期する波形突起が設けられる構成の前記実用新案登録
請求の範囲第１項による真空開閉装置。(7) The vacuum opening/closing device according to claim 1 of the above-mentioned utility model registration, wherein a wave-shaped protrusion is provided on the outer wall of the cylindrical body of the vacuum container to increase the creepage distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3565778U JPS594414Y2 (en) | 1978-03-20 | 1978-03-20 | vacuum switchgear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3565778U JPS594414Y2 (en) | 1978-03-20 | 1978-03-20 | vacuum switchgear |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54137863U JPS54137863U (en) | 1979-09-25 |
| JPS594414Y2 true JPS594414Y2 (en) | 1984-02-08 |
Family
ID=28895345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3565778U Expired JPS594414Y2 (en) | 1978-03-20 | 1978-03-20 | vacuum switchgear |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS594414Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8674254B2 (en) * | 2011-01-31 | 2014-03-18 | Thomas & Betts International, Inc. | Flexible seal for high voltage switch |
| JP6053463B2 (en) * | 2012-11-13 | 2016-12-27 | 三菱電機株式会社 | Vacuum valve |
-
1978
- 1978-03-20 JP JP3565778U patent/JPS594414Y2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54137863U (en) | 1979-09-25 |
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