JP3237433B2 - Gas circuit breaker - Google Patents
Gas circuit breakerInfo
- Publication number
- JP3237433B2 JP3237433B2 JP01126695A JP1126695A JP3237433B2 JP 3237433 B2 JP3237433 B2 JP 3237433B2 JP 01126695 A JP01126695 A JP 01126695A JP 1126695 A JP1126695 A JP 1126695A JP 3237433 B2 JP3237433 B2 JP 3237433B2
- Authority
- JP
- Japan
- Prior art keywords
- circuit breaker
- gas circuit
- inter
- electrode
- capacitor
- 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 - Fee Related
Links
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明はガス遮断器に係り、特に
遮断部極間に、電流遮断直後に発生する再起電圧の上昇
率を抑制する為のコンデンサーを接続している遮断器の
構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas circuit breaker, and more particularly, to a structure of a circuit breaker in which a capacitor is connected between electrodes of a circuit breaker for suppressing a rising rate of a re-motive voltage generated immediately after current interruption. .
【０００２】[0002]
【従来の技術】従来、遮断器に関しては、電気書院刊
「電験講座第１３巻変電所」(１９８１)第１０２頁〜第
１５８頁等に述べられている。本文献等によると、遮断
点数の低減による遮断器の部品点数の低減，小形化が求
められていることがわかる。2. Description of the Related Art Conventionally, circuit breakers are described in Denki Shoin, Vol. 13, Substation, Vol. 13, No. 13 (1981), pp. 102-158. According to this document and the like, it is understood that a reduction in the number of parts and a reduction in the size of the circuit breaker by a reduction in the number of break points are required.
【０００３】[0003]
【発明が解決しようとする課題】前記文献等によると、
遮断器を小形化する為には遮断点数を低減すれば良い
が、その為には１遮断点当りの遮断容量を増やさなけれ
ばならず、遮断部の構造や消弧媒体に色々な工夫が加え
られてきていることがわかる。According to the above documents,
In order to reduce the size of the circuit breaker, it is necessary to reduce the number of breaking points. To do so, however, the breaking capacity per breaking point must be increased, and various modifications are made to the structure of the breaking part and the arc-extinguishing medium. You can see that it is getting better.
【０００４】本発明の目的は、１点当りの遮断容量の大
きな遮断器を簡単な構造で実現出来ると共に、組立作業
のし易い大容量ガス遮断器を提供することにある。An object of the present invention is to provide a large-capacity gas circuit breaker which can realize a circuit breaker having a large breaking capacity per point with a simple structure and is easy to assemble.
【０００５】[0005]
【課題を解決するための手段】前記目的は、絶縁ガスが
充填されている金属容器内に、固定及び可動電極を有す
る遮断部と，該遮断部の電極間に電気的に並列接続さ
れ、前記可動電極の接離動作方向に延在するコンデンサ
ーとを配置してなるガス遮断器において、前記遮断部の
固定及び可動電極間を極間絶縁支持物で支持し、かつ、
前記コンデンサーを、前記極間絶縁支持物の誘電率より
誘電率の小さい絶縁筒内に収納すると共に、該絶縁筒を
前記極間絶縁支持物内に配置したことを特徴とするガス
遮断器により達成される。The object of the present invention is to provide a metal container filled with an insulating gas, a cut-off portion having fixed and movable electrodes, and an electric parallel connection between the electrodes of the cut-off portion, In a gas circuit breaker in which a capacitor extending in the contact / separation operation direction of the movable electrode is disposed, the fixed portion of the blocking portion and the movable electrode are supported by an inter-electrode insulating support, and
The capacitor is housed in an insulating cylinder having a dielectric constant smaller than the dielectric constant of the inter-electrode insulating support, and the insulating cylinder is disposed in the inter-electrode insulating support. Is done.
【０００６】[0006]
【作用】前記課題を解決する為の手段は次の如く作用す
る。The means for solving the above problems operates as follows.
【０００７】ガス遮断器の遮断部電極間を絶縁物で支持
接続することにより、遮断部単独で電極の組立作業が出
来、又、遮断部をまとまった１つの部品として取り扱う
ことが出来る為、この遮断部を他の絶縁物で操作箱に接
続することにより、遮断／投入動作の調整が容易に行え
る。[0007] By connecting and supporting the electrodes of the gas circuit breaker with an insulating material, it is possible to assemble the electrodes with the interrupter alone and to handle the interrupter as a single unit. By connecting the interrupting section to the operation box with another insulator, adjustment of the interrupting / closing operation can be easily performed.
【０００８】万一、遮断器が電流を遮断した直後に遮断
部電極間に発生する再起電圧の上昇率が大きいと、遮断
部電極間の絶縁回復が追いつかず、電流を遮断しにくく
なる。この再起電圧の上昇率を低減することにより遮断
可能な電流を大きくすることが出来る。この目的で遮断
部極間にコンデンサーを接続している。しかし、このコ
ンデンサーを収納した絶縁筒内壁とコンデンサー外周面
の間には微少空隙が生じる。この微少空隙と，コンデン
サーを遮断部に接続する為の電極、及びコンデンサーを
収納する絶縁筒との三者が接する微少部分はトリプルジ
ャンクションと呼ばれ、この空隙部分の電界は絶縁筒の
誘電率の影響で局部的に集中し、高電界が発生する。一
般に、トリプルジャンクションの空隙部分に発生する高
電界の大きさは、相接する絶縁物の誘電率の大きさに比
例する傾向にある。極間絶縁支持物には遮断部電極の荷
重や遮断部動作時の衝撃荷重などが直接加わる為、これ
らの荷重に耐える強度が必要である。絶縁物は機械的強
度が強いとその誘電率は大きい傾向にあり、極間コンデ
ンサーを直接誘電率の大きな極間絶縁支持物の中に収納
するのではなく、一旦誘電率の小さな絶縁筒に収納して
からそれらを極間絶縁支持物に収納することにより前記
微少空隙の電界集中を緩和することが出来る。If the rising rate of the re-motive voltage generated between the electrodes of the breaking unit immediately after the breaker cuts off the current is large, the insulation recovery between the electrodes of the breaking unit cannot catch up, and it becomes difficult to cut off the current. The current that can be cut off can be increased by reducing the rate of increase of the re-motive voltage. For this purpose, a capacitor is connected between the poles of the breaking section. However, a minute gap is formed between the inner wall of the insulating cylinder containing the capacitor and the outer peripheral surface of the capacitor. The minute part where the minute gap, the electrode for connecting the capacitor to the cutoff part, and the insulating cylinder that houses the capacitor is in contact is called the triple junction, and the electric field in this gap is the dielectric constant of the insulating cylinder. Due to the influence, local concentration occurs, and a high electric field is generated. In general, the magnitude of a high electric field generated in a gap portion of a triple junction tends to be proportional to the magnitude of the dielectric constant of an adjacent insulator. The inter-electrode insulating support is directly subjected to the load of the cut-off electrode and the impact load during the operation of the cut-off portion, so that it must be strong enough to withstand these loads. Insulators tend to have a large dielectric constant when the mechanical strength is strong, so the inter-electrode capacitor is not housed directly in the inter-electrode insulating support with a large permittivity, but is once housed in an insulating cylinder with a small permittivity. Then, by storing them in the inter-electrode insulating support, the electric field concentration in the minute gaps can be reduced.
【０００９】[0009]
【実施例】以下、本発明の一実施例を図１〜図５を用い
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.
【００１０】遮断部極間電極１，２は導体４，５にそれ
ぞれ取り付けられ電気的に接続されており、導体４，５
は極間支持絶縁物３により固定接続されている。極間絶
縁支持物３の側面には極間コンデンサー７が収納されて
いる。以上の様な遮断部部品は絶縁支持物１７により操
作箱１８に接続されており、これらの部品は接地された
金属容器１９内に絶縁ガスと共に収納されている。遮断
部極間電極１，２は操作箱１８より図示されない絶縁操
作棒を介して力を伝達され、遮断と投入動作を行う。The inter-electrodes 1 and 2 of the cut-off portion are attached to and electrically connected to the conductors 4 and 5, respectively.
Are fixedly connected by a gap supporting insulator 3. A gap capacitor 7 is housed on the side surface of the gap insulating support 3. The above-mentioned blocking parts are connected to an operation box 18 by an insulating support 17, and these parts are housed in a grounded metal container 19 together with an insulating gas. Power is transmitted from the operation box 18 to the inter-electrodes 1 and 2 of the cut-off section via an insulated operation rod (not shown) to perform cut-off and closing operations.
【００１１】以上の様な構成を持つガス遮断器において
図１は遮断部極間電極１，２の動作軸線がほぼ水平にな
る様配置された遮断部の平面図を示し、図２は図１のＡ
−Ａより見た断面図を示している。本図において、導体
４，５，遮断部極間電極１，２は極間絶縁支持物３によ
り一体に結びついている為、これら遮断部の部品を１つ
のユニット部品として取り扱うことが出来る。又、極間
絶縁支持物３を円筒形にして内部に遮断部極間電極１，
２を収納している為、極間絶縁支持物３の十分な機械的
強度を保ったまま遮断部全体を小さくすることが出来
る。更に、極間絶縁支持物３の上下方向に開口部６を設
けることにより、ここから遮断部極間電極１，２の保
守，点検及び交換が容易に行え、更に、電流遮断時アー
ク熱により発生する遮断部極間電極１，２や絶縁ガスの
分解生成物が極間絶縁支持物３の内面に堆積するのを防
止出来る。この分解生成物は粉末状の絶縁物であるが、
吸湿性が高く、点検などの為遮断部が外気にふれる時な
どに外気中の水分を吸収し付着した絶縁物沿面の絶縁低
下を招く恐れがあるが、これを防止することが出来る。
極間絶縁支持物３の上下方向に開口部を設ける為、極間
コンデンサー７は極間絶縁支持物３の側面内に配置され
ている。In the gas circuit breaker having the above-mentioned structure, FIG. 1 is a plan view of a cut-off portion arranged such that the operating axes of the cut-off-electrodes 1 and 2 are substantially horizontal, and FIG. A
FIG. 4 shows a cross-sectional view as viewed from −A. In this figure, since the conductors 4, 5 and the inter-electrodes 1 and 2 of the interrupting portion are integrally connected by the inter-electrode insulating support 3, the components of the interrupting portion can be handled as one unit component. Further, the inter-electrode insulating support 3 is formed in a cylindrical shape, and the inter-electrode 1,
2 is accommodated, so that the entire cutoff portion can be reduced while maintaining the mechanical strength of the inter-electrode insulating support 3 sufficiently. Further, by providing openings 6 in the vertical direction of the inter-electrode insulating support 3, maintenance, inspection and replacement of the inter-electrodes 1 and 2 of the intercepting portion can be easily performed from here. It is possible to prevent decomposition products of the inter-electrodes 1 and 2 and the decomposition products of the insulating gas from being deposited on the inner surface of the inter-electrode insulating support 3. This decomposition product is a powdery insulator,
It has high hygroscopicity, and when the shut-off part is exposed to the outside air for inspection or the like, it may absorb moisture in the outside air and cause a decrease in insulation on the surface of the attached insulator, but this can be prevented.
In order to provide an opening in the vertical direction of the inter-electrode insulating support 3, the inter-electrode capacitor 7 is arranged in the side surface of the inter-electrode insulating support 3.
【００１２】図３は極間コンデンサー７を収納した状態
を示す断面図である。極間絶縁支持物３に開けられた円
筒形の穴内には同軸円筒形の絶縁筒１０に収納された極
間コンデンサー７，コンデンサー用電極８ａ，８ｂ，８
ｃが配置されている。極間コンデンサー７はコンデンサ
ー用電極８ａ，８ｂ，８ｃを介し導電性のバネ９により
導体４，５に押し付けられ、電気的に接続されている。
本図において極間絶縁支持物３に開けられた円筒形の穴
の両端面径φＤ3，φＤ4を異なる径とし、円筒形に勾配
をつけることにより、極間絶縁支持物３をモールド成形
により製造する場合、抜き型によりこの穴を一体成形す
ることが出来るので、製作上大変に有利である。同様の
理由により絶縁筒１０の穴の両端面の径φＤ5，φＤ6も
異なる径として円筒形に勾配をつけることにより一体成
形が可能となる。又、極間絶縁支持物３の外表面よりコ
ンデンサー収納穴に向かって貫通穴１１を開けることに
よりコンデンサー収納穴内に絶縁ガスを入れることが出
来る。一般に、極間絶縁支持物３はエポキシ樹脂又はＦ
ＲＰなどで製作されその比誘電率は４〜６と高い。そこ
で極間コンデンサー７を一旦絶縁筒１０に収納する。こ
の絶縁筒１０には大きな機械的強度が要求されない為、
四フッ化エチレンの様な低誘電率の材料を使用出来る。
そうすることにより極間コンデンサー７と絶縁筒１０の
間の微少空隙２４のコンデンサー用電極８ａ，８ｂ近傍
での局部的電界集中を緩和出来る。又、絶縁筒１０を絶
縁物の薄板を極間コンデンサー７の外周に巻き付けて構
成しても同様の効果が得られる。FIG. 3 is a sectional view showing a state where the inter-electrode capacitor 7 is housed. In a cylindrical hole formed in the inter-electrode insulating support 3, an inter-electrode capacitor 7 and capacitor electrodes 8 a, 8 b, and 8 housed in a coaxial cylindrical insulating tube 10.
c is arranged. The interelectrode capacitor 7 is pressed against the conductors 4 and 5 by the conductive spring 9 via the capacitor electrodes 8a, 8b and 8c, and is electrically connected.
In this figure, the diameters of both end faces φD 3 and φD 4 of the cylindrical holes formed in the inter-electrode insulating support 3 are made different diameters, and the inter-electrode insulating support 3 is formed by molding by giving a gradient to the cylindrical shape. In the case of manufacturing, since this hole can be integrally formed by a punching die, it is very advantageous in manufacturing. For the same reason, the diameters φD 5 and φD 6 of the both end surfaces of the hole of the insulating tube 10 may be different from each other, and the cylindrical shape may be formed so as to be integrally formed. Further, by forming a through hole 11 from the outer surface of the inter-electrode insulating support 3 toward the capacitor housing hole, an insulating gas can be introduced into the capacitor housing hole. Generally, the inter-electrode insulating support 3 is made of epoxy resin or F
It is made of RP or the like and has a high relative dielectric constant of 4 to 6. Therefore, the interelectrode capacitor 7 is temporarily stored in the insulating tube 10. Since large mechanical strength is not required for the insulating tube 10,
A low dielectric constant material such as ethylene tetrafluoride can be used.
By doing so, local electric field concentration near the capacitor electrodes 8a and 8b in the minute gap 24 between the interelectrode capacitor 7 and the insulating cylinder 10 can be reduced. The same effect can be obtained even if the insulating tube 10 is formed by winding a thin plate of an insulating material around the outer periphery of the interelectrode capacitor 7.
【００１３】あるいは極間コンデンサー７，コンデンサ
ー用電極８ａ，８ｂ，８ｃ，バネ９及びこれらを収納す
る絶縁筒１０を極間絶縁支持物３の外部側面に配置し、
導体４，５にコンデンサー用電極８ａ，８ｃをそれぞれ
接続しても同様の効果が得られる。その原理を図４を用
いて説明する。Alternatively, the inter-electrode capacitor 7, the capacitor electrodes 8a, 8b, 8c, the spring 9, and the insulating tube 10 for accommodating them are arranged on the outer side surface of the inter-electrode insulating support 3,
Similar effects can be obtained by connecting the capacitor electrodes 8a and 8c to the conductors 4 and 5, respectively. The principle will be described with reference to FIG.
【００１４】前記微少空隙２４と，コンデンサー用電極
８ａ又は８ｂと，絶縁筒１０との三者が接する部分はト
リプルジャンクションと呼ばれる。これを模式的に表わ
したのが図４である。電極１４と誘電体１２の間に微少
空隙１３を有しており、該空隙１３と，該誘電体１２の
誘電率はそれぞれε1，ε2、又、厚さはＬ1，Ｌ2であ
り、電極１４と誘電体１２の間に電位差Ｖが与えられて
いる。空隙１３内の電界強度をＥ1 ，誘電体１２内の電
界強度をＥ2 すると、 Ｅ1＝ε2Ｖ／(Ｌ2ε1＋Ｌ1ε2） Ｅ2＝ε1Ｖ／(Ｌ2ε1＋Ｌ1ε2） となり、空隙１３内の電界強度Ｅ1 は誘電体１２の誘電
率の大きさに比例していることがわかる。従って誘電体
１２の誘電率を小さくすることにより空隙１３内の電界
集中を緩和出来るのである。そこで、誘電体１２として
誘電率の低い絶縁筒１０を使うことに効果がある。又、
極間コンデンサー７の各素子は極間に印加される電位を
平等に分担する為、遮断部極間電極１，２とコンデンサ
ー７の軸方向（図１のＢ方向）における中心点をほぼ一
致させることにより、遮断部極間電極１又は２のいずれ
か一方に極度に電界が集中することを防止出来るので絶
縁性能上大変有利である。The portion where the minute gap 24, the capacitor electrode 8a or 8b, and the insulating tube 10 contact each other is called a triple junction. This is schematically shown in FIG. A minute gap 13 is provided between the electrode 14 and the dielectric 12. The dielectric constant of the gap 13 and the dielectric 12 is ε 1 , ε 2 , respectively, and the thickness is L 1 , L 2 . , A potential difference V is applied between the electrode 14 and the dielectric 12. Assuming that the electric field strength in the gap 13 is E 1 and the electric field strength in the dielectric 12 is E 2 , E 1 = ε 2 V / (L 2 ε 1 + L 1 ε 2 ) E 2 = ε 1 V / (L 2 ε 1 + L 1 ε 2 ), indicating that the electric field strength E 1 in the gap 13 is proportional to the magnitude of the dielectric constant of the dielectric 12. Therefore, the electric field concentration in the gap 13 can be reduced by reducing the dielectric constant of the dielectric 12. Therefore, it is effective to use the insulating cylinder 10 having a low dielectric constant as the dielectric 12. or,
Since the elements of the inter-electrode capacitor 7 equally share the potential applied between the electrodes, the center points in the axial direction (the direction B in FIG. 1) of the inter-electrode electrodes 1 and 2 of the intercepting portion and the capacitor 7 are almost coincident. As a result, it is possible to prevent the electric field from being extremely concentrated on one of the inter-electrodes 1 and 2 of the cut-off portion, which is very advantageous in terms of insulation performance.
【００１５】実際の遮断器において、上述した電界集中
の緩和効果を十分発揮するためには、絶縁筒１０の厚さ
を一定値以上にする必要がある。図６は、コンデンサー
７の電界集中部の電界と絶縁筒１０の厚さとの関係であ
る。図６において、電界値は、絶縁筒１０の厚さが十分
厚い場合の電界値に対する相対値で示している。絶縁筒
１０の厚さが０.１mm 以上の場合には、電界集中は十分
緩和されている。従って、絶縁筒１０の厚さを０.１mm
以上とすることにより、電界集中を緩和し、絶縁耐力を
高くすることが出来る。絶縁筒１０の厚さは、厚ければ
厚いほど電界集中が緩和されるが、１０mm以上では０.
１％ 未満しか緩和されない。また、絶縁筒１０の厚さ
を１０mm以上にすると極間絶縁支持物３にコンデンサー
を収納するために開ける穴の径が大きくなり過ぎ、極間
絶縁支持物３の機械的強度が低下するので、絶縁筒１０
の厚さを１０mm以下とすべきである。In an actual circuit breaker, the thickness of the insulating cylinder 10 must be equal to or greater than a certain value in order to sufficiently exhibit the above-described effect of reducing the electric field concentration. FIG. 6 shows the relationship between the electric field at the electric field concentration portion of the capacitor 7 and the thickness of the insulating tube 10. In FIG. 6, the electric field value is shown as a relative value to the electric field value when the thickness of the insulating cylinder 10 is sufficiently large. When the thickness of the insulating tube 10 is 0.1 mm or more, the electric field concentration is sufficiently reduced. Therefore, the thickness of the insulating cylinder 10 is set to 0.1 mm.
With the above, the electric field concentration can be reduced and the dielectric strength can be increased. As for the thickness of the insulating cylinder 10, the thicker the insulating cylinder 10 is, the more the electric field concentration is eased.
Less than 1% is mitigated. Further, if the thickness of the insulating cylinder 10 is 10 mm or more, the diameter of the hole to be formed for accommodating the capacitor in the inter-electrode insulating support 3 becomes too large, and the mechanical strength of the inter-electrode insulating support 3 is reduced. Insulation tube 10
Should be no more than 10 mm thick.
【００１６】図５はガス遮断器断面図である。極間絶縁
支持物３で接続された遮断部ユニットは絶縁支持物１７
により操作箱１８に接続されている。又、遮断部導体
４，５にはそれぞれ集電子１５ａ，１５ｂが取り付けら
れておりこれらに一部図示を省略された分岐導体１６
ａ，１６ｂが接続される。絶縁支持物１７により遮断部
ユニットを操作箱１８に接続することにより、これらを
金属容器１９に収納する前に遮断部極間電極１，２の遮
断／投入動作の調整が可能となり作業効率が大幅に向上
する。又、集電子１５ａ，１５ｂを含む遮断部部品を内
接する仮想円筒２０の径φＤ2を金属容器１９の前記遮
断部を収納する側の端面の径φＤ1より小さくし、か
つ、仮想円筒２０が金属容器１９の円筒部分に接せず内
包される様にすることで集電子１５ａ，１５ｂを含む遮
断部ユニットを操作箱１８に接続したまま図中矢印Ｂの
方向にまっすぐ挿入することが出来、組立効率が大幅に
向上する。又、極間絶縁支持物３の開口部の方向に金属
容器１９表面にハンドホール２１を設けることにより金
属容器１９の外部から容易に遮断部の調整，保守，点検
が行える。FIG. 5 is a sectional view of the gas circuit breaker. The breaking unit connected by the inter-electrode insulating support 3 is an insulating support 17.
Is connected to the operation box 18. Current collectors 15a and 15b are attached to the cut-off conductors 4 and 5, respectively.
a and 16b are connected. By connecting the cut-off unit to the operation box 18 by the insulating support 17, it is possible to adjust the cut-off / make-up operation of the cut-off electrodes 1 and 2 before storing them in the metal container 19, thereby greatly improving the work efficiency. To improve. Further, the diameter φD 2 of the virtual cylinder 20 that inscribes the blocking part components including the current collectors 15 a and 15 b is smaller than the diameter φD 1 of the end face of the metal container 19 on the side where the blocking part is stored, and the virtual cylinder 20 is By being enclosed without contacting the cylindrical portion of the metal container 19, the cut-off unit including the current collectors 15a and 15b can be inserted straight in the direction of arrow B in the drawing while being connected to the operation box 18, The assembly efficiency is greatly improved. In addition, by providing the handhole 21 on the surface of the metal container 19 in the direction of the opening of the inter-electrode insulating support 3, adjustment, maintenance, and inspection of the blocking portion can be easily performed from outside the metal container 19.
【００１７】[0017]
【発明の効果】本発明により、絶縁性能が高く、１点当
りの遮断容量の大きな遮断器を簡単な構造で実現出来る
と共に、組立作業性を向上したガス遮断器が得られた。According to the present invention, a gas circuit breaker having a high insulation performance and a large breaking capacity per point can be realized with a simple structure, and the assembling workability is improved.
【図１】本発明の具体的実施例を示す遮断部の平面図で
ある。FIG. 1 is a plan view of a blocking unit showing a specific embodiment of the present invention.
【図２】図１のＡ−Ａで切りとったときの断面図であ
る。FIG. 2 is a sectional view taken along the line AA in FIG.
【図３】極間コンデンサーの拡大した断面図である。FIG. 3 is an enlarged sectional view of a capacitor between poles.
【図４】トリプルジャンクションを模式的に示した図で
ある。FIG. 4 is a diagram schematically showing a triple junction.
【図５】本発明の具体的実施例を示すガス遮断器の断面
図である。FIG. 5 is a sectional view of a gas circuit breaker showing a specific embodiment of the present invention.
【図６】コンデンサーを収納する絶縁筒の厚さとコンデ
ンサーの電界集中部の電界の関係である。FIG. 6 is a graph showing the relationship between the thickness of an insulating cylinder accommodating a capacitor and the electric field at the electric field concentration portion of the capacitor.
１，２…遮断部極間電極、３…極間絶縁支持物、４，５
…導体、６…開口部、７…極間コンデンサー、８ａ，８
ｂ，８ｃ…コンデンサー用電極、９…バネ、１０…絶縁
筒、１１…貫通穴、１２…誘電体、１３…微少空隙、１
４…電極、１５ａ，１５ｂ…集電子、１６ａ，１６ｂ…
分岐導体、１７…絶縁支持物、１８…操作箱、１９…金
属容器、２０…仮想円筒、２１…ハンドホール，２２
ａ，２２ｂ…カバー、２３ａ，２３ｂ…分岐容器、２４
…空隙、２５…遮断器ノズル。1, 2,... Inter-electrode between cut-off portions, 3: inter-electrode insulating support, 4, 5
... conductor, 6 ... opening, 7 ... interelectrode capacitor, 8a, 8
b, 8c: capacitor electrode, 9: spring, 10: insulating cylinder, 11: through hole, 12: dielectric, 13: minute gap, 1
4 ... electrode, 15a, 15b ... current collector, 16a, 16b ...
Branch conductor, 17: insulating support, 18: operation box, 19: metal container, 20: virtual cylinder, 21: hand hole, 22
a, 22b ... cover, 23a, 23b ... branch container, 24
... air gap, 25 ... breaker nozzle.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山根 雄一郎 茨城県日立市国分町一丁目１番１号 株 式会社 日立製作所 国分工場内 (72)発明者 内海 知明 茨城県日立市大みか町七丁目１番１号 株式会社 日立製作所 日立研究所内 (56)参考文献 特開 平５−282969（ＪＰ，Ａ) 特開 平２−242544（ＪＰ，Ａ) 実開 平３−121638（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) H01H 33/16 H01H 33/53 ──────────────────────────────────────────────────続 き Continuing from the front page (72) Inventor Yuichiro Yamane 1-1-1, Kokubuncho, Hitachi City, Ibaraki Prefecture Inside the Kokubu Plant of Hitachi, Ltd. (72) Inventor Tomoaki Utsumi 7-1 Omikacho, Hitachi City, Ibaraki Prefecture No. 1 Hitachi, Ltd. Hitachi Research Laboratory (56) References JP-A-5-282969 (JP, A) JP-A-2-242544 (JP, A) JP-A-3-121638 (JP, U) (58 ) Surveyed field (Int.Cl. 7 , DB name) H01H 33/16 H01H 33/53
Claims (15)
固定及び可動電極を有する遮断部と，該遮断部の電極間
に電気的に並列接続され、前記可動電極の接離動作方向
に延在するコンデンサーとを配置してなるガス遮断器に
おいて、 前記遮断部の固定及び可動電極間を極間絶縁支持物で支
持し、該極間絶縁支持物内に絶縁筒を配置しており、該
絶縁筒は該極間絶縁支持物の誘電率より誘電率の小さい
材料からなっており、該コンデンサーは該絶縁筒内に収
納したことを特徴とするガス遮断器。In a metal container filled with an insulating gas,
A gas circuit breaker comprising: a cut-off portion having fixed and movable electrodes; and a capacitor electrically connected in parallel between the electrodes of the cut-off portion and extending in a moving direction of the movable electrode. The fixed and movable electrodes of the portion are supported by an inter-electrode insulating support, and an insulating tube is disposed in the inter-electrode insulating support. The insulating tube has a dielectric constant higher than that of the inter-electrode insulating support. A gas circuit breaker made of a small material, wherein the capacitor is housed in the insulating cylinder.
内に相対する遮断部電極を収納したことを特徴とする請
求項１記載のガス遮断器。2. The gas circuit breaker according to claim 1, wherein said inter-electrode insulating support has a substantially cylindrical shape, and the opposing cut-off portion electrodes are accommodated in the cylindrical shape.
断電極を配置し、かつ、該コンデンサーを該極間絶縁支
持物内の横側面に配置すると共に、前記極間絶縁支持物
の上下方向に開口部を設けたことを特徴とする請求項２
記載のガス遮断器。3. The interposition electrode is disposed so that the interception / closing operation axis is substantially horizontal, and the capacitor is disposed on a lateral side surface in the inter-electrode insulating support. 3. An opening provided in a vertical direction.
The described gas circuit breaker.
する為に開けた穴に貫通する様に、該極間絶縁支持物側
面に穴を設けたことを特徴とする請求項１記載のガス遮
断器。4. The inter-electrode insulating support according to claim 1, wherein a hole is provided in a side surface of the inter-electrode insulating support so as to penetrate a hole opened for housing a capacitor in the inter-electrode insulating support. Gas circuit breaker.
する為に開けた穴の形状を略円筒形とし、円筒両端の口
径が異なることを特徴とする請求項２記載のガス遮断
器。5. The gas circuit breaker according to claim 2, wherein the hole formed to accommodate the condenser in the inter-electrode insulating support has a substantially cylindrical shape, and the diameters of both ends of the cylinder are different.
略同軸円筒形とし、内径両端の口径が異なることを特徴
とする請求項５記載のガス遮断器。6. The gas circuit breaker according to claim 5, wherein the shape of the insulating tube accommodating the condenser is substantially a coaxial cylindrical shape, and the diameters at both ends are different.
の薄板を該コンデンサー外周に巻き付けることで構成し
たことを特徴とする請求項１記載のガス遮断器。7. The gas circuit breaker according to claim 1, wherein the insulating cylinder containing the capacitor is formed by winding a thin plate of an insulating material around the outer periphery of the capacitor.
極間絶縁支持物外の横側面に配置したことを特徴とする
請求項３記載のガス遮断器。8. The gas circuit breaker according to claim 3, wherein the condenser and the insulating cylinder accommodating the condenser are arranged on the lateral side outside the inter-electrode insulating support.
ーの極間軸方向の中心がほぼ一致させるように遮断部電
極とコンデンサーとを配置したことを特徴とする請求項
１記載のガス遮断器。9. The gas shut-off according to claim 1, wherein the cut-off electrode and the capacitor are arranged so that the axial center between the cut-off electrodes and the axial center of the capacitor substantially coincide with each other. vessel.
作させる為の操作機構を収納した操作箱に絶縁物により
支持接続したことを特徴とする請求項１記載のガス遮断
器。10. The gas circuit breaker according to claim 1, wherein one end of the electrode of the breaking unit is supported and connected by an insulator to an operation box containing an operating mechanism for operating the breaking unit.
対向した金属容器の表面にハンドホールを設けたことを
特徴とする請求項３記載のガス遮断器。11. The gas circuit breaker according to claim 3, wherein a handhole is provided on a surface of the metal container facing an opening provided in the inter-electrode insulating support.
該遮断部，集電子及び絶縁ガスを収納し接地された略円
筒形金属容器端面開口部の径を、該遮断部及び集電子を
収納した状態でこれらを内接する仮想円筒の径より大き
くしたことを特徴とする請求項１０記載のガス遮断器。12. A current collector is attached to both ends of said blocking portion electrode,
The diameter of the opening of the end surface of the substantially cylindrical metal container containing the cut-off portion, the current collector and the insulating gas, and grounded is larger than the diameter of the virtual cylinder inscribing the cut-off portion and the current collector in the housed state. The gas circuit breaker according to claim 10, wherein:
は、請求項４のガス遮断器において、前記コンデンサー
を収納した絶縁筒の厚さを０.１mm 以上としたことを特
徴とするガス遮断器。13. The gas circuit breaker according to claim 1, 2, 3, or 4, wherein the thickness of the insulating cylinder accommodating the condenser is 0.1 mm or more. Gas circuit breaker.
コンデンサーを収納した絶縁筒の厚さを０.１mm 以上か
つ１０mm以下としたことを特徴とするガス遮断器。14. The gas circuit breaker according to claim 13, wherein the thickness of the insulating cylinder accommodating the condenser is not less than 0.1 mm and not more than 10 mm.
１３、または、請求項１４のガス遮断器において、前記
コンデンサーを収納した絶縁筒をフッ素樹脂で構成した
ことを特徴とするガス遮断器。15. The gas circuit breaker according to claim 1, wherein the insulating cylinder accommodating the condenser is made of a fluororesin. Gas circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP01126695A JP3237433B2 (en) | 1994-03-18 | 1995-01-27 | Gas circuit breaker |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4826094 | 1994-03-18 | ||
| JP6-48260 | 1994-03-18 | ||
| JP01126695A JP3237433B2 (en) | 1994-03-18 | 1995-01-27 | Gas circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07307127A JPH07307127A (en) | 1995-11-21 |
| JP3237433B2 true JP3237433B2 (en) | 2001-12-10 |
Family
ID=26346683
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP01126695A Expired - Fee Related JP3237433B2 (en) | 1994-03-18 | 1995-01-27 | Gas circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3237433B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6156535B1 (en) | 2016-03-17 | 2017-07-05 | 株式会社明電舎 | Voltage divider capacitor |
-
1995
- 1995-01-27 JP JP01126695A patent/JP3237433B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07307127A (en) | 1995-11-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3860553B2 (en) | Gas insulated switchgear | |
| JP3237433B2 (en) | Gas circuit breaker | |
| KR100349211B1 (en) | Gas circuit breaker | |
| JP3031174B2 (en) | Gas circuit breaker | |
| US4797522A (en) | Vacuum-type circuit interrupter | |
| JPS5912511A (en) | Gas bushing | |
| JP2772094B2 (en) | Barrier in insulating gas | |
| JPS6210916Y2 (en) | ||
| JP2642469B2 (en) | Electrical equipment insulation structure | |
| JPH11126544A (en) | Gas-blast circuit-breaker for electric power | |
| JP4283962B2 (en) | Switchgear | |
| JP2612291B2 (en) | Ground switch for gas insulated switchgear | |
| JPH1075519A (en) | Gas insulated apparatus | |
| JP3270130B2 (en) | Vacuum circuit breaker | |
| JPS6347216B2 (en) | ||
| JPH05282969A (en) | Gas circuit breaker | |
| JPS6312518Y2 (en) | ||
| KR830002148B1 (en) | Gas Insulated Switchgear | |
| JPS5910884Y2 (en) | Gas insulated switchgear with cylindrical insulating spacer | |
| JPS6254220B2 (en) | ||
| JPH0447878Y2 (en) | ||
| JPH11122733A (en) | Gas disconnecting device | |
| JPS6254221B2 (en) | ||
| JPH0246113A (en) | Gas insulated disconnecting switch | |
| JPH11252721A (en) | Gas insulated disconnector |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20071005 Year of fee payment: 6 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081005 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091005 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091005 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101005 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111005 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121005 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121005 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20131005 Year of fee payment: 12 |
|
| LAPS | Cancellation because of no payment of annual fees |