JPH01248423A - Buffer type gas-blasted circuit breaker - Google Patents
Buffer type gas-blasted circuit breakerInfo
- Publication number
- JPH01248423A JPH01248423A JP7440988A JP7440988A JPH01248423A JP H01248423 A JPH01248423 A JP H01248423A JP 7440988 A JP7440988 A JP 7440988A JP 7440988 A JP7440988 A JP 7440988A JP H01248423 A JPH01248423 A JP H01248423A
- Authority
- JP
- Japan
- Prior art keywords
- movable
- movable electrode
- arc
- electrode
- operating rod
- 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.)
- Granted
Links
- 239000004020 conductor Substances 0.000 claims abstract description 22
- 238000007664 blowing Methods 0.000 claims description 2
- 230000005684 electric field Effects 0.000 abstract description 7
- 238000010276 construction Methods 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 14
- 229910052742 iron Inorganic materials 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Circuit Breakers (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は電力系統の変電所あるいは開閉所に用いられる
バッファ形ガス遮断器に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a buffer type gas circuit breaker used in a power system substation or switchyard.
（従来の技術）
送電系統の大容量化に伴ない、変電所や開閉所に用いら
れる遮断器は、遮断容量の増大と高い信頼性とが要求さ
れている。遮断器の信頼性を高めるためには、部品数を
少なくして構造を簡素化することが重要である。そのた
め、遮断器の遮断点数の減少が計られている。したがっ
て、遮断器の１点当りの遮断容量を増加させることが必
要である。(Prior Art) As the capacity of power transmission systems increases, circuit breakers used in substations and switchyards are required to have increased breaking capacity and high reliability. In order to increase the reliability of circuit breakers, it is important to reduce the number of parts and simplify the structure. Therefore, efforts are being made to reduce the number of breaking points of circuit breakers. Therefore, it is necessary to increase the breaking capacity per point of the circuit breaker.
従来の一般的なバッファ形ガス遮断器において、遮断性
能を高めるためには、バッファ室のガス圧力を高めるこ
とが必要でおる。例えば現在５５０ＫＶ系統では、遮断
電流が６３ＫＡのものまで実用化している。この５５０
ＫＶ−６３ＫＡ級の遮断器は、４点切で構成されている
が、遮断器の信頼性を向上させるためには、遮断点数を
少なくし部品点数を少なくすることが重要である。この
ためには、１遮断点当たりの遮断容量を向上させ、５５
０ＫＶ−６３ＫＡを２点切あるいは１点切化することが
必要である。In conventional general buffer type gas circuit breakers, in order to improve the circuit breaking performance, it is necessary to increase the gas pressure in the buffer chamber. For example, in the current 550KV system, one with a breaking current of 63KA has been put into practical use. This 550
The KV-63KA class circuit breaker is configured with four breaking points, but in order to improve the reliability of the circuit breaker, it is important to reduce the number of breaking points and the number of parts. To achieve this, it is necessary to improve the breaking capacity per breaking point,
It is necessary to cut 0KV-63KA at two points or at one point.
この様な遮断容量の向上を達成するために、従来１６８
ＫＶ以上の送電電圧系統に用いられてきたものはアーク
にガスを吹付は消弧するいわゆるバッファ形ガス遮断器
がある。これは、遮断部の構造が簡単なうえに封入され
たＳＦ６ガスによりすぐれた絶縁・消弧性能を有するも
のである。また、変電所の機器全体をＳＦ６ガスで絶縁
する密閉形ガス絶縁開閉所においては、用いる絶縁ガス
が遮断器と他の機器との絶縁協調が可能であり、機器の
配置の点からも効率が良いので、特に良く使用される。In order to achieve this improvement in breaking capacity, conventional 168
There is a so-called buffer type gas circuit breaker which extinguishes the arc by spraying gas onto it, which has been used in power transmission voltage systems of KV or higher. This has a simple structure of the interrupting part and has excellent insulation and arc extinguishing performance due to the SF6 gas enclosed. In addition, in closed gas-insulated switchyards where all substation equipment is insulated with SF6 gas, the insulating gas used allows for coordination of insulation between circuit breakers and other equipment, and efficiency is also improved from the standpoint of equipment placement. Because it is good, it is especially often used.
ところで、以上のようなバッファ形ガス遮断器において
、１遮断点当たりの電圧が高電圧化しているなかで消弧
性能を向上させるためには、開極速度を早くする必要が
ある。しかし上述の構成のバッファ形ガス遮断器で、開
極速度を早くするためには、駆動機構の駆動力を大きく
しなければならず、機器全体が大型化するとともにコス
ト高になる。これに対し、駆動機構の駆動力を変えるこ
となく、前記固定電極を可動電極の移動方向と反対方向
に移動させることにより、相対的な開極速度を早くする
方式がある。By the way, in the buffer type gas circuit breaker as described above, in order to improve the arc extinguishing performance as the voltage per one breaking point is increasing, it is necessary to increase the opening speed. However, in order to increase the opening speed of the buffer type gas circuit breaker configured as described above, the driving force of the drive mechanism must be increased, which increases the size and cost of the entire device. On the other hand, there is a method of increasing the relative opening speed by moving the fixed electrode in the opposite direction to the moving direction of the movable electrode without changing the driving force of the drive mechanism.
この固定電極（以下第１可動電極と称す）および可動電
極（以下第２可動電極と称す）の画電極を可動的に配置
した方式のバッファ形ガス遮断器においては、第１可動
電極を固定支持導体に摺動接触しながら動くように支持
せしめ、第２可動電極を駆動機構によって操作ロンドを
介して軸方向に進退させる時に、その操作ロンドの動き
をリンク機構を介して転換して第１可動電極を第２可動
電極の動き方向と反対方向に動かすことにより、第１お
よび第２可動電極間の相対開極速度を早くなるよう構成
したものである。In a buffer type gas circuit breaker in which a fixed electrode (hereinafter referred to as the first movable electrode) and a movable electrode (hereinafter referred to as the second movable electrode) are movably arranged, the first movable electrode is fixedly supported. The second movable electrode is supported so as to move while slidingly contacting the conductor, and when the second movable electrode is moved forward and backward in the axial direction via the operating iron by the drive mechanism, the movement of the operating iron is converted via the link mechanism to move the second movable electrode to the first movable electrode. By moving the electrode in the opposite direction to the movement direction of the second movable electrode, the relative opening speed between the first and second movable electrodes is increased.
（発明が解決しようとする課題）
ところで、固定電極の第１可動電極と可動電極の第２可
動電極とを相対的に動かすように構成した高電圧遮断器
において、遮断器を開閉動作する場合、第１可動電極は
操作ロンドにリンク機構を介して連結した絶縁ロッドに
より操作ロンドと反対側に移動する。開閉動作する際に
第１可動電極は、固定支持導体と電流を流す通電部を介
して摺動的に支持しなければならない。この場合、第１
可動電極の外側に通電部を設ければ良いが、この通電部
を外径が大きくなり、他の部分との協調が悪くなるばか
りでなく、その部分の電界が高くなり、タンク径を大き
くしなければならない。これが遮断器全体の大形化を誘
因し、かつ開極速度の速進化の障害となる。(Problem to be Solved by the Invention) By the way, in a high voltage circuit breaker configured to move a first movable electrode of a fixed electrode and a second movable electrode of a movable electrode, when opening/closing the circuit breaker, The first movable electrode is moved to the side opposite to the operating rond by an insulating rod connected to the operating rond via a link mechanism. During the opening/closing operation, the first movable electrode must be slidably supported via the fixed support conductor and the current-carrying part through which current flows. In this case, the first
It would be better to provide a current-carrying part on the outside of the movable electrode, but this would not only increase the outer diameter of this current-carrying part and cause poor coordination with other parts, but also increase the electric field in that part, making it difficult to increase the tank diameter. There must be. This leads to an increase in the size of the circuit breaker as a whole and becomes an obstacle to the rapid evolution of the opening speed.
本発明の目的は、第１可動電極と摺動する通電部を支持
する固定支持導体が第１可動電極の外径と同程度にする
ことにより、タンク径を大きくしなくても電界強度が許
容範囲内にあって信頼性のあるバッファ遮断器を提供す
ることにある。An object of the present invention is to make the fixed support conductor that supports the current-carrying part that slides with the first movable electrode have the same outer diameter as the first movable electrode, so that the electric field strength is permissible without increasing the tank diameter. The object of the present invention is to provide a buffer circuit breaker that is within the range and reliable.
［発明の構成］
（課題を解決するための手段）
本発明のバッファ形ガス遮断器は、消弧性ガスを充填し
た容器内に電路を作る接離自在な第１可動電極部および
第２可動電極部を対向して配置し、前記第１可動電極部
は複数個の通孔を有するリング状フランジの中心部にリ
ブを介して第１可動アーク電極を突設するとともにその
周りを第１可動シールドで囲んで構成され、これをフラ
ンジの通孔を固定導電部材で支持された複数本の通電用
導体に移動可能に挿入するとともにその通電用導体と第
１可動シールドとの間に通電摺動接触子を設け、前記第
２可動電極部は前記第１可動アーク電極を駆動機構で進
退される操作ロンドの先端に設けられかつその操作ロッ
ドにはその進退運動によって消弧性ガスを圧縮膨張させ
て両可動アーク電極間に生じたアークに吹き付けるバッ
ファ機器を備え、さらにこの第２可動電極部の操作ロン
ドと前記第１可動電極部のフランジに一端が固定され他
端が第２可動電極部に沿うて延長した絶縁ロンドの他端
との間に操作ロッドの進退運動を変換して第１可動電極
部を第２可動電極部の運動と相反する方向に動かすリン
ク機構を設けたことを特徴とするものである。[Structure of the Invention] (Means for Solving the Problems) The buffer type gas circuit breaker of the present invention includes a first movable electrode part and a second movable electrode part that can be freely connected and separated to form an electric path in a container filled with an arc-extinguishing gas. The electrode parts are arranged to face each other, and the first movable electrode part has a first movable arc electrode protruding from the center of a ring-shaped flange having a plurality of through holes through a rib, and a first movable arc electrode protruding from the center of the ring-shaped flange having a plurality of through holes. The shield is surrounded by a shield, which is movably inserted through the through hole of the flange into a plurality of current-carrying conductors supported by a fixed conductive member, and a current-carrying sliding member is inserted between the current-carrying conductor and the first movable shield. A contactor is provided, and the second movable electrode portion is provided at the tip of an operating rod that advances and retreats from the first movable arc electrode by a drive mechanism, and the operating rod compresses and expands an arc-extinguishing gas by the advancing and retreating movement of the operating rod. and a buffer device for blowing onto the arc generated between the two movable arc electrodes, one end of which is fixed to the operating iron of the second movable electrode part and the flange of the first movable electrode part, and the other end of which is fixed to the second movable electrode part. A link mechanism is provided between the insulating iron and the other end of the insulating rod extending along the rod and converting the forward and backward movement of the operating rod to move the first movable electrode part in a direction opposite to the movement of the second movable electrode part. It is something to do.
（作 用）
本発明においては、遮断動作時は操作ロッドの動きがリ
ンク機構で変換されて絶縁ロンドを介して第１可動電極
部を第２可動電極部と反対方向に動かすことにより、画
電極部の開極速度が速くなる。また第１可動電極部の第
１可動アーク電極および第１可動シールドをフランジに
まとめて支持し、このフランジを固定支持されて通電用
導体に移動可能に挿入して組立てたことにより、外径寸
法を大きくすることなく、また電界の集中を防止するこ
とができる。(Function) In the present invention, during the cut-off operation, the movement of the operating rod is converted by the link mechanism to move the first movable electrode part in the opposite direction to the second movable electrode part via the insulating iron, so that the picture electrode The opening speed of the area becomes faster. In addition, the first movable arc electrode and the first movable shield of the first movable electrode part are collectively supported on a flange, and this flange is fixedly supported and movably inserted into the current-carrying conductor for assembly, so that the outer diameter dimension It is possible to prevent concentration of the electric field without increasing the field.
（実施例）
以下本発明を第１図、第２図および第３図に示す実施例
を参照して説明する。本発明のバッファ形ガス遮断器に
おける遮断部の投入状態を示す第１図において、本来遮
断器においては固定電極部と可動電極部とを備えている
ものでおるが、本発明におけるバッファ形ガス遮断器に
おいては、図示しない遮断器タンク内に固定電極部に相
当する第１可動電極部１と可動電極部に相当する第２可
動電極部２とを相対的に動き得るように配置している。(Embodiments) The present invention will be described below with reference to embodiments shown in FIGS. 1, 2, and 3. In FIG. 1 showing the closing state of the interrupting part in the buffer type gas circuit breaker of the present invention, the circuit breaker is originally equipped with a fixed electrode part and a movable electrode part, but the buffer type gas circuit breaker of the present invention In the circuit breaker, a first movable electrode section 1 corresponding to a fixed electrode section and a second movable electrode section 2 corresponding to a movable electrode section are arranged in a circuit breaker tank (not shown) so as to be movable relative to each other.
すなわち、第１可動電極部１には、第１可動アーク電極
３を有し、この第１可動アーク電極３は第１図および第
３図に示すように導電材料製の７ランジ４の中心のリブ
５に一体的に強固に支持されている。このフランジ４の
内周径には第１可動アーク電極３を囲む第１可動シール
ド６が設けられ、またそのフランジ４の内周面には、第
３図に示すように複数の通孔７が設けられ、ざらにその
外周径には全体外径を大きく囲む外側シールド８を設け
ている。That is, the first movable electrode part 1 has a first movable arc electrode 3, and this first movable arc electrode 3 is located at the center of seven flange 4 made of a conductive material, as shown in FIGS. 1 and 3. It is strongly supported integrally with the rib 5. A first movable shield 6 surrounding the first movable arc electrode 3 is provided on the inner circumference of the flange 4, and a plurality of through holes 7 are provided on the inner circumference of the flange 4, as shown in FIG. An outer shield 8 is provided roughly surrounding the entire outer diameter.
このように構成された第１可動電極部１は、そのフラン
ジ４の通孔７を図示しない遮断器タンク内に絶縁支持さ
れた固定通電部材９から突出する通電用導体１０に第３
図のように通すことによって摺動的に支持される。さら
に通電用導体１０の端部を７ランジ１０ｂで連結し、こ
の７ランジ１０ｂに通電接触子１０ａを設けて第１可動
電極部１の第１可動シールド６と摺動接触させている。The first movable electrode part 1 configured in this manner has a third current-carrying conductor 10 projecting from a fixed current-carrying member 9 that is insulated and supported in a circuit breaker tank (not shown) through the through hole 7 of the flange 4.
It is slidably supported by passing it through as shown in the figure. Furthermore, the ends of the current-carrying conductor 10 are connected by seven flange 10b, and the seven flange 10b is provided with a current-carrying contact 10a to make sliding contact with the first movable shield 6 of the first movable electrode section 1.
なお、固定通電部材９は図示しない一方の日出ブッシン
グに接続されて一方の線路端子となる。Note that the fixed current-carrying member 9 is connected to one sunrise bushing (not shown) and serves as one line terminal.
第１可動電極部１に対峙する第２可動電極部２は、第２
可動アーク電極１１を有し、この第２可動アーク電極１
１は絶縁ロッド１２を介して図示しない開閉駆動機構で
進退される操作ロッド１３の先端に設けられ、その周り
を絶縁ノズル１４で囲み、この絶縁ノズル１４の周りに
第１可動電極部１の第１可動シールド６と接離する第２
可動通電接触子１５を設けている。The second movable electrode part 2 facing the first movable electrode part 1 is
It has a movable arc electrode 11, and this second movable arc electrode 1
1 is provided at the tip of an operating rod 13 that is moved forward and backward by an opening/closing drive mechanism (not shown) via an insulating rod 12, and is surrounded by an insulating nozzle 14. 1 movable shield 6 and the 2nd
A movable current-carrying contact 15 is provided.
導電材料製の操作ロッド１３の先端を利用して図示のよ
うなバッファシリンダ１６を設け、バッファピストン１
７との相対関係でバッファ至１８を形成している。この
パンツ１ピストン１７はピストンロッド１９および絶縁
支持部材２０を介して図示しない遮断器タンク内に固定
支持される。A buffer cylinder 16 as shown in the figure is provided using the tip of the operating rod 13 made of conductive material, and the buffer piston 1
7 forms a buffer to 18. This pants 1 piston 17 is fixedly supported within a circuit breaker tank (not shown) via a piston rod 19 and an insulating support member 20.
バッファ至１８およびピストンロッド１９を貫通する操
作ロッド１３の途中と絶縁支持部材２０との間にリンク
機構２１を設けている。このリンク機構２１は、第１図
に示すように絶縁支持部材２０に固定した支持腕２１ａ
、 ２１ａにリンク２１ｔ） 、 ２１ｂを回動自在
に設け、このリンク２１ｂ 、 ２１ｂの一端と操作ロ
ッド１３との間をリンク２１Ｃ、２１Ｃで回動自在に連
結し、さらにリンク２１ｂ 、 ２１ｂの他端と絶縁ロ
ンド２２とをリンク２１ｄ 、 ２１ｄで回動自在に連
結して構成されている。A link mechanism 21 is provided between the insulating support member 20 and the middle of the operating rod 13 passing through the buffer 18 and the piston rod 19. This link mechanism 21 includes a support arm 21a fixed to an insulating support member 20 as shown in FIG.
, 21a are rotatably provided with links 21t) and 21b, one end of these links 21b and 21b and the operating rod 13 are rotatably connected by links 21C and 21C, and the other ends of links 21b and 21b are rotatably connected. and an insulating iron 22 are rotatably connected by links 21d and 21d.
しかして、そのリンク機構２０に一端を連結した絶縁ロ
ンド２２はピストンロッド１９．バッファシリンダ１６
．第２可動電極部２および第１可動電極部１の第１可動
シールド６の外側に沿うて延長されたのち、その端部を
第１可動電極部１のフランジ４に固定している。したが
って、第１図における操作ロッド１３を図示右方へ移動
させると、この動きはリンク機構２０で方向転換されて
絶縁ロッド２２を図示左方へ動かすことになる。The insulating iron 22 connected at one end to the link mechanism 20 connects to the piston rod 19. buffer cylinder 16
．． After being extended along the outside of the first movable shield 6 of the second movable electrode section 2 and the first movable electrode section 1, the ends thereof are fixed to the flange 4 of the first movable electrode section 1. Therefore, when the operating rod 13 in FIG. 1 is moved to the right in the drawing, this movement is reversed by the link mechanism 20 and moves the insulating rod 22 to the left in the drawing.
次に以上のような構成を有する本発明のバッファ形ガス
遮断器の動作にぢいて説明する。第１図の投入状態の遮
断器が遮断指令を受けると開極動作が始まる。操作ロッ
ド１３が絶縁ロッド１２を介して図示していない駆動装
置の方向の図示左方に移動する。操作ロッド１３が動作
すると操作ロッド１３に取付けられたバッファシリンダ
１６が操作ロッド１３と同一方向の図示左方に移動する
。それと共にバッファシリンダ１６とピストン１７との
間に構成されたバッファ至１８のガスを圧縮し始める。Next, the operation of the buffer type gas circuit breaker of the present invention having the above configuration will be explained. When the circuit breaker in the closed state shown in FIG. 1 receives a shutdown command, the opening operation begins. The operating rod 13 moves to the left in the drawing in the direction of a drive device (not shown) via the insulating rod 12. When the operating rod 13 operates, the buffer cylinder 16 attached to the operating rod 13 moves to the left in the figure in the same direction as the operating rod 13. At the same time, the gas in the buffer 18 formed between the buffer cylinder 16 and the piston 17 starts to be compressed.
バッファ至１８で圧縮されたガス圧力が上昇した絶縁ガ
スは絶縁ノズル１４と可動アーク電極１１で囲まれた空
間を通って可動アーク電極１１と第２可動アーク電極３
との間に生じたアークＡに高速流のガスを吹き付けて遮
断する。The insulating gas whose gas pressure has increased after being compressed in the buffer 18 passes through the space surrounded by the insulating nozzle 14 and the movable arc electrode 11 and reaches the movable arc electrode 11 and the second movable arc electrode 3.
A high-velocity gas is blown onto the arc A generated between the
第２図は本発明のバッファ形ガス遮断器の開極動作の途
中を示している。ガス遮断器が遮断動作する際、操作ロ
ッド１３は、第１図から第２図の位置まで図の右方向に
移動する。移動すると同時に第１連結棒２１ｃの力はリ
ンク２１ｂの支点２１ｅを中心とする回転運動に変換さ
れる。リンク２１ｔｌは、第２連結棒２１ｄを図左方向
に動かす力として加える。その力により絶縁ロッド２２
を図左方向へ移動させる。絶縁ロッド２２は第１可動電
極部１のフランジ４に固定されているため、それに取付
けられた第１可動シールド６を図左方向に移動させる。FIG. 2 shows the buffer type gas circuit breaker of the present invention in the middle of an opening operation. When the gas circuit breaker performs a shutoff operation, the operating rod 13 moves rightward in the figure from the position shown in FIG. 1 to the position shown in FIG. At the same time as the first connecting rod 21c moves, the force of the first connecting rod 21c is converted into a rotational movement about the fulcrum 21e of the link 21b. The link 21tl applies a force to move the second connecting rod 21d to the left in the figure. Due to that force, the insulating rod 22
Move to the left in the figure. Since the insulating rod 22 is fixed to the flange 4 of the first movable electrode section 1, the first movable shield 6 attached thereto is moved to the left in the figure.
通電接触子１０ａは第１可動シールド６の円筒の外面を
摺動する。通電用導体１０を連結するフランジ１０ｂは
通電用導体１０に取付けられ、通電用導体１０はタンク
あるいは支持部材９から支持固定されている。これらの
一連の動作は遮断動作でおるが、投入動作はこの動作の
反対動作でおる。The energizing contact 10a slides on the cylindrical outer surface of the first movable shield 6. A flange 10b connecting the current-carrying conductor 10 is attached to the current-carrying conductor 10, and the current-carrying conductor 10 is supported and fixed from a tank or a support member 9. These series of operations are called a shutoff operation, but the closing operation is the opposite of this operation.
本発明においては、投入状態から操作ロッド１３が図示
していない駆動装置側（図の右の方向）に駆動されると
同時に、リンク装！２０によって絶縁ロッド２２が操作
ロッド１３の移動方向と反対方向に移動し、第１可動電
極部１も絶縁ロッド２２によって図示左方へ移動する。In the present invention, the operating rod 13 is driven from the closed state toward the drive device (not shown) (toward the right in the figure), and at the same time, the link device! 20 moves the insulating rod 22 in the opposite direction to the moving direction of the operating rod 13, and the first movable electrode section 1 also moves to the left in the figure by the insulating rod 22.
第１可動電極部１のフランジ４には絶縁ロッド２２が取
付けられており、その円周状に複数個の貫通孔７がおい
ており、この貫通孔７を固定部９で支持固定されている
複数本の通電用導体１０を通るため、第１可動電極部１
のうち固定部から支持固定されている通電用導体１０と
移動する部材であるフランジ４および第１可動シールド
６が互いにぶつからずに動作することが可能でおる。ま
た、通電用導体１０と絶縁ロッド２２どの取りつけ位置
がほぼ同一円周状におり、第１可動電極部１の外径もそ
れほど大きくならないため、高電圧部が局部的に電界が
高くなったり、タンク電位が高くなったりすることがな
くなる。An insulating rod 22 is attached to the flange 4 of the first movable electrode part 1, and a plurality of through holes 7 are provided around the circumference of the insulating rod 22, and the through holes 7 are supported and fixed by a fixed part 9. The first movable electrode part 1 passes through a plurality of current-carrying conductors 10.
Of these, the current-carrying conductor 10 supported and fixed from the fixed portion, the flange 4 and the first movable shield 6, which are moving members, can operate without colliding with each other. In addition, since the mounting positions of the current-carrying conductor 10 and the insulating rod 22 are approximately the same circumferentially, and the outer diameter of the first movable electrode portion 1 is not so large, the electric field may become locally high in the high voltage portion. This prevents the tank potential from becoming high.
この様な構成により、消弧至の外径をさほど大きくしな
くても第１可動電極部１側の電界強度を許容値以下にお
さえることが可能であり、コンパクトで信頼性の高いバ
ッファ形遮断器を提供することができる。With this configuration, the electric field strength on the first movable electrode part 1 side can be kept below the allowable value without increasing the outer diameter of the arc extinguisher, resulting in a compact and highly reliable buffer type interrupter. equipment can be provided.
［発明の効果］
以上のように本発明においては、遮断動作時に操作ロッ
ドの動きがリンク機構で変換されて絶縁ロッドを介して
第１可動電極部を第２可動電極部と反対方向に動かすこ
とにより、画電極部の開極速度が速くなる。また第１可
動電極部の第１可動アーク電極および第１可動シールド
をリング状のフランジにまとめて支持し、このフランジ
を固定支持された通電用導体に移動可能に挿入して組立
てたことにより、外径寸法を大きくすることなく、また
ｉ界の集中を防止することができる。[Effects of the Invention] As described above, in the present invention, the movement of the operating rod is converted by the link mechanism during the interruption operation, and the first movable electrode part is moved in the opposite direction to the second movable electrode part via the insulating rod. This increases the opening speed of the picture electrode section. In addition, the first movable arc electrode and the first movable shield of the first movable electrode part are collectively supported by a ring-shaped flange, and this flange is movably inserted into the fixedly supported current-carrying conductor to assemble. Concentration of the i-field can be prevented without increasing the outer diameter.
第１図および第２図は本発明のバッファ形ガス遮断器の
投入状態および開極動作状態を示す断面図、第３図は第
２図Ｉ［［−１［１線に沿う断面図である。
１・・・第１可動電極部
２・・・第２可動電極部
３・・・第１可動アーク電極
４・・・フランジ
５・・・リブ
６・・・第１可動シールド
７・・・通孔
８・・・外側シールド
９・・・固定通電部材
１０・・・通電用導体
１１・・・第２可動アーク電極
１２・・・絶縁ロッド
１３・・・操作ロッド
１４・・・絶縁ノズル
１５・・・第２可動通電接触子
１６・・・バッファシリンダ
１７・・・バッファピストン
１８・・・バッファ至
１９・・・ピストンロンド
２０・・・絶縁部材
２１・・・リンク機構
２２・・・絶縁ロッド
代理人 弁理士 則 近 憲 佑
同 第子丸 健1 and 2 are cross-sectional views showing the closing state and opening operation state of the buffer type gas circuit breaker of the present invention, and FIG. 3 is a cross-sectional view along the line I[[-1[1] of FIG. . 1...First movable electrode part 2...Second movable electrode part 3...First movable arc electrode 4...Flange 5...Rib 6...First movable shield 7...Thread Hole 8...Outer shield 9...Fixed energizing member 10...Electrifying conductor 11...Second movable arc electrode 12...Insulating rod 13...Operation rod 14...Insulating nozzle 15... ...Second movable energizing contact 16...Buffer cylinder 17...Buffer piston 18...Buffer to 19...Piston rond 20...Insulating member 21...Link mechanism 22...Insulating rod Agent Patent Attorney Noriyuki Chika Yudo Ken Daishimaru
Claims (1)
１可動電極部および第２可動電極部を対向して配置し、
前記第１可動電極部は複数個の通孔を有するリング状フ
ランジの中心部にリブを介して第１可動アーク電極を突
設するとともにその周りを第１可動シールドで囲んで構
成され、これをフランジの通孔を固定導電部材で支持さ
れた複数本の通電用導体に移動可能に挿入するとともに
その通電用導体と第１可動シールドとの間に通電摺動接
触子を設け、前記第２可動電極部は前記第１可動アーク
電極を駆動機構で進退される操作ロッドの先端に設けら
れかつその操作ロッドにはその進退運動によつて消弧性
ガスを圧縮膨張させて両可動アーク電極間に生じたアー
クに吹き付けるバッファ機構を備え、さらにこの第２可
動電極部の操作ロッドと前記第１可動電極部のフランジ
に一端が固定され他端が第２可動電極部に沿うて延長し
た絶縁ロッドの他端との間に操作ロッドの進退運動を変
換して第１可動電極部を第２可動電極部の運動と相反す
る方向に動かすリンク機構を設けたことを特徴とするバ
ッファ形ガス遮断器。A first movable electrode part and a second movable electrode part which can be freely connected and separated to form an electric path are arranged facing each other in a container filled with an arc-extinguishing gas,
The first movable electrode part is constructed by protruding a first movable arc electrode through a rib from the center of a ring-shaped flange having a plurality of through holes, and surrounding the first movable arc electrode with a first movable shield. The through hole of the flange is movably inserted into a plurality of current-carrying conductors supported by a fixed conductive member, and a current-carrying sliding contact is provided between the current-carrying conductor and the first movable shield, and the second movable The electrode section is provided at the tip of an operating rod that moves the first movable arc electrode forward and backward by a drive mechanism, and compresses and expands an arc-extinguishing gas in the operating rod by moving the first movable arc electrode back and forth between the two movable arc electrodes. The insulating rod is provided with a buffer mechanism for blowing onto the generated arc, and has one end fixed to the operating rod of the second movable electrode section and the flange of the first movable electrode section, and the other end extended along the second movable electrode section. A buffer type gas circuit breaker, characterized in that a link mechanism is provided between the other end of the operating rod and the operating rod to convert the forward and backward movement of the operating rod to move the first movable electrode section in a direction opposite to the movement of the second movable electrode section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7440988A JPH0738290B2 (en) | 1988-03-30 | 1988-03-30 | Puffer type gas circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7440988A JPH0738290B2 (en) | 1988-03-30 | 1988-03-30 | Puffer type gas circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01248423A true JPH01248423A (en) | 1989-10-04 |
| JPH0738290B2 JPH0738290B2 (en) | 1995-04-26 |
Family
ID=13546364
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7440988A Expired - Lifetime JPH0738290B2 (en) | 1988-03-30 | 1988-03-30 | Puffer type gas circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0738290B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008147194A (en) * | 2006-12-11 | 2008-06-26 | Abb Technology Ag | Circuit breaker equipped with gear having dead center position |
-
1988
- 1988-03-30 JP JP7440988A patent/JPH0738290B2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008147194A (en) * | 2006-12-11 | 2008-06-26 | Abb Technology Ag | Circuit breaker equipped with gear having dead center position |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0738290B2 (en) | 1995-04-26 |
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