JPH0340324A - Buffer type gas blast circuit breaker - Google Patents
Buffer type gas blast circuit breakerInfo
- Publication number
- JPH0340324A JPH0340324A JP17404089A JP17404089A JPH0340324A JP H0340324 A JPH0340324 A JP H0340324A JP 17404089 A JP17404089 A JP 17404089A JP 17404089 A JP17404089 A JP 17404089A JP H0340324 A JPH0340324 A JP H0340324A
- Authority
- JP
- Japan
- Prior art keywords
- movable
- buffer
- rod
- movable electrode
- circuit breaker
- 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 23
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 230000037431 insertion Effects 0.000 abstract 1
- 238000003780 insertion Methods 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/02—Details
- H01H2033/028—Details the cooperating contacts being both actuated simultaneously in opposite directions
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/88—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts
- H01H33/90—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism
- H01H33/904—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid the flow of arc-extinguishing fluid being produced or increased by movement of pistons or other pressure-producing parts this movement being effected by or in conjunction with the contact-operating mechanism characterised by the transmission between operating mechanism and piston or movable contact
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 substation or switchyard of a power system.
（従来の技術）
近年、送電系統の大容量化に伴い、変電所や開閉所に用
いられる遮断器の遮断容量が増大し、且つ高い信頼性が
要求されている。この様な遮断器の信頼性を高めるため
には、部品数を少なくし、構造を簡略化することが重要
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。つまり、遮断器の１点当たりの遮断容量を増加さ
せることが望まれている。(Prior Art) In recent years, with the increase in the capacity of power transmission systems, the breaking capacity of circuit breakers used in substations and switchyards has increased, and high reliability has been required. In order to increase the reliability of such 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. In other words, it is desired to increase the breaking capacity per point of the circuit breaker.
この様に、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を高
める必要がある。例えば、現在５５０ＫＶ系統では、遮
断電流が６３ＫＡのものまで実用化されている。この５
５０ＫＶ−６３ＫＡ級の遮断器は、４点切りで構成され
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。As described above, in order to improve the interrupting performance of a conventional general buffer type gas circuit breaker, it is necessary to increase the gas pressure in the buffer chamber. For example, in a 550KV system, one with a breaking current of 63KA is currently in practical use. This 5
A 50KV-63KA class circuit breaker is constructed with four break points, but in order to improve the reliability of the circuit breaker, it is important to reduce the number of break points and the number of parts.
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
クに絶縁ガスを吹付は消弧する、いわゆるバッファ形ガ
ス遮断器である。これは、遮断部の構造が簡単な上に、
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Ｓ Ｆ６
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を可能とし
、機器の配置の点からも効率が良いので、特に良く使用
されている。In order to achieve this improvement in breaking capacity, conventional 168
What has been used in power transmission voltage systems of KV or higher is the so-called buffer type gas circuit breaker, which extinguishes the arc by spraying an insulating gas onto it. This is because the structure of the cut-off part is simple, and
It has excellent insulation and arc extinguishing performance due to the enclosed SF6 gas. In addition, the entire equipment at the substation was converted to SF6.
Closed gas-insulated switchyards are particularly popular because the insulating gas used enables insulation coordination between the circuit breaker and other equipment, and is efficient in terms of equipment arrangement.
第４図及び第５図に、従来から用いられているバッファ
形ガス遮断器の構造を示した。4 and 5 show the structure of a conventionally used buffer type gas circuit breaker.
即ち、第４図に示した様に、ガスタンク１内に固定電極
２と可動電極３とが対向して設けられ、画電極の外側を
包囲するように絶縁筒４が設けられている。また、固定
電極２及び可動電極３には、それぞれ導体５．６が接続
され、さらに、可動′；ｄ極３には可動電極を駆動する
駆動装置７が連結されている。なお、可動電極３はガス
タンク１に対して支持絶縁筒１０を介して取付けられて
いる。That is, as shown in FIG. 4, a fixed electrode 2 and a movable electrode 3 are provided facing each other in a gas tank 1, and an insulating tube 4 is provided so as to surround the outside of the picture electrode. Conductors 5 and 6 are connected to the fixed electrode 2 and the movable electrode 3, respectively, and a drive device 7 for driving the movable electrode is connected to the movable electrode 3. Note that the movable electrode 3 is attached to the gas tank 1 via a supporting insulating cylinder 10.
また、上述した様なバッファ形ガス遮断器の消弧室は第
５図に示した様に構成されている。即ち、固定電極２は
、その中央に設けられた固定アーク電極８とその外側に
設けられた円筒状の固定通電電極９とから構成されてい
る。一方、可動電極３は、中空状の操作ロッド１３に固
定されたバッファシリンダ１２、可動アーク電極１４及
びそれを取り囲む絶縁ノズル１５とから構成されている
。Further, the arc extinguishing chamber of the buffer type gas circuit breaker as described above is constructed as shown in FIG. That is, the fixed electrode 2 is composed of a fixed arc electrode 8 provided at the center and a cylindrical fixed current-carrying electrode 9 provided outside the fixed arc electrode 8. On the other hand, the movable electrode 3 includes a buffer cylinder 12 fixed to a hollow operating rod 13, a movable arc electrode 14, and an insulating nozzle 15 surrounding it.
このバッファシリンダ１２内には、固定部（図示せず）
に固定されているバッファピストン１１が配設され、バ
ッファシリンダ１２とバッファピストン１１によって、
バッファ室１７が形成されている。Inside this buffer cylinder 12, there is a fixed part (not shown).
A buffer piston 11 fixed to is disposed, and the buffer cylinder 12 and buffer piston 11 provide
A buffer chamber 17 is formed.
この様に構成された従来のバッファ形ガス遮断器におい
ては、操作ロッド１３が駆動装置７によって図中左右に
往復運動すると、可動電極３は対向する固定電極２との
間で開閉動作を行い、電流を遮断する。ここで、第５図
は遮断動作中の状態を示しており、この状態になると、
固定アーク電極８と可動アーク電極１４との間にアーク
１６が発生する。そして、遮断動作によりバッファシリ
ンダ１２が図中右方向へ移動し、バッファシリンダ１２
とバッファピストン１１によって形成されるバッファ室
１７内で消弧性ガスが圧縮されると、この消弧性ガス流
が絶縁ノズル１５によって導かれ、アーク１６に吹き付
けられ、これを消弧する。In the conventional buffer type gas circuit breaker configured in this manner, when the operating rod 13 is reciprocated from side to side in the figure by the drive device 7, the movable electrode 3 performs an opening/closing operation between the opposing fixed electrode 2, Cut off the current. Here, FIG. 5 shows a state in which the shutoff operation is in progress, and in this state,
An arc 16 is generated between the fixed arc electrode 8 and the movable arc electrode 14. Then, the buffer cylinder 12 moves to the right in the figure due to the shutoff operation, and the buffer cylinder 12
When the arc-extinguishing gas is compressed in the buffer chamber 17 formed by the buffer piston 11, the arc-extinguishing gas flow is guided by the insulating nozzle 15 and blown onto the arc 16 to extinguish it.
ところで、上記の様な構成を有する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、消弧性能を向上させるためには、開極速度を速く
する必要があるが、そのためには、駆動装置７の駆動力
を大きくしなければならず、機器全体が大型化し、コス
ト高になる。By the way, in the buffer type gas circuit breaker having the above configuration, as the voltage per breaking point is becoming higher, it is necessary to increase the opening speed in order to improve the arc extinguishing performance. For this purpose, the driving force of the drive device 7 must be increased, which increases the size of the entire device and increases the cost.
そこで、近年、駆動装置の駆動力を変えることなく、前
記固定電極２を可動電極３の移動方向とは反対方向に移
動させることにより、相対的な開極速度を増大させたダ
ブルモーション形遮断器が用いられている。このダブル
モーション形遮断器は、例えば、第６図に示した様に、
第１可動電極３に対向配置した第２可動電極２３を、第
１可動電極３の移動方向とは反対の方向に移動するもの
である。即ち、バッファシリンダ１２の外周には、バッ
ファシリンダ１２と一定の間隔を保持して複数本の絶縁
ロッド２９が配設されている。この絶縁ロッド２っは、
その駆動装置側の端部において、操作ロッド１３との間
に設けられたリンク装置１８を介して操作ロッド１３と
連結されている。このリンク装置１８は、リンク１８ａ
の両端にそれぞれ回動自在に連結された第１．第２の連
結棒１８ｂ、１８ｃ及びリンク１８ａを支持するリンク
支持部１８ｄより構成されている。また、リンク１８ａ
は、所定のリンク比に設定されたリンク支持部１８ｄの
支点１８ｅを軸にして、リンク支持部１８ｄに回動自在
に支持されている。さらに、第１．第２の各連結棒１８
ｂ、１８ｃは、その−端において、それぞれ操作ロッド
１３、絶縁ロッド２９に回動自在に連結されている。な
お、リンク支持部１８ｄは、図示していない容器に絶縁
固定された絶縁筒１９に固定されている。一方、絶縁ロ
ッド２９の駆動装置と反対側の端部には、これと同軸に
通電円筒２０が配設され、この通電円筒２０が駆動装置
と反対側に支持固定された通電用導体２１の通電部２１
ａ内を摺動するように構成されている。この通電円筒２
０の駆動装置側軸線上には、第２可動アーク電極２２が
設けられ、第１可動電極３と開閉動作を行う第２可動電
極２３が構成されている。なお、第６図はバッファ形ガ
ス遮断器の投入状態を示し、第１可動電極３と第２可動
電極２３とは接触状態にある。Therefore, in recent years, double motion circuit breakers have been developed in which the relative opening speed is increased by moving the fixed electrode 2 in the opposite direction to the moving direction of the movable electrode 3 without changing the driving force of the drive device. is used. This double motion type circuit breaker, for example, as shown in Figure 6,
The second movable electrode 23 disposed opposite to the first movable electrode 3 is moved in a direction opposite to the moving direction of the first movable electrode 3. That is, a plurality of insulating rods 29 are disposed around the outer periphery of the buffer cylinder 12 at a constant distance from the buffer cylinder 12 . This insulating rod 2 is
At its end on the drive device side, it is connected to the operating rod 13 via a link device 18 provided between it and the operating rod 13 . This link device 18 includes a link 18a
The first one is rotatably connected to both ends of the first one. It is composed of second connecting rods 18b, 18c and a link support portion 18d that supports the link 18a. Also, link 18a
is rotatably supported by the link support portion 18d around a fulcrum 18e of the link support portion 18d set to a predetermined link ratio. Furthermore, the first. Each second connecting rod 18
b and 18c are rotatably connected to the operating rod 13 and the insulating rod 29, respectively, at their negative ends. Note that the link support portion 18d is fixed to an insulating cylinder 19 that is insulated and fixed to a container (not shown). On the other hand, an energizing cylinder 20 is disposed coaxially with the end of the insulating rod 29 opposite to the driving device, and this energizing cylinder 20 energizes the energizing conductor 21 supported and fixed on the opposite side of the driving device. Part 21
It is configured to slide within a. This energized cylinder 2
A second movable arc electrode 22 is provided on the axis of the drive unit 0, and a second movable electrode 23 that opens and closes with the first movable electrode 3 is configured. Note that FIG. 6 shows the buffer type gas circuit breaker in a closed state, and the first movable electrode 3 and the second movable electrode 23 are in contact.
以上の様な構成を有する従来のバッファ形ガス遮断器に
おいては、次の様にして遮断動作が行われる。即ち、第
６図に示した投入状態において、駆動装置が操作される
と、操作ロッド１３が所定の速度で駆動装置側（図中右
方向）に駆動され、その先端に固定された第１可動電極
３が右方向に移動し、第２可動電極２３との間で遮断動
作が開始される。一方、この操作ロッド１３の動作に伴
って、操作ロッド１３に連結された第１の連結棒１８ｂ
も同方向へ移動する。また、リンク１８ａの一端にも同
方向への力が加わるため、リンク１８ａは支点１８ｅを
中心に反時計方向に回動する。In the conventional buffer type gas circuit breaker having the above-described configuration, the shutoff operation is performed as follows. That is, when the drive device is operated in the closed state shown in FIG. 6, the operating rod 13 is driven toward the drive device (rightward in the figure) at a predetermined speed, and the first movable rod 13 fixed to the tip thereof is driven toward the drive device (rightward in the figure) at a predetermined speed. The electrode 3 moves to the right, and a disconnection operation between the electrode 3 and the second movable electrode 23 is started. On the other hand, as the operating rod 13 moves, the first connecting rod 18b connected to the operating rod 13
also move in the same direction. Furthermore, since a force in the same direction is applied to one end of the link 18a, the link 18a rotates counterclockwise about the fulcrum 18e.
その結果、リンク１８ａの他端は、図中左方向へ回動す
るため、回部に連結されている第２の連結棒１８ｃが図
中左方向へ移動し、これに連結された絶縁ロッド２９も
図中左方向へ移動する。従って、絶縁ロッド２９に固定
された第２可動電極２３も図中左方向へ移動して、第１
可動電極３から開離し、第７図に示した様な開極状態に
移行する。As a result, the other end of the link 18a rotates to the left in the figure, so the second connecting rod 18c connected to the rotating portion moves to the left in the figure, and the insulating rod 29 connected to it moves to the left in the figure. also moves to the left in the figure. Therefore, the second movable electrode 23 fixed to the insulating rod 29 also moves to the left in the figure, and the first
It separates from the movable electrode 3 and transitions to an open state as shown in FIG.
即ち、操作ロッド１３の開極動作に伴って、第１可動電
極３及び第２可動電極２３の両方が、互いに反対方向（
遮断方向）に移動するものである。That is, with the opening operation of the operating rod 13, both the first movable electrode 3 and the second movable electrode 23 move in opposite directions (
It moves in the blocking direction).
また、投入動作は、操作ロッド１３を前述した遮断動作
と逆方向に駆動することで同様に行われる。即ち、第７
図の遮断完了状態において、操作ロッド１３を所定の速
度で図中左方向へ移動すると、これに固定された第１可
動電極３が第２可動電極２３との接触方向である図中左
方向へ移動する一方、第１の連結棒１８ｂを介してリン
ク１８ａが時計方向に回動する。これにより、第２の連
結棒１８ｃが図中右方向に移動し、絶縁ロッド２９及び
第２可動電極２３が第１可動電極３との接触方向である
図中右方向へ移動し、投入状態となる。Further, the closing operation is similarly performed by driving the operating rod 13 in the opposite direction to the above-described closing operation. That is, the seventh
When the operating rod 13 is moved to the left in the figure at a predetermined speed in the state where the disconnection is completed in the figure, the first movable electrode 3 fixed thereto moves to the left in the figure, which is the direction of contact with the second movable electrode 23. While moving, the link 18a rotates clockwise via the first connecting rod 18b. As a result, the second connecting rod 18c moves to the right in the figure, and the insulating rod 29 and the second movable electrode 23 move to the right in the figure, which is the direction of contact with the first movable electrode 3. Become.
（発明が解決しようとする課題）
ところで、上述した様な第２可動電極を第１可動電極と
反対方向に駆動させる高電圧遮断器においては、第２可
動電極は第１可動電極側の駆動装置によって駆動される
。そのため、第２可動電極を駆動する複数本の絶縁ロッ
ド２９の長さが不均一であったり、取付は位置がずれた
場合等には、第２可動電極に加わる力がアンバランスな
ものとなり、第２可動電極に回転力等の不要な力が加わ
ることになる。その結果、第２可動電極が正常に開閉動
作を行うことができず、遮断器の開閉性能が低下する恐
れがあった。(Problems to be Solved by the Invention) By the way, in the high voltage circuit breaker which drives the second movable electrode in the opposite direction to the first movable electrode as described above, the second movable electrode is driven by the drive device on the first movable electrode side. driven by. Therefore, if the lengths of the plurality of insulating rods 29 that drive the second movable electrode are uneven, or if the mounting position is shifted, the force applied to the second movable electrode will become unbalanced. Unnecessary force such as rotational force will be applied to the second movable electrode. As a result, the second movable electrode could not normally perform the opening/closing operation, and there was a possibility that the opening/closing performance of the circuit breaker would deteriorate.
本発明は、上述した様な従来技術の問題点を解決するた
めに提案されたもので、その目的は、第２可動電極を安
定した状態に支持し、その開閉動作を精度良く行うこと
ができるバッファ形ガス遮断器を提供することにある。The present invention was proposed in order to solve the problems of the prior art as described above, and its purpose is to support the second movable electrode in a stable state so that its opening and closing operations can be performed with high precision. An object of the present invention is to provide a buffer type gas circuit breaker.
［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、第１及び第２可動電
極を互いに反対方向に駆動する絶縁ロッドと連結され、
且つ第２可動電極を備えたフランジに、前記第２可動電
極と電気的に接続され、固定部に支持された通電用導体
が挿入される貫通孔を形成し、この貫通孔内にリングを
取付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 is connected to an insulating rod that drives the first and second movable electrodes in mutually opposite directions,
Further, a through hole is formed in the flange provided with the second movable electrode, into which a current-carrying conductor that is electrically connected to the second movable electrode and supported by the fixed part is inserted, and a ring is installed in the through hole. It is characterized by:
（作用）
本発明のバッファ形ガス遮断器によれば、第１及び第２
可動電極を互いに反対方向に駆動する絶縁ロッドが、固
定部に支持された通電用導体の第２可動電極側に形成さ
れたフランジに形成された貫通孔内に挿通されて支持さ
れながら開閉動作を行い、さらに、第２可動アーク電極
を備えたフランジが、それに形成された貫通孔内に押入
された通電用導体に支持されながら移動するため、第２
可動電極の開閉動作が安定化する。(Function) According to the buffer type gas circuit breaker of the present invention, the first and second
An insulating rod that drives the movable electrodes in opposite directions is inserted into a through hole formed in a flange formed on the second movable electrode side of the current-carrying conductor supported by the fixed part and is supported while performing opening and closing operations. Furthermore, since the flange provided with the second movable arc electrode moves while being supported by the current-carrying conductor pushed into the through hole formed therein, the second movable arc electrode is moved.
The opening/closing operation of the movable electrode is stabilized.
（実施例）
以下、本発明の一実施例を第１図乃至第３図に基づいて
具体的に説明する。また、第４図乃至第７図に示した従
来型と同一の部材は同一の符号を付し、説明は省略する
。(Example) Hereinafter, an example of the present invention will be specifically described based on FIGS. 1 to 3. Further, the same members as those of the conventional type shown in FIGS. 4 to 7 are denoted by the same reference numerals, and explanations thereof will be omitted.
本実施例においては、第１図に示した様に、絶縁ロッド
２９の先端側には通電用導体３１が同軸状に配設され、
図示されていない固定部に支持されている。この通電用
導体３１の駆動装置側（図中右端部）には、フランジ３
２を介して通電部３１ａが設けられ、通電用導体３１と
電気的に接続されている。また、このフランジ３２には
、絶縁ロッド２９に対応した位置に複数個の貫通孔３２
ａが設けられている。一方、絶縁ロッド２９の駆動装置
側とは反対側端部には、金属部２９ａが形成されている
。In this embodiment, as shown in FIG. 1, a current-carrying conductor 31 is disposed coaxially on the tip side of the insulating rod 29.
It is supported by a fixed part (not shown). A flange 3 is attached to the driving device side (right end in the figure) of this current-carrying conductor 31.
A current-carrying portion 31a is provided via 2, and is electrically connected to the current-carrying conductor 31. The flange 32 also has a plurality of through holes 32 at positions corresponding to the insulating rods 29.
A is provided. On the other hand, a metal portion 29a is formed at the end of the insulating rod 29 on the side opposite to the drive device side.
また、前記絶縁ロッド２９の駆動装置と反対側端部の内
側には、フランジ３３を介して第２可動シールド３４が
同軸状に支持され、その外面に前記通電部３１ａが接触
しながら摺動するように構成されている。さらに、第２
可動アーク電極２２が複数本のリブ３５によって前記フ
ランジ３３の中央部に支持されている。また、前記フラ
ンジ３３には、前記通電用導体３１が貫通する貫通孔３
３ａが対応する位置に設けられ、この貫通孔３３ａ内に
はそれぞれリング３６が配設され、前記通電用導体３１
と摺動可能に構成されている。Furthermore, a second movable shield 34 is coaxially supported inside the end of the insulating rod 29 opposite to the driving device via a flange 33, and the current-carrying portion 31a slides in contact with the outer surface of the second movable shield 34. It is configured as follows. Furthermore, the second
The movable arc electrode 22 is supported at the center of the flange 33 by a plurality of ribs 35. Further, the flange 33 has a through hole 3 through which the current-carrying conductor 31 passes.
3a are provided at corresponding positions, and a ring 36 is provided in each of the through holes 33a, and a ring 36 is provided in each of the through holes 33a.
It is configured to be slidable.
なお、前記通電用導体３１は、遮断器の投入時において
、第２可動アーク電極２２のフランジ３３と通電用導体
３１の先端に設けられたフランジ３２とが接触しないよ
うな、また、遮断時において、フランジ３３と通電用導
体３１の支持部（図示せず）とが接触しないような長さ
を有している。The energizing conductor 31 is designed such that the flange 33 of the second movable arc electrode 22 and the flange 32 provided at the tip of the energizing conductor 31 do not come into contact with each other when the circuit breaker is turned on, and when the circuit breaker is shut off. , has a length such that the flange 33 and the support portion (not shown) of the current-carrying conductor 31 do not come into contact with each other.
また、通電用導体３１は、第３図に示した様に、それが
挿入された貫通孔３３ａと、絶縁ロッド２９のフランジ
３３への固定箇所とが一致しない位置に配設されている
。Further, as shown in FIG. 3, the current-carrying conductor 31 is arranged at a position where the through hole 33a into which it is inserted does not coincide with the location where the insulating rod 29 is fixed to the flange 33.
この様な構成を有する本実施例のバッファ形ガス遮断器
においては、第１図に示した様な投入状態において遮断
指令を受は開極動作が始まると、操作ロッド１３が駆動
装置の方向（図中右方向）に移動する。そして、第２図
に示した様に、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１２が操作ロッド
１３と同一方向に移動する。それと共にバッファシリン
ダ１２とバッファピストン１１によって構成されたバッ
ファ室１７を圧縮し始める。一方、操作ロッド１３の移
動に伴って、リンク１８ａが回動し、絶縁ロッド２９が
図中左方向へ移動する。すると絶縁ロッド２９の他端側
に固定されたフランジ３３に取付けられた第２可動シー
ルド３４及び第２可動アーク電極２２も図中左方向に移
動する。このとき、フランジ３３はその貫通孔３３ａ内
に挿入された通電用導体３１によって支持されながら移
動するため、第２可動電極２３の開閉動作が安定したも
のとなる。In the buffer type gas circuit breaker of this embodiment having such a configuration, when a shutoff command is received in the closing state as shown in FIG. (to the right in the figure). As shown in FIG. 2, when the operating rod 13 is operated, the buffer cylinder 12 attached to the operating rod 13 moves in the same direction as the operating rod 13. At the same time, the buffer chamber 17 formed by the buffer cylinder 12 and buffer piston 11 starts to be compressed. On the other hand, as the operating rod 13 moves, the link 18a rotates, and the insulating rod 29 moves to the left in the figure. Then, the second movable shield 34 and the second movable arc electrode 22 attached to the flange 33 fixed to the other end of the insulating rod 29 also move to the left in the figure. At this time, since the flange 33 moves while being supported by the current-carrying conductor 31 inserted into the through hole 33a, the opening/closing operation of the second movable electrode 23 becomes stable.
この様に、本実施例においては、開閉動作の際に、絶縁
ロッド２９は固定部に支持された通電用導体３１のフラ
ンジ３２に設けられた貫通孔３２ａ内を摺動し、また、
第２可動アーク電極２２が配設されたフランジ３３は、
そのフランジ３３に形成された貫通孔３３ａに設けられ
たリング３６と、支持部に固定された通電用導体３１が
摺動するように支持されながら移動するので、第２可動
電極が常に安定した状態に支持され、第２可動電極に加
わる力が不均一なものとなることはなく、第２可動電極
に回転力等の不要な力が加わることもない。In this manner, in this embodiment, during opening and closing operations, the insulating rod 29 slides within the through hole 32a provided in the flange 32 of the current-carrying conductor 31 supported by the fixed part, and
The flange 33 on which the second movable arc electrode 22 is arranged is
Since the ring 36 provided in the through hole 33a formed in the flange 33 and the current-carrying conductor 31 fixed to the support part move while being supported in a sliding manner, the second movable electrode is always in a stable state. Therefore, the force applied to the second movable electrode will not be uneven, and unnecessary forces such as rotational force will not be applied to the second movable electrode.
［発明の効果］
以上述べた様に、本発明によれば、第１及び第２可動電
極を互いに反対方向に駆動する絶縁ロッドと連結され、
且つ第２可動電極を備えたフランジに、前記第２可動電
極と電気的に接続され、固定部に支持された通電用導体
が挿入される貫通孔を形成し、この貫通孔内にリングを
取付けるという簡単な手段によって、第２可動電極を安
定した状態に支持し、その開閉動作を精度良く行うこと
ができるバッファ形ガス遮断器を提供することができる
。[Effects of the Invention] As described above, according to the present invention, the first and second movable electrodes are connected to an insulating rod that drives them in opposite directions,
Further, a through hole is formed in the flange provided with the second movable electrode, into which a current-carrying conductor that is electrically connected to the second movable electrode and supported by the fixed part is inserted, and a ring is installed in this through hole. By this simple means, it is possible to provide a buffer type gas circuit breaker that can stably support the second movable electrode and perform its opening and closing operations with high precision.
第１図は本発明のバッファ形ガス遮断器の一実施例の投
入状態を示す断面図、第２図は遮断動作中を示す断面図
、第３図は第２図のＡ−Ａ矢視図、第４図は従来のバッ
ファ形ガス遮断器の消弧室を収納した遮断器の外形図、
第５図はバッファ形ガス遮断器の消弧室を示す断面図、
第６図はダブルモーション形遮断器の投入状態を示す断
面図、第７図はダブルモーション形遮断器の遮断状態を
示す断面図である。
１・・・ガスタンク、２・・・固定電極、３・・・可動
電極、４・・・絶縁筒、５，６・・・導体、７・・・駆
動装置、８・・・固定アーク電極、９・・・固定通電電
極、１０・・・支持絶！筒、１１・−・バッファピスト
ン、１２・・・バッファシリンダ、１３・・・操作ロッ
ド、１４・・・可動アーク電極、１５・・・絶縁ノズル
、１６・・・アーク、１７・・・バッファ室、１８・・
・リンク装置、１８ａ・・・リンク、１８ｂ・・・第１
の連結棒、１８Ｃ・・・第２の連結棒、１８ｄ・・・リ
ンク支持部、１８ｅ・・・支点、１９・・・絶縁筒、２
０・・・通電円筒、２１・・・通電導体、２１ａ・・・
通電部、２２・・・第２可動アーク電極、２３・・・第
２可動電極、２９・・・絶縁ロッド、２９ａ・・・金属
部、３１・・・通電用導体、３１ａ・・・通電部、３２
・・・フランジ、３２ａ・・・貫通孔、３３・・・フラ
ンジ、３３ａ・・・貫通孔、３４・・・第２可動シール
ド、３５・・・リブ、３６・・・リング。Fig. 1 is a cross-sectional view showing an embodiment of the buffer type gas circuit breaker of the present invention in a closed state, Fig. 2 is a cross-sectional view showing it during a shut-off operation, and Fig. 3 is a view taken along arrow A-A in Fig. 2. , Figure 4 is an outline drawing of a conventional buffer-type gas circuit breaker that houses the arc extinguishing chamber.
Figure 5 is a sectional view showing the arc extinguishing chamber of a buffer type gas circuit breaker;
FIG. 6 is a cross-sectional view showing the double-motion circuit breaker in the closed state, and FIG. 7 is a cross-sectional view showing the double-motion circuit breaker in the closed state. DESCRIPTION OF SYMBOLS 1... Gas tank, 2... Fixed electrode, 3... Movable electrode, 4... Insulating tube, 5, 6... Conductor, 7... Drive device, 8... Fixed arc electrode, 9...Fixed current-carrying electrode, 10...Unsupported! Cylinder, 11... Buffer piston, 12... Buffer cylinder, 13... Operating rod, 14... Movable arc electrode, 15... Insulating nozzle, 16... Arc, 17... Buffer chamber , 18...
- Link device, 18a... Link, 18b... First
connecting rod, 18C... second connecting rod, 18d... link support part, 18e... fulcrum, 19... insulating cylinder, 2
0... Current-carrying cylinder, 21... Current-carrying conductor, 21a...
Current carrying part, 22... Second movable arc electrode, 23... Second movable electrode, 29... Insulating rod, 29a... Metal part, 31... Current carrying conductor, 31a... Current carrying part , 32
...Flange, 32a...Through hole, 33...Flange, 33a...Through hole, 34...Second movable shield, 35...Rib, 36...Ring.
Claims (1)
可動電極を対向して配置し、第１可動電極とバッファシ
リンダとを駆動装置に連結した操作ロッドの一端に固定
し、前記バッファシリンダ内に配設されたバッファピス
トンによりバッファシリンダ内の消弧性ガスを圧縮し、
この圧縮ガスを前記バッファシリンダに固定された絶縁
ノズルより高速ガス流として噴出して、前記対向する電
極間に発生するアークに吹きつけて消弧するバッファ形
ガス遮断器において、 前記第１及び第２可動電極を互いに反対方向に駆動する
絶縁ロッドと連結され、且つ第２可動電極を備えたフラ
ンジに、前記第２可動電極と電気的に接続され、固定部
に支持された通電用導体が挿入される貫通孔が形成され
、この貫通孔内にリングが取付けられていることを特徴
とするバッファ形ガス遮断器。[Scope of Claims] A first and a second movable gas are provided in a container filled with an arc-extinguishing gas.
The movable electrodes are arranged to face each other, the first movable electrode and the buffer cylinder are fixed to one end of an operating rod connected to a drive device, and the buffer piston disposed in the buffer cylinder extinguishes the arc in the buffer cylinder. compress the gas,
In the buffer type gas circuit breaker, the compressed gas is ejected as a high-speed gas flow from an insulating nozzle fixed to the buffer cylinder, and is blown onto an arc generated between the opposing electrodes to extinguish the arc. A current-carrying conductor supported by a fixed part and electrically connected to the second movable electrode is inserted into a flange connected to an insulating rod that drives the two movable electrodes in opposite directions and provided with the second movable electrode. 1. A buffer type gas circuit breaker, characterized in that a through hole is formed, and a ring is installed in the through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17404089A JPH0743987B2 (en) | 1989-07-07 | 1989-07-07 | Puffer type gas circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17404089A JPH0743987B2 (en) | 1989-07-07 | 1989-07-07 | Puffer type gas circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0340324A true JPH0340324A (en) | 1991-02-21 |
| JPH0743987B2 JPH0743987B2 (en) | 1995-05-15 |
Family
ID=15971574
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17404089A Expired - Fee Related JPH0743987B2 (en) | 1989-07-07 | 1989-07-07 | Puffer type gas circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0743987B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3001329A1 (en) * | 2013-01-24 | 2014-07-25 | Alstom Technology Ltd | DOUBLE-MOVING CONTACTS ELECTRICAL EQUIPMENT COMPRISING A TWO-LEVER RETURN APPARATUS |
-
1989
- 1989-07-07 JP JP17404089A patent/JPH0743987B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3001329A1 (en) * | 2013-01-24 | 2014-07-25 | Alstom Technology Ltd | DOUBLE-MOVING CONTACTS ELECTRICAL EQUIPMENT COMPRISING A TWO-LEVER RETURN APPARATUS |
| WO2014114637A1 (en) * | 2013-01-24 | 2014-07-31 | Alstom Technology Ltd | Electrical apparatus with dual movement of contacts comprising a return device with two levers |
| CN104981887A (en) * | 2013-01-24 | 2015-10-14 | 阿尔斯通技术有限公司 | Electrical apparatus with dual movement of contacts comprising a return device with two levers |
| US9543081B2 (en) | 2013-01-24 | 2017-01-10 | Alstom Technology Ltd | Electrical apparatus with dual movement of contacts comprising a return device with two levers |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0743987B2 (en) | 1995-05-15 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |