JPH03163717A - Buffer type gas circuit breaker - Google Patents
Buffer type gas circuit breakerInfo
- Publication number
- JPH03163717A JPH03163717A JP29969889A JP29969889A JPH03163717A JP H03163717 A JPH03163717 A JP H03163717A JP 29969889 A JP29969889 A JP 29969889A JP 29969889 A JP29969889 A JP 29969889A JP H03163717 A JPH03163717 A JP H03163717A
- Authority
- JP
- Japan
- Prior art keywords
- movable electrode
- circuit breaker
- movable
- electrode
- arc
- 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.)
- Pending
Links
- 239000000872 buffer Substances 0.000 title abstract description 8
- 241000287107 Passer Species 0.000 claims description 8
- 239000004020 conductor Substances 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 244000007853 Sarothamnus scoparius Species 0.000 description 1
- 244000111306 Torreya nucifera Species 0.000 description 1
- 235000006732 Torreya nucifera Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000002699 waste material Substances 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
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
れるパッアァ形ガス遮断器に関するものである．
（従来の技術）
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，かつ高い信頼性が要求され
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、構造を簡単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ｌ点当りの遮断容量を増加させることが必要
である．
従来の一般的パッアァ形遮断器において、遮断性能を高
めるためにはパッアァ室のガス圧力を高めることが必要
である．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５５０ｋＶ
− 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．
この様に遮断容量を向上させるため、従来１６８ｋＶ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
スを吹付け消弧する、いわゆるパッアァ形ガス遮断器で
ある。これは，遮断部の構造が簡単なうえに、封入され
たＳＦ，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ＳＦ，ガスで絶縁
する密閉形ガス開閉所においては、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．第４
図および第５図に従来から用いられているパッアァ形ガ
ス遮断器の構造を示す．まず，第４図において，ガスタ
ンク１内に固定電極２と可動電極３とを対向して設け，
これら固定電極２と可動電極３の外側を包囲するように
絶縁筒４が設けられている。固定電極２と可動電極３に
は、それぞれ導体５，６が接続され，さらに可動電極３
には、その駆動装置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５１０’を介し
て取付けられている。[Detailed Description of the Invention] [Object of the Invention] (Field of Industrial Application) The present invention relates to a passer-type gas circuit breaker used in a power system substation or switchyard. (Prior art) As the capacity of power transmission systems increases, the breaking capacity of circuit breakers used in substations and switchyards increases, and high reliability is required. 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. In conventional passer-type circuit breakers, it is necessary to increase the gas pressure in the passer chamber in order to improve the breaking performance. For example, 550kV systems with a breaking current of 63kA are currently in practical use. This 550kV
- A 63 kA class circuit breaker is constructed with four disconnect points, but in order to improve the reliability of the circuit breaker, it is important to reduce the number of disconnect points and the number of parts. In order to improve the breaking capacity in this way, what has been conventionally used in power transmission voltage systems of 168 kV or higher is the so-called Puffer type gas circuit breaker, which extinguishes the arc by spraying gas on it. This has a simple interrupting structure, and has excellent insulation and arc extinguishing performance due to the enclosed SF and gas. In addition, in closed gas switchyards where all substation equipment is insulated with SF or gas, the insulating gas used allows for insulation coordination between circuit breakers and other equipment, and efficiency is also improved from the standpoint of equipment placement. It is very good, so it is often used. Fourth
Figures 5 and 5 show the structure of a conventionally used Puffer type gas circuit breaker. First, in FIG. 4, a fixed electrode 2 and a movable electrode 3 are provided facing each other in a gas tank 1.
An insulating cylinder 4 is provided so as to surround the outside of these fixed electrodes 2 and movable electrodes 3. Conductors 5 and 6 are connected to the fixed electrode 2 and the movable electrode 3, respectively, and the movable electrode 3
The drive device 7 is connected to the . Note that the movable electrode 3 is attached to the gas tank 1 via a supporting insulator 510'.
次にこの様なパッアァ形ガス遮断器の消弧室の詳細を第
５図で説明する。第５図において、固定電極２は、中心
の固定アーク接触子８と、その外側に設けられた円筒状
の固定通電電極９を備えている．一方、可動電極３は、
ガスタンク１側に固定されたパッアァピストン１１と，
このパッアァピストン１ｌの外側を前記駆動装置７とを
連結するためにパッアァピストン１ｌの内部に挿入され
た操作ロッドｌ３とを備えている。更に、前記パッアァ
シリンダ１２の先端部には、固定アーク電極８に接触す
る可動アーク電極（第１可動アーク電極）１４と、それ
を取り囲む絶縁ノズルｌ５とが設けられている．この様
に構威された従来のガス遮断器においては、操作ロッド
１３が駆動装置７によって往復運動すると，可動電極３
はこれと対向する固定電極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（第１可動アーク電極）１４との間にアー
ク１６が発生する．そして，遮断動作によりパッアァシ
リンダ１２が左右方向へ移動し，パッアァシリンダ１２
とパッアァピストンｌ１によって形成されるパッアァ室
ｌ７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により制御されてアーク１６に吹付け
られこれを消弧する．ところで、以上の様なパッアァ形
ガス遮断器において、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，上述の構威にて開極
速度を速くするためには，駆動装置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てコスト高になる
。これに対して，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の移動方向と反対方向に移
動させることにより、相対的な開極速度を速くする方式
のものがある．第６図は，可動電極３（第１可動電極）
に対向配置した第２可動電極２３を可動電極３（第１可
動電極）の移動方向と反対方向に移動する方式のパッア
ァ形ガス遮断器を示している．なお、同図は、投入状態
を示している．同図において、パッアァシリンダ１２の
外周には、パッアァシリンダ１２と一定の間隔を保持し
、複数本の絶縁ロッド２９が配置されている．絶縁ロッ
ド２９は，その駆動装置側の端部にて操作ロッド１３と
の間に設けられたリンク装置ｌ８を介して操作ロッド１
３と連結されている．リンク装置ｌ８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
結捧１８ｂ，１８ｃおよび１８ａを支持するリンク支持
部１８ｄより構成されている．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に対して回動自在に支
持されている．また、第１，第２の各連結捧１８ｄ，
１８ｃは、それぞれ一端にて操作ロッド１３と絶縁ロッ
ド２９に回動自在に連結されている．なお，リンク支持
部１８ｄは図示しない容器に絶縁固定した絶縁筒ｌ９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が取付けられており，この通
電円筒２０が，駆動装置と反対側に支持固定した通電導
体２１の通電部２１ａを摺動自在に動作する．この通電
円筒２０の駆動装置部側軸線上には、第２可動アーク電
極２２が設けられ、可動電極３（第１可動電極）と開閉
動作を行う第２可動電極２３を構威している．なお、第
６図の投入状態において可動電極３（第１可動電極）と
第２可動アーク電極２２とは接触状態にある．
以上のように構成した従来のガス遮断器において、まず
、第６図の投入状態にて図示しない駆動装置を操作する
と、操作ロッド１３が所定の速度で駆動装置方向（図中
右方向）に駆動され，その先端に固定された可動電極３
（第１可動電極）が右方向に移動し，第２可動電極２３
との間で遮断動作が起こる．
一方、この操作ロッド１３の動作に伴って，操作ロッド
ｌ３に連結された第１連結捧１８ｂにも同方向へ力が加
わり、その力が第１連結捧１８ｂと連結しているリンク
１８ａの一端を図中右方向へ移動する様に加わる．この
場合、リンク１８ａの支点１８ｇを固定しているため、
リンク１８ａの一端に加わる前記の力は、リンク１８ａ
の支点Ｌ８ｅを軸として反時計方”向に回転させるモー
メントカとなり、リンク１８ａが同方向に回動する．す
ると、リンク１８ａの他端は、図中左方向に回動するた
め、同部に連結している第２連結捧１８ｃが左方向へ移
動し、これに連結した絶縁ロッド２９の左方向へ移動す
る。従って，絶縁ロッド２９に固定した第２可動電極２
３が左方向へ移動して，可動電極３（第１可動電極）か
ら開離し，第７図に示すような開極状態に移行する。Next, details of the arc extinguishing chamber of such a Puffer type gas circuit breaker will be explained with reference to FIG. In FIG. 5, the fixed electrode 2 includes a fixed arc contact 8 at the center and a cylindrical fixed current-carrying electrode 9 provided on the outside thereof. On the other hand, the movable electrode 3 is
A paaaa piston 11 fixed to the gas tank 1 side,
The operating rod 13 is inserted into the inside of the pass piston 1l to connect the outside of the pass piston 1l with the drive device 7. Furthermore, a movable arc electrode (first movable arc electrode) 14 that contacts the fixed arc electrode 8 and an insulating nozzle l5 surrounding the movable arc electrode 14 are provided at the tip of the pass cylinder 12. In the conventional gas circuit breaker configured in this manner, when the operating rod 13 is reciprocated by the drive device 7, the movable electrode 3
performs opening and closing operations between this and the opposing fixed electrode 2,
Cut off the current. Here, FIG. 5 shows a state in which the interrupting operation is in progress, and in this state, an arc 16 is generated between the fixed arc electrode 8 and the movable arc electrode (first movable arc electrode) 14. Then, due to the shutoff operation, the passer cylinder 12 moves in the left and right direction, and the passer cylinder 12 moves to the left and right.
When the arc-extinguishing gas is compressed in the blower chamber l7 formed by the blower piston l1, this arc-extinguishing gas flow is controlled by the insulating nozzle 15 and sprayed onto the arc 16 to extinguish it. By the way, in order to improve the arc extinguishing performance of the above-mentioned pass-type gas circuit breakers,
It is necessary to increase the opening speed, but in order to increase the opening speed with the above structure, the driving force of the drive device must be increased, which increases the size of the entire device and increases the cost. . On the other hand, without changing the driving force of the drive device,
There is a method 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. Figure 6 shows movable electrode 3 (first movable electrode)
This figure shows a Puffer-type gas circuit breaker in which the second movable electrode 23, which is disposed opposite to the movable electrode 23, is moved in the opposite direction to the moving direction of the movable electrode 3 (first movable electrode). The figure shows the loaded state. In the figure, a plurality of insulating rods 29 are arranged around the outer periphery of the passer cylinder 12 at a constant distance from the passer cylinder 12. The insulating rod 29 is connected to the operating rod 1 via a link device l8 provided between the insulating rod 29 and the operating rod 13 at its end on the driving device side.
It is connected to 3. The link device l8 is a link 18a.
The link support portion 18d supports first and second connecting rods 18b, 18c and 18a which are rotatably connected to both ends of the link. The link 18a is a fulcrum 18e of a link support portion 18d set to a predetermined link ratio.
It is rotatably supported on the link support part 18d about the axis. In addition, each of the first and second connecting shafts 18d,
18c is rotatably connected to the operating rod 13 and the insulating rod 29 at one end, respectively. Note that the link support portion 18d is fixed to an insulating tube l9 that is insulated and fixed to a container (not shown). On the other hand, at the end of the insulating rod 29 opposite to the drive device,
A current-carrying cylinder 20 is attached coaxially with this, and this current-carrying cylinder 20 slidably operates on a current-carrying portion 21a of a current-carrying conductor 21 supported and fixed on the side opposite to the drive device. A second movable arc electrode 22 is provided on the axis of the current-carrying cylinder 20 on the drive unit side, and constitutes a second movable electrode 23 that opens and closes with the movable electrode 3 (first movable electrode). In addition, in the closed state shown in FIG. 6, the movable electrode 3 (first movable electrode) and the second movable arc electrode 22 are in contact. In the conventional gas circuit breaker configured as described above, when the drive device (not shown) is operated in the closed state shown in FIG. 6, the operating rod 13 is driven at a predetermined speed toward the drive device (to the right in the figure). A movable electrode 3 is fixed to the tip of the movable electrode 3.
(the first movable electrode) moves to the right, and the second movable electrode 23
A blocking action occurs between the On the other hand, as the operating rod 13 moves, a force is applied in the same direction to the first connecting rod 18b connected to the operating rod l3, and the force is applied to one end of the link 18a connected to the first connecting rod 18b. is added so as to move it to the right in the figure. In this case, since the fulcrum 18g of the link 18a is fixed,
The force applied to one end of the link 18a is
The moment force causes the link 18a to rotate in the counterclockwise direction about the fulcrum L8e, and the link 18a rotates in the same direction.Then, the other end of the link 18a rotates to the left in the figure, so the link 18a rotates in the same direction. The connected second connecting rod 18c moves to the left, and the insulating rod 29 connected thereto moves to the left.Therefore, the second movable electrode 2 fixed to the insulating rod 29 moves to the left.
3 moves to the left and separates from the movable electrode 3 (first movable electrode), transitioning to an open state as shown in FIG.
すなわち、操作ロッド１３の動作に従って、可動電極３
（第１可動電極）および第２可動電極２３の両方がそれ
ぞれ遮断動作方向に移動するものである。また，遮断動
作は、操作ロッドｌ３を上述のような遮断動作と逆方向
に駆動することで同様に行われる．すなわち、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
左方向へ移動すると、これに固定された可動電極３（第
１可動電極）が第２可動電極２３との接触方向である左
方向へ移動する一方、第１連結捧１８ｄを介してリンク
１８ａが時計方向に回転する．これにより、第２連結捧
１８ｃが右方向に移動し、絶縁ロッド２９および第２可
動電極２３が可動電極３（第１可動電極）との接触方向
である右方向へ移動する．
（発明が解決しようとする課題）
ところで，上述の様な第２可動電極を動作させる高電圧
遮断器において、第２可動電極２３は第１可動電極３側
から駆動される．そのため，駆動する絶縁棒２９の取付
けられた状態により第２可動電極２３に加わる力がアン
バランスとなり、第２可動電極２３に回転力などの不要
な力が加わるため正常な動作ができなくなって遮断器の
開閉性能が低下する恐れがある。そのため，この問題を
解決する必要があった．
本発明の目的は、摺動する第２可動電極を安定に支持し
、第２可動電極が不要な力により回転しないようにする
とともに、開閉動作において無駄な動作がなくなるよう
にしたパッアァ形ガス遮断器を提供することにある。That is, according to the operation of the operating rod 13, the movable electrode 3
(first movable electrode) and second movable electrode 23 each move in the blocking operation direction. Further, the shutoff operation is similarly performed by driving the operating rod l3 in the opposite direction to the above-described shutoff operation. That is, when the operating rod 13 is moved to the left at a predetermined speed in the state where the interruption is completed as shown in FIG. While moving to a certain left direction, the link 18a rotates clockwise via the first connecting piece 18d. As a result, the second connecting rod 18c moves to the right, and the insulating rod 29 and the second movable electrode 23 move to the right, which is the direction of contact with the movable electrode 3 (first movable electrode). (Problem to be Solved by the Invention) By the way, in the high voltage circuit breaker that operates the second movable electrode as described above, the second movable electrode 23 is driven from the first movable electrode 3 side. Therefore, due to the attached state of the driving insulating rod 29, the force applied to the second movable electrode 23 becomes unbalanced, and unnecessary force such as rotational force is applied to the second movable electrode 23, making it impossible to operate normally and shutting off. The opening/closing performance of the device may deteriorate. Therefore, it was necessary to solve this problem. An object of the present invention is to provide a pass-through type gas cutoff that stably supports a sliding second movable electrode, prevents the second movable electrode from rotating due to unnecessary force, and eliminates unnecessary operations during opening and closing operations. It is about providing the equipment.
（Ｗ題を解決するための手段）
本発明のパッアァ形ガス遮断器は、消弧性ガ゜スを充填
した容器内に接離自在な第１および第２可動電極を対向
して配置し、その第１可動電極の開閉動作時にその操作
ロッドの動きに関連して消弧性ガスを圧縮・膨張させる
パッアァ機構を備え、そのパッアァ機構で圧縮ガスを第
１および第２可動電極間に発したアークに吹きつけるパ
ッアァ形ガス遮断器において、前記第１可動電極側から
リンク装置を介して第２可動電極を駆動する複数本の絶
縁棒の第１可動電極側に金属製の摺動部を設け、かつ前
記各絶縁棒の金属製摺動部が貫通してこれを摺動支持す
るとともに，前記第１可動電極のパッアァシリンダに接
触摺動して口出導体への通電路を形成する支持部材を前
記第１可動電極側の固定部に設けたとを特徴とするもの
である．（作用）
本発明においては，第２可動電極を駆動する絶縁捧が、
支持部材の摺動部で摺動的に支持されているため、第２
可動電極に加わる力がバランスして回転力を生じること
なく、遮断器の開閉動作が無駄なく実施することができ
る。(Means for Solving Problem W) The Puffer-type gas circuit breaker of the present invention has first and second movable electrodes facing each other that can be moved toward and away from each other in a container filled with arc-extinguishing gas, The first movable electrode is provided with a blow mechanism that compresses and expands the arc-extinguishing gas in relation to the movement of the operating rod during the opening and closing operations of the first movable electrode, and the compressed gas is emitted between the first and second movable electrodes by the blow mechanism. In a blower type gas circuit breaker that blows on an arc, a metal sliding part is provided on the first movable electrode side of the plurality of insulating rods that drive the second movable electrode from the first movable electrode side via a link device. , and a support through which the metal sliding portion of each insulating rod penetrates and slides to support it, and also slides in contact with the passer cylinder of the first movable electrode to form an energizing path to the outlet conductor. The present invention is characterized in that a member is provided on the fixed portion on the first movable electrode side. (Function) In the present invention, the insulating plate that drives the second movable electrode is
Since it is slidably supported by the sliding part of the support member, the second
The forces applied to the movable electrodes are balanced and no rotational force is generated, allowing the circuit breaker to open and close without waste.
（実施例）
以下本発明を第１図，第２図および第３図に示す一実施
例を参照して説明する．第１図および第２図において，
第４図ないし第７図と同一符号は同一部分を示すもので
あるからその説明を省略する．
第ＩＩＩおよび第２図において、本発明のパッアァ形ガ
ス遮断器は，第１可動電極３の操作ロッドｌ３とこの操
作ロッド１３の動きを第２可動電極２３の第２可動アー
ク電極２２および通電円筒２０に伝達する各々の絶縁ロ
ッド２９との間に設けて、リンク装置１８を保持し，か
つ各々の絶縁ロッド２９の動きを案内しながら電気的な
通電路を形或する機能を備えた円筒台状の支持部材２５
を設けたことを特徴としている．
すなわち，支持部材２５は第３図に示すように大体がリ
ンク装置１８を囲む円筒台状に形威され、その一端部は
第１可動電極３側を支持する絶縁筒１９によって支持固
定されており，その他端部には，内側に折り曲がる板状
の摺動部２６を形成し、さらにその摺動部２６の内周端
からパッアァシリンダ１２の外側に沿って延長され、そ
の端部に摺動接触子３０′，を有する通電部３０を形成
している。(Example) The present invention will be explained below with reference to an example shown in FIGS. 1, 2, and 3. In Figures 1 and 2,
The same reference numerals as in FIGS. 4 to 7 indicate the same parts, so the explanation thereof will be omitted. In FIG. A cylindrical stand is provided between each insulating rod 29 and has the function of holding the link device 18 and forming an electrical current path while guiding the movement of each insulating rod 29. supporting member 25
It is characterized by having the following. That is, as shown in FIG. 3, the support member 25 is generally shaped like a cylindrical table surrounding the link device 18, and one end thereof is supported and fixed by an insulating cylinder 19 that supports the first movable electrode 3 side. , a plate-shaped sliding part 26 that is bent inward is formed at the other end, and further extends from the inner circumferential end of the sliding part 26 along the outside of the packer cylinder 12, and a sliding part is formed at the end thereof. A current-carrying section 30 having a moving contact 30' is formed.
そしてその板状の摺動部２６には絶縁ロッド２９の数に
応じた数の案内孔２６′ を設けている．この案内孔２
６′ には、第１図および第２図に示すようにそれぞれ
の絶縁ロッド２９が貫通してその金属部２９ａが絶縁ロ
ッド２９の動きの全行程で常に摺動リング２７が摺動接
触するよう構成されている．したがって、遮断部の通電
経路は、第２可動電極２３一第１可動電極３−パッアァ
シリンダ１２一通電部３０−支持部材２５を経て図示し
ない一方の口出導体へと接続される。The plate-shaped sliding portion 26 is provided with a number of guide holes 26' corresponding to the number of insulating rods 29. This guide hole 2
6', as shown in FIGS. 1 and 2, each of the insulating rods 29 is passed through so that the metal part 29a is always in sliding contact with the sliding ring 27 during the entire movement of the insulating rod 29. It is configured. Therefore, the energization path of the cutoff section is connected to one outlet conductor (not shown) via the second movable electrode 23, first movable electrode 3, pass cylinder 12, energization section 30, and support member 25.
以上の様な構或を有する本発明のパッアァ形ガス遮断器
の動作について説明する。投入状態の第１図において、
遮断指令を受けて開極動作が始まると、操作ロッド１３
が図示していない右側の駆動装置の方向に移動する．第
２図は，開極途中を示す．操作ロッド１３が動作すると
操作ロッド１３に取付けられたパッアァシリンダ１２が
操作ロツドｌ３と同一方向に移動する．
それと共にパッアァシリンダ１２とパッアァピストンｌ
１との間で構成されたパッアァ室ｌ７を圧縮し始める．
パッアァ室ｌ７のガス圧力が上昇し，絶縁ノズル１５と
可動アーク電極ｌ４で囲まれた空間を通って第１可動ア
ーク電極１４と第２可動アーク電極２２との間に生じた
アーク１６に高速流のガスを吹付けて遮断する。The operation of the Puffer type gas circuit breaker of the present invention having the above structure will be explained. In Figure 1 in the loaded state,
When the opening operation begins in response to a cutoff command, the operating rod 13
moves in the direction of the drive device on the right (not shown). Figure 2 shows the opening process. When the operating rod 13 operates, the puller cylinder 12 attached to the operating rod 13 moves in the same direction as the operating rod l3. At the same time, the Paaaa cylinder 12 and the Paaaa piston l
Start compressing the packing chamber l7, which is composed of 1 and 1.
The gas pressure in the blower chamber 17 increases, and a high-speed flow flows through the space surrounded by the insulating nozzle 15 and the movable arc electrode 14 to the arc 16 generated between the first movable arc electrode 14 and the second movable arc electrode 22. Blow the gas to shut it off.
一方，操作ロツドｌ３の移動にともなって，リング１８
ａが移動し，絶縁ロツド２９が図中左方向へ移動する．
駆動装置側と反対側で絶縁ロツド２９に固定された通電
円筒２０に取付けられた第２可動アーク電極２２も図中
左方向に移動する．このとき第３図に拡大して示した絶
縁ロツド２９は、支持部材２５の摺動部２６の摺動リン
グ２７を通して摺動的に支持されており，摺動リング２
７に支持されながら自在に開閉動作する．したがって遮
断器の開閉動作時には，リンク装！！１８が振動するこ
となく、また寸法差などによる回転力も生じない．そし
て電流は、パッアァシリンダ１２の外周に設けた通電部
３０を通゛して電流通路を確保することができる．〔発
明の効果〕
以上に述べたように、本発明によれば、第２可動電極側
が固定部から支持されて摺動するため、第２可動電極を
駆動する絶縁捧の長さなど組み立て誤差によって働く回
転力および、歪み力を防止することが可能である。この
様な構或により、信頼性の高いパッアァ形ガス遮断器を
提供することができる．On the other hand, as the operating rod l3 moves, the ring 18
a moves, and the insulating rod 29 moves to the left in the figure.
The second movable arc electrode 22 attached to the current-carrying cylinder 20 fixed to the insulating rod 29 on the side opposite to the drive device side also moves to the left in the figure. At this time, the insulating rod 29 shown enlarged in FIG. 3 is slidably supported through the sliding ring 27 of the sliding portion 26 of the support member 25.
It opens and closes freely while being supported by 7. Therefore, when opening/closing the circuit breaker, use the link system! ! 18 does not vibrate, and no rotational force is generated due to dimensional differences. The current can pass through the current-carrying portion 30 provided on the outer periphery of the packer cylinder 12 to ensure a current path. [Effects of the Invention] As described above, according to the present invention, since the second movable electrode side is supported from the fixed part and slides, it is possible to prevent assembly errors such as the length of the insulating strip that drives the second movable electrode. It is possible to prevent rotational forces and distortion forces. With such a structure, a highly reliable Puffer type gas circuit breaker can be provided.
第１図は本発明のパッア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図は同じく遮断動作中を示す
断面図，第３図は本発明に使用する支持部材を拡大して
示す断面図，第４図は従来のパッア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図はパッアァ形ガ
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、 ３・・・第１可動電極、
１１・・・パッアァピストン，１２・・・パッアァシリ
ンダ、ｌ３・・・操作ロッド、 １４・・・第１可動
アーク電極、１５・・・絶縁ノズル、 １７・・・
パッアァ室、ｌ８・・・リンク装置、 １８ａ・・
・リンク，１８ｂ・・・第１の連結棒，１８ｃ・・・第
２の連結捧，１８ｄ・・・リンク支持部、 １８ｅ・・
・支点，ｌ９・・・絶縁筒、 ２０・・・通電
円筒、２１・・・通電用導体，２１ａ・・・通電部、２
２・・・第２可動アーク電極、
２３・・・第２可動電極、 ２５・・・支持部材，２
６・・・摺動部、 ２７・・・摺動リング，２
９・・・絶縁ロッド，２９ａ・・・金属部．（８７３３
）代理人弁理士 猪 股 祥 晃（ほか１名）茅
！
図
ギ
２
図
弟
３
圏
等
渠
困
箒
５
粘
序
７
茜Fig. 1 is a cross-sectional view showing an embodiment of the puller-type gas circuit breaker of the present invention in the closing state, Fig. 2 is a cross-sectional view showing the same during the breaking operation, and Fig. 3 is an enlarged view of the support member used in the present invention. 4 is an external view of a circuit breaker housing the arc extinguishing chamber of a conventional PAA type gas circuit breaker, FIG. 5 is a sectional view showing the arc extinguishing chamber of a PAA type gas circuit breaker, and FIG. The figure 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. 1... Gas tank, 3... First movable electrode,
DESCRIPTION OF SYMBOLS 11... Pass piston, 12... Pass cylinder, l3... Operating rod, 14... First movable arc electrode, 15... Insulating nozzle, 17...
Puffer room, l8... link device, 18a...
・Link, 18b...First connecting rod, 18c...Second connecting rod, 18d...Link support part, 18e...
・Fully point, l9... Insulating cylinder, 20... Current-carrying cylinder, 21... Current-carrying conductor, 21a... Current-carrying part, 2
2... Second movable arc electrode, 23... Second movable electrode, 25... Support member, 2
6...Sliding part, 27...Sliding ring, 2
9... Insulating rod, 29a... Metal part. (8733
) Representative Patent Attorney Yoshiaki Inomata (and 1 other person) Kaya! Figure 2 Figure disciple 3 Circle and conduit trouble broom 5 Muko 7 Akane
Claims (1)
２可動電極を対向して配置し、その第１可動電極の開閉
動作時にその操作ロッドの動きに関連して消弧性ガスを
圧縮・膨張させるパッアァ機構を備え、そのパッアァ機
構で圧縮ガスを第１および第２可動電極間に発したアー
クに吹きつけるパッアァ形遮断器において、前記第１可
動電極側からリンク装置を介して第２可動電極を駆動す
る複数本の絶縁棒の第１可動電極側に金属製の摺動部を
設け、かつ前記各絶縁棒の金属製摺動部が貫通してこれ
を摺動支持するとともに、前記第１可動電極のパッアァ
シリンダに接触摺動して口出導体への通電路を形成する
支持部材を前記第１可動電極側の固定部に設けたとを特
徴とするパッアァ形ガス遮断器。First and second movable electrodes that can be moved toward and away from each other are arranged facing each other in a container filled with an arc-extinguishing gas, and when the first movable electrode is opened and closed, the arc-extinguishing gas is released in response to the movement of the operating rod. In the pass-a-type circuit breaker, the pass-a-type circuit breaker is equipped with a pass mechanism that compresses and expands the gas, and the pass mechanism blows compressed gas onto the arc emitted between the first and second movable electrodes. A metal sliding portion is provided on the side of the first movable electrode of a plurality of insulating rods that drive the second movable electrode, and the metal sliding portion of each of the insulating rods penetrates and slides to support this. , a passer type gas circuit breaker, characterized in that a support member that slides in contact with the passer cylinder of the first movable electrode to form an energizing path to the outlet conductor is provided on the fixed part on the first movable electrode side. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29969889A JPH03163717A (en) | 1989-11-20 | 1989-11-20 | Buffer type gas circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29969889A JPH03163717A (en) | 1989-11-20 | 1989-11-20 | Buffer type gas circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH03163717A true JPH03163717A (en) | 1991-07-15 |
Family
ID=17875888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29969889A Pending JPH03163717A (en) | 1989-11-20 | 1989-11-20 | Buffer type gas circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH03163717A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100626818B1 (en) * | 2005-07-12 | 2006-09-20 | 엘에스산전 주식회사 | Gas insulated switchgear |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231920A (en) * | 1985-08-01 | 1987-02-10 | 株式会社東芝 | Buffer type gas breaker |
-
1989
- 1989-11-20 JP JP29969889A patent/JPH03163717A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6231920A (en) * | 1985-08-01 | 1987-02-10 | 株式会社東芝 | Buffer type gas breaker |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100626818B1 (en) * | 2005-07-12 | 2006-09-20 | 엘에스산전 주식회사 | Gas insulated switchgear |
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