JPH08222095A - Gas-blast load-break switch - Google Patents

Gas-blast load-break switch

Info

Publication number
JPH08222095A
JPH08222095A JP2904595A JP2904595A JPH08222095A JP H08222095 A JPH08222095 A JP H08222095A JP 2904595 A JP2904595 A JP 2904595A JP 2904595 A JP2904595 A JP 2904595A JP H08222095 A JPH08222095 A JP H08222095A
Authority
JP
Japan
Prior art keywords
movable contact
contact
compression spring
hole
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
Application number
JP2904595A
Other languages
Japanese (ja)
Inventor
Takahiro Shinohara
▲たか▼弘 篠原
Koji Konno
康二 昆野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fuji Electric Co Ltd
Original Assignee
Fuji Electric Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fuji Electric Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP2904595A priority Critical patent/JPH08222095A/en
Publication of JPH08222095A publication Critical patent/JPH08222095A/en
Pending legal-status Critical Current

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  • Circuit Breakers (AREA)
  • Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)

Abstract

PURPOSE: To enhance the pressure rise in an arc extinguishing chamber to increase the interrupting power by setting the force accumulating and releasing period of a compression spring having one end fixed and the other end connected to a main spindle or a rotating shaft synchronized with the main spindle. CONSTITUTION: A main spindle 14 to which a movable contact 4 is connected is rotated by a driving device 18 through couplings 46, 47. The other end part 24 of a compression spring 19 on end 23 of which is fixed is connected to a lever 20 integrally formed on the outer circumferential part of the coupling 46 through a pin. At the opening operation of the contact 4, the force of the spring 19 is accumulated before an arc extinguishing hole is drawn out from a nozzle hole, whereby the output energy of the device 18 is partially consumed, and the moving speed of the contact 4 is minimized. Thus, the gas in the arc extinguishing chamber is sufficiently heated to enhance the pressure rise. On the other hand, the accumulated force of the spring 19 is released when the arc extinguishing hole is drawn out from the nozzle hole, whereby the moving speed of the contact is sharply increase to surely interrupt the current.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】この発明はSF6 ガスが充填され
たガス絶縁開閉装置に用いられる断路器などのガス開閉
器に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gas switch such as a disconnect switch used in a gas insulated switchgear filled with SF 6 gas.

【0002】[0002]

【従来の技術】ガス開閉器は遮断器と異なり、要求され
る遮断容量が例えば数千ボルト数百アンペアであるため
に種々の消弧方式が考案されている。図3は、従来のガ
ス開閉器の構成を示す要部断面図であり、閉成の状態が
示されている。固定コンタクト1が台座2にリング状の
ばね3で固定されている。この台座2は、絶縁ノズル5
を支持するとともに軸中心に凹部16を備えている。固
定コンタクト1は円周方向に複数に分割されたものによ
り構成され、ばね3によって円柱棒状の可動コンタクト
4を半径方向内方に押し付け、固定コンタクト1が可動
コンタクト4の外周面と摺動可能に接触している。可動
コンタクト4は絶縁ノズル5の軸中心に明けられたノズ
ル穴5Aと凹部16に嵌挿され、さらに、可動コンタク
ト4には、その先端部から軸方向に伸びる穴12Aとこ
の穴12Aに連通し軸と直角な方向に伸びて可動コンタ
クト4の外周へ抜ける穴12Bとによりなる消弧穴12
が形成されている。また、可動コンタクト4は、支持体
7を貫通し、スライドリング6を介して軸方向可動に支
持されている。通電コンタクト8は可動コンタクト4の
外周に接触するとともに、支持体7にばね9で固定さ
れ、シールド10も支持体7に固定されている。通電コ
ンタクト8は、固定コンタクト1と同様なものであり、
円周方向に複数に分割されている。ガス開閉器全体は、
図示されていないタンク内に収納され、消弧性のガス中
に配されている。
2. Description of the Related Art Unlike a circuit breaker, a gas switch has a variety of arc-extinguishing schemes because the required breaking capacity is, for example, thousands of volts and hundreds of amps. FIG. 3 is a cross-sectional view of an essential part showing a configuration of a conventional gas switch, and shows a closed state. The fixed contact 1 is fixed to the base 2 by a ring-shaped spring 3. This base 2 is an insulating nozzle 5
And a recess 16 is provided at the center of the shaft. The fixed contact 1 is composed of a plurality of pieces divided in the circumferential direction, and the columnar rod-shaped movable contact 4 is pressed radially inward by the spring 3 so that the fixed contact 1 can slide on the outer peripheral surface of the movable contact 4. Are in contact. The movable contact 4 is fitted and inserted into a nozzle hole 5A opened in the axial center of the insulating nozzle 5 and a concave portion 16. Further, the movable contact 4 communicates with a hole 12A extending axially from its tip and this hole 12A. Arc-extinguishing hole 12 consisting of a hole 12B extending in the direction perpendicular to the axis and extending to the outer periphery of the movable contact 4.
Are formed. Further, the movable contact 4 penetrates through the support 7 and is movably supported in the axial direction via the slide ring 6. The energizing contact 8 is in contact with the outer periphery of the movable contact 4, is fixed to the support 7 by a spring 9, and the shield 10 is also fixed to the support 7. The energizing contact 8 is similar to the fixed contact 1,
It is divided into a plurality in the circumferential direction. The entire gas switch is
It is housed in a tank (not shown) and placed in arc-extinguishing gas.

【0003】図3において、支持体7は可動コンタクト
4を軸方向にガイドし、シールド10は通電コンタクト
8周辺の電界を緩和させている。通電は通電コンタクト
8から可動コンタクト4を介して固定コンタクト1へと
行われている。可動コンタクト1は、図3の下方に設け
られている図示されていない駆動機構に連結され、開極
するときは矢印11の方向に駆動される。
In FIG. 3, the support 7 guides the movable contact 4 in the axial direction, and the shield 10 relaxes the electric field around the energizing contact 8. Power is supplied from the power contact 8 to the fixed contact 1 via the movable contact 4. The movable contact 1 is connected to a drive mechanism (not shown) provided in the lower part of FIG. 3, and is driven in the direction of arrow 11 when the contact is opened.

【0004】図4は、図3の装置が開極する途中の状態
を示す要部断面図である。可動コンタクト4が下方に移
動すると、凹部16と絶縁ノズル5と可動コンタクト4
の先端面とで形成される空間が増し、これが消弧室17
となる。可動コンタクト4と固定コンタクト1とが開離
するときに両者間にアーク13が生ずるので、耐アーク
性の金属が可動コンタクト4の4A部、固定コンタクト
1の1A部にそれぞれ設けられている。
FIG. 4 is a cross-sectional view of essential parts showing a state in which the device of FIG. 3 is in the process of opening the contacts. When the movable contact 4 moves downward, the recess 16, the insulating nozzle 5 and the movable contact 4 are moved.
The space formed with the tip surface of the
Becomes Since an arc 13 is generated between the movable contact 4 and the fixed contact 1 when the movable contact 4 and the fixed contact 1 are separated from each other, arc-resistant metal is provided at the 4A portion of the movable contact 4 and the 1A portion of the fixed contact 1, respectively.

【0005】図4において、消弧室17内は封じ込まれ
ている。可動コンタクト4が矢印11の方向に向けてさ
らに開極駆動し始めると、可動コンタクト4と固定コン
タクト1との間のアーク13が成長し、そのアーク熱に
よって消弧室17の内圧が上昇する。図5は、図4の状
態よりさらに開極が進んだ状態を示す要部断面図であ
る。穴12Bがノズル穴5Aから抜け出る位置に達する
と、穴12Bから消弧室17の高圧ガス吹き出す。この
ガス吹き出しによって、アーク13が図5のように消弧
穴12内に引き込まれるのでアーク13が冷却され電流
遮断が行われる。ガス開閉器が開極完了した状態は、可
動コンタクト4がノズル穴5Aから抜け出し、可動コン
タクト4の先端がシールド10の開口部附近の位置(点
線4B)に来るまで駆動されて開極動作が完了する。な
お、穴12Bは必ずしも軸に直角に明けられていなくて
もよく、消弧穴12は可動コンタクト4の先端から可動
コンタクト4の外周へ抜けていればよい。
In FIG. 4, the interior of the arc extinguishing chamber 17 is sealed. When the movable contact 4 further starts the opening drive in the direction of the arrow 11, the arc 13 between the movable contact 4 and the fixed contact 1 grows, and the arc heat increases the internal pressure of the arc extinguishing chamber 17. FIG. 5 is a cross-sectional view of an essential part showing a state in which the contact opening is further advanced than the state of FIG. When the hole 12B reaches the position where it exits from the nozzle hole 5A, the high pressure gas in the arc extinguishing chamber 17 is blown out from the hole 12B. By this gas blowing, the arc 13 is drawn into the arc extinguishing hole 12 as shown in FIG. 5, so that the arc 13 is cooled and the current is cut off. In the state where the gas switch is completely opened, the movable contact 4 is driven out of the nozzle hole 5A and is driven until the tip of the movable contact 4 reaches the position (dotted line 4B) near the opening of the shield 10 to complete the opening operation. To do. The hole 12B does not necessarily have to be formed at a right angle to the axis, and the arc extinguishing hole 12 only needs to extend from the tip of the movable contact 4 to the outer periphery of the movable contact 4.

【0006】図6は、図3の装置における駆動側の構成
を示す要部斜視図である。三相三本の可動コンタクト4
が絶縁ノズル5とシールド10を貫通するとともに、そ
れぞれレバー13に連結されている。主軸14は、レバ
ー13と一体に形成されるとともに、密閉容器15を気
密に、かつ回動自由に貫通し、密閉容器15の外部でカ
ップリング36と一体に形成されている。さらに、カッ
プリング36は、嵌合相手のカップリング37を介して
駆動装置に連結されている。
FIG. 6 is a perspective view of an essential part showing the structure of the driving side of the apparatus shown in FIG. Three-phase three-piece movable contact 4
Penetrates the insulating nozzle 5 and the shield 10 and is connected to the lever 13. The main shaft 14 is formed integrally with the lever 13, penetrates the airtight container 15 in an airtight manner, and is freely rotatable, and is integrally formed with the coupling 36 outside the airtight container 15. Further, the coupling 36 is connected to the drive device via a coupling 37 which is a mating partner.

【0007】図6は、カップリング36,37は、互い
に嵌合し合うように端面が段状に形成されている。カッ
プリング37の回動動作はカップリング36に伝えら
れ、主軸14を回動させる。カップリング37は、駆動
装置18側に引かれることによりカップリング36から
外れ、回動動作の伝達を停止させることができる。レバ
ー13は、主軸14の回動動作を可動コンタクト4の軸
方向運動に変換するものである。図6の装置を開極させ
るためには、駆動装置18をX方向に回動させる。この
回動によって、主軸14もX方向に回動するので、可動
コンタクト14が矢印11方向へ駆動される。これによ
って、絶縁ノズル5から可動コンタクト4が抜け出し装
置が開極する。図6の装置を閉極させるためには、駆動
装置18を反X方向に回動させることによって可動コン
タクト4を絶縁ノズル5内に貫入させる。
In FIG. 6, the couplings 36 and 37 have stepped end faces so that they can be fitted together. The rotational movement of the coupling 37 is transmitted to the coupling 36 and rotates the main shaft 14. The coupling 37 can be disengaged from the coupling 36 by being pulled toward the drive device 18, and the transmission of the rotational movement can be stopped. The lever 13 converts the rotational movement of the main shaft 14 into the axial movement of the movable contact 4. To open the device of FIG. 6, the drive device 18 is rotated in the X direction. By this rotation, the main shaft 14 also rotates in the X direction, so that the movable contact 14 is driven in the arrow 11 direction. As a result, the movable contact 4 is pulled out from the insulating nozzle 5 and the device is opened. In order to close the device of FIG. 6, the drive device 18 is rotated in the opposite X direction so that the movable contact 4 penetrates into the insulating nozzle 5.

【0008】[0008]

【発明が解決しようとする課題】しかしながら、前述し
たような従来の装置は、消弧穴の介在によってアークを
効果的に冷却させているが、消弧室内の圧力上昇が小さ
く遮断電流の大きさに制限があるという問題があった。
すなわち、従来の装置は、電流遮断後にアークが再点弧
するのを防ぐために、可動コンタクトの開極動作(軸方
向運動)を高速で行う必要があった。一方、開極動作を
あまり高速で行うと、図4から図5の状態に到るまでの
間が短くなり消弧室17内のガスをアーク13で加熱す
るために必要な時間が充分に確保できないという問題が
あった。そのために、消弧室17内のガス圧上昇は僅か
しか期待できず、図5において消弧穴12がノズル穴5
Aから抜けた後にアーク13を吹き消す力が減少してし
まっていた。したがって、遮断できる電流の大きさに限
界があった。
However, although the conventional device as described above effectively cools the arc by interposing the arc extinguishing hole, the pressure rise in the arc extinguishing chamber is small and the magnitude of the breaking current is large. There was a problem that there was a limit.
That is, in the conventional device, in order to prevent the arc from being re-ignited after the current is cut off, it is necessary to perform the contact opening operation (axial movement) of the movable contact at a high speed. On the other hand, if the opening operation is performed too fast, the time from the state of FIG. 4 to the state of FIG. 5 is shortened, and the time necessary for heating the gas in the arc extinguishing chamber 17 by the arc 13 is secured sufficiently. There was a problem that I could not. Therefore, a slight increase in the gas pressure in the arc-extinguishing chamber 17 can be expected, and in FIG.
After exiting from A, the ability to blow out the arc 13 was reduced. Therefore, there is a limit to the amount of current that can be interrupted.

【0009】この発明の目的は、開極初期に於ける消弧
室内の圧力上昇を大きくすることにある。
An object of the present invention is to increase the pressure increase in the arc extinguishing chamber at the initial stage of opening.

【0010】[0010]

【課題を解決するための手段】上記目的を達成するため
に、この発明によれば、消弧ガスを充填した密閉容器内
に棒状の可動コンタクトと、この可動コンタクトの外周
面に接離可能な固定コンタクトと、可動コンタクトと固
定コンタクトとの接離部を包囲して内部に消弧室を形成
する絶縁ノズルと、可動コンタクトに連結され、回動す
ることにより可動コンタクトを直線動作させる主軸と、
この主軸を回動させる駆動装置とにより構成され、絶縁
ノズルは消弧室の内部から外部へ抜けるノズル穴を備
え、可動コンタクトはノズル穴の内周面と摺動しながら
貫通するとともに、固定コンタクト側の先端から可動コ
ンタクトの外周に抜ける消弧穴を備えたガス開閉器にお
いて、圧縮ばねの一方端が固定され、他方端が主軸の外
周部または主軸と同期して回動する回動体の外周部に連
結され、可動コンタクトの開極動作時に消弧穴がノズル
穴から抜け出す前は圧縮ばねが蓄勢され、消弧穴がノズ
ル穴から抜け出たときに圧縮ばねの蓄勢が解放されてな
るものとするとよい。
In order to achieve the above object, according to the present invention, a rod-shaped movable contact can be contacted with and separated from an outer peripheral surface of the movable contact in an airtight container filled with an arc extinguishing gas. A fixed contact, an insulating nozzle that surrounds a contact / separation portion between the movable contact and the fixed contact to form an arc extinguishing chamber therein, and a spindle that is connected to the movable contact and linearly moves the movable contact by rotating.
The insulating nozzle is provided with a nozzle hole that goes out from the inside of the arc-extinguishing chamber, and the movable contact slides through the inner peripheral surface of the nozzle hole while penetrating the fixed contact. In a gas switch equipped with an arc extinguishing hole that extends from the end on the side to the outer periphery of the movable contact, one end of the compression spring is fixed and the other end is the outer periphery of the main shaft or the outer periphery of the rotating body that rotates in synchronization with the main shaft. The compression spring is stored before the arc extinguishing hole comes out of the nozzle hole when the movable contact is opened, and the compression spring is released when the arc extinguishing hole comes out of the nozzle hole. Good thing.

【0011】[0011]

【作用】この発明の構成によれば、圧縮ばねの一方端が
固定され、他方端が主軸の外周部または主軸に同期して
回動する回動体の外周部に連結される。可動コンタクト
の開極動作時に、消弧穴がノズル穴から抜け出す前は圧
縮ばねが蓄勢されるようにすることにより、駆動装置の
出力エネルギーの一部が圧縮ばねのエネルギー蓄勢に用
いられるので、可動コンタクトの移動速度が小さくな
る。そのために、消弧室内のガスがアークで加熱される
時間を充分に確保することができ、消弧室内の圧力上昇
が非常に大きくなる。一方、消弧穴がノズル穴から抜け
出たときに圧縮ばねの蓄勢が解放されるようにすること
により、駆動装置の出力エネルギーに圧縮ばねの付勢エ
ネルギーが加わるので、可動コンタクトの移動速度が急
に大きくなる。そのために、アークが吹き消された後に
再点弧することはなく、確実に電流が遮断される。
According to the structure of the present invention, one end of the compression spring is fixed, and the other end is connected to the outer peripheral portion of the main shaft or the outer peripheral portion of the rotating body that rotates in synchronization with the main shaft. During the opening operation of the movable contact, the compression spring stores energy before the arc extinguishing hole comes out of the nozzle hole, so that a part of the output energy of the drive device is used for energy storage of the compression spring. , The moving speed of the movable contact decreases. Therefore, it is possible to secure a sufficient time for the gas in the arc extinguishing chamber to be heated by the arc, and the pressure rise in the arc extinguishing chamber becomes very large. On the other hand, the energy stored in the compression spring is released when the arc-extinguishing hole comes out of the nozzle hole, so that the urging energy of the compression spring is added to the output energy of the drive device. Grows suddenly. Therefore, the arc is not blown again and then is not re-ignited, and the current is reliably cut off.

【0012】[0012]

【実施例】以下、この発明を実施例に基づいて説明す
る。図1はこの発明の実施例にかかるガス開閉器の構成
を示す要部斜視図である。カップリング46の外周部に
レバー20が一体に形成されている。このレバー20に
圧縮ばね19の端部24が連結され、圧縮ばね19のも
う一方の端部23は固定されている。その他は、図6の
従来の構成と同じであり、同じものは同一参照符号を付
けることにより詳細な説明を繰り返すことは省略する。
EXAMPLES The present invention will be described below based on examples. FIG. 1 is a perspective view of an essential part showing a configuration of a gas switch according to an embodiment of the present invention. The lever 20 is integrally formed on the outer peripheral portion of the coupling 46. An end 24 of the compression spring 19 is connected to the lever 20, and the other end 23 of the compression spring 19 is fixed. Others are the same as those of the conventional configuration of FIG. 6, and the same components are denoted by the same reference numerals, and the detailed description thereof will not be repeated.

【0013】図1において、開極時に駆動装置18をX
方向に回動させると、レバー20に連動して圧縮ばね1
9が圧縮される。図2は、図1の圧縮ばねの圧縮状態を
示す側面図であり、それぞれ(A)は可動コンタクトが
投入位置にある場合(B)は装置の開極が進み、可動コ
ンタクトの消弧穴がノズル穴が抜け出たときの位置にあ
る場合、(C)は可動コンタクトが遮断完了した位置に
来た場合の図である。
In FIG. 1, the drive device 18 is moved to the X position when the contact is opened.
When rotated in the direction, the compression spring 1 interlocks with the lever 20.
9 is compressed. FIG. 2 is a side view showing the compressed state of the compression spring of FIG. 1. In each case (A), when the movable contact is in the closing position, the contact opening of the device progresses in the case (B) where the arc extinguishing hole of the movable contact is In the case where the nozzle hole is at the position when it comes out, (C) is a diagram when the movable contact comes to the position where the interruption is completed.

【0014】図2(A)において、レバー20は、ピン
21を介して圧縮ばね19の端部24に連結され、圧縮
ばね19のもう一方の端部23は、固定ピン22を介し
て固定されている。カップリング46がX方向に回動す
ると、圧縮ばね19が縮みはじめ、エネルギーが蓄勢さ
れる。図2(B)は、レバー20と圧縮ばね19とが直
線上に配列された状態であり、この状態になるまで圧縮
ばね19にエネルギーが蓄勢される。図2(B)の状態
からカップリング46を更にX方向に回動させると、圧
縮ばね19が伸びはじめ、それまでに蓄勢されていたエ
ネルギーが解放され、図2(C)の状態になる。
In FIG. 2A, the lever 20 is connected to the end 24 of the compression spring 19 via a pin 21, and the other end 23 of the compression spring 19 is fixed via a fixing pin 22. ing. When the coupling 46 rotates in the X direction, the compression spring 19 begins to contract and energy is stored. FIG. 2B shows a state in which the lever 20 and the compression spring 19 are arranged on a straight line, and energy is stored in the compression spring 19 until this state is reached. When the coupling 46 is further rotated in the X direction from the state of FIG. 2B, the compression spring 19 begins to expand, the energy stored up to that point is released, and the state of FIG. 2C is obtained. .

【0015】図2(A)の状態から図2(B)の状態に
なるまでの間は、駆動装置の出力エネルギーの一部が圧
縮ばね19のエネルギー蓄勢に使われるので、カップリ
ング46の回動速度、すなわち、可動コンタクトの移動
速度が小さくなる。そのために、消弧室内のガスがアー
クで加熱される時間が充分にあり、消弧室内の圧力上昇
が非常に大きくなる。一方、図2(B)の状態から図2
(C)の状態になるまでの間は、駆動装置の出力エネル
ギーに圧縮ばね19の付勢エネルギーが加わる。そのた
めに、カップリング46の回動速度、すなわち、可動コ
ンタクトの移動速度が急に大きくなる。したがって、ア
ークが吹き消された後に再点弧することはなく、確実に
電流が遮断される。
From the state of FIG. 2A to the state of FIG. 2B, a part of the output energy of the driving device is used for energy storage of the compression spring 19, so that the coupling 46 of the coupling 46 is operated. The rotation speed, that is, the moving speed of the movable contact becomes small. Therefore, the gas in the arc extinguishing chamber has sufficient time to be heated by the arc, and the pressure rise in the arc extinguishing chamber becomes very large. On the other hand, from the state of FIG.
Until the state of (C) is reached, the energizing energy of the compression spring 19 is added to the output energy of the drive device. Therefore, the rotation speed of the coupling 46, that is, the moving speed of the movable contact suddenly increases. Therefore, the arc is not blown again and the arc is not re-ignited, and the current is reliably cut off.

【0016】例えば、図2(A)の状態におけるカップ
リング46の中心と固定ピン22の中心を結ぶ線26
と、圧縮ばね19の軸線25とのなす角度R1 を5から
10度、図2(C)の状態におけるカップリング46の
中心と固定ピン22との中心を結ぶ線26と、圧縮ばね
19の軸線25とのなす角度R2 を45から60度にす
ると、図2(A)の状態から図2(B)の状態までの間
における可動コンタクトの移動速度は毎秒数cmから数
10cmになる。また、図2(B)の状態から図2
(C)の状態までの間における可動コンタクトの移動速
度は毎秒数mにもなる。
For example, a line 26 connecting the center of the coupling 46 and the center of the fixed pin 22 in the state of FIG.
And an angle R 1 formed by the axis 25 of the compression spring 19 is 5 to 10 degrees, a line 26 connecting the center of the coupling 46 and the center of the fixing pin 22 in the state of FIG. When the angle R 2 formed with the axis 25 is 45 to 60 degrees, the moving speed of the movable contact from the state of FIG. 2A to the state of FIG. 2B is several cm to several tens cm per second. In addition, from the state of FIG.
The moving speed of the movable contact up to the state of (C) is several meters per second.

【0017】なお、図1は圧縮ばね19がカップリング
46の外周面にレバー20を介して連結されていた。カ
ップリング46の代わりに、主軸14の外周面に圧縮ば
ね19を直接連結してもよい。また、主軸14に連動し
て回動する別の軸の外周面に圧縮ばね19を連結しても
よい。要は、主軸14に同期して回動する回動体の外周
面に圧縮ばね19が連結されてあればよい。図1のカッ
プリング46は、上述のような回動体の一例である。
In FIG. 1, the compression spring 19 is connected to the outer peripheral surface of the coupling 46 via the lever 20. Instead of the coupling 46, the compression spring 19 may be directly connected to the outer peripheral surface of the main shaft 14. Further, the compression spring 19 may be connected to the outer peripheral surface of another shaft that rotates in conjunction with the main shaft 14. The point is that the compression spring 19 may be connected to the outer peripheral surface of the rotating body that rotates in synchronization with the main shaft 14. The coupling 46 in FIG. 1 is an example of the rotating body as described above.

【0018】[0018]

【発明の効果】この発明は前述のように、圧縮ばねの一
方端が固定され、他方端が主軸の外周部または主軸に同
期して回動する回動体の外周部に連結される。これによ
り、消弧穴がノズル穴から抜け出す前は、可動コンタク
トの移動速度が小さくなるので消弧室の圧力上昇は非常
に大きくなる。一方、消弧穴がノズル穴から抜け出した
後は、可動速度が急に大きくなるので再点弧することな
く確実に電流遮断される。その結果、装置の遮断電流を
大幅に増大させることができるようになった。
As described above, according to the present invention, one end of the compression spring is fixed and the other end is connected to the outer peripheral portion of the main shaft or the outer peripheral portion of the rotating body which rotates in synchronization with the main shaft. As a result, before the arc extinguishing hole comes out of the nozzle hole, the moving speed of the movable contact decreases, so that the pressure increase in the arc extinguishing chamber becomes very large. On the other hand, after the arc-extinguishing hole comes out of the nozzle hole, the movable speed suddenly increases, so that the current is reliably cut off without re-ignition. As a result, it has become possible to significantly increase the breaking current of the device.

【図面の簡単な説明】[Brief description of drawings]

【図1】この発明の実施例にかかるガス開閉器の構成を
示す要部斜視図
FIG. 1 is a perspective view of a main part showing a configuration of a gas switch according to an embodiment of the present invention.

【図2】図1の圧縮ばねの圧縮状態を示す側面図であ
り、それぞれ(A)は可動コンタクトが投入位置にある
場合(B)は装置の開極が進み、可動コンタクトの消弧
穴がノズル穴が抜け出たときの位置にある場合、(C)
は可動コンタクトが遮断完了した位置に来た場合の図
FIG. 2 is a side view showing a compressed state of the compression spring of FIG. 1, in which (A) shows that when the movable contact is in the closing position, (B) causes the contact opening of the device to proceed, and If the nozzle hole is in the position where it came out, (C)
Is the figure when the movable contact is in the position where the interruption is completed.

【図3】従来のガス開閉器の構成を示す要部断面図FIG. 3 is a cross-sectional view of essential parts showing the configuration of a conventional gas switch.

【図4】図3の構成のものが開極する途中の状態を示す
要部断面図
FIG. 4 is a cross-sectional view of essential parts showing a state in which the structure of FIG. 3 is in the process of opening a contact.

【図5】図4の状態よりさらに開極が進んだ状態を示す
要部断面図
5 is a cross-sectional view of an essential part showing a state where the contact opening is further advanced than the state of FIG.

【図6】図3の装置における駆動側の構成を示す要部斜
視図
6 is a perspective view of a main part showing a configuration on a driving side in the apparatus of FIG.

【符号の説明】[Explanation of symbols]

1:固定コンタクト、2:台座、2A:吸気穴、4:可
動コンタクト、5:絶縁ノズル、5A:ノズル穴、1
2:消弧穴、15:密閉容器、16:凹部、17:消弧
室、18:駆動装置、19:圧縮ばね、13,20:レ
バー、21:ピン、22:固定ピン、23,24:端
部、46,47:カップリング
1: Fixed contact, 2: Pedestal, 2A: Intake hole, 4: Movable contact, 5: Insulation nozzle, 5A: Nozzle hole, 1
2: Arc extinguishing hole, 15: Airtight container, 16: Recess, 17: Arc extinguishing chamber, 18: Driving device, 19: Compression spring, 13, 20: Lever, 21: Pin, 22: Fixing pin, 23, 24: Ends, 46, 47: Coupling

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】消弧ガスを充填した密閉容器内に棒状の可
動コンタクトと、この可動コンタクトの外周面に接離可
能な固定コンタクトと、可動コンタクトと固定コンタク
トとの接離部を包囲して内部に消弧室を形成する絶縁ノ
ズルと、可動コンタクトに連結され、回動することによ
り可動コンタクトを直線動作させる主軸と、この主軸を
回動させる駆動装置とにより構成され、絶縁ノズルは消
弧室の内部から外部へ抜けるノズル穴を備え、可動コン
タクトはノズル穴の内周面と摺動しながら貫通するとと
もに、固定コンタクト側の先端から可動コンタクトの外
周に抜ける消弧穴を備えたガス開閉器において、圧縮ば
ねの一方端が固定され、他方端が主軸の外周部または主
軸と同期して回動する回動体の外周部に連結され、可動
コンタクトの開極動作時に消弧穴がノズル穴から抜け出
す前は圧縮ばねが蓄勢され、消弧穴がノズル穴から抜け
出たときに圧縮ばねの蓄勢が解放されてなることを特徴
とするガス開閉器。
1. A rod-shaped movable contact, a fixed contact that can be brought into contact with and separated from an outer peripheral surface of the movable contact, and a contact / separation portion between the movable contact and the fixed contact are enclosed in a closed container filled with an arc-extinguishing gas. An insulating nozzle that forms an arc extinguishing chamber inside, a main shaft that is connected to the movable contact and linearly moves the movable contact by rotating, and a drive device that rotates the main shaft, and the insulating nozzle extinguishes the arc. Gas opening / closing with a nozzle hole that escapes from inside the chamber to the outside, the movable contact slidingly penetrates the inner peripheral surface of the nozzle hole, and an arc extinguishing hole that extends from the tip of the fixed contact to the outer periphery of the movable contact. In the container, one end of the compression spring is fixed, and the other end is connected to the outer peripheral portion of the main shaft or the outer peripheral portion of the rotating body that rotates in synchronization with the main shaft to open the movable contact. Gas switchgear before Shokoana comes out of the nozzle holes are prestressed compression spring, characterized in that the energy-storing compression spring is to be released when the extinguishing hole has exited from the nozzle hole at the time of work.
JP2904595A 1995-02-17 1995-02-17 Gas-blast load-break switch Pending JPH08222095A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2904595A JPH08222095A (en) 1995-02-17 1995-02-17 Gas-blast load-break switch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2904595A JPH08222095A (en) 1995-02-17 1995-02-17 Gas-blast load-break switch

Publications (1)

Publication Number Publication Date
JPH08222095A true JPH08222095A (en) 1996-08-30

Family

ID=12265429

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2904595A Pending JPH08222095A (en) 1995-02-17 1995-02-17 Gas-blast load-break switch

Country Status (1)

Country Link
JP (1) JPH08222095A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110718412A (en) * 2019-08-29 2020-01-21 常德威迪电气有限责任公司 Strut type circuit breaker with insulating cylinder
CN115410860A (en) * 2022-09-16 2022-11-29 江苏国明浩辰科技有限公司 High-low temperature stable operation control device and 10kv pole-mounted circuit breaker

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110718412A (en) * 2019-08-29 2020-01-21 常德威迪电气有限责任公司 Strut type circuit breaker with insulating cylinder
CN115410860A (en) * 2022-09-16 2022-11-29 江苏国明浩辰科技有限公司 High-low temperature stable operation control device and 10kv pole-mounted circuit breaker

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