JPS5916234A - Breaking chamber for gas breaker - Google Patents

Breaking chamber for gas breaker

Info

Publication number
JPS5916234A
JPS5916234A JP12544782A JP12544782A JPS5916234A JP S5916234 A JPS5916234 A JP S5916234A JP 12544782 A JP12544782 A JP 12544782A JP 12544782 A JP12544782 A JP 12544782A JP S5916234 A JPS5916234 A JP S5916234A
Authority
JP
Japan
Prior art keywords
contact
movable
breaker
fixed contact
movable contact
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
JP12544782A
Other languages
Japanese (ja)
Inventor
永海 捷司
富士 卓司
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
Fuji Electric Corporate Research and Development Ltd
Fuji Electric Manufacturing 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, Fuji Electric Corporate Research and Development Ltd, Fuji Electric Manufacturing Co Ltd filed Critical Fuji Electric Co Ltd
Priority to JP12544782A priority Critical patent/JPS5916234A/en
Priority to EP83730073A priority patent/EP0100749A1/en
Publication of JPS5916234A publication Critical patent/JPS5916234A/en
Pending legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01HELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H33/00High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
    • H01H33/70Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
    • H01H33/7015Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
    • H01H33/7023Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle
    • H01H33/703Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts characterised by an insulating tubular gas flow enhancing nozzle having special gas flow directing elements, e.g. grooves, extensions

Landscapes

  • Circuit Breakers (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。
(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 この発明はカスしゃ断器のしゃ断室に関する。[Detailed description of the invention] The present invention relates to a breaker chamber of a cass breaker.

5F11ガスなどの絶縁性ガスを消弧媒体にするガスし
ゃ断器に多用されるバッファ形のしゃ断室にはたとえば
第1図に示すものが知られ、このしゃ断室は円柱状の固
定接触子1と、固定接触子1と同軸上に対向し摺接可能
に配置された円筒状の可動接触子2と、可動接触子20
反固定接触子側に結合さflた一部しか図示されていな
い管状の通電ロッド3と、後述する消弧装置4とを主構
成要素として備えている。消弧装置4は一部しか図示さ
れていないが通電ロッド3にそれの外周辺と一定の間隔
を保って一体化された可動シリンダ5と。
For example, the buffer-type breaker chamber shown in FIG. 1 is known, which is often used in gas circuit breakers that use insulating gas such as 5F11 gas as an arc-extinguishing medium. , a cylindrical movable contact 2 that coaxially faces the fixed contact 1 and is arranged to be able to slide into contact with the fixed contact 1, and a movable contact 20.
The main components include a tubular current-carrying rod 3, only a portion of which is shown, which is coupled to the side opposite to the fixed contact, and an arc extinguishing device 4, which will be described later. Although only a portion of the arc extinguishing device 4 is shown, a movable cylinder 5 is integrated with the current-carrying rod 3 at a constant distance from its outer periphery.

可動シリンダ5の内壁と通電ロッド3の外周との間に遊
動自在に設けられた通電ロッド3の支持を兼ねるととも
に可動シリンダ5内にバッファ室6を区画する固定ピス
トン7と、可動シリンダ5に固定さ扛可動接触子2をそ
の外周辺と一定の間隔を保って収納し、かつ−側に固定
接触子1が嵌入可能なグラファイトなどにょる耐弧性を
備える吐出口部分8が一体化され他側が可動シリンダ5
の備えるガス吹付孔5a全通してバッファ室6内につな
がる絶縁材料による円筒状のノズル9とにより構成され
ている。この構成においてしゃ断器にしゃ断指令が与え
られると1図示されていない駆動装置によシ通電ロッド
3を介して可動接触子2、可動シリンダ5およびノズル
9はA矢方向に駆動される。可動接触子2が固定接触子
1を離れるとその間にアークが発生し、それと同時に駆
動された可動シリンダ5によシ高められたバッファ室6
内の消弧ガスのガス流1oがアークに向けて吹付けられ
る。その結果図の上半分示すようにアーク11が引き延
ばされることにより冷却され、交流電源の零点が来た時
点で消滅させられしゃ断する。
A fixed piston 7 which is freely movable between the inner wall of the movable cylinder 5 and the outer periphery of the energizing rod 3 and also serves to support the energizing rod 3 and partitions a buffer chamber 6 within the movable cylinder 5 and is fixed to the movable cylinder 5. The movable contact 2 is housed at a constant distance from its outer periphery, and an arc-resistant discharge port 8 made of graphite or the like into which the fixed contact 1 can be inserted is integrated on the negative side. Side is movable cylinder 5
A cylindrical nozzle 9 made of an insulating material is connected to the inside of the buffer chamber 6 through the entire gas blowing hole 5a provided therein. In this configuration, when a breaker command is given to the breaker, the movable contactor 2, the movable cylinder 5, and the nozzle 9 are driven in the direction of the arrow A via the energizing rod 3 by a drive device (not shown). When the movable contact 2 leaves the fixed contact 1, an arc is generated between them, and at the same time a buffer chamber 6 is raised by the driven movable cylinder 5.
A gas flow 1o of arc extinguishing gas inside is blown toward the arc. As a result, as shown in the upper half of the figure, the arc 11 is elongated and cooled, and when the zero point of the AC power source is reached, it is extinguished and cut off.

そしてこのような場合の冷却力を高める手段の一つとし
て可動接触子2の端面とノズル9の内側の距離Sを長く
してアークの冷却長を増す方式がある。しかしながらこ
の方式にはしゃ断電源工が大きくなると、アークの径が
Dに比例して太きくなることからたとえばアークの径が
吐出口部分8のロ径D1.可動接触子2の内径D2より
も大きくなったとすると、いわゆる閉塞現象が起きて図
の下半分に示すようにガス流がなくなり、冷却力が急速
に低下してアークllaはバッファ室6内の方に拡がっ
てゆこうとし、それにともなう加熱さf17’cカスl
lbがバッファ室6内に逆流することになる。このよう
に了−りllaやガスflbがバッファ室6内まで拡が
っていると、電流零点前に閉塞状態が解除されたとして
もガスllbの流出に時間がかかって電流零点以後の再
発弧や再点弧の原因となりじゃ性能を低下させる欠点と
なっていた。
One way to increase the cooling power in such a case is to increase the distance S between the end face of the movable contactor 2 and the inside of the nozzle 9 to increase the cooling length of the arc. However, in this method, as the breaker becomes larger, the diameter of the arc becomes thicker in proportion to D. For example, if the diameter of the arc becomes larger than the diameter D1 of the discharge port portion 8. If it becomes larger than the inner diameter D2 of the movable contactor 2, a so-called blockage phenomenon occurs and the gas flow disappears as shown in the lower half of the figure, the cooling power rapidly decreases, and the arc lla is directed towards the inside of the buffer chamber 6. The heat that accompanies this is likely to spread.
lb will flow back into the buffer chamber 6. In this way, if the gas lla and gas flb have spread into the buffer chamber 6, even if the blockage state is released before the current zero point, it will take time for the gas llb to flow out, causing re-ignition or re-ignition after the current zero point. This had the disadvantage of causing ignition and reducing performance.

この発明は上記従来の欠点を除去してアークの冷却を大
きくするとともに再発弧や再点弧の発生を防止してしゃ
断性能が向上されたカスしゃ断器のしゃ断室を提供する
ことを目的とする。
It is an object of the present invention to provide a breaker chamber for a cass breaker that eliminates the above-mentioned conventional drawbacks, increases cooling of the arc, prevents the occurrence of re-ignition and re-ignition, and improves the breaker performance. .

この発明によれば上記の目的は円柱状の固定接触子と、
該固定接触子と同軸上に対向し摺接可能に配置され通電
ロッドを介して駆動装置に連結される円筒状の可動接触
子と、前記通電ロッドにそれの外周と一定の間隔を保っ
て一体化された可動シリンダと、該可動シリンダの内壁
を摺動するとともに前記通電ロッドが軸動自在に支承さ
れて可動シリンダ内にバッファ室を画成する固定ピスト
ンと、前記可動接触子をその端面を含む外周辺と一定の
間隔を保って収納しかつ一側に前記固定接触子の嵌入可
能な吐出口を有し他側がバッファ室に連通する絶縁材料
による円筒状のノズルとを備えたしゃ断室において、前
記可動接触子の端面と前記ノズルの内壁との間隔の中程
に軸線と直角に配置され前記固定接触子が嵌入可能な貫
通孔およびその外側で前記ノズルの内壁と可動接触子の
外周の延長上との間になる複数個のガス吹付孔會有する
バリヤを設けることにより達せられる。
According to this invention, the above object is achieved by providing a cylindrical fixed contact;
a cylindrical movable contact coaxially opposed to the fixed contact and slidably connected to the driving device through a current-carrying rod; a fixed piston that slides on the inner wall of the movable cylinder and on which the current-carrying rod is rotatably supported to define a buffer chamber within the movable cylinder; a cylindrical nozzle made of an insulating material, which is housed at a constant distance from the outer periphery of the container, and has a discharge port into which the fixed contact can be fitted on one side, and a cylindrical nozzle made of an insulating material that communicates with the buffer chamber on the other side; , a through hole arranged perpendicularly to the axis in the middle of the interval between the end surface of the movable contact and the inner wall of the nozzle and into which the fixed contact can be inserted; This is accomplished by providing a barrier with a plurality of gas blowholes between it and the extension.

以下この発明の実施例を図面に基づき説明する。Embodiments of the present invention will be described below based on the drawings.

第2図および第3図において前記第1図の従来例と同一
部には同一符号を付すことで対応させ異なるところにつ
いて説明すると、それはノズル9内の可動接触子2の端
面と吐出口部分8との間隔内の中程に軸線と直角に配置
されたバリヤ12が設けられていることである。バリヤ
12は外周に筒状の縁12aを備える円板状で、円板部
12bには軸線と同軸上になる固定接触子1が嵌入可能
な貫通孔12cと1貫通孔12cの外側でノズル9の内
壁になる縁12 aの内側と・可動接触子2の外径D3
の延長上との間になる4個の弧状孔12dとが設けられ
、グラファイトなどの耐弧性の材料で作られている。そ
して可動接触子2の端面とバリヤ12の対面距離S1と
吐出口部分8の内壁とバリヤ12の対面距離S2との和
はアークを冷却するのに必要な長さに選定され、貫通孔
12cの直径は吐出口部分80ロ径D1とほぼ同等にな
っている。なおノZ゛リヤ12とノズル9との一体化接
着、ねじ込み、埋め込み成形のいずれでもよく、またノ
ズル9と合わせて耐弧性材料で一体成形してもよいこと
は当然である。以上の構成において大電流しゃ断により
ノズルの閉塞現象が起こシ、了−り11がバッファ室6
の方に拡がろうとしてもバリヤ12により抑制されてそ
の外径が貝通孔12cの直径を少し超える程度である。
In FIGS. 2 and 3, the same parts as in the conventional example shown in FIG. A barrier 12 is provided midway within the spacing between and perpendicular to the axis. The barrier 12 has a disk shape with a cylindrical edge 12a on the outer periphery, and the disk portion 12b has a through hole 12c coaxial with the axis into which the fixed contact 1 can be fitted, and a nozzle 9 outside the first through hole 12c. The inner side of the edge 12 a and the outer diameter D3 of the movable contact 2
Four arcuate holes 12d are provided between the extensions of the holes 12d and are made of an arc-resistant material such as graphite. The sum of the facing distance S1 between the end face of the movable contactor 2 and the barrier 12 and the facing distance S2 between the inner wall of the discharge port portion 8 and the barrier 12 is selected to be a length necessary to cool the arc, and the length of the through hole 12c is The diameter is approximately equal to the diameter D1 of the discharge port portion 80. Note that the nozzle 12 and the nozzle 9 may be integrally bonded, screwed together, or embedded, or may be integrally molded together with the nozzle 9 from an arc-resistant material. In the above configuration, a blockage phenomenon of the nozzle occurs due to large current interruption, and the buffer chamber 6
Even if it tries to expand in that direction, it is restrained by the barrier 12 and its outer diameter is only slightly larger than the diameter of the shell hole 12c.

この結果バッファ室6内へのアーク11やアーク11に
より加熱されたガスllbの逆流が大幅に少なくなり、
閉塞解除後は速やかに冷たいガス流10が回復して電流
零点以後の再発弧や再点弧を防止し、しゃ断室のしゃ断
性能を向上させる。
As a result, the backflow of the arc 11 and the gas llb heated by the arc 11 into the buffer chamber 6 is significantly reduced.
After the blockage is released, the cold gas flow 10 is quickly restored, preventing re-ignition or re-ignition after the current zero point, and improving the breaker performance of the breaker chamber.

なお以上の実施例は図でも明らかなように両方向吹付(
ダブルフロー)形であるが通電ロッドが棒状になるシン
グルフロー形の場合に対し、でも同様の効果が得られる
。また吐出口部分8の材質を耐弧性と同時に導電性を備
えるグラファイトを使用したことでバリヤの抑制効果が
大きく発揮されたが、ノズルと一体物の絶縁性材料で形
成してもかなりの抑制効果が得られる。
In addition, as is clear from the figure, the above embodiments are sprayed in both directions (
Although the current-carrying rod is a double-flow type, the same effect can be obtained in the case of a single-flow type in which the current-carrying rod is rod-shaped. In addition, by using graphite, which is arc-resistant and conductive, as the material for the discharge port 8, the barrier was greatly suppressed, but even if it was made of an insulating material integrated with the nozzle, the barrier was significantly suppressed. Effects can be obtained.

以上述べたようにこの発明によればノズル内の弾性材料
によるバリヤを設けることでしゃ断性能の向上したバッ
ファ形のしゃ断室が得られる。
As described above, according to the present invention, a buffer-shaped breaker chamber with improved breaker performance can be obtained by providing a barrier made of an elastic material within the nozzle.

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

第1図は従来のバラノア形ガスしゃ断器のしゃ断室の一
例を示す要部縦断面図、第2図はこの発明によるバッフ
ァ形ガスしゃ断器のしゃ断室の一実施例を示す要部継断
面図、第3図は第2図の■−■線に沿う横断図である。 1・・・固定接触子、2・・・可動接触子、3・・・通
電ロッド、5・・・可動シリンダ、6・・・バッファ室
、7・・・固定ピストン、9・・・ノズル、12・・・
バリヤ、12C・・・貫通孔、12d・・・ガス吹付孔
。 71図 11a211b3  。 第2図 第3図
FIG. 1 is a vertical cross-sectional view of a main part showing an example of a breaking chamber of a conventional Balanoa type gas breaker, and FIG. 2 is a joint cross-sectional view of a main part showing an example of a breaking chamber of a buffer type gas breaker according to the present invention. , FIG. 3 is a cross-sectional view taken along the line ■-■ in FIG. DESCRIPTION OF SYMBOLS 1... Fixed contact, 2... Movable contact, 3... Current-carrying rod, 5... Movable cylinder, 6... Buffer chamber, 7... Fixed piston, 9... Nozzle, 12...
Barrier, 12C...through hole, 12d...gas blowing hole. 71Figure 11a211b3. Figure 2 Figure 3

Claims (1)

【特許請求の範囲】 1)円柱状の固定接触子と、該固定接触子と同軸上に対
向し摺接可能に配置され通電ロッドを介して駆動装置に
連結される円筒状の可動接触子と。 前記通電ロッドにそれの外周と一定の間隔を保って一体
化された可動シリンダと、該可動シリンダの内壁を摺動
するとともに前記通電ロッドが軸動自在に支承されて可
動シリンダ内にパランアミt画成する固定ピストンと、
前記可動接触子をその端面を含む外周辺と一定の間隔を
保って収納しかつ一側に前記固定接触子の嵌入可能な吐
出口を有し他側が前記バッファに連通ずる絶縁材料によ
る円状部のノズルとを備えたしゃ断室において、前記可
動接触子の端面と前記ノズルの内壁との間隔の中程に軸
線と直角に配置され前記固定接触子が嵌入可能な貫通孔
およびその外側で前記ノズルの内壁と可動接触子の外周
の延長上との間になる複数個のガス吹付孔を有するバリ
ヤを設けたことを特徴とするガスしゃ断器のしゃ断室。
[Scope of Claims] 1) A cylindrical fixed contact; a cylindrical movable contact coaxially opposed to the fixed contact, disposed in slidable contact and connected to a drive device via a current-carrying rod; . A movable cylinder is integrated with the energizing rod at a constant distance from the outer periphery of the energizing rod, and the energizing rod slides on the inner wall of the movable cylinder and is supported so as to be able to pivot freely. a fixed piston comprising;
a circular portion made of an insulating material that houses the movable contact at a constant distance from its outer periphery including its end face, has a discharge opening into which the fixed contact can be inserted on one side, and communicates with the buffer on the other side; a through-hole arranged perpendicularly to the axis in the middle of the interval between the end surface of the movable contact and the inner wall of the nozzle and into which the fixed contact can be fitted; 1. A breaker chamber for a gas breaker, comprising a barrier having a plurality of gas blowing holes between the inner wall of the movable contact and an extension of the outer periphery of the movable contact.
JP12544782A 1982-07-19 1982-07-19 Breaking chamber for gas breaker Pending JPS5916234A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP12544782A JPS5916234A (en) 1982-07-19 1982-07-19 Breaking chamber for gas breaker
EP83730073A EP0100749A1 (en) 1982-07-19 1983-07-19 Interrupting chamber for a compressed-air circuit breaker

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12544782A JPS5916234A (en) 1982-07-19 1982-07-19 Breaking chamber for gas breaker

Publications (1)

Publication Number Publication Date
JPS5916234A true JPS5916234A (en) 1984-01-27

Family

ID=14910305

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12544782A Pending JPS5916234A (en) 1982-07-19 1982-07-19 Breaking chamber for gas breaker

Country Status (2)

Country Link
EP (1) EP0100749A1 (en)
JP (1) JPS5916234A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH665054A5 (en) * 1985-01-18 1988-04-15 Sprecher Energie Ag EXHAUST GAS SWITCH.
EP3872829B1 (en) * 2018-10-24 2024-07-10 Mitsubishi Electric Corporation Gas circuit breaker

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2377695A1 (en) * 1977-01-18 1978-08-11 Merlin Gerin Automatic arc extinction system in circuit breaker - has sleeve with holes coaxially surrounding contacts
US4289942A (en) * 1977-07-29 1981-09-15 Westinghouse Electric Corp. Gas-blast circuit-interrupter with multiple insulating arc-shield construction

Also Published As

Publication number Publication date
EP0100749A1 (en) 1984-02-15

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