JPH06196054A - Gas-blast circuit breaker - Google Patents
Gas-blast circuit breakerInfo
- Publication number
- JPH06196054A JPH06196054A JP34386192A JP34386192A JPH06196054A JP H06196054 A JPH06196054 A JP H06196054A JP 34386192 A JP34386192 A JP 34386192A JP 34386192 A JP34386192 A JP 34386192A JP H06196054 A JPH06196054 A JP H06196054A
- Authority
- JP
- Japan
- Prior art keywords
- puffer chamber
- gas
- arc
- chamber
- puffer
- 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
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
- H01H33/70—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid
- H01H33/7015—Switches with separate means for directing, obtaining, or increasing flow of arc-extinguishing fluid characterised by flow directing elements associated with contacts
- H01H33/7023—Switches 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
- H01H33/703—Switches 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、パッファ式及び熱パッ
ファ式併用ガス遮断器（ＧＣＢ）に係り、特に、低操作
力で大電流遮断を可能とする遮断部構成に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a puffer-type and thermal puffer-type combined gas circuit breaker (GCB), and more particularly to a structure of a breaking unit capable of breaking a large current with a low operating force.
【０００２】[0002]
【従来の技術】従来のパッファ式及び熱パッファ式併用
ＧＣＢは、図６に示すように構成されていた（特開平2
−129820 号公報）。パッファ室７内に熱パッファ室８
を形成し、絶縁ノズル５と可動子２の間にセパレータ２
０を設け、パッファ室７のガスを絶縁ノズル５に導くガ
ス流路１８ａと、熱パッファ室８のガスを絶縁ノズル５
に導くガス流路１８ｂが区分されている。電流遮断時
は、以下のように動作する。操作器（図示されていな
い）により駆動シャフト１１が右方に駆動され、固定子
１と可動子２が離れると、極間にアークが発生する。ア
ークのエネルギにより、熱パッファ室８内のガスが加熱
され高圧となる。また、パッファ室７内のガスは、アー
クによる加熱作用とともに圧縮作用によっても圧力が高
められる。そして、各消弧室で高圧となったガスを、熱
パッファ室８はガス流路１８ｂを介して、パッファ室７
はガス流路１８ａを介して、アークに吹き付け電流を遮
断する。2. Description of the Related Art A conventional puffer-type and thermal puffer-type GCB is constructed as shown in FIG.
-129820 publication). Thermal puffer chamber 8 in puffer chamber 7
To form a separator 2 between the insulating nozzle 5 and the mover 2.
0 is provided to guide the gas in the puffer chamber 7 to the insulating nozzle 5 and the gas in the thermal puffer chamber 8 to the insulating nozzle 5.
The gas flow path 18b leading to is divided. When the current is cut off, it operates as follows. When the drive shaft 11 is driven to the right by an operating device (not shown) and the stator 1 and the mover 2 are separated from each other, an arc is generated between the poles. The gas in the thermal puffer chamber 8 is heated by the energy of the arc to a high pressure. Further, the pressure of the gas in the puffer chamber 7 is increased by the compression action as well as the heating action by the arc. Then, the high-pressure gas in each arc extinguishing chamber is transferred from the heat puffer chamber 8 to the puffer chamber 7 via the gas passage 18b.
Blows on the arc to interrupt the current through the gas flow path 18a.
【０００３】[0003]
【発明が解決しようとする課題】上記、従来技術は、パ
ッファ室のガス流路のアーク吹き付け部が、熱パッファ
室のガス流路のアーク吹き付け部よりも可動子に近いの
で、アークのエネルギによるガス加熱期間はパッファ室
側が長くなる。そのため、大電流遮断時はパッファ室側
のガス圧が上昇し過ぎ、操作力に対する反力が大きくな
ってしまう。そして、熱パッファ室のガス加熱期間は短
いので、熱パッファ室の十分な圧力上昇が得られず、熱
パッファ併用遮断部の効果を十分発揮出来ない問題があ
った。また、熱パッファ室がパッファ室内に形成されて
いるため、各消弧室容積の設定に制約が生じる。In the above-mentioned prior art, since the arc spraying part of the gas flow path of the puffer chamber is closer to the mover than the arc spraying part of the gas flow path of the thermal puffer chamber, it depends on the energy of the arc. The gas heating period becomes longer on the puffer chamber side. Therefore, when the large current is cut off, the gas pressure on the puffer chamber side rises too much, and the reaction force against the operating force becomes large. Further, since the gas heating period of the heat puffer chamber is short, a sufficient pressure increase in the heat puffer chamber cannot be obtained, and there is a problem that the effect of the heat puffer combined shut-off portion cannot be sufficiently exerted. Further, since the thermal puffer chamber is formed inside the puffer chamber, there is a restriction in setting the volume of each arc extinguishing chamber.
【０００４】本発明の目的は、低操作力で遮断性能の優
れたガス遮断器を提供することにある。An object of the present invention is to provide a gas circuit breaker having a low operating force and an excellent breaking performance.
【０００５】[0005]
【課題を解決するための手段】上記目的は、パッファ室
の外周に熱パッファ室を設け、且つ、熱パッファ室のガ
ス流路のアーク吹き付け部を、パッファ室のガス流路の
アーク吹き付け部よりも可動子に近い方に配置すること
で達成される。The above object is to provide a thermal puffer chamber on the outer periphery of the puffer chamber, and to arrange the arc blowing portion of the gas passage of the thermal puffer chamber from the arc blowing portion of the gas passage of the puffer chamber. Is also achieved by placing it closer to the mover.
【０００６】[0006]
【作用】手段で述べた構成により、各消弧室の吹き付け
ガス圧が適正になり、また、遮断電流に対し、熱パッフ
ァ室容積を適切に設定できるので、低操作力で遮断性能
に優れたガス遮断器を構成できる。With the structure described in the means, the blowing gas pressure in each arc extinguishing chamber becomes appropriate, and the volume of the thermal puffer chamber can be set appropriately with respect to the breaking current, so that the breaking performance is excellent with low operating force. A gas circuit breaker can be constructed.
【０００７】[0007]
【実施例】以下、本発明の実施例を図１から図５により
説明する。Embodiments of the present invention will be described below with reference to FIGS.
【０００８】図１は投入状態を示す。電流は固定子１，
可動子２と流れる。ピストン１２とパッファシリンダ１
３によってパッファ室７が形成され、パッファシリンダ
１３の外周には熱パッファ室８がパッファ室７と分離さ
れて設けられている。また、絶縁ノズル５と可動子２の
間に、各消弧室のガス流路を兼ねた絶縁カバー６を設
け、熱パッファ室８のガス流路１８ｂとパッファ室７の
ガス流路１８ａを形成する。FIG. 1 shows a closed state. Current is stator 1,
It flows with the mover 2. Piston 12 and puffer cylinder 1
3, a puffer chamber 7 is formed, and a thermal puffer chamber 8 is provided on the outer periphery of the puffer cylinder 13 separately from the puffer chamber 7. Further, an insulating cover 6 which also serves as a gas flow path for each arc extinguishing chamber is provided between the insulating nozzle 5 and the mover 2 to form a gas flow path 18b for the thermal puffer chamber 8 and a gas flow path 18a for the puffer chamber 7. To do.
【０００９】図２は遮断動作中期を示す。パッファシリ
ンダ１３が遮断動作することでパッファ室７内のガスが
圧縮され高圧となる。また、可動子２と固定子１が開離
し、アーク１６が発生する。アーク熱がアーク付近のガ
スを加熱し、高温高圧となる。熱パッファ室８のガス圧
は遮断器タンク（図示していない）内のガス圧に等しい
のでバックフローが発生し、高温高圧ガスが貯留され
る。また、アーク熱による高温高圧ガスがパッファ室７
内のガス圧より高ければ、アーク１６付近のガスがパッ
ファ室７内にバックフローする。ここで、パッファ室７
内には高圧ガスにより操作力に対する反力が発生する。
しかし、パッファシリンダ１３の内径は、中，小電流遮
断に必要なだけのパッファ圧力が得られればよい程度に
小さく出来るので、操作反力は小さくて済む。FIG. 2 shows the middle of the breaking operation. The shutoff operation of the puffer cylinder 13 compresses the gas in the puffer chamber 7 to a high pressure. Further, the mover 2 and the stator 1 are separated from each other, and an arc 16 is generated. The arc heat heats the gas near the arc, resulting in high temperature and high pressure. Since the gas pressure in the thermal puffer chamber 8 is equal to the gas pressure in the circuit breaker tank (not shown), backflow occurs and high-temperature high-pressure gas is stored. In addition, the high-temperature high-pressure gas generated by the arc heat is stored in the puffer chamber 7.
If it is higher than the gas pressure inside, the gas near the arc 16 backflows into the puffer chamber 7. Here, puffer room 7
A reaction force against the operating force is generated inside by the high pressure gas.
However, the inner diameter of the puffer cylinder 13 can be made small to the extent that the puffer pressure necessary for interrupting the medium and small currents can be obtained, so that the operation reaction force can be small.
【００１０】図３は遮断動作後期を示す。パッファ室
７、及び熱パッファ室８からアーク１６へ、それぞれガ
ス流路１８ａ，１８ｂを通ってガスが吹き付けられ、電
流は遮断される。ここで、大電流遮断は熱パッファ作用
によるものであり、熱パッファ室８からのガス吹き付け
が主となる。FIG. 3 shows the latter half of the breaking operation. Gas is blown from the puffer chamber 7 and the thermal puffer chamber 8 to the arc 16 through the gas flow paths 18a and 18b, respectively, and the current is cut off. Here, the large current interruption is due to the action of the thermal puffer, and the gas is mainly blown from the thermal puffer chamber 8.
【００１１】図４は、図３において、ノズル部断面Ａか
ら可動子側を見た図である。パッファ室７からのガス流
は、紙面から手前に垂直に流れている。一方、熱パッフ
ァ室８からのガス流は、同じく紙面から手前に垂直に流
れ、途中からノズルスロート２１方向に曲がって流れて
いる。FIG. 4 is a view of the mover side viewed from the cross section A of the nozzle portion in FIG. The gas flow from the puffer chamber 7 flows vertically from the paper surface to the front. On the other hand, the gas flow from the heat puffer chamber 8 also flows vertically from the paper surface to the front, and bends toward the nozzle throat 21 from the middle.
【００１２】図５には本構造での大電流遮断時の圧力特
性を示す。熱パッファ室のガス流路のアーク吹き付け部
は、パッファ室のガス流路のアーク吹き付け部より可動
子側に位置するので、熱パッファ室の方が開極後のアー
ク熱による加熱期間が長くなり、ガス圧上昇は熱パッフ
ァ室の方が大きい。パッファ室は、パッファシリンダの
遮断動作による圧縮作用に、アーク熱による加熱作用が
加わり、圧力上昇していく。FIG. 5 shows the pressure characteristics when a large current is cut off in this structure. Since the arc blowing part of the gas flow path of the heat puffer chamber is located closer to the mover than the arc blowing part of the gas flow path of the puffer chamber, the heat puffer chamber has a longer heating period due to arc heat after opening. The rise of gas pressure is larger in the thermal puffer chamber. The pressure in the puffer chamber increases due to the compression action due to the shutoff action of the puffer cylinder and the heating action due to the arc heat.
【００１３】[0013]
【発明の効果】本発明によれば、各消弧室からのアーク
へのガス吹き付けが適切に出来、また、遮断電流に対
し、熱パッファ室容積を適切に設定出来るので、低操作
力で遮断性能に優れたガス遮断器を提供できる。According to the present invention, the gas can be properly blown to the arc from each arc extinguishing chamber, and the volume of the thermal puffer chamber can be appropriately set with respect to the breaking current. A gas circuit breaker with excellent performance can be provided.
【図１】本発明の一実施例の投入状態の断面図。FIG. 1 is a sectional view of an embodiment of the present invention in a closed state.
【図２】本発明の一実施例の遮断動作中期状態の断面
図。FIG. 2 is a cross-sectional view of a middle state of the breaking operation according to the embodiment of the present invention.
【図３】本発明の一実施例の遮断動作後期状態の断面
図。FIG. 3 is a cross-sectional view showing the latter state of the breaking operation according to the embodiment of the present invention.
【図４】本発明の一実施例のノズルの断面図。FIG. 4 is a sectional view of a nozzle according to an embodiment of the present invention.
【図５】本発明による各消弧室の圧力特性図。FIG. 5 is a pressure characteristic diagram of each arc extinguishing chamber according to the present invention.
【図６】従来のパッファ式，熱パッファ式併用ガス遮断
器の説明図。FIG. 6 is an explanatory diagram of a conventional puffer-type and thermal puffer-type combined gas circuit breaker.
１…固定子、２…可動子、３…主接触子、５…絶縁ノズ
ル、６…絶縁カバー、７…パッファ室、８…熱パッファ
室、１２…ピストン、１３…パッファシリンダ、１５…
シリンダ、１８ａ…パッファ室ガス流路、１８ｂ…熱パ
ッファ室ガス流路。DESCRIPTION OF SYMBOLS 1 ... Stator, 2 ... Mover, 3 ... Main contactor, 5 ... Insulation nozzle, 6 ... Insulation cover, 7 ... Puffer chamber, 8 ... Thermal puffer chamber, 12 ... Piston, 13 ... Puffer cylinder, 15 ...
Cylinder, 18a ... Puffer chamber gas passage, 18b ... Thermal puffer chamber gas passage.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 小柳 修 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 (72)発明者 樫村 勝一 茨城県日立市大みか町七丁目１番１号 株 式会社日立製作所日立研究所内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Osamu Koyanagi 7-1-1 Omika-cho, Hitachi City, Hitachi, Ibaraki Hitachi Ltd. Hitachi Research Laboratory (72) Inventor Katsuichi Kashimura 7-chome, Omika-cho, Hitachi City, Ibaraki Prefecture No. 1 Hitachi Ltd. Hitachi Research Laboratory
Claims (1)
能に優れたガスを充填し、容器内の遮断部は、絶縁ノズ
ル，固定子，可動子，シリンダ及び固定ピストンよりな
るパッファ室、前記可動子側に設けられた排気路等によ
り構成されるガス遮断器において、 前記パッファ室の外周に熱パッファ室を設け、前記絶縁
ノズル内に、前記パッファ室と前記熱パッファ室の各消
弧室からのガス流路を兼ねた絶縁カバーを設け、前記熱
パッファ室からのガス流路のアーク吹き付け部は、前記
パッファ室からのガス流路のアーク吹き付け部よりも前
記可動子に近く、前記各消弧室からのガス流路は分離し
ていることを特徴とするガス遮断器。1. A grounded container is filled with a gas having excellent insulation performance such as SF 6 gas, and a shutoff part in the container is a puffer chamber composed of an insulating nozzle, a stator, a mover, a cylinder and a fixed piston. A gas circuit breaker constituted by an exhaust path provided on the mover side, a heat puffer chamber is provided on the outer periphery of the puffer chamber, and the puffer chamber and the heat puffer chamber are extinguished in the insulating nozzle. An insulating cover that also serves as a gas flow path from the arc chamber is provided, and the arc blowing part of the gas flow path from the thermal puffer chamber is closer to the mover than the arc blowing part of the gas flow path from the puffer chamber, A gas circuit breaker characterized in that the gas flow paths from the arc extinguishing chambers are separated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34386192A JPH06196054A (en) | 1992-12-24 | 1992-12-24 | Gas-blast circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34386192A JPH06196054A (en) | 1992-12-24 | 1992-12-24 | Gas-blast circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06196054A true JPH06196054A (en) | 1994-07-15 |
Family
ID=18364806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34386192A Pending JPH06196054A (en) | 1992-12-24 | 1992-12-24 | Gas-blast circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06196054A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012129091A (en) * | 2010-12-16 | 2012-07-05 | Japan Ae Power Systems Corp | Puffer type gas circuit breaker |
| US9299507B2 (en) | 2011-05-17 | 2016-03-29 | Mitsubishi Electric Corporation | Gas circuit breaker |
-
1992
- 1992-12-24 JP JP34386192A patent/JPH06196054A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012129091A (en) * | 2010-12-16 | 2012-07-05 | Japan Ae Power Systems Corp | Puffer type gas circuit breaker |
| US9299507B2 (en) | 2011-05-17 | 2016-03-29 | Mitsubishi Electric Corporation | Gas circuit breaker |
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