JPS61101929A - Buffer type gas breaker - Google Patents
Buffer type gas breakerInfo
- Publication number
- JPS61101929A JPS61101929A JP22210984A JP22210984A JPS61101929A JP S61101929 A JPS61101929 A JP S61101929A JP 22210984 A JP22210984 A JP 22210984A JP 22210984 A JP22210984 A JP 22210984A JP S61101929 A JPS61101929 A JP S61101929A
- Authority
- JP
- Japan
- Prior art keywords
- puffer
- arc
- type gas
- circuit breaker
- 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
Links
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】 〔発明の利用分野〕 本発明はパッファ式ガス遮断器に係り、特に。[Detailed description of the invention] [Field of application of the invention] The present invention relates to a puffer type gas circuit breaker, and particularly to a puffer type gas circuit breaker.
自刃消弧能力を積極的に利用した遮断部構造に関する。The present invention relates to a structure of a breaking part that actively utilizes self-arc extinguishing ability.
パッファ式ガス遮断器は、簡単な構造と優れた遮断性能
により電力用遮断器の主流を占めている。Puffer type gas circuit breakers are the mainstream of power circuit breakers due to their simple structure and excellent circuit breaking performance.
しかし、パッファ式ガス遮断器は、パッファ室の消弧性
ガスを圧縮してアークに吹付け、消弧するという原理上
、遮断容量の増加と共に操作力の増強が必要となる。操
作力の増大は、信頼性やコストなど全ての面で好ましい
ことではない。However, since the puffer type gas circuit breaker compresses the arc-extinguishing gas in the puffer chamber and sprays it onto the arc to extinguish the arc, it is necessary to increase the operating force as well as increase the interrupting capacity. An increase in operating force is not desirable from all aspects such as reliability and cost.
一方、遮断動作時発生する遮断電流のアーク熱を吹付圧
力の加圧に利用する自刃消弧型遮断部は。On the other hand, a self-blade arc extinguishing type interrupter uses the arc heat of the interrupting current generated during interrupting operation to increase the spray pressure.
これまで種々提案されている０例えば、特公昭３４−４
５８５号、実公昭３４−７１３４号などである。この方
式は１機械的に吹付は圧力を発生する必要の無いこと、
また、上記公知例でも明らかなように可動部構造が簡単
であり軽量であることからパッファ式遮断器に較べては
るかに小さな操作力で良い利点がある６しかし、吹付は
圧力を遮断電流のアーク熱より得るため、大電流遮断時
の吹付は圧力は十分加圧されて性能は良好であるが、小
電流遮断時にはほとんど吹付は圧力が無く遮断できなく
なるという難点がある。自刃消弧型遮断部は、優れた特
徴を有したから、小電流遮断性能に対する欠点があるた
め採用されない問題があった。Various proposals have been made so far. For example,
No. 585, Utility Model Publication No. 34-7134, etc. This method has the following advantages: 1) There is no need to mechanically generate pressure for spraying;
In addition, as is clear from the above-mentioned known example, the movable part structure is simple and lightweight, so it has the advantage of requiring much less operating force than the puffer type circuit breaker. Since it is obtained from heat, when a large current is interrupted, the spray is sufficiently pressurized and the performance is good, but when a small current is interrupted, there is almost no pressure and the spray cannot be shut off, which is a drawback. Although the self-blade arc-extinguishing type interrupting unit had excellent characteristics, it had a drawback in terms of small current interrupting performance, so there was a problem that it was not adopted.
本発明の目的は、低操作力で大電流遮断可能なパッファ
式遮断器を提供することにある。An object of the present invention is to provide a puffer type circuit breaker capable of interrupting large currents with low operating force.
本発明は、従来のパッファ式遮断部に、自刃消弧型遮断
部の利点を積極的に利用して低操作力化を計ったもので
ある。すなわち、パッファシャフト内に空間部を設け、
この空間部は、可動接触子の中空部径より小さい孔を有
する連通部を介してのみ前記可動接触子の中空部と連通
ずることを特徴とするものである。The present invention is a conventional puffer-type shut-off section that actively utilizes the advantages of a self-blade arc-extinguishing shut-off section to reduce operating force. That is, by providing a space within the puffer shaft,
This space is characterized in that it communicates with the hollow portion of the movable contact only through a communicating portion having a hole smaller than the diameter of the hollow portion of the movable contact.
第１図に本発明の実施例であるパッファ式遮断部を開離
途中の状態で示した。固定部である固定接触子１と固定
ピストン２、可動部であるパッファシリンダ３、パッフ
ァシャフト４．可動接触子５、絶縁物ノズル６、絶縁物
カバー７から構成されている。ここで、パッファシャフ
ト４には、可動接触子５の中空部８径よりも小さい孔９
を有する連通部１０を介して中空部８とのみ連通する空
間部１１を設けている。FIG. 1 shows a puffer-type shutoff section according to an embodiment of the present invention in a state in the middle of being opened. A fixed contact 1 and a fixed piston 2 are fixed parts, a puffer cylinder 3 and a puffer shaft 4 are movable parts. It is composed of a movable contactor 5, an insulator nozzle 6, and an insulator cover 7. Here, the puffer shaft 4 has a hole 9 smaller than the diameter of the hollow part 8 of the movable contact 5.
A space portion 11 is provided which communicates only with the hollow portion 8 via a communication portion 10 having a diameter.
遮断動作を説明する０図示していない操作機によりパッ
ファシャフト４を図下方向に駆動することで、パッファ
シリンダ３．パッファシャフト４、固定ピストン２で囲
まれたパッファ室１２の消弧性ガスは圧縮される。一方
、動作と共に開離した固定接触子１と可動接触子５の間
にはアーク１３が生じる。第２図は、電流遮断時の各圧
力波形の概念図を示した。時間Ｔに対して電流■、パッ
ファ室１２、圧力Ｐ４．空間部１１圧力Ｐ２で表わして
いる。接触子の開離時点Ｔ□後の各圧力Ｐ１゜Ｐ２ は
、大電流アーク１３の熱により上昇し、その波形は電流
に依存した波形となる。電流遮断時点Ｔ２直前のアーク
１３は、パッファ室１２と空間部１１からの消弧性ガス
の吹付は作用を受ける。Describing the shutoff operation 0 By driving the puffer shaft 4 in the downward direction in the figure with an operating device (not shown), the puffer cylinder 3. The arc-extinguishing gas in the puffer chamber 12 surrounded by the puffer shaft 4 and the fixed piston 2 is compressed. On the other hand, an arc 13 is generated between the fixed contact 1 and the movable contact 5, which are separated with the operation. FIG. 2 shows a conceptual diagram of each pressure waveform at the time of current interruption. For time T, current ■, puffer chamber 12, pressure P4. The pressure in the space 11 is expressed as P2. The pressures P1 and P2 after the contact opening time T□ rise due to the heat of the large current arc 13, and their waveforms become dependent on the current. The arc 13 immediately before the current cutoff time T2 is affected by the blowing of arc-extinguishing gas from the puffer chamber 12 and the space 11.
大電流遮断時において空間部１１圧力Ｐ２は、アーク１
３熱を効率良く利用することでパッファ霊鳥
１２圧力Ｐ１よりも高圧に設定することが可能である。When a large current is interrupted, the pressure P2 in the space 11 is equal to the arc 1
By efficiently utilizing the three heats, it is possible to set the pressure higher than the puffer spirit bird 12 pressure P1.
さらに、連通部１０の孔９を中空部８径よりも小さくし
てノズルを形成することにより、熱的に高圧となった空
間部１１の消弧性ガスのアーク１３に対する吹付は作用
を効率良くすることができる。このように、パッファシ
ャフト４内に空間部１１を設けて自刃消弧型遮断器にお
ける消弧室として利用し、消弧性ガスの吹付けを効率良
く発揮させることにより大電流遮断性能の向上を計るこ
とができる。はとんど機械的に圧縮されるパッファ室１
２の圧力Ｐ２は、空間部１１からの吹付けにより性能が
向上するため従来に較べて低く設定することができる。Furthermore, by forming a nozzle by making the hole 9 of the communication part 10 smaller than the diameter of the hollow part 8, the arc extinguishing gas in the thermally high pressure space 11 can be sprayed onto the arc 13 efficiently. can do. In this way, the space 11 is provided in the puffer shaft 4 and used as an arc extinguishing chamber in a self-blade arc extinguishing type circuit breaker, and by efficiently blowing arc extinguishing gas, the large current interrupting performance can be improved. It can be measured. The puffer chamber 1 is mostly mechanically compressed.
The pressure P2 of No. 2 can be set lower than the conventional pressure because the performance is improved by spraying from the space 11.
すなわち操作力の軽減が可能となる効果がある。また、
空間部１１の圧力上昇により可動部に作用する力は、遮
断方向と同一方向であるため、さらに操作力を軽減でき
る効果もある。一方、自刃消弧型遮断部の欠点である小
電流遮断性能においては、機械的に圧縮されるパッファ
室１２からの消弧性ガスの吹付けにより十分確保するこ
とができる。In other words, there is an effect that the operating force can be reduced. Also,
Since the force acting on the movable part due to the pressure increase in the space 11 is in the same direction as the shutoff direction, there is also the effect that the operating force can be further reduced. On the other hand, the small current interrupting performance, which is a drawback of the self-blade arc-extinguishing type interrupter, can be sufficiently ensured by spraying arc-extinguishing gas from the mechanically compressed puffer chamber 12.
以上述べたように、従来からのパッファ式遮断部に、自
刃消弧型遮断部の特徴を効率良く発揮させることにより
パッファ式ガス遮断器の低操作力化が可能となる。As described above, it is possible to reduce the operating force of a puffer type gas circuit breaker by efficiently utilizing the characteristics of a self-blade arc-extinguishing type circuit breaker in a conventional puffer type circuit breaker.
第３図には本発明の異なる実施例を示した。本実施例は
、中空部８からパッファ室１２に連通する連通孔１４を
設けたもので、他の構造は、第１図と同じである。本実
施例によれば、連通部１０で制限されたアーク１３熱を
パッファ室１２に導き、アーク１３熱でパッファ室１２
圧力を高めるこさにより、パッファ室１２側からのアー
ク１３に対する吹付は作用を強化することができ、さら
に性能を向上できる効果がある。FIG. 3 shows a different embodiment of the invention. In this embodiment, a communication hole 14 communicating from the hollow part 8 to the puffer chamber 12 is provided, and the other structure is the same as that in FIG. 1. According to this embodiment, the heat of the arc 13 limited by the communication portion 10 is guided to the puffer chamber 12, and the heat of the arc 13 is transferred to the puffer chamber 12.
By increasing the pressure, the effect of spraying on the arc 13 from the puffer chamber 12 side can be strengthened, which has the effect of further improving performance.
本発明によれば、低操作力で大電流から中小電流全域を
遮断可能なパッファ式ガス遮断器を提供することができ
る。According to the present invention, it is possible to provide a puffer-type gas circuit breaker capable of interrupting the entire range of currents from large currents to small and medium currents with low operating force.
第１１！ｌは、本発明の一実施例のパッファ式ガス遮断
部の遮断途中断面図、第２図は、第１図の圧力特性概念
図、第３図は、本発明の他の実施例のパッファ遮断器の
遮断途中断面図である。11th! 1 is a cross-sectional view of a puffer-type gas shutoff part in an embodiment of the present invention during shutoff, FIG. 2 is a conceptual diagram of the pressure characteristics of FIG. 1, and FIG. 3 is a puffer shutoff of another embodiment of the present invention. FIG.
Claims (1)
動接触子、パッファシリンダとパッファシャフトおよび
固定ピストンから囲まれたパッファ室より構成されたパ
ッファ式ガス遮断器において、前記パッファシャフト内
に空間部を設け、この空間部は、前記可動接触子の中空
部径よりも小さい孔を有する連通部を介してのみ前記可
動接触子の中空部と連通したことを特徴とするパッファ
式ガス遮断器。1. A puffer type gas circuit breaker comprising a pair of releasable fixed contacts and a hollow movable contact in a container, a puffer chamber surrounded by a puffer cylinder, a puffer shaft, and a fixed piston, in which the puffer shaft A puffer-type gas characterized in that a space is provided inside the movable contact, and the space communicates with the hollow of the movable contact only through a communication part having a hole smaller than the diameter of the hollow of the movable contact. circuit breaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22210984A JPS61101929A (en) | 1984-10-24 | 1984-10-24 | Buffer type gas breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22210984A JPS61101929A (en) | 1984-10-24 | 1984-10-24 | Buffer type gas breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61101929A true JPS61101929A (en) | 1986-05-20 |
Family
ID=16777282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22210984A Pending JPS61101929A (en) | 1984-10-24 | 1984-10-24 | Buffer type gas breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61101929A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62257950A (en) * | 1986-05-06 | 1987-11-10 | Idemitsu Kosan Co Ltd | Thermoplastic resin composition |
-
1984
- 1984-10-24 JP JP22210984A patent/JPS61101929A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62257950A (en) * | 1986-05-06 | 1987-11-10 | Idemitsu Kosan Co Ltd | Thermoplastic resin composition |
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