JPS61124019A - Arc extinguishing apparatus - Google Patents
Arc extinguishing apparatusInfo
- Publication number
- JPS61124019A JPS61124019A JP24529684A JP24529684A JPS61124019A JP S61124019 A JPS61124019 A JP S61124019A JP 24529684 A JP24529684 A JP 24529684A JP 24529684 A JP24529684 A JP 24529684A JP S61124019 A JPS61124019 A JP S61124019A
- Authority
- JP
- Japan
- Prior art keywords
- arc
- contact
- contacts
- pair
- extension plate
- 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
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
- H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
- H01H2009/348—Provisions for recirculation of arcing gasses to improve the arc extinguishing, e.g. move the arc quicker into the arcing chamber
Landscapes
- 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】
〔技術分野〕
この発明は、開閉器や回路しゃ断器等に適用される消弧
装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an arc extinguishing device applied to a switch, a circuit breaker, etc.
第4図ないし第6図に従来例を示す。消弧性能を左右す
るアーク電圧はアーク伸長度合、アーク分割の度合によ
るが、第4図は可動接触子50の可動接点51と固定接
点52との間にグリッド53を配設したいわゆるアーク
冷却型で、グリッド53のアーク吸引力でアークを伸長
し消弧させるものである。第5図は並列配置となる固定
接触子54と可動接触子55の接点56.57にアーク
走行板58.59を連続し、アーク走行板58.59に
グリッド60を配設したいわゆる電磁駆動消弧型で、接
触子54.55が並列に対向するためアークに接触子5
4.55を流れる電流による電磁駆動力が作用し、この
力でアークはアーク走行板58.59に移行し、グリッ
ド60に移動するものである。前者に比ベアークが接点
から直ちに離れるため接点の損傷が少なく、またアーク
電圧が高く消弧性能に優れる。Conventional examples are shown in FIGS. 4 to 6. The arc voltage, which affects the arc extinguishing performance, depends on the degree of arc extension and the degree of arc division, but FIG. The arc is extended and extinguished by the arc suction force of the grid 53. FIG. 5 shows a so-called electromagnetic drive extinguisher in which arc running plates 58 and 59 are connected to contact points 56 and 57 of a fixed contact 54 and a movable contact 55 arranged in parallel, and a grid 60 is arranged on the arc running plates 58 and 59. Since the arc type has contacts 54 and 55 facing in parallel, contact 5 is connected to the arc.
An electromagnetic driving force is applied by the current flowing through the arc 4.55, and this force causes the arc to move to the arc traveling plate 58, 59 and to the grid 60. Compared to the former, the bare arc immediately separates from the contact, so there is less damage to the contact, and the arc voltage is high and the arc extinguishing performance is excellent.
第6図はいわゆる2点切り接点構造で、一対の・ 固定
接触子61.62に設けた固定接点63.64に、一対
の可動接点65.66をもった可動接触子67が離合し
、各接点63.65および64゜66間発生した一対の
アークの相互の電磁反発力によりアークを伸長させてグ
リッド68.69に導き消弧させる。このものは、アー
ク相互の電磁反発力によりアークを伸長させるとともに
アークを2個に分けたため消弧性能は前二者よりも優れ
たものとなる。FIG. 6 shows a so-called two-point break contact structure, in which a movable contact 67 having a pair of movable contacts 65 and 66 separates from a fixed contact 63 and 64 provided on a pair of fixed contacts 61 and 62. The mutual electromagnetic repulsion of the pair of arcs generated between the contact points 63.65 and 64.degree. 66 causes the arc to elongate, guide it to the grid 68.69, and extinguish it. In this case, the arc is extended by mutual electromagnetic repulsion and the arc is divided into two parts, so the arc extinguishing performance is superior to the former two.
しかしながら、これらの消弧装置は、グリッドおよびア
ーク走行板を除いた場合、アーク伸長作用は接触子を流
れる電流による電磁駆動力および一対のアークの電磁反
発力のいずれか一方のみであり、より高いアーク電圧を
得るにはまだ十分ではなかった。However, in these arc extinguishing devices, when the grid and arc traveling plate are excluded, the arc extension action is only one of the electromagnetic driving force due to the current flowing through the contactor and the electromagnetic repulsion force of the pair of arcs, and the arc extension action is higher. It was still not enough to obtain arc voltage.
この発明の目的は、より一層大きいアーク伸長が得られ
、消弧性能を向上できる消弧装置を提供することである
。An object of the present invention is to provide an arc extinguishing device that can obtain even greater arc extension and improve arc extinguishing performance.
この発明の消弧装置は、並列に配置されて各先端部に相
離台する接点を設けた一対の接触子と、これらの接触子
の先方に配置されて電磁駆動されたアークの中央伸長部
を分割させるアーク伸長板と、このアーク伸長板により
分割された一対のアークの電磁反発力による移動方向と
平行で前記アーク伸長板および前記接点の両側に配置さ
れて前記アークの進行側のガスを前記接点側に環流する
外側通路を形成する一対のアークガス環流側板とを備え
たものである。一対の接触子が並列に並ぶことによりア
ークに電磁駆動力が作用し、アークの中央伸長部がアー
ク伸長板に接触したときの一対のアークの相互の電磁反
発力によりアークを相互に引離す。このときアークガス
環流側板によりアークの進行方向の前後のガス圧を均一
にし、負圧によるアークの進行の抵抗をなくする。した
がってアークが2分割されるとともに大きい伸長となっ
て消弧が促進される。これにグリッドやアーク走行板を
設けるとさらに消弧性能が向上する。The arc extinguishing device of the present invention includes a pair of contacts arranged in parallel and each having a contact that separates from the tip, and a central extension part of an arc that is arranged ahead of these contacts and is electromagnetically driven. an arc extension plate that divides the arc, and an arc extension plate that is arranged on both sides of the arc extension plate and the contact point parallel to the moving direction due to the electromagnetic repulsion of the pair of arcs divided by the arc extension plate, and that is arranged on both sides of the arc extension plate and the contact point to and a pair of arc gas circulation side plates forming an outer passage for circulation to the contact side. By arranging the pair of contacts in parallel, an electromagnetic driving force acts on the arc, and when the central extension part of the arc contacts the arc extension plate, the arcs are separated from each other by the mutual electromagnetic repulsion of the pair of arcs. At this time, the arc gas recirculation side plates equalize the gas pressure in the front and rear directions of the arc, eliminating resistance to arc progression due to negative pressure. Therefore, the arc is divided into two parts and is greatly elongated, thereby promoting arc extinguishment. If a grid or arc traveling plate is provided on this, the arc extinguishing performance will be further improved.
実施例
この発明の−の実施例を第1図ないし第3図に基づいて
説明する。図において、回路しゃ断や開閉器のケース1
の底部に消弧室2を形成し、消弧室2の中央上部に固定
接触子3および可動接触子4を垂直姿勢で互いに並列に
配置し、両者の下端となる先端部に相離台する固定接点
5および可動接点6を設ける。消弧室2の底面にアーク
伸長板7を敷設するが、このアーク伸長板7は前記接触
子3,4の先方に位置し接触子3,4の長手方向に直角
で可動接触子4の開閉方向に平行な方向に配置される。Embodiment A second embodiment of the present invention will be described with reference to FIGS. 1 to 3. In the figure, circuit breaker and switch case 1
An arc extinguishing chamber 2 is formed at the bottom of the arc extinguishing chamber 2, and a fixed contact 3 and a movable contact 4 are arranged vertically and parallel to each other in the upper center of the arc extinguishing chamber 2, and a separation table is provided at the tip of the lower end of the arc extinguishing chamber 2. A fixed contact 5 and a movable contact 6 are provided. An arc extension plate 7 is installed on the bottom of the arc extinguishing chamber 2, and this arc extension plate 7 is located in front of the contacts 3 and 4 and is perpendicular to the longitudinal direction of the contacts 3 and 4 to open and close the movable contact 4. placed in a direction parallel to the direction.
このアーク伸長板7はアーク走行を兼ねるもので、アー
ク伸長板7に対向して接触子3.4の両側に上側アーク
走行板8.9が配置され、右側の上側アーク走行板9は
固定接触子3に連続するとともに、左側の上側アーク走
行板8は稼動接触し4と電気的に接続(図示せず)され
ている。これらの上側アーク走行板8,9、両接触子3
.4の接点5.6を有する付近およびアーク伸長板7の
両側すなわちアークの進行方向と平行に一対のアークガ
ス環流側板11が配置され、アークガス環流側板11の
外側に外側通路11aを形成する。アークガス環流側板
11はセラミック等の耐アーク性絶縁物で形成されると
とに、内側の中央下部すなわちアーク伸長板7の中央部
で可動接触子4の開極時の固定接触子3との開き角度の
2等分線上に突起12を一体形成している。アークガス
環流側板11の両側すなわちアーク走行板8.9および
アーク伸長板7の端部にグリッド13.14が配置され
る。15は排気孔である。This arc extension plate 7 also serves as an arc traveler, and upper arc travel plates 8.9 are arranged on both sides of the contactor 3.4 facing the arc extension plate 7, and the upper arc travel plate 9 on the right side is a fixed contact. Continuing with the child 3, the left upper arc running plate 8 is in operational contact and electrically connected to the child 4 (not shown). These upper arc traveling plates 8, 9, both contacts 3
.. A pair of arc gas recirculation side plates 11 are disposed near the contact points 5.6 of 4 and on both sides of the arc extension plate 7, that is, parallel to the traveling direction of the arc, and form an outer passage 11a on the outside of the arc gas recirculation side plates 11. The arc gas circulation side plate 11 is made of an arc-resistant insulator such as ceramic, and is located at the lower center of the inner side, that is, at the center of the arc extension plate 7, where the movable contact 4 separates from the fixed contact 3 when the contact is opened. A protrusion 12 is integrally formed on the bisector of the angle. Grids 13.14 are arranged on both sides of the arc gas circulation side plate 11, ie at the ends of the arc running plate 8.9 and the arc extension plate 7. 15 is an exhaust hole.
今、短絡トリップ動作等により可動接触子4が開極動作
し、接点5.6間にアークA1が発生したとする。この
アークA1は、アークA1を通じて接触子3,4を流れ
る電流経路がU字形をなすことにより、下方に電磁駆動
力を受けてアークA2のように伸長し、アークA2の中
央伸長部aが突起8に到達しアークA3のようになる。Now, assume that the movable contact 4 is opened due to a short-circuit trip operation or the like, and an arc A1 is generated between the contacts 5 and 6. Since the current path flowing through the contacts 3 and 4 through the arc A1 forms a U-shape, this arc A1 receives an electromagnetic driving force downward and extends like an arc A2, and the central extension part a of the arc A2 protrudes. It reaches 8 and becomes like arc A3.
アークA3は接点5,6と突起8間に互いに逆向きの電
流となる一対のアークA4.A5に2分割されるととも
に、アークA4.A5相互の電磁反発力によりアークA
、、A、が相互に離れるようにアーク A6.A7のよ
うにアーク伸長板7上を移行する。アークが消弧するこ
となくさらに継続しても最終的にはグリッド9.10で
消弧される。また、アークが伸長走行する過程で発生し
たアークガスは第2図の矢印のようにアークガス環流側
板11の外側通路11aを環流して接点5.6側に帰還
し、アークの後側にまわり込んで背圧を上げる。The arc A3 is a pair of arcs A4., where current flows in opposite directions between the contacts 5, 6 and the protrusion 8. A5 is divided into two parts, and arc A4. Arc A due to mutual electromagnetic repulsion
, ,A, are arced away from each other A6. It moves on the arc extension plate 7 as shown in A7. Even if the arc continues without being extinguished, it will eventually be extinguished at grid 9.10. Further, the arc gas generated during the arc's elongation travels back through the outer passage 11a of the arc gas circulation side plate 11 as shown by the arrow in Fig. 2, returns to the contact 5.6 side, and wraps around to the rear side of the arc. Increase back pressure.
このように、接触子3,4を流れる電流による電磁駆動
力とアークA、、A5の相互の電磁反発力により、アー
クを伸長するためアークの伸長を大きくでき、またアー
クを2分割できるため、消弧性能が向上する。この場合
、アーク相互の電磁反発力は、第7図の2点切り構造の
場合、固定接点63.64間の絶縁距離を保つためある
距離以上接近させることができないが、この実施例では
アーク相互はきわめて接近した状態となるため、より強
い電磁反発力が得られる。さらにアークガス環流側板1
1によりアークの進行の後側のガス圧低下を防ぎ、アー
ク前後のアークガスの圧力差を低減するため、アークの
進行の抵抗とならない。In this way, the arc can be extended by the electromagnetic driving force caused by the current flowing through the contacts 3 and 4 and the mutual electromagnetic repulsion between the arcs A, A5, and the arc can be divided into two. Arc-extinguishing performance is improved. In this case, the mutual electromagnetic repulsive force between the arcs is such that, in the case of the two-point cut structure shown in FIG. Since they are very close together, a stronger electromagnetic repulsion is obtained. Furthermore, arc gas circulation side plate 1
1 prevents a drop in gas pressure on the rear side of the arc and reduces the pressure difference between the arc gas before and after the arc, so it does not become a resistance to the arc.
またグリッド13.14により確実に消弧できる。Further, the grids 13 and 14 ensure arc extinguishment.
なお突起12はアーク分割をしやすくかつアーク伸長距
離をとりやすくするものであるが、とくになくてもよい
。また突起12はアーク伸長板7に一体形成されてもよ
い。また走行板8.9およびグリッド13.14も必要
に応じて設けるものとする。さらに接触子3.4は両開
きでもよい。Note that the protrusions 12 are intended to facilitate arc division and increase the arc extension distance, but they do not need to be provided. Further, the protrusion 12 may be integrally formed with the arc extension plate 7. A running plate 8.9 and a grid 13.14 are also provided as necessary. Furthermore, the contact 3.4 can also be double-sided.
また、この発明は第6図の2点切り構造において、固定
接点と可動接点の各組に対して適用することができる。Further, the present invention can be applied to each set of fixed contacts and movable contacts in the two-point cut structure shown in FIG.
この発明のよれば、接触子の電流によるアーク電磁駆動
力と一対のアーク相互の電磁反発力によりアークを伸長
するとともに2分割しかつアークガス環流側板によりア
ーク前後のガス圧を均一にするため、消弧性能を向上で
きるという効果がある。According to this invention, the arc is extended and divided into two by the arc electromagnetic driving force generated by the current of the contact and the mutual electromagnetic repulsion between the pair of arcs, and the gas pressure before and after the arc is made uniform by the arc gas circulation side plate. This has the effect of improving arc performance.
第1図はこの発明の一実施例の要部断面図、第2図はそ
の横断面図、第3図はアークガス環流側板の片側の斜視
図、第4図ないし第6図は各々別の従来例の要部断面図
である。Fig. 1 is a sectional view of a main part of an embodiment of the present invention, Fig. 2 is a cross-sectional view thereof, Fig. 3 is a perspective view of one side of the arc gas circulation side plate, and Figs. 4 to 6 are each a different conventional one. It is a sectional view of the main part of an example.
Claims (3)
けた一対の接触子と、これらの接触子の先方に配置され
て電磁駆動されたアークの中央伸長部を分割させるアー
ク伸長板と、このアーク伸長板により分割された一対の
アークの電磁反発力による移動方向と平行で前記アーク
伸長板および前記接点の両側に配置されて前記アークの
進行側のガスを前記接点側に環流する外側通路を形成す
る一対のアークガス環流側板とを備えた消弧装置。(1) A pair of contacts that are arranged in parallel and have contact points that separate from each other at each end, and an arc extension plate that is arranged in front of these contacts and divides the central extension of the electromagnetically driven arc. and is arranged on both sides of the arc extension plate and the contact in parallel to the direction of movement due to the electromagnetic repulsion of the pair of arcs divided by the arc extension plate, and circulates the gas on the advancing side of the arc to the contact side. An arc extinguishing device comprising a pair of arc gas circulation side plates forming an outer passage.
央部に突起を有する特許請求の範囲第(1)項記載の消
弧装置。(2) The arc extinguishing device according to claim (1), wherein the arc extension plate has a protrusion at a central portion facing the pair of contacts.
されている特許請求の範囲第(1)項記載の消弧装置。(3) The arc extinguishing device according to claim (1), wherein the protrusion is integrally formed on the arc gas circulation side plate.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24529684A JPS61124019A (en) | 1984-11-20 | 1984-11-20 | Arc extinguishing apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP24529684A JPS61124019A (en) | 1984-11-20 | 1984-11-20 | Arc extinguishing apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS61124019A true JPS61124019A (en) | 1986-06-11 |
Family
ID=17131554
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP24529684A Pending JPS61124019A (en) | 1984-11-20 | 1984-11-20 | Arc extinguishing apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS61124019A (en) |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5137164U (en) * | 1974-07-22 | 1976-03-19 | ||
JPS5444775A (en) * | 1977-09-14 | 1979-04-09 | Matsushita Electric Works Ltd | Arc extinguishing chamber for wiring circuit breaker |
JPS55144616A (en) * | 1979-04-29 | 1980-11-11 | Matsushita Electric Works Ltd | Arc extinguishing device |
-
1984
- 1984-11-20 JP JP24529684A patent/JPS61124019A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5137164U (en) * | 1974-07-22 | 1976-03-19 | ||
JPS5444775A (en) * | 1977-09-14 | 1979-04-09 | Matsushita Electric Works Ltd | Arc extinguishing chamber for wiring circuit breaker |
JPS55144616A (en) * | 1979-04-29 | 1980-11-11 | Matsushita Electric Works Ltd | Arc extinguishing device |
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