JPS5927419A - Device for switching vacuum switch - Google Patents
Device for switching vacuum switchInfo
- Publication number
- JPS5927419A JPS5927419A JP13772282A JP13772282A JPS5927419A JP S5927419 A JPS5927419 A JP S5927419A JP 13772282 A JP13772282 A JP 13772282A JP 13772282 A JP13772282 A JP 13772282A JP S5927419 A JPS5927419 A JP S5927419A
- Authority
- JP
- Japan
- Prior art keywords
- vacuum switch
- opening
- leaf spring
- vacuum
- force
- 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.)
- Granted
Links
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (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】
この発明は真空スイッチの開閉装置に関するもので、特
に、その固定電極支持構造に関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a vacuum switch opening/closing device, and particularly to a fixed electrode support structure thereof.
一般に真空スイッチの機械的最弱点部は電極に気密を保
ちながら可動性をもたせるためのベローズの部分である
といわれている。このベローズは衝撃力に対して非常に
弱いので、真空スイッチを使用した開閉装置には、この
衝撃力を低減するために、いろいろな方法が講じられて
いる。こうした衝撃力低減策を講じた開閉装置の1つと
して、第1図に示すような弾性体すなわち板ばねを介し
て真空スイッチの電極を固定した開閉装置がある。It is generally said that the weakest point mechanically in a vacuum switch is the bellows that allows the electrodes to move while keeping them airtight. Since the bellows is very weak against impact forces, various methods have been taken in switching devices using vacuum switches to reduce this impact force. One type of switchgear that takes such measures to reduce impact force is a switchgear shown in FIG. 1 in which the electrodes of a vacuum switch are fixed via an elastic body, that is, a leaf spring.
第1図に示すように、真空スイッチ/、固定電極コ、及
びこれに接離する可動電極3を具え、可動電極3はベロ
ーズVによって真空容器jIIC接続されている。固定
電極コは板はね6で保持され、板ばねは固定端7を有し
、中央部を取付ボルトざで固定電極コに接続されている
。As shown in FIG. 1, the vacuum switch includes a vacuum switch, a fixed electrode, and a movable electrode 3 that comes into contact with and separates from the vacuum switch, and the movable electrode 3 is connected to the vacuum container by a bellows V. The fixed electrode is held by a plate spring 6, the plate spring has a fixed end 7, and the central part is connected to the fixed electrode by a mounting bolt.
このように構成された従来の開閉装置は可動電極3が開
極動作を開始すると、固定電極コには、真空容器Sを介
して真空自閉力と、ベローズを変位させるのに要する力
の合力(以下真空スイッチの操作力と言う)がかかり、
板ばね板ルはそのばね力とこの操作力とが均合う位置ま
で変位し、ここに致って始めて両電極の開離がはじまる
。また、一方、衆知のように真空中では他の雰囲気にく
らべはるかに小さな加圧力で分子間の結合がおこること
からして、真空スイッチの場合、他の開閉接点にくらべ
はるかに電極の溶着が発生しやすい。In the conventional switching device configured in this way, when the movable electrode 3 starts the opening operation, the fixed electrode receives the vacuum self-closing force via the vacuum container S and the resultant force of the force required to displace the bellows. (hereinafter referred to as the operating force of the vacuum switch) is applied,
The leaf spring plate is displaced to a position where its spring force and this operating force are balanced, and only then does the separation of the two electrodes begin. On the other hand, as is well known, bonding between molecules takes place in a vacuum with a much smaller pressure than in other atmospheres, so in the case of vacuum switches, welding of electrodes is much more difficult than with other switching contacts. Likely to happen.
第1図の開閉装置において、電極溶着が発生すると、板
ばね乙に前記操作力に加え電極の溶着力に見合うばね力
を得る位置まで変位することになり、両電極の開離する
点は更に遅れることになる、また不幸にも、接点の溶着
力が板ばねの塑性変形領域に及ぶ様な大穴さである場合
には、開極ポイントがずれるばかりでなく、開極距離が
小さくなるという事態に陥ってしまう。特に負荷時タッ
プ切換器の様に、接点の11?I閉極ポイントが、その
機能上重要な電気機器においては、前記のような開極ポ
イントの遅れや開閉極ポイントのずれは大きな問題とな
る。In the switchgear shown in Fig. 1, when electrode welding occurs, leaf spring A is displaced to a position where it obtains a spring force commensurate with the welding force of the electrodes in addition to the above operating force, and the point at which both electrodes separate is further Unfortunately, if the hole is so large that the welding force of the contact reaches the plastic deformation region of the leaf spring, not only will the opening point shift, but the opening distance will become smaller. I fall into this. Especially like a tap changer on load, contact 11? In electrical equipment in which the I closing point is functionally important, the delay in the opening point and the shift in the opening/closing point as described above pose a major problem.
第1図は負荷時タップ切換器の回路方式の7例を示し、
//は変圧器タップ巻線、lλは奇数側主アーク接点、
13は抵抗接点、/lは偶数側主アーク接点、lりは限
流抵抗、16は使用中のタップ、/7は次に使用される
タップである。Figure 1 shows seven examples of on-load tap changer circuit systems.
// is the transformer tap winding, lλ is the odd-numbered side main arc contact,
13 is a resistance contact, /l is an even-numbered main arc contact, l is a current limiting resistor, 16 is a tap in use, and /7 is a tap to be used next.
第3図は第2図の各接点の切換シーケンスを示し、白線
はON期間を表わし、Tは奇数側主アーク接点/2の開
成(OFF)から偶数飼主アーク接点/グの閉成(oh
m)までの時間あるいはその逆の時間を示す。第3図の
様な切換シーケンスな必要とする負荷時、タップ切換器
において、前記の様な開極タイミングの遅れを生じると
、第3図の時間Tが短縮されることになり、もし仮に主
アーク時間よりTが短かくなるという事態が発生すれば
、タップ間短絡という負荷時タップ切換器にとって最悪
の事故に致ることになる。また板げねが塑性変形を生じ
ると、電極間の開極距離が小さくなり、機器として所定
の耐圧を有しなくなる。Figure 3 shows the switching sequence of each contact in Figure 2, the white line represents the ON period, and T is from the opening (OFF) of the odd-numbered main arc contact/2 to the closing (ohh) of the even-numbered main arc contact/G.
m) or vice versa. When the load requires a switching sequence as shown in Figure 3, if a delay in the opening timing as described above occurs in the tap changer, the time T in Figure 3 will be shortened. If a situation where T becomes shorter than the arc time occurs, the worst accident for the on-load tap changer will occur, which is a short circuit between taps. Furthermore, when the plate genera undergoes plastic deformation, the opening distance between the electrodes decreases, and the device no longer has a predetermined withstand voltage.
この発明は上記の欠点にかんがみなされたもので、従来
の緩衝能力を失うことなく安定した開閉極ポイントを有
する真空スイッチの開閉装置を提供することを目的とし
、固定電極を弾性体で支持する真空スイッチの開閉装置
において、開極時だけ弾性体の動作を規制するストッパ
を備えることを特徴としている。This invention was made in view of the above-mentioned drawbacks, and aims to provide a vacuum switch opening/closing device having stable switching pole points without losing the conventional buffering capacity. The switch opening/closing device is characterized in that it includes a stopper that restricts the operation of the elastic body only when the switch is opened.
以下、図示する実施例に関してこの発明を説明する。The invention will now be described with reference to illustrative embodiments.
第1図に示すように、この発明においては弾性体すなわ
ち板ばね乙の変位を阻止するストッパー(J)
7を設け、ストッパーを板ばね6の開極時変位する側に
接して位置させる。板ばねtのスパンはLとしストッパ
ータに大きさ1の穴を設け1は固定電極コとの間にその
動きを拘束しない程度の隙間をもつ大きさとする。スト
ッパー7以外は第1図の従来のものと同一構造である。As shown in FIG. 1, in the present invention, a stopper (J) 7 is provided to prevent the displacement of the elastic body, that is, the leaf spring A, and the stopper is positioned in contact with the side of the leaf spring 6 that is displaced when the contact is opened. The span of the plate spring t is L, and a hole of size 1 is provided in the stopper, and 1 is sized to have a gap between it and the fixed electrode to the extent that its movement is not restricted. The structure other than the stopper 7 is the same as the conventional one shown in FIG.
第1図のように構成した開閉装置において、可動電極3
が開極動作を始めると板ばね乙の(L−1)の部分はス
トッパーデによりその変位を阻止されるので、Lのスパ
ンを持った板バネが1のスパンの板ばねとなり、はね定
数が増大する。即ち板ばね乙の剛性が高(なるため、固
定電極に先に述べたような操作力が加えられても、従来
に比べ板ばね乙の変位は、はるかに小さくなるばかりで
なく、電極間が溶着していても板はね6が塑性変形をお
こしにくくなり、真空スイッチの開極ポイントは遅れる
ことなく、常に安定した位置で電極の開閉が行なわれる
。一方閉極時にはストッパー9は板ばね乙の動作に何の
規制も加えないので、従来の緩衝能力をそこなうことは
ない。In the switchgear configured as shown in Fig. 1, the movable electrode 3
When starts the opening operation, the (L-1) part of the leaf spring O is prevented from displacing by the stopper de, so the leaf spring with a span of L becomes a leaf spring with a span of 1, and the spring constant is increases. In other words, the rigidity of the leaf spring O is high (because of this, even if the above-mentioned operating force is applied to the fixed electrode, the displacement of the leaf spring O is not only much smaller than before, but also the distance between the electrodes is Even when welded, the plate spring 6 is less likely to undergo plastic deformation, and the opening point of the vacuum switch is always opened and closed at a stable position without delay.On the other hand, when closing, the stopper 9 is held at the plate spring 6. Since no restrictions are placed on the operation of the buffer, the conventional buffering capacity is not impaired.
(+’)
従って、この発明のように構成することによって次の様
な効果を持つ真空スイッチの開閉装置が得られる。(+') Therefore, by configuring as in the present invention, a vacuum switch opening/closing device having the following effects can be obtained.
(1)安定した開閉極動作ポイントを有する。(1) It has a stable switching and closing pole operating point.
(コ)接点の溶着が発生しても、弾性体に塑性変形が生
じにくくなるため、電極間の開極距離が小さくなる可能
性も少くなる。(g) Even if welding of the contacts occurs, plastic deformation is less likely to occur in the elastic body, which reduces the possibility that the opening distance between the electrodes will become smaller.
(3)閉極時の衝撃力に対しては十分な緩衝能力を有す
る。(3) It has sufficient buffering capacity against the impact force when the pole is closed.
第1図は従来の真空スイッチの開閉装置の7例を略示す
る断面図、第一図は真空スイッチの開閉装置が使用され
た負荷時タップ切換器の回路図、第3図は第一図の各ス
イッチの開閉シーケンスを示す図、第V図はこの発明に
よる真空スイッチの開閉装置のl実施例を示す第1図と
同様の断面図である。
l・・真空スイッチ、コ・・固定電極、3・・可動電極
、グ・・ベローズ、5・・真空容器、6・・板ばね、り
・・固定端、ざ・・取付ボルト、デ・・ストツバ、//
・・変圧器タップ巻線、12・・奇数側主アーク接点、
ノ3・・抵抗接点、/グ・・偶数側主アーク接点、1g
・・限流抵抗、16・・使用中タップ、17・・次に使
用されるタッグ。
なお、各図中、同一符号は同−又は相当部分を示す。
代理人 葛 野 信 −
(7)
幣1図 幣3図
ち2図 も4図Figure 1 is a cross-sectional view schematically showing seven examples of conventional vacuum switch opening/closing devices, Figure 1 is a circuit diagram of an on-load tap changer in which the vacuum switch opening/closing device is used, and Figure 3 is the first diagram. Figure V is a sectional view similar to Figure 1 showing an embodiment of the vacuum switch opening/closing device according to the present invention. L... Vacuum switch, C... Fixed electrode, 3... Movable electrode, G... Bellows, 5... Vacuum container, 6... Leaf spring, Ri... Fixed end, Z... Mounting bolt, De... Stotsuba, //
...Transformer tap winding, 12...Odd number side main arc contact,
No. 3: Resistance contact, /G: Even number side main arc contact, 1g
...Current limiting resistor, 16...Tap in use, 17...Tag to be used next. In each figure, the same reference numerals indicate the same or corresponding parts. Agent Makoto Kuzuno - (7) Figure 1, Figure 3, Figure 2, Figure 4.
Claims (1)
イッチの開閉装置において、真空スイッチの閉極動作時
は前記弾性体の動作を何ら規制せず開極時のみの動作を
規制するストッパーを備えることを特徴とする真空スイ
ッチの開閉装置。A vacuum switch opening/closing device in which an electrode of the vacuum switch is fixed via an elastic body includes a stopper that does not restrict the operation of the elastic body at all when the vacuum switch is closed, but restricts the operation only when the vacuum switch is open. A vacuum switch opening/closing device characterized by:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13772282A JPS5927419A (en) | 1982-08-06 | 1982-08-06 | Device for switching vacuum switch |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13772282A JPS5927419A (en) | 1982-08-06 | 1982-08-06 | Device for switching vacuum switch |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5927419A true JPS5927419A (en) | 1984-02-13 |
JPS6349846B2 JPS6349846B2 (en) | 1988-10-06 |
Family
ID=15205294
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13772282A Granted JPS5927419A (en) | 1982-08-06 | 1982-08-06 | Device for switching vacuum switch |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5927419A (en) |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55130025A (en) * | 1979-03-28 | 1980-10-08 | Mitsubishi Electric Corp | Mechanism for supporting vacuum switch |
-
1982
- 1982-08-06 JP JP13772282A patent/JPS5927419A/en active Granted
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS55130025A (en) * | 1979-03-28 | 1980-10-08 | Mitsubishi Electric Corp | Mechanism for supporting vacuum switch |
Also Published As
Publication number | Publication date |
---|---|
JPS6349846B2 (en) | 1988-10-06 |
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