JPH10308143A - Main circuit disconnector - Google Patents
Main circuit disconnectorInfo
- Publication number
- JPH10308143A JPH10308143A JP9118959A JP11895997A JPH10308143A JP H10308143 A JPH10308143 A JP H10308143A JP 9118959 A JP9118959 A JP 9118959A JP 11895997 A JP11895997 A JP 11895997A JP H10308143 A JPH10308143 A JP H10308143A
- Authority
- JP
- Japan
- Prior art keywords
- contact
- main circuit
- shield
- disconnector
- movable shield
- 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
- Gas-Insulated Switchgears (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、ガス絶縁金属閉鎖
形スイッチギヤなどに組み込まれる主回路断路器に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a main circuit disconnector incorporated in a gas-insulated metal closed switchgear or the like.
【0002】[0002]
【従来の技術】図3は、従来の主回路断路器が組み込ま
れたガス絶縁金属閉鎖形スイッチギヤの一例を示す右側
面図(但し、右側板を省く)、図4は、図3のC部拡大
縦断面詳細図である。2. Description of the Related Art FIG. 3 is a right side view showing an example of a conventional gas-insulated metal switchgear in which a main circuit disconnector is incorporated (however, a right side plate is omitted). FIG.
【0003】図3において、密封構造の金属箱体21の中
間やや前方(図示左寄り)には、金属箱体21を前後にガ
ス区分する隔壁21aが縦に設けられている。この隔壁21
aの後方にも、隔壁21cが縦に設けられ、この結果、隔
壁21aの前方には、低圧室31Aを形成している。In FIG. 3, a partition 21a for vertically gas-separating the metal box 21 is provided in the middle of the metal box 21 having a sealed structure and slightly forward (to the left in the drawing). This partition 21
A partition 21c is also provided vertically behind a, and as a result, a low-pressure chamber 31A is formed in front of the partition 21a.
【0004】前後の隔壁21a,21cの間には、これらの
隔壁21a,21cの間を上下にガス区分する横の隔壁21b
が設けられ、この隔壁21bの上方に断路器室31Bを形成
し、隔壁21bの下側に遮断器室31Cを形成している。こ
のうち、断路器室31Bと遮断器室31Cには、六フッ化硫
黄ガス(SF6 ガス)が絶縁ガスとして封入されてい
る。[0004] Between the front and rear partitions 21a and 21c, there is a horizontal partition 21b which vertically separates the space between these partitions 21a and 21c.
Are provided above the partition 21b to form a disconnector chamber 31B, and below the partition 21b, a circuit breaker chamber 31C is formed. Of these, the disconnector chamber 31B and the circuit breaker chamber 31C are filled with sulfur hexafluoride gas (SF 6 gas) as an insulating gas.
【0005】断路器室31Bの天井部には、絶縁ブッシン
グ27が3個貫設されている。隔壁21aの上端には、三相
の断路器24Aが気密に貫設され、この断路器24Aの上極
は、前述した絶縁ブッシング27の下端に導体で接続され
ている。[0005] Three insulating bushings 27 are provided through the ceiling of the disconnector chamber 31B. A three-phase disconnector 24A is hermetically provided at the upper end of the partition 21a, and the upper pole of the disconnector 24A is connected to the lower end of the insulating bushing 27 by a conductor.
【0006】断路器24Aの断路部24aの上部には、詳細
省略した接地断路器が組み込まれて、この断路器24Aは
接地装置付断路器となっている。断路部24aの下端は、
隔壁21bに縦貫された絶縁スペーサ28の上端に接続され
ている。A grounding disconnector, which is not described in detail, is incorporated above the disconnecting portion 24a of the disconnector 24A. The disconnecting switch 24A is a disconnector with a grounding device. The lower end of the disconnecting portion 24a
It is connected to the upper end of an insulating spacer 28 penetrating the partition 21b.
【0007】遮断器室31Cの上端には、真空遮断器25が
隔壁21aに前後に貫設されている。この真空遮断器25の
主回路部22の上端は、前述した絶縁スペーサ28の下端に
導体で接続されている。At the upper end of the circuit breaker chamber 31C, a vacuum circuit breaker 25 is provided to penetrate the partition 21a back and forth. The upper end of the main circuit portion 22 of the vacuum circuit breaker 25 is connected to the lower end of the insulating spacer 28 by a conductor.
【0008】真空遮断器25の下側には、断路器24Bが隔
壁21aに貫設され、この断路器24Bの上極は、導体32A
を介して真空遮断器25の主回路部22の下端に接続されて
いる。断路器24Bの断路部の下部にも、接地断路器が組
み込まれている。Under the vacuum circuit breaker 25, a disconnector 24B is provided through the partition 21a, and the upper pole of the disconnector 24B is connected to a conductor 32A.
Is connected to the lower end of the main circuit section 22 of the vacuum circuit breaker 25 via the. A grounding disconnector is also incorporated below the disconnecting portion of the disconnector 24B.
【0009】断路器24Bの下側には、避雷器23が隔壁21
aに前後に貫設されている。隔壁21cの前面には、遮断
器室31Cに対して、一対の取付板33が横設され、これら
の取付板33の前面には、支持碍子34を介して3本の主回
路導体32Bが固定されている。この主回路導体32Bの下
部は前方に湾曲して、断路器24Bの下極に接続されてい
る。A lightning arrester 23 is provided below the disconnector 24B.
a. A pair of mounting plates 33 are provided on the front surface of the partition wall 21c with respect to the breaker room 31C, and three main circuit conductors 32B are fixed to the front surfaces of these mounting plates 33 via support insulators 34. Have been. The lower portion of the main circuit conductor 32B curves forward and is connected to the lower pole of the disconnector 24B.
【0010】この主回路導体32Bの下端には、接続導体
11が接続され、この接続導体11の下端の前面には、図3
のC部拡大詳細図の図4に示す後述する断路器14が取り
付けられている。A connecting conductor is provided at the lower end of the main circuit conductor 32B.
3 is connected to the front surface of the lower end of the connection conductor 11 as shown in FIG.
A disconnector 14, which will be described later and shown in FIG.
【0011】隔壁21cの中間部には、ケーブルヘッド29
がケーブル室31D側から取り付けられ、主回路導体32B
の上端に前端が接続されている。このケーブルヘッド29
の下端には、金属箱体21が設置された床に形成されたケ
ーブルピットから立ち上げられた高圧架橋ポリエチレン
ケーブル30の上端が接続されている。A cable head 29 is provided at an intermediate portion of the partition 21c.
Is attached from the cable room 31D side, and the main circuit conductor 32B
The front end is connected to the upper end of. This cable head 29
The lower end is connected to the upper end of a high-pressure cross-linked polyethylene cable 30 raised from a cable pit formed on the floor where the metal box 21 is installed.
【0012】ケーブル室31Dの下端には、隔壁21cに固
定された貫通形の変流器26が示され、金属箱体21の前端
には、前面扉21dが示され、金属箱体21の背面には、背
面扉21eが示されている。At the lower end of the cable chamber 31D, a through-type current transformer 26 fixed to the partition 21c is shown. At the front end of the metal box 21, a front door 21d is shown. Shows a rear door 21e.
【0013】図4において、接続導体11の前面には、図
示しない前面図では円板状の接触子台13がボルト15で固
定されている。この接触子台13の前面から突設された円
筒部13aには、弧状の溝が外周に形成されている。In FIG. 4, a disk-shaped contact base 13 in a front view (not shown) is fixed to the front surface of the connection conductor 11 with bolts 15. An arc-shaped groove is formed on the outer periphery of the cylindrical portion 13a protruding from the front surface of the contact base 13.
【0014】円筒部13aの外周には、接触子4が環状に
配置され、これらの接触子4の後部の対向部側に形成さ
れた弧状の凸部は、円筒部13aの外周に形成された溝に
嵌合している。The contacts 4 are arranged in an annular shape on the outer periphery of the cylindrical portion 13a, and the arc-shaped convex portions formed on the opposite side of the rear portion of the contacts 4 are formed on the outer periphery of the cylindrical portion 13a. It is fitted in the groove.
【0015】環状に配置された接触子4の外面側の中央
部には、環状で内周に凹凸部が形成された間隔環7が挿
入され、この間隔環7の前後に対して、環状に形成され
たコイルばね6が張力を付与された状態で巻装されてい
る。At the center of the outer surface of the annularly arranged contact 4, there is inserted a spacing ring 7 having an irregular shape formed on the inner periphery thereof. The formed coil spring 6 is wound with tension applied.
【0016】接触子台13の底部の外周には、略半球状に
絞り加工された電界緩和用のシールド2の後端が嵌合
し、図示しない複数の皿小ねじで固定されている。この
シールド2の中心部には、貫通穴が形成され、この貫通
穴には、避雷器23の断路棒10の後部が嵌合した状態で示
されている。The rear end of the shield 2 for reducing the electric field, which has been drawn into a substantially hemispherical shape, is fitted to the outer periphery of the bottom of the contact base 13 and is fixed with a plurality of flat head screws (not shown). A through hole is formed in the center of the shield 2, and the rear part of the disconnecting rod 10 of the lightning arrester 23 is shown fitted in this through hole.
【0017】シールド2の形状が半球状に形成されてい
る理由は、特開昭60−128807号で開示されているよう
に、絶縁ガスの絶縁破壊電圧が、高圧の充電部の外周近
傍の電界強度に大きく影響するためである。The reason why the shape of the shield 2 is formed in a hemispherical shape is that, as disclosed in Japanese Patent Application Laid-Open No. 60-128807, the insulation breakdown voltage of the insulating gas is reduced by the electric field near the outer periphery of the high-voltage charged portion. This is because it greatly affects the strength.
【0018】[0018]
【発明が解決しようとする課題】ところが、このように
構成された主回路断路器においては、金属閉鎖形スイッ
チギヤの耐電圧試験のために、避雷器23の断路棒10を前
方に引き抜いた場合には、シールド2の中心に形成され
た貫通穴の内周近傍の絶縁ガス雰囲気の電界強度が高く
なるので、避雷器23の断路棒10の後端との間の耐電圧特
性が低下するおそれがある。However, in the main circuit disconnector constructed as described above, when the disconnecting rod 10 of the lightning arrester 23 is pulled forward for the withstand voltage test of the metal-closed switchgear. Since the electric field strength of the insulating gas atmosphere near the inner periphery of the through hole formed at the center of the shield 2 is increased, the withstand voltage characteristic between the lightning arrester 23 and the rear end of the disconnecting rod 10 may be reduced. .
【0019】そのため、避雷器23の後端と主回路断路器
との間隔を広げて、断路棒10のストロークを増やす方法
も考えられるが、すると、それだけ主回路断路器の取付
位置を後方に移動させなければならなくなるので、隔壁
21cの位置も後方に移動させなければならない。Therefore, it is conceivable to increase the stroke of the disconnecting rod 10 by increasing the distance between the rear end of the lightning arrester 23 and the main circuit disconnector. However, the mounting position of the main circuit disconnector is moved backward accordingly. So you have to
The position of 21c must also be moved backward.
【0020】すると、それだけ箱体の奥行きも増えるの
で、この箱体を設置するために要する受電設備の床面積
も広くなり、設置床面積の縮小化を図ったガス絶縁金属
閉鎖形スイッチギヤの特長を損なう。そこで、本発明の
目的は、絶縁占有空間を増やすことなく、耐電圧特性を
維持することのできる主回路断路器を得ることである。Then, since the depth of the box increases accordingly, the floor area of the power receiving equipment required for installing the box also increases, and the features of the gas insulated metal closed switchgear, which reduces the installation floor area. Impair. Therefore, an object of the present invention is to provide a main circuit disconnector capable of maintaining a withstand voltage characteristic without increasing the insulation occupied space.
【0021】[0021]
【課題を解決するための手段】請求項1に対応する発明
の主回路断路器は、軸方向に操作される断路棒の先端が
挿脱される接触部を主回路導体に固定される導体に装着
し、断路棒の挿入動作で接触部から退避し断路棒の脱動
作で復帰して凹部の開口部を塞ぐ可動シールドをシール
ドの凹部に遊嵌したことを特徴とする。According to a first aspect of the present invention, there is provided a main circuit disconnector in which a contact portion into which an end of a disconnecting rod operated in an axial direction is inserted and removed is connected to a conductor fixed to the main circuit conductor. The movable shield, which is mounted, retracts from the contact portion by the operation of inserting the disconnecting rod, returns by the operation of removing the disconnecting rod, and closes the opening of the concave portion, is loosely fitted into the concave portion of the shield.
【0022】また、特に、請求項2に対応する発明の主
回路断路器は、接触子台の外周に環状に配置される接触
子を接触部とし、接触子台と接触子の外周に設けられる
断面U字状のシールド筒をシールドとしたことを特徴と
する。In addition, in particular, the main circuit disconnector of the invention according to claim 2 has a contact portion which is a ring-shaped contact on the outer periphery of the contact base and is provided on the outer periphery of the contact base and the contact. A shield tube having a U-shaped cross section is used as a shield.
【0023】また、特に、請求項3に対応する発明の主
回路断路器は、略半球状で断面コ字状の接触台で導体と
シールドを構成し、この接触台の断面コ字状の凹部に装
着される接触板としたことを特徴とする。さらに、特
に、請求項4に対応する発明の主回路断路器は、可動シ
ールドの後部が退避する後部シールドを主回路導体の後
方に設けたことを特徴とする。In particular, the main circuit disconnector of the invention according to claim 3 comprises a conductor and a shield formed by a substantially hemispherical contact block having a U-shaped cross section, and a concave portion having a U-shaped cross section of the contact block. The contact plate is mounted on the contact plate. Furthermore, in particular, the main circuit disconnector of the invention according to claim 4 is characterized in that a rear shield in which a rear portion of the movable shield is retracted is provided behind the main circuit conductor.
【0024】このような手段によって、この発明では断
路棒の脱動作に伴って生じるシールドの凹部の開口端の
空間の電界強度の増加を、開口端を塞ぐ可動シールドで
解消する。With such a means, in the present invention, an increase in the electric field strength in the space at the opening end of the concave portion of the shield caused by the disconnection operation of the disconnecting rod is eliminated by the movable shield closing the opening end.
【0025】[0025]
【発明の実施の形態】以下、本発明の主回路断路器の一
実施形態を図面を参照して説明する。図1は、本発明の
主回路断路器の第1の実施形態を示す縦断面図で、従来
の技術で示した図4に対応し、特に、請求項2に対応
し、避雷器の断路棒10が断路された状態を示す。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the main circuit disconnector of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a first embodiment of a main circuit disconnector according to the present invention, which corresponds to FIG. 4 shown in the prior art, and in particular, corresponds to claim 2; Indicates a disconnected state.
【0026】図1において、図4で示した断路器と異な
るところは、接続導体11の下端の背面に後部シールド17
を設け、接触子台の中心に可動シールド3を進退自在に
貫設したことで、図4と同一要素には、同一符号を付し
て説明を省略する。In FIG. 1, the difference from the disconnector shown in FIG.
The movable shield 3 is provided at the center of the contact base so as to freely advance and retreat, and the same elements as those in FIG.
【0027】すなわち、図4で示した接触子台13と同形
の接触子台1は、円筒部1aの後端外周に形成された円
板部の上下が、接続導体11の後方から挿入された一対の
ボルト12で固定されている。That is, in the contact stand 1 having the same shape as the contact stand 13 shown in FIG. 4, the upper and lower sides of the disk formed on the outer periphery of the rear end of the cylindrical portion 1a are inserted from behind the connection conductor 11. It is fixed with a pair of bolts 12.
【0028】接触子台1の円筒部1aの底部の中央部に
は、環状の凸部1cが形成され、中心部に形成された貫
通穴には、以下説明する可動シールド3の軸部3aの後
部が貫通し、接触子台1の背面に添設された大座金とこ
の後部に圧入されたばねピン16によって、前方への抜け
止めが図られている。An annular convex portion 1c is formed at the center of the bottom of the cylindrical portion 1a of the contact base 1, and a through hole formed at the center portion has a shaft portion 3a of the movable shield 3 described below. The rear portion penetrates, and a large washer attached to the rear surface of the contact base 1 and a spring pin 16 press-fitted into the rear portion prevent the front portion from coming off.
【0029】可動シールド3の前端には、断路棒10と同
径の頭部3bが形成され、この頭部3bの背面には、凸
部3cが形成されている。可動シールド3の軸部3aに
は、復帰ばね5があらかじめ遊嵌され、この復帰ばね5
の前端は凸部3cの外周によって、後端は凸部1cによ
って上下方向の位置が維持され、図1では僅かに圧縮状
態にある。At the front end of the movable shield 3, a head 3b having the same diameter as the disconnecting rod 10 is formed, and at the back of the head 3b, a projection 3c is formed. A return spring 5 is loosely fitted to the shaft portion 3a of the movable shield 3 in advance.
The front end is maintained in the vertical direction by the outer periphery of the convex portion 3c, and the rear end is maintained in the vertical direction by the convex portion 1c, and is slightly compressed in FIG.
【0030】可動シールド3の頭部3bの外周の後部に
は、各接触子4の前端の対向面が接触し、頭部3bの前
端の外周は弧状に面取りされ、前端面はシールド2の前
端面よりも僅かに突き出ている。The rear face of the outer periphery of the head 3b of the movable shield 3 is in contact with the opposing surface of the front end of each contact 4, the outer periphery of the front end of the head 3b is chamfered in an arc shape, and the front end face is the front end of the shield 2. It protrudes slightly from the surface.
【0031】接続導体11の背面に添設された後部シール
ド17は、略半球状で、中央部の左右に対して後部から座
ぐり穴17aが形成され、この座ぐり穴に後方から挿入さ
れたなべ小ねじを介して、接続導体11に固定されてい
る。The rear shield 17 attached to the back of the connecting conductor 11 is substantially hemispherical, and has a counterbore 17a formed from the rear to the left and right of the center, and a pan inserted into the counterbore from the rear. It is fixed to the connection conductor 11 via a small screw.
【0032】後部シールド17の中心には、可動シールド
3の後述する退避動作によって軸部3aの後部が嵌合す
る貫通穴が形成されている。さらに、前面の上下には、
ボルト12の頭部が遊嵌する座ぐり穴が形成されている。At the center of the rear shield 17, there is formed a through hole into which the rear portion of the shaft portion 3a is fitted by the retreat operation of the movable shield 3 described later. In addition, above and below the front,
A counterbore hole into which the head of the bolt 12 fits loosely is formed.
【0033】このように可動シールド3が挿入された主
回路断路器においては、図3で示した避雷器の断路棒10
が矢印Aで示すように後方に押され、この後端が各接触
子4の対向面に嵌合すると、可動シールド3も矢印Bに
示すように後方に押されて、復帰スプリング5は圧縮さ
れ頭部3bは鎖線で示すように後退し、軸部3aの後部
は後部シールド17の貫通穴に退避する。In the main circuit disconnecting device into which the movable shield 3 is inserted, the disconnecting rod 10 of the lightning arrester shown in FIG.
Is pushed rearward as shown by arrow A, and when this rear end is fitted to the opposing surface of each contact 4, the movable shield 3 is also pushed rearward as shown by arrow B, and the return spring 5 is compressed. The head 3b retreats as shown by a chain line, and the rear part of the shaft 3a retreats into a through hole of the rear shield 17.
【0034】また、断路棒10が引き抜かれて、可動シー
ルド3の頭部3bが各接触子4の対向面に嵌合すると、
シールド2の前端面より僅かに前方に突き出た可動シー
ルド3の前端面によって、シールド2の前端の貫通穴の
内周を含む主回路断路器の前端の周りの絶縁ガスの空間
の電界強度が緩和される。When the disconnecting rod 10 is pulled out and the head 3b of the movable shield 3 is fitted to the opposing surface of each contact 4,
The front end face of the movable shield 3 projecting slightly forward from the front end face of the shield 2 alleviates the electric field strength of the space of the insulating gas around the front end of the main circuit disconnector including the inner periphery of the through hole at the front end of the shield 2. Is done.
【0035】したがって、シールド2の外径や奥行きを
増やすことなく、主回路断路器の前面近傍の絶縁ガス雰
囲気の電界強度を緩和することができるので、この主回
路断路器の前方の耐電圧特性の低下を防ぐことができ、
この主回路断路器を組み込んだガス絶縁金属閉鎖形スイ
ッチギヤの外形の増加を防ぎ、この外形の増加に伴う設
置床面積の拡大を防ぐこともできる。Accordingly, the electric field strength of the insulating gas atmosphere near the front surface of the main circuit disconnector can be reduced without increasing the outer diameter and depth of the shield 2, so that the withstand voltage characteristics in front of the main circuit disconnector can be reduced. Can be prevented from dropping,
It is possible to prevent an increase in the outer shape of the gas insulated metal closed switchgear incorporating the main circuit disconnector, and to prevent an increase in installation floor area due to the increase in the outer shape.
【0036】なお、上記実施形態において、可動シール
ド3の頭部3bの前面は、平坦面としたが、シールド2
の前端外周の曲面2Rと同様の曲面3Rとすることによ
り、電界緩和効果を更に上げることができる。In the above embodiment, the front surface of the head 3b of the movable shield 3 is a flat surface.
By using a curved surface 3R similar to the curved surface 2R on the outer periphery of the front end of the above, the electric field relaxation effect can be further enhanced.
【0037】次に、図2は、本発明の主回路断路器の第
2の実施形態を示す図で、第1の実施形態で示した図1
に対応し、特に請求項3に対応する図である。図2にお
いて、第1の実施形態で示した図1と異なるところは、
断路棒10と接続導体11との接続構造で、図1で示した接
触子4やコイルばね6の代りに、接触板9が接触台8の
前端内周に挿入されている。Next, FIG. 2 is a view showing a second embodiment of the main circuit disconnector of the present invention, and FIG. 1 shown in the first embodiment.
FIG. 4 is a diagram corresponding to FIG. 2 differs from FIG. 1 shown in the first embodiment in that:
In the connection structure between the disconnecting rod 10 and the connection conductor 11, a contact plate 9 is inserted into the inner periphery of the front end of the contact base 8 instead of the contact 4 and the coil spring 6 shown in FIG.
【0038】すなわち、この接触台8は、前端の外面が
図1で示したシールド2の前端外周に形成された曲面2
Rとほぼ同一の曲面8Rに加工され、中心部には、可動
シールド3が遊嵌する凹部8aが形成されている。この
凹部8aの底部には、可動シールド3Bの軸部3aが貫
通する貫通穴とともに凸部8cが形成されている。That is, the contact table 8 has a curved surface 2 formed on the outer periphery of the front end of the shield 2 shown in FIG.
A curved surface 8R substantially the same as R is formed, and a concave portion 8a into which the movable shield 3 is loosely fitted is formed at the center. At the bottom of the concave portion 8a, a convex portion 8c is formed together with a through hole through which the shaft portion 3a of the movable shield 3B passes.
【0039】凹部8aの前端には、浅い溝部が環状に形
成され、この溝部には、帯板状のベリリウム銅板から製
作され両面に弧状の凸部がプレス加工で交互に形成され
銀めっきされた接触板9が挿入され、この接触板9の外
面側の凸部は、接触台8に形成された溝部の底面に接触
し、内周側に形成された凸部は、可動シールド3Bの頭
部の外周に接触している。At the front end of the concave portion 8a, a shallow groove is formed in an annular shape, and the groove is formed from a strip-shaped beryllium copper plate, and arc-shaped protrusions are alternately formed on both surfaces by press working and silver-plated. The contact plate 9 is inserted, and the convex portion on the outer surface side of the contact plate 9 contacts the bottom surface of the groove formed in the contact base 8, and the convex portion formed on the inner peripheral side is the head of the movable shield 3B. Is in contact with the outer periphery of
【0040】このように接触台8が構成され接触板9と
可動シールド3が挿入された主回路断路器においても、
避雷器の断路棒10が矢印Aで示すように後方に押され、
この後端が接触板9の内周面に嵌合すると、可動シール
ド3も矢印Bに示すように後方に押されて、復帰スプリ
ング5は圧縮され第1の実施形態で示した破線で示すよ
うに退避する。In the main circuit disconnector in which the contact base 8 is configured as described above and the contact plate 9 and the movable shield 3 are inserted,
The disconnecting rod 10 of the lightning arrester is pushed backward as shown by arrow A,
When this rear end is fitted to the inner peripheral surface of the contact plate 9, the movable shield 3 is also pushed rearward as shown by the arrow B, and the return spring 5 is compressed, as shown by the broken line shown in the first embodiment. Evacuate to
【0041】また、断路棒10が引き抜かれて、可動シー
ルド3の頭部3bが接触板9の内周面に嵌合すると、接
触台8の前端面より僅かに前方に突き出た可動シールド
3の前端面によって、接触台8の前端の凹部の内周を含
む主回路断路器の前端の周りの絶縁ガスの電界強度が緩
和される。When the disconnecting rod 10 is pulled out and the head 3b of the movable shield 3 is fitted on the inner peripheral surface of the contact plate 9, the movable shield 3 protrudes slightly forward from the front end surface of the contact base 8. The front end surface alleviates the electric field strength of the insulating gas around the front end of the main circuit disconnector including the inner periphery of the recess at the front end of the contact base 8.
【0042】したがって、接触台8の外径や奥行きを従
来の技術で示した図4で示したシールド2と比べて増や
すことなく、主回路断路器の前面近傍の絶縁ガス雰囲気
の電界強度を緩和することができるので、この主回路断
路器の前方の断路棒との間の耐電圧特性の低下を防ぐこ
とができ、この主回路断路器を組み込んだガス絶縁金属
閉鎖形スイッチギヤの外形の増加を防ぎ、この外形の増
加に伴う設置床面積の拡大を防ぐこともできる。Accordingly, the electric field strength of the insulating gas atmosphere near the front surface of the main circuit disconnector is reduced without increasing the outer diameter and depth of the contact base 8 as compared with the shield 2 shown in FIG. Can prevent a decrease in withstand voltage characteristics between the main circuit disconnector and the disconnecting rod in front of the main circuit disconnector, and increase the outer shape of the gas insulated metal closed switchgear incorporating the main circuit disconnector. Can be prevented, and the installation floor area can be prevented from increasing due to the increase in the outer shape.
【0043】なお、上記実施形態において、断路棒10
は、避雷器を接続し試験のために断路するための断路棒
の場合で説明したが、避雷器に組み込まれた断路棒に限
らず、例えば、主回路を断路する断路器でも、また、こ
の主回路断路器に組み込まれた接地断路器でも、断路棒
が軸方向に挿脱されて高圧の主回路を入切する断路器で
あれば全く同様に適用することができる。In the above embodiment, the disconnecting rod 10
Has been described in the case of the disconnecting rod for connecting the lightning arrester and disconnecting for the test, but it is not limited to the disconnecting rod incorporated in the lightning arrester, for example, a disconnector that disconnects the main circuit, The same applies to the grounding disconnector incorporated in the disconnector as long as the disconnecting rod is inserted and removed in the axial direction to switch on and off the high-voltage main circuit.
【0044】[0044]
【発明の効果】以上、本発明によれば、軸方向に操作さ
れる断路棒の先端が挿脱される接触部を主回路導体に固
定される導体に装着し、断路棒の挿入動作で接触部から
退避し断路棒の脱動作で復帰して凹部の開口部を塞ぐ可
動シールドをシールドの凹部に遊嵌して、断路棒の脱動
作に伴って生じるシールドの凹部の開口端の空間の電界
強度の増加を、開口端を塞ぐ可動シールドで解消したの
で、絶縁占有空間を増やすことなく、耐電圧特性を維持
することのできる主回路断路器を得ることができる。As described above, according to the present invention, the contact portion into which the tip of the disconnecting rod operated in the axial direction is inserted / removed is attached to the conductor fixed to the main circuit conductor, and the contact is made by the insertion operation of the disconnecting rod. The movable shield that retreats from the section and returns with the disconnection of the disconnecting rod and closes the opening of the concave is loosely fitted into the concave of the shield, and the electric field in the space at the opening end of the concave of the shield generated with the detachment of the disconnecting rod Since the increase in strength is eliminated by the movable shield closing the open end, a main circuit disconnector capable of maintaining the withstand voltage characteristics without increasing the insulation occupied space can be obtained.
【図1】本発明の主回路断路器の第1の実施形態を示す
断面図。FIG. 1 is a sectional view showing a first embodiment of a main circuit disconnector of the present invention.
【図2】本発明の主回路断路器の第2の実施形態を示す
断面図。FIG. 2 is a sectional view showing a second embodiment of the main circuit disconnector of the present invention.
【図3】従来の主回路断路器が組み込まれた金属閉鎖形
スイッチギヤの一例を示す右側面図。FIG. 3 is a right side view showing an example of a metal-closed switchgear in which a conventional main circuit disconnector is incorporated.
【図4】図3のC部拡大詳細図。FIG. 4 is an enlarged detailed view of a portion C in FIG. 3;
1…接触子台、2…シールド、3…可動シールド、4…
接触子、5…復帰スプリング、6…コイルばね、7…間
隔環、8…接触台、9…接触板、10…断路棒、11…接続
導体、12…六角ボルト、16…ばねピン、17…後部シール
ド。DESCRIPTION OF SYMBOLS 1 ... Contact stand, 2 ... Shield, 3 ... Movable shield, 4 ...
Contact element, 5 ... Return spring, 6 ... Coil spring, 7 ... Space ring, 8 ... Contact table, 9 ... Contact plate, 10 ... Disconnect rod, 11 ... Connection conductor, 12 ... Hex bolt, 16 ... Spring pin, 17 ... Rear shield.
Claims (4)
される接触部が設けられこの接触部の後部に凹部が形成
され主回路導体に固定される導体と、前記凹部に遊嵌さ
れ前記断路棒の挿入動作で前記接触部から退避し前記断
路棒の脱動作で復帰して前記凹部の開口部を塞ぐ可動シ
ールドとを備えた主回路断路器。1. A contact portion into which the tip of a disconnecting rod operated in the axial direction is inserted / removed, a recess formed in a rear portion of the contact portion, a conductor fixed to a main circuit conductor, and a loose fit in the recess. And a movable shield that retreats from the contact portion by the operation of inserting the disconnecting rod and returns by the disengaging operation of the disconnecting rod to close the opening of the concave portion.
配置される接触子とし、前記シールドを、前記接触子台
と前記接触子の外周に設けられる断面U字状のシールド
筒としたことを特徴とする請求項1に記載の主回路断路
器。2. The contact portion is a contact arranged annularly on the outer periphery of a contact base, and the shield comprises a shield tube having a U-shaped section provided on the outer periphery of the contact base and the contact. The main circuit disconnector according to claim 1, wherein:
面コ字状の接触台で構成し、前記接触部を前記接触台の
断面コ字状の凹部に装着される接触板としたことを特徴
とする請求項1に記載の主回路断路器。3. The method according to claim 2, wherein the shield and the conductor are formed as a substantially hemispherical contact block having a U-shaped cross section, and the contact portion is a contact plate mounted in a concave portion having a U-shaped cross section of the contact table. The main circuit disconnector according to claim 1, characterized in that:
ルドの後部が退避する後部シールドを設けたことを特徴
とする請求項1乃至請求項3に記載の主回路断路器。4. The main circuit disconnector according to claim 1, wherein a rear shield in which a rear portion of the movable shield is retracted is provided behind the main circuit conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11895997A JP3587423B2 (en) | 1997-05-09 | 1997-05-09 | Main circuit disconnector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11895997A JP3587423B2 (en) | 1997-05-09 | 1997-05-09 | Main circuit disconnector |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH10308143A true JPH10308143A (en) | 1998-11-17 |
JP3587423B2 JP3587423B2 (en) | 2004-11-10 |
Family
ID=14749519
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP11895997A Expired - Fee Related JP3587423B2 (en) | 1997-05-09 | 1997-05-09 | Main circuit disconnector |
Country Status (1)
Country | Link |
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JP (1) | JP3587423B2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011160637A (en) * | 2010-02-04 | 2011-08-18 | Japan Ae Power Systems Corp | Gas insulated switchgear |
DE102010062343A1 (en) | 2010-12-02 | 2012-06-06 | Siemens Aktiengesellschaft | Electric contact arrangement |
CN105702517A (en) * | 2016-03-31 | 2016-06-22 | 浙江奔电气有限公司 | Moving contact |
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JPS57173234U (en) * | 1981-04-24 | 1982-11-01 | ||
JPS5828123A (en) * | 1981-08-12 | 1983-02-19 | 株式会社日立製作所 | Buffer type breaker |
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JPS60124830U (en) * | 1984-02-01 | 1985-08-22 | 株式会社明電舎 | Disconnector with grounding device |
JPS61233915A (en) * | 1985-04-04 | 1986-10-18 | 三菱電機株式会社 | Circuit breaker |
JPH0214741U (en) * | 1988-07-15 | 1990-01-30 | ||
JPH06139882A (en) * | 1992-10-21 | 1994-05-20 | Mitsubishi Electric Corp | Witching device |
JPH06508714A (en) * | 1991-07-09 | 1994-09-29 | シーメンス アクチエンゲゼルシヤフト | Disconnector with main switching contact and auxiliary contact |
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1997
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JPS57173234U (en) * | 1981-04-24 | 1982-11-01 | ||
JPS5828123A (en) * | 1981-08-12 | 1983-02-19 | 株式会社日立製作所 | Buffer type breaker |
JPS5897227A (en) * | 1981-12-04 | 1983-06-09 | 株式会社日立製作所 | Sf6 gas breaker |
JPS58164149U (en) * | 1982-04-26 | 1983-11-01 | 株式会社明電舎 | disconnect device |
JPS609304A (en) * | 1983-06-27 | 1985-01-18 | 株式会社日立製作所 | Main bus unit of gas insulated switching device |
JPS60124830U (en) * | 1984-02-01 | 1985-08-22 | 株式会社明電舎 | Disconnector with grounding device |
JPS61233915A (en) * | 1985-04-04 | 1986-10-18 | 三菱電機株式会社 | Circuit breaker |
JPH0214741U (en) * | 1988-07-15 | 1990-01-30 | ||
JPH06508714A (en) * | 1991-07-09 | 1994-09-29 | シーメンス アクチエンゲゼルシヤフト | Disconnector with main switching contact and auxiliary contact |
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Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011160637A (en) * | 2010-02-04 | 2011-08-18 | Japan Ae Power Systems Corp | Gas insulated switchgear |
DE102010062343A1 (en) | 2010-12-02 | 2012-06-06 | Siemens Aktiengesellschaft | Electric contact arrangement |
WO2012072410A1 (en) | 2010-12-02 | 2012-06-07 | Siemens Aktiengesellschaft | Electrical contact arrangement |
US9524837B2 (en) | 2010-12-02 | 2016-12-20 | Siemens Aktiengesellschaft | Electrical contact arrangement |
CN105702517A (en) * | 2016-03-31 | 2016-06-22 | 浙江奔电气有限公司 | Moving contact |
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