JPH02168519A - Gas insulation circuit breaker - Google Patents
Gas insulation circuit breakerInfo
- Publication number
- JPH02168519A JPH02168519A JP32140788A JP32140788A JPH02168519A JP H02168519 A JPH02168519 A JP H02168519A JP 32140788 A JP32140788 A JP 32140788A JP 32140788 A JP32140788 A JP 32140788A JP H02168519 A JPH02168519 A JP H02168519A
- Authority
- JP
- Japan
- Prior art keywords
- electric field
- contact
- field concentration
- circuit breaker
- fixed
- 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
- 238000009413 insulation Methods 0.000 title abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 9
- 230000005684 electric field Effects 0.000 abstract description 15
- 239000003822 epoxy resin Substances 0.000 abstract description 2
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 238000010276 construction Methods 0.000 abstract 1
- 239000004020 conductor Substances 0.000 description 3
- 239000012212 insulator Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000002040 relaxant effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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
- H01H33/02—Details
- H01H33/24—Means for preventing discharge to non-current-carrying parts, e.g. using corona ring
Landscapes
- Arc-Extinguishing Devices That Are Switches (AREA)
Abstract
Description
【発明の詳細な説明】
Ａ、産業上の利用分野
本発明は、コンタクトの近傍の電界集由を緩和すること
により、半径方向及び軸心方向の縮小化を図ったガス絶
縁開閉装置に関する。DETAILED DESCRIPTION OF THE INVENTION A. Field of Industrial Application The present invention relates to a gas insulated switchgear which is downsized in the radial and axial directions by relaxing electric field concentration near contacts.
Ｂ０発明の概要
本発明は、相対的に接触・離反可能な固定コンタクト、
可動コンタクトと、これらを個別に囲繞する筒状の一対
の外部シールドと、一対の外部シールド間に設けた絶縁
筒とでガス遮断器を構成したガス絶縁開閉装置において
、
絶縁筒の内周面又は外周面の少なくとも一方を、高抵抗
体物質で被うことにより、
コンタクト近傍の電界集中を緩和して、半径方向及び軸
心方向の縮小化を図ったものである。B0 Summary of the Invention The present invention provides fixed contacts that can be relatively contacted and separated;
In a gas insulated switchgear in which a gas circuit breaker is configured by a movable contact, a pair of cylindrical external shields that individually surround these, and an insulating tube provided between the pair of external shields, the inner peripheral surface of the insulating tube or By covering at least one of the outer circumferential surfaces with a high-resistance material, electric field concentration near the contact is alleviated, thereby reducing the size in the radial and axial directions.
Ｃ１従来の技術
開閉器を縦置きにしてブッシング内へ収容する縦置形遮
断装置は重心が高いために地震に弱いという欠点がある
。そのため、開閉器を横置きにしてタンク内に収容した
タンク形遮断装置が開発された。C1 Prior Art A vertically placed interrupting device in which a switch is placed vertically and housed in a bushing has a drawback of being vulnerable to earthquakes due to its high center of gravity. Therefore, a tank-type disconnection device was developed in which the switch was placed horizontally and housed in a tank.
タンク形開閉装置の構成を第２図に示す。横置きにした
金属製のタンク６内に開閉器としてのガス遮断器ｌが収
容される。即ち、タンク６の両端を塞ぐ端板１０ａ、Ｉ
Ｏｂに一対の支持碍管５ａ。The configuration of the tank-type switchgear is shown in Figure 2. A gas circuit breaker l as a switch is housed in a horizontally placed metal tank 6. That is, the end plates 10a and I that close both ends of the tank 6
A pair of support insulator tubes 5a are provided in Ob.
５ｂが取り付けられ、支持碍管５ａには支持金具４ａを
介してガス遮断器ｌの一端が支持される一方、支持碍管
５ｂには支持金具４ｂを介してガス遮断器ｌの他端が支
持される。端板１０ａには操作機構１１が取り付けられ
、絶縁ロッド１２を介して可動ロッド１３に連結される
。5b is attached, and one end of the gas circuit breaker l is supported on the support insulator tube 5a via the support fitting 4a, while the other end of the gas circuit breaker l is supported on the support insulator tube 5b via the support fitting 4b. . An operating mechanism 11 is attached to the end plate 10a and connected to a movable rod 13 via an insulating rod 12.
タンク６の両端近傍には鉛直上方へ向かって立ち上がる
一対のブッシング７ａ、７ｂが設けられ、ブッシング７
ａ、７ｂ内には導体８ａ、８ｂが設けられる。導体８ａ
、８ｂの下端は、支持金具４ａ、４ｂを介して可動ロッ
ド１３．固定ロッド１４に接続される。また、導体８ａ
、８ｂの上端は主回路端子９ａ、９ｂに接続される。な
お、３ａ。A pair of bushings 7a and 7b rising vertically upward is provided near both ends of the tank 6.
Conductors 8a and 8b are provided within a and 7b. Conductor 8a
, 8b are connected to the movable rod 13. through support fittings 4a, 4b. It is connected to the fixed rod 14. In addition, the conductor 8a
, 8b are connected to main circuit terminals 9a, 9b. In addition, 3a.
３ｂは防振ゴムである。3b is a vibration-proof rubber.
ガス遮断器Ｉの内部は第３図に示すように構成される。The inside of the gas circuit breaker I is constructed as shown in FIG.
即ち、固定ロッド１４には固定アーキングコンタクト２
５と固定アーキングコンタクト２５を囲繞する固定主コ
ンタクト１５とが固着される一方、可動ロッド１３には
可動アーキングコンタクト１６と可動主コンタクト１７
とが固着される。そして、バッファ室２６からの絶縁ガ
スをアークに吹きつけて消弧させるための放出路１８を
形成するため、可動アーキングコンタクト１６と可動主
コンタクト！７との間に絶縁ノズル１９の基端部が結合
される。そして、固定主コンタクト１５を囲繞する筒状
の外シールド２７と、可動主コンタクト１７を囲繞する
筒状の外シールド２８とが設けられ、外シールド２７．
２８間には筒状の絶縁筒２９が固着される。That is, the fixed arcing contact 2 is attached to the fixed rod 14.
5 and a fixed main contact 15 surrounding the fixed arcing contact 25 are fixed, while a movable arcing contact 16 and a movable main contact 17 are fixed to the movable rod 13.
and are fixed. In order to form a discharge path 18 for extinguishing the arc by blowing insulating gas from the buffer chamber 26 onto the arc, the movable arcing contact 16 and the movable main contact! A base end portion of the insulating nozzle 19 is coupled between the insulating nozzle 19 and the insulating nozzle 7 . A cylindrical outer shield 27 surrounding the fixed main contact 15 and a cylindrical outer shield 28 surrounding the movable main contact 17 are provided.
A cylindrical insulating tube 29 is fixed between the holes 28 .
遮断時に、可動アーキングコンタクト１６が固定アーキ
ングコンタクト２５から離れる際にアークが生じるが、
このアークは、図示しないピストンによってバッファ室
２６から押し出されたあと放出路１８を通って吹きつけ
られる絶縁ガスによって消弧される。When the movable arcing contact 16 separates from the fixed arcing contact 25 during interruption, an arc is generated.
This arc is extinguished by an insulating gas that is pushed out of the buffer chamber 26 by a piston (not shown) and then blown through the discharge path 18.
Ｄ１発明が解決しようとする課題
ところが、開極状態では第３図に示すように固定主コン
タクト１５の先端部分Ａで電界が集中し、耐電圧を得る
ためには電極間距離あるいはタンク６と固定主コンタク
ト１５との距離を大きくする必要がある。また、電界集
中を緩和するため、コンタクトの角部の曲率を大きくし
て電界分布の適正化を図って対処してきたが、これも限
界に達している。D1 Problem to be Solved by the Invention However, in the open state, the electric field is concentrated at the tip A of the fixed main contact 15 as shown in FIG. It is necessary to increase the distance from the main contact 15. In addition, in order to alleviate electric field concentration, efforts have been made to increase the curvature of the corners of the contacts to optimize the electric field distribution, but this approach has also reached its limit.
一方、ガス遮断器はタンク形開閉装置の最も重要な構成
機器であって他の機器に比べて多くのスペースを占める
ため、ガス遮断器の小形化は、三相−括彩のタンク形開
閉装置を小形化するための重要なポイントである。On the other hand, gas circuit breakers are the most important components of tank-type switchgear, and they occupy more space than other devices. This is an important point for downsizing.
そこで本発明は、斯かる課題を解決したガス絶縁開閉装
置を提供することを目的とする。Therefore, an object of the present invention is to provide a gas insulated switchgear that solves the above problem.
Ｅ０課題を解決するための手段
斯かる目的を達成するための本発明の構成は、絶縁ガス
中にガス遮断器を設け、ガス遮断器を、相対的に接触・
離反可能な固定コンタクト、可動コンタクトと、固定コ
ンタクト及び可動コンタクトを個別に囲繞する筒状の一
対の外部シールドと、一対の外部シールド間に設けた絶
縁筒とで構成したガス絶縁開閉装置において、
絶縁筒の内周面又は外周面の少なくとも一方を、高抵抗
体物質で被ったことを特徴とする。Means for Solving the E0 Problem The structure of the present invention for achieving the above object is to provide a gas circuit breaker in an insulating gas, and to connect the gas circuit breaker to a relative contact.
In a gas-insulated switchgear consisting of a fixed contact and a movable contact that can be separated, a pair of cylindrical external shields that individually surround the fixed contact and the movable contact, and an insulating tube provided between the pair of external shields, the insulation It is characterized in that at least one of the inner circumferential surface or outer circumferential surface of the cylinder is covered with a high-resistance material.
Ｆ９作用
絶縁筒の外周面又は内周面の少なくとも一方を高抵抗体
物質で被ったので、隣り合う等電位線は略等間隔な状態
で絶縁筒を貫通する。Since at least one of the outer circumferential surface or the inner circumferential surface of the F9 action insulating tube is covered with a high-resistance material, adjacent equipotential lines penetrate the insulating tube at approximately equal intervals.
このため、可動コンタクト、固定コンタクトの先端部近
傍の等電位線どうしも他の部分と略同じ間隔を保持し、
この部分での電界集中が大幅に緩和される。Therefore, the equipotential lines near the tips of the movable and fixed contacts maintain approximately the same spacing as other parts,
Electric field concentration in this part is significantly alleviated.
Ｇ、実施例
以下、本発明を図面に示す実施例に基づいて詳細に説明
する。なお、本実施例は従来のガス絶縁開閉装置の一部
を改良したものなので、従来と同一部分には同一符号を
付して説明を省略し、異なる部分のみを説明する。G. Examples Hereinafter, the present invention will be explained in detail based on examples shown in the drawings. Note that this embodiment is an improvement on a part of the conventional gas insulated switchgear, so the same parts as the conventional gas insulated switchgear are given the same reference numerals, the explanation is omitted, and only the different parts will be explained.
（ａ）実施例の構成
本発明によるガス絶縁開閉装置の構成を、第１図に基づ
いて説明する。(a) Structure of Embodiment The structure of a gas insulated switchgear according to the present invention will be explained based on FIG. 1.
図のように、エポキシ樹脂からなる絶縁筒２９の外周面
の全周に亘って高抵抗体物質である半絶縁ゴム２０が貼
着される。As shown in the figure, semi-insulating rubber 20, which is a high-resistance material, is adhered to the entire outer circumferential surface of an insulating tube 29 made of epoxy resin.
なお、絶縁筒２９の内周面を高抵抗体物質で被うように
してもよい。Note that the inner circumferential surface of the insulating cylinder 29 may be covered with a high-resistance material.
（ｂ）実施例の作用
第１図のように絶縁筒２９の外周面に半絶縁ゴム２０を
貼着したので、図のように絶縁筒２９を貫通する等電位
線が略等間隔となる。(b) Function of the Embodiment Since the semi-insulating rubber 20 is attached to the outer peripheral surface of the insulating tube 29 as shown in FIG. 1, the equipotential lines passing through the insulating tube 29 are approximately equally spaced as shown in the figure.
それにより、固定主コンタクト１５の先端部Ａにおいて
も等電位線が先端部から離れ、等電位線の間隔が大きく
なって電界集中が緩和される。また、固定アーキングコ
ンタクト２５の先端部Ｂにおいても同様にして電界集中
が緩和される。このように電界集中が緩和され、電極間
の電位分布が均一になる。As a result, the equipotential lines at the tip A of the fixed main contact 15 also move away from the tip, the interval between the equipotential lines increases, and electric field concentration is alleviated. In addition, electric field concentration is similarly alleviated at the tip portion B of the fixed arcing contact 25. In this way, electric field concentration is relaxed and the potential distribution between the electrodes becomes uniform.
Ｈ０発明の効果
以上の説明かられかるように、本発明によるガス絶縁開
閉装置によれば以下の効果がある。H0 Effects of the invention As can be seen from the above explanation, the gas insulated switchgear according to the invention has the following effects.
（１）絶縁筒の外周面又は内周面の少なくとも一方を高
抵抗、体物質で被ったので、可動コンタクト、固定コン
タクトの先端部近傍の電界集中が緩和される。その結果
、コンタクト及び外部シールドの角部のＲの曲率を小さ
くすることが可能となり、その分だけコンタクト及び外
部シールドの外径寸法を小さくできる。(1) Since at least one of the outer circumferential surface or the inner circumferential surface of the insulating cylinder is covered with a high-resistance material, electric field concentration near the tips of the movable and fixed contacts is alleviated. As a result, it is possible to reduce the curvature of the radius of the corners of the contacts and the outer shield, and the outer diameter dimensions of the contacts and the outer shield can be reduced accordingly.
（２）コンタクトの先端部近傍の電界集中が緩和される
ことで開離距離を小さくすることも可能となり、ガス遮
断器の軸心方向への小形化と、更にはガス遮断器の操作
装置の小形化が図れる。(2) By easing the electric field concentration near the tip of the contact, it becomes possible to reduce the separation distance, making it possible to downsize the gas circuit breaker in the axial direction, and furthermore, to reduce the size of the gas circuit breaker operating device. Can be made smaller.
（３）ガス遮断器を半径方向及び軸心方向へ小さくでき
るので、三相−話形のタンク形開閉装置を一層縮小する
ことが可能となる。(3) Since the gas circuit breaker can be made smaller in the radial and axial directions, it is possible to further downsize the three-phase, channel-type, tank-type switchgear.
第１図、第２図は本発明によるガス絶縁開閉装置の実施
例に係り、第１図はその要部を示す拡大図、第２図はタ
ンク形開閉装置の構成図、第３図は従来のガス遮断器の
要部を示す拡大図である。
■・・・ガス遮断器、１５・・・固定主コンタクト、１
６・・・可動アーキングコンタクト、１７・・・可動主
コンタクト、Ｉ８・・・放出路、１９・・・絶縁ノズル
、２０・・・半絶縁ゴム、２５・・・固定アーキングコ
ンタクト、２６・・・バッファ室、２７．２８・・・外
部シールド、２９・・・絶縁筒。
第２図
タンク形開閉装置の構成図
第１図
ガス遮断器の要部を示す拡大図（本発明）Ｊ ガス遮断
器
１５ 固定主コンタクト
１６・−可動アーキングコノタクト
１７ 可動主コノタクト
１Ｂ 放出路
１９・・絶縁ノズル
２０・半絶縁ゴム
２５ 固定アーキングコノタクト
２６・バッファ室
２８ 外部ノールド1 and 2 relate to an embodiment of the gas insulated switchgear according to the present invention, FIG. 1 is an enlarged view showing the main parts thereof, FIG. 2 is a configuration diagram of a tank type switchgear, and FIG. 3 is a conventional one. FIG. 2 is an enlarged view showing the main parts of the gas circuit breaker. ■... Gas circuit breaker, 15... Fixed main contact, 1
6... Movable arcing contact, 17... Movable main contact, I8... Ejection path, 19... Insulating nozzle, 20... Semi-insulating rubber, 25... Fixed arcing contact, 26... Buffer chamber, 27.28...External shield, 29...Insulating tube. Figure 2: Configuration diagram of tank-type switchgear Figure 1: Enlarged view showing essential parts of gas circuit breaker (present invention) J Gas circuit breaker 15 Fixed main contact 16 - Movable arcing contact 17 Movable main contact 1B Discharge path 19・・Insulating nozzle 20・Semi-insulating rubber 25 Fixed arcing connector 26・Buffer chamber 28 External nozzle
Claims (1)
相対的に接触・離反可能な固定コンタクト、可動コンタ
クトと、固定コンタクト及び可動コンタクトを個別に囲
繞する筒状の一対の外部シールドと、一対の外部シール
ド間に設けた絶縁筒とで構成したガス絶縁開閉装置にお
いて、 絶縁筒の内周面又は外周面の少なくとも一方を、高抵抗
体物質で被ったことを特徴とするガス絶縁開閉装置。(1) Install a gas circuit breaker in the insulating gas,
A gas-insulated device consisting of a fixed contact and a movable contact that can be brought into and out of relative contact, a pair of cylindrical external shields that individually surround the fixed contact and the movable contact, and an insulating cylinder provided between the pair of external shields. A gas insulated switchgear characterized in that at least one of the inner circumferential surface or the outer circumferential surface of an insulating cylinder is covered with a high-resistance material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32140788A JPH02168519A (en) | 1988-12-20 | 1988-12-20 | Gas insulation circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32140788A JPH02168519A (en) | 1988-12-20 | 1988-12-20 | Gas insulation circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02168519A true JPH02168519A (en) | 1990-06-28 |
Family
ID=18132207
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32140788A Pending JPH02168519A (en) | 1988-12-20 | 1988-12-20 | Gas insulation circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02168519A (en) |
-
1988
- 1988-12-20 JP JP32140788A patent/JPH02168519A/en active Pending
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