JPS6221207B2 - - Google Patents
Info
- Publication number
- JPS6221207B2 JPS6221207B2 JP55069928A JP6992880A JPS6221207B2 JP S6221207 B2 JPS6221207 B2 JP S6221207B2 JP 55069928 A JP55069928 A JP 55069928A JP 6992880 A JP6992880 A JP 6992880A JP S6221207 B2 JPS6221207 B2 JP S6221207B2
- Authority
- JP
- Japan
- Prior art keywords
- insulating
- fixed
- plate
- insulating tube
- movable
- 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.)
- Expired
Links
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000853 adhesive Substances 0.000 claims description 3
- 230000001070 adhesive effect Effects 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 238000009413 insulation Methods 0.000 description 12
- 239000002184 metal Substances 0.000 description 5
- 239000012212 insulator Substances 0.000 description 4
- 238000004026 adhesive bonding Methods 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 238000005219 brazing Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【発明の詳細な説明】
本発明は高圧電磁接触器や同開閉器の主接触部
に使用される真空バルブの外被絶縁構造に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a jacket insulation structure of a vacuum valve used in a main contact portion of a high-voltage electromagnetic contactor or a switch.
真空バルブは高度に排気された真空室内に固定
電極、可動電極、アークシールドなどが収められ
てある。その従来の一例の組立断面図を第１図に
示す。図において１は真空バルブの可動軸、２は
同じく固定軸、３は可動軸１の先端に取り付けら
れた可動接点、４は同じく固定軸２の先端に取り
付けられた固定接点である。５は可動接点３や固
定接点４を収納し絶縁する真空容器で主としてガ
ラス又はアルミナセラミツクスなどの材料を使用
した円筒状の構造である。６は可動接点側端板、
７は金属ベローズ、８は固定接点側端板である。
９は接点の開閉時アークにより発生する金属蒸気
が絶縁真空容器５の内面に付着して内部の絶縁耐
力を劣化させることを防止するアークシールドで
ある。この様に構成された真空バルブの内部は高
真空度に維持されているため絶縁特性に秀れ例え
ば交流6.6kV以下の電圧であるなら数mmの絶縁距
離で十分である。しかし、絶縁真空容器５の外周
は大気中であるので、その円筒形絶縁物の軸方向
外気表面沿面距離で使用電圧が定まり、その値は
例えば交流3.3kVでは50mm、交流6.6kVでは90mm
程度の長さが必要である。 A vacuum valve consists of a fixed electrode, a movable electrode, an arc shield, etc. housed in a highly evacuated vacuum chamber. An assembled sectional view of one conventional example is shown in FIG. In the figure, 1 is a movable shaft of the vacuum valve, 2 is also a fixed shaft, 3 is a movable contact attached to the tip of the movable shaft 1, and 4 is a fixed contact similarly attached to the tip of the fixed shaft 2. Reference numeral 5 denotes a vacuum container for accommodating and insulating the movable contact 3 and fixed contact 4, and has a cylindrical structure mainly made of glass or alumina ceramics. 6 is the movable contact side end plate;
7 is a metal bellows, and 8 is an end plate on the fixed contact side.
Reference numeral 9 denotes an arc shield that prevents metal vapor generated by an arc during opening and closing of the contacts from adhering to the inner surface of the insulating vacuum container 5 and degrading the internal dielectric strength. The interior of the vacuum valve configured in this manner is maintained at a high degree of vacuum, so it has excellent insulation properties, and for example, if the voltage is 6.6 kV or less AC, an insulation distance of several mm is sufficient. However, since the outer periphery of the insulating vacuum container 5 is in the atmosphere, the working voltage is determined by the creepage distance of the outside air surface in the axial direction of the cylindrical insulator, and the value is, for example, 50 mm for 3.3 kV AC and 90 mm for 6.6 kV AC.
A certain length is required.
以上のように真空バルブの大きさは円筒状の絶
縁真空容器５の軸方向外気表面長さで決まるた
め、交流6.6kV回路用の真空バルブと交流3.3kV
用のそれとを共用化できるようにして経済性を向
上させようとすると大きい方の交流6.6kV用のも
のを使用しなくてはならず、交流3.3kV用に使用
するには大きくなり、小形化、経済性の点から不
利となる。 As mentioned above, the size of the vacuum valve is determined by the length of the outside air surface in the axial direction of the cylindrical insulating vacuum container 5, so the vacuum valve for the 6.6 kV AC circuit and the 3.3 kV AC circuit
If you want to improve economic efficiency by making it possible to share the same with the one for AC, you will have to use the larger one for AC 6.6kV, and if you use it for AC 3.3kV, it will be too large, and you will have to downsize. , which is disadvantageous from an economic point of view.
従つて本発明は外被絶縁構造を改良して異種高
電圧に共通に適用できる様にした真空バルブを得
ることを目的とする。 Therefore, an object of the present invention is to provide a vacuum valve which can be commonly applied to different types of high voltages by improving the jacket insulation structure.
以下本発明による真空バルブの一実施例につい
て第２図を参照しながら詳細に説明する。第２図
の組立断面図において第１図と同一部品には同一
符号を付して説明を省略する。１０は従来と同様
な絶縁物から作られ、コツプ状でかつ軸方向中間
部で内径が段付になつている絶縁管である。その
コツプの底に対応する部分で直接可動軸１を滑動
自在に保持する。中間部の内径段付部にはリング
状の平板形絶縁板１１をはめ込む。平板形絶縁板
１１は絶縁物から作られたリング状の絶縁板で内
縁部は接点間の絶縁筒として機能し、その板状の
内面側では可動接点側端板６、それと接合した金
属ベローズ７、更に金属ベローズ７の先端は可動
軸１に接合されている。同絶縁板１１の板状の外
面側は固定側端板８を介して固定軸２と接合され
ており、これら全体の組立は例えば真空炉中でロ
ー付けして行なわれる。１２はリング状の絶縁栓
で、絶縁管１０の内径段付き部にはめ込まれた平
板形絶縁板１１を外側から抑え、絶縁管１０に接
着又はネジ込み等で固定されている。絶縁管１０
の段付き部内径と平板形絶縁板１１の外径と絶縁
栓１２の一端面で構成された空隙に液状又は接着
性のある絶縁物１３を充填し、平板形絶縁物１１
と絶縁管１０との境界面の絶縁を完全にする。 An embodiment of the vacuum valve according to the present invention will be described in detail below with reference to FIG. In the assembled sectional view of FIG. 2, parts that are the same as those in FIG. Reference numeral 10 denotes an insulating tube made of the same insulating material as in the past, which is shaped like a pot and whose inner diameter is stepped at the middle portion in the axial direction. The movable shaft 1 is directly slidably held at a portion corresponding to the bottom of the tip. A ring-shaped flat insulating plate 11 is fitted into the stepped inner diameter portion of the intermediate portion. The flat insulating plate 11 is a ring-shaped insulating plate made of an insulating material, and the inner edge functions as an insulating cylinder between the contacts, and the inner edge of the plate-shaped insulating plate 11 has a movable contact side end plate 6 and a metal bellows 7 connected thereto. Furthermore, the tip of the metal bellows 7 is joined to the movable shaft 1. The plate-shaped outer surface of the insulating plate 11 is joined to the fixed shaft 2 via the fixed end plate 8, and the entire assembly is carried out, for example, by brazing in a vacuum furnace. Reference numeral 12 denotes a ring-shaped insulating plug, which suppresses the flat insulating plate 11 fitted into the stepped inner diameter portion of the insulating tube 10 from the outside, and is fixed to the insulating tube 10 by gluing or screwing. Insulation tube 10
A gap formed by the inner diameter of the stepped part, the outer diameter of the flat insulating plate 11, and one end surface of the insulating plug 12 is filled with a liquid or adhesive insulator 13, and the flat insulating plate 11 is
Complete insulation at the interface between the insulation tube 10 and the insulation tube 10 is achieved.
以上の様に構成した本発明による真空バルブで
はその大気側の極間絶縁は絶縁管１０のコツプの
底に当る大気側の端面における放射方向沿面距離
と、同じく絶縁管１０の大気側の軸方向沿面距離
と平板形絶縁板１１の大気側沿面距離との和にな
り、従来の如く単に絶縁真空容器５の軸方向外気
表面沿面距離のみに比べ有効距離が非常に長くな
る。これを第２図を参照して説明すると、本発明
による真空バルブの大気側沿面絶縁距離L1は以
下のようになる。 In the vacuum valve according to the present invention configured as described above, the insulation between the electrodes on the atmosphere side is determined by the creepage distance in the radial direction at the end surface on the atmosphere side corresponding to the bottom of the tip of the insulating tube 10, and in the axial direction of the insulating tube 10 on the atmosphere side. This is the sum of the creepage distance and the atmosphere side creepage distance of the flat insulating plate 11, and the effective distance is much longer than just the creepage distance of the outside air surface in the axial direction of the insulating vacuum vessel 5 as in the conventional case. To explain this with reference to FIG. 2, the creepage insulation distance L 1 on the atmosphere side of the vacuum valve according to the present invention is as follows.
L1＝ｄ＋ｅ＋ｆ＋ｇ＋ｈ＋ｉ＋ｋ
これに対して本発明による真空バルブと略同じ
軸方向長さを有する従来形の真空バルブの沿面絶
縁距離L2に相当する距離を第２図中に示すと図
中ａ，ｂ，ｃを加えた程度のものであり、すなわ
ち以下の値である。 L 1 = d + e + f + g + h + i + k On the other hand, the distances corresponding to the creepage insulation distance L 2 of a conventional vacuum valve having approximately the same axial length as the vacuum valve according to the present invention are shown in Fig. 2 as a and b in the figure. , c, that is, the following value.
L2＝ａ＋ｂ＋ｃ
したがつて図からも明らかなように、
L1＝（ｄ＋ｅ＋ｆ＋ｇ＋ｈ＋ｉ＋ｋ）≧（ａ＋ｂ＋
ｃ）
＝L2
であつて、非常に大きな沿面距離を得ることがで
きる。又平板形絶縁板１１と絶縁管１０との接合
面は液状絶縁物１３などで密封されているためリ
ーク電流が流れることなく完全に絶縁が保てる。
この様に極間性能が向上するので、例えば600V
回路用真空バルブを6600V回路用に格上げ使用す
ることができる。従つて種々な回路電圧に対し同
じ真空バルブが使用できるので真空バルブの統一
化、量産化が可能となり非常に経済的となる。 L 2 =a+b+c Therefore, as is clear from the figure, L 1 =(d+e+f+g+h+i+k)≧(a+b+
c) = L 2 and a very large creepage distance can be obtained. Further, since the joint surface between the flat insulating plate 11 and the insulating tube 10 is sealed with a liquid insulator 13, complete insulation can be maintained without any leakage current.
In this way, the performance between poles is improved, so for example 600V
The vacuum valve for the circuit can be upgraded and used for the 6600V circuit. Therefore, the same vacuum valve can be used for various circuit voltages, making it possible to unify vacuum valves and mass-produce them, which is very economical.
第１図は従来の真空バルブの一例の組立断面
図、第２図は本発明による真空バルブの一実施例
の組立断面図である。
１……可動軸、２……固定軸、３……可動接
点、４……固定接点、５……絶縁真空容器、６…
…可動接点側端板、７……金属ベローズ、８……
固定接点側端板、９……アークシールド、１０…
…絶縁管、１１……平板形絶縁板、１２……絶縁
栓、１３……液状又は接着性のある絶縁物。
FIG. 1 is an assembled sectional view of an example of a conventional vacuum valve, and FIG. 2 is an assembled sectional view of an embodiment of a vacuum valve according to the present invention. 1...Movable axis, 2...Fixed axis, 3...Movable contact, 4...Fixed contact, 5...Insulating vacuum container, 6...
...Movable contact side end plate, 7...Metal bellows, 8...
Fixed contact side end plate, 9...Arc shield, 10...
...Insulating tube, 11... Flat insulating plate, 12... Insulating plug, 13... Liquid or adhesive insulator.
Claims (1)
軸方向中間部に段付部を形成して上記開放部側を
大径部とし、上記底部にて可動軸を滑動自在に保
持する絶縁管と、 上記絶縁管内に開放部側より挿入されて上記段
付部の内側段部にその外縁部を接合され、その外
周円筒面は上記絶縁管の大径部の内周円筒面との
間に隙間を有するとともにその内周円筒面は上記
絶縁管の中心に軸方向に配置される上記可動軸の
可動接点及び上記可動軸の反対側に位置する固定
軸の固定接点間の絶縁筒として機能するリング状
の平板形絶縁板と、 上記絶縁管内に開放部側から装着され底部側の
端面を上記平板形絶縁板の開放部側の端面に押付
けることにより上記平板形絶縁板を絶縁管に固定
するリング状の絶縁栓と、 上記絶縁管、絶縁板、及び絶縁栓の三者が接合
する部分に充填された液状または接着性のある絶
縁物と、 上記平板形絶縁板の開放部側の端面であつて内
縁近傍にその外縁部が固着されるともに内縁部が
上記固定軸に固着された固定側端板と、 上記平板形絶縁板の底部側の端面にその外縁部
が固着されるとともに内縁部が上記可動軸との間
に隙間を有する可動側端板と、 上記可動側端板の底部側の端面と上記可動軸と
の間に取付けられたベローズ、 とを具備したことを特徴とする真空バルブ。[Claims] 1 One end is a bottom and the other end is an open part, and a stepped part is formed in the axially intermediate part so that the open part side is a large diameter part, and the movable shaft can freely slide on the bottom part. an insulating tube that is inserted into the insulating tube from the open side and has its outer edge joined to the inner stepped portion of the stepped portion, and its outer cylindrical surface is connected to the inner cylindrical surface of the large diameter portion of the insulating tube. The inner cylindrical surface has a gap between the movable contact of the movable shaft arranged axially at the center of the insulating tube and the fixed contact of the fixed shaft located on the opposite side of the movable shaft. A ring-shaped flat insulating plate that functions as an insulating cylinder; and the flat insulating plate is installed in the insulating tube from the open side and the bottom end face is pressed against the open side end face of the flat insulating plate. a ring-shaped insulating plug that fixes the insulating tube to the insulating tube; a liquid or adhesive insulating material filled in the joint of the insulating tube, the insulating plate, and the insulating plug; and the flat insulating plate. a fixed side end plate whose outer edge is fixed near the inner edge on the open part side and whose inner edge is fixed to the fixed shaft; and a fixed side end plate whose outer edge is fixed to the bottom side of the flat insulating plate. a movable end plate that is fixed and has an inner edge with a gap between it and the movable shaft; and a bellows that is attached between the bottom end surface of the movable end plate and the movable shaft. A vacuum valve characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6992880A JPS56167220A (en) | 1980-05-26 | 1980-05-26 | Vacuum valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6992880A JPS56167220A (en) | 1980-05-26 | 1980-05-26 | Vacuum valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56167220A JPS56167220A (en) | 1981-12-22 |
| JPS6221207B2 true JPS6221207B2 (en) | 1987-05-12 |
Family
ID=13416830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6992880A Granted JPS56167220A (en) | 1980-05-26 | 1980-05-26 | Vacuum valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS56167220A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63127504U (en) * | 1987-02-12 | 1988-08-22 |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943747U (en) * | 1972-07-21 | 1974-04-17 |
-
1980
- 1980-05-26 JP JP6992880A patent/JPS56167220A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4943747U (en) * | 1972-07-21 | 1974-04-17 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63127504U (en) * | 1987-02-12 | 1988-08-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56167220A (en) | 1981-12-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US4618749A (en) | Solid insulator-type vacuum switch gear | |
| US2014809A (en) | Electron discharge tube | |
| US4672156A (en) | Vacuum interrupter with bellows shield | |
| JPS6213778B2 (en) | ||
| US3889080A (en) | Vacuum interrupter shield protector | |
| US3141058A (en) | Ceramic-to-metal seal for high voltage vacuum device | |
| US4020304A (en) | Two-material vapor shield for vacuum-type circuit interrupter | |
| US4088860A (en) | Vacuum interrupter for high voltage application | |
| JPS6054126A (en) | Vacuum bulb | |
| US4063991A (en) | Method of increasing voltage withstanding capability of vacuum interrupters | |
| JPS6221207B2 (en) | ||
| EP0200465A2 (en) | Vacuum devices | |
| JPS631691B2 (en) | ||
| US2748309A (en) | Gas or vapor discharge tube | |
| US4547638A (en) | Vacuum interrupter | |
| JPS6245403Y2 (en) | ||
| JPS637414B2 (en) | ||
| US2453978A (en) | Electrode structure | |
| JPS6226131B2 (en) | ||
| JPS60180028A (en) | Vacuum bulb | |
| JP2540903B2 (en) | Vacuum valve | |
| US2313029A (en) | Vapor electric device | |
| JPS5843155Y2 (en) | Vacuum cutter | |
| JPS6321899Y2 (en) | ||
| JPS596587Y2 (en) | vacuum valve |