JPH0112356Y2 - - Google Patents
Info
- Publication number
- JPH0112356Y2 JPH0112356Y2 JP1983175035U JP17503583U JPH0112356Y2 JP H0112356 Y2 JPH0112356 Y2 JP H0112356Y2 JP 1983175035 U JP1983175035 U JP 1983175035U JP 17503583 U JP17503583 U JP 17503583U JP H0112356 Y2 JPH0112356 Y2 JP H0112356Y2
- Authority
- JP
- Japan
- Prior art keywords
- shield
- metal end
- end plate
- vacuum
- metal
- 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
- 239000002184 metal Substances 0.000 claims description 34
- 229910052751 metal Inorganic materials 0.000 claims description 34
- 238000005219 brazing Methods 0.000 claims description 16
- 238000007789 sealing Methods 0.000 claims description 14
- 239000000463 material Substances 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 5
- 229910052802 copper Inorganic materials 0.000 claims description 5
- 239000010949 copper Substances 0.000 claims description 5
- 239000007769 metal material Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 description 6
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 229910000833 kovar Inorganic materials 0.000 description 3
- 229910001030 Iron–nickel alloy Inorganic materials 0.000 description 2
- 239000012159 carrier gas Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 229910017709 Ni Co Inorganic materials 0.000 description 1
- 229910003267 Ni-Co Inorganic materials 0.000 description 1
- 229910003262 Ni‐Co Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 229910000679 solder Inorganic materials 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
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
- H01H33/662—Housings or protective screens
- H01H33/66207—Specific housing details, e.g. sealing, soldering or brazing
- H01H2033/66215—Details relating to the soldering or brazing of vacuum switch housings
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Description
【考案の詳細な説明】
考案の技術分野
本考案は、金属端板内面に円筒状のシールドを
ろう付けしてなる真空インタラプタに関する。[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a vacuum interrupter formed by brazing a cylindrical shield to the inner surface of a metal end plate.
従来技術と問題点
一般に、真空インタラプタは、第１図に示すよ
うに、円筒状に形成したガラスまたはセラミツク
スからなる複数の絶縁筒１，１の両端に、例えば
コバール（Fe−Ni−Co合金）からなる薄肉リン
グ状の封着金具２，２，…を植設し、この一方の
封着金具２，２を介し各絶縁筒１，１を同軸的に
接合して１本の絶縁筒とするとともに、その両開
口端を他方の封着金具２，２を介し、例えばステ
ンレス鋼、コバールまたはその他Fe−Ni合金か
らなる円板状の金属端板３，３により気密に封止
し、かつ内部を高真空に排気して真空容器４が形
成されている。PRIOR ART AND PROBLEMS Generally, as shown in FIG. 1, a vacuum interrupter has a plurality of cylindrical insulating tubes 1 made of glass or ceramics, each of which has a plurality of insulating cylinders 1, 1 made of glass or ceramics, and has, for example, Kovar (Fe-Ni-Co alloy) at both ends. Thin ring-shaped sealing fittings 2, 2, . At the same time, both open ends are hermetically sealed with disk-shaped metal end plates 3, 3 made of, for example, stainless steel, Kovar, or other Fe-Ni alloy, via the other sealing fittings 2, 2, and the interior is sealed. A vacuum container 4 is formed by evacuating to a high vacuum.
そして、この真空容器４内には、１対の電極
５，５が、各金属端板３，３の中央部から真空容
器４の気密性を保持して相対的に接近離反自在に
導入された電極棒６，６を介し、接離自在に対向
配置されている。なお、７は金属ベローズで、８
および９は、それぞれ各電極棒６，６に取付けら
れた軸シールドおよびベローズシールドである。 A pair of electrodes 5, 5 are introduced into the vacuum container 4 from the center of each metal end plate 3, 3 so as to be able to approach and separate from each other while maintaining the airtightness of the vacuum container 4. The electrode rods 6, 6 are arranged to face each other so as to be able to come into contact with and separate from each other. In addition, 7 is a metal bellows, and 8
and 9 are a shaft shield and a bellows shield attached to each electrode rod 6, 6, respectively.
また、真空容器４内には、電極５，５等を同心
状に囲繞する円筒状の主シールド１０が、その中
間部付近に形成されたフランジ部１０ａを一方の
封着金具２，２に挟持されて取付けられている。
さらに、各金属端板３，３の内面には、円筒状の
シールド（補助シールド）１１，１１が接合され
ている。 Further, inside the vacuum container 4, a cylindrical main shield 10 concentrically surrounds the electrodes 5, 5, etc., and a flange portion 10a formed near the middle portion thereof is sandwiched between one of the sealing fittings 2, 2. It has been installed.
Further, cylindrical shields (auxiliary shields) 11, 11 are bonded to the inner surfaces of the respective metal end plates 3, 3.
このシールド１１は、通常ステンレス鋼、コバ
ールまたはその他Fe−Ni合金等からなり、従来、
第２図に示すようにして金属端板３に接合されて
いた。すなわち、金属端板３の内面には、外径が
シールド１１の外径より大きくかつ内径がシール
ド１１の内径とほぼ等しいリング状の凹部１２が
形成されている。そして、この凹部１２には、シ
ールド１１が嵌装されるとともに、銅を主成分と
するろう材１３が充填されて、例えば10-3〜
10-4Torr以下の高真空中または10〜10-2Torrの
キヤリアガス中においてろう付けによりシールド
１１と金属端板３３とが接合される。 This shield 11 is usually made of stainless steel, Kovar or other Fe-Ni alloy, and conventionally,
It was joined to the metal end plate 3 as shown in FIG. That is, a ring-shaped recess 12 having an outer diameter larger than the outer diameter of the shield 11 and an inner diameter substantially equal to the inner diameter of the shield 11 is formed on the inner surface of the metal end plate 3 . The recess 12 is fitted with the shield 11 and filled with a brazing filler metal 13 containing copper as a main component, for example, from 10 -3 to
The shield 11 and the metal end plate 33 are joined by brazing in a high vacuum of 10 -4 Torr or less or in a carrier gas of 10 to 10 -2 Torr.
しかしながら、上記シールド１１と金属端板３
とのろう付け接合時に、前記ろう材１３が、後に
溶接により接合される金属端板３と封着金具２と
の接合箇所に飛散、蒸着する。したがつて、金属
端板３と封着金具２との接合箇所に銅が存在する
ために、その溶接が不可能になるという欠点があ
つた。また、たとえば溶接が行なえても、その後
に溶接歪と相俟つて溶接不良を惹起し、ひいては
真空インタラプタの真空度劣化を来たす虞れがあ
つた。 However, the shield 11 and the metal end plate 3
At the time of brazing and joining, the brazing material 13 is scattered and vapor-deposited at the joint between the metal end plate 3 and the sealing fitting 2, which will be joined later by welding. Therefore, since copper is present at the joint between the metal end plate 3 and the sealing fitting 2, there is a drawback that welding therebetween becomes impossible. Further, even if welding can be carried out, for example, there is a risk that the welding may be caused by welding distortion, resulting in a defective welding, and that the degree of vacuum in the vacuum interrupter may deteriorate.
考案の目的
本考案は、かかる従来の欠点を解消すべくなさ
れたもので、真空度が劣化されることのない高信
頼性の真空インタラプタを提供することを目的と
する。Purpose of the Invention The present invention was made to eliminate such conventional drawbacks, and an object of the present invention is to provide a highly reliable vacuum interrupter in which the degree of vacuum does not deteriorate.
考案の概要
かかる目的を達成するために、本考案は、絶縁
筒の両端を金属材料からなるリング状の封着金具
を介し金属端板により気密に封止して真空容器を
形成するとともに、この真空容器内に１対の電極
を接離自在に対向配置し、少なくとも一方の金属
端板の内面に円筒状のシールドを銅を主成分とす
るろう材により接合してなる真空インタラプタに
おいて、前記シールドを接合する金属端板の内面
に内径がシールド内径より小さくかつ外径がシー
ルド外径とほぼ等しいリング状の凹部を形成する
とともに、この凹部にシールドを嵌装し、かつシ
ールドの内側に充填したろう材によりシールドと
金属端板とを接合したものである。Summary of the invention In order to achieve the above object, the present invention forms a vacuum container by airtightly sealing both ends of an insulating cylinder with a metal end plate through a ring-shaped sealing fitting made of a metal material. In a vacuum interrupter, a pair of electrodes are disposed facing each other in a vacuum container so as to be able to freely come and go, and a cylindrical shield is bonded to the inner surface of at least one metal end plate with a brazing material mainly composed of copper. A ring-shaped recess with an inner diameter smaller than the shield inner diameter and an outer diameter approximately equal to the shield outer diameter is formed on the inner surface of the metal end plate to which the A shield and a metal end plate are joined using a brazing material.
実施例
以下、本考案を第３図以降に示す実施例により
さらに詳細に説明する。なお、第２図と同一部分
については同一符号をもつて示し、説明を省略す
る。EXAMPLES Hereinafter, the present invention will be explained in more detail with reference to examples shown in FIG. 3 and subsequent figures. Note that the same parts as in FIG. 2 are designated by the same reference numerals, and their explanation will be omitted.
本考案の真空しや断器は、その要部を例えば第
３図に示すように、シールド１１を接合する金属
端板３の内面には、内径がシールド１１の内径よ
り小さくかつ外径がシールド１１の外径とほぼ等
しいリング状の凹部１４が形成されている。ま
た、この凹部１４の内周壁は、底部から開口部に
向けて順次直線的に小径となるように傾斜して形
成されている。この凹部１４には、シールド１１
が凹部１４の外周壁に一端部外周面を当接して嵌
装され、シールド１１の内側に銅を主成分とする
ろう材１３が充填されて、例えば10-3〜
10-4Torr以下の高真空中または10〜10-2Torr程
度のキヤリアガス中においてろう付けによりシー
ルド１１と金属端板３とが接合されている。 The main part of the vacuum shield disconnector of the present invention is shown in FIG. 3, for example, as shown in FIG. A ring-shaped recess 14 having an outer diameter approximately equal to the outer diameter of the ring 11 is formed. Moreover, the inner circumferential wall of the recess 14 is formed so as to be inclined so that the diameter gradually decreases linearly from the bottom toward the opening. This recess 14 has a shield 11
is fitted with its one end outer circumferential surface in contact with the outer circumferential wall of the recess 14, and the inside of the shield 11 is filled with a brazing filler metal 13 whose main component is copper .
The shield 11 and the metal end plate 3 are joined by brazing in a high vacuum of 10 -4 Torr or less or in a carrier gas of about 10 to 10 -2 Torr.
かかる実施例においては、シールド１１と金属
端板３とのろう付け接合時に、ろう材１３が後に
接合される金属端板３と封着金具２との接合箇所
に飛散、蒸着することがない。 In this embodiment, when the shield 11 and the metal end plate 3 are brazed together, the brazing material 13 is not scattered or vapor-deposited at the joint between the metal end plate 3 and the sealing fitting 2, which will be joined later.
なお、上記実施例においては、凹部１４の内周
壁をその底部から開口部に向けて順次直線的に小
径となるように傾斜して形成したが、本考案はか
かる実施例に限定されるものではなく、例えば第
４図又は第５図に示すような凹部の形状としても
よい。 In addition, in the above embodiment, the inner circumferential wall of the recess 14 is formed so as to be inclined in a straight line from the bottom toward the opening, but the present invention is not limited to such an embodiment. Instead, the shape of the recess may be, for example, as shown in FIG. 4 or FIG. 5.
すなわち、第４図に示すように、金属端板３の
内面に、内周壁がＲ形状の凹部１５を形成し、そ
の他は前記実施例と同様に構成してもよい。ま
た、第５図に示すように、金属端板３の内面に、
内周壁が断面くさび状の凹部１６を形成し、ろう
材１３をくさび状部１６ａに配設してもよい。第
５図に示す凹部１６の形状によれば、ろう材１３
が凹部１６より突出することがなく、作業性が良
好である。 That is, as shown in FIG. 4, a concave portion 15 having an R-shaped inner peripheral wall may be formed on the inner surface of the metal end plate 3, and the other configuration may be the same as in the previous embodiment. Moreover, as shown in FIG. 5, on the inner surface of the metal end plate 3,
The inner circumferential wall may form a recess 16 having a wedge-shaped cross section, and the brazing material 13 may be disposed in the wedge-shaped portion 16a. According to the shape of the recess 16 shown in FIG.
does not protrude from the recess 16, and workability is good.
効 果
以上のように、本考案によれば、金属端板に接
合されるシールドは、その内側に配置したろう材
により金属端板にろう付けされているので、シー
ルドと金属端板とのろう付け接合時に、ろう材が
金属端板と封着金具との接合箇所に飛散、蒸着し
ていることがない。したがつて、金属端板と封着
金具との接合は良好であり、真空インタラプタの
真空度が劣化されることがない。Effects As described above, according to the present invention, the shield to be joined to the metal end plate is brazed to the metal end plate using the brazing material placed inside the shield, so that the solder bond between the shield and the metal end plate is During bonding, no brazing material is scattered or deposited on the joint between the metal end plate and the sealing fitting. Therefore, the metal end plate and the sealing fitting are well bonded, and the degree of vacuum of the vacuum interrupter is not deteriorated.
第１図は一般的な真空インタラプタの縦断面
図、第２図は従来の金属端板とシールドとの接合
部を示す半截断面図、第３図は本考案の真空イン
タラプタの一実施例における要部の半截断面図、
第４図および第５図はそれぞれ本考案の他の実施
例における要部の半截断面図である。
１……絶縁筒、２……封着金具、３……金属端
板、４……真空容器、５……電極、１１……シー
ルド、１３……ろう材、１４，１５，１６……凹
部。
Fig. 1 is a longitudinal cross-sectional view of a general vacuum interrupter, Fig. 2 is a half-cut cross-sectional view showing the joint between a conventional metal end plate and a shield, and Fig. 3 is a schematic diagram of an embodiment of the vacuum interrupter of the present invention. A half-cut sectional view of the section,
4 and 5 are half-cut sectional views of essential parts in other embodiments of the present invention, respectively. DESCRIPTION OF SYMBOLS 1... Insulating tube, 2... Sealing fitting, 3... Metal end plate, 4... Vacuum container, 5... Electrode, 11... Shield, 13... Brazing material, 14, 15, 16... Recessed part .
Claims (1)
封着金具２を介して金属端板３により気密に溶接
封止して真空容器４を形成するとともに、少なく
とも一方の金属端板３の内面に円筒状のシールド
１１を銅を主成分とするろう材１３により接合
し、前記封着金具２と金属端板３とを封止して形
成した真空容器４と、この真空容器４内に１対の
電極５を接離自在に対向配置してなる真空インタ
ラプタにおいて、前記シールド１１を接合する金
属端板３の内面に内径がシールド１１内径より小
さくかつ外径がシールド１１外径とほぼ等しいリ
ング状の凹部１４，１５，１６を形成するととも
に、この凹部１４，１５，１６にシールド１１を
嵌装し、かつこのシールド１１の内側をろう材１
３により金属端板３と接合したことを特徴とする
真空インタラプタ。 Both ends of the insulating tube 1 are hermetically welded and sealed with a metal end plate 3 through a ring-shaped sealing fitting 2 made of a metal material to form a vacuum vessel 4, and at least one of the metal end plates 3 has an inner surface A vacuum container 4 is formed by joining a cylindrical shield 11 with a brazing material 13 mainly made of copper, and sealing the sealing fitting 2 and the metal end plate 3. In the vacuum interrupter, the electrodes 5 are disposed facing each other so as to be able to freely come and go, and the metal end plate 3 to which the shield 11 is joined has a ring-shaped inner surface whose inner diameter is smaller than the inner diameter of the shield 11 and whose outer diameter is approximately equal to the outer diameter of the shield 11. The shield 11 is fitted into the recesses 14, 15, 16, and the brazing material 1 is placed inside the shield 11.
A vacuum interrupter characterized in that it is joined to a metal end plate 3 by 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17503583U JPS6084043U (en) | 1983-11-11 | 1983-11-11 | vacuum interrupter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17503583U JPS6084043U (en) | 1983-11-11 | 1983-11-11 | vacuum interrupter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6084043U JPS6084043U (en) | 1985-06-10 |
| JPH0112356Y2 true JPH0112356Y2 (en) | 1989-04-11 |
Family
ID=30380907
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17503583U Granted JPS6084043U (en) | 1983-11-11 | 1983-11-11 | vacuum interrupter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6084043U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4640148B2 (en) * | 2005-12-09 | 2011-03-02 | 株式会社日立製作所 | Vacuum container and power distribution switchgear using the vacuum container |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119141A (en) * | 1974-08-03 | 1976-02-16 | Seisan Kaihatsu Kagaku Kenkyus | TOHATSUYOKE SHORYO |
-
1983
- 1983-11-11 JP JP17503583U patent/JPS6084043U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5119141A (en) * | 1974-08-03 | 1976-02-16 | Seisan Kaihatsu Kagaku Kenkyus | TOHATSUYOKE SHORYO |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6084043U (en) | 1985-06-10 |
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