JP2001297666A - Vacuum valve - Google Patents
Vacuum valveInfo
- Publication number
- JP2001297666A JP2001297666A JP2000111595A JP2000111595A JP2001297666A JP 2001297666 A JP2001297666 A JP 2001297666A JP 2000111595 A JP2000111595 A JP 2000111595A JP 2000111595 A JP2000111595 A JP 2000111595A JP 2001297666 A JP2001297666 A JP 2001297666A
- Authority
- JP
- Japan
- Prior art keywords
- insulating container
- shield
- vacuum valve
- holder
- shield member
- 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
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
- H01H33/66261—Specific screen details, e.g. mounting, materials, multiple screens or specific electrical field considerations
- H01H2033/66276—Details relating to the mounting of screens in vacuum switches
Landscapes
- High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、真空遮断器等に
搭載される真空バルブに関するものであり、特に絶縁容
器と電極との間に設けた金属シールドに関するものであ
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vacuum valve mounted on a vacuum circuit breaker or the like, and more particularly, to a metal shield provided between an insulating container and an electrode.
【０００２】[0002]
【従来の技術】図５は従来の真空バルブを示す側面断面
図であり、この従来の真空バルブは、内周面の径方向に
支持用突起部１１ａを有する絶縁筒でなる円筒状の絶縁
容器１１と、この絶縁容器１１内に設置された接離可能
な、少なくとも一対の固定電極１２及び可動電極１３
と、絶縁容器１１内に設置され、上記一対の固定電極１
２及び可動電極１３の開極時に発生する金属アークが、
絶縁容器１１の内面に付着するのを防止するシールド部
材１４と、シールド部材１４の外周面に溶着されるリン
グ状のシールドホルダー１５を備えている。2. Description of the Related Art FIG. 5 is a side sectional view showing a conventional vacuum valve. This conventional vacuum valve is a cylindrical insulating container formed of an insulating cylinder having a supporting projection 11a in a radial direction of an inner peripheral surface. 11 and at least one pair of fixed electrode 12 and movable electrode 13 which can be attached and detached and installed in this insulating container 11.
And a pair of fixed electrodes 1 installed in an insulating container 11.
2 and the metal arc generated when the movable electrode 13 is opened,
It has a shield member 14 for preventing it from adhering to the inner surface of the insulating container 11 and a ring-shaped shield holder 15 welded to the outer peripheral surface of the shield member 14.
【０００３】そして、シールド部材１４は、図５に示す
ように、その上端外周面にシールドホルダー１５を固着
することによって、絶縁容器１１の内周面の径方向の支
持用突起部１１ａに引っ掛けるようセットされている。
この固定の仕方としては、特開昭６４−２０６３６号公
報に示されるような、シールドホルダー１５とシールド
部材１４を溶接にて固着する方法や、特開昭５９−８２
６号公報に示されるように、ろう付けにて取り付ける方
法等がある。[0005] As shown in FIG. 5, a shield holder 15 is fixed to the outer peripheral surface of the upper end of the shield member 14 so that the shield member 14 can be hooked on the radial support projection 11 a on the inner peripheral surface of the insulating container 11. Is set.
As a fixing method, a method of fixing the shield holder 15 and the shield member 14 by welding as disclosed in JP-A-64-20636, and a method disclosed in JP-A-59-82
As shown in Japanese Patent Publication No. 6, there is a method of attaching by brazing or the like.
【０００４】[0004]
【発明が解決しようとする課題】従来の真空バルブは以
上のように構成されているが、溶接にて固着する場合
は、固着した後にろう付け温度にさらされた時に、金属
製のシールド部材及びシールドホルダーは、熱膨張によ
り径方向に広がる。この時金属よりも線膨張係数の小さ
いセラミックスは、ろう付け温度において膨張幅が小さ
く、シールド部材及びシールドホルダーが、内側よりセ
ラミックス製の絶縁容器を押しやり、時にはセラミック
スを押し割る事象が発生するという問題点があった。The conventional vacuum valve is constructed as described above, but when it is fixed by welding, when it is exposed to a brazing temperature after being fixed, a metal shield member and The shield holder expands in the radial direction due to thermal expansion. At this time, ceramics having a smaller linear expansion coefficient than metal have a smaller expansion width at the brazing temperature, and the shield member and the shield holder push the ceramic insulating container from the inside, sometimes causing the ceramic to be cracked. There was a problem.
【０００５】この発明は上記のような問題点を解決する
ためになされたものであり、シールドホルダーにスリッ
トを入れることにより、ろう付け時の熱膨張差によるシ
ールドホルダー及びシールド部材が、絶縁容器を外方向
に押しやる応力を、シールドホルダーに設けられたスリ
ットが吸収し、熱膨張差による応力を緩和することを目
的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-described problems. By providing a slit in a shield holder, the shield holder and the shield member due to a difference in thermal expansion during brazing can be used to form an insulating container. An object of the present invention is to provide a slit provided in a shield holder for absorbing a force for pushing outward, and to reduce a stress due to a difference in thermal expansion.
【０００６】[0006]
【課題を解決するための手段】この発明の請求項１に係
る真空バルブは、円筒状の絶縁容器内に設置された固定
電極及び可動電極と、絶縁容器内に設置されたシールド
部材と、このシールド部材の外周面に設けられたリング
状のシールドホルダーとを備えたものであって、シール
ドホルダーの底面Ｒ部分にスリットを設けたものであ
る。According to a first aspect of the present invention, there is provided a vacuum valve comprising: a fixed electrode and a movable electrode provided in a cylindrical insulating container; a shield member provided in the insulating container; A ring-shaped shield holder provided on the outer peripheral surface of the shield member, wherein a slit is provided on a bottom surface R of the shield holder.
【０００７】この発明の請求項２に係る真空バルブは、
スリットを、放射状に、円周上等間隔で複数個所配設し
たものである。[0007] The vacuum valve according to claim 2 of the present invention comprises:
A plurality of slits are radially arranged at equal intervals on the circumference.
【０００８】[0008]
【発明の実施の形態】実施の形態１．図１はこの発明の
実施の形態１による真空バルブを示す側面断面図、図２
は同じくシールド部材及びシールドホルダー固着部と絶
縁容器との嵌合態様を示す一部拡大の側面断面図、図３
はシールドホルダーを示す側面図、図４はシールドホル
ダーを底面から見た図である。図において、本実施形態
による真空バルブは、内周面の径方向に支持用突起部１
ａを有する絶縁筒でなる円筒状の絶縁容器１と、この絶
縁容器１内に設置された接離可能な、少なくとも一対の
固定電極２及び可動電極３と、絶縁容器１内に設置さ
れ、一対の固定電極２及び可動電極３の開極時に発生す
る金属アークが、絶縁容器１の内面に付着するのを防止
するシールド部材４と、シールド部材４の外周面に溶着
されるリング状のシールドホルダー５を備えている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiment 1 FIG. 1 is a side sectional view showing a vacuum valve according to Embodiment 1 of the present invention.
FIG. 3 is a partially enlarged side sectional view showing the manner of fitting the shield member and the shield holder fixing portion to the insulating container.
Is a side view showing the shield holder, and FIG. 4 is a view of the shield holder as viewed from the bottom. In the figure, a vacuum valve according to the present embodiment has a support projection 1 in a radial direction of an inner peripheral surface.
a, a cylindrical insulating container 1 made of an insulating tube having a, at least a pair of fixed electrodes 2 and a movable electrode 3 which are provided in the insulating container 1 and which can be separated from each other; A shield member 4 for preventing a metal arc generated when the fixed electrode 2 and the movable electrode 3 are opened from adhering to the inner surface of the insulating container 1, and a ring-shaped shield holder welded to the outer peripheral surface of the shield member 4 5 is provided.
【０００９】そして、シールド部材４とシールドホルダ
ー５は、図２に示すように固着されており、この状態に
てろう付け温度まで加熱されると、金属製のシールド部
材４及びシールドホルダー５は、温度上昇によって熱膨
張し、径方向に広がる。しかし、セラミックス製の絶縁
容器１は、金属製のシールド部材４及びシールドホルダ
ー５より線膨張係数が小さい為、熱膨張も小さい。この
ことにより、ろう付け時にはシールド部材４及びシール
ドホルダー５が絶縁容器１に設けられた支持用突起部１
ａを押す力が発生する。The shield member 4 and the shield holder 5 are fixed as shown in FIG. 2. When heated to a brazing temperature in this state, the metal shield member 4 and the shield holder 5 Thermal expansion occurs due to temperature rise and expands in the radial direction. However, since the ceramic insulating container 1 has a smaller linear expansion coefficient than the metal shield member 4 and the shield holder 5, the thermal expansion is also small. As a result, at the time of brazing, the shield member 4 and the shield holder 5 are provided on the supporting projection 1 provided on the insulating container 1.
A force is generated to press a.
【００１０】この絶縁容器１を押す力は、支持用突起部
１ａの１ｂ点及び１ｃ点に作用し、絶縁容器１を径方向
外側に向かう力が作用する。そこで本発明では、図３に
示すように、シールドホルダー５の底面部であるＲ部分
にスリット５ａを設けることにより、１ｂ点及び１ｃ点
にかかる力を、シールドホルダー５のスリット５ａによ
り吸収し、絶縁容器１を押す力を緩和する。このことに
より絶縁容器１が割れる事象を防ぐことが出来る。The force for pushing the insulating container 1 acts on points 1b and 1c of the supporting projection 1a, and a force that acts on the insulating container 1 radially outward is applied. Therefore, in the present invention, as shown in FIG. 3, by providing a slit 5 a in the R portion which is the bottom portion of the shield holder 5, the force applied to the points 1 b and 1 c is absorbed by the slit 5 a of the shield holder 5, The pressing force on the insulating container 1 is reduced. This can prevent the insulating container 1 from breaking.
【００１１】このようにシールドホルダー５にスリット
５ａを設けることにより、ろう付け時のシールド部材４
及びシールドホルダー５の熱膨張による応力、および絶
縁容器１にかかる応力を軽減し、信頼性の高い真空バル
ブの設計が可能になる。なお、このとき、スリット５ａ
を図４のように、円周上等間隔に複数個所（図では３個
所）放射状に配設することで、上記応力が均等に分散吸
収される効果がある。By providing the slit 5a in the shield holder 5 as described above, the shield member 4 can be used for brazing.
In addition, stress due to thermal expansion of the shield holder 5 and stress applied to the insulating container 1 are reduced, and a highly reliable vacuum valve can be designed. At this time, the slit 5a
As shown in FIG. 4, by arranging radially at a plurality of locations (three locations in the figure) at equal intervals on the circumference, there is an effect that the stress is uniformly dispersed and absorbed.
【００１２】[0012]
【発明の効果】この発明の請求項１に係る真空バルブに
よれば、円筒状の絶縁容器内に設置された固定電極及び
可動電極と、絶縁容器内に設置されたシールド部材と、
このシールド部材の外周面に設けられたリング状のシー
ルドホルダーとを備えたものであって、シールドホルダ
ーの底面Ｒ部分にスリットを設けたので、ろう付け時の
シールド部材及びシールドホルダーの熱膨張による応
力、及び絶縁容器にかかる応力を軽減し、信頼性の高い
真空バルブの設計が可能になる。According to the vacuum valve according to the first aspect of the present invention, the fixed electrode and the movable electrode installed in the cylindrical insulating container, the shield member installed in the insulating container,
A ring-shaped shield holder provided on the outer peripheral surface of the shield member, and a slit is provided in the bottom surface R portion of the shield holder. Stress and stress applied to the insulating container can be reduced, and a highly reliable vacuum valve can be designed.
【００１３】この発明の請求項２に係る真空バルブによ
れば、スリットを放射状に、円周上等間隔で複数個所配
設したので、応力が均等に分散吸収される。According to the vacuum valve of the second aspect of the present invention, the plurality of slits are radially arranged at equal intervals on the circumference, so that the stress is uniformly dispersed and absorbed.
【図１】 この発明の実施の形態１による真空バルブを
示す側面断面図である。FIG. 1 is a side sectional view showing a vacuum valve according to a first embodiment of the present invention.
【図２】 この発明の実施の形態１による真空バルブを
示す一部の拡大側面断面図である。FIG. 2 is a partially enlarged side sectional view showing a vacuum valve according to Embodiment 1 of the present invention.
【図３】 シールドホルダーを示す側面図である。FIG. 3 is a side view showing a shield holder.
【図４】 シールドホルダーを示す底面図である。FIG. 4 is a bottom view showing the shield holder.
【図５】 従来の真空バルブを示す側面断面図である。FIG. 5 is a side sectional view showing a conventional vacuum valve.
１ 絶縁容器、２ 固定電極、３ 可動電極、４ シー
ルド部材、５ シールドホルダー、５ａ スリット。1 Insulating container, 2 fixed electrode, 3 movable electrode, 4 shield member, 5 shield holder, 5a slit.
Claims (2)
極及び可動電極と、上記絶縁容器内に設置されたシール
ド部材と、このシールド部材の外周面に設けられたリン
グ状のシールドホルダーとを備えた真空バルブにおい
て、上記リング状のシールドホルダーの底面Ｒ部分にス
リットを設けたことを特徴とする真空バルブ。1. A fixed electrode and a movable electrode provided in a cylindrical insulating container, a shield member provided in the insulating container, and a ring-shaped shield holder provided on an outer peripheral surface of the shield member. A vacuum valve, comprising: a slit provided in a bottom surface R of the ring-shaped shield holder.
複数個所配設されていることを特徴とする請求項１記載
の真空バルブ。2. The vacuum valve according to claim 1, wherein a plurality of slits are radially arranged at equal intervals on a circumference.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000111595A JP4407994B2 (en) | 2000-04-13 | 2000-04-13 | Vacuum valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000111595A JP4407994B2 (en) | 2000-04-13 | 2000-04-13 | Vacuum valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001297666A true JP2001297666A (en) | 2001-10-26 |
| JP4407994B2 JP4407994B2 (en) | 2010-02-03 |
Family
ID=18623900
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000111595A Expired - Fee Related JP4407994B2 (en) | 2000-04-13 | 2000-04-13 | Vacuum valve |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4407994B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2960921B1 (en) | 2014-06-27 | 2017-04-12 | Schneider Electric Industries SAS | Self-centring assembly for a vacuum tube and vacuum tube |
| EP3276650A1 (en) * | 2016-07-27 | 2018-01-31 | ABB Schweiz AG | Vacuum interrupter with a ceramic body and at least one shielding element, and method for producing the same |
-
2000
- 2000-04-13 JP JP2000111595A patent/JP4407994B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2960921B1 (en) | 2014-06-27 | 2017-04-12 | Schneider Electric Industries SAS | Self-centring assembly for a vacuum tube and vacuum tube |
| EP3276650A1 (en) * | 2016-07-27 | 2018-01-31 | ABB Schweiz AG | Vacuum interrupter with a ceramic body and at least one shielding element, and method for producing the same |
| WO2018019952A1 (en) * | 2016-07-27 | 2018-02-01 | Abb Schweiz Ag | Vacuum interrupter with a ceramic body and at least one shielding element, and method for producing the same |
| CN109478480A (en) * | 2016-07-27 | 2019-03-15 | Abb瑞士股份有限公司 | Vacuum extinction device and its manufacturing method with ceramic body He at least one shielding element |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4407994B2 (en) | 2010-02-03 |
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