JP5901306B2 - Vacuum valve - Google Patents

Vacuum valve Download PDF

Info

Publication number
JP5901306B2
JP5901306B2 JP2012010692A JP2012010692A JP5901306B2 JP 5901306 B2 JP5901306 B2 JP 5901306B2 JP 2012010692 A JP2012010692 A JP 2012010692A JP 2012010692 A JP2012010692 A JP 2012010692A JP 5901306 B2 JP5901306 B2 JP 5901306B2
Authority
JP
Japan
Prior art keywords
electrode
groove
vacuum valve
reinforcing plate
hole
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.)
Active
Application number
JP2012010692A
Other languages
Japanese (ja)
Other versions
JP2013149545A5 (en
JP2013149545A (en
Inventor
勇佑 西村
勇佑 西村
糸谷 孝行
孝行 糸谷
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP2012010692A priority Critical patent/JP5901306B2/en
Publication of JP2013149545A publication Critical patent/JP2013149545A/en
Publication of JP2013149545A5 publication Critical patent/JP2013149545A5/ja
Application granted granted Critical
Publication of JP5901306B2 publication Critical patent/JP5901306B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • High-Tension Arc-Extinguishing Switches Without Spraying Means (AREA)

Description

この発明は、真空遮断器等に用いられる真空バルブに関し、詳しくは接離自在に相対する一対の電極部の改良に関するものである。   The present invention relates to a vacuum valve used for a vacuum circuit breaker or the like, and more particularly to improvement of a pair of electrode portions that are detachably opposed to each other.

従来の真空バルブは、図16、図17、図18に示すように電極棒1、補強板3、スペーサー2、電極4等により構成されている。
そして、電極4を構成する補強板3によって電極の強度不足を補い、ア−クが電極の溝5を通ることによって電極背面の汚損を防止している。
A conventional vacuum valve is composed of an electrode rod 1, a reinforcing plate 3, a spacer 2, an electrode 4 and the like as shown in FIGS.
The reinforcing plate 3 constituting the electrode 4 compensates for the insufficient strength of the electrode, and the arc passes through the groove 5 of the electrode to prevent the back surface of the electrode from being soiled.

一般的に、真空バルブの組立工程は、部分ろう付けと最終ろう付けに分かれる。
部分ろう付けでは、まず、電極棒1にスペーサー2、補強板3、電極4を嵌め合わせ、各部品間にリング状の箔のろう材をはさみ込む。
端板18と下側の電極(可動電極)4との組立工程の場合は、さらにベローズ17を電極棒1に取付け、各部品と電極棒1の間にろう材をはさみ込む。このろう材を溶融・凝固させ、各部品間をろう付け接合し、上側の電極(固定電極)4及び下側の電極(可動電極)4をそれぞれ製作する。
最終ろう付けでは、部分ろう付け後に、電極4、シールド19及び絶縁容器20を、図16のように組立て、各部品間にろう材をはさみ込み、部分ろう付けと同様にろう材を溶融・凝固させ、各部品間のろう付け接合がそれぞれ行われる。
In general, the vacuum valve assembly process is divided into partial brazing and final brazing.
In partial brazing, first, the spacer 2, the reinforcing plate 3, and the electrode 4 are fitted to the electrode rod 1, and a brazing material of a ring-shaped foil is sandwiched between the components.
In the assembly process of the end plate 18 and the lower electrode (movable electrode) 4, a bellows 17 is further attached to the electrode rod 1, and a brazing material is sandwiched between each component and the electrode rod 1. The brazing material is melted and solidified, and the parts are brazed and joined to manufacture the upper electrode (fixed electrode) 4 and the lower electrode (movable electrode) 4.
In the final brazing, after the partial brazing, the electrode 4, the shield 19 and the insulating container 20 are assembled as shown in FIG. 16, the brazing material is sandwiched between the parts, and the brazing material is melted and solidified in the same manner as the partial brazing. Then, brazing joining between the respective parts is performed.

特開2005−135778号公報JP 2005-135778 A

図17及び図18において、従来の真空バルブは、部分ろう付け接合時に、溶融したろう材が電極の溝奥部6に集まり、電極の溝5を埋めてしまう事象が発生する問題点があった。このように電極の溝奥部6をろう材が埋めてしまうと、電極4の中心部から周縁部に流れる電流の経路が短くなり、電極4間に発生するアークに対する駆動力が低下する。アークに対する駆動力が低下すると遮断性能が低下するため、部分ろう付け接合時に、ろう材で電極の溝奥部6が埋まった電極4は、不良品となる。
又、最終ろう付け接合時に、部分ろう付けと同じろう材を使用する場合、ろう材が再溶融し、電極の溝奥部6を埋めてしまう可能性も考えられる。最終ろう付け接合時に、ろう材が電極の溝奥部6を埋めてしまった場合、前述のようにアークによる駆動力低下が発生する。最終ろう付け接合後、電極4は図16のように絶縁容器20で密封されおり、電極の溝奥部6のろう付け状態を確認することができないため、信頼性の低下を引き起こすことになる。
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、歩留まりの改善及び信頼性向上を図った真空バルブの提供を目的とするものである。
In FIG. 17 and FIG. 18, the conventional vacuum valve has a problem that a phenomenon occurs in which the molten brazing material gathers in the groove portion 6 of the electrode and fills the electrode groove 5 at the time of partial brazing joining. . When the brazing material fills the groove depth 6 of the electrode in this way, the path of the current flowing from the central portion to the peripheral portion of the electrode 4 is shortened, and the driving force against the arc generated between the electrodes 4 is reduced. When the driving force against the arc is reduced, the breaking performance is lowered. Therefore, the electrode 4 in which the groove depth 6 of the electrode is filled with the brazing material at the time of partial brazing joining becomes a defective product.
Further, when the same brazing material as that used for partial brazing is used at the time of final brazing joining, there is a possibility that the brazing material is remelted and the groove depth 6 of the electrode is filled. When the brazing material fills the groove depth 6 of the electrode at the time of final brazing and joining, a reduction in driving force due to the arc occurs as described above. After the final brazing and joining, the electrode 4 is sealed with the insulating container 20 as shown in FIG. 16, and the state of brazing of the groove depth 6 of the electrode cannot be confirmed.
The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a vacuum valve that improves yield and reliability.

この発明に係る真空バルブは、中央部から外周縁部に向かって複数の溝が形成され、絶縁容器を貫通した固定電極棒の内端部に装着された固定電極、及び中央部から外周縁部に向かって複数の溝が形成され、上記絶縁容器を出入り自在に貫通した可動電極棒の内端部に装着されて上記固定電極と離接する可動電極を備え、上記固定電極と上記固定電極棒間、及び上記可動電極と上記可動電極棒間は、それぞれろう付け接合された真空バルブにおいて、上記固定電極と可動電極、又はこれらの電極に対向して設けられた部材には、上記溝の内端部が位置する箇所に、余剰溶融ろう材を流し込む凹部を設けたものである。 The vacuum valve according to the present invention includes a fixed electrode having a plurality of grooves formed from a center portion toward an outer peripheral edge portion and attached to an inner end portion of a fixed electrode rod penetrating the insulating container, and an outer peripheral edge portion from the center portion. A plurality of grooves are formed, and a movable electrode that is attached to an inner end of a movable electrode rod that freely penetrates the insulating container and is attached to and detached from the fixed electrode is provided between the fixed electrode and the fixed electrode rod. In the vacuum valve brazed and joined between the movable electrode and the movable electrode rod , the fixed electrode and the movable electrode, or a member provided opposite to these electrodes, has an inner end of the groove. A recess into which the excess molten brazing material is poured is provided at a position where the portion is located.

この発明の真空バルブによれば、電極の溝奥部にあたる溝の内端部に凹部を設けているため、電極部の部分ろう付け接合時に電極の溝奥部をろう材が埋めてしまう事象を防止することができ、歩留まりを改善した真空バルブを提供することができる。又、真空バルブ最終のろう付け時に、電極部の部分ろう付けと同じろう材を使用する場合、ろう材が再溶融し、電極の溝奥部を埋めてしまうことがないため、信頼性を向上させた真空バルブを提供することができる。   According to the vacuum valve of the present invention, since the recess is provided at the inner end of the groove corresponding to the inner groove of the electrode, the phenomenon that the brazing material fills the inner groove of the electrode at the time of partial brazing joining of the electrode. Therefore, it is possible to provide a vacuum valve with improved yield. In addition, when using the same brazing material as the partial brazing of the electrode part at the time of final brazing of the vacuum valve, the brazing material will not be remelted and the depth of the electrode groove will not be filled, improving reliability. A vacuum valve can be provided.

この発明の実施の形態1における真空バルブの構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the vacuum valve in Embodiment 1 of this invention. この発明の実施の形態1における電極と補強板を示し、図1中のII―II線を矢印方向に見た背面図である。It is the rear view which showed the electrode and reinforcement board in Embodiment 1 of this invention, and looked at the II-II line | wire in FIG. 1 in the arrow direction. 図2中のIII―III線を矢印方向に見た縦断面図である。It is the longitudinal cross-sectional view which looked at the III-III line in FIG. 2 in the arrow direction. この発明の実施の形態1における真空バルブの変形例を示す電極部の平面図である。It is a top view of the electrode part which shows the modification of the vacuum valve in Embodiment 1 of this invention. 図4中のV―V線を矢印方向に見た縦断面図である。It is the longitudinal cross-sectional view which looked at the VV line | wire in FIG. 4 in the arrow direction. この発明の実施の形態2における電極と補強板を示す平面図である。It is a top view which shows the electrode and reinforcement board in Embodiment 2 of this invention. 図6中のVII―VII線を矢印方向に見た側断面図である。It is the sectional side view which looked at the VII-VII line in FIG. 6 in the arrow direction. この発明の実施の形態2における真空バルブの変形例を示す平面図である。It is a top view which shows the modification of the vacuum valve in Embodiment 2 of this invention. 図8中のIX―IX線を矢印方向に見た縦断面図である。It is the longitudinal cross-sectional view which looked at the IX-IX line in FIG. 8 in the arrow direction. この発明の実施の形態3における補強板を示す正面図である。It is a front view which shows the reinforcement board in Embodiment 3 of this invention. この発明の実施の形態3における補強板の変形例を示す正面図である。It is a front view which shows the modification of the reinforcement board in Embodiment 3 of this invention. この発明の実施の形態4における電極を示す背面図である。It is a rear view which shows the electrode in Embodiment 4 of this invention. 図12中のXIII―XIII線を矢印方向に見た縦断面図である。It is the longitudinal cross-sectional view which looked at the XIII-XIII line | wire in FIG. 12 in the arrow direction. この発明の実施の形態4における電極の変形例を示す背面図である。It is a rear view which shows the modification of the electrode in Embodiment 4 of this invention. 図14中のXV―XV線を矢印方向に見た縦断面図である。It is the longitudinal cross-sectional view which looked at the XV-XV line | wire in FIG. 14 in the arrow direction. 電極部を最終ろう付け接合した後の真空バルブの構成を示す縦断面図である。It is a longitudinal cross-sectional view which shows the structure of the vacuum valve after carrying out the last brazing joining of the electrode part. 従来の真空バルブ電極部の構成を示す平面図である。It is a top view which shows the structure of the conventional vacuum valve electrode part. 図17中のXVIII―XVIII線を矢印方向に見た縦断面図である。It is the longitudinal cross-sectional view which looked at the XVIII-XVIII line | wire in FIG. 17 in the arrow direction.

この発明の真空バルブは、図1に示すように、電極棒1(1a、1b)、スペーサー2(2a、2b)、補強板3(3a、3b)、溝5を有する風車形の電極4(4a、4b、)、ベローズ17、端板18、シールド19、絶縁容器20などで構成されている。なお、電極4は、上側が,固定電極棒1aの内端部に装着された固定電極4aであり、下側が,可動電極棒1bの内端部に装着されて固定電極4aと離接する可動電極4bである。又、風車形の電極4には、中央部から外周縁部に向かって複数の溝5が形成されており、固定電極棒1aは絶縁容器20を気密に貫通し、可動電極棒1bは、ベローズ17により絶縁容器20を出入り自在に気密に貫通している。
電極部は、電極棒1にスペーサー2、補強板3、電極4を嵌め合わせて構成し、各部材(部品)間にリング状の箔のろう材をはさみ込み、ろう材を溶融・凝固させることで、ろう付け接合する。そして、電極部には、後述するように、余剰ろう材を流し込む凹部(7,8,10,11,13,14,15,16)が各所に適宜設けられている。
以下、図面に基づいて、この発明の各実施の形態を説明する。
なお、各図間において、同一符号は同一あるいは相当部分を示す。
As shown in FIG. 1, the vacuum valve of the present invention includes a windmill-shaped electrode 4 having an electrode rod 1 (1a, 1b), a spacer 2 (2a, 2b), a reinforcing plate 3 (3a, 3b), and a groove 5 ( 4a, 4b), bellows 17, end plate 18, shield 19, insulating container 20, and the like. The upper side of the electrode 4 is a fixed electrode 4a attached to the inner end portion of the fixed electrode rod 1a, and the lower side is a movable electrode attached to the inner end portion of the movable electrode rod 1b so as to be in contact with and away from the fixed electrode 4a. 4b. The windmill-shaped electrode 4 is formed with a plurality of grooves 5 from the central portion toward the outer peripheral edge, the fixed electrode rod 1a penetrates the insulating container 20 in an airtight manner, and the movable electrode rod 1b has a bellows. 17, the insulating container 20 penetrates the insulating container 20 in an airtight manner.
The electrode portion is configured by fitting the spacer 2, the reinforcing plate 3, and the electrode 4 to the electrode rod 1, and sandwiching a brazing material of a ring-shaped foil between each member (component) to melt and solidify the brazing material. Then, braze and join. Further, as will be described later, concave portions (7, 8, 10, 11, 13, 14, 15, 16) into which the excess brazing material is poured are appropriately provided in the electrode portions.
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
In addition, the same code | symbol shows the same or an equivalent part between each figure.

実施の形態1
以下、図1〜図3に基づいて実施の形態1の真空バルブの構成を説明する。
実施の形態1では、余剰ろう材を流し込む凹部は、例えば補強板3に貫通孔7を設けることにより形成されている。
貫通孔7が設けられている位置は、電極の溝5の内端部が位置する箇所、すなわち溝5の奥部にあたる部分(電極の溝奥部6)で、補強板3の背面にあるスペーサー2、及び電極棒1の径1Rより内側に設けている。
又貫通孔7の径は、電極の溝奥部6の溝幅より大きく設定されている。
Embodiment 1
Hereinafter, the configuration of the vacuum valve according to the first embodiment will be described with reference to FIGS.
In the first embodiment, the recess into which the surplus brazing material is poured is formed by, for example, providing the through hole 7 in the reinforcing plate 3.
The position where the through hole 7 is provided is a portion where the inner end portion of the groove 5 of the electrode is located, that is, a portion corresponding to the inner portion of the groove 5 (the groove inner portion 6 of the electrode), and a spacer on the back surface of the reinforcing plate 3. 2 and the diameter 1R of the electrode rod 1 are provided inside.
The diameter of the through hole 7 is set to be larger than the groove width of the groove deep part 6 of the electrode.

このように電極の溝奥部6にあたる部分に貫通孔7を設けることにより、ろう付け接合時に、電極の溝奥部6で溶融した余剰の溶融ろう材は、貫通孔7に流れ込み凝固する。
補強板3に設けた貫通孔7は、スペーサー2及び電極棒1の径1Rより内側に設けているため、アークが補強板3の貫通孔7から電極部背面へ侵入しない。
なお、貫通孔7を設けた補強板3は、プレス加工で製作することが可能である。
By providing the through hole 7 in the portion corresponding to the groove deep portion 6 of the electrode in this way, at the time of brazing joining, the excess molten brazing material melted in the electrode groove deep portion 6 flows into the through hole 7 and solidifies.
Since the through hole 7 provided in the reinforcing plate 3 is provided inside the spacer 2 and the diameter 1R of the electrode rod 1, the arc does not penetrate from the through hole 7 of the reinforcing plate 3 to the back surface of the electrode portion.
The reinforcing plate 3 provided with the through holes 7 can be manufactured by press working.

電極部の部分ろう付け接合時に、電極の溝奥部6で溶融した余剰の溶融ろう材は、貫通孔7に流れ込み凝固するため、電極の溝奥部6をろう材が埋めてしまう事象を防止することができる。又電極の溝奥部6の溝幅より貫通孔7の方が大きいため、その防止効果は高い。又、電極の溝奥部6をろう材が埋めてしまう事象を防止することで不良品の発生を抑制し、歩留まりを改善することができる。   At the time of partial brazing of the electrode part, the excess molten brazing material melted in the groove part 6 of the electrode flows into the through-hole 7 and solidifies, so that the phenomenon that the brazing material fills the groove part 6 of the electrode is prevented. can do. Moreover, since the through-hole 7 is larger than the groove width of the groove depth part 6 of an electrode, the prevention effect is high. Further, by preventing the phenomenon that the brazing filler metal fills the groove depth 6 of the electrode, the generation of defective products can be suppressed and the yield can be improved.

最終のろう付け接合時に、電極部の部分ろう付けと同じろう材を使用した場合、再溶融したろう材が電極の溝奥部6を埋めてしまう事象を、電極部の部分ろう付け時と同様に防止できるため、真空バルブの信頼性が向上する。
又、補強板は、ア−クストッパ−とも呼ばれ、補強板3の貫通孔7から電極4の背面へアークが侵入することがないため、電極部背面の汚損を防止することができる。
When using the same brazing material as the partial brazing of the electrode part at the time of final brazing joining, the phenomenon that the remelted brazing material fills the groove depth 6 of the electrode is the same as in the partial brazing of the electrode part. Therefore, the reliability of the vacuum valve is improved.
The reinforcing plate is also called an arc stopper, and since the arc does not enter the back surface of the electrode 4 from the through hole 7 of the reinforcing plate 3, the back surface of the electrode portion can be prevented from being damaged.

図2及び図3では、電極4の背面に補強板3があるため、補強板3に貫通孔7を設けているが、電極4の背面に補強板3以外の部品をろう付け接合する場合、その部品に、電極の溝奥部6の溝幅より大きい径の孔を設ける。その孔を設ける位置は、電極の溝奥部6と接触する部分、すなわち電極の溝奥部6にあたる部分である。
又、電極4の背面にある部品に設ける孔は、図2及び図3のような貫通孔7が好ましいが、貫通していない有底穴であっても良い。
その電極4の背面にある部品に設ける孔の位置は、その部品のさらに背面にある部品の径より内側に設けると良い。
2 and 3, since the reinforcing plate 3 is provided on the back surface of the electrode 4, the reinforcing plate 3 is provided with the through holes 7. When brazing and joining parts other than the reinforcing plate 3 to the back surface of the electrode 4, The part is provided with a hole having a diameter larger than that of the groove depth 6 of the electrode. The position where the hole is provided is a portion in contact with the groove depth 6 of the electrode, that is, a portion corresponding to the groove depth 6 of the electrode.
Moreover, although the hole provided in the component in the back surface of the electrode 4 is preferably the through hole 7 as shown in FIGS. 2 and 3, it may be a bottomed hole that does not penetrate.
The position of the hole provided in the component on the back surface of the electrode 4 is preferably provided inside the diameter of the component on the back surface of the component.

電極4の背面の部品に設ける孔の形状は、図2及び図3のように円形状でも良いが、必ずしもこれに限らず、他の形状でも良い。
例えば、図4及び図5のように電極の背面に補強板3がなく、スペーサー2、電極棒1の順でろう付け接合する場合、スペーサー2に、電極の溝奥部6の溝幅より大きい貫通孔8又は貫通していない有底穴を設ける。その孔(穴)を設ける位置は、電極の溝奥部6と接触する部分であり、貫通孔8又は貫通していない有底穴の形状は、電極の溝奥部6の周りを囲うような長方形の形で、電極棒1の径1Rより内側の位置にその孔(穴)を設けている。
The shape of the hole provided in the component on the back surface of the electrode 4 may be circular as shown in FIGS. 2 and 3, but is not limited to this, and may be other shapes.
For example, when the reinforcing plate 3 is not provided on the back surface of the electrode as shown in FIGS. 4 and 5 and the spacer 2 and the electrode rod 1 are brazed and joined in this order, the spacer 2 is larger than the groove width of the groove depth 6 of the electrode. A through hole 8 or a bottomed hole that does not penetrate is provided. The position where the hole (hole) is provided is a portion in contact with the groove depth 6 of the electrode, and the shape of the through hole 8 or the bottomed hole not penetrating surrounds the electrode groove depth 6. The hole (hole) is provided at a position inside the diameter 1R of the electrode rod 1 in a rectangular shape.

実施の形態2
図6、図7に基づいて実施の形態2の真空バルブの構成を説明する。
上記実施の形態1では補強板3に貫通孔7を設けたが、この実施の形態2では、補強板3に、電極の溝奥部6と交叉するリング状有底溝10を設けたことが特徴である。
このリング状有底溝10の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の大きさであり、その溝深さは、補強板3を貫通しない長さである。
補強板3において、電極の溝奥部6にあたる部分にリング状有底溝10を設けることにより、ろう付け接合時に電極の溝奥部6で溶融したろう材がリング状有底溝10に流れ込み凝固する。リング状有底溝10が貫通していないため、アークが電極の溝5から電極部背面へ侵入しない。
Embodiment 2
The configuration of the vacuum valve according to the second embodiment will be described with reference to FIGS.
In the first embodiment, the through hole 7 is provided in the reinforcing plate 3, but in the second embodiment, the reinforcing plate 3 is provided with the ring-shaped bottomed groove 10 that intersects the groove depth 6 of the electrode. It is a feature.
The groove width of the ring-shaped bottomed groove 10 is equal to or larger than the groove width of the groove deep portion 6 of the electrode, and the groove depth is a length that does not penetrate the reinforcing plate 3.
In the reinforcing plate 3, the ring-shaped bottomed groove 10 is provided in a portion corresponding to the groove depth 6 of the electrode, so that the brazing material melted in the electrode groove depth 6 during brazing joining flows into the ring-shaped bottomed groove 10 and solidifies. To do. Since the ring-shaped bottomed groove 10 does not penetrate, the arc does not penetrate from the groove 5 of the electrode into the back surface of the electrode part.

電極部の部分ろう付け接合時に、電極の溝奥部6で溶融した余剰の溶融ろう材は、リング状有底溝10に流れ込み、当該部で凝固するため電極の溝奥部6をろう材が埋めてしまう事象を防止することができる。
又電極の溝奥部6の溝幅よりリング状有底溝10の溝幅の方が大きいため、その防止効果は高い。又、電極の溝奥部6をろう材が埋めてしまう事象を防止することで不良品の発生を抑制し、歩留まりを改善することができる。
At the time of partial brazing of the electrode part, the surplus molten brazing material melted in the groove part 6 of the electrode flows into the ring-shaped bottomed groove 10 and solidifies in the part, so that the brazing material passes through the groove part 6 of the electrode. The event of filling up can be prevented.
Further, since the groove width of the ring-shaped bottomed groove 10 is larger than the groove width of the groove deep portion 6 of the electrode, the prevention effect is high. Further, by preventing the phenomenon that the brazing filler metal fills the groove depth 6 of the electrode, the generation of defective products can be suppressed and the yield can be improved.

最終のろう付け接合時に、電極部の部分ろう付けと同じろう材を使用した場合、再溶融したろう材が電極の溝奥部6を埋めてしまう事象を、電極部の部分ろう付け時と同様に防止できるため、真空バルブの信頼性が向上する。
実施の形態1と比較して、電極の溝奥部6が補強板背面にあるスペーサー2又は電極棒1の径1Rより外側にあった場合でも、アークによる電極背面への汚損を防止することができる。
When using the same brazing material as the partial brazing of the electrode part at the time of final brazing joining, the phenomenon that the remelted brazing material fills the groove depth 6 of the electrode is the same as in the partial brazing of the electrode part. Therefore, the reliability of the vacuum valve is improved.
Compared to the first embodiment, even when the groove depth 6 of the electrode is outside the spacer 1 on the back surface of the reinforcing plate or the diameter 1R of the electrode rod 1, it is possible to prevent the back surface of the electrode from being damaged by an arc. it can.

図6及び図7では、電極の背面に補強板3があるため、補強板3にリング状有底溝10を設けているが、電極の背面に補強板3以外の部品をろう付け接合する場合、その部品の電極の溝奥部6と接触する部分に、リング状の貫通しない有底溝を設けても良い。その貫通しないリング状有底溝の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の溝幅であると良い。
例えば、図8及び図9に示すように、電極4の背面に補強板3とスペーサー2がなく、電極4が電極棒1に直接重合する場合、電極棒1に、電極の溝奥部6と交叉するよう、リング状有底溝11を設ける。このリング状有底溝11は、電極の溝奥部6の溝幅と同等又はそれ以上の大きさであると良い。
6 and 7, since the reinforcing plate 3 is provided on the back surface of the electrode, the ring-shaped bottom groove 10 is provided on the reinforcing plate 3. However, when parts other than the reinforcing plate 3 are brazed and joined to the back surface of the electrode. In addition, a ring-shaped bottomed groove that does not penetrate may be provided in a portion that contacts the groove deep portion 6 of the electrode of the component. The groove width of the ring-shaped bottomed groove that does not penetrate is preferably equal to or larger than the groove width of the groove back portion 6 of the electrode.
For example, as shown in FIGS. 8 and 9, when the reinforcing plate 3 and the spacer 2 are not provided on the back surface of the electrode 4 and the electrode 4 is directly polymerized to the electrode rod 1, A ring-shaped bottomed groove 11 is provided so as to cross. The ring-shaped bottomed groove 11 is preferably equal to or larger than the groove width of the groove depth portion 6 of the electrode.

実施の形態3
図10に基づいて実施の形態3の真空バルブの構成を説明する。
上記実施の形態1では補強板3に貫通孔7を設けたが、この実施の形態3では、補強板3に、この補強板3が電極の溝奥部6と接触しないよう且つ電極の溝奥部6と交叉する螺旋状有底溝13を設けたことが特徴である。
螺旋状有底溝13の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の大きさであり、その溝深さは、補強板3を貫通しない長さである。
又、補強板の螺旋状有底溝13は、電極の溝5に沿って設けることが好ましい。
Embodiment 3
Based on FIG. 10, the structure of the vacuum valve of Embodiment 3 is demonstrated.
In the first embodiment, the through hole 7 is provided in the reinforcing plate 3. However, in the third embodiment, the reinforcing plate 3 is not in contact with the deep groove portion 6 of the electrode and the deep groove of the electrode. A feature is that a spiral bottomed groove 13 intersecting with the portion 6 is provided.
The groove width of the spiral bottomed groove 13 is equal to or greater than the groove width of the groove depth portion 6 of the electrode, and the groove depth is a length that does not penetrate the reinforcing plate 3.
Further, the spiral bottomed groove 13 of the reinforcing plate is preferably provided along the groove 5 of the electrode.

この実施の形態3では、電極の背面に補強板3があるため、補強板3に螺旋状有底溝13を設けているが、電極の背面に補強板3以外の部品をろう付け接合する場合、その部品に、電極の溝奥部6と接触する螺旋状有底溝を設けても良い。
又、電極の背面に螺旋状有底溝を設ける場合は、電極の溝5に沿って設けることが好ましい。
その螺旋状有底溝の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の溝幅であると良い。
In Embodiment 3, since the reinforcing plate 3 is provided on the back surface of the electrode, the spiral bottomed groove 13 is provided on the reinforcing plate 3. However, when parts other than the reinforcing plate 3 are brazed and joined to the back surface of the electrode. The part may be provided with a spiral bottomed groove in contact with the groove depth 6 of the electrode.
Moreover, when providing a spiral bottomed groove | channel on the back surface of an electrode, it is preferable to provide along the groove | channel 5 of an electrode.
The groove width of the spiral bottomed groove is preferably equal to or greater than the groove width of the groove back portion 6 of the electrode.

螺旋状有底溝13を電極の溝奥部6にあたる部分に設けることにより、ろう付け接合時に電極の溝奥部6で溶融したろう材が螺旋状有底溝13に流れ込み凝固するが、螺旋状有
底溝13が貫通していないため、アークが電極の溝5から電極部背面へ侵入しない。
By providing the spiral bottomed groove 13 in the portion corresponding to the groove depth 6 of the electrode, the brazing material melted in the groove depth 6 of the electrode during brazing joining flows into the spiral bottomed groove 13 and solidifies. Since the bottomed groove 13 does not penetrate, the arc does not penetrate from the groove 5 of the electrode into the back surface of the electrode portion.

部分ろう付け接合時に、電極の溝奥部6で溶融したろう材が、補強板3の螺旋状有底溝13に流れ込み凝固するため電極の溝奥部6をろう材が埋めてしまう事象を防止することができる。
螺旋状有底溝13の溝幅が電極の溝奥部6の溝幅と同等又はそれ以上の大きさであると、電極の溝奥部6がろう材で埋まり難いため、その防止効果は高い。又、電極の溝奥部6をろう材が埋めてしまう事象を防止することで不良品の発生を抑制し、歩留まりを改善することができる。
最終ろう付け接合時に、部分ろう付けと同じろう材を使用した場合、再溶融したろう材が電極の溝奥部6を埋めてしまう事象を部分ろう付け接合時と同様に防止できるため、真空バルブの信頼性が向上する。
At the time of partial brazing joining, the brazing material melted at the groove deep part 6 of the electrode flows into the spiral bottomed groove 13 of the reinforcing plate 3 and solidifies, so that the brazing material is buried in the groove deep part 6 of the electrode. can do.
If the groove width of the spiral bottomed groove 13 is equal to or larger than the groove width of the electrode groove back portion 6, the electrode groove back portion 6 is difficult to be filled with the brazing material, and the prevention effect is high. . Further, by preventing the phenomenon that the brazing filler metal fills the groove depth 6 of the electrode, the generation of defective products can be suppressed and the yield can be improved.
When the same brazing material as that used for partial brazing is used at the time of final brazing, a vacuum valve can prevent the phenomenon that the remelted brazing material fills the groove depth 6 of the electrode as in the case of partial brazing. Reliability is improved.

実施の形態1と比較して、電極の溝奥部6が補強板3の背面にあるスペーサー2の径2Rより外側にあった場合でも、アークによる電極背面への汚損を防止することが出来る。
電極の溝5に沿って補強板3に螺旋状有底溝13を設けた場合、電極部組立時に電極の溝5の間から補強板3の螺旋状有底溝13を確認することができ、位置合わせが容易で組立てやすい。
As compared with the first embodiment, even when the groove depth 6 of the electrode is outside the diameter 2R of the spacer 2 on the back surface of the reinforcing plate 3, it is possible to prevent the back of the electrode from being damaged by an arc.
When the spiral bottomed groove 13 is provided in the reinforcing plate 3 along the electrode groove 5, the spiral bottomed groove 13 of the reinforcing plate 3 can be confirmed from between the electrode grooves 5 during assembly of the electrode part. Easy alignment and easy assembly.

この実施の形態3では、電極の背面にある部品に螺旋状有底溝13を設けているが、その変形例として、図11に示すように電極の溝奥部6から外方へ放射状に延びる放射状有底溝14を設けても良い。   In the third embodiment, the spiral bottomed groove 13 is provided in the part on the back surface of the electrode. As a modification thereof, as shown in FIG. 11, it extends radially outward from the groove depth 6 of the electrode. A radial bottomed groove 14 may be provided.

実施の形態4
図12、図13に基づいて実施の形態4の真空バルブの構成を説明する。
上記実施の形態1では補強板3に貫通孔7を設けたが、この実施の形態4では、電極4自体の背面側に、リング状有底溝15を、電極背面の溝奥部6に位置し且つ電極背面の溝奥部6が補強板3と接触しないようにして設けたことが特徴である。
このリング状有底溝15の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の大きさであり、その溝深さは、電極を貫通しない大きさである。
又、電極4の背面に、電極棒1、スペーサー2、又は補強板3以外の部品を、ろう付け接合する場合には、その電極背面にある部品と電極背面の溝奥部6が接触しないように、電極背面にリング状有底溝15を設ける。その有底溝15の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の大きさであると良い。
Embodiment 4
Based on FIG. 12, FIG. 13, the structure of the vacuum valve of Embodiment 4 is demonstrated.
In the first embodiment, the reinforcing plate 3 is provided with the through-hole 7, but in the fourth embodiment, the ring-shaped bottomed groove 15 is positioned on the back surface side of the electrode 4 itself and the groove back portion 6 on the back surface of the electrode. In addition, the groove back portion 6 on the back surface of the electrode is provided so as not to contact the reinforcing plate 3.
The groove width of the ring-shaped bottomed groove 15 is equal to or larger than the groove width of the groove depth portion 6 of the electrode, and the groove depth is a size that does not penetrate the electrode.
In addition, when parts other than the electrode rod 1, spacer 2, or reinforcing plate 3 are brazed and joined to the back surface of the electrode 4, the parts on the back surface of the electrode and the groove depth 6 on the back surface of the electrode are not in contact with each other. In addition, a ring-shaped bottomed groove 15 is provided on the back surface of the electrode. The groove width of the bottomed groove 15 is preferably equal to or larger than the groove width of the groove back portion 6 of the electrode.

電極の溝奥部6が補強板3と接触しないように電極背面側にリング状有底溝15を設けることにより、ろう付け接合時に電極の溝奥部6で溶融したろう材が電極背面側のリング状有底溝15に流れ込み凝固する。
この場合、補強板3には貫通した孔又は溝がないため、電極の溝5からア−クが電極背面に侵入することがない。
電極4を削り加工で製作した場合、リング状有底溝15は追加加工で作ることができる。
By providing the ring-shaped bottomed groove 15 on the back side of the electrode so that the back of the groove 6 of the electrode does not come into contact with the reinforcing plate 3, the brazing material melted at the back of the groove 6 of the electrode during brazing joining It flows into the ring-shaped bottomed groove 15 and solidifies.
In this case, since the reinforcing plate 3 does not have a through hole or groove, the arc does not enter the electrode back surface from the groove 5 of the electrode.
When the electrode 4 is manufactured by cutting, the ring-shaped bottomed groove 15 can be formed by additional processing.

電極部の部分ろう付け接合時に、電極の溝奥部6で溶融した余剰ろう材は、電極背面側に設けたリング状有底溝15に流れ込み凝固するため、電極の溝奥部6をろう材が埋めてしまう事象を防止することができる。
電極背面側に設けたリング状有底溝15の溝幅は、電極の溝奥部6の溝幅と同等又はそれ以上の大きさであるため、その防止効果は高い。又、電極の溝奥部6をろう材が埋めてしまう事象を防止することで不良品の発生を抑制し、歩留まりを改善することができる。
最終ろう付け接合時に、部分ろう付けと同じろう材を使用した場合、再溶融したろう材
が電極の溝奥部6を埋めてしまう事象を防止できるため、真空バルブの信頼性が向上する。
At the time of partial brazing and joining of the electrode part, the surplus brazing material melted at the groove depth 6 of the electrode flows into the ring-shaped bottomed groove 15 provided on the back side of the electrode and solidifies. Can be prevented from filling.
Since the groove width of the ring-shaped bottomed groove 15 provided on the back surface side of the electrode is equal to or larger than the groove width of the groove back portion 6 of the electrode, the prevention effect is high. Further, by preventing the phenomenon that the brazing filler metal fills the groove depth 6 of the electrode, the generation of defective products can be suppressed and the yield can be improved.
When the same brazing material as that used for partial brazing is used at the time of final brazing joining, it is possible to prevent the remelted brazing material from filling the groove depth 6 of the electrode, thereby improving the reliability of the vacuum valve.

実施の形態1と比較して、電極の溝奥部6が補強板背面にあるスペーサー2の径2R、又は電極棒1の径1Rより外側にあった場合でも、実施の形態2と同様にアークによる電極背面への汚損を防止することができる。
電極を削り加工で製作する場合、実施の形態4の電極4は、加工工程中に電極背面側にリング状有底溝15を削る工程を追加するだけで製作することができる。そのため、電極の削り加工費に安価な追加加工費を加えるだけで、上記実施の形態3と同等の効果を得ることができる。
Compared to the first embodiment, even when the groove depth 6 of the electrode is outside the diameter 2R of the spacer 2 on the back surface of the reinforcing plate or the diameter 1R of the electrode rod 1, the arc is the same as in the second embodiment. It is possible to prevent the back surface of the electrode from being soiled.
When the electrode is manufactured by shaving, the electrode 4 according to the fourth embodiment can be manufactured only by adding a step of cutting the ring-shaped bottomed groove 15 on the back side of the electrode during the processing step. Therefore, an effect equivalent to that of the third embodiment can be obtained only by adding an inexpensive additional machining cost to the electrode machining cost.

この実施の形態4では、電極4の背面側にリング状有底溝15を設けているが、その変形例として、図14及び図15に示すように、電極背面の溝奥部6が電極背面の部品と接触しないようにして、電極4を貫通しない深さを有する円盤状有底穴16を設けても良い。   In the fourth embodiment, a ring-shaped bottomed groove 15 is provided on the back side of the electrode 4, but as a modification thereof, as shown in FIGS. A disk-shaped bottomed hole 16 having a depth not penetrating the electrode 4 may be provided so as not to contact the parts.

なお、この発明は、その発明の範囲内において、各実施の形態を組み合わせたり、各実施の形態を適宜、変形、省略することが可能である。   It should be noted that within the scope of the present invention, the embodiments can be combined, or the embodiments can be appropriately modified and omitted.

1 電極棒(固定電極棒1a、可動電極棒1b)
1R 電極棒の径
2 スペーサー(固定電極側スペーサー2a、可動電極側スペーサー2b)
2R スペーサーの径
3 補強板(固定電極側補強板3a、可動電極側補強板3b)
4 電極(固定電極4a、可動電極4b)
5 電極の溝
6 電極の溝奥部(溝5の内端部)
7 補強板の貫通孔
8 スペーサーの貫通孔
10 補強板のリング状有底溝
11 電極棒のリング状有底溝
13 補強板の螺旋状有底溝
14 補強板の放射状有底溝
15 電極背面側のリング状有底溝
16 電極背面側の円盤状有底穴
17 ベローズ
18 端板
19 シールド
20 絶縁容器。
1 electrode rod (fixed electrode rod 1a, movable electrode rod 1b)
1R Diameter of electrode rod 2 Spacer (fixed electrode side spacer 2a, movable electrode side spacer 2b)
2R Spacer diameter 3 Reinforcing plate (fixed electrode side reinforcing plate 3a, movable electrode side reinforcing plate 3b)
4 electrodes (fixed electrode 4a, movable electrode 4b)
5 Groove of electrode 6 Groove depth of electrode (inner end of groove 5)
7 Reinforcing plate through hole 8 Spacer through hole 10 Reinforcing plate ring-shaped bottomed groove 11 Electrode rod ring-shaped bottomed groove 13 Reinforcing plate spiral bottomed groove 14 Reinforcing plate radial bottomed groove 15 Electrode back side Ring-shaped bottomed groove 16 Disc-shaped bottomed hole on the electrode back side 17 Bellows 18 End plate 19 Shield 20 Insulating container.

Claims (7)

中央部から外周縁部に向かって複数の溝が形成され、絶縁容器を貫通した固定電極棒の内端部に装着された固定電極、及び中央部から外周縁部に向かって複数の溝が形成され、上記絶縁容器を出入り自在に貫通した可動電極棒の内端部に装着されて上記固定電極と離接する可動電極を備え、上記固定電極と上記固定電極棒間、及び上記可動電極と上記可動電極棒間は、それぞれろう付け接合された真空バルブにおいて、上記固定電極と可動電極、又はこれらの電極に対向して設けられた部材には、上記溝の内端部が位置する箇所に、余剰溶融ろう材を流し込む凹部を設けたことを特徴とする真空バルブ。 A plurality of grooves are formed from the central portion toward the outer peripheral edge, and a plurality of grooves are formed from the central portion to the outer peripheral edge, and a fixed electrode attached to the inner end portion of the fixed electrode rod penetrating the insulating container. A movable electrode that is attached to an inner end of a movable electrode bar that passes through the insulating container so as to freely come in and out of contact with the fixed electrode, and is provided between the fixed electrode and the fixed electrode bar, and between the movable electrode and the movable electrode. Between the electrode rods, in the vacuum valves brazed and joined , the fixed electrode and the movable electrode, or the member provided opposite to these electrodes, have a surplus at the location where the inner end of the groove is located. A vacuum valve provided with a recess into which a molten brazing material is poured. 上記凹部は、電極棒、電極のスペーサー、及び電極の補強板のうちいずれかの部材、又は上記電極に設けたことを特徴とする請求項1に記載の真空バルブ。 It said recess, conductive Gokubo, either member of the reinforcing plate of the spacer of the electrode, and the electrode or the vacuum valve according to claim 1, characterized in that provided on the electrode. 上記凹部は、電極棒の外径よりも内側に配置したことを特徴とする請求項1又は請求項2に記載の真空バルブ。 The recess is vacuum valve according to claim 1 or claim 2, characterized in that disposed inside the outer diameter of the conductive Gokubo. 上記凹部は、貫通孔又は有底穴で形成したことを特徴とする請求項1〜請求項3のいずれか1項に記載の真空バルブ。   The said recessed part was formed with the through-hole or the bottomed hole, The vacuum valve of any one of Claims 1-3 characterized by the above-mentioned. 上記凹部は、リング状、螺旋状、直線状の有底溝のうちいずれかの有底溝で形成したことを特徴とする請求項1〜請求項3のいずれか1項に記載の真空バルブ。   The vacuum valve according to any one of claims 1 to 3, wherein the concave portion is formed of any one of a bottomed groove of a ring shape, a spiral shape, and a linear shape. 上記貫通孔及び上記有底穴は、上記溝の内端部の溝幅よりも大きくしたことを特徴とする請求項4記載の真空バルブ。 The through hole and the blind hole, the vacuum valve according to claim 4, characterized in that larger than the groove width of the inner end of the groove. 上記有底溝は、上記溝の内端部の溝幅よりも大きくしたことを特徴とする請求項5に記載の真空バルブ。The vacuum valve according to claim 5, wherein the bottomed groove is larger than a groove width of an inner end portion of the groove.
JP2012010692A 2012-01-23 2012-01-23 Vacuum valve Active JP5901306B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012010692A JP5901306B2 (en) 2012-01-23 2012-01-23 Vacuum valve

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2012010692A JP5901306B2 (en) 2012-01-23 2012-01-23 Vacuum valve

Publications (3)

Publication Number Publication Date
JP2013149545A JP2013149545A (en) 2013-08-01
JP2013149545A5 JP2013149545A5 (en) 2015-01-15
JP5901306B2 true JP5901306B2 (en) 2016-04-06

Family

ID=49046845

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012010692A Active JP5901306B2 (en) 2012-01-23 2012-01-23 Vacuum valve

Country Status (1)

Country Link
JP (1) JP5901306B2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113678219A (en) * 2019-04-23 2021-11-19 三菱电机株式会社 Vacuum valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH06150784A (en) * 1992-11-04 1994-05-31 Toshiba Corp Vacuum valve
JPH09190744A (en) * 1996-01-10 1997-07-22 Mitsubishi Electric Corp Vacuum circuit breaker and manufacture thereof
JP2000208010A (en) * 1999-01-19 2000-07-28 Mitsubishi Electric Corp Vacuum circuit breaker
JP2005135778A (en) * 2003-10-31 2005-05-26 Hitachi Ltd Electric contact and its manufacturing method, electrode for vacuum bulb, vacuum bulb using it, and vacuum interrupter

Also Published As

Publication number Publication date
JP2013149545A (en) 2013-08-01

Similar Documents

Publication Publication Date Title
JP4862204B2 (en) Solid electrolytic capacitor
CN100413003C (en) Solid electrolytic capacitor and producing method thereof
WO2016204038A1 (en) Resistor and method for manufacturing same
JP5583991B2 (en) Fuse and method for manufacturing fuse
JP5901306B2 (en) Vacuum valve
JP2014173683A (en) Rivet, different member connecting structure with rivet and method for manufacturing different member connecting body
JP4183091B2 (en) Surface mount type solid electrolytic capacitor and manufacturing method thereof
JP2016110859A (en) Current cutoff device and secondary battery
KR102085808B1 (en) Blade fuse
JP2011134624A (en) Bimetal circuit breaker
KR101542172B1 (en) Welding tip and manufacturing method thereof
JP6488460B2 (en) Film capacitor
JP5210816B2 (en) Vacuum valve
JP6115257B2 (en) Vacuum valve
JP2011014295A (en) Manufacturing method for plasma electrode, and plasma electrode
CN110919118A (en) Welding method with welding surface provided with cavity
JP5897712B2 (en) Manufacturing method of integral member and integral member
JP2005251856A (en) Semiconductor device
JP2019204651A (en) Vacuum valve
JP2016036831A (en) Brazing structure
JP2007073874A (en) Semiconductor device and metal cap used therefor
JP6967431B2 (en) How to make a shunt resistor
JP2009274091A (en) Method for manufacturing electric contacter
JP2007267437A (en) Ring varistor
JP6187189B2 (en) Vacuum valve and vacuum circuit breaker equipped with this vacuum valve

Legal Events

Date Code Title Description
A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20141121

A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20141121

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20150727

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150804

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150903

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20160209

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20160308

R151 Written notification of patent or utility model registration

Ref document number: 5901306

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250