JPH023270Y2 - - Google Patents

Description

【考案の詳細な説明】 (1) 考案の技術分野 本考案は共通電極と複数の個別電極とを備える
ガス入放電管形多極避雷器の構造に関する。[Detailed Description of the Invention] (1) Technical Field of the Invention The present invention relates to the structure of a gas-filled discharge tube type multipolar lightning arrester comprising a common electrode and a plurality of individual electrodes.

(2) 従来技術とその問題点 従来、交換機などに使用されるガス入放電管形
多極避雷器は、第１図ａ，ｂに示すような構造に
なつている。即ち、環状の中間電極１の両側に絶
縁管２，２を備え、各絶縁管２，２の各両端にキ
ヤツプ状の端部電極３，３を備える。上記絶縁管
２，２の内部にはガスが気密封入されており、端
部電極３，３と中間電極１にはそれぞれ端子４，
５が固設されている。また、絶縁管２，２の内壁
面には初期放電を誘導する導電線６，６が施され
ている。この導電線６，６と中間電極１との間
は、中間電極１と端部電極３との間に形成される
主放電間隙ｌ１よりも短いトリガ放電間隙ｌ２に
形成されている。(2) Prior art and its problems Conventionally, gas-filled discharge tube multipole lightning arresters used in switchboards and the like have a structure as shown in Figures 1a and 1b. That is, insulating tubes 2, 2 are provided on both sides of an annular intermediate electrode 1, and cap-shaped end electrodes 3, 3 are provided at both ends of each insulating tube 2, 2. Gas is hermetically sealed inside the insulating tubes 2, 2, and the end electrodes 3, 3 and the intermediate electrode 1 have terminals 4,
5 is fixed. Further, conductive wires 6, 6 for inducing initial discharge are provided on the inner wall surfaces of the insulating tubes 2, 2. A trigger discharge gap l2 is formed between the conductive wires 6, 6 and the intermediate electrode 1, which is shorter than the main discharge gap l1 formed between the intermediate electrode 1 and the end electrode 3.

しかし、上記構造にあつては、中間電極１の両
側に絶縁管２を介装した状態で端部電極３，３を
備えるために、多極以上にする場合には避雷器を
絶縁管の軸心方向へ延長する構造になる。このた
め、多数の線路を収容する交換機などにあつて
は、交換機などを構成する電子部品が小型化され
てきているにもかかわらず、避雷器の実装スペー
スによる小型化を図ることができない。 However, in the above structure, since the end electrodes 3 and 3 are provided with the insulating tube 2 interposed on both sides of the intermediate electrode 1, when the number of poles is more than 1, the arrester must be placed at the center of the axis of the insulating tube. It becomes a structure that extends in the direction. For this reason, in the case of switching equipment that accommodates a large number of lines, it is not possible to achieve miniaturization due to the mounting space for lightning arresters, even though the electronic components that make up the switching equipment and the like are becoming smaller.

しかも、導電線６，６は、中間電極１と端部電
極３間に平坦に位置する管壁面に設けられている
ので、放電時のスパツタリング現象による飛散し
た金属微粉末が、導電線６，６と中間電極１の間
ならびに導電線６，６と端部電極３，３の間に蒸
着し、早期にトリガ放電間隙ｌ２が短絡し、放電
寿命が短い実情にある。 Moreover, since the conductive wires 6, 6 are provided on the tube wall surface located flat between the intermediate electrode 1 and the end electrode 3, the metal fine powder scattered due to the sputtering phenomenon during discharge can be removed from the conductive wires 6, 6. and the intermediate electrode 1 as well as between the conductive wires 6, 6 and the end electrodes 3, 3, and the trigger discharge gap l2 is short-circuited at an early stage, resulting in a short discharge life.

(3) 考案の目的 本考案の目的は前述した従来の実情に鑑み、実
装スペースが小さく、繰返し耐量の大きいガス入
放電管形多極避雷器を提供することにある。(3) Purpose of the invention In view of the above-mentioned conventional situation, the purpose of the present invention is to provide a gas-filled discharge tube type multi-polar lightning arrester that requires a small mounting space and has a high repeated durability.

(4) 考案の構成 上記目的を達成するために、本考案の構成は、
絶縁体ベースとこの対向側の封止用絶縁体ベース
とで封止ガス空間を形成し、上記絶縁体ベースに
は長尺の共通電極とその巾方向両側の多数の個別
電極を突出配置して同一平面に放電間隙を多数形
成し、上記共通電極には個別電極の配置位置毎に
貫通孔を貫通し、前記封止用絶縁体ベースには各
放電間隙間に位置して放電間隙距離よりも短い距
離まで凸部を２条突出し、この凸部の突出端面に
は個別電極の配置位置毎に導電材を設けたことを
特徴とするものである。(4) Structure of the invention In order to achieve the above purpose, the structure of the invention is as follows:
A sealing gas space is formed by the insulator base and a sealing insulator base on the opposite side, and a long common electrode and a large number of individual electrodes on both sides of the common electrode are arranged protruding from the insulator base. A large number of discharge gaps are formed on the same plane, a through hole is formed in the common electrode at each position of the individual electrode, and a through hole is formed in the sealing insulator base to be located in each discharge gap, and a hole is formed in the sealing insulator base, and a through hole is formed in the common electrode at each position of the individual electrode. The device is characterized in that two protrusions are protruded over a short distance, and a conductive material is provided on the protruding end surface of each of the protrusions at each position where the individual electrodes are arranged.

(5) 考案の実施例 以下、第２図〜第７図について本考案の施され
たガス入放電管形多極避雷器の一実施例の詳細を
説明する。(5) Embodiment of the invention Hereinafter, an embodiment of the gas-filled discharge tube type multipolar lightning arrester according to the invention will be explained in detail with reference to FIGS. 2 to 7.

このガス入放電管形多極避雷器は、第２図示の
ように長方体に形成された絶縁体ベース１０を備
え、この絶縁体ベース１０の中央部には共通電極
２０を備える。この共通電極２０の両側に位置す
る絶縁体ベース１０には多数個の個別電極３０，
３０…が並設される。また、共通電極２０と個別
電極３０の反対側に位置する絶縁体ベース１０に
は封止用の絶縁体ベース４０を備える。 This gas-filled discharge tube type multipolar lightning arrester includes an insulator base 10 formed in a rectangular shape as shown in the second figure, and a common electrode 20 in the center of the insulator base 10. The insulator base 10 located on both sides of this common electrode 20 has a large number of individual electrodes 30,
30... are arranged in parallel. Further, the insulator base 10 located on the opposite side of the common electrode 20 and the individual electrodes 30 is provided with an insulator base 40 for sealing.

上記絶縁体ベース１０には第３図、第４図に示
すように上方に開放された空室１１が形成されて
おり、この空室１１の底面を形成する絶縁体ベー
ス１０の同一平面には上記共通電極２０と各個別
電極３０，３０…が突出される。これらの共通電
極２０と各個別電極３０，３０…は空室１１の下
部に位置している。 As shown in FIGS. 3 and 4, the insulator base 10 is formed with a cavity 11 that is open upward, and the same plane of the insulator base 10 that forms the bottom surface of this cavity 11 is The common electrode 20 and each individual electrode 30, 30, . . . are protruded. These common electrode 20 and each individual electrode 30, 30, . . . are located at the lower part of the cavity 11.

上記共通電極２０は第５図示のように絶縁体ベ
ース１０に気密封着状態で埋込まれる基部２１を
備える。この基部２１は角柱状になつており、長
方形の一表面には、基部２１よりも小形な放電々
極２２を備える。この放電々極２２は基部２１と
の付根部分が絶縁体ベース１０に埋込まれ、その
他の部分は空室１１内に位置される。そして、こ
の空室１１に位置される放電々極２２には多数個
の貫通孔２３，２３…が貫通され、各貫通孔２３
は上記個別電極毎に対向配置される。 The common electrode 20 includes a base portion 21 that is embedded in the insulator base 10 in a hermetically sealed state as shown in the fifth figure. The base 21 has a prismatic shape, and a discharge electrode 22 smaller than the base 21 is provided on one surface of the rectangle. The base portion of the discharge electrode 22 with respect to the base portion 21 is embedded in the insulator base 10, and the other portion is located within the empty chamber 11. A large number of through holes 23, 23, .
are arranged to face each of the individual electrodes.

また、放電々極２２の反対側の基部２１の他表
面には端子２４，２４を備える。これらの端子２
４は第１図、第４図示のように、絶縁体ベース１
０の底面外表面に突出される。 Further, the other surface of the base 21 on the opposite side of the discharge electrode 22 is provided with terminals 24 , 24 . These terminals 2
4 is an insulator base 1 as shown in FIGS. 1 and 4.
0 protrudes from the bottom outer surface.

上記各個別電極３０は第６図示のように絶縁体
ベース１０に気密封着状態で埋込まれる円柱状の
基部３１を備え、この基部３１の一端面には放
電々極３２を備える。この放電々極３２の厚さと
幅は基部３１の一端面の外径よりも小さくなつて
おり、この放電々極３２は基部３１との付根部分
が絶縁ベース１０に埋込まれその他の部分は空室
１１内に位置される。また、放電々極３２の反対
側の基部３１の他端面には端子３３を備える。こ
の端子３３は第１図、第４図示のように絶縁体ベ
ース１０の底面外表面に突出される。 As shown in FIG. 6, each of the individual electrodes 30 has a cylindrical base 31 that is hermetically sealed in the insulator base 10, and a discharge electrode 32 is provided on one end surface of the base 31. The thickness and width of this discharge electrode 32 are smaller than the outer diameter of one end surface of the base 31, and the root part of this discharge electrode 32 with respect to the base 31 is embedded in the insulating base 10, and the other part is empty. It is located within the chamber 11. Further, a terminal 33 is provided on the other end surface of the base portion 31 on the opposite side of the discharge electrode 32. This terminal 33 is projected from the bottom outer surface of the insulator base 10 as shown in FIGS. 1 and 4.

上記封止用の絶縁体ベース４０は第７図示のよ
うにセラミツクからなつており、空室１１の周囲
を構成する絶縁体ベース１０の周壁の頂面に被冠
される平板状の基部４１を備え、この基部４１の
外形は絶縁体ベース１０の周壁と略同形になつて
いる。空室１１側に位置する基部４１の表面には
柱状の凸部４２，４２を２条備える。各凸部４
２，４２の突出端面には多数本の導電材４３，４
３…を備える。また、上記各凸部４２，４２は第
４図示のように共通電極２０と個別電極３０との
間に位置され、各放電々極２２，３２と凸部４２
とは互いに離間されている。そして、上記導電材
４３，４３…は個別電極３０の各放電々極３２，
３２…毎に配される。各導電材４３は放電々極３
２と放電々極２２の最短距離となる直線状態のカ
ーボン線で罫書してある。 The insulator base 40 for sealing is made of ceramic as shown in FIG. The outer shape of this base portion 41 is approximately the same as the peripheral wall of the insulator base 10. The surface of the base 41 located on the side of the empty chamber 11 is provided with two columnar convex portions 42, 42. Each convex portion 4
A large number of conductive materials 43, 4 are provided on the protruding end surfaces of 2, 42.
3... is provided. Further, the respective convex portions 42, 42 are located between the common electrode 20 and the individual electrodes 30 as shown in the fourth figure, and the respective discharge poles 22, 32 and the convex portions 42
are separated from each other. The conductive materials 43, 43, . . . each discharge electrode 32 of the individual electrode 30,
Arranged every 32... Each conductive material 43 is a discharge electrode 3
2 and the discharge electrode 22 are marked with a straight carbon wire.

ところで、第４図示のように上記導電材４３，
４３…と各放電々極２２，３２との距離ｌ３は、
放電々極２２と放電々極３２との距離ｌ４よりも
小さい。 By the way, as shown in the fourth diagram, the conductive material 43,
The distance l3 between 43... and each discharge pole 22, 32 is
It is smaller than the distance l4 between the discharge poles 22 and 32.

また、空室１１には絶縁体ベース１０に絶縁体
ベース４０、共通電極２０ならびに個別電極３０
がロー付などによつて封着された状態において、
真空引きされた後に適当な不活性ガスが適量封入
されている。 In addition, the vacant room 11 includes an insulator base 10, an insulator base 40, a common electrode 20, and an individual electrode 30.
is sealed by brazing etc.,
After being evacuated, an appropriate amount of inert gas is filled in.

なお、符号Ｇは上記放電々極２２，３２に付着
された低仕事関係の塗布材である。 Incidentally, the reference numeral G indicates a low-work-related coating material attached to the discharge electrodes 22, 32.

以上のように構成された前記実施例によれば、
個別電極３０に雷サージ等が印加された場合、個
別電極３０−導電材４３−共通電極２０の間に初
期放電を生じ、この初期放電をトリガとして個別
電極３０と共通電極２０との間に主放電が続き、
雷サージが大地放流される。 According to the embodiment configured as above,
When a lightning surge or the like is applied to the individual electrode 30, an initial discharge occurs between the individual electrode 30, the conductive material 43, and the common electrode 20, and this initial discharge is used as a trigger to cause a main discharge between the individual electrode 30 and the common electrode 20. The discharge continues,
Lightning surge is released into the earth.

さて、主放電によつて、空室１１内にスパツタ
リング現象が生じるが、導電材４３は凸部４２の
突出端面に設けられており、スパツタリング現象
により飛散した金属微粉末は凸部４２の突出端面
の障壁効果により、凸部４２の側壁面４２ａから
離散し、基部４１の表面に付着する。換言するな
らば、凸部４２の側壁面４２ａの汚染防止によ
り、導電材４３と各放電々極２２，３２の沿面距
離が長くなつたことである。 Now, a sputtering phenomenon occurs in the cavity 11 due to the main discharge, but since the conductive material 43 is provided on the protruding end surface of the convex part 42, the metal fine powder scattered by the sputtering phenomenon will be removed from the protruding end face of the convex part 42. Due to the barrier effect, the particles are separated from the side wall surface 42a of the convex portion 42 and attached to the surface of the base portion 41. In other words, by preventing contamination of the side wall surface 42a of the convex portion 42, the creeping distance between the conductive material 43 and each discharge electrode 22, 32 is increased.

しかも、共通電極２０と多数個の個別電極３０
とが同一の空室１１内に位置されているので、い
ずれかの個別電極３０と共通電極２０との間で導
電材４３を介する初期放電が行なわれた場合、こ
の初期放電が空室１１内に同時に波及する。とく
に、共通電極２０には貫通孔２３，２３…が穿た
れているので、空室１１内の同一雰囲気化の波及
効果が良い。この場合、各貫通孔２３が個別電極
３０毎に対応しているので、共通電極２０両側の
個別電極３０，３０間での放電の波及効果が速や
かである。また、導電材４３と放電々極２２，３
２の間隙が最短距離なので、初期放電が速やかに
なる。 Moreover, the common electrode 20 and a large number of individual electrodes 30
are located in the same empty chamber 11, so if an initial discharge occurs between any of the individual electrodes 30 and the common electrode 20 via the conductive material 43, this initial discharge will occur within the empty chamber 11. at the same time. In particular, since the common electrode 20 is provided with the through holes 23, 23, . In this case, since each through hole 23 corresponds to each individual electrode 30, the ripple effect of the discharge between the individual electrodes 30 on both sides of the common electrode 20 is rapid. In addition, the conductive material 43 and the discharge electrodes 22, 3
Since the gap 2 is the shortest distance, the initial discharge is quick.

(6) 考案の効果 以上説明したように本考案によれば、次のよう
な効果がある。(6) Effects of the invention As explained above, the invention has the following effects.

(イ) 絶縁体ベースの同一平面に突出した共通電極
と個別電極とに対して、対向側の封止用絶縁体
ベースから各放電間隙間に位置して放電間隙距
離よりも短い距離まで凸部を２条突出する構造
とすることによつて、ガス漏れの無い封着構造
としたうえで、沿面距離を長くした多極電極接
近構造にでき、実装スペースの小さなプリント
基板装着用の多極避雷器を提供することができ
た。(b) For the common electrode and individual electrodes that protrude on the same plane of the insulator base, a convex portion is located in each discharge gap from the sealing insulator base on the opposite side to a distance shorter than the discharge gap distance. By creating a structure with two protruding strips, it is possible to create a sealed structure without gas leakage, and a multi-pole electrode close structure with a long creepage distance, making it possible to create a multi-pole lightning arrester for mounting on a printed circuit board with a small mounting space. were able to provide.

(ロ) 共通電極と個別電極との各放電間隙間に位置
する対向側の封止用絶縁体ベースから放電間隙
距離よりも短い距離まで凸部を２条突出すると
ともに、この凸部の突出端面には個別電極の配
置位置毎に導電材を設ける構造であるので、導
電材を最も近づけた状態での早期の初期放電を
可能とでき、しかも、貫通孔を介して初期放電
を平衡極側へ直接的に波及させることができ
る。(b) Two protrusions protrude from the sealing insulator base on the opposite side located in each discharge gap between the common electrode and the individual electrodes to a distance shorter than the discharge gap distance, and the protruding end surface of the protrusion Since the structure is such that a conductive material is provided at each position of the individual electrode, early initial discharge can be performed with the conductive material closest to the electrode, and the initial discharge can be directed to the balanced pole side through the through hole. It can have a direct impact.

(ハ) 封止用絶縁体ベースから放電間隙距離よりも
短い距離まで凸部を２条対向側から突出するこ
とによつて、間隙間でのスパツタリングを凸部
で良好に吸収させることによつて凸部側壁面や
他面では稀釈化することができ、繰返し耐量の
大きな極避雷器を提供することができる。(c) By protruding the convex portion from the two opposite sides from the sealing insulator base to a distance shorter than the discharge gap distance, sputtering in the gap can be well absorbed by the convex portion. The side wall surface of the convex portion and other surfaces can be diluted, and a pole lightning arrester with high repeated durability can be provided.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来のガス入放電管形避雷器を示し、
ａは断面図、ｂはａに示す矢視ｂの側面図、第２
図は本考案の施されたガス入放電管形避雷器の裏
面からの斜視図、第３図は第２図の−線断面
図、第４図は第３図の−線断面図、第５図は
アース共通電極の斜視図、第６図は個別電極の斜
視図、第７図は蓋となる封止用絶縁体ベースの斜
視図である。 １０……絶縁体ベース、４０……封止用絶縁体
ベース、２０……共通電極、３０……個別電極、
４２……凸部、４２ａ……側壁面、４３……導電
線。 Figure 1 shows a conventional gas-filled discharge tube type lightning arrester.
a is a cross-sectional view, b is a side view of arrow b shown in a, and the second
The figure is a perspective view from the back of a gas-filled discharge tube type surge arrester according to the present invention, Figure 3 is a cross-sectional view taken along the line - - in Figure 2, Figure 4 is a cross-sectional view taken along the line - - in Figure 3, and Figure 5. 6 is a perspective view of the ground common electrode, FIG. 6 is a perspective view of the individual electrodes, and FIG. 7 is a perspective view of the sealing insulator base serving as the lid. 10...Insulator base, 40...Insulator base for sealing, 20...Common electrode, 30...Individual electrode,
42... Convex portion, 42a... Side wall surface, 43... Conductive wire.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 絶縁体ベースとこの対向側の封止用絶縁体ベー
スとで封止ガス空間を形成し、上記絶縁体ベース
には長尺の共通電極とその巾方向両側の多数の個
別電極を突出配置して同一平面に放電間隙を多数
形成し、上記共通電極には個別電極の配置位置毎
に貫通孔を貫通し、前記封止用絶縁体ベースには
各放電間隙間に位置して放電間隙距離よりも短い
距離まで凸部を２条突出し、この凸部の突出端面
には個別電極の配置位置毎に導電材を設けたこと
を特徴とするガス入放電管形多極避雷器。 A sealing gas space is formed by the insulator base and a sealing insulator base on the opposite side, and a long common electrode and a large number of individual electrodes on both sides of the common electrode are arranged protruding from the insulator base. A large number of discharge gaps are formed on the same plane, a through hole is formed in the common electrode at each position of the individual electrode, and a through hole is formed in the sealing insulator base to be located in each discharge gap, and a hole is formed in the sealing insulator base, and a through hole is formed in the common electrode at each position of the individual electrode. A gas-filled discharge tube type multipolar lightning arrester characterized in that two protrusions protrude over a short distance, and a conductive material is provided on the protruding end face of the protrusions at each position where individual electrodes are arranged.