JPH01163923A - Lightening insulator - Google Patents
Lightening insulatorInfo
- Publication number
- JPH01163923A JPH01163923A JP32177687A JP32177687A JPH01163923A JP H01163923 A JPH01163923 A JP H01163923A JP 32177687 A JP32177687 A JP 32177687A JP 32177687 A JP32177687 A JP 32177687A JP H01163923 A JPH01163923 A JP H01163923A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- insulator
- arc
- current
- insulating
- 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.)
- Pending
Links
- 239000012212 insulator Substances 0.000 title claims abstract description 27
- 239000000853 adhesive Substances 0.000 claims abstract description 9
- 230000001070 adhesive effect Effects 0.000 claims abstract description 9
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 239000011810 insulating material Substances 0.000 claims description 5
- 239000000155 melt Substances 0.000 abstract description 3
- 238000004880 explosion Methods 0.000 abstract 3
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- 239000007789 gas Substances 0.000 description 8
- 239000004020 conductor Substances 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- 230000000644 propagated effect Effects 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/12—Overvoltage protection resistors
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Insulators (AREA)
Abstract
Description
【発明の詳細な説明】
発明の目的
（産業上の利用分野）
本発明は送電線あるいは配電線路に雷サージ電流が流れ
た場合にそれを速やかに大地へ放電するとともに、その
後生じる商用周波の続流電流を抑制遮断することができ
る避雷碍子に関するものである。[Detailed Description of the Invention] Purpose of the Invention (Field of Industrial Application) The present invention promptly discharges lightning surge current to the ground when it flows through a power transmission line or distribution line, and also discharges the subsequent commercial frequency continuation. This invention relates to a lightning arrester that can suppress and interrupt current flow.
（従来の技術及び発明が解決しようとする問題点）従来
の避雷碍子として、本願出願人は第７図に示す避雷碍子
を提案した。この避雷碍子は筒状をなす耐圧絶縁筒３７
の両端開口部に対し、キャップ金具３８．３９を嵌装固
定し、該耐圧絶縁筒３７内には限流素子３２を収容して
、前記キャップ金具３８．３９に電気的に接続するとと
もに、該耐圧絶縁筒３７には限流素子３２両端部に対応
するように少なくとも一以上の放圧孔３７ａを透設し、
前記キャップ金具３８．３９にはアーク招弧部材４０を
該放圧孔３７ａ外側にそれぞれ対応するように設け、さ
らに、前記耐圧絶縁筒３７の外周及び耐圧絶縁筒３７と
限流素子３２との間隙ｇをゴム製の有機絶縁材４１によ
りモールドして構成されている。(Prior Art and Problems to be Solved by the Invention) As a conventional lightning arrester, the applicant proposed the lightning arrester shown in FIG. 7. This lightning arrester is a cylindrical voltage-resistant insulating tube 37.
Cap metal fittings 38 and 39 are fitted and fixed to the openings at both ends of the cap metal fittings 38 and 39, and the current limiting element 32 is accommodated in the voltage-proof insulating cylinder 37 and is electrically connected to the cap metal fittings 38 and 39. At least one or more pressure release holes 37a are provided in the voltage-resistant insulation cylinder 37 so as to correspond to both ends of the current-limiting element 32,
Arc inviting members 40 are provided on the cap fittings 38 and 39 so as to correspond to the outside of the pressure relief hole 37a, and further, the outer periphery of the voltage-resistant insulating cylinder 37 and the gap between the voltage-resistant insulating cylinder 37 and the current limiting element 32 are provided. g is molded with an organic insulating material 41 made of rubber.
ところが、この避雷碍子は前記耐圧絶縁筒３７と限流素
子３２との間隙ｇにもゴム製の有機絶縁材４１が充填さ
れているので、万一、何等かの原因で限流素子３２が導
通状態となった場合には耐圧絶縁筒はアークにより生じ
る圧力に耐える必要があるため、その分厚内にすること
となり、大型化するという問題があった。However, in this lightning arrester, the gap g between the voltage-resistant insulating cylinder 37 and the current limiting element 32 is also filled with rubber organic insulating material 41, so in the unlikely event that the current limiting element 32 becomes conductive for some reason. In such a case, the pressure-resistant insulating tube must withstand the pressure generated by the arc, so the thickness must be within that range, resulting in an increase in size.
本発明の目的は、上記従来の技術に存する問題点を解消
して、避雷碍子に万一、想定を越える雷サージ電流が侵
入し、あるいは他の原因で限流素子が導通状態となった
ような場合に、その高温、高圧のアークを碍管又は耐圧
地縁筒に設けた破裂板へ容易に伝播させて放圧を迅速、
かつ確実に行なうことができ、さらに、放圧圧力の管理
を厳格に行い、その分砕管あるいは耐圧絶縁筒を薄肉化
して避雷碍子の小型化を計り、既設設備への適用性に優
れた避雷碍子を提供することにある。An object of the present invention is to solve the problems existing in the above-mentioned conventional technology, and to prevent the current limiting element from becoming conductive in the unlikely event that an unexpected surge current enters the lightning arrester or for other reasons. In such cases, the high-temperature, high-pressure arc can be easily propagated to the rupture disc installed in the insulator pipe or the pressure-resistant rim cylinder, and the pressure can be released quickly.
Furthermore, by strictly controlling the relief pressure and by making the crushing tube or pressure-resistant insulating tube thinner, the lightning arrester can be made smaller, making it possible to create a lightning arrester with excellent applicability to existing facilities. The goal is to provide insulators.
発明の構成
（問題点を解決するための手段）
本発明は前記問題点を解消するため、碍管又は耐圧Ｖ＠
縁筒の両端部に接地側の電極金具と課電側の電極金具を
気密的に嵌合固定し、該碍管又は耐圧絶縁筒の密閉空間
にはその内周面と所定の間隙をもって電圧−電流特性が
非直線性の限流素子を収容し、前記電極金具と限流素子
の上下両端部を電気的に接続し、前記碍管又は耐圧絶縁
筒の少なくとも一部に取付孔を設け、該取付孔には薄肉
の破裂板を気密的に接着した筒状の取付筒体を嵌合して
接着剤等により気密的に嵌合し、さらに、前記密閉空間
にはｋｆｊｌ性のガスを封入するという手段を採ってい
る。Structure of the Invention (Means for Solving the Problems) In order to solve the above problems, the present invention aims to solve the problems described above.
The electrode fittings on the grounding side and the electrode fittings on the energizing side are hermetically fitted and fixed to both ends of the edge tube, and the voltage-current is maintained in the sealed space of the insulating tube or voltage-resistant insulating tube with a predetermined gap between the inner peripheral surface and the electrode fitting. accommodating a current limiting element with non-linear characteristics, electrically connecting the electrode fitting and both upper and lower ends of the current limiting element, providing a mounting hole in at least a part of the insulating tube or voltage-resistant insulating tube, and providing the mounting hole A cylindrical mounting cylinder having a thin-walled rupture plate hermetically bonded thereto is fitted thereto with an adhesive or the like, and the sealed space is further filled with KFJL gas. are taken.
（作用）
本発明は前記密閉空間に絶縁性のガスが封入されている
ので、限流素子に万一、想定を越える雷サージ電流が流
れ、あるいは他の原因によって、該限流素子が導通状態
となったような際には、高温・高圧のアークが発生する
。このアークは前記空間内の絶縁ガス中を通って破裂板
へと迅速に到達するので、該破裂板が高熱アークにより
溶融され、外部への放圧が容易となる。この結果、碍管
又は耐圧絶縁筒に加わる圧力が低下し、この分砕管又は
耐圧絶縁筒の肉厚の低減を計ることが可能となり、避雷
碍子の小型化を計ることができる。(Function) In the present invention, since the sealed space is filled with insulating gas, in the unlikely event that an unexpected lightning surge current flows through the current-limiting element or due to other causes, the current-limiting element becomes conductive. When this happens, a high-temperature, high-pressure arc occurs. Since this arc passes through the insulating gas in the space and quickly reaches the rupture disc, the rupture disc is melted by the high-temperature arc, making it easy to release the pressure to the outside. As a result, the pressure applied to the insulator tube or pressure-resistant insulating tube is reduced, and the wall thickness of the shredder tube or pressure-resistant insulating tube can be reduced, making it possible to downsize the lightning arrester.
特に、本発明では最小圧力により破裂板が破裂するよう
に、その肉厚を容易に管理することができ、従って、限
流素子の導通時に発生する内部圧力を最小限にとどめて
、碍管あるいは耐圧絶縁筒の肉厚を薄肉化して避雷碍子
を小型化することができる。In particular, in the present invention, the wall thickness of the rupture disc can be easily controlled so that the rupture disc ruptures at the minimum pressure. By reducing the thickness of the insulating tube, the lightning arrester can be made smaller.
（実施例）
以下、本発明を具体化した一実施例を第１図〜第５図に
基づいて説明する。(Example) Hereinafter, an example embodying the present invention will be described based on FIGS. 1 to 5.
外周に多数の絶縁ひだ１ａを一体形成した耐候性を有す
る耐強化樹脂（例えばＦＲＰ）よりなる円筒状の碍管ｌ
の上端部には内外二層の嵌合筒部１ｂが形成されている
。この嵌合筒部ｉｂには接着剤２により接地側の電極金
具３の下側円筒部が嵌合固定され、該電極金具３の外周
面には図示しない鉄塔の支持アームに取着した取付アダ
プタに取付けられるフランジ部３ａが一体に形成されて
いる。前記碍管１は上下中央部において二分割され、後
に詳述する取付筒体１５により直列に嵌合され、接着剤
２により固定されている。A cylindrical insulator tube l made of weather-resistant reinforced resin (for example, FRP) with a large number of insulating folds 1a integrally formed on the outer periphery.
A two-layer fitting cylinder portion 1b is formed at the upper end portion. The lower cylindrical part of the electrode fitting 3 on the ground side is fitted and fixed to this fitting cylinder part ib with an adhesive 2, and a mounting adapter attached to a support arm of a steel tower (not shown) is attached to the outer peripheral surface of the electrode fitting 3. A flange portion 3a to be attached to is integrally formed. The insulator tube 1 is divided into two parts at the upper and lower central portions, fitted in series by a mounting cylinder 15 which will be described in detail later, and fixed with an adhesive 2.
又、前記碍管１の下端部に形成した嵌合筒部１ｂには接
着剤２により有底円筒状の課電側の電極金具４が気密的
に嵌合固定され、該電極金具４の下面には図示しないが
、送電線側に取着しだ課電側のアークホーンと所定の気
中放電間隙をもって対向する接地側のアークホーンを取
付けるためのブラケット４ａが一体に形成されている。Further, a bottomed cylindrical electrode fitting 4 on the power supply side is airtightly fitted and fixed to the fitting cylinder part 1b formed at the lower end of the insulator tube 1 with an adhesive 2, and the lower surface of the electrode fitting 4 is fixed. Although not shown in the drawings, a bracket 4a is integrally formed for attaching the energizing side arcing horn attached to the power transmission line and the grounding side arcing horn that faces the arcing horn with a predetermined air discharge gap.
前記課電側の電極金具４の内底面には嵌合筒部４ｂが形
成され、これには課電側の導体金具５の下端部が嵌合固
定されている。該導体金具５の上面には、電圧−電流特
性が非直線性を有する酸化亜鉛を主材とする限流素子６
が直列に積層載置され、この限流素子６の上端面には有
底円筒状をなすバネ受を兼用する接地側の導体金具７が
支持されている。A fitting cylindrical portion 4b is formed on the inner bottom surface of the electrode fitting 4 on the energizing side, and a lower end portion of the conductor fitting 5 on the energizing side is fitted and fixed to this. On the upper surface of the conductive metal fitting 5, a current limiting element 6 whose main material is zinc oxide whose voltage-current characteristics are non-linear is disposed.
are stacked in series, and a ground-side conductive metal fitting 7 having a cylindrical shape with a bottom and also serving as a spring support is supported on the upper end surface of the current-limiting element 6.
一方、前記接地側の電極金具３の内周面に形成したネジ
部３ｂには締付リング８が螺合され、該リング８内に嵌
合した中間導体９と前記導体金具７との間には、通電用
のシャント１０を有するコイル状のバネ１１が介在され
ている。このバネ１１の弾発力により前記限流素子６が
課電側の導体金具５と接地側の導体金具７との間に押圧
固定される。On the other hand, a tightening ring 8 is screwed into a threaded portion 3b formed on the inner peripheral surface of the electrode fitting 3 on the ground side, and between the intermediate conductor 9 fitted in the ring 8 and the conductor fitting 7. A coiled spring 11 having a shunt 10 for energization is interposed. Due to the elastic force of the spring 11, the current limiting element 6 is pressed and fixed between the conductive metal fitting 5 on the energizing side and the conductive metal fitting 7 on the grounding side.
さらに、前記接地側の電極金具３の開口部には、前記絶
縁リング８及び中間導体９を覆うように絶縁密閉体１３
が接着剤２により気密的に嵌合固定されている。Furthermore, an insulating sealing body 13 is provided in the opening of the electrode fitting 3 on the ground side so as to cover the insulating ring 8 and the intermediate conductor 9.
are hermetically fitted and fixed by adhesive 2.
前記課電側の電極金具４にはガス封入孔４Ｃが形成され
、この封入孔４Ｃから前記碍管１と限流素子６との間に
形成された密閉空間Ｒに対し、窒素ガスあるいは六フッ
化硫黄（ＳＦ６）等の絶縁性に優れたガスが封入され、
封入後は密栓１４により封止されている。A gas filling hole 4C is formed in the electrode fitting 4 on the power supply side, and nitrogen gas or hexafluoride Filled with gas with excellent insulation properties such as sulfur (SF6),
After being sealed, it is sealed with a hermetic stopper 14.
又、前記碍管１は第１図に示すように、そのほぼ中央部
において上下二つに分割され、金属製の本発明の要部で
ある取付筒体１５の上下両端部に嵌合され、接着剤２に
より気密的に固定されている。該取付筒体１５にはその
半径方向に放圧孔１５ａが複数（この“実施例では４箇
所）に形成され、該放圧孔１５ａと対応する内周面には
円環状をなす突条部１５ｂが一体に形成されている。こ
の取付筒体１５の外周面及び突条部１５ｂの端面には放
圧孔１５ａを密閉する薄い（例えば０．０５〜０．２ｆ
ｉ程度のアルミニウム板、銅板等）板状をなす金属製の
破裂板１６が接着剤１７により接着固定されている。そ
して、前記密閉空間Ｒ内が所定温度及び所定圧力以上と
なった場合に、前記破裂板１６が溶融破裂して放圧し得
るようにしている。Further, as shown in FIG. 1, the insulator tube 1 is divided into upper and lower halves at approximately the center thereof, and is fitted to both upper and lower ends of a metal mounting cylinder 15, which is the main part of the present invention, and is bonded. It is airtightly fixed by agent 2. A plurality of pressure relief holes 15a (four in this embodiment) are formed in the mounting cylinder 15 in the radial direction, and an annular protrusion is provided on the inner peripheral surface corresponding to the pressure relief holes 15a. 15b is integrally formed.A thin film (for example, 0.05 to 0.2
A metal rupture plate 16 in the form of a plate (aluminum plate, copper plate, etc.) of about 100 mL is adhesively fixed with an adhesive 17. When the inside of the sealed space R reaches a predetermined temperature and pressure, the rupture disc 16 melts and ruptures to release the pressure.
前記取付筒体１５が前述したように金属製の場合には、
前記突条部１５ｂと対応する限流素子６の上下両端が同
電位となるので、取付筒体１５と限流素子６との間でフ
ラッジオーバする。これを防止するため限流素子６の外
周面には、導電性の薄い遮蔽筒１７が設けられている。When the mounting cylinder 15 is made of metal as described above,
Since both the upper and lower ends of the current-limiting element 6 corresponding to the protruding portion 15b have the same potential, a floodover occurs between the mounting cylinder 15 and the current-limiting element 6. To prevent this, a thin conductive shielding tube 17 is provided on the outer peripheral surface of the current limiting element 6.
なお、前記取付筒体１５が絶縁材の場合には、前記遮蔽
筒１７は不要となる。In addition, when the said attachment cylinder 15 is an insulating material, the said shield cylinder 17 becomes unnecessary.
次に、前記のように構成した避雷碍子について、その作
用を説明する。Next, the operation of the lightning arrester constructed as described above will be explained.
さて、避雷碍子を鉄塔に装着した状態において、送電線
に雷サージ電流が流れると、その電流は送電線側のアー
クホーン（図示路）から避雷碍子下端のアークホーン（
図示路）にフランジオーバされ、課電側の電極金具４、
導電金具５、限流素子６、導体金具７、シャント１０、
中間導体９及び締付リング８を経て、接地側の電極金具
３に流れ、さらに、図示しない取付アダプタを介して鉄
塔へ流れ、大地に放電される。Now, when a lightning surge current flows through a power transmission line with a lightning arrester attached to a steel tower, the current flows from the arc horn (path shown) on the power transmission line side to the arc horn at the lower end of the lightning arrester (
The electrode fitting 4 on the energizing side is flanged over the illustrated path),
conductive metal fitting 5, current limiting element 6, conductive metal fitting 7, shunt 10,
It flows through the intermediate conductor 9 and the tightening ring 8 to the electrode fitting 3 on the ground side, further flows to the steel tower via a mounting adapter (not shown), and is discharged to the earth.
又、その後生じる続流は前記両アークホーンと限流素子
６とにより抑制遮断される。Furthermore, subsequent currents that occur thereafter are suppressed and blocked by both arc horns and the current limiting element 6.
さて、本発明は碍管１と限流素子６との間の密閉空間Ｒ
内に絶縁性ガスを密封したので、万一、想定を越える大
規模の雷サージ電流が限流素子６に印加されて、該限流
素子６が導通状態となり、高温・高圧のアークが発生し
たような場合でも、そのアークは、空間Ｒ内の絶縁性ガ
スを押し退けて放圧用の破裂板１６へと速やかに伝播さ
れ、この結果、高圧のアークが迅速に該破裂板１６を溶
融して外部へ放出されるので、碍管１内部の圧力上昇を
低減でき、碍管１本体の肉厚を薄肉化することが可能と
なり、避雷碍子の小型化を計ることができる。Now, the present invention provides a sealed space R between the insulator tube 1 and the current limiting element 6.
Since an insulating gas was sealed inside, in the unlikely event that an unexpectedly large lightning surge current was applied to the current-limiting element 6, the current-limiting element 6 became conductive, and a high-temperature, high-pressure arc occurred. Even in such a case, the arc displaces the insulating gas in the space R and is quickly propagated to the rupture disc 16 for pressure relief, and as a result, the high-pressure arc quickly melts the rupture disc 16 and explodes outside. Therefore, the pressure increase inside the insulator tube 1 can be reduced, the wall thickness of the insulator tube 1 body can be reduced, and the lightning arrester can be made smaller.
特に、本発明では別途設けた取付筒体１５に対し放圧孔
１５ａを設け、その放圧孔１５ａを密閉する放圧用の破
裂板１６を接着して碍管１と別体に形成し、ユニット化
したので、適正圧力により破裂板１６が破裂するように
該破裂板１６の肉厚を容易に管理した状態で碍管１に組
みつけることができ、従って、その分碍管１の肉厚を薄
肉化して避雷碍子を小型化することができる。In particular, in the present invention, a pressure relief hole 15a is provided in the separately provided mounting cylinder 15, and a pressure relief rupture plate 16 for sealing the pressure relief hole 15a is bonded to form a separate body from the insulator tube 1, thereby forming a unit. Therefore, the wall thickness of the rupture disc 16 can be easily controlled so that the rupture disc 16 ruptures due to the appropriate pressure, and it can be assembled into the insulator pipe 1. Therefore, the wall thickness of the insulator pipe 1 can be made thinner accordingly. The lightning arrester can be downsized.
又、本発明は次のようにして具体化することも可能であ
る。Moreover, the present invention can also be embodied as follows.
（１）前記実施例では碍管１を二分割して取付筒体１５
により連結し、該取付筒体１５に破裂板１７を接着した
が、碍管１を分割しないで、その途中に円形状の取付孔
（図示路）を設け、そこへ破裂＋ｆｆＥ１６を備えたフ
ランジ部を有する円筒状の取付筒体を嵌入すること。(1) In the above embodiment, the insulator pipe 1 is divided into two and the mounting cylinder 15 is
The rupture plate 17 was bonded to the mounting cylinder 15, but the insulator tube 1 was not divided, but a circular mounting hole (path shown in the figure) was provided in the middle, and a flange portion with a rupture +ffE16 was inserted therein. Inserting the cylindrical mounting tube with the
（２）第６図に示すように、放圧孔１５ａの破裂板１６
を接着する側の通路面積を大きくして、破裂板１６に大
きな圧力が作用するようにすること。(2) As shown in FIG. 6, the rupture disc 16 of the pressure relief hole 15a
To increase the passage area on the side where the rupture disc 16 is bonded so that a large pressure is applied to the rupture disc 16.
（３）図示しないが前記碍管１に代えて、耐圧絶縁筒の
外周に有機絶縁材よりなる絶縁外套体をモールドした避
雷碍子において、前記耐圧絶縁筒に取付孔を設け、そこ
に破裂板１６を備えた取付筒体を嵌入固定すること。(3) Although not shown, in a lightning arrester in which an insulating mantle made of an organic insulating material is molded on the outer periphery of a voltage-resistant insulating cylinder instead of the insulating tube 1, a mounting hole is provided in the voltage-resistant insulating cylinder, and a rupture plate 16 is inserted therein. Insert and fix the provided mounting cylinder.
発明の効果
以上詳述したように、この発明は万一、想定を越える雷
撃、その他の原因によって限流素子が導通状態となり、
高温・高圧のアークが発生したような場合、そのアーク
を密閉空間の絶縁性ガス中を通って放圧用の破裂板へ素
早く導びき、該破裂板を溶融破壊して、放圧を迅速に行
い、碍管又は耐圧絶縁筒の圧力上昇を低減しその薄肉化
を計り、さらに、適正圧力により破裂板が破裂するよう
に破裂板の肉厚を容易に管理することができ、従って、
その分碍管あるいは耐圧絶縁筒の肉厚を薄肉化してこの
点からも避雷碍子を小型化することができる効果がある
。Effects of the Invention As detailed above, this invention can prevent the current limiting element from becoming conductive due to unexpected lightning strikes or other causes.
When a high-temperature, high-pressure arc occurs, the arc is quickly guided through the insulating gas in the closed space to a rupture disc for pressure relief, and the rupture disc is melted and destroyed to quickly release pressure. , it is possible to reduce the pressure rise in the insulating pipe or the pressure-resistant insulating tube and to make the wall thinner, and furthermore, the wall thickness of the rupture disc can be easily controlled so that the rupture disc ruptures under the appropriate pressure.
Correspondingly, the wall thickness of the insulator tube or voltage-resistant insulating cylinder can be made thinner, which also has the effect of making the lightning arrester smaller.
第１図は本発明の避雷碍子の一実施例を示す単線断面図
、第２図は碍管の部分斜視図、第３図は第１図のＡ−Ａ
線断面図、第４図は第１図のＢ−ＢｖＡ断面図、第５図
は第１図のＣ−Ｃ線断面図、第６図は発明の別例を示す
部分断面図、第７図は従来例を示す縦断面図である。
１・・・碍管、１ａ・・・絶縁ひだ、１ｂ・・・嵌合筒
部、３・・・接地側の電極金具、４・・・課電側の電極
金具、５・・・導電金具、６・・・限流素子、７・・・
導体金具、８・・・締付リング、９・・・中間導体、１
０・・・シャント、１１・・・バネ、１３・・・絶縁密
閉体、１５・・・取付筒体、１５ａ・・・放圧孔、１５
ｂ・・・突条部、１６・・・破裂板、１７・・・接着剤
、Ｒ・・・密閉空間。FIG. 1 is a single-line cross-sectional view showing one embodiment of the lightning arrester of the present invention, FIG. 2 is a partial perspective view of the insulator tube, and FIG. 3 is a line A-A in FIG. 1.
4 is a sectional view taken along line B-BvA in FIG. 1, FIG. 5 is a sectional view taken along line C-C in FIG. 1, FIG. 6 is a partial sectional view showing another example of the invention, and FIG. 1 is a longitudinal sectional view showing a conventional example. DESCRIPTION OF SYMBOLS 1... Insulator pipe, 1a... Insulating pleats, 1b... Fitting tube part, 3... Electrode fitting on the grounding side, 4... Electrode fitting on the charging side, 5... Conductive fitting, 6... Current limiting element, 7...
Conductor fitting, 8... Tightening ring, 9... Intermediate conductor, 1
0... Shunt, 11... Spring, 13... Insulating sealing body, 15... Mounting cylinder, 15a... Pressure relief hole, 15
b... Protrusion portion, 16... Rupture disc, 17... Adhesive, R... Sealed space.
Claims (2)
課電側の電極金具を気密的に嵌合固定し、該碍管又は耐
圧絶縁筒の密閉空間にはその内周面と所定の間隙をもっ
て電圧−電流特性が非直線性の限流素子を収容し、前記
電極金具と限流素子の上下両端部を電気的に接続し、前
記碍管又は耐圧絶縁筒の少なくとも一部に取付孔を設け
、該取付孔には薄肉の破裂板を気密的に接着した筒状の
取付筒体を嵌合して接着剤等により気密的に嵌合し、さ
らに、前記密閉空間には絶縁性のガスを封入したことを
特徴とする避雷碍子。1. The electrode fittings on the grounding side and the electrode fittings on the energized side are airtightly fitted and fixed to both ends of the insulating tube or pressure-resistant insulating tube, and the sealed space of the insulating tube or pressure-resistant insulating tube is provided with a predetermined gap from the inner peripheral surface thereof. accommodating a current-limiting element with non-linear voltage-current characteristics, electrically connecting the electrode fitting and both upper and lower ends of the current-limiting element, and providing a mounting hole in at least a part of the insulating tube or the voltage-resistant insulating cylinder; A cylindrical mounting cylinder to which a thin-walled rupture disc is airtightly bonded is fitted into the mounting hole, and the mounting cylinder is airtightly fitted with an adhesive or the like, and further, an insulating gas is filled in the sealed space. A lightning insulator that is characterized by:
求の範囲第１項に記載の避雷碍子。2. The lightning arrester according to claim 1, wherein the mounting cylinder is made of an insulating material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32177687A JPH01163923A (en) | 1987-12-19 | 1987-12-19 | Lightening insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP32177687A JPH01163923A (en) | 1987-12-19 | 1987-12-19 | Lightening insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01163923A true JPH01163923A (en) | 1989-06-28 |
Family
ID=18136300
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP32177687A Pending JPH01163923A (en) | 1987-12-19 | 1987-12-19 | Lightening insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01163923A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065750A1 (en) * | 2007-11-21 | 2009-05-28 | Epcos Ag | Overvoltage arrester having thermal overload protection |
| WO2013019097A2 (en) * | 2011-08-01 | 2013-02-07 | Mappec Materiales-Productos Poliméricos Y Elementos De Construcción, S. A. De C. V. | Voltage surge protector having a pressure release mechanism |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61151912A (en) * | 1984-12-25 | 1986-07-10 | 東京電力株式会社 | Lightning arresting bushing |
-
1987
- 1987-12-19 JP JP32177687A patent/JPH01163923A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61151912A (en) * | 1984-12-25 | 1986-07-10 | 東京電力株式会社 | Lightning arresting bushing |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2009065750A1 (en) * | 2007-11-21 | 2009-05-28 | Epcos Ag | Overvoltage arrester having thermal overload protection |
| US8395876B2 (en) | 2007-11-21 | 2013-03-12 | Epcos Ag | Surge arrester with thermal overload protection |
| WO2013019097A2 (en) * | 2011-08-01 | 2013-02-07 | Mappec Materiales-Productos Poliméricos Y Elementos De Construcción, S. A. De C. V. | Voltage surge protector having a pressure release mechanism |
| WO2013019097A3 (en) * | 2011-08-01 | 2013-07-18 | Mappec Materiales-Productos Poliméricos Y Elementos De Construcción, S. A. De C. V. | Voltage surge protector having a pressure release mechanism |
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