JPH01243320A - Lighting insulator - Google Patents
Lighting insulatorInfo
- Publication number
- JPH01243320A JPH01243320A JP7241388A JP7241388A JPH01243320A JP H01243320 A JPH01243320 A JP H01243320A JP 7241388 A JP7241388 A JP 7241388A JP 7241388 A JP7241388 A JP 7241388A JP H01243320 A JPH01243320 A JP H01243320A
- Authority
- JP
- Japan
- Prior art keywords
- lightning arrester
- snow
- insulator
- horns
- arcing
- 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 22
- 241001499583 Microchera albocoronata Species 0.000 claims description 6
- 230000002265 prevention Effects 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 238000007599 discharging Methods 0.000 abstract 4
- 239000000463 material Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000009413 insulation Methods 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 229920000515 polycarbonate Polymers 0.000 description 1
- 239000004417 polycarbonate Substances 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 229920002050 silicone resin Polymers 0.000 description 1
Landscapes
- Insulators (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
この発明は、送電線に雷撃による異常大電流が流れたと
き、避雷機能によりそれを速やかに大地へ放電すると共
に、続流を抑制遮断して永久地格を防止することができ
る避雷碍子装置に関するものである。[Detailed Description of the Invention] (Industrial Application Field) This invention, when an abnormally large current flows through a power transmission line due to a lightning strike, quickly discharges it to the ground using a lightning protection function, and suppresses and interrupts follow-on current. This invention relates to a lightning arrester device that can prevent permanent earth damage.
（従来の技術）
従来のこの種の避雷碍子装置としては、腕金等の接地物
上に電線を支持するための支持碍子が立設されると共に
、ブラケット等を介して避雷碍子が支持され、支持碍子
の先端部に取着された課電側のアークホーンと避１ｉｖ
Ｊ子の先端部に取着された接地側のアクホーンとの間に
所定の直列放電ギャップが設けられたものが知られてい
る。(Prior Art) In this type of conventional lightning arrester device, a supporting insulator for supporting electric wires is erected on a grounding object such as a cross arm, and the lightning arrester is supported via a bracket or the like. The arc horn and evacuator 1iv on the energized side attached to the tip of the support insulator
It is known that a predetermined series discharge gap is provided between the J element and the ground-side ac horn attached to the tip of the J element.
〈発明が解決しようとする課題）
ところが、この従来の避雷碍子装置においては１、ｉｉ
側及び接地側の両アークホーンが上下に対応して配置さ
れ、そのアークホーン間の直列放電ギャップが垂直方向
に設けられているため、特に豪雪地帯等で使用された場
合、両アークホーン上に積った雪が直列放電ギャップ側
に成長して、所定の直列放電ギャップが確保できなくな
り、この直列放電ギャップが雪で覆われてしまうと、続
流の抑制遮断が不能になるという問題点があった。(Problems to be solved by the invention) However, in this conventional lightning arrester device, problems 1, ii
Both arcing horns on the side and grounding sides are arranged vertically, and the series discharge gap between the arcing horns is provided in the vertical direction, so when used in areas with heavy snowfall, etc. Accumulated snow grows on the series discharge gap side, making it impossible to secure a predetermined series discharge gap, and if this series discharge gap is covered with snow, there is a problem that it becomes impossible to suppress and interrupt the following current. Ta.
この発明は、このような従来の技術に存在する問題点に
着目してなされたものであって、課電側及び接地側の両
アークホーン上に雪が積るのを防止して、常に所定距離
の直列放電ギャップを確保することができ、続流の抑制
遮断不能に陥るおそれを確実に防止することができる冠
雪防止機能を備えた避雷碍子装置を提供することを目的
とする。This invention was made by focusing on the problems that exist in the conventional technology, and it prevents snow from accumulating on both the power supply side and the grounding side arc horn, and always maintains a predetermined distance. It is an object of the present invention to provide a lightning arrester device having a snow cap prevention function that can secure a series discharge gap of 200 m and can reliably prevent the possibility of failure to suppress and cut off follow-on current.
（課題を解決するための手段）
上記の目的を達成するために、この発明の避雷碍子装置
においては、読会等の接地物に対し電線を支持する支持
碍子を立設し、支持碍子の下部金具又は前記接地物には
ブラケットを介して避雷碍子を支持し、前記支持碍子の
先端部に取着しだ課電側のアークホーンと前記避雷碍子
の先端部に取着した接地側のアークホーンとの間に所定
の直列放電ギャップを設けた避雷碍子装置において、前
記両アークホーンの上方に位置するように冠雪防止カバ
ーを装設したものである。(Means for Solving the Problems) In order to achieve the above object, in the lightning arrester device of the present invention, a support insulator for supporting electric wires is erected with respect to a grounding object such as a reading board, and a lower part of the support insulator is installed. A lightning arrester is supported via a bracket on the metal fitting or the grounding object, and an arc horn on the energized side attached to the tip of the support insulator and an arc horn on the grounding side attached to the tip of the lightning arrester. In this lightning arrester device, a predetermined series discharge gap is provided between the arc horns, and a snow cover is installed above the arc horns.
（作用）
上記のように構成された避雷碍子装置においては、豪雪
地帯で使用した場合にも、冠雪防止カバーにより両アー
クホーンの上方が覆われているため、そのアークホーン
上に雪が積ることはなく、常に所定距離の直列放電ギャ
ップを確保することができる。(Function) In the lightning arrester device configured as described above, even when used in areas with heavy snowfall, the tops of both arc horns are covered by the snow cover, so snow will not accumulate on the arc horns. Therefore, a series discharge gap of a predetermined distance can always be ensured.
（実施例）
以下、この発明を具体化した避雷碍子装置の一実施例を
第１図及び第２図に基づいて詳細に説明する。(Example) Hereinafter, an example of a lightning arrester device embodying the present invention will be described in detail based on FIGS. 1 and 2.
第１図に示すように、支持碍子１は接地物としての腕台
２上に立設され、その上端には電線３が架設支持されて
いる。避雷碍子４は支持碍子の下部金具（読会２でもよ
い）にブラケット５を介して支持され、電輪３の線路方
向に沿って上向きの斜状に延びている。As shown in FIG. 1, the support insulator 1 is erected on an arm stand 2 serving as a grounding object, and an electric wire 3 is installed and supported at the upper end of the support insulator 1. The lightning arrester 4 is supported by a lower metal fitting (the reading board 2 may be used) of the support insulator via a bracket 5, and extends obliquely upward along the line direction of the electric ring 3.
前記避雷碍子４は、ＦＲＰ等の耐張材料により円筒状に
形成された耐圧絶縁筒（図示せず）と、その内部に直列
に収容された酸化亜鉛（Ｚｎ Ｏ）を主材とする電圧−
電流特性が非直線性の限流素子（図示せず）と、前記耐
圧絶縁等の両端部に嵌合固定されたキャップ状の課電側
及び接地側の電極金具６．７と、さらに前記耐圧絶縁筒
の外周に設けられたゴムモールド８とより構成されてい
る。The lightning arrester 4 includes a voltage-resistant insulating cylinder (not shown) formed in a cylindrical shape from a tensile material such as FRP, and a voltage-resistant insulating cylinder (not shown) whose main material is zinc oxide (ZnO) housed in series therein.
A current-limiting element (not shown) with non-linear current characteristics, cap-shaped electrode fittings 6.7 on the power supply side and the ground side fitted and fixed to both ends of the voltage-resistant insulation, etc., and further the voltage-resistant insulation, etc. It is composed of a rubber mold 8 provided on the outer periphery of an insulating cylinder.
課電側の７−クホーン９は前記支持碍子１の先端部に取
着され、斜め下方に向かって延びている。The 7-quad horn 9 on the power supply side is attached to the tip of the support insulator 1 and extends obliquely downward.
接地側のアークホーン１０は避雷碍子４の先端部の電極
金具６に取着され、斜め上方に向かって延びている。そ
して、両アークホーン９．１０の部間には、所定の直列
放電ギャップＧ１が形成されて°いる。The ground side arc horn 10 is attached to an electrode fitting 6 at the tip of the lightning arrester 4 and extends obliquely upward. A predetermined series discharge gap G1 is formed between both arc horns 9 and 10.
一対のアーキングホーン１１．１２は前記避雷碍子４の
画電極金具６．７に取着され、互いに接近する方向に延
びている。そして、両アーキングホーン１１，１２の先
端部間には、避雷碍子４の沿面閃絡時の！Ａ傷を防止す
るための保護放電ギャップＧ２が形成されている。A pair of arcing horns 11.12 are attached to the picture electrode fittings 6.7 of the lightning arrester 4 and extend in a direction toward each other. And, between the tips of both arcing horns 11 and 12, there is a space between the tips of the arcing horns 11 and 12 during creeping flash of the lightning arrester 4! A protective discharge gap G2 is formed to prevent A scratches.
第１図及び第２図に示すように、冠雪防止カバー１３は
クランプ１４により電線３に沿って取着され、ＦＲＰや
ポリカーボネート等の軽量な絶縁材によって、はぼ三角
屋根型状に形成されている。As shown in FIGS. 1 and 2, the snow cover 13 is attached along the electric wire 3 with a clamp 14, and is formed into a triangular roof shape using a lightweight insulating material such as FRP or polycarbonate. ing.
そして、この冠雪防止カバー１３により前記両アークホ
ーン９．１０及びアーキングホーン１１゜１２の上方が
覆われている。冠雪防止カバーの外表面は撥水性のある
フッ素樹脂、シリコン樹脂や同ゴム素材で処理すると、
融雪から凍結へ進展するのを確実に防止でき、更に信頼
性が向上する。The snow cover 13 covers the upper parts of both arcing horns 9 and 10 and the arcing horns 11 and 12. When the outer surface of the snow cover is treated with water-repellent fluororesin, silicone resin, or the same rubber material,
The progression from snow melting to freezing can be reliably prevented, further improving reliability.
従って、この実施例の避雷碍子装置を豪雪地帯等で使用
した場合、冠雪防止カバー１３にて両アークホーン９，
１０及びアーキングホーン１１゜１２上に雪が積るのが
確実に防止され、常に所定距離の直列放電ギャップＧ１
及び保護放電ギャップＧ２が確保された状態に維持され
る。Therefore, when the lightning arrester device of this embodiment is used in areas with heavy snowfall, both the arc horns 9 and
10 and the arcing horns 11 and 12 are reliably prevented from accumulating, and the series discharge gap G1 is always a predetermined distance.
And the protective discharge gap G2 is maintained in a secured state.
そのために、電１３に対し雷撃による異常大電流が印加
された場合には、その電流が課電側のアークホーン９か
ら直列放電ギャップＧ１を経て接地側のアークホーン１
０に放電され、避雷碍子４の限流素子及びブラケット５
を介して読会２に流れて大地に放電されると共に、その
後に生じる続流は前記避雷碍子４の限流素子によって確
実に抑制遮断される。又、避雷碍子４の外面に沿って閃
絡が生じたような場合、その電流は両アーキングホーン
１１．１２間の保護放電ギャップＧ２で放電され、沿面
閃絡による損傷が確実に防止される。Therefore, when an abnormally large current is applied to the power source 13 due to a lightning strike, the current flows from the arc horn 9 on the energized side through the series discharge gap G1 to the arc horn 1 on the ground side.
0, the current limiting element of the lightning arrester 4 and the bracket 5
The electric current flows to the reading chamber 2 through the electric current and is discharged to the ground, and any follow-on current that occurs thereafter is reliably suppressed and blocked by the current limiting element of the lightning arrester 4. Further, in the event that a flash fault occurs along the outer surface of the lightning arrester 4, the current is discharged in the protective discharge gap G2 between the two arcing horns 11, 12, and damage caused by the creeping flash fault is reliably prevented.
（別の実施例）
次に、この発明の別の実施例を第３図〜第５図に基づい
て説明する。(Another Embodiment) Next, another embodiment of the present invention will be described based on FIGS. 3 to 5.
さて、この実施例においては、避ｆｉｔ碍子４が電線３
の線路方向の側方へ突出するように配置され、両アーク
ホーン９，１０及びアーキングホーン１１．１２の上方
を覆うように、支持碍子１及び避雷碍子４の先端部に冠
雪防止カバー１５．１６がそれぞれ取着されている。両
冠雪防止カバー１５゜１６はほぼ円弧屋根型状に形成さ
れると共に、−端側が大きなカーブで下降するように形
成され、冠雪防止カバー１５．１６上に積る雪がこのカ
ーブ上面に沿って落下するようになっている。従って、
この実施例においても、両冠雪防止カバー１５．１６に
てアークホーン９，１０及びアーキングホーン１１．１
２上に雪が積るのが確実に防止される。Now, in this embodiment, the escape fit insulator 4 is the electric wire 3.
A snow cover 15. is disposed so as to protrude laterally in the track direction, and is attached to the tips of the support insulator 1 and the lightning arrester 4 so as to cover both arc horns 9, 10 and the arcing horn 11.12. 16 are attached to each. Both snow cap prevention covers 15 and 16 are formed into an almost circular arc roof shape, and are formed so that the negative end side descends in a large curve, so that the snow that accumulates on the snow cap prevention covers 15 and 16 flows along the upper surface of this curve. It is designed to fall. Therefore,
In this embodiment as well, the arcing horns 9, 10 and the arcing horn 11.1 are connected to the snow-covered cover 15.16.
2. Snow accumulation on the surface is reliably prevented.
〈発明の効果）
この発明は、以上説明したように構成されているため、
ｗｉｉｉｓ及び接地側の両アークホーン上に雪が積るの
を防止して、常に所定距離の直列放電ギャップを確保す
ることができ、直列放電ギャップに雪が溜まることで続
流の抑制遮断不能に陥るおそれを確実に防止することが
できるという優れた効果を奏する。<Effects of the invention> Since this invention is configured as explained above,
By preventing snow from accumulating on both the arc horn on the wiiis and the ground side, it is possible to always ensure a series discharge gap of a predetermined distance, and there is a risk that snow will accumulate in the series discharge gap and it will be impossible to suppress and interrupt the follow-on current. This has the excellent effect of reliably preventing the
第１図はこの発明を具体化した避雷碍子装置の一実施例
を示す部分破断正面図、第２図は第１図のＡ−Ａ線にお
ける拡大断面図、第３図は避雷碍子装置の別の実施例を
示す部分破断正面図、第４図は第３図のＢ−Ｂ線におけ
る拡大断面図、第５図は第３図のｃ−ｃｍにお各ノる拡
大断面図である。
１・・・支持碍子、２・・・接地物としての読合、３・
・・電線、４・・・避Ｗ！碍子、５・・・ブラケット、
９・・・課電側のアークホーン、１０・・・接地側のア
ークホーン、１３．１５．１６・・・冠雪防止カバー、
Ｇ１・・・直列放電ギャップ。
特許出願人 日本碍子 株式会社
ＨFig. 1 is a partially cutaway front view showing one embodiment of a lightning arrester device embodying the present invention, Fig. 2 is an enlarged sectional view taken along line A-A in Fig. 1, and Fig. 3 is an illustration of another embodiment of the lightning arrester device. FIG. 4 is an enlarged sectional view taken along line B--B in FIG. 3, and FIG. 5 is an enlarged sectional view taken along line c-cm in FIG. 3. 1...Support insulator, 2...Reading as a grounding object, 3.
...Electric wire, 4...Escape W! Insulator, 5...bracket,
9... Arc horn on power supply side, 10... Arc horn on grounding side, 13.15.16... Snow cap prevention cover,
G1...Series discharge gap. Patent applicant Nippon Insulator H Co., Ltd.
Claims (1)
設し、支持碍子の下部金具又は前記接地物にはブラケッ
トを介して避雷碍子を支持し、前記支持碍子の先端部に
取着した課電側のアークホーンと前記避雷碍子の先端部
に取着した接地側のアークホーンとの間に所定の直列放
電ギャップを設けた避雷碍子装置において、前記両アー
クホーンの上方に位置するように冠雪防止カバーを装設
したことを特徴とする冠雪防止機能を有する避雷碍子装
置。1. A support insulator that supports the electric wire is erected from a grounding object such as a cross arm, and a lightning arrester is supported via a bracket on the lower metal fitting of the support insulator or the grounding object, and is attached to the tip of the support insulator. In a lightning arrester device in which a predetermined series discharge gap is provided between a energized-side arc horn attached to the ground and a ground-side arc horn attached to the tip of the lightning arrester, the lightning arrester is located above both arc horns. A lightning arrester device having a snow cap prevention function, characterized in that it is equipped with a snow cap prevention cover.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7241388A JPH01243320A (en) | 1988-03-25 | 1988-03-25 | Lighting insulator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7241388A JPH01243320A (en) | 1988-03-25 | 1988-03-25 | Lighting insulator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01243320A true JPH01243320A (en) | 1989-09-28 |
Family
ID=13488571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7241388A Pending JPH01243320A (en) | 1988-03-25 | 1988-03-25 | Lighting insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01243320A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012203996A (en) * | 2011-03-23 | 2012-10-22 | Asahi Electric Works Ltd | Ground fault protection cover for support pin insulator |
| JP2016197937A (en) * | 2015-04-02 | 2016-11-24 | 古河電気工業株式会社 | Snow accretion prevention device and installation work method therefor |
-
1988
- 1988-03-25 JP JP7241388A patent/JPH01243320A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012203996A (en) * | 2011-03-23 | 2012-10-22 | Asahi Electric Works Ltd | Ground fault protection cover for support pin insulator |
| JP2016197937A (en) * | 2015-04-02 | 2016-11-24 | 古河電気工業株式会社 | Snow accretion prevention device and installation work method therefor |
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