JPH0250569B2 - - Google Patents
Info
- Publication number
- JPH0250569B2 JPH0250569B2 JP22102185A JP22102185A JPH0250569B2 JP H0250569 B2 JPH0250569 B2 JP H0250569B2 JP 22102185 A JP22102185 A JP 22102185A JP 22102185 A JP22102185 A JP 22102185A JP H0250569 B2 JPH0250569 B2 JP H0250569B2
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- hanging
- lightning arrester
- horn
- discharge electrode
- 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.)
- Expired
Links
- 239000012212 insulator Substances 0.000 claims description 82
- 239000002184 metal Substances 0.000 claims description 12
- 239000000725 suspension Substances 0.000 claims description 11
- 238000009413 insulation Methods 0.000 description 10
- 230000002159 abnormal effect Effects 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
Landscapes
- Insulators (AREA)
Description
【発明の詳細な説明】
発明の目的
（産業上の利用分野）
この発明は落雷に起因する高電圧が送電線に加
わつたとき、それを速やかに放電するとともに、
その後生じる続流を遮断し、永久地絡を防止する
ための架空送電線用耐雷ホーン碍子装置に関す
る。[Detailed Description of the Invention] Purpose of the Invention (Industrial Application Field) This invention provides a method for quickly discharging high voltage caused by lightning when it is applied to a power transmission line, and
The present invention relates to a lightning horn insulator device for overhead power transmission lines for blocking subsequent currents and preventing permanent ground faults.
（従来の技術）
従来、送電線に対して所定の気中放電間隙をも
つて避雷碍子を装設する装置として、例えば、特
開昭49−80589号公報に開示された装置があつた。(Prior Art) Conventionally, as a device for installing a lightning arrester insulator with a predetermined air discharge gap to a power transmission line, there has been a device disclosed in, for example, Japanese Patent Application Laid-open No. 80589/1989.
この装置を第５図について説明すると、塔体の
支持アーム１に取着されたＵボルト４１に対し
て、吊下碍子４２の上部キヤツプ金具４３に取着
されたＵクレビス４４が回動可能に吊下されてい
る。前記吊下碍子４２の下端には下部キヤツプ金
具４５に取着された懸垂クランプ４６を介して電
線３が支持され、同じく下部キヤツプ金具４５に
は斜め上方へ向けて折曲する下部のアークホーン
４７が取着されている。又、前記上部キヤツプ金
具４３には側方に延在する支持金具４８が固定さ
れ、同金具４８先端には避雷碍子４９が傾斜して
吊下固定されている。さらに、前記避雷碍子４９
の下部電極４９ａには、下方に傾斜して前記下部
のアークホーン１７と所定の気中放電間隙Ｇをも
つて対向する上部のアークホーン５０が取着され
ている。 To explain this device with reference to FIG. 5, a U clevis 44 attached to an upper cap fitting 43 of a hanging insulator 42 is rotatable with respect to a U bolt 41 attached to a support arm 1 of the tower body. It is suspended. The electric wire 3 is supported at the lower end of the hanging insulator 42 via a suspension clamp 46 attached to a lower cap metal fitting 45, and the lower cap metal fitting 45 also has a lower arc horn 47 bent diagonally upward. is attached. Further, a supporting metal fitting 48 extending laterally is fixed to the upper cap metal fitting 43, and a lightning arrester 49 is slanted and suspended from the tip of the metal fitting 48. Furthermore, the lightning insulator 49
An upper arc horn 50 is attached to the lower electrode 49a, which is inclined downward and faces the lower arc horn 17 with a predetermined aerial discharge gap G therebetween.
（発明が解決しようとする問題点）
ところが、前記従来の装置は、支持金具４８に
対し避雷碍子４９が傾斜状態で装着されるととも
に、両アークホーン４７，５０間に所定の気中放
電間隙Ｇを採らなければならないため、避雷碍子
４９が水平に近く配置されて線路直交方向に張り
出し、同方向への寸法が大きくなつて碍子装置が
大型化し、外観上違味感を生じるという問題点が
あつた。又、吊下碍子４２が塔体の支持アーム１
に対し、Ｕボルト４１とＵクレビス４４を介して
吊下されているので、吊下碍子４２は線路方向及
び線路直交方向の回動が可能で、電線３が強風で
振れたり、装置自体が風圧を受けると、避雷碍子
４９と吊下碍子４２とが一体に、線路方向及び線
路直交方向の不規則な揺動をしていた。この結
果、前記吊下碍子４２には避雷碍子４９の揺動に
よる曲げ荷重が支持金具４８を介して不規則な捻
じれ力としと作用し、前記支持金具４８及び吊下
碍子４２の機械的強度が低減するという虞があつ
た。さらに、前記支持金具４８の変形により気中
放電間隙Ｇが拡がつて同間隙Ｇの絶縁強度が吊下
碍子４２の絶縁強度よりも大きくなり、吊下碍子
４２でフラツシオーバを起こしたり、あるいは気
中放電間隙Ｇが狭まつて開閉サージによる放電を
起こしたりするという虞もあつた。(Problems to be Solved by the Invention) However, in the conventional device, the lightning arrester 49 is installed in an inclined state with respect to the support fitting 48, and a predetermined aerial discharge gap G is formed between both the arc horns 47 and 50. As a result, the lightning arrester 49 is placed close to horizontally and protrudes in the direction perpendicular to the railway line, resulting in a problem in that the dimension in the same direction increases, making the insulator device larger and giving a strange appearance. Ta. In addition, the hanging insulator 42 is connected to the support arm 1 of the tower body.
On the other hand, since it is suspended via the U bolt 41 and U clevis 44, the hanging insulator 42 can be rotated in the direction of the track and in the direction perpendicular to the track. When the lightning arrester 49 and the hanging insulator 42 were hit, the lightning arrester 49 and the hanging insulator 42 were irregularly rocking in the direction of the track and in the direction perpendicular to the track. As a result, the bending load due to the swinging of the lightning arrester 49 acts on the hanging insulator 42 as irregular torsional force through the support fitting 48, thereby increasing the mechanical strength of the supporting fitting 48 and the hanging insulator 42. There was a fear that this would decrease. Furthermore, due to the deformation of the support fitting 48, the air discharge gap G expands, and the insulation strength of the gap G becomes greater than the insulation strength of the hanging insulator 42, causing a flashover in the hanging insulator 42, or There was also a fear that the discharge gap G would be narrowed and a discharge would occur due to switching surges.
この発明は上記の事情に鑑み、安定した架設状
態で、電線の振れや風圧で不規則な揺動を生ずる
ことなく、かつ、吊下碍子と避雷碍子の位置関係
が変化しても気中放電間隙長の変化量を小さくし
て、雷に起因する異常高電圧を両放電電極間で放
電させ、避雷碍子の機能を損なうことのない耐雷
ホーン碍子装置の提供を目的とする。 In view of the above circumstances, this invention has been developed to prevent air discharge in a stable installation state, without causing irregular swings due to wire swing or wind pressure, and even when the positional relationship between the hanging insulator and the lightning arrester changes. To provide a lightning protection horn insulator device which reduces the amount of change in gap length, allows abnormal high voltage caused by lightning to be discharged between both discharge electrodes, and does not impair the function of the lightning protection insulator.
発明の構成
（問題点を解決するための手段）
この発明は前記問題点を解決するため、塔体の
支持アーム１に対して吊下金具を連結し、同吊下
金具には線路方向へ回動可能に取付金具８を吊下
連結し、前記取付金具８には電線３を支持するた
めの吊下碍子２を取付金具８の回動方向と同方向
へ回動可能に連結して垂下し、同じく取付金具８
には取付アーム１９を介して、吊下碍子２に対し
線路方向に避雷碍子４を吊下固定し、前記吊下碍
子２の下部には下部金具を介して避雷碍子４側へ
延在させた課電側の放電電極２７を設けて、前記
避雷碍子４の下部に取着した放電電極２５と前記
課電側の放電電極２７とを所定の気中放電間隙Ｇ
１をもつて対向し、課電側の放電電極２７の先端
を、前記放電電極２５を通る垂線Ｈに対して吊下
碍子２と反対側の外方に位置させるとともに、水
平面から立ち上がらせるという構成を採用してい
る。Structure of the Invention (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention connects a hanging metal fitting to the support arm 1 of the tower body, and the hanging metal fitting is equipped with a cable that rotates in the direction of the railway line. A mounting bracket 8 is movably connected and suspended, and a hanging insulator 2 for supporting the electric wire 3 is connected to and suspended from the mounting bracket 8 so as to be rotatable in the same direction as the rotation direction of the mounting bracket 8. , also the mounting bracket 8
A lightning arrester 4 is suspended and fixed to the hanging insulator 2 in the direction of the railroad track via a mounting arm 19, and a lower part of the hanging insulator 2 is extended toward the lightning arrester 4 side via a lower metal fitting. A discharge electrode 27 on the energized side is provided, and the discharge electrode 25 attached to the lower part of the lightning arrester 4 and the discharge electrode 27 on the energized side are connected to each other at a predetermined aerial discharge gap G.
1, and the tip of the discharge electrode 27 on the energizing side is located outside on the opposite side from the hanging insulator 2 with respect to the perpendicular line H passing through the discharge electrode 25, and is raised from the horizontal surface. is adopted.
（作用）
この発明は前記手段を採用したことにより次の
ように作用する。(Operation) This invention operates as follows by employing the above means.
電線の振れや風圧などが装置に作用して、吊下
碍子が線路方向へ振れると、避雷碍子は吊下碍子
の振れにわずかに遅れて線路方向に振れる。又、
吊下碍子は線路直交方向へも振れる。従つて、前
記吊下碍子は避雷碍子の取付けによつて回動の自
由度を奪われることはなく、吊下碍子には無理な
捻じれの力が作用しない。 When the hanging insulator swings in the direction of the railway line due to swinging of the electric wire or wind pressure acting on the device, the lightning arrester swings in the direction of the railway line with a slight delay in the swinging of the hanging insulator. or,
The hanging insulator can also swing in the direction perpendicular to the railroad tracks. Therefore, the hanging insulator is not deprived of its degree of freedom of rotation due to the installation of the lightning arrester, and no unreasonable twisting force is applied to the hanging insulator.
着雪による電線の荷重、あるいは風圧荷重のバ
ランスの変化によつて、電線の線路方向への振れ
が吊下碍子に作用し、吊下碍子が線路方向、か
つ、避雷碍子から離間する方向へ振れたとき、避
雷碍子がわずかに遅れて振れることから気中放電
間隙が所定長から増加するが、課電側の放電電極
の先端を、避雷碍子の放電電極を通る垂線に対し
て吊下碍子と反対側の外方に位置させ、かつ、水
平面から立ち上げているので、課電側の放電電極
先端は取付金具と吊下碍子の連結部を中心とする
円弧上を移動し、前記垂線に接近することから、
気中放電間隙は僅かに拡がるのみで、同間隙の絶
縁強度が吊下碍子の絶縁強度を上回ることはな
い。従つて、落雷に起因する異常高電圧は常に気
中放電間隙で放電され、非直線性抵抗素子を備え
た避雷碍子を経て塔体の支持アームに流れる。
又、その後生じる続流アークは、前記気中放電間
隙と非直線性抵抗素子により遮断される。 Due to the load on the wire due to snow accumulation or the change in the balance of wind pressure load, the swing of the wire in the direction of the line acts on the hanging insulator, causing the hanging insulator to swing in the direction of the line and away from the lightning arrester. When the lightning arrester swings with a slight delay, the air discharge gap increases from the predetermined length. Since it is located outside on the opposite side and raised from the horizontal plane, the tip of the discharge electrode on the energizing side moves on an arc centered on the connection between the mounting bracket and the hanging insulator, approaching the perpendicular line. From doing that,
The air discharge gap widens only slightly, and the insulation strength of the gap does not exceed the insulation strength of the hanging insulator. Therefore, the abnormally high voltage caused by a lightning strike is always discharged in the air discharge gap and flows to the support arm of the tower body through the lightning arrester equipped with a non-linear resistance element.
Further, the subsequent arc generated thereafter is blocked by the air discharge gap and the non-linear resistance element.
吊下碍子が避雷碍子に接近する方向に振れたと
きは、逆に気中放電間隙は減少する傾向を示す
が、課電側の放電電極の下部金具との連結点付近
の距離を初期に大きく設定していることから、絶
縁強度が低下することはない。 When the hanging insulator swings in the direction approaching the lightning arrester, the air discharge gap tends to decrease. Because of this setting, the insulation strength will not decrease.
又、強風による電線の線路直交方向への振れが
吊下碍子に作用し、吊下碍子が線路直交方向に振
れても、避雷碍子下部の放電電極を工夫し、線路
直交方向に延在させることにより、気中放電間隙
を一定に保つことができる。 In addition, even if the swinging of the electric wire in the direction perpendicular to the line due to strong winds acts on the hanging insulator, and the hanging insulator swings in the direction perpendicular to the line, the discharge electrode at the bottom of the lightning arrester should be devised so that it extends in the direction perpendicular to the line. This allows the air discharge gap to be kept constant.
（実施例）
以下、この発明を具体化した一実施例を第１〜
３図に基づいて詳細に説明する。(Example) Hereinafter, an example embodying this invention will be described in the first to
This will be explained in detail based on FIG.
この実施例の耐雷ホーン碍子装置は、概略的に
見て、塔体の支持アーム１先端下面に吊下され、
かつ、電線３を支持する複数の懸垂碍子２Ａによ
り構成された既設の吊下碍子２と、その上部側方
に取着された避雷碍子４と、前記避雷碍子４の重
量と均衡して避雷碍子４を垂直状態（重力方向）
に吊下し、異常振動を防止するための重錘５とに
より構成されている。 Schematically, the lightning horn insulator device of this embodiment is suspended from the lower surface of the tip of the support arm 1 of the tower body,
In addition, the existing suspension insulator 2 constituted by a plurality of suspension insulators 2A supporting the electric wire 3, the lightning arrester 4 attached to the upper side of the suspension insulator 2, and the lightning arrester insulator 4 in balance with the weight of the lightning arrester 4. 4 in vertical state (gravity direction)
It is configured by a weight 5 that is suspended from the holder and a weight 5 for preventing abnormal vibrations.
支持アーム１には吊下金具６がボルトで固定さ
れ、同金具６には同じく吊下金具としてのＵクレ
ビス７が回動方向に連結されている。前記Ｕクレ
ビス７には取付金具としての上部ホーン取付金具
８が軸９により線路方向（矢印Ｐ，Ｑ方向）の回
動可能に連結され、同金具８の下方には軸１０に
より線路方向の相対回動可能に連結された直角ク
レビスリンク１１と、同直角クレビスリンク１１
に軸１２により線路直交方向の相対回動可能に連
結されたボールクレビス１３を介して吊下碍子２
が連結吊下されている。 A hanging metal fitting 6 is fixed to the support arm 1 with bolts, and a U clevis 7, which also serves as a hanging metal fitting, is connected to the metal fitting 6 in the rotation direction. An upper horn mounting bracket 8 serving as a mounting bracket is connected to the U clevis 7 so as to be rotatable in the track direction (arrows P and Q directions) by a shaft 9, and a shaft 10 is provided below the upper horn mounting bracket 8 to rotate relative to each other in the track direction. Right angle clevis link 11 rotatably connected and right angle clevis link 11
The hanging insulator 2 is connected via a ball clevis 13 connected by a shaft 12 so as to be relatively rotatable in a direction perpendicular to the track.
are connected and suspended.
前記吊下碍子２の下部には下部金具としてのソ
ケツトクレビス１４を介して同じく下部金具とし
ての下部ホーン取付金具１５が軸１６により線路
方向の相対回動可能に連結され、同金具１５の下
方には電線３を支持する懸垂クランプ１７が軸１
８により線路方向の相対回動可能に連結されてい
る。 A lower horn mounting fitting 15, which also serves as a lower fitting, is connected to the lower part of the hanging insulator 2 through a socket clevis 14, which also serves as a lower fitting, so as to be relatively rotatable in the track direction. The suspension clamp 17 that supports the electric wire 3 is attached to the shaft 1
8 for relative rotation in the track direction.
第１図に示すように、前記上部ホーン取付金具
８の右側にはボルト２１により線路方向に延びる
取付アーム１９、左側には線路方向に、かつ、斜
め下方へ延びる取付アーム２０がそれぞれ片持ち
固定されている。 As shown in FIG. 1, a mounting arm 19 extending in the track direction is fixed to the right side of the upper horn mounting bracket 8 by a bolt 21, and a mounting arm 20 extending diagonally downward in the track direction is fixed to the left side in a cantilever manner. has been done.
なお、両取付アーム１９，２０は上部ホーン取
金具８から既設のアークホーンを離脱させた後、
上部アークホーン取付金具８に対して、前記ボル
ト２１により固定されている。 Note that both mounting arms 19 and 20 are installed after removing the existing arc horn from the upper horn fitting 8.
It is fixed to the upper arc horn mounting bracket 8 by the bolts 21.
前記取付アーム１９先端に固着した取付板２２
下面には、前記避雷碍子４がボルト２３により垂
直状態で固定され、前記吊下碍子２との間に所定
のクリアランスＣ１をもつて離隔されている。
又、取付アーム２０の先端には重錘５がボルト２
４により固定されている。そして、静止状態では
前記避雷碍子４と重錘５とが軸９が中心に均衡す
るように設定されている。 A mounting plate 22 fixed to the tip of the mounting arm 19
The lightning arrester 4 is vertically fixed to the lower surface by bolts 23, and is separated from the hanging insulator 2 by a predetermined clearance C1.
Also, a weight 5 is attached to the bolt 2 at the tip of the mounting arm 20.
It is fixed by 4. In a stationary state, the lightning arrester 4 and the weight 5 are set so as to be balanced with the shaft 9 at the center.
前記避雷碍子４の下部電極４ａには前記軸１２
を中心とする円弧状に湾曲形成された放電電極と
してのアークホーン２５（第３図参照）が線路直
交方向に延在して取着されている。又、前記避雷
碍子４の上下にはそれぞれ前記取付板２２と下部
電極４ａに片持ち支持され、かつ、同避雷碍子４
を囲繞するように一対のアーキングリング２６，
２６が設けられ、雷サージによつて避雷碍子４が
異常放電を起こした場合、避雷碍子４からアーク
ジエツトを速やかに移行するようにしている。 The shaft 12 is attached to the lower electrode 4a of the lightning arrester 4.
An arc horn 25 (see FIG. 3), which serves as a discharge electrode and is curved in an arc shape centered at , is attached to extend in a direction perpendicular to the line. Further, the lightning arrester 4 is cantilever-supported on the upper and lower sides of the mounting plate 22 and the lower electrode 4a, respectively.
a pair of arcing rings 26 surrounding the
26 is provided so that when the lightning arrester 4 causes abnormal discharge due to a lightning surge, the arc jet is quickly transferred from the lightning arrester 4.
一方、前記下部ホーン取付金具１５には線路方
向に課電側の放電電極としてのアークホーン２７
がボルト２８により取着され、前記アークホーン
２５と、所定の気中放電間隙Ｇ１をもつて対向し
ている。同アークホーン２７は水平部２７ａと、
同水平部２７ａ先端に設けた立上がり部２７ｂと
により一体に構成され、下部ホーン取付金具１５
との連結点２７ｃ付近は初期状態で気中放電間隙
Ｇ１より大きな間隙長に設定されている。又、同
アークホーン２７の先端は前記アークホーン２５
を通る垂線Ｈ（重力方向の線）よりも外方に延在
されている。なお、この気中放電間隙Ｇ１は開閉
サージによつてアークホーン２５，２７間で放電
が起きない距離と、気中放電間隙Ｇ１の絶縁強度
が吊下碍子２の絶縁強度を上回らない距離との中
間位置に余裕をもつて設定されている。 On the other hand, the lower horn mounting bracket 15 has an arc horn 27 as a discharge electrode on the energized side in the line direction.
is attached by a bolt 28 and faces the arc horn 25 with a predetermined air discharge gap G1. The arc horn 27 has a horizontal portion 27a,
The lower horn mounting bracket 15 is integrated with a rising portion 27b provided at the tip of the horizontal portion 27a.
The vicinity of the connecting point 27c is set to have a gap length larger than the air discharge gap G1 in the initial state. Further, the tip of the arc horn 27 is connected to the arc horn 25.
It extends outward from the perpendicular line H (line in the direction of gravity) passing through. Note that this air discharge gap G1 is defined by the distance where no discharge occurs between the arc horns 25 and 27 due to opening/closing surges, and the distance where the insulation strength of the air discharge gap G1 does not exceed the insulation strength of the hanging insulator 2. It is set at an intermediate position with some margin.
又、前記取付アーム１９の基端両側には第１，
３図に示すように、下方へ傾斜して延在された放
電電極としての一対のアークホーン２９，２９が
取付アーム１９と一体に前記ボルト２１により固
定されていて、前記下部ホーン取付金具１５に対
しボルト３１により固定され、かつ、線路方向に
延在された放電電極としてのアークホーン３０と
所定の気中放電間隙Ｇ２をもつて対向するととも
に、アークホーン２９は前記アークホーン２５と
所定のクリアランスＣ２をもつて離隔している。 Further, on both sides of the base end of the mounting arm 19, first,
As shown in FIG. 3, a pair of arc horns 29, 29 serving as discharge electrodes extend downwardly and are fixed integrally with the mounting arm 19 by the bolts 21, and are attached to the lower horn mounting bracket 15. The arc horn 29 is fixed by a counter bolt 31 and faces an arc horn 30 as a discharge electrode extending in the line direction with a predetermined air discharge gap G2, and the arc horn 29 has a predetermined clearance with the arc horn 25. They are separated by C2.
次に、前記のように構成した耐雷ホーン碍子装
置の作用について説明する。 Next, the operation of the lightning horn insulator device configured as described above will be explained.
第２図に示すように電線３への風圧あるいは着
雪などによつて電線３の荷重バランスが変化して
電線３が線路方向に、かつ、避雷碍子４から離間
する方向に振れると、電線３の振れが懸垂クラン
プ１７を介して吊下碍子２に作用し、吊下碍子２
は軸１０を中心に線路方向（矢印Ｐ，Ｑ方向）へ
振れる。この吊下碍子２の回動に伴い、避雷碍子
４及び重錘５が取付アーム１９，２０及び上部ホ
ーン取付金具８とともにＵクレビス７と吊下金具
６との連結点Ｚを中心にして同方向に遅れて揺動
され、吊下碍子２と避雷碍子４との傾斜角度には
若干の開き（５〜10゜）が生じ、避雷碍子２のア
ークホーン２７は避雷碍子４のアークホーン２５
に対し離間する方向へ移動する。ところが、アー
クホーン２７の先端はアークホーン２５を通る垂
線Ｈに対して吊下碍子２と反対側に延在されると
ともに、水平面から立ち上げられているので、ア
ークホーン２７の立上がり部２７ｂは前記垂線Ｈ
に接近し、気中放電間隙Ｇ１は僅かに拡がるのみ
で、同気中放電間隙Ｇ３の絶縁強度が吊下碍子２
の絶縁強度を上回ることはない。このため、落雷
に起因する異常高電圧が電線３に加わつても、こ
の高電圧はアークホーン２５，２７間の気中放電
間隙Ｇ３で放電され、避雷碍子４に内蔵された非
直線性抵抗素子を経て塔体の支持アーム１に流れ
る。又、その後生じる続流アークは、前記間隙Ｇ
３と非直線性抵抗素子により遮断される。 As shown in FIG. 2, when the load balance of the wire 3 changes due to wind pressure or snow accumulation on the wire 3, and the wire 3 swings toward the track and away from the lightning arrester 4, the wire 3 The vibration of the suspension acts on the hanging insulator 2 through the suspension clamp 17, and the hanging insulator 2
swings in the direction of the track (in the direction of arrows P and Q) about axis 10. With this rotation of the hanging insulator 2, the lightning arrester 4 and the weight 5 move together with the mounting arms 19, 20 and the upper horn mounting bracket 8 in the same direction around the connection point Z between the U clevis 7 and the hanging bracket 6. As a result, there is a slight difference (5 to 10 degrees) in the angle of inclination between the hanging insulator 2 and the lightning arrester 4, and the arc horn 27 of the lightning arrester 2 is slightly different from the arc horn 25 of the lightning arrester 4.
Move in the direction away from the object. However, since the tip of the arc horn 27 extends to the opposite side of the hanging insulator 2 with respect to the perpendicular line H passing through the arc horn 25 and is raised from the horizontal plane, the rising portion 27b of the arc horn 27 is Perpendicular H
, the air discharge gap G1 widens only slightly, and the insulation strength of the air discharge gap G3 increases to that of the hanging insulator 2.
The insulation strength of the Therefore, even if an abnormal high voltage due to a lightning strike is applied to the electric wire 3, this high voltage is discharged in the air discharge gap G3 between the arc horns 25 and 27, and the nonlinear resistance element built in the lightning arrester 4 is and then flows to the support arm 1 of the tower body. Further, the subsequent arc that occurs after that is caused by the gap G.
3 and is blocked by a nonlinear resistance element.
このとき、避雷碍子４及び重錘５は取付アーム
１９，２０及び上部ホーン取付金具８とともに連
結点Ｚを中心に揺動されるため、避雷碍子４が重
錘５、及び取付アーム１９，２０、上部ホーン取
付金具８、さらには吊下碍子２などに捻じれを起
こす応力集中が生じない。従つて、装置としての
機械的強度は維持される。 At this time, since the lightning insulator 4 and the weight 5 are swung together with the mounting arms 19, 20 and the upper horn mounting bracket 8 about the connection point Z, the lightning arrester 4 is attached to the weight 5 and the mounting arms 19, 20, Stress concentration that causes twisting does not occur in the upper horn mounting bracket 8, furthermore, in the hanging insulator 2, etc. Therefore, the mechanical strength of the device is maintained.
吊下碍子２が線路方向に、かつ、避雷碍子４に
接近する方向に振れると、吊下碍子２と避雷碍子
４との間隔は前記とは逆に若干狭まる。しかしな
がら、アークホーン２７の下部ホーン取付金具１
５との連結部２７ｃ付近は初期状態で気中放電間
隙Ｇ１より大きな間隙長に設定してあるため、避
雷碍子４のアークホーン２５に接近しても間隙長
の減少は相殺され、開閉サージによつてアークホ
ーン２５，２７間で放電を起こすことはない。 When the hanging insulator 2 swings in the direction of the railroad track and in the direction approaching the lightning arrester 4, the distance between the hanging insulator 2 and the lightning arrester 4 narrows slightly, contrary to the above. However, the lower horn mounting bracket 1 of the arc horn 27
5, the gap length is set to be larger than the air discharge gap G1 in the initial state, so even if the arc horn 25 of the lightning arrester 4 is approached, the decrease in the gap length is offset and the opening/closing surge is Therefore, no discharge occurs between the arc horns 25 and 27.
又、第３図に示すように強風により電線３が線
路直交方向に振れると、電線３の振れが懸垂クラ
ンプ１７を介して避雷碍子２に作用し、吊下碍子
２が線路直交方向（矢印Ｒ，Ｓ方向）に振れ、避
雷碍子４及び重錘５が取付アーム１９，２０及び
上部ホーン取付金具８とともに前記連結点Ｚを中
心に線路直交方向へ遅れて揺動する。この状態で
は、吊下碍子２が、直角クレビスリング１１の軸
１２を中心に回動され、前記吊下碍子２下部のア
ークホーン２７は軸１２を中心に円弧状に移動す
るとともに、避雷碍子４下端の湾曲形成されたア
ークホーン２５の沿面にほぼ対応して移動するの
で、気中放電間隙Ｇ１はほぼ一定に保持される。
又この場合にも、避雷碍子４や重錘５、及び取付
アーム１９，２０、上部ホーン取付金具８、さら
には吊下碍子２などに捻じれを起こす応力集中が
生じず、装置としての機械的強度は維持される。 Furthermore, as shown in FIG. 3, when the wire 3 swings in the direction perpendicular to the track due to strong winds, the swing of the wire 3 acts on the lightning arrester 2 via the suspension clamp 17, causing the suspension insulator 2 to swing in the direction perpendicular to the track (arrow R . In this state, the hanging insulator 2 is rotated around the shaft 12 of the right-angled clevis ring 11, and the arc horn 27 at the bottom of the hanging insulator 2 moves in an arc around the shaft 12, and the lightning arrester 2 Since it moves approximately in accordance with the creeping surface of the arc horn 25 whose lower end is curved, the aerial discharge gap G1 is maintained approximately constant.
Also in this case, stress concentration that causes twisting does not occur in the lightning arrester 4, the weight 5, the mounting arms 19, 20, the upper horn mounting bracket 8, and even the hanging insulator 2, and the mechanical stability of the device is reduced. Strength is maintained.
さらに、アークホーン２７を下部ホーン取付金
具１５に対し取付けたので、別の取付金具等を吊
下碍子２の下端に設けなくてもよく、碍子連長の
増加を防止でき、既設の碍子装置への適用が容易
である。 Furthermore, since the arc horn 27 is attached to the lower horn mounting bracket 15, there is no need to provide a separate mounting bracket or the like at the lower end of the hanging insulator 2, and an increase in the length of the insulator can be prevented, and it can be easily attached to the existing insulator device. It is easy to apply.
又、避雷碍子４と塔体とのクリアランスを拡大
する必要はなく、既設の塔体への装置の装設が容
易となる。 Further, there is no need to enlarge the clearance between the lightning arrester 4 and the tower body, and the device can be easily installed in the existing tower body.
一方、異常な汚損その他によつて吊下碍子２の
絶縁強度が低下し、吊下碍子２の沿面でアークが
発生したような場合は、アークホーン２９，３０
間の気中放電間隙Ｇ２で消弧され、吊下碍子２の
焼損が防止されるとともに、塔体へのアークの伝
播が防止される。 On the other hand, if the insulation strength of the hanging insulator 2 is reduced due to abnormal contamination or other causes and an arc occurs along the creeping surface of the hanging insulator 2, the arc horns 29, 30
The arc is extinguished in the air discharge gap G2 in between, preventing the hanging insulator 2 from burning out and preventing the arc from propagating to the tower body.
なお、この実施例の装置は、塔体の支持アーム
１に装着された既設の吊下碍子２に対し、避雷碍
子４及び重錘５の取付アーム１９，２０をアダプ
タとして取着して装置を構成したものであるが、
新設の吊下碍子２に対し、前記両取付アーム１
９，２０を予め取着し、避雷碍子４及び重錘５を
取付けて装置を構成することもできる。従つて、
この装置はその適用範囲が拡大されて非常に実用
的である。 In addition, in the device of this embodiment, the mounting arms 19 and 20 of the lightning arrester 4 and the weight 5 are attached as adapters to the existing hanging insulator 2 attached to the support arm 1 of the tower body. It is composed of
Both mounting arms 1 are attached to the newly installed hanging insulator 2.
9 and 20 may be attached in advance, and the lightning arrester 4 and the weight 5 may be attached to configure the device. Therefore,
This device has a wide range of applications and is very practical.
又、この発明は次のように実施してもよい。 Moreover, this invention may be implemented as follows.
(1) 第４図に示すように、避雷碍子４及び重錘５
の取付アーム１９，２０を、一体型に取付金具
３２とすること。(1) As shown in Figure 4, lightning arrester 4 and weight 5
The mounting arms 19, 20 of are integrated into a mounting bracket 32.
この別例では、取付金具３２を上部ホーン取
付金具８に対して一度に取付けできるので、作
業が容易となる。 In this alternative example, the mounting bracket 32 can be attached to the upper horn mounting bracket 8 at one time, making the work easier.
(2) 前記実施例におけるアークホーン２７を水平
方向ならびに上下方向の位置調節可能に設ける
こと。(2) The arc horn 27 in the above embodiment is provided so that its position can be adjusted in the horizontal and vertical directions.
(3) 重錘５を複数のブロツクにより構成し、同ブ
ロツクを着脱して重錘５の重量を調節するこ
と。(3) The weight 5 is composed of a plurality of blocks, and the weight of the weight 5 is adjusted by attaching and detaching the blocks.
発明の効果
以上詳述したように、この発明によれば電線の
振動で碍子装置が異常な振れ方をしないので、吊
下碍子やその取付金具に無理な力がかからず、装
置の耐久性を向上できるとともに、吊下碍子に対
し避雷碍子を傾斜状態に張り出して装着した従来
の碍子装置と比較して装置の線路方向の寸法を小
さくして同装置を小型化でき、環境調和を図るこ
とができる。又、吊下碍子に設けた課電側の放電
電極の先端を避雷碍子に設けた放電電極の垂線に
対して吊下碍子と反対側に延在させるとともに、
水平面から立ち上げているので、吊下碍子の振れ
と避雷碍子の振れとの遅れによる気中放電間隙の
変化量を小さくでき、従つて、この気中放電間隙
の絶縁強度が吊下碍子の絶縁強度を上回ることは
なく、落雷に起因する異常高電圧を常に気中放電
間隙で放電できる優れた効果がある。Effects of the Invention As detailed above, according to the present invention, the insulator device does not swing abnormally due to the vibration of the electric wire, so no excessive force is applied to the hanging insulator or its mounting bracket, and the durability of the device is improved. In addition, compared to the conventional insulator device in which the lightning arrester is attached to the suspended insulator with the lightning arrester projecting out in an inclined state, the dimensions of the device in the line direction can be reduced, thereby making the device more compact and environmentally friendly. Can be done. Further, the tip of the discharge electrode on the energizing side provided on the hanging insulator is extended to the side opposite to the hanging insulator with respect to the perpendicular to the discharge electrode provided on the lightning arrester,
Since it is set up from a horizontal plane, the amount of change in the air discharge gap due to the delay between the swing of the hanging insulator and the swing of the lightning arrester can be reduced. It has the excellent effect of constantly discharging abnormally high voltages caused by lightning strikes in the air discharge gap without exceeding the strength.
第１図はこの発明を具体化した一実施例を示す
正面図、第２図は作用状態を示す正面図、第３図
は作用状態を示す側面図、第４図は避雷碍子及び
重錘の取付金具の別例を示す正面図、第５図は従
来例を示す正面図である。
１……支持アーム、２……吊下碍子、３……電
線、４……避雷碍子、５……重錘、６……吊下金
具、７……吊下金具としてのＵクレビス、８（１
５）……上部（下部）ホーン取付金具、１７……
懸垂クランプ、１９，２０……取付アーム、２
５，２７，２９，３０……放電電極としてのアー
クホーン、Ｃ１，Ｃ２……クリアランス、Ｈ……
垂線、Ｇ１，Ｇ２，Ｇ３……気中放電間隙、Ｚ…
…連結点。
Fig. 1 is a front view showing an embodiment embodying the present invention, Fig. 2 is a front view showing the working state, Fig. 3 is a side view showing the working state, and Fig. 4 shows the lightning arrester and the weight. A front view showing another example of the mounting bracket, and FIG. 5 is a front view showing a conventional example. 1... Support arm, 2... Hanging insulator, 3... Electric wire, 4... Lightning arrester, 5... Weight, 6... Hanging fitting, 7... U clevis as hanging fitting, 8 ( 1
5)... Upper (lower) horn mounting bracket, 17...
Suspension clamp, 19, 20...Mounting arm, 2
5, 27, 29, 30... Arc horn as discharge electrode, C1, C2... Clearance, H...
Perpendicular line, G1, G2, G3... air discharge gap, Z...
...connection point.
Claims (1)
し、同吊下金具には線路方向へ回動可能に取付金
具８を吊下連結し、前記取付金具８には電線３を
支持するための吊下碍子２を取付金具８の回動方
向と同方向へ回動可能に連結して垂下し、同じく
取付金具８には取付アーム１９を介して、吊下碍
子２に対し線路方向に避雷碍子４を吊下固定し、
前記吊下碍子２の下部には下部金具を介して避雷
碍子４側へ延在させた課電側の放電電極２７を設
けて、前記避雷碍子４の下部に取着した放電電極
２５と前記課電側の放電電極２７とを所定の気中
放電間隙Ｇ１をもつて対向し、課電側の放電電極
２７の先端を、前記放電電極２５を通る垂線Ｈに
対して吊下碍子２と反対側の外方に位置させると
ともに、水平面から立ち上がらせたことを特徴と
する耐雷ホーン碍子装置。 ２ 避雷碍子４は吊下碍子２に対し、同避雷碍子
４と反対側に取付アーム２０を介して取着された
重錘５により垂直状態に保持されている特許請求
の範囲第１項に記載の耐雷ホーン碍子装置。 ３ 課電側の放電電極２７は下部金具としてのホ
ーン取付金具１５に対し取着されている特許請求
の範囲第１項に記載の耐雷ホーン碍子装置。[Scope of Claims] 1. A hanging fitting is connected to the support arm 1 of the tower body, and a mounting fitting 8 is suspended and connected to the hanging fitting so as to be rotatable in the direction of the railway line. The hanging insulator 2 for supporting the electric wire 3 is connected and suspended so as to be rotatable in the same direction as the rotation direction of the mounting bracket 8, and the hanging insulator 2 is connected to the mounting bracket 8 via a mounting arm 19. 2, a lightning arrester 4 is suspended and fixed in the direction of the railway line,
A discharge electrode 27 on the energized side extending toward the lightning arrester 4 side via a lower metal fitting is provided at the lower part of the hanging insulator 2, and the discharge electrode 25 attached to the lower part of the lightning arrester 4 and the charger are connected to each other. The discharge electrode 27 on the power supply side faces the discharge electrode 27 with a predetermined air discharge gap G1, and the tip of the discharge electrode 27 on the power supply side is located on the side opposite to the hanging insulator 2 with respect to the perpendicular line H passing through the discharge electrode 25. A lightning-resistant horn insulator device characterized in that it is located outside of the arc and stands up from a horizontal surface. 2. According to claim 1, the lightning arrester 4 is held vertically with respect to the hanging insulator 2 by a weight 5 attached via a mounting arm 20 on the opposite side of the suspension insulator 4. lightning-resistant horn insulator device. 3. The lightning-proof horn insulator device according to claim 1, wherein the discharge electrode 27 on the energizing side is attached to the horn fitting 15 as the lower fitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22102185A JPS6280922A (en) | 1985-10-03 | 1985-10-03 | Lightning resistant horn porcelain unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22102185A JPS6280922A (en) | 1985-10-03 | 1985-10-03 | Lightning resistant horn porcelain unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6280922A JPS6280922A (en) | 1987-04-14 |
| JPH0250569B2 true JPH0250569B2 (en) | 1990-11-02 |
Family
ID=16760241
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22102185A Granted JPS6280922A (en) | 1985-10-03 | 1985-10-03 | Lightning resistant horn porcelain unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6280922A (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0743973B2 (en) * | 1988-07-28 | 1995-05-15 | 日本碍子株式会社 | Lightning arrester device |
| JPH0743974B2 (en) * | 1989-02-03 | 1995-05-15 | 日本碍子株式会社 | Lightning protection horn insulator device |
| JPH0758603B2 (en) * | 1989-11-28 | 1995-06-21 | 日本碍子株式会社 | Discharge electrode in insulator device |
-
1985
- 1985-10-03 JP JP22102185A patent/JPS6280922A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6280922A (en) | 1987-04-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EXPY | Cancellation because of completion of term |