JPH037845Y2 - - Google Patents
Info
- Publication number
- JPH037845Y2 JPH037845Y2 JP1985015496U JP1549685U JPH037845Y2 JP H037845 Y2 JPH037845 Y2 JP H037845Y2 JP 1985015496 U JP1985015496 U JP 1985015496U JP 1549685 U JP1549685 U JP 1549685U JP H037845 Y2 JPH037845 Y2 JP H037845Y2
- Authority
- JP
- Japan
- Prior art keywords
- rib
- base metal
- metal fitting
- tip
- cap
- 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 22
- 239000002184 metal Substances 0.000 claims description 22
- 239000010953 base metal Substances 0.000 claims description 20
- 150000003839 salts Chemical class 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 6
- 229910052573 porcelain Inorganic materials 0.000 description 7
- 230000005540 biological transmission Effects 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 5
- 238000009413 insulation Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 230000006378 damage Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 101100450138 Neurospora crassa (strain ATCC 24698 / 74-OR23-1A / CBS 708.71 / DSM 1257 / FGSC 987) hat-2 gene Proteins 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
Landscapes
- Insulators (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は送配電線路に使用される耐塩用碍子に
関するものである。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a salt-resistant insulator used in power transmission and distribution lines.
（従来の技術）
送配電線路に使用される従来の耐塩用碍子とし
ては、第３図に示すように上端を電線支持部２１
とした胴部２２から下面にリブ２３を備えた笠２
４を突設するとともに、胴部２２の下面に設けら
れて前記笠２４から突出させた金属製の支持ピン
２５に耐塩皿２６を取付けて前記笠２４の内側を
遮蔽したものが知られている（例えば実公昭39−
3544号公報）。ところがこのような従来の耐塩用
碍子は閃絡した場合に支持ピン２５から出たアー
クが笠２４の裏面をはうために笠２４がアーク熱
により破損し易く、また全体が肉薄に形成されて
いるので笠２４の破損が全体に及び電線支持機能
を失い易いこと、金属製の支持ピン２５の先端が
胴部２２の内側にあるため支持ピン２５が腐食膨
脹したとき磁器質が押し拡げられ破壊し易いこ
と、電線と支持ピン２５の上端との間の磁器質の
肉厚が薄いので雷サージ等の過大電圧により貫通
されて絶縁破壊を生じ易いこと、および碍子本体
と耐塩皿との２部分からなるのでコスト高となる
うえ取付作業が繁雑化すること等の多くの問題点
があつた。また、笠部を構成する外側リブを内側
にわん曲させて内側リブとの間に空間を形成した
ものが知られている（例えば実公昭24−5584号公
報、実公昭30−6673号公報）が、前例と同様に笠
の内側に支持ピンが固設されているのでアークが
笠の内側にこもつて碍子が破損したり、電線と支
持ピンとの間で絶縁破壊を生じ易いという問題点
があつた。(Prior Art) As shown in FIG.
A hat 2 with ribs 23 on the lower surface from the body 22.
4 is provided protrudingly, and a salt-resistant plate 26 is attached to a metal support pin 25 provided on the lower surface of the body 22 and projected from the cap 24 to shield the inside of the cap 24. (For example, Jikko Sho 39-
Publication No. 3544). However, in such conventional salt-resistant insulators, when a flash occurs, the arc emitted from the support pin 25 crawls on the back side of the shade 24, so that the shade 24 is easily damaged by the arc heat, and the entire structure is thin. Since the cap 24 is damaged as a whole and loses its wire support function, the tip of the metal support pin 25 is inside the body 22, so when the support pin 25 corrodes and expands, the porcelain material is pushed out and destroyed. The thickness of the porcelain material between the electric wire and the upper end of the support pin 25 is thin, so it is easy to be penetrated by excessive voltage such as a lightning surge and cause insulation breakdown. This has caused many problems, including high costs and complicated installation work. It is also known that the outer ribs constituting the cap are curved inward to form a space between them and the inner ribs (for example, Publication of Utility Model Publication No. 24-5584, Publication of Publication of Utility Model Publication No. 6673-1973). However, as in the previous example, the support pins are fixed inside the shade, so there are problems such as the arc getting stuck inside the shade and damaging the insulator, or dielectric breakdown between the wire and the support pin. It was hot.
（考案が解決しようとする問題点）
本考案は上記のような従来の問題点を解消し、
閃絡時のアークにも破損を生じ難く、下部金具が
腐食しても破壊の虞れがなく、過電圧による絶縁
破壊を生じ難いうえに、笠の裏面に雨、霧等が浸
入し難く高い汚損耐電圧を得ることができる耐塩
用碍子を目的として完成されたものである。(Problems that the invention attempts to solve) This invention solves the conventional problems as mentioned above,
It is less likely to be damaged by an arc during a flashover, there is no risk of destruction even if the lower metal fittings corrode, it is less likely to cause insulation breakdown due to overvoltage, and it is difficult for rain, fog, etc. to enter the back side of the hat, resulting in a high level of contamination. It was developed for the purpose of being a salt-resistant insulator that can withstand voltage.
（問題点を解決するための手段）
上記の課題を解決するためになされた本考案
は、上端に電線支持部を備えた胴部に外側リブと
内側リブとよりなり、その開口部を下向きにした
笠部を形成するとともに外側リブを内側へ向けて
大きくわん曲させて内側リブを覆いその先端径を
内側リブの外径より小さくして外側リブと内側リ
ブとの間に空間を形成してなる耐塩用碍子におい
て、前記胴部には下方に延長して笠部より突出す
る絶縁体である中実の支持部を一体形成し、該支
持部の下端にはその外側を把持する椀形のベース
金具部を備えた下部金具を前記笠部の開口部から
離隔して取付けるとともに前記外側リブの先端径
はベース金具部の外径より大きくして外側リブの
先端の直下域をベース金具部から離隔したことを
特徴とするものである。(Means for Solving the Problems) The present invention, which was made to solve the above problems, consists of a body section with a wire support section at the upper end, an outer rib and an inner rib, and an opening facing downward. At the same time, the outer rib is largely curved inward to cover the inner rib, and its tip diameter is made smaller than the outer diameter of the inner rib to form a space between the outer rib and the inner rib. In this salt-resistant insulator, a solid support part, which is an insulator, is integrally formed in the body part and extends downward and protrudes from the cap part, and a bowl-shaped support part is provided at the lower end of the support part to grip the outside thereof. The lower metal fitting with the base metal fitting part is installed at a distance from the opening of the cap, and the diameter of the tip of the outer rib is larger than the outer diameter of the base metal fitting part, so that the area immediately below the tip of the outer rib is separated from the base metal fitting part. It is characterized by being separated.
（実施例）
次に本考案を図示の実施例について詳細に説明
すれば、１は磁器質の絶縁体からなる中実の胴
部、２は該胴部１の上端に形成された電線取付
部、３は胴部１を下方へ延長して後記する笠部１
０から突出させて一体形成された太径で中実の円
柱状の絶縁体である支持部である。支持部３の下
端には該支持部３を外側から把持する椀形のベー
ス金具部４と、該ベース金具部４から下方に突設
された取付ピン５とを備えた下部金具６が後記す
る笠部１０の開口部から離隔して取付けられてい
る。下部金具６はベース金具部４と前記支持部３
との間にセメントなどの充填剤７を充填すること
によつて支持部３を支持するものであつて、取付
ピン５の下端のねじ部８と該ねじ部８に螺装され
たナツト９をもつて下部金具６を送配電線鉄搭の
鉄塔アーム等に固定することにより、碍子全体を
直立姿勢で固定することができる。また、１０は
胴部１から外方へ突設された笠部であつて、その
外側リブ１１は第１図に図示のように前記支持部
３に向けて内側に大きく円弧状にわん曲させてそ
の先端１２を内向きとし、先端径Ｄを笠部１０の
下面に突設した内側リブ１３の外径D1より小さ
いものとする。図示の実施例では内側リブ１３は
一重であるが、内側リブ１３が二重三重の場合に
は外径D1として最外側の内側リブ１３の外径D1
を取るものとする。また、外側リブ１１の先端径
Ｄは下部金具６のベース金具部４の外径D2より
も大きくなるようにする。このように外側リブ１
１を内側へわん曲させることによつて外側リブ１
１の内面に下方からの風に対して遮蔽された空間
１４を形成するとともに、降雨時における外側リ
ブ１１の先端１２から落下する水滴が下部金具６
に当つて橋絡することを防止する。外側リブ１１
の先端径Ｄが下部金具６のベース金具部４の外径
D2と同等ないし小さいと水滴は外側リブ１１の
先端１２から落下し、下部金具６に向う瞬間に外
側リブ１１の先端１２と下部金具６との間に閃絡
経路が形成されて絶縁性能の低下を招くため、先
端径Ｄはベース金具部４の外径D2よりも大きく
して外側リブ１１の先端の直下域をベース金具部
４から離隔しておくことが必要であり、また落下
する水滴は電磁力により下部金具６の方へ引寄せ
られる傾向があるため、先端径Ｄはベース金具部
４の外径D2よりも20〜30mm程度大きくしておく
ことが好ましい。なお、第２図に示すように笠部
１０の上端と電線取付部２との間に円盤状の空起
１５を形成すれば、表面漏洩距離が増加して更に
優れた特性を持つ耐塩用碍子を得ることができ
る。上記の実施例はいずれもタイトツプ型の耐塩
用碍子に関するものであるが、電線取付部を金属
製キヤツプとしてクランプを取付けたクランプト
ツプ型としてもよいことは言うまでもない。(Embodiment) Next, the present invention will be described in detail with reference to the illustrated embodiment. 1 is a solid body made of a porcelain insulator, and 2 is an electric wire attachment portion formed at the upper end of the body 1. , 3 is a cap 1 which will be described later by extending the trunk 1 downward.
The support portion is a solid cylindrical insulator with a large diameter that is integrally formed and protrudes from the support portion. A lower metal fitting 6, which will be described later, is provided at the lower end of the support part 3 and includes a bowl-shaped base metal part 4 that grips the support part 3 from the outside, and a mounting pin 5 that projects downward from the base metal part 4. It is attached away from the opening of the cap 10. The lower metal fitting 6 is connected to the base metal fitting part 4 and the support part 3.
The supporting part 3 is supported by filling a filler 7 such as cement between the threaded part 8 at the lower end of the mounting pin 5 and the nut 9 screwed into the threaded part 8. The entire insulator can be fixed in an upright position by fixing the lower metal fitting 6 to a steel tower arm of a power transmission and distribution line steel tower. Further, reference numeral 10 denotes a cap portion projecting outward from the body portion 1, and its outer ribs 11 are curved inward in a large arc shape toward the support portion 3 as shown in FIG. The tip 12 thereof is directed inward, and the tip diameter D is smaller than the outer diameter D 1 of the inner rib 13 protruding from the lower surface of the cap 10. In the illustrated embodiment, the inner rib 13 has a single layer, but if the inner rib 13 has double or triple layers, the outer diameter D 1 of the outermost inner rib 13 is set as the outer diameter D 1.
shall be taken. Further, the tip diameter D of the outer rib 11 is set to be larger than the outer diameter D 2 of the base metal part 4 of the lower metal fitting 6. In this way, outer rib 1
1 by bending the outer rib 1 inward.
A space 14 shielded from the wind from below is formed on the inner surface of the lower metal fitting 6, and water droplets falling from the tip 12 of the outer rib 11 during rain are absorbed by the lower metal fitting 6.
prevent bridging. Outer rib 11
The tip diameter D is the outer diameter of the base metal part 4 of the lower metal fitting 6.
If the water droplet is equal to or smaller than D2 , the water droplet will fall from the tip 12 of the outer rib 11, and at the moment it heads toward the lower metal fitting 6, a flash path will be formed between the tip 12 of the outer rib 11 and the lower metal fitting 6, which will deteriorate the insulation performance. To avoid this, it is necessary to make the tip diameter D larger than the outer diameter D 2 of the base metal part 4 so that the area immediately below the tip of the outer rib 11 is separated from the base metal part 4. Since water droplets tend to be attracted toward the lower metal fitting 6 by electromagnetic force, it is preferable that the tip diameter D is larger than the outer diameter D 2 of the base metal fitting part 4 by about 20 to 30 mm. As shown in FIG. 2, if a disk-shaped raised part 15 is formed between the upper end of the shade part 10 and the wire attachment part 2, the surface leakage distance will be increased and a salt-resistant insulator with even better characteristics can be obtained. can be obtained. Although the above-mentioned embodiments are all related to tight-top type salt-resistant insulators, it goes without saying that a clamp-top type insulator may be used in which the wire attachment portion is a metal cap and a clamp is attached.
（作用）
このように構成されたものは、下部金具６を送
配電線鉄塔の鉄塔アーム等に固定するとともに胴
部１の上端の電線支持部２に送配電線を支持させ
て使用されるものであることは前述のとおりであ
るが、下部金具６が胴部１を下方へ延長して形成
された絶縁体である支持部３の下端に笠部１０の
開口部から離隔して設けられているうえ、外側リ
ブ１１が内側へ大きくわん曲されて支持部３との
間隙を小さくしているので、電線とベース金具部
４との間で閃絡が生じた場合にもアークが内面に
入りにくくアーク熱による笠部１０の破損が生じ
にくく、また万一笠部１０の破損が生じても胴部
１が中実の太い磁器質により構成されているの
で、胴部１まで破損することはなく、耐アーク特
性を著しく向上させることができる。また、下部
金具６は椀形のベース金具部４によつて磁器質の
支持部３を外側から把持する形式であるので、セ
メント膨脹あるいはベース金具部４の腐食膨脹を
生じても支持部３に圧縮応力を生じさせるのみで
あり、磁器質は圧縮に対して引張に対するより10
倍以上の大きい強度を有するので破壊に至る虞れ
がない。更に、送配電線と下部金具６との間には
中実の磁器質からなる胴部１及び支持部３が介在
するため、雷サージ等による過大電圧を受けても
絶縁破壊の虞れがないうえ、支持部３を絶縁体と
したので表面漏洩距離が増加して汚損特性が更に
向上する。そして外側リブ１１を内側へ大きくわ
ん曲させその先端径Ｄが内側リブ１３の外径D1
より小さくなるようにして外側リブ１１の内面に
下方からの風に対して遮蔽された空間１４を形成
したので、風とともに雨や霧が吹上げられた場合
にも空間１４の内面は乾燥状態に保たれ、雨や霧
の付着による漏洩電流を極めて小さく押えること
ができるとともに汚損物の浸入を防ぐことにより
高い汚損電圧を得ることができる。また、碍子の
表面が汚損して漏洩電流が流れても支持部３を絶
縁体にしているので外側リブ１１の先端部との間
で風雨により電気的に橋絡して閃絡することもな
い。(Function) The device configured as described above is used by fixing the lower metal fitting 6 to the tower arm of a power transmission and distribution line tower, etc., and supporting the power transmission and distribution line by the wire support portion 2 at the upper end of the body 1. As mentioned above, the lower metal fitting 6 is provided at the lower end of the support part 3, which is an insulator formed by extending the body part 1 downward, and is spaced apart from the opening of the cap part 10. Moreover, since the outer rib 11 is largely curved inward to reduce the gap with the support part 3, even if a flash fault occurs between the electric wire and the base metal part 4, arcs will not enter the inner surface. It is difficult for the cap 10 to be damaged due to arc heat, and even if the cap 10 were to be damaged, the body 1 is made of solid and thick porcelain, so the body 1 will not be damaged. Therefore, the arc resistance can be significantly improved. In addition, since the lower metal fitting 6 is of a type in which the bowl-shaped base metal fitting part 4 grips the porcelain support part 3 from the outside, even if cement expansion or corrosion expansion of the base metal fitting part 4 occurs, the support part 3 will not hold. It only produces compressive stress, and porcelain has a 10% higher resistance in compression than in tension.
Since it has more than twice the strength, there is no risk of breakage. Furthermore, since the body part 1 and the support part 3 made of solid porcelain are interposed between the power transmission and distribution line and the lower metal fitting 6, there is no risk of insulation breakdown even if excessive voltage is applied due to lightning surges, etc. Moreover, since the support portion 3 is made of an insulator, the distance of surface leakage is increased and the fouling characteristics are further improved. Then, the outer rib 11 is largely bent inward so that its tip diameter D becomes the outer diameter D 1 of the inner rib 13.
Since the space 14 that is shielded from the wind from below is formed on the inner surface of the outer rib 11 by making it smaller, the inner surface of the space 14 remains dry even when rain or fog is blown up by the wind. It is possible to suppress the leakage current due to the adhesion of rain or fog to an extremely low level, and to obtain a high pollution voltage by preventing the infiltration of pollutants. Furthermore, even if the surface of the insulator is contaminated and a leakage current flows, since the supporting part 3 is made of an insulator, there will be no chance of electrical bridging and flashing between it and the tip of the outer rib 11 due to wind and rain. .
（考案の効果）
本考案は以上の説明からも明らかなように、閃
絡やセメント膨脹あるいは下部金具の腐食膨脹に
よる破壊を生じにくく、また過電圧による絶縁破
壊やアークによる損傷の虞れがないうえに雨、霧
等の浸入による漏洩電流の発生がなく高い汚損耐
電圧を得ることができ、しかも耐塩皿付きのピン
碍子に比較して低コストで取付作業が容易なもの
であるから、従来の耐塩用碍子の欠点を解消した
ものとしてその実用的価値は極めて大である。(Effects of the invention) As is clear from the above explanation, the present invention is unlikely to cause damage due to flash flash, cement expansion, or corrosion expansion of the lower metal fittings, and there is no risk of dielectric breakdown due to overvoltage or damage due to arcing. Since there is no leakage current caused by infiltration of rain, fog, etc., and high contamination withstand voltage can be obtained, the cost is lower and the installation work is easier compared to pin insulators with salt-resistant plates. Its practical value is extremely great as it overcomes the drawbacks of salt-resistant insulators.
第１図は本考案の第１の実施例を示す一部切欠
正面図、第２図は本考案の第２の実施例を示す一
部切欠正面図、第３図は従来の耐塩用碍子を示す
一部切欠正面図である。
１……胴部、２……電線支持部、３……支持
部、４……ベース金具部、５……取付ピン、６…
…下部金具、１１……外側リブ、１３……内側リ
ブ、１４……空間、Ｄ……外側リブの先端径、
D1……内側リブの外径、D2……ベース金具部の
外径。
Fig. 1 is a partially cutaway front view showing the first embodiment of the present invention, Fig. 2 is a partially cutaway front view showing the second embodiment of the present invention, and Fig. 3 shows a conventional salt-resistant insulator. It is a partially cutaway front view shown. DESCRIPTION OF SYMBOLS 1...Body part, 2...Wire support part, 3...Support part, 4...Base metal part, 5...Mounting pin, 6...
...lower metal fitting, 11...outer rib, 13...inner rib, 14...space, D...tip diameter of outer rib,
D 1 ...Outer diameter of the inner rib, D 2 ...Outer diameter of the base metal part.
Claims (1)
１１と内側リブ１３とよりなり、その開口部を下
向きにした笠部１０を形成するとともに外側リブ
１１を内側へ向けて大きくわん曲させて内側リブ
１３を覆いその先端径Ｄを内側リブ１３の外径
D1より小さくして外側リブ１１と内側リブ１３
との間に空間１４を形成してなる耐塩用碍子にお
いて、前記胴部１には下方に延長して笠部１０よ
り突出する絶縁体である中実の支持部３を一体形
成し、該支持部３の下端にはその外側を把持する
椀形のベース金具部４を備えた下部金具６を前記
笠部１０の開口部から離隔して取付けるとともに
前記外側リブ１１の先端径Ｄはベース金具部４の
外径D2より大きくして外側リブ１１の先端の直
下域をベース金具部４から離隔したことを特徴と
する耐塩用碍子。 A body part 1 having a wire support part 2 at the upper end is made up of outer ribs 11 and inner ribs 13, forming a cap part 10 with its opening facing downward, and the outer ribs 11 are largely curved inward. cover the inner rib 13 and make its tip diameter D the outer diameter of the inner rib 13.
D smaller than 1 and outer rib 11 and inner rib 13
In the salt-resistant insulator, a solid support part 3, which is an insulator, is integrally formed on the body part 1 and extends downwardly and protrudes from the cap part 10. A lower metal fitting 6 having a bowl-shaped base metal part 4 for gripping the outer side of the part 3 is attached to the lower end of the part 3 at a distance from the opening of the cap part 10, and the tip diameter D of the outer rib 11 is set to the base metal fitting part. A salt-resistant insulator characterized in that the outer diameter D2 of the outer rib 11 is larger than that of the base metal part 4, and the area immediately below the tip of the outer rib 11 is separated from the base metal part 4.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985015496U JPH037845Y2 (en) | 1985-02-06 | 1985-02-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1985015496U JPH037845Y2 (en) | 1985-02-06 | 1985-02-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61132626U JPS61132626U (en) | 1986-08-19 |
| JPH037845Y2 true JPH037845Y2 (en) | 1991-02-27 |
Family
ID=30501391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1985015496U Expired JPH037845Y2 (en) | 1985-02-06 | 1985-02-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH037845Y2 (en) |
-
1985
- 1985-02-06 JP JP1985015496U patent/JPH037845Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61132626U (en) | 1986-08-19 |
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