JP3857895B2 - Lightning arrestor - Google Patents
Lightning arrestor Download PDFInfo
- Publication number
- JP3857895B2 JP3857895B2 JP2001266736A JP2001266736A JP3857895B2 JP 3857895 B2 JP3857895 B2 JP 3857895B2 JP 2001266736 A JP2001266736 A JP 2001266736A JP 2001266736 A JP2001266736 A JP 2001266736A JP 3857895 B2 JP3857895 B2 JP 3857895B2
- Authority
- JP
- Japan
- Prior art keywords
- lightning arrester
- lightning
- arrester
- elastic material
- groove
- 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 - Fee Related
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- Thermistors And Varistors (AREA)
- Emergency Protection Circuit Devices (AREA)
- Insulators (AREA)
Description
【０００１】
【発明の属する技術分野】
本発明は架空送電線等に設置され、架空送電線を落雷より保護し、送電線の雷害を低減させる避雷装置に関し、特に、曲げ荷重によって避雷素子が破壊するのを防止した避雷器の構造に関するものである。
【０００２】
【従来の技術】
両端の端末金具同士を複数本の絶縁棒で連結し、端末金具間に避雷素子を段積みし、避雷素子と絶縁棒の周りに直接シリコーン樹脂等をモールドした避雷装置が知られている。
図２に上記避雷装置の断面構成例を示す。
図２において、１はＦＲＰ等の絶縁棒、２ａ，２ｂは端末金具である。端末金具２ａ，２ｂには、絶縁棒１の両端が圧着等により強固に固着されている。
【０００３】
絶縁棒１を介して連結された端末金具２ａ，２ｂの間には、複数個の酸化亜鉛素子等からなる避雷素子３とスプリング４が設けられており、スプリング４により避雷素子３を押圧し、避雷素子同士を密着させている。
上記絶縁棒１、端末金具２ａ，２ｂ、避雷素子３から構成される組み立て体は、図２に示すように端末金具２ａ，２ｂの一部を残してモールド材５により一体モールドされる。
【０００４】
【発明が解決しようとする課題】
上記構造の避雷器においては、外周がシリコーンゴム樹脂等のモールド材でモールドされているため、避雷器の片側に曲げ荷重が加わったとき変形し、もう一方の端末部では避雷素子がその縁を支点として曲げ荷重の方向に回転する。
そのとき、図３に示すように、避雷素子３と端末金具２ｂとは点接触となり、避雷素子の支点となったＡ部分には、過大な圧縮力が加わることになり、避雷素子３の破壊が生じる。
本発明は上記課題を解決するためになされたものであって、本発明の目的は、避雷器の片側に曲げ荷重が加わったときの避雷素子の支点部分に生じる荷重を緩和し、避雷素子が破壊するのを防止することである。
【０００５】
【課題を解決するための手段】
上記課題を解決するため、本発明においては、避雷素子と接触する端末金具の面に、素子よりも一回り大きい外周と一回り小さい内周を持った溝を設けて、その溝に弾性材を充填する。
本発明においては、上記のように構成したので、避雷器の片側に曲げ荷重が加わったとき、避雷素子の支点となる部分が、端末金具と直接接触せず、弾性材を介して接触するので、避雷素子に生じる荷重が緩和することができ、避雷素子の破壊を防止することができる。
【０００６】
【発明の実施の形態】
図１（ａ）は本発明の実施例の避雷装置の断面構成を示す図、図１（ｂ）は図１（ａ）のＡ部の拡大図である。
図１において、１はＦＲＰ製の絶縁棒、２ａ，２ｂは端末金具であり、前記したように、端末金具２ａ，２ｂに絶縁棒１の両端が圧着等により固着されている。端末金具２ａ，２ｂの間には、複数個の避雷素子３とスプリング４が設けられており、スプリング４により避雷素子３同士を密着させている。
上記避雷素子と接触する端末金具２ｂの面には、 避雷素子３より一回り大きい外周と一回り小さい内周を持った溝６が設けられ、該溝６にはゴム等の弾性材７が充填されている。また、上記避雷素子３と端末金具２ａ，２ｂが接する面積は、電気的性能が確保されるに十分なだけの大きさにされている。
上記のように構成された避雷素子３と絶縁棒１の周りには、シリコンゴム等のモールド材５が一体にモールドされる。
本実施例の避雷器は、上記構成であるので、避雷器の片側に曲げ荷重が加わり、図３に示したように避雷素子３がその縁部を支点として曲げ荷重の方向に回転しても、避雷素子３の角部が上記弾性材７に接し、避雷素子３の縁部に生じる荷重が緩和され、避雷素子が破壊されるのを防止することができる。
【０００７】
【発明の効果】
以上説明したように、本発明においては、避雷素子と接触する端末金具の面に、 避雷素子より一回り大きい外周と一回り小さい内周を持った溝を設け、その溝に弾性材を充填したので、避雷器に曲げ荷重が加わり避雷素子がその縁部を支点として回転しようとしても、その支点部分が弾性材のゴムと接するので、避雷素子の支点部分に生じる荷重が緩和され、素子が破壊するのを防止することができる。
【図面の簡単な説明】
【図１】本発明の実施例の避雷器の構成を示す図である。
【図２】従来の避雷器の一例を示す図である。
【図３】避雷器に曲げ荷重が加わったときの様子を示す図である。
【符号の説明】
１ 絶縁棒
２ａ，２ｂ 端末金具
３ 酸化亜鉛素子
４ スプリング
５ モールド材
６ 溝
７ 弾性材[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a lightning arrester that is installed in an overhead power transmission line or the like, protects the overhead power transmission line from lightning strikes, and reduces lightning damage to the power transmission line, and particularly relates to a structure of a lightning arrester that prevents a lightning arrester from being destroyed by a bending load. Is.
[0002]
[Prior art]
A lightning arrester is known in which terminal fittings at both ends are connected by a plurality of insulating rods, lightning protection elements are stacked between the terminal fittings, and a silicone resin or the like is directly molded around the lightning arresting elements and the insulation rods.
FIG. 2 shows a cross-sectional configuration example of the lightning arrester.
In FIG. 2, 1 is an insulating rod such as FRP, and 2a and 2b are terminal fittings. Both ends of the insulating rod 1 are firmly fixed to the terminal fittings 2a and 2b by crimping or the like.
[0003]
Between the terminal fittings 2a and 2b connected via the insulating rod 1, a lightning protection element 3 and a spring 4 made of a plurality of zinc oxide elements and the like are provided, and the lightning protection element 3 is pressed by the spring 4, Lightning protection elements are in close contact with each other.
The assembly composed of the insulating rod 1, the terminal fittings 2a and 2b, and the lightning protection element 3 is integrally molded with the molding material 5 leaving a part of the terminal fittings 2a and 2b as shown in FIG.
[0004]
[Problems to be solved by the invention]
In the lightning arrester having the above structure, since the outer periphery is molded with a molding material such as silicone rubber resin, the lightning arrester is deformed when a bending load is applied to one side of the lightning arrester, and the lightning arrester at the other end has the edge as a fulcrum. Rotates in the direction of the bending load.
At that time, as shown in FIG. 3, the lightning protection element 3 and the terminal fitting 2 b are in point contact, and an excessive compressive force is applied to the portion A which is a fulcrum of the lightning protection element, and the lightning protection element 3 is destroyed. Occurs.
The present invention has been made to solve the above problems, and the object of the present invention is to relieve a load generated at a fulcrum portion of a lightning arrester when a bending load is applied to one side of the lightning arrester, and the lightning arrester breaks down. Is to prevent it.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, in the present invention, a groove having an outer circumference that is one size larger than the element and an inner circumference that is one size smaller than the element is provided on the surface of the terminal metal fitting that contacts the lightning arrester, and an elastic material is provided in the groove. Fill.
In the present invention, because it is configured as described above, when a bending load is applied to one side of the lightning arrester, the portion serving as the fulcrum of the lightning arrester is not in direct contact with the terminal fitting, but is contacted through the elastic material, The load generated in the lightning arrester can be relaxed, and the destruction of the lightning arrester can be prevented.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1A is a diagram showing a cross-sectional configuration of a lightning arrester according to an embodiment of the present invention, and FIG. 1B is an enlarged view of a portion A in FIG.
In FIG. 1, reference numeral 1 denotes an insulating rod made of FRP, and 2a and 2b denote terminal fittings. As described above, both ends of the insulating rod 1 are fixed to the terminal fittings 2a and 2b by crimping or the like. A plurality of lightning protection elements 3 and springs 4 are provided between the terminal fittings 2 a and 2 b, and the lightning protection elements 3 are brought into close contact with each other by the springs 4.
A groove 6 having an outer circumference that is slightly larger than the lightning arrester 3 and an inner circumference that is slightly smaller than the lightning arrester 3 is provided on the surface of the end fitting 2b that contacts the lightning arrester, and the groove 6 is filled with an elastic material 7 such as rubber. Has been. The area where the lightning protection element 3 and the terminal fittings 2a and 2b are in contact is made large enough to ensure electrical performance.
A molding material 5 such as silicon rubber is integrally molded around the lightning protection element 3 and the insulating rod 1 configured as described above.
Since the lightning arrester of the present embodiment has the above-described configuration, even if a bending load is applied to one side of the lightning arrester and the lightning arrester 3 rotates in the direction of the bending load with its edge as a fulcrum as shown in FIG. The corners of the element 3 are in contact with the elastic material 7, and the load generated at the edge of the lightning protection element 3 is relaxed, and the lightning protection element can be prevented from being destroyed.
[0007]
【The invention's effect】
As described above, in the present invention, a groove having an outer circumference that is one size larger than that of the lightning arrester and an inner circumference that is slightly smaller than that of the lightning arrester is provided on the surface of the end fitting, and the groove is filled with an elastic material. Therefore, even if a bending load is applied to the lightning arrester and the lightning arrester tries to rotate with its edge as a fulcrum, the fulcrum part is in contact with the rubber of the elastic material, so the load generated at the fulcrum part of the lightning arrester is relaxed and the element breaks down Can be prevented.
[Brief description of the drawings]
FIG. 1 is a diagram showing a configuration of a lightning arrester according to an embodiment of the present invention.
FIG. 2 is a diagram showing an example of a conventional lightning arrester.
FIG. 3 is a diagram showing a state when a bending load is applied to the lightning arrester.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Insulating rod 2a, 2b Terminal metal fitting 3 Zinc oxide element 4 Spring 5 Mold material 6 Groove 7 Elastic material
Claims (1)
上記避雷素子と接触する端末金具の面に、 避雷素子より一回り大きい外周と一回り小さい内周を持った溝を設け、その溝に弾性材を充填し、避雷器に曲げ荷重が加わったとき避雷素子の角部を上記弾性材に接触させ、避雷素子の縁部に生じる荷重を緩和するようにした
ことを特徴とする避雷器。 A lightning arrester that is deformable when a bending load is applied to the lightning arrester, in which the end fittings at both ends are connected with multiple insulation rods, lightning protection elements are stacked on the terminal fittings, and the lightning arrester and rubber are directly molded around the lightning arresters. There,
When a groove with an outer circumference that is one size larger than the lightning arrester and one inner circumference that is slightly smaller than the lightning arrester is provided on the surface of the terminal fitting that contacts the lightning arrester, the groove is filled with an elastic material, and when a bending load is applied to the lightning arrester, A lightning arrester characterized in that a corner portion of an element is brought into contact with the elastic material to relieve a load generated at an edge portion of the lightning arrester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001266736A JP3857895B2 (en) | 2001-09-04 | 2001-09-04 | Lightning arrestor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001266736A JP3857895B2 (en) | 2001-09-04 | 2001-09-04 | Lightning arrestor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2003077710A JP2003077710A (en) | 2003-03-14 |
| JP3857895B2 true JP3857895B2 (en) | 2006-12-13 |
Family
ID=19092975
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001266736A Expired - Fee Related JP3857895B2 (en) | 2001-09-04 | 2001-09-04 | Lightning arrestor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3857895B2 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100766438B1 (en) * | 2006-03-07 | 2007-10-12 | 엘지전자 주식회사 | A suction head for a wet duster cleaner |
| JP5264648B2 (en) * | 2008-09-03 | 2013-08-14 | 株式会社サンエス | Body air conditioner using Peltier element |
| CN103023006A (en) * | 2012-11-30 | 2013-04-03 | 江苏澳能电力电缆附件有限公司 | Overvoltage protection device |
| CN102938278B (en) * | 2012-12-05 | 2015-12-02 | 上海市电力公司 | A kind of anti-thunder insulator for 10KV insulated conductor |
-
2001
- 2001-09-04 JP JP2001266736A patent/JP3857895B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JP2003077710A (en) | 2003-03-14 |
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