JPS60194501A - Arrester - Google Patents
ArresterInfo
- Publication number
- JPS60194501A JPS60194501A JP4909684A JP4909684A JPS60194501A JP S60194501 A JPS60194501 A JP S60194501A JP 4909684 A JP4909684 A JP 4909684A JP 4909684 A JP4909684 A JP 4909684A JP S60194501 A JPS60194501 A JP S60194501A
- Authority
- JP
- Japan
- Prior art keywords
- insulating tube
- zinc oxide
- tube
- pressure relief
- 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
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)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の利用分野〕
本発明は電力用避雷器、とくに碍子用で防爆構造の避雷
器の冷却特性の改善に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Application of the Invention] The present invention relates to an improvement in the cooling characteristics of a power surge arrester, particularly an explosion-proof surge arrester for insulators.
最近、酸化亜鉛素子を用いたギャップ・レス避雷器が電
力系統に盛んに採用されるようになった。Recently, gapless lightning arresters using zinc oxide elements have been widely used in power systems.
この型０避雷器は、常時、微少電流が流れているため、
羨る程度酸化亜鉛素子の温度上昇があり、さらに、雷サ
ージの侵入、または、遮断器の開閉操作に伴う過電圧の
印加によって、一時的に、さらに、素子の温度が高まる
。This type 0 lightning arrester has a small current flowing through it all the time, so
The temperature of the zinc oxide element increases to an enviable degree, and furthermore, the temperature of the element temporarily increases due to the intrusion of lightning surge or the application of overvoltage accompanying the opening/closing operation of the circuit breaker.
一般に 素子の温度上昇はその寿命に悪影響を与えるの
で、素子のまわりの絶縁気体を自然循環させたり、（実
開５５−１６４８０２） 、冷媒を封入したヒートパー
ｒプの採用（実開５６−３１１１４０３ ）等が従来か
ら提案されている。とくに、碍子形避雷器の内部に絶縁
筒を挿入して防爆構造としたものでは、放熱かが少ない
ため、防爆と冷却を両立させた経済的で信頼性の晶い避
雷器の提案がのぞまれていた。In general, an increase in the temperature of an element has a negative effect on its lifespan, so it is recommended to naturally circulate an insulating gas around the element (Utility Model Publication No. 55-164802), or use a heat purp containing a refrigerant (Utility Model Application No. 56-3111403). etc. have been proposed in the past. In particular, insulator-type surge arresters with an explosion-proof structure by inserting an insulating tube inside them emit less heat, so there is a need for proposals for economical and reliable lightning arresters that are both explosion-proof and cooling. Ta.
本発明の目的は、防爆構造の碍子形避雷器の冷却特性の
改善にある。An object of the present invention is to improve the cooling characteristics of an explosion-proof insulator type lightning arrester.
本発明の要点は。 The main points of the invention are as follows.
（１）酸化亜鉛素子を、簡単な構造で冷却するために、
素子の周囲の絶縁ガスの対流を良好にする。(1) To cool the zinc oxide element with a simple structure,
Improve the convection of insulating gas around the element.
（２） ＠環している高温の絶縁ガスを冷却するため、
そのガスと熱の良導体（例えば金属）の接触面積を大き
くする。(2) @To cool the high-temperature insulating gas that circulates,
Increase the contact area between the gas and a good conductor of heat (for example, metal).
（３）熱の良導体（冷却板）に吸収された熱が低温部に
むけて効率よく移動するように、冷却板の厚さｔｌを大
きくする。(3) The thickness tl of the cooling plate is increased so that the heat absorbed by the good thermal conductor (cooling plate) efficiently moves toward the low temperature part.
（４）一方、防爆の観点から、万一、素子の破壊を生じ
、短絡電流のアークエネルギにより碍管内部の圧力が異
常に上昇した場合、できるだけ低い圧力で放圧するよう
、放圧板の厚みｔｌを小とする。(4) On the other hand, from an explosion-proof perspective, in the event that the element is destroyed and the pressure inside the insulator tube rises abnormally due to the arc energy of the short-circuit current, the thickness tl of the pressure relief plate should be adjusted so that the pressure is released at the lowest possible pressure. Make it small.
ことにある。There is a particular thing.
本発明の一実施例を第１図に示す。酸化亜鉛素子１を支
持する絶縁ロッド２の下端部は、ベース３に固定され、
絶縁ロッド２の上端部にはバネ座を兼ねるネジ４と、ワ
ッシャ５．スプリング・ワッシャ６及びナツト７により
固定される。An embodiment of the present invention is shown in FIG. The lower end of the insulating rod 2 supporting the zinc oxide element 1 is fixed to the base 3,
At the upper end of the insulating rod 2, there is a screw 4 which also serves as a spring seat, and a washer 5. It is fixed by a spring washer 6 and a nut 7.
上部金具８の、はぼ中央部には小孔９があって、絶縁ロ
ッド２の上部を図示のように支えている。There is a small hole 9 in the center of the upper metal fitting 8, which supports the upper part of the insulating rod 2 as shown.
内部を保護し、全体を支持する碍管１０．碍管保護用の
絶縁筒１１が図示のように配置される。Insulator tube 10 that protects the inside and supports the whole. An insulating tube 11 for protecting the insulator tube is arranged as shown.
ベース３の下及び上部金具８の上には、それぞれ、放圧
板を兼ねた冷却板１２．１３があり、さらに、その外側
には放圧口１４，１５をもつ放出金具１６及び１７があ
る。Below the base 3 and above the upper fitting 8, there are cooling plates 12, 13 which also serve as pressure relief plates, and furthermore, on the outside thereof, there are discharge fittings 16 and 17 having pressure relief ports 14, 15.
酸化亜鉛素子１への電流は、上部金具８から、スプリン
グ１８−ワッシャ５−ネジ４−スプリング１９−ワッシ
ャ２〇−酸化亜鉛素子１−ワッシャ２１−ナツト２２−
スプリング・ワッシャ２３−ベース３の経路で流れる。The current to the zinc oxide element 1 is passed from the upper metal fitting 8 to the spring 18 - washer 5 - screw 4 - spring 19 - washer 20 - zinc oxide element 1 - washer 21 - nut 22 -
It flows through the spring washer 23-base 3 path.
（実際には、スプリング１８．１９と並列にフレキシブ
ル導体を使用するが、図示省略）。(Actually, flexible conductors are used in parallel with the springs 18 and 19, but are not shown).
酸化亜鉛素子１がエネルギを吸収して温度上昇すると、
そのまわりの気体の温度も上昇し、上部金具８及びベー
ス３に設けた小孔を通して、実線矢印で示すような対流
が生じる。When the zinc oxide element 1 absorbs energy and its temperature rises,
The temperature of the gas around it also rises, and convection occurs through the small holes provided in the upper metal fitting 8 and the base 3, as shown by the solid arrows.
この場合、冷却板１２．１３には、次の二つの重要な機
能が要求される。In this case, the following two important functions are required of the cooling plates 12,13.
（１）酸化亜鉛素子の熱的破壊等により、内部圧力が、
一定値以上に上昇した時、確実に破損して、三点鎖線の
ように高温、高圧ガスを放出し、積極的に、碍管外部で
内緒を発生させ、碍管の爆発を防止すること。(1) Due to thermal destruction of the zinc oxide element, the internal pressure
When the temperature rises above a certain level, it will surely break and release high temperature, high pressure gas as shown by the three-dot chain line, actively generating a secret outside the insulator tube to prevent the insulator from exploding.
（２）内部圧力が一定値以下の場合には、実線矢印のよ
うに循環する高温ガスの熱を能率よく吸収し上部金具８
及びベース３に伝え、放出金具１６．１７にも熱を伝え
て、効率よく大気中へ放熱すること。(2) When the internal pressure is below a certain value, the upper metal fitting 8 efficiently absorbs the heat of the circulating high-temperature gas as shown by the solid line arrow.
To efficiently radiate heat into the atmosphere by transmitting heat to the base 3 and also to the discharging fittings 16 and 17.
そのため、冷却板１２．１３は、例えば、第２図に示す
ように、熱の伝導が十分である厚みをもち、比較的低い
圧力上昇でも確実に、十分な放圧面積が開口するよう厚
さの一部に適当な形に切り込みをつけている。Therefore, as shown in FIG. 2, the cooling plates 12 and 13 have a thickness that is sufficient for heat conduction, and a thickness that ensures that a sufficient pressure relief area is opened even with a relatively low pressure increase. A notch is made in a suitable shape in a part of it.
このように構成することにより、簡単な構造で防爆構造
の避雷器の温度上昇を比較的低い値に保つことができる
。With this configuration, the temperature rise of the explosion-proof lightning arrester can be kept at a relatively low value with a simple structure.
第３図は、放圧板に対して異なる形に、板の厚さｔの途
中まで切り込みをつけた例を示す。この切り込みの形が
角ぼっているので、碍管内部が圧力上昇した場合、この
角の部分から破損し、防爆の効果があがると云う効果が
ある。FIG. 3 shows an example in which cuts are made in a different shape to the middle of the thickness t of the pressure relief plate. Since the shape of this notch is square, if the pressure inside the insulator tube increases, it will break at the corner, thereby increasing the explosion-proof effect.
本発明によれば、放熱板と放圧板とを兼用し、簡単な構
造で、防爆構造避雷器の冷却特性を改善できる。According to the present invention, it is possible to improve the cooling characteristics of an explosion-proof lightning arrester with a simple structure that serves both as a heat sink and a pressure relief plate.
３図は冷却板の具体的−例を示す図である。FIG. 3 is a diagram showing a specific example of a cooling plate.
１・・・酸化亜鉛素子、１ｏ・・・碍管、１１・・・絶
縁筒、１６．１７・・・放出金具。DESCRIPTION OF SYMBOLS 1...Zinc oxide element, 1o...Insulator tube, 11...Insulating tube, 16.17...Discharge fitting.
第１頁の続き
０発 明 者 赤 津 芳
日立市幸町３丁目１番１号 株式会社日立製作所日立研
究所内Continued from page 1 0 Inventor Yoshi Akatsu 3-1-1 Saiwaimachi, Hitachi City Hitachi Research Laboratory, Hitachi, Ltd.
Claims (1)
た酸化亜鉛素子、前記酸化亜鉛素子と前記絶縁筒の間の
空間、前記絶縁筒と前記碍管との間の空間との間で、前
記酸化亜鉛素子のまわりの絶縁ガスが前記碍管の両端面
に設けた金具の小孔を通して循環可能なように構成し、
前記碍管金具の外側に、板の厚さの途中まで適当な形状
に切りこみをつけた放圧板を設け、この放圧板のさらに
外側に放圧ガスを前記碍管の外部沿面にそって放出可能
にした金具を設けたことを特徴とする避雷器。1. An insulating tube provided inside the insulating tube, a zinc oxide element provided inside the insulating tube, a space between the zinc oxide element and the insulating tube, and a space between the insulating tube and the insulating tube. , configured so that insulating gas around the zinc oxide element can circulate through small holes in metal fittings provided on both end faces of the insulator tube,
A pressure relief plate having an appropriate shape notched halfway through the thickness of the plate is provided on the outside of the insulator pipe metal fitting, and the pressure relief gas can be released further outside the pressure relief plate along the external surface of the insulator tube. A lightning arrester characterized by being equipped with metal fittings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4909684A JPS60194501A (en) | 1984-03-16 | 1984-03-16 | Arrester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4909684A JPS60194501A (en) | 1984-03-16 | 1984-03-16 | Arrester |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS60194501A true JPS60194501A (en) | 1985-10-03 |
Family
ID=12821560
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4909684A Pending JPS60194501A (en) | 1984-03-16 | 1984-03-16 | Arrester |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60194501A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6315002U (en) * | 1986-07-12 | 1988-02-01 | ||
| JPH026273U (en) * | 1988-06-28 | 1990-01-16 | ||
| JP2008306136A (en) * | 2007-06-11 | 2008-12-18 | Mitsubishi Electric Corp | Tank-shaped lightning arrester |
-
1984
- 1984-03-16 JP JP4909684A patent/JPS60194501A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6315002U (en) * | 1986-07-12 | 1988-02-01 | ||
| JPH0546244Y2 (en) * | 1986-07-12 | 1993-12-03 | ||
| JPH026273U (en) * | 1988-06-28 | 1990-01-16 | ||
| JP2008306136A (en) * | 2007-06-11 | 2008-12-18 | Mitsubishi Electric Corp | Tank-shaped lightning arrester |
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