JPH0453205A - Lightning arrester - Google Patents

Lightning arrester

Info

Publication number
JPH0453205A
JPH0453205A JP16126290A JP16126290A JPH0453205A JP H0453205 A JPH0453205 A JP H0453205A JP 16126290 A JP16126290 A JP 16126290A JP 16126290 A JP16126290 A JP 16126290A JP H0453205 A JPH0453205 A JP H0453205A
Authority
JP
Japan
Prior art keywords
lightning arrester
tube
unit
insulating
insulating tube
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.)
Granted
Application number
JP16126290A
Other languages
Japanese (ja)
Other versions
JP2601936B2 (en
Inventor
Yoshihide Kayano
好秀 茅野
Yoshihiro Ishizaki
石崎 義弘
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toshiba Corp filed Critical Toshiba Corp
Priority to JP2161262A priority Critical patent/JP2601936B2/en
Publication of JPH0453205A publication Critical patent/JPH0453205A/en
Application granted granted Critical
Publication of JP2601936B2 publication Critical patent/JP2601936B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

PURPOSE:To prevent intrusion of an external current into a lightning arrester by a method wherein the outer surface of the connected part of the laminated lightning arrester unit is coated with an insulating material having a heat shrinking property. CONSTITUTION:An insulating tube 11, which is a heat shrinkable insulating member to be used for coating, is attached to the outside of the connected part metal flanges 5b and 6a of an upper unit 1 and a lower unit 2. The circumference of the metal flanges 5b and 6a and the cementing part 8 and the connected part of a connection bolt 7 and the metal flange are coated with rubber- like putty 12 so as to obtain the junction part of the body of a porcelain tube in a streamline shape. Also, the insulating tube 11 has excellent tracking- resisting property and erosion-resisting property, the water-repellent material such as silicone rubber, EPR and the like, for example, is used on the surface of the insulating tube 11, and the inside surface of which is coated with a liquid rubber sealing material. Besides, the heat-shrinkable insulating tube 11 shrinks in radial direction when it is heated up for a specific period at the prescribed temperature, and it is closely fixed to the surface of the body part 13 of the porcelain tube and the metal flanges 5 and 6.

Description

【発明の詳細な説明】 「発明の目的」 (産業−にの利用分野) 本発明は、複数個の避雷器単位を段積みにした避雷器に
係り、特に、その碍管表面を流れる電流と避雷器の内部
を流れる電流の分離を図った避雷器に関するものである
Detailed Description of the Invention Object of the Invention (Industrial Field of Application) The present invention relates to a surge arrester in which a plurality of surge arrester units are stacked, and particularly relates to a current flowing on the surface of the insulator tube and a surge arrester inside the surge arrester. This relates to a lightning arrester that separates the current flowing through it.

(従来の技術) 一般に、避雷器は、酸化亜鉛等から成る非直線抵抗体を
碍管内に積層して収納し、碍管の両端に設けられた金属
製フランジと接触させて密封することによって、−避雷
器単位が構成されている。
(Prior Art) In general, lightning arresters are constructed by stacking and storing non-linear resistors made of zinc oxide or the like in an insulator tube, and sealing them by contacting metal flanges provided at both ends of the insulator tube. Units are configured.

そして、所定の定格電圧を得るために、また、汚損度に
応じて、碍管を長くしたり、内部に配設される非直線抵
抗体の積層数を増減し、あるいは、前記避雷器単位を複
数個段積みして避雷器が構成されている。
In order to obtain a predetermined rated voltage, depending on the degree of contamination, the length of the insulator tube may be lengthened, the number of layers of non-linear resistors disposed inside may be increased or decreased, or the number of lightning arrester units may be increased or decreased. They are stacked to form a lightning arrester.

第3図に従来から用いられている段積み避雷器の一例を
示した。即ち、上段単位1.及び下段単位2の2つの避
雷器単位から避雷器10が構成されている。これら各避
雷器単位は、磁器製の碍管3内に収納された内部要素4
と、i’/管3の1−下端部に配設されたに1部金属製
フランジ5、下部金属製フランジ6とから構成されてい
る。そして、この避雷器単位を上下に積層することによ
って、上下碍管3a、3bは金属製フランジ5,6を介
して内部要素4a、、4bと電気的に接続されている。
Figure 3 shows an example of a conventionally used stacked lightning arrester. That is, upper unit 1. A lightning arrester 10 is composed of two lightning arrester units: a lower unit 2 and a lower unit 2. Each of these arrester units has an internal element 4 housed within a porcelain insulator tube 3.
It consists of a partial metal flange 5 and a lower metal flange 6 disposed at the lower end of the i'/pipe 3. By stacking these lightning arrester units vertically, the upper and lower insulator tubes 3a, 3b are electrically connected to the internal elements 4a, 4b via metal flanges 5, 6.

なお、各避雷器単位を積層した際に、上段単位1の下端
部に設けられた下部金属製フランジ6aと、下段単位2
の」二端部に設けられた−1一部金属製フランジ5bと
が、接続ボルト7によって締めイζ1け固定されている
。また、前記金属製フランジ5,6と碍管3の胴部との
間には、両者間の気密性を保持するために、セメンチン
グ8が施されている。
Note that when the lightning arrester units are stacked, the lower metal flange 6a provided at the lower end of the upper unit 1 and the lower unit 2
A partially metal flange 5b provided at the two ends of is fixed by a connecting bolt 7. Furthermore, cementing 8 is applied between the metal flanges 5, 6 and the body of the insulator tube 3 in order to maintain airtightness between the two.

(発明が解決しようとする課題) ところで、この様に構成された従来の段積み避雷器に流
れる電流には、内部要素4に流れる電流(以下、内部電
流ieと称す)と、碍管3の表面を流れる電流(以下、
外部電流isと称す)とがある。そして、碍管表面が汚
損されていない場合や好天時には、碍管の表面抵抗が高
いため、外部電流isはほとんど流れず、内部電流ie
が流れている。一方、碍管の表面が塵埃や塩分で汚損さ
れた状態で、降雨や洗浄等によって碍管が濡れると、外
部電流isが流れる。すると、積層された各避雷器単位
の接続部である金属製フランジ5゜6の部分で、内部電
流ieと外部電流isとが合流し、外部電流isの大き
さに応じて、上段単位1または下段単位2の電圧分担が
乱れ、各内部要素4に過大な電流が流れることになる。
(Problem to be Solved by the Invention) By the way, the current flowing through the conventional stacked lightning arrester configured in this way includes a current flowing through the internal element 4 (hereinafter referred to as internal current ie) and a current flowing through the surface of the insulator tube 3. The flowing current (hereinafter referred to as
There is an external current (referred to as an external current is). When the surface of the insulator tube is not contaminated or when the weather is good, the surface resistance of the insulator tube is high, so almost no external current is flows, and the internal current ie
is flowing. On the other hand, when the surface of the porcelain tube is contaminated with dust or salt and the porcelain tube gets wet due to rain, washing, etc., an external current is flows. Then, the internal current ie and the external current is merge at the metal flange 5゜6 which is the connecting part of each stacked lightning arrester unit, and depending on the magnitude of the external current is, the upper unit 1 or the lower unit The voltage sharing of the unit 2 will be disrupted, and an excessive current will flow through each internal element 4.

例えば、−に段単位]の碍管3aの表面にアークが発生
している場合には、上段単位]の碍管表面に流れる列部
電流is1が大きくなる。その結果、−1−段単位1、
の分担電圧は小さくなり、下段中位2の分担電圧が大き
くなる。この時、111単位1の外部電流is、が、各
避雷器単位の接続部である金属製フランジ5a、、5b
の部分で、第3図に示した様に、下段単位2の内部電流
ie、と4部電流is2に分流する。しかし、この場合
、下段単位2の碍管3bの表面の汚損度が少なく、表面
抵抗が大きい場合には、上段単位1の外部電流is1は
下段の内部電流ie2の方に流れる。その結果、下段単
位2の内部要素4bを構成する非直線抵抗体が過熱し、
熱破壊を起こす危険性が高か−〕だ。この様に、複数個
の避雷器単位を段積みにして避雷器を構成すると、その
接続部において外部電流が内部に侵入するといった欠点
があった。
For example, when an arc is generated on the surface of the insulator tube 3a in the - tier unit, the row portion current is1 flowing on the surface of the insulator tube in the upper tier unit increases. As a result, -1-stage unit 1,
The shared voltage of 2 becomes smaller, and the shared voltage of lower intermediate 2 becomes larger. At this time, an external current is of 111 units is applied to the metal flanges 5a, 5b which are the connection parts of each lightning arrester unit.
As shown in FIG. 3, the current is divided into the internal current ie of the lower unit 2 and the fourth unit current is2. However, in this case, if the surface of the insulator tube 3b of the lower unit 2 is less contaminated and the surface resistance is large, the external current is1 of the upper unit 1 flows toward the internal current ie2 of the lower unit. As a result, the non-linear resistor forming the internal element 4b of the lower unit 2 overheats.
There is a high risk of thermal damage. When a lightning arrester is constructed by stacking a plurality of lightning arrester units in this manner, there is a drawback that external current intrudes into the interior at the connecting portion.

この様な欠点を解消するために、碍管を一本化して構成
することが考えられるが、碍管が長尺となるため、−度
焼成した碍管同志を精度良く加工し、釉薬によって再度
焼成して接合しなければならず、製造工程が非常に複雑
なものとなり、製造に長時間を要し、また、コストが大
幅に上昇するといった欠点があった。
In order to overcome these drawbacks, it is possible to configure the insulator tubes into a single piece, but since the insulator tubes are long, the insulator tubes are fired together, processed with high precision, and fired again with glaze. This requires bonding, which makes the manufacturing process very complicated, takes a long time, and significantly increases costs.

本発明は、以」二の欠点を解消するために提案されたも
ので、その目的は、碍管表面を流れる外部電流が避雷器
の内部に侵入することを防止した、信頼性の高い避雷器
を提供することにある。
The present invention was proposed in order to eliminate the following two drawbacks, and its purpose is to provide a highly reliable lightning arrester that prevents external current flowing through the surface of the insulator from intruding into the interior of the surge arrester. There is a particular thing.

[発明の構成] (課題を解決するだめの手段) 本発明は、磁器製の碍管内部に内部要素を収納し、また
、碍管の両端に金属製フランジを設けて密封することに
よって避雷器単位を構成し、この避雷器単位を複数個積
層して成る避雷器において、前記積層された避雷器単位
の接続部の外表面を、熱収縮性を有する絶縁部祠で被覆
したことを特徴とするものである。
[Structure of the Invention] (Means for Solving the Problems) The present invention constitutes a lightning arrester unit by housing internal elements inside a porcelain insulator tube, and by providing metal flanges at both ends of the insulator tube for sealing. In this lightning arrester formed by stacking a plurality of lightning arrester units, the outer surface of the connecting portion of the stacked lightning arrester units is covered with an insulating layer having heat shrinkability.

(作用) 本発明の避雷器によれば、積層した避雷器単位の各接続
部の外側を絶縁部祠で被覆したので、接続部である金属
製フランジと碍管外表面とを完全に絶縁することができ
、碍管表面を流れる外部電流が内部に流入することを防
止できる。
(Function) According to the lightning arrester of the present invention, since the outside of each connection part of the laminated lightning arrester unit is covered with an insulation layer, the metal flange that is the connection part and the outer surface of the insulator tube can be completely insulated. , it is possible to prevent external current flowing on the surface of the insulator from flowing into the inside.

(実施例) 以下、本発明の一実施例を第1図に基づいて具体的に説
明する。なお、第3図に示した従来型と同一の部利には
同一の符号をイー1して、説明は省略する。
(Example) Hereinafter, an example of the present invention will be specifically described based on FIG. Note that the same parts and profits as those of the conventional type shown in FIG. 3 are given the same reference numerals as E1, and the explanation thereof will be omitted.

本実施例においては、第1図に示した様に、上段単位1
と下段単位2との接続部である金属製フランジ(5a、
5bの外側に、それらを被覆するために、熱収縮性を有
する絶縁部祠である絶縁デユープ11−が装着されてい
る。この絶縁チューブ11を装着するに当たっては、碍
管胴部13との接合部が流線形状になるように、金属製
フランジ6a、5b及びセメンチング8部分の周囲及び
接続ボルト7と金属製フランジの接続部に、ゴム状パテ
]2が塗布されている。また、前記絶縁チューブ11と
しては、耐l・ラッキング性及び耐エロージョン性に優
れ、且つ、表面が発水性を有するH料、例えば、シリコ
ンゴムあるいはエチレンプロピレンゴム(EPR)など
を用いることができる。
In this embodiment, as shown in FIG.
The metal flange (5a,
An insulating duplex 11-, which is a heat-shrinkable insulating layer, is attached to the outside of the 5b in order to cover them. When installing this insulating tube 11, the area around the metal flanges 6a, 5b and the cementing 8 part and the connection area between the connecting bolt 7 and the metal flange should be adjusted so that the joint part with the insulator tube body 13 has a streamlined shape. A rubber-like putty] 2 is applied to the surface. Further, as the insulating tube 11, an H material having excellent l/racking resistance and erosion resistance and having a water repellent surface, such as silicone rubber or ethylene propylene rubber (EPR), can be used.

また、絶縁デユープ11の内面には液状のゴj、シール
祠が塗布されている。
Further, the inner surface of the insulating duplex 11 is coated with a liquid sealant.

なお、熱収縮性を有する絶縁チューブ11は、所定の温
度で一定時間加熱すると径方向に収縮し、最終的には内
面に塗布した液状のゴl、シール祠を介して、碍管胴部
13と金属製フランジ5,6の表面に密着するものであ
る。
The heat-shrinkable insulating tube 11 contracts in the radial direction when heated at a predetermined temperature for a certain period of time, and eventually connects to the insulating tube body 13 through the liquid glue applied to the inner surface and the sealant. It is in close contact with the surfaces of the metal flanges 5 and 6.

この様な構成を有する本実施例の避雷器においては、積
層した複数個の避雷器単位の各接続部の外周面に、熱収
縮性を有する絶縁チューブ11を配設し、それを所定の
温度で一定時間加熱することによって収縮さぜ、碍管胴
部13と金属製フランジ5.6の表面に密着させる。そ
の結果、碍管3部分と、その上下両端部に設けられた金
属製フランジ5,6とが電気的に完全に分離されるので
、碍管の表面を流れる外部電流isと内部電流ieとを
分離することができる。また、碍管が汚損されている場
合であっても、碍管の表面を流れる外部電流isが避雷
器内部に侵入することを防止できるので、避雷器内部に
配設された内部要素4の非直線抵抗体に外部電流isが
流れ込むことはなく、非直線抵抗体が熱破壊を起こす危
険性もない。
In the lightning arrester of this embodiment having such a configuration, a heat-shrinkable insulating tube 11 is provided on the outer circumferential surface of each connection part of a plurality of laminated lightning arrester units, and the insulation tube 11 is kept constant at a predetermined temperature. By heating for a period of time, it shrinks and is brought into close contact with the surfaces of the insulator body 13 and the metal flange 5.6. As a result, the insulator tube 3 portion and the metal flanges 5 and 6 provided at both upper and lower ends thereof are completely electrically separated, so that the external current is flowing through the surface of the insulator tube and the internal current ie are separated. be able to. Furthermore, even if the insulator tube is contaminated, the external current is flowing on the surface of the insulator tube can be prevented from entering the inside of the arrester. No external current is flows into the structure, and there is no risk of thermal damage to the nonlinear resistor.

この様に、本実施例によれは、複数個積層した避雷器単
位の各接続部の外周部に、熱収縮性を有する絶縁デユー
プを装着することによって、611管部分とそれらの接
続部である金属製フランジとを電気的に完全に分離する
ことができ、外部電流が避雷器の内部に流入することを
防止することができる。
In this way, according to this embodiment, by attaching a heat-shrinkable insulating dupe to the outer periphery of each connection part of a plurality of stacked lightning arrester units, the 611 tube part and the metal that is their connection part are connected. The lightning arrester can be completely electrically isolated from the lightning arrester flange, and external current can be prevented from flowing into the lightning arrester.

なお、本発明は上述した実施例に限定されるものではな
く、第2図に示した様に、熱収縮性を有する絶縁部祠の
外周面上に、その径が碍管3に形成されたひだより大き
く、また、外縁側が下方に傾斜している鍔部20を形成
しても良い。この場合、前記鍔部20は水切り効果を有
する。即ち、上段単位1の碍管3aの表面を流れてきた
汚損水は、鍔部20のl−面に沿って落下するので、下
段単位2の碍管3bの表面には流れない。その結果、避
雷器碍管の汚損耐電圧や洗浄耐電圧を大幅に向上させる
ことができる。
Note that the present invention is not limited to the embodiments described above, and as shown in FIG. The flange portion 20 may be larger and the outer edge side may be inclined downward. In this case, the flange 20 has a draining effect. That is, the contaminated water flowing on the surface of the porcelain tube 3a of the upper unit 1 falls along the l-plane of the collar 20, and therefore does not flow onto the surface of the porcelain tube 3b of the lower unit 2. As a result, the contamination withstand voltage and cleaning withstand voltage of the lightning arrester insulator tube can be significantly improved.

[発明の効果] 以上述べた様に、本発明によれば、積層された避雷器単
位の接続部の外表面を、熱収縮性をh゛する絶縁部祠で
被覆することによって、碍管表面を流れる外部電流が避
雷器の内部に侵入することを防止した、信頼性の高い避
雷器を提供することができる。
[Effects of the Invention] As described above, according to the present invention, by covering the outer surface of the connecting portion of the laminated lightning arrester unit with an insulating layer having high heat shrinkability, the flow on the surface of the insulating tube is reduced. It is possible to provide a highly reliable lightning arrester that prevents external current from entering the lightning arrester.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の避雷器の一実施例を示す断面図、第2
図は本発明の他の実施例を示す断面図、第3図は従来の
避雷器の一例を示す断面図である。 1、・・・−1―1単位、2・・・下段単位、3・・・
碍管、4・・・内部要素、5a、5b・・・−に1部金
属製フランジ、6a、6b・・・・・・下部金属製フラ
ンジ、7・・・接続ポルI・、8・・・セメンチング、
10・・・避雷器、1]・・・絶縁チューブ、12・・
・ゴム状パテ、13・・・碍管胴部。 第 図 第 図
Fig. 1 is a sectional view showing one embodiment of the lightning arrester of the present invention, Fig. 2 is a sectional view showing one embodiment of the lightning arrester of the present invention;
The figure is a sectional view showing another embodiment of the present invention, and FIG. 3 is a sectional view showing an example of a conventional lightning arrester. 1,...-1-1 unit, 2...lower unit, 3...
Insulator pipe, 4...Internal element, 5a, 5b...1 part metal flange, 6a, 6b...Lower metal flange, 7...Connection pole I, 8... cementing,
10... Lightning arrester, 1]... Insulating tube, 12...
・Rubber-like putty, 13...Insulator tube body. Figure Figure

Claims (1)

【特許請求の範囲】 磁器製の碍管内部に内部要素を収納し、また、碍管の両
端に金属製フランジを設けて密封することによって避雷
器単位を構成し、この避雷器単位を複数個積層して成る
避雷器において、 前記積層された避雷器単位の接続部の外表面を、熱収縮
性を有する絶縁部材で被覆したことを特徴とする避雷器
[Claims] A lightning arrester unit is constructed by housing internal elements inside a porcelain insulator tube and sealing it with metal flanges at both ends of the insulator tube, and a plurality of these lightning arrester units are stacked. A lightning arrester, characterized in that the outer surface of the connecting portion of the laminated lightning arrester unit is covered with an insulating member having heat shrinkability.
JP2161262A 1990-06-21 1990-06-21 Surge arrester Expired - Fee Related JP2601936B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2161262A JP2601936B2 (en) 1990-06-21 1990-06-21 Surge arrester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2161262A JP2601936B2 (en) 1990-06-21 1990-06-21 Surge arrester

Publications (2)

Publication Number Publication Date
JPH0453205A true JPH0453205A (en) 1992-02-20
JP2601936B2 JP2601936B2 (en) 1997-04-23

Family

ID=15731758

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2161262A Expired - Fee Related JP2601936B2 (en) 1990-06-21 1990-06-21 Surge arrester

Country Status (1)

Country Link
JP (1) JP2601936B2 (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918586A (en) * 1982-07-21 1984-01-30 株式会社東芝 Arrester unit
JPS60257106A (en) * 1984-06-01 1985-12-18 松下電器産業株式会社 surge absorption element

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5918586A (en) * 1982-07-21 1984-01-30 株式会社東芝 Arrester unit
JPS60257106A (en) * 1984-06-01 1985-12-18 松下電器産業株式会社 surge absorption element

Also Published As

Publication number Publication date
JP2601936B2 (en) 1997-04-23

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