JPH0541125A - Lihgting arrester insulator and manufacture thereof - Google Patents
Lihgting arrester insulator and manufacture thereofInfo
- Publication number
- JPH0541125A JPH0541125A JP19450291A JP19450291A JPH0541125A JP H0541125 A JPH0541125 A JP H0541125A JP 19450291 A JP19450291 A JP 19450291A JP 19450291 A JP19450291 A JP 19450291A JP H0541125 A JPH0541125 A JP H0541125A
- Authority
- JP
- Japan
- Prior art keywords
- pressure
- insulating cylinder
- resistant insulating
- withstand voltage
- 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.)
- Granted
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)
- Insulators (AREA)
- Insulating Bodies (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は雷撃によるサージ電流
が電線路に侵入した場合に、それを速やかに大地に放電
するとともに、その後に生じる商用周波の続流電流を抑
制遮断して地絡事故を未然に防止することができる避雷
碍子及びその製造方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ground fault in which, when a surge current caused by a lightning strike enters an electric line, it is quickly discharged to the ground, and the subsequent current at a commercial frequency generated is suppressed and cut off. The present invention relates to a lightning protection insulator and a method for manufacturing the same, which can prevent the occurrence of the above.
【０００２】[0002]
【従来の技術及び発明が解決しようとする課題】従来、
避雷碍子として、円筒状をなす耐圧絶縁筒の内部に電圧
−電流特性が非直線性の抵抗素子を複数個直列に積層し
て収容し、該耐圧絶縁筒の両端部にはキャップ状の電極
金具を嵌合固定し、さらに前記耐圧絶縁筒の外周面にゴ
ム製の絶縁外套体を被覆したものがある。このような構
成の避雷碍子として本願出願人は次のものを提案してい
る。2. Description of the Related Art Conventionally, the problems to be solved by the invention
As a lightning arrester, a plurality of resistance elements having non-linear voltage-current characteristics are stacked in series and housed inside a cylindrical withstand voltage insulating cylinder, and cap-shaped electrode fittings are provided at both ends of the withstand voltage insulating tube. Is fitted and fixed, and the outer peripheral surface of the pressure-resistant insulating cylinder is covered with a rubber insulating jacket. The present applicant has proposed the following lightning protection insulator having such a configuration.
【０００３】（１）特開平１−１６３９２５号公報に示
すように、耐圧絶縁筒の内部に複数の抵抗素子を直接に
積層して収容するとともに、該耐圧絶縁筒の両端外周面
にキャップ状の電極金具を嵌合して耐圧絶縁筒と電極金
具の接合界面を接着剤により接着固定し、その後耐圧絶
縁筒の外周面にひだ部を有する絶縁外套体を一体にゴム
モールド成型していた。(1) As disclosed in Japanese Patent Application Laid-Open No. 1-163925, a plurality of resistance elements are directly stacked and housed inside a withstand voltage insulating cylinder, and cap-shaped on both outer peripheral surfaces of both ends of the withstand voltage insulating cylinder. The electrode metal fitting is fitted and the joint interface between the pressure resistant insulating cylinder and the electrode metal fitting is adhered and fixed by an adhesive, and then the insulating jacket having the folds on the outer peripheral surface of the pressure resistant insulating cylinder is integrally rubber-molded.
【０００４】ところが、上記の避雷碍子は、電極金具を
耐圧絶縁筒の両端外周面に接着固定する構造であるた
め、接着剤が完全に硬化して接着強度を発現するまでに
長時間を要し、組付作業時間が長くなってそのコストが
上昇するという問題があった。However, since the above-mentioned lightning arrestor has a structure in which the electrode fittings are adhered and fixed to the outer peripheral surfaces of both ends of the pressure-proof insulating cylinder, it takes a long time for the adhesive to be completely cured and the adhesive strength to be exhibited. However, there is a problem that the assembly work time becomes long and the cost increases.
【０００５】又、耐圧絶縁筒と電極金具を接着により接
合する構造であるため、両者の機械的な結合強度を充分
確保するためには接合面に凹凸をつけるなどの加工を不
可欠とするという問題もあった。Further, since the pressure-resistant insulating cylinder and the electrode fitting are bonded to each other by adhesion, in order to secure a sufficient mechanical bonding strength between the two, it is necessary to make the bonding surface uneven. There was also.
【０００６】さらに、耐圧絶縁筒の内部に抵抗素子及び
電極金具を組付けた状態で、これらを成形型内に収容し
て、所定温度に加熱された溶融ゴムを成形型のキャビテ
ィに注入して絶縁外套体をモールド成形するため、モー
ルド前に耐圧絶縁筒のみならず抵抗素子及び電極金具を
モールド成形時に加熱する必要があること、又、熱容量
が大きいことからモールド完了までの時間が増大し、製
造コストが上昇するという問題があった。Further, in a state where the resistance element and the electrode fitting are assembled inside the pressure-resistant insulating cylinder, these are housed in a molding die, and molten rubber heated to a predetermined temperature is injected into the cavity of the molding die. In order to mold the insulating jacket, it is necessary to heat not only the pressure-resistant insulating cylinder but also the resistance element and the electrode fitting before molding, and the large heat capacity increases the time to complete the molding. There was a problem that the manufacturing cost increased.
【０００７】（２）特開昭６１−１５１９１３号公報、
特開昭６１−２００６２０号公報に示すように、従来の
避雷碍子として、耐圧絶縁筒の両端外周面に雄ネジ部を
形成し、これに電極金具の円筒部内周面に形成した雌ネ
ジ部を螺合固定し、その後、耐圧絶縁筒の外周に絶縁外
套体をゴムモールドする構造のものを提案している。(2) Japanese Patent Laid-Open No. 61-151913
As shown in Japanese Patent Application Laid-Open No. 61-200620, as a conventional lightning protection insulator, male screw portions are formed on the outer peripheral surfaces of both ends of a withstand voltage insulating cylinder, and a female screw portion formed on the inner peripheral surface of the cylindrical portion of the electrode fitting is formed on this. It has been proposed that the structure is such that it is screwed and fixed, and then the insulating jacket is rubber-molded on the outer circumference of the pressure-proof insulating cylinder.
【０００８】しかしながら、耐圧絶縁筒と電極金具を螺
合する方式の避雷碍子には、（１）の接着方式よりも接
合のための時間は短縮することができるが、耐圧絶縁筒
及び電極金具にそれぞれネジ切り加工を施す必要があ
り、製造が面倒で、両者の接合界面の隙間により生じる
ガタツキを防止するため接着剤を使用する必要が生じて
組付作業が面倒になり、組付工程のコスト低減を図る上
で障害となっている。However, in the lightning arrestor of the type in which the pressure-proof insulating cylinder and the electrode fitting are screwed together, the time required for joining can be shortened compared to the bonding method of (1), but it is Since it is necessary to perform threading for each, manufacturing is troublesome, and it is necessary to use an adhesive to prevent rattling caused by the gap between the bonding interface between the two, which makes the assembly work complicated and the cost of the assembly process. This is an obstacle to reduction.
【０００９】又、（１）の従来例と同様に耐圧絶縁筒の
みならず抵抗素子及び電極金具をモールド成形前に加熱
する必要があるため、熱効率が低下し、製造工程でのコ
スト低減を図ることができないという問題があった。 （３）さらに、従来の避雷碍子として、特願平２−５７
２９８号に示すように、複数の抵抗素子を直列に積層す
るとともに、その上下両端部にバネを介して電極金具を
配置し、前記両電極金具を上下の押圧治具により押圧し
た状態で、前記両電極金具の外周面に対し、両端部にボ
ルト挿通孔を形成した長尺の絶縁部材を所定間隔をおい
て円筒状に配置して絶縁部材の両端部のボルト挿通孔か
らボルトを絶縁部材に螺合して電極金具に各絶縁部材を
締め付け固定し、最後に絶縁部材の外周に絶縁外套体を
モールド成形するものも提案している。Further, as in the case of the conventional example of (1), not only the withstand voltage insulating cylinder but also the resistance element and the electrode fitting need to be heated before molding, so that the thermal efficiency is lowered and the cost in the manufacturing process is reduced. There was a problem that I could not. (3) Furthermore, as a conventional lightning protection insulator, Japanese Patent Application No. 2-57
As shown in No. 298, a plurality of resistance elements are laminated in series, and electrode fittings are arranged at both upper and lower ends thereof via springs, and both electrode fittings are pressed by upper and lower pressing jigs. Long insulating members with bolt insertion holes formed at both ends are arranged in a cylindrical shape at predetermined intervals on the outer peripheral surfaces of both electrode fittings, and the bolts are turned into insulating members from the bolt insertion holes at both ends of the insulating member. It has also been proposed to screw and fix each insulating member to an electrode fitting, and finally mold an insulating jacket on the outer periphery of the insulating member.
【００１０】ところが、この従来例は部品点数が増加す
るとともに、組付け作業が非常に面倒であり、絶縁外套
体のモールド成形時に熱損失が増大し、製品のコスト低
減を図ることができないという前述した問題を有してい
る。However, in this conventional example, the number of parts is increased, the assembling work is very troublesome, heat loss is increased during the molding of the insulating jacket, and the cost of the product cannot be reduced. Have a problem.
【００１１】この発明は上記従来の問題点を解消するた
めになされたものであって、第１の目的は、部品点数を
減少して製造及び組付けを容易に行い、これにより製品
コストを低減することができる避雷碍子を提供すること
にある。The present invention has been made in order to solve the above-mentioned conventional problems. A first object of the present invention is to reduce the number of parts to facilitate manufacturing and assembly, thereby reducing the product cost. The purpose is to provide a lightning protection insulator.
【００１２】又、この発明の第２の目的は、避雷碍子の
製造工程で熱損失を抑制して製造コストを低減すること
ができる避雷碍子の製造方法を提供することにある。A second object of the present invention is to provide a method of manufacturing a lightning protection insulator which can suppress heat loss in the manufacturing process of the lightning protection insulator and reduce the manufacturing cost.
【００１３】[0013]
【課題を解決するための手段】請求項１記載の発明は上
記第１の目的を達成するため、耐圧絶縁筒の内部に電圧
−電流特性が非直線性の抵抗素子を収容するとともに、
耐圧絶縁筒の外周に絶縁外套体を形成し、前記耐圧絶縁
筒の両端開口部にはスペーサを嵌入し、さらに前記耐圧
絶縁筒の両端外周にはキャップ状の電極金具を嵌合し
て、該電極金具の筒状かしめ部を前記スペーサ側へ耐圧
絶縁筒を圧着するようにかしめ固定するという手段をと
っている。In order to achieve the first object, the invention as set forth in claim 1 accommodates a resistance element having a non-linear voltage-current characteristic inside a withstand voltage insulating cylinder.
An insulating jacket is formed on the outer periphery of the pressure-proof insulating cylinder, spacers are fitted in openings at both ends of the pressure-proof insulating cylinder, and cap-shaped electrode fittings are fitted on the outer circumferences of both ends of the pressure-proof insulating cylinder. The means for fixing the cylindrical caulking portion of the electrode fitting to the spacer side by crimping the pressure resistant insulating cylinder is adopted.
【００１４】又、請求項２記載の発明は上記第２の目的
を達成するため、耐圧絶縁筒の外周面に絶縁外套体をモ
ールド成型し、次に、耐圧絶縁筒の内部に電圧−電流特
性が非直線性の抵抗素子を収容し、耐圧絶縁筒の両端内
部にスペーサを嵌入し、さらに、前記耐圧絶縁筒の両端
外周面にキャップ状の電極金具を嵌合して、該電極金具
の筒状かしめ部を前記スペーサ側へ耐圧絶縁筒を圧着す
るようにかしめ固定するという方法をとっている。In order to achieve the above-mentioned second object, the invention according to claim 2 molds an insulation jacket on the outer peripheral surface of the pressure-proof insulating cylinder, and then, voltage-current characteristics inside the pressure-proof insulating cylinder. Accommodates a non-linear resistance element, inserts spacers inside both ends of the pressure-resistant insulating cylinder, and further fits cap-shaped electrode metal fittings on the outer peripheral surfaces of both ends of the pressure-resistant insulating metal cylinder. The crimping portion is crimped and fixed to the spacer side by crimping a pressure resistant insulating cylinder.
【００１５】[0015]
【作用】請求項１記載の発明は、耐圧絶縁筒の端部内側
にスペーサを嵌入して電極金具の筒状かしめ部をスペー
サへ向かって耐圧絶縁筒を圧着するようにかしめ着した
ので、前述の構造に比べて部品点数を少なくすることが
できるとともに、製造及び組付作業が容易となり、製品
コストの低減を図ることができる。According to the first aspect of the present invention, the spacer is fitted inside the end portion of the pressure-resistant insulating cylinder, and the cylindrical caulking portion of the electrode fitting is caulked so as to crimp the pressure-resistant insulating cylinder toward the spacer. It is possible to reduce the number of parts as compared with the structure described in (1), facilitate manufacturing and assembling work, and reduce product cost.
【００１６】又、スペーサと電極金具の筒状かしめ部と
の間で耐圧絶縁筒の端部を圧着する構造であるため、各
々の圧着面に凹凸の加工が不要となり、製作工数を低減
することができる。Further, since the end portion of the pressure-proof insulating cylinder is crimped between the spacer and the tubular caulking portion of the electrode fitting, it is not necessary to form irregularities on each crimping surface, and the number of manufacturing steps can be reduced. You can
【００１７】さらに、耐圧絶縁筒の外周面と電極金具の
かしめ部の内周面との間に絶縁外套体の端部が圧着され
るので、接着剤なして気密性を付与することもできる。
又、請求項２記載の発明は、絶縁外套体のモールド成形
工程において、耐圧絶縁筒の内部には抵抗素子が収容さ
れていないので、抵抗素子を加熱する必要がなく、熱効
率が向上し、製造コストを低減することができる。Further, since the end portion of the insulating jacket is pressure-bonded between the outer peripheral surface of the pressure-proof insulating cylinder and the inner peripheral surface of the caulked portion of the electrode fitting, airtightness can be imparted without an adhesive.
According to the second aspect of the present invention, since the resistance element is not housed inside the withstand voltage insulating cylinder in the molding process of the insulation jacket, it is not necessary to heat the resistance element, and the thermal efficiency is improved, and the manufacturing is improved. The cost can be reduced.
【００１８】[0018]
【実施例】以下、この発明を具体化した一実施例を図面
に基づいて説明する。ます、図１によりこの発明の製造
方法で得られた避雷碍子について説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to the drawings. First, the lightning protection insulator obtained by the manufacturing method of the present invention will be described with reference to FIG.
【００１９】繊維強化合成樹脂（ＦＲＰ）よりなる耐圧
絶縁筒１の外周面には、放圧口１５部を含み、かつ端部
付近を除きＥＰＤＭあるいはシリコンゴム等により絶縁
外套体２が形成され、その外周面には多数のひだ部３が
一体に形成されている。この耐圧絶縁筒１の端部外周面
には電極金具９，１０との接合用の凹凸加工は施されて
いない。又、前記耐圧絶縁筒１の内部には電圧−電流特
性が非直線性の例えば酸化亜鉛等よりなる多数の抵抗素
子４が直列に積層して収容され、その上下両端面には皿
バネ５，６を介してアルミニウムあるいは銅等の金属製
の円柱状をなすスペーサ７，８が接合されている。前記
両スペーサ７，８の外径は、耐圧絶縁筒１の内径とほぼ
同じ寸法に形成されている。さらに、前記耐圧絶縁筒１
の上下両端部及び絶縁外套体１の上下両端部には、キャ
ップ状の電極金具９，１０がそれぞれ嵌合されている。
そして、電極金具９，１０の円筒状かしめ部１１，１２
の内周面には内径の異なる第１内周面１１ａ，１２ａ、
第２内周面１１ｂ，１２ｂが形成され、第１内周面１１
ａ，１２ａはスペーサ７，８に向かって耐圧絶縁筒１の
外周面にかしめ固定され、第２内周面１１ｂ，１２ｂは
絶縁外套体１の端部外周面にスペーサ７，８に向かって
かしめ固定されている。On the outer peripheral surface of the pressure-resistant insulating cylinder 1 made of fiber reinforced synthetic resin (FRP), the insulating jacket 2 is formed of EPDM or silicon rubber or the like, including the pressure release port 15 and except near the end. A large number of pleats 3 are integrally formed on the outer peripheral surface thereof. The outer peripheral surface of the end portion of the withstand voltage insulating cylinder 1 is not provided with a concavo-convex processing for joining with the electrode fittings 9 and 10. Further, a large number of resistance elements 4 made of, for example, zinc oxide having non-linear voltage-current characteristics are housed in series inside the withstand voltage insulating cylinder 1, and the disc springs 5, 5 are provided on both upper and lower end surfaces thereof. Columnar spacers 7 and 8 made of a metal such as aluminum or copper are joined to each other via 6. The outer diameters of the spacers 7 and 8 are formed to have substantially the same dimensions as the inner diameter of the pressure-proof insulating cylinder 1. Further, the pressure-proof insulating cylinder 1
Cap-shaped metal fittings 9 and 10 are fitted to the upper and lower end portions of and the upper and lower end portions of the insulating jacket 1.
Then, the cylindrical caulking portions 11, 12 of the electrode fittings 9, 10
The inner peripheral surfaces of the first inner peripheral surfaces 11a, 12a having different inner diameters,
The second inner peripheral surfaces 11b and 12b are formed, and the first inner peripheral surface 11 is formed.
a and 12a are caulked and fixed to the outer peripheral surface of the pressure-proof insulating cylinder 1 toward the spacers 7 and 8, and the second inner peripheral surfaces 11b and 12b are caulked to the outer peripheral surface of the end portion of the insulating jacket 1 toward the spacers 7 and 8. It is fixed.
【００２０】前記耐圧絶縁筒１及び絶縁外套体２の外周
面とかしめ部１１．１２の両内周面１１ａ，１２ａ、１
１ｂ，１２ｂとの間には、気密性をより確実にするため
接着剤１３が塗布されている。Outer peripheral surfaces of the pressure-proof insulating cylinder 1 and the insulating outer jacket 2 and both inner peripheral surfaces 11a, 12a, 1 of the caulked portion 11.12.
An adhesive 13 is applied between 1b and 12b to ensure airtightness.
【００２１】又、前記耐圧絶縁筒１の内周面と抵抗素子
４の外周面との間には、シリコンゴム等の絶縁充填材１
４が注入されている。耐圧絶縁筒１には抵抗素子４が万
一導通破壊した場合に内部のアークによる高温、高圧の
ガスを外部へ放出するための放圧孔１５が形成されてい
る。なお、電極金具９，１０にはネジ孔１６、取付部１
７が形成され、ネジ孔１６は避雷碍子を鉄塔の支持アー
ム等に取り付けるために使用され、取付部１７は放電電
極（図示略）を支持するために使用される。Insulating filler 1 such as silicon rubber is provided between the inner peripheral surface of the pressure-resistant insulating cylinder 1 and the outer peripheral surface of the resistance element 4.
4 is infused. The pressure-proof insulating cylinder 1 is formed with a pressure release hole 15 for releasing a high-temperature, high-pressure gas due to an internal arc to the outside when the resistance element 4 is conductively broken. The electrode fittings 9 and 10 have screw holes 16 and a mounting portion 1
7 is formed, the screw hole 16 is used for attaching the lightning protection insulator to a support arm or the like of the steel tower, and the attachment portion 17 is used for supporting a discharge electrode (not shown).
【００２２】次に、前記のように構成された避雷碍子の
製造方法を図２〜図６に基づいて説明する。最初に、図
２に示すよように、耐圧絶縁筒１を単体で製造し、この
単体を図示しない成形型内に収容した状態で、成形型の
キャビティ内に溶融ゴムを注入して硬化させ、耐圧絶縁
筒１の外周面に絶縁外套体２をモールド成形する。この
とき、絶縁外套体２は耐圧絶縁筒１の外周面に加硫接着
される。Next, a method of manufacturing the lightning protection insulator configured as described above will be described with reference to FIGS. First, as shown in FIG. 2, the pressure-resistant insulating cylinder 1 is manufactured as a single body, and in a state where the single body is housed in a molding die (not shown), molten rubber is injected into the cavity of the molding die and cured, An insulating jacket 2 is molded on the outer peripheral surface of the pressure-proof insulating cylinder 1. At this time, the insulating jacket 2 is vulcanized and adhered to the outer peripheral surface of the pressure-proof insulating cylinder 1.
【００２３】次に、図３に示すように耐圧絶縁筒１の下
端部に下部電極金具１０を嵌合し、その下面を支持金具
２１により支持するとともに、前記耐圧絶縁筒１の内部
に下部のスペーサ８を収容し、スペーサ押圧治具２２に
よりスペーサ８の上面を押圧した状態で、かしめ用シリ
ンダ２３のピストンロッド２４に取り付けた押圧プレー
ト２５により下部電極金具１０のかしめ部１２の外周面
を複数箇所で図４に示すようにスペーサ８の中心に向か
って押圧し、電極金具１０のかしめ部１２を耐圧絶縁筒
１及び絶縁外套体２の端部を圧着した状態でスペーサ８
にかしめ固定する。この工程において前記耐圧絶縁筒１
と電極金具１０との界面に樹脂系あるいはゴム系の接着
剤１３を予め塗布しておくことにより、気密性を向上す
るようにしてもよい。Next, as shown in FIG. 3, the lower electrode metal fitting 10 is fitted to the lower end of the pressure-resistant insulating cylinder 1, and the lower surface thereof is supported by the support metal fitting 21. With the spacer 8 accommodated and the upper surface of the spacer 8 pressed by the spacer pressing jig 22, a plurality of outer peripheral surfaces of the caulking portion 12 of the lower electrode fitting 10 are pressed by the pressing plate 25 attached to the piston rod 24 of the caulking cylinder 23. 4 is pressed toward the center of the spacer 8 as shown in FIG. 4, and the caulking portion 12 of the electrode fitting 10 is crimped to the end portions of the pressure-proof insulating cylinder 1 and the insulating jacket 2 to form the spacer 8
Secure by crimping. In this step, the pressure-proof insulating cylinder 1
The airtightness may be improved by applying a resin-based or rubber-based adhesive 13 in advance to the interface between the electrode fitting 10 and the electrode fitting 10.
【００２４】さらに、図５に示すように前記耐圧絶縁筒
１内部に皿バネ６、抵抗素子４、皿バネ５を順次収容
し、上部の皿バネ５の上面を充填材注入用治具２６の下
端面で押圧した状態で、該治具に形成した注入通路２７
から耐圧絶縁筒１の内周面と抵抗素子４の外周面との間
隙に対し、絶縁充填材１４となる溶融シリコン樹脂を注
入して硬化する。このとき治具２７に形成した排気通路
２８により耐圧絶縁筒内部の空気が排出され、充填作業
が空隙全体に均一に行われる。Further, as shown in FIG. 5, the disc spring 6, the resistance element 4, and the disc spring 5 are sequentially accommodated in the pressure-resistant insulating cylinder 1, and the upper surface of the disc spring 5 on the upper side is provided with a jig 26 for injecting the filler. The injection passage 27 formed in the jig while being pressed by the lower end surface
Then, a molten silicon resin to be the insulating filling material 14 is injected into the gap between the inner peripheral surface of the withstand voltage insulating cylinder 1 and the outer peripheral surface of the resistance element 4 and cured. At this time, the air inside the pressure-resistant insulating cylinder is discharged through the exhaust passage 28 formed in the jig 27, and the filling operation is uniformly performed over the entire gap.
【００２５】最後に、図６に示すように注入治具２６を
取り外して耐圧絶縁筒１の上端内側にスペーサ７を嵌入
するとともに、外周に上部電極金具９を嵌合し、該電極
金具９の上面を押圧治具２９により下方へ押圧した状態
で、電極金具９のかしめ部１１の外周面をかしめ用シリ
ンダ３０のピストンロッド３１に取り付けた押圧プレー
ト３２により押圧してかしめ固定する。Finally, as shown in FIG. 6, the injection jig 26 is removed, the spacer 7 is fitted inside the upper end of the pressure-resistant insulating cylinder 1, and the upper electrode fitting 9 is fitted around the outer circumference thereof. With the upper surface pressed downward by the pressing jig 29, the outer peripheral surface of the caulking portion 11 of the electrode fitting 9 is pressed by the pressing plate 32 attached to the piston rod 31 of the caulking cylinder 30 to be caulked and fixed.
【００２６】以上のようにして構成された避雷碍子は、
例えば送電線支持碍子装置に適用され、下部電極金具１
０には接地側の放電電極（図示略）が支持される。そし
て、送電線側に支持した課電側の放電電極（図示略）か
ら気中放電間隙をフラッシオーバーして接地側の放電電
極に流れ、その後避雷碍子の抵抗素子４を通り、上部電
極金具９から鉄塔の支持アームに流れ、大地に放電され
る。又、その後に生じる続流電流は気中放電間隙及び抵
抗素子４の抵抗値の復元により抑制遮断され、地絡事故
が未然に防止される。The lightning protection insulator constructed as described above is
For example, it is applied to a power line supporting insulator device, and the lower electrode fitting 1
A discharge electrode (not shown) on the ground side is supported by 0. Then, a discharge electrode (not shown) supported on the power transmission line side flows over the air discharge gap to flow to the discharge electrode on the ground side, and then passes through the resistance element 4 of the lightning protection insulator, and passes through the upper electrode fitting 9 Flows into the support arm of the tower and is discharged to the ground. Further, the subsequent current generated thereafter is suppressed and interrupted by the restoration of the air discharge gap and the resistance value of the resistance element 4, and the ground fault is prevented in advance.
【００２７】さて、この実施例においては、耐圧絶縁筒
１の端部内側にスペーサ７，８を嵌入して、電極金具
９，１０の円筒状かしめ部１１，１２をスペーサ７，８
に向かってかしめ着したので、耐圧絶縁筒１及び電極金
具９，１０にネジを形成したり、接着剤により固定した
りする従来の連結構造と比較して、製造及び組付作業を
迅速かつ容易に行うことができ、製品のコスト低減を図
ることができる。In this embodiment, the spacers 7 and 8 are fitted inside the end portions of the pressure-proof insulating cylinder 1 so that the cylindrical caulking portions 11 and 12 of the electrode fittings 9 and 10 are fitted to the spacers 7 and 8.
Since it is caulked toward, the manufacturing and assembling work is quicker and easier than the conventional connecting structure in which the pressure-proof insulating cylinder 1 and the electrode fittings 9 and 10 are formed with screws or fixed with an adhesive. Therefore, the cost of the product can be reduced.
【００２８】又、前記実施例においては、耐圧絶縁筒１
単体に絶縁外套体２をモールド形成したので、耐圧絶縁
筒１の内部に抵抗素子４が存在せず、従って、抵抗素子
４を加熱するための熱量が不要になるとともに、モール
ド時間を短縮することができる。Further, in the above embodiment, the withstand voltage insulating cylinder 1 is used.
Since the insulating jacket 2 is molded as a single body, the resistance element 4 does not exist inside the withstand voltage insulation cylinder 1. Therefore, the amount of heat for heating the resistance element 4 is not necessary and the molding time is shortened. You can
【００２９】次に、この発明の別の実施例を図７に基づ
いて説明する。この実施例においては、スペーサ７
（８）と電極金具９，１０とを一体状に形成している。
この実施例では部品点数及び組付工程が少なくなる利点
はあるが、加工に手間を要するためケースバイケースで
選択されるべきである。Next, another embodiment of the present invention will be described with reference to FIG. In this embodiment, the spacer 7
(8) and the electrode fittings 9 and 10 are integrally formed.
Although this embodiment has an advantage that the number of parts and the assembling process are reduced, it requires time and labor for processing, and therefore should be selected on a case-by-case basis.
【００３０】[0030]
【発明の効果】以上詳述したように、請求項１記載の発
明は、耐圧絶縁筒及び電極金具にネジ部を加工したり、
両者の接合界面に接着剤を塗布したりする工程を不要に
して製造及び組付作業を迅速かつ容易に行うことがで
き、結合強度を向上することができ、さらに製品のコス
ト低減を図ることができる効果がある。As described in detail above, according to the invention of claim 1, the screw portion is processed on the pressure-proof insulating cylinder and the electrode fitting,
Manufacturing and assembling work can be performed quickly and easily without the step of applying an adhesive to the bonding interface between the two, the bond strength can be improved, and the cost of the product can be further reduced. There is an effect that can be done.
【００３１】又、請求項２記載の発明は、絶縁外套体の
モールド成形時に抵抗素子を加熱しなくてもよいので、
熱効率を向上し、かつモールド時間を短縮して製造コス
トを大幅に低下することができる効果がある。According to the second aspect of the present invention, since the resistance element does not have to be heated when the insulating jacket is molded,
There is an effect that the thermal efficiency is improved, the molding time is shortened, and the manufacturing cost can be significantly reduced.
【図１】この発明の避雷碍子を具体化した一実施例を示
す半縦断面図である。FIG. 1 is a semi-longitudinal sectional view showing an embodiment in which a lightning protection insulator of the present invention is embodied.
【図２】避雷碍子の耐圧絶縁筒と絶縁外套体を示す縦断
面図である。FIG. 2 is a vertical cross-sectional view showing a withstand voltage insulating cylinder and an insulating jacket of a lightning protection insulator.
【図３】下部電極金具のかしめ着工程を示す縦断面図で
ある。FIG. 3 is a vertical sectional view showing a caulking process of a lower electrode fitting.
【図４】図３のＡ−Ａ線断面図である。4 is a cross-sectional view taken along the line AA of FIG.
【図５】耐圧絶縁筒と抵抗素子との空隙へ絶縁充填材を
注入する工程を示す縦断面図である。FIG. 5 is a vertical cross-sectional view showing a step of injecting an insulating filler into a gap between the pressure-resistant insulating cylinder and the resistance element.
【図６】上部電極金具のかしめ着工程を示す縦断面図で
ある。FIG. 6 is a vertical sectional view showing a caulking process of the upper electrode fitting.
【図７】端部金具の別例を示す部分断面図である。FIG. 7 is a partial cross-sectional view showing another example of the end fitting.
１ 耐圧絶縁筒、２ 絶縁外套体、４ 抵抗素子、７
スペーサ、８ スペーサ、９ 上部電極金具、１０ 下
部電極金具、１１ かしめ部、１２ かしめ部。1 withstand voltage insulation cylinder, 2 insulation jacket, 4 resistance element, 7
Spacers, 8 spacers, 9 upper electrode fittings, 10 lower electrode fittings, 11 caulking parts, 12 caulking parts.
Claims (2)
直線性の抵抗素子を収容するとともに、耐圧絶縁筒の外
周に絶縁外套体を形成し、前記耐圧絶縁筒の両端開口部
にはスペーサを嵌入し、さらに前記耐圧絶縁筒の両端外
周にはキャップ状の電極金具を嵌合して、該電極金具の
筒状かしめ部を前記スペーサ側へ耐圧絶縁筒を圧着する
ようにかしめ固定したことを特徴とする避雷碍子。1. A resistance element having a non-linear voltage-current characteristic is accommodated inside the withstand voltage insulating cylinder, and an insulating jacket is formed on the outer periphery of the withstand voltage insulating cylinder, and openings at both ends of the withstand voltage insulating cylinder. Spacers were fitted, and furthermore, cap-shaped electrode fittings were fitted on the outer circumferences of both ends of the pressure-proof insulating cylinder, and the tubular caulking portions of the electrode fittings were caulked and fixed so as to crimp the pressure-proof insulating cylinder to the spacer side. Lightning arrester characterized by that.
ルド成型し、次に、耐圧絶縁筒の内部に電圧−電流特性
が非直線性の抵抗素子を収容し、耐圧絶縁筒の両端内部
にスペーサを嵌入し、さらに、前記耐圧絶縁筒の両端外
周面にキャップ状の電極金具を嵌合して、該電極金具の
筒状かしめ部を前記スペーサ側へ耐圧絶縁筒を圧着する
ようにかしめ固定することを特徴とする避雷碍子の製造
方法。2. An insulating jacket is molded on the outer peripheral surface of the withstand voltage insulating cylinder, and a resistance element having a non-linear voltage-current characteristic is housed inside the withstand voltage insulating tube. Spacers are fitted in, and cap-shaped electrode fittings are fitted on the outer peripheral surfaces of both ends of the pressure-proof insulating tube, and the tubular caulking portion of the electrode fittings is crimped so that the pressure-proof insulating tube is crimped to the spacer side. A method for manufacturing a lightning protection insulator characterized by fixing.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3194502A JP2837978B2 (en) | 1991-08-02 | 1991-08-02 | Lightning arrester and its manufacturing method |
| GB9216184A GB2258352B (en) | 1991-08-02 | 1992-07-30 | Surge arrester and manufacturing method thereof |
| FR9209547A FR2680054B1 (en) | 1991-08-02 | 1992-07-31 | SURGE PROTECTOR AND ITS MANUFACTURING METHOD. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3194502A JP2837978B2 (en) | 1991-08-02 | 1991-08-02 | Lightning arrester and its manufacturing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0541125A true JPH0541125A (en) | 1993-02-19 |
| JP2837978B2 JP2837978B2 (en) | 1998-12-16 |
Family
ID=16325587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3194502A Expired - Lifetime JP2837978B2 (en) | 1991-08-02 | 1991-08-02 | Lightning arrester and its manufacturing method |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2837978B2 (en) |
| FR (1) | FR2680054B1 (en) |
| GB (1) | GB2258352B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001338544A (en) * | 2000-05-31 | 2001-12-07 | Daito Co Ltd | Method for manufacturing polymer insulator, polymer insulator and die |
| WO2007058564A1 (en) * | 2005-11-14 | 2007-05-24 | Zakrytoe Akciornernoe Obschestvo 'armaturno-Izolyatornyi Zavod' | High-voltage pin-type insulator |
| KR101068258B1 (en) * | 2009-12-18 | 2011-09-28 | 한국전력공사 | Surge arrester and manufacturing method thereof |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4319986A1 (en) * | 1993-06-11 | 1994-12-15 | Siemens Ag | Surge arresters |
| FR2747500B1 (en) * | 1996-04-12 | 1998-06-26 | Soule Materiel Electr | PERFECTED SURGE PROTECTOR BASED ON VARISTORS |
| US5757604A (en) * | 1996-06-27 | 1998-05-26 | Raychem Corporation | Surge arrester having grooved and ridged terminals |
| US5680289A (en) * | 1996-06-27 | 1997-10-21 | Raychem Corporation | Surge arrester |
| US6303870B1 (en) * | 1999-02-03 | 2001-10-16 | Turbine Controls, Inc. | Insulator cover |
| JP5301320B2 (en) * | 2009-03-02 | 2013-09-25 | 三菱電機株式会社 | Lightning arrestor |
| EP2846333A1 (en) * | 2013-09-09 | 2015-03-11 | Siemens Aktiengesellschaft | Gas-insulated surge arrestor |
| CN105818695B (en) * | 2016-04-18 | 2018-04-13 | 温州益坤电气有限公司 | A kind of high-speed EMU high-voltage isulation gas path distributor |
Family Cites Families (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB268395A (en) * | 1926-03-29 | 1927-11-03 | Edmund Neumann | Method of and device for securing contact caps to electric insulators |
| CA1137159A (en) * | 1979-04-23 | 1982-12-07 | John P. Dupont | Cap seal for resilient electrical housing |
| GB2050719B (en) * | 1979-05-25 | 1983-06-08 | Bowthorpe E M P Ltd | Surge arrester |
| US4352139A (en) * | 1980-02-04 | 1982-09-28 | Rte Corporation | Flexible connector for H.V. arrester |
| US4404614A (en) * | 1981-05-15 | 1983-09-13 | Electric Power Research Institute, Inc. | Surge arrester having a non-fragmenting outer housing |
| CA1315336C (en) * | 1986-01-29 | 1993-03-30 | Rodney Meredith Doone | Electrical surge arrester/diverter |
| US4746381A (en) * | 1986-05-05 | 1988-05-24 | A. B. Chance Company | Method of making an end cap connection for a fluid-resistance electrical device |
| SE459294B (en) * | 1987-10-26 | 1989-06-19 | Asea Ab | surge |
| JPH01163925A (en) * | 1987-12-18 | 1989-06-28 | Ngk Insulators Ltd | Lightening insulator |
| US4908730A (en) * | 1988-10-14 | 1990-03-13 | Kearney | Surge arrester with shunt gap |
| NO167618C (en) * | 1989-03-20 | 1991-11-20 | Alcatel Stk As | SURVIVAL DEVICE FOR ELECTRICAL APPLIANCES. |
| JPH077613B2 (en) * | 1990-02-02 | 1995-01-30 | 東京電力株式会社 | Suspended lightning arrester |
-
1991
- 1991-08-02 JP JP3194502A patent/JP2837978B2/en not_active Expired - Lifetime
-
1992
- 1992-07-30 GB GB9216184A patent/GB2258352B/en not_active Expired - Fee Related
- 1992-07-31 FR FR9209547A patent/FR2680054B1/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001338544A (en) * | 2000-05-31 | 2001-12-07 | Daito Co Ltd | Method for manufacturing polymer insulator, polymer insulator and die |
| WO2007058564A1 (en) * | 2005-11-14 | 2007-05-24 | Zakrytoe Akciornernoe Obschestvo 'armaturno-Izolyatornyi Zavod' | High-voltage pin-type insulator |
| KR101068258B1 (en) * | 2009-12-18 | 2011-09-28 | 한국전력공사 | Surge arrester and manufacturing method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2837978B2 (en) | 1998-12-16 |
| FR2680054B1 (en) | 1994-10-07 |
| FR2680054A1 (en) | 1993-02-05 |
| GB2258352B (en) | 1995-02-15 |
| GB2258352A (en) | 1993-02-03 |
| GB9216184D0 (en) | 1992-09-09 |
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