JPH0519245B2 - - Google Patents
Info
- Publication number
- JPH0519245B2 JPH0519245B2 JP14458388A JP14458388A JPH0519245B2 JP H0519245 B2 JPH0519245 B2 JP H0519245B2 JP 14458388 A JP14458388 A JP 14458388A JP 14458388 A JP14458388 A JP 14458388A JP H0519245 B2 JPH0519245 B2 JP H0519245B2
- Authority
- JP
- Japan
- Prior art keywords
- lightning arrester
- porcelain
- manufacturing
- lid
- insulator
- 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 - Lifetime
Links
- 238000004519 manufacturing process Methods 0.000 claims description 19
- 229910052573 porcelain Inorganic materials 0.000 claims description 19
- 239000011521 glass Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000010438 heat treatment Methods 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 8
- 230000006698 induction Effects 0.000 claims description 8
- 238000002844 melting Methods 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000003825 pressing Methods 0.000 claims 1
- 239000012212 insulator Substances 0.000 description 17
- 239000000919 ceramic Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000012784 inorganic fiber Substances 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 230000001568 sexual effect Effects 0.000 description 1
- 238000010583 slow cooling Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
Landscapes
- Insulators (AREA)
- Insulating Bodies (AREA)
Description
（産業上の利用分野）
本発明は避雷素子を内蔵した避雷碍子の製造方
法に関し、特にガラス封着を部分加熱によつて簡
単に実施できる製造効率の優れた避雷碍子の製造
方法に関するものである。
（従来の技術）
従来から、碍子に避雷機能を付加することによ
り、送電線の把持機能を維持したまま電直撃によ
る故障事故を低減する避雷碍子が使用されてい
る。
一例として、本出願人は特開昭57−160555号公
報において、落雷時の過大電流から碍子自体を保
護する手段としてのZnO素子を、碍子内部に無機
ガラスで一体固着した避雷碍子およびその製造方
法を開示している。この避雷碍子は、ZnO素子周
囲と碍子が無機ガラスで一体化しているため、気
密絶縁性が非常に優れている特徴がある。
（発明が解決しようとする課題）
しかしながら、上述した避雷碍子の製造方法で
は、碍子全体を電気炉等の大型の均熱炉内に保持
しつつ無機ガラスを流し込むため、製造効率が悪
いとともに無機ガラスで一体化した後に除冷等の
工程が必要であつた。従つて、製造方法として封
着に長時間を要するとともに大型の炉が必要であ
りさらに一回の封着操作で製造可能な避雷碍子の
個数は均熱炉の内容積に制限されるため効率的な
製造は不可能であつた。
本発明の目的は上述した製造工程上の諸問題を
解消して、避雷機能および気密絶縁性を維持する
避雷碍子を簡単な設備で迅速に製造することがで
きるとともに、所望の場合に避雷素子の周囲雰囲
気を自由に制御できる避雷碍子の製造方法を提供
しようとするものである。
（課題を解決するための手段）
本発明の避雷碍子の製造方法は、避雷素子を磁
器内孔に気密に設置する構造の避雷碍子の製造方
法において、避雷素子の上下の導電性の蓋と磁器
との間に無機ガラスを塗布加熱して、無機ガラス
を溶融固着することにより、上下の蓋と磁器との
間を気密に接合することを特徴とするものであ
る。
（作用）
上述した構成において、ZnO素子の上下の蓋部
を導電性材料により構成し、高周波誘導加熱を適
用して蓋部を誘導加熱しているため、部分的な加
熱による蓋部分の封着が可能となるとともに、
ZnO素子の周囲雰囲気の調整が可能となる。
（実施例）
第１図は本発明の避雷碍子の製造方法により製
造した避雷碍子の一例を模式的に示す部分断面図
である。本実施例では、碍管からなる磁器円筒１
の磁器内孔部にZnOを主成分とる円柱状の避雷素
子２を気密状態に収納して避雷碍子を形成してい
る。即ち、磁器円筒１の上端部３−１及び下端部
３−２をそれぞれ金属性の蓋材料４−１，４−２
と無機ガラス５−１，５−２を用いて気密に封着
している。また避雷素子２の側周と磁器円筒１の
内壁の間隙には、放圧時に発生する内圧上昇を緩
和し、磁器本体を防護する目的で、補強部材とし
てセラミツク円筒６及び無機繊維７を配置してい
る。更に、避雷素子２と上端部の蓋材４−１の間
にはバネ性を有する導電材料８を配することによ
り、避雷碍子に常時負荷される外部応力を緩和す
る構造としている。
また、第２図は碍管からなる磁器円筒１の上下
端部と導電性セラミツク蓋材料９−１，９−２を
それぞれ無機ガラス５−１，５−２を用いて気密
に封着した構造を模式的に示す例である。
いずれの構造とも、磁器円筒１の端部と金属あ
るいは導電性セラミツクよりなる導電性材料との
間を無機ガラス５−１，５−２を用いて気密に封
着するために、その接触面に種々の方法により無
機ガラスを塗布する必要がある。
塗布の方法としては、従来から公知のガラス粉
末を直接介在させる方法、スプレーにより介在さ
せる方法、ペースト状またはテープ状として介在
させる方法を使用できる。その後、上蓋４−１，
９−１と下蓋４−２，９−２とを両側から押圧し
た状態で導電体よりなる蓋を誘導加熱して、無機
ガラス５−１，５−２を熔融することにより、第
１図においては上蓋４−１と磁器上端面３−１お
よび下蓋４−２と磁器下端面３−２とを気密に封
着している。
本発明の加熱の方法としては上蓋および下蓋が
導電性の材料からできているため、高周波誘導加
熱により上蓋および下蓋を加熱する方法をとつて
いる。高周波誘導加熱による場合は、大型の加熱
設備が必要ないとともに、蓋体のみの部分加熱が
でき、さらに避雷素子２の周囲気体の内圧および
雰囲気を自由に調整することができる。すなわ
ち、１〜10気圧の好ましい内圧にできるととも
に、高絶縁性のガスであるSF6等を封入すること
も可能である。またこの場合は、加熱部分を局在
化できるため、補強部材としてFRP性のものを
使用できる。なお、上述した製造法において、予
じめ酸化雰囲気で800〜1000℃の温度で加熱して
酸化被膜を表面に形成した金属製の蓋を使用する
とより好ましいともに、蓋の接合部分に予じめ無
機ガラスを塗布し焼成した蓋を使用することがよ
り好ましい。
第１図に示す避雷碍子において蓋部と磁器端部
とのガラスによる封着構造および構造条件を種々
変えて、第１票に示す本発明の試料No.１〜６を準
備した。
(Industrial Application Field) The present invention relates to a method for manufacturing a lightning arrester with a built-in lightning arrester element, and particularly to a method for manufacturing a lightning arrester with excellent manufacturing efficiency in which glass sealing can be easily performed by partial heating. . (Prior Art) Lightning arrester insulators have been used in the past, which reduce failures caused by direct hits while maintaining the power transmission line gripping function by adding a lightning protection function to the insulators. As an example, in Japanese Patent Application Laid-Open No. 57-160555, the present applicant discloses a lightning arrester in which a ZnO element is integrally fixed inside the insulator with inorganic glass as a means of protecting the insulator itself from excessive current during a lightning strike, and a method for manufacturing the same. is disclosed. This lightning arrester has excellent airtight insulation properties because the ZnO element and the insulator are integrated with inorganic glass. (Problems to be Solved by the Invention) However, in the method for manufacturing lightning arrester insulators described above, inorganic glass is poured while the entire insulator is held in a large soaking furnace such as an electric furnace, which results in poor manufacturing efficiency and It was necessary to perform a step such as slow cooling after the two were integrated. Therefore, as a manufacturing method, sealing takes a long time and requires a large furnace, and the number of lightning arresters that can be manufactured in one sealing operation is limited to the internal volume of the soaking furnace, making it less efficient. It would have been impossible to manufacture it. It is an object of the present invention to solve the above-mentioned problems in the manufacturing process, to quickly manufacture a lightning arrester that maintains lightning protection function and airtight insulation using simple equipment, and to make it possible to quickly manufacture a lightning arrester insulator that maintains lightning protection function and airtight insulation. The present invention aims to provide a method for manufacturing a lightning arrester that allows the surrounding atmosphere to be freely controlled. (Means for Solving the Problems) A method for manufacturing a lightning arrester according to the present invention is a method for manufacturing a lightning arrester having a structure in which a lightning arrester is airtightly installed in a porcelain inner hole. It is characterized by an airtight bond between the upper and lower lids and the porcelain by applying and heating inorganic glass between them and melting and fixing the inorganic glass. (Function) In the above configuration, the upper and lower lids of the ZnO element are made of conductive material, and the lids are induction heated using high-frequency induction heating, so the lids can be sealed by partial heating. At the same time,
It becomes possible to adjust the surrounding atmosphere of the ZnO element. (Example) FIG. 1 is a partial sectional view schematically showing an example of a lightning arrester manufactured by the method for manufacturing a lightning arrester insulator of the present invention. In this embodiment, a porcelain cylinder 1 made of an insulator tube is used.
A cylindrical lightning arrester element 2 containing ZnO as a main component is hermetically housed in the inner hole of the porcelain to form a lightning arrester. That is, the upper end 3-1 and lower end 3-2 of the porcelain cylinder 1 are covered with metallic lid materials 4-1 and 4-2, respectively.
and inorganic glasses 5-1 and 5-2 are used to airtightly seal them. In addition, a ceramic cylinder 6 and inorganic fibers 7 are arranged as reinforcing members in the gap between the side circumference of the lightning arrester element 2 and the inner wall of the porcelain cylinder 1 in order to alleviate the increase in internal pressure that occurs during pressure release and to protect the porcelain body. ing. Further, by disposing a conductive material 8 having spring properties between the lightning arrester element 2 and the lid member 4-1 at the upper end, the structure is such that the external stress constantly applied to the lightning arrester is alleviated. FIG. 2 shows a structure in which the upper and lower ends of a porcelain cylinder 1 made of an insulator tube and conductive ceramic lid materials 9-1 and 9-2 are hermetically sealed using inorganic glasses 5-1 and 5-2, respectively. This is a schematic example. In either structure, inorganic glasses 5-1 and 5-2 are used to airtightly seal between the end of the porcelain cylinder 1 and a conductive material made of metal or conductive ceramic. It is necessary to apply inorganic glass by various methods. As a method of application, conventionally known methods such as directly applying glass powder, applying by spraying, and applying in the form of a paste or tape can be used. After that, the upper lid 4-1,
9-1 and the lower lids 4-2, 9-2 are pressed from both sides, the lid made of a conductor is heated by induction to melt the inorganic glasses 5-1, 5-2. In this case, the upper lid 4-1 and the porcelain upper end surface 3-1 and the lower lid 4-2 and the porcelain lower end surface 3-2 are hermetically sealed. As the heating method of the present invention, since the upper lid and lower lid are made of a conductive material, a method is used in which the upper lid and the lower lid are heated by high frequency induction heating. When high-frequency induction heating is used, large-scale heating equipment is not required, only the lid can be partially heated, and the internal pressure and atmosphere of the gas surrounding the lightning arrester element 2 can be freely adjusted. That is, it is possible to maintain a preferable internal pressure of 1 to 10 atmospheres, and also to fill in a highly insulating gas such as SF 6 . Furthermore, in this case, since the heated portion can be localized, FRP materials can be used as the reinforcing member. In addition, in the above manufacturing method, it is more preferable to use a metal lid that has been heated in an oxidizing atmosphere at a temperature of 800 to 1000°C to form an oxide film on the surface. It is more preferable to use a lid coated with inorganic glass and fired. Samples Nos. 1 to 6 of the present invention shown in Sheet 1 were prepared by varying the glass sealing structure and structural conditions between the lid and the porcelain end of the lightning arrester shown in FIG. 1.
【表】【table】
【表】
第１表に示すとおり、各種封着材料、補強材が
使用できるとともにZnO素子周囲の雰囲気調整が
可能であり、こうれらはいずれも高周波誘導加熱
により導電材よりなる蓋体の加熱により短時間で
封着できる。
本発明は上述した実施例にのみ限定されるもの
ではなく、幾多の変形、変更が可能である。例え
ば上述した実施例では、上蓋および下蓋と磁器円
筒の接着端面をテープ状としたが、第２図に示す
形状でも良いことはいうまでもない。また、本発
明は懸垂型の避雷碍子だけでなく、他の形状の碍
子にも適用できることも明らかである。
（発明の効果）
以上の説明から明らかなように、本発明の避雷
碍子の製造方法によれば、ZnO素子上下部の導電
性の蓋のみを碍子本体と無機ガラスで誘導加熱に
よる部分的に加熱で気密封着することにより、放
圧時にZnO素子を収納する蓋に破壊位置を局在化
でき、その結果碍子本体へのクラツクの伸展を防
止して、異常過電流短絡時の放圧特性を向上する
ことができる。また、加熱装置の小型化が達成で
きるとともに、避雷素子の周囲雰囲気を所望のも
のにすることができる。[Table] As shown in Table 1, various sealing materials and reinforcing materials can be used, and the atmosphere around the ZnO element can be adjusted, and all of these can be used to heat the lid made of conductive material using high-frequency induction heating. can be sealed in a short time. The present invention is not limited only to the embodiments described above, and numerous modifications and changes are possible. For example, in the above-described embodiment, the adhesive end surfaces of the upper and lower lids and the porcelain cylinder were tape-shaped, but it goes without saying that the shapes shown in FIG. 2 may also be used. Furthermore, it is clear that the present invention is applicable not only to suspended type lightning arrester insulators but also to insulators of other shapes. (Effects of the Invention) As is clear from the above explanation, according to the method for manufacturing a lightning arrester of the present invention, only the conductive lids at the top and bottom of the ZnO element are partially heated by induction heating using the insulator body and inorganic glass. By airtightly sealing the insulator, it is possible to localize the fracture location on the lid housing the ZnO element during pressure release, thereby preventing the crack from extending to the insulator body and improving the pressure release characteristics in the event of an abnormal overcurrent short circuit. can be improved. Further, the heating device can be made smaller, and the atmosphere around the lightning arrester element can be made into a desired one.
第１図および第２図は本発明の方法により製造
した避雷碍子の異なる例を模式的に示す部分断面
説明図である。
１……磁器円筒、２……避雷素子、３−１……
磁器円筒上端、３−２……磁器円筒下端、４−
１，４−２……金属蓋、５−１，５−２……無機
ガラス、６……セラミツク円筒、７……無機繊
維、８……導電材料、９−１，９−２……導電性
セラミツク。
FIG. 1 and FIG. 2 are explanatory partial cross-sectional views schematically showing different examples of lightning arrester insulators manufactured by the method of the present invention. 1...Porcelain cylinder, 2...Lightning arrester element, 3-1...
Porcelain cylinder upper end, 3-2...Porcelain cylinder lower end, 4-
1, 4-2... Metal lid, 5-1, 5-2... Inorganic glass, 6... Ceramic cylinder, 7... Inorganic fiber, 8... Conductive material, 9-1, 9-2... Conductive Sexual Ceramics.
Claims (1)
避雷碍子の製造方法において、避雷素子の上下の
導電性の蓋と磁器との間に無機ガラスを塗布介在
させ、両者を押圧した後導電体を誘導加熱して、
無機ガラスを熔融固着することにより、上下の蓋
と磁器との間を気密に接合することを特徴とする
避雷碍子の製造方法。1. In a method for manufacturing a lightning arrester in which a lightning arrester is airtightly installed in a porcelain inner hole, an inorganic glass is coated and interposed between the upper and lower conductive lids of the lightning arrester and the porcelain, and after pressing both, the conductor is by induction heating,
A method for manufacturing a lightning arrester, characterized in that the upper and lower lids and the porcelain are airtightly joined by melting and fixing inorganic glass.
Priority Applications (10)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63144583A JPH01313815A (en) | 1988-06-14 | 1988-06-14 | Manufacture of lightening protection insulator |
| IN227/CAL/89A IN171826B (en) | 1988-03-23 | 1989-03-21 | |
| EP89302884A EP0334647B1 (en) | 1988-03-23 | 1989-03-22 | Lightning arrestor insulator and method of producing the same |
| DE68922909T DE68922909T2 (en) | 1988-03-23 | 1989-03-22 | Lightning arrester insulator and manufacturing process therefor. |
| EP92114053A EP0518386B1 (en) | 1988-03-23 | 1989-03-22 | Lightning arrester insulator and method of making the same |
| DE89302884T DE68908928T2 (en) | 1988-03-23 | 1989-03-22 | Insulator for surge arresters and its manufacturing process. |
| CA000594425A CA1331781C (en) | 1988-03-23 | 1989-03-22 | Lightening arrestor insulator and method of producing the same |
| CN89102584A CN1037472C (en) | 1988-03-23 | 1989-03-23 | Lightening arrestor insulator and method of producing same |
| KR1019890003680A KR970004561B1 (en) | 1988-03-23 | 1989-03-23 | Lightening arrestor insulator and method of producing the same |
| US07/561,234 US5012383A (en) | 1988-03-23 | 1990-07-27 | Lightning arrestor insulator and method of producing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63144583A JPH01313815A (en) | 1988-06-14 | 1988-06-14 | Manufacture of lightening protection insulator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01313815A JPH01313815A (en) | 1989-12-19 |
| JPH0519245B2 true JPH0519245B2 (en) | 1993-03-16 |
Family
ID=15365497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63144583A Granted JPH01313815A (en) | 1988-03-23 | 1988-06-14 | Manufacture of lightening protection insulator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01313815A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0579819U (en) * | 1992-03-26 | 1993-10-29 | 日本碍子株式会社 | Lightning protection insulator lid mounting structure |
| CN106847431B (en) * | 2017-02-13 | 2018-06-22 | 广州中光电气科技有限公司 | A kind of lightning protection insulator being detached from failure with aging identification function |
-
1988
- 1988-06-14 JP JP63144583A patent/JPH01313815A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPH01313815A (en) | 1989-12-19 |
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