JP4530386B2 - Polymer insulator - Google Patents

Polymer insulator Download PDF

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Publication number
JP4530386B2
JP4530386B2 JP2000343734A JP2000343734A JP4530386B2 JP 4530386 B2 JP4530386 B2 JP 4530386B2 JP 2000343734 A JP2000343734 A JP 2000343734A JP 2000343734 A JP2000343734 A JP 2000343734A JP 4530386 B2 JP4530386 B2 JP 4530386B2
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JP
Japan
Prior art keywords
bowl
rubber
shade
cap
shaped shade
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
Application number
JP2000343734A
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Japanese (ja)
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JP2002150861A (en
Inventor
滋 内山
兼春 後藤
重紀 岡田
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.)
Tokyo Electric Power Co Inc
Takaoka Electric Mfg Co Ltd
Original Assignee
Tokyo Electric Power Co Inc
Takaoka Electric Mfg Co Ltd
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 Tokyo Electric Power Co Inc, Takaoka Electric Mfg Co Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP2000343734A priority Critical patent/JP4530386B2/en
Priority to KR1020010067322A priority patent/KR20020036700A/en
Publication of JP2002150861A publication Critical patent/JP2002150861A/en
Application granted granted Critical
Publication of JP4530386B2 publication Critical patent/JP4530386B2/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B17/00—Insulators or insulating bodies characterised by their form
    • H01B17/56—Insulating bodies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/28—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances natural or synthetic rubbers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
    • H01B3/00—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties
    • H01B3/18—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances
    • H01B3/30—Insulators or insulating bodies characterised by the insulating materials; Selection of materials for their insulating or dielectric properties mainly consisting of organic substances plastics; resins; waxes

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  • Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Insulators (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、電力機器の送電線に用いられる高分子製がいしに関するものである。
【０００２】
【従来の技術】
図２に従来の高分子製がいしの一例を示す。
両端に金属製の金具１が取り付けられたＦＲＰ棒２の周りにはゴムの被覆３及びゴムで形成された鍔状の笠４が形成されている。そしてこのゴムで形成された鍔状の笠４の内側には同じくゴムで形成されたカップ形の笠５が取り付けられている。
ここでカップ形とは、開口部の内径に対して開口部入り口から内側の底までの長さ（深さ）の比が１以上あり、かつ側面に一部直線部分を有する形状のことをここでは定義する。
カップ形の笠５の前にあるゴムで成形された鍔状の笠４は、カップ形の笠５の口より雨水が入りにくくするための役割もある。これにより、雨天時においても、カップ形の笠５の外側は雨により濡れるが、内側は濡れにくく、乾いた部分を形成しやすい。このため雨天時においても漏洩電流が流れにくく、結果として信頼性のある高電圧用のがいしを提供する事が可能である。
【０００３】
図３は従来の高分子製がいしの他の例を示す。
両端に金属製の金具１が取り付けられたＦＲＰ棒２の周りにはゴムの被覆３及びゴムで形成されたカップ形の笠５が取り付けられている。そしてこのカップ形の笠５の内側には同じくゴムで形成された鍔状の笠４が取り付けられている。
この構造においても図１と同様の働きを示し、雨天時においても、カップ形の笠の外側は雨により濡れるが、内側は濡れにくく、乾いた部分を形成しやすい。このため雨天時においても漏洩電流が流れにくく、結果として信頼性のある高電圧用のがいしを提供する事が出来る。
【０００４】
【発明が解決しようとする課題】
しかしながら、上記従来構造でゴム成形する場合、カップ形の笠５の前にゴムで成形された鍔状の笠４を取り付けた構造となっているため、成型後成型品を取り出し、カップ形の笠５の中に入れてある成型用の中子を取り出すことができず、このため一体成形する事はできなかった。このため、この形状を成形するには、始めに鍔状の笠４とＦＲＰ棒２の被覆３部分を一体成形する。次に、カップ形状の笠５を別に成形する。そしてこのカップ形状の笠５をゴム被覆３の上に取り付け接着剤などで固定する。
【０００５】
このように、この上記従来構造でゴムを成形する場合すべて同時に一体成形する事が出来なかった。このため、成形を２段階に分けて行い、又更に接着工程があるため製造コストが高く、又接着部分の長期信頼性にも問題があった。
【０００６】
【課題を解決するための手段】
ゴムで成形された笠にであってお椀形形状を有し、このお椀形形状を有する笠に対して蓋をする方向に鍔状のゴム笠を形成する。ここでお椀形形状とは、断面について内側がR形状を有し、かつ外側に膨らんだ構造を示す。
【０００７】
【発明の実施の形態】
図１に本発明の実施の形態の一例を示す。
両端に金属製の金具１がかしめ圧着により取り付けられたＦＲＰ棒２に所定の厚さを有するゴム被覆３を形成する。そしてこのゴム被覆３の金具側にはゴムで形成されたお椀形形状の笠６が形成されている。ここで、このゴムで形成されたお椀形形状の笠６の開口部の方向は金具１とは反対方向に向いている。そして、お椀形形状の笠６の開口部方向に鍔状の笠４が形成されている。また、このゴムで形成されたお椀形形状の笠６と鍔状の笠４の位置関係は、お椀形形状の笠６に対してちょうど蓋をする方向に鍔状の笠４が構成されている。
【０００８】
本発明の高分子製がいしを成形する時、成形前にお椀形形状の笠６の内側に当たる部分に、型成形用の中子を取り付ける。そして成形後、製品を金型から取り出し、お椀形形状の笠６内に入れてある中子を取り出すとき、この中子は２分割されており、この中子を取り出す場合、内側にある鍔状の笠４はゴム製であるために容易に曲げることができる。このため、成形後この中子を取り出す場合、この半割れ中子を、中子の分割部間で軸方向に相対する平面にあって、お椀形形状の笠６の開口部平面の中心点を通る笠部開口部直径方向の直線を、回転の中心として、９０°回転することが出来、これにより中子を簡単に取り出すことが可能である。
【０００９】
【発明の効果】
この構造において、雨天時においても、お椀形形状の笠の外側は雨により濡れるが、内側にはお椀形形状の前にある鍔状の笠によりふたの役目がなされているため、雨水がお椀形形状の内側に入りにくく、乾いた部分を形成しやすい。このため雨天時においても漏洩電流が流れにくく、結果として信頼性のある高電圧用のがいしを提供する事が出来る。
また成形においても、シリコーンゴムで成形する場合、すべて同時に一体成形する事が出来る。このため、これまでのように成形を２段階に分けて行い、又更に笠を接着するための接着工程を行う必要がないため、製造コストが安く、また従来問題になっていた接着部分における長期信頼性にも問題がない高分子製がいしを提供することが可能である。
【図面の簡単な説明】
【図１】本発明の高分子製がいしの実施の形態の一例を示した図である。
【図２】従来の高分子製がいしの一例を示した図である。
【図３】従来の高分子製がいしの他の例を示した図である。
【符号の説明】
１ 金具
２ ＦＲＰ棒
３ ゴム被覆
４ 鍔状の笠
５ カップ形状の笠
６ お椀形形状の笠[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a polymer insulator used for a power transmission line of electric power equipment.
[0002]
[Prior art]
FIG. 2 shows an example of a conventional polymer insulator.
Around the FRP rod 2 to which metal fittings 1 are attached at both ends, a rubber cover 3 and a bowl-shaped shade 4 made of rubber are formed. A cup-shaped shade 5 made of rubber is attached to the inside of the bowl-shaped shade 4 made of rubber.
Here, the cup shape is a shape in which the ratio of the length (depth) from the opening entrance to the inner bottom with respect to the inner diameter of the opening is 1 or more and a part of the side surface has a straight portion. Let's define it.
The cocoon-shaped shade 4 formed of rubber in front of the cup-shaped shade 5 also has a role for making it difficult for rainwater to enter from the mouth of the cup-shaped shade 5. Thereby, even when it rains, the outside of the cup-shaped shade 5 gets wet by rain, but the inside is hard to get wet, and a dry part is easily formed. Therefore, it is difficult for leakage current to flow even in rainy weather, and as a result, it is possible to provide a reliable insulator for high voltage.
[0003]
FIG. 3 shows another example of a conventional polymer insulator.
A rubber cover 3 and a cup-shaped shade 5 made of rubber are attached around an FRP bar 2 having metal fittings 1 attached to both ends. Inside the cup-shaped shade 5 is attached a bowl-shaped shade 4 that is also formed of rubber.
This structure also functions in the same manner as in FIG. 1, and even when it rains, the outside of the cup-shaped shade is wet by rain, but the inside is hard to get wet, and a dry part is easily formed. For this reason, leakage current hardly flows even in rainy weather, and as a result, a reliable insulator for high voltage can be provided.
[0004]
[Problems to be solved by the invention]
However, in the case of rubber molding with the above-described conventional structure, the cup-shaped shade 4 is attached in front of the cup-shaped shade 5 so that the molded product is taken out after molding and the cup-shaped shade 4 is taken out. The molding core contained in 5 could not be taken out, so that it could not be integrally molded. For this reason, in order to mold this shape, first, the bowl-shaped shade 4 and the covering 3 portion of the FRP rod 2 are molded integrally. Next, the cup-shaped shade 5 is formed separately. The cup-shaped shade 5 is attached onto the rubber coating 3 and fixed with an adhesive or the like.
[0005]
Thus, when rubber was molded with this conventional structure, it was not possible to mold all at the same time. For this reason, the molding is performed in two stages, and there is a problem in the long-term reliability of the bonded portion because the manufacturing process is high due to the bonding process.
[0006]
[Means for Solving the Problems]
It is a shade formed of rubber and has a bowl shape, and a bowl shaped rubber shade is formed in a direction to cover the shade having the bowl shape. Here, the bowl shape indicates a structure having an R shape on the inner side and a bulging outer side.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
FIG. 1 shows an example of an embodiment of the present invention.
A rubber coating 3 having a predetermined thickness is formed on an FRP rod 2 to which metal fittings 1 are attached by crimping and pressing at both ends. A bowl-shaped shade 6 made of rubber is formed on the metal side of the rubber cover 3. Here, the direction of the opening of the bowl-shaped shade 6 formed of rubber is directed in the opposite direction to the metal fitting 1. A bowl-shaped shade 4 is formed in the direction of the opening of the bowl-shaped shade 6. In addition, the positional relationship between the bowl-shaped shade 6 and the bowl-shaped shade 4 formed of rubber is such that the bowl-shaped shade 4 is configured in a direction to cover the bowl-shaped shade 6. .
[0008]
When the polymer insulator according to the present invention is molded, a core for molding is attached to a portion that hits the inside of the bowl-shaped shade 6 before molding. After molding, when the product is taken out from the mold and the core placed in the bowl-shaped shade 6 is taken out, the core is divided into two parts. Since the cap 4 is made of rubber, it can be bent easily. For this reason, when this core is taken out after molding, this half-cracked core is in a plane facing the axial direction between the split portions of the core, and the center point of the opening plane of the bowl-shaped shade 6 is The straight line in the diameter direction of the cap portion opening passing therethrough can be rotated by 90 ° with the rotation center as a center , whereby the core can be easily taken out.
[0009]
【The invention's effect】
In this structure, even when it rains, the outside of the bowl-shaped shade is wetted by rain, but the inside has a lid-like function with the bowl-shaped shade in front of the bowl-shaped shape. It is difficult to enter the inside of the shape, and it is easy to form a dry part. For this reason, leakage current hardly flows even in rainy weather, and as a result, a reliable insulator for high voltage can be provided.
Also, in the case of molding with silicone rubber, all can be integrally molded at the same time. For this reason, it is not necessary to carry out the molding in two steps as before, and further, it is not necessary to carry out a bonding process for bonding the cap, so that the manufacturing cost is low and the long-term bonding portion that has been a problem in the past is long. It is possible to provide a polymer insulator with no problem in reliability.
[Brief description of the drawings]
FIG. 1 is a diagram showing an example of an embodiment of a polymer insulator according to the present invention.
FIG. 2 is a view showing an example of a conventional polymer insulator.
FIG. 3 is a view showing another example of a conventional polymer insulator.
[Explanation of symbols]
1 Bracket 2 FRP rod 3 Rubber coating 4 Hook-shaped shade 5 Cup-shaped shade 6 Bowl-shaped shade

Claims (1)

ゴムで成形された笠について断面がR形状で、かつ外側に膨らんだお椀形形状を有し、このお椀形形状を有する笠の開口部に対向して蓋をする方向に鍔状のゴム笠を形成した高分子製がいしについて笠部とこれに対向する鍔状のゴム笠を一体して成形し、成形時には笠部の内側に型成形用の２分割半割れ中子を取り付け、成形後前記中子を、中子の分割部間で軸方向に相対する平面にあって、笠部開口部平面の中心点を通る笠部開口部直径方向の直線を、回転の中心として９０°回転し、鍔状のゴム笠を曲げて取り出すことによって製造する高分子製がいしの製造方法。 About the shade formed with rubber, the cross section is R-shaped and has a bowl shape that bulges outward, and a bowl-shaped rubber shade is placed in the direction to cover the opening of the shade having the bowl shape. The formed polymer insulator is molded integrally with a cap and a bowl-shaped rubber cap facing it. At the time of molding, a half split core for molding is attached inside the cap, The core is in a plane opposite to the axial direction between the split portions of the core, and the straight line in the diameter direction of the cap opening that passes through the center point of the cap opening plane is rotated 90 ° as the center of rotation. A method of manufacturing a polymer insulator manufactured by bending and removing a rubber cap.
JP2000343734A 2000-11-10 2000-11-10 Polymer insulator Expired - Fee Related JP4530386B2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
JP2000343734A JP4530386B2 (en) 2000-11-10 2000-11-10 Polymer insulator
KR1020010067322A KR20020036700A (en) 2000-11-10 2001-10-31 Polymer insulator

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2000343734A JP4530386B2 (en) 2000-11-10 2000-11-10 Polymer insulator

Publications (2)

Publication Number Publication Date
JP2002150861A JP2002150861A (en) 2002-05-24
JP4530386B2 true JP4530386B2 (en) 2010-08-25

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JP2000343734A Expired - Fee Related JP4530386B2 (en) 2000-11-10 2000-11-10 Polymer insulator

Country Status (2)

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KR (1) KR20020036700A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100480343B1 (en) * 2002-12-13 2005-04-06 한국전기연구원 Polymer insulator for improvement in durability
CN105575558A (en) * 2016-01-26 2016-05-11 西安唯实输配电技术有限公司 Long-creepage distance horizontal and inclined cantilever composite insulator for electrified railway and manufacturing method of long-creepage distance horizontal and inclined cantilever composite insulator
CN106847439A (en) * 2017-03-08 2017-06-13 长葛市恒瑞电瓷电器有限公司 A kind of rain-proof porcelain insulator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11299072A (en) * 1998-04-09 1999-10-29 Furukawa Electric Co Ltd:The Isolator with deep groove shade

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6046611U (en) * 1983-09-06 1985-04-02 日本碍子株式会社 composite porcelain insulator
JPS6074414U (en) * 1983-10-28 1985-05-25 東京電力株式会社 line spacer
JPS6074415U (en) * 1983-10-28 1985-05-25 東京電力株式会社 line spacer
JP2000245044A (en) * 1999-02-24 2000-09-08 Ngk Insulators Ltd High-pressure spacer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11299072A (en) * 1998-04-09 1999-10-29 Furukawa Electric Co Ltd:The Isolator with deep groove shade

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KR20020036700A (en) 2002-05-16

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