JPH11136829A - Repair cover for through hole in insulating coat of aerial insulated distribution line - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a repair cover for through holes in the insulating coat of an aerial insulated distribution line which makes it possible to fill insulating putty up to the insides of the through holes of the insulating coat with good workability. SOLUTION: A repair cover for through holes in the insulating coat of an aerial insulated distribution line can be formed into a cylindrical shape, by uniting one longitudinal direction brim part 2, 2' of each halved hollow case 1, 1' in such a way as to be bendable freely and joining the halved hollow cases 1, 1' by putting the halved hollow cases 1, 1' between the other longitudinal-direction brim parts 3, 3' and pushing them against each other mechanically. And partitions 4, 4' are provided at an interval in the internal walls at both ends of the halved hollow cases 1, 1', and adhesive insulating rubber sheets 5 of a specified thickness are applied to the internal walls of the halved hollow cases 1, 1' between the partitions 4, 4', and each halved hollow case 1, 1' between the internal positions 4' is filled with a specified quantity of insulating putty 6 having a fluidity.

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【発明の属する技術分野】この発明は、架空絶縁配電線
路の活線工事において、バイパス回路を作るために、無
停電工事用機材の一種である針電極式クランプの針電極
を、活線状態の架空絶縁配電線に突き刺し、絶縁被覆を
突き破った際に生じる絶縁被覆貫通孔を修復するための
修復カバ−に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a live-line construction of an overhead insulated distribution line, in which a needle electrode of a needle electrode type clamp, which is a kind of uninterruptible construction equipment, is used to make a bypass circuit. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repair cover for repairing a through-hole of an insulation coating which is generated when the overhead insulation insulation wire is pierced and breaks through the insulation coating.

【０００２】[0002]

【従来の技術】従来、前記絶縁被覆貫通孔の修復に
は、絶縁被覆貫通孔に絶縁融着ゴムテ−プを巻付けて修
復する方法、ブチルゴム系の粘着性絶縁コンパウンド
を充填したプラスチック製の半割り筒状体を絶縁被覆貫
通孔の上に押し当てる方法、ブチルゴム系の粘着性絶
縁コンパウンドを充填したプラスチック製の半割り筒状
体を絶縁被覆貫通孔の上下から押し当てる方法などが知
られているが、の方法はヤットコなどの間接活線工具
を使用する作業にとっては、作業性が著しくわるく不向
きであるという欠点があった。及びの方法は作業性
はよいが、ブチルゴム系の粘着性絶縁コンパウンドを押
圧しても、粘性があるために、小さい絶縁被覆貫通孔の
中まで入り込まない、すなわち絶縁被覆貫通孔がボイド
として残存するので、雨天時などでは、ボイド放電が発
生し、絶縁体の局部的劣化を引き起こしたり、雨水など
が侵入して、導体の応力腐食断線事故を引き起こすおそ
れがあるという欠点があった。2. Description of the Related Art Conventionally, a method of repairing the insulating coating through hole by winding an insulating fused rubber tape around the insulating coating through hole, a method of repairing a plastic half filled with a butyl rubber-based adhesive insulating compound. There are known methods of pressing the split cylindrical body over the insulating coating through-hole, and pressing the plastic half-split cylindrical body filled with butyl rubber-based adhesive insulating compound from above and below the insulating coating through-hole. However, this method has a disadvantage that workability is extremely poor and unsuitable for work using an indirect live tool such as Yatco. Although the method of and is good in workability, even if the butyl rubber-based adhesive insulating compound is pressed, because of its viscosity, it does not enter into the small insulating coating through-hole, that is, the insulating coating through-hole remains as a void. Therefore, in the case of rainy weather or the like, void discharge is generated, which may cause local deterioration of the insulator or rainwater or the like, which may cause a stress corrosion breakage of the conductor.

【０００３】[0003]

【この発明が解決しようとする課題】この発明は、従来
の技術で記述した欠点を解決するためになされたもの
で、作業性がよく、かつ絶縁被覆貫通孔の中まで絶縁パ
テを充填させることができる架空絶縁配電線の絶縁被覆
貫通孔の修復カバ−の提供を目的とするものである。SUMMARY OF THE INVENTION The present invention has been made to solve the drawbacks described in the prior art, and has good workability and is intended to fill an insulating putty into an insulating coating through hole. It is an object of the present invention to provide a cover for repairing an insulating coating through-hole of an overhead insulated distribution line.

【０００４】[0004]

【課題を解決するための手段】この発明の架空絶縁配電
線の絶縁被覆貫通孔の修復カバ−は、半割り中空ケ−ス
の長手方向の一方の縁部を屈曲自在に連結し、前記半割
り中空ケ−スの長手方向の他方の縁部を機械的に挟みつ
けると、前記半割り中空ケ−スが結合され、筒状に成形
でき、前記半割り中空ケ−スの両端の内壁部に、間隔を
置いて、仕切を設け、前記仕切間に位置する前記半割り
中空ケ−スの内壁部に、所定厚さの粘着性絶縁ゴムシ−
トを貼り付け、前記内側の仕切間に位置する前記半割り
中空ケ−スに、流動性を有する所定量の絶縁パテを充填
していることを特徴とするものである。According to the present invention, there is provided a repair cover for an insulation-coated through-hole of an overhead insulated distribution line, wherein one half of a half-hollow case in the longitudinal direction is flexibly connected to the half-hollow case. When the other edge portion in the longitudinal direction of the split hollow case is mechanically sandwiched, the half split hollow case is joined and can be formed into a cylindrical shape, and inner wall portions at both ends of the half split hollow case are formed. Partitions are provided at intervals, and an adhesive insulating rubber sheet of a predetermined thickness is provided on the inner wall of the half-hollow case located between the partitions.
And a predetermined amount of insulating putty having fluidity is filled in the half-split hollow case located between the inner partitions.

【０００５】[0005]

【発明の実施の形態】この発明の実施の形態の一例を示
す図面について説明すると、図１〜図３に示すように、
ポリエチレンなどのプラスチックからなる半割り中空ケ
−ス１、１’の長手方向の一方の縁部２、２’を屈曲自
在に橋絡し、半割り中空ケ−ス１、１’の長手方向の他
方の縁部３に雌ホック７、縁部３’に雌ホック７と嵌合
する雄ホック７’を設け、縁部３、３’を、図示しない
間接活線工具のヤットコで機械的に挟みつけると、半割
り中空ケ−ス１、１’は結合し、筒状に成形できるよう
になっている。DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings showing an embodiment of the present invention, as shown in FIGS.
One edge 2, 2 'in the longitudinal direction of the half-hollow case 1, 1' made of plastic such as polyethylene is flexibly bridged to form a half-hollow case 1, 1 'in the longitudinal direction. A female hook 7 is provided at the other edge 3 and a male hook 7 'is provided at the edge 3' to be fitted with the female hook 7, and the edges 3, 3 'are mechanically sandwiched between the indirect live tool (not shown). Once attached, the half-split hollow cases 1, 1 'are joined together and can be formed into a cylindrical shape.

【０００６】半割り中空ケ−ス１、１’の両端の内壁部
に、間隔を置いて、例えば、先端部に切れ目を入れた仕
切４、４’を設け、仕切４、４’間に位置する半割り中
空ケ−ス１、１’の内壁部に、所定厚さのブチルゴム系
の粘着性絶縁ゴムシ−ト５を貼り付け、仕切４’間に位
置する半割り中空ケ−ス１、１’に、例えば、肌に塗る
クリ−ムのようにさらっとした粘着性のない、流動性を
有する、例えば、シリコ−ン系の絶縁パテ６を所定量充
填している。[0006] Partitions 4 and 4 'are provided at the inner wall portions at both ends of the half-split hollow casings 1 and 1' at intervals, for example, with cuts at the tips, and are located between the partitions 4 and 4 '. A butyl rubber-based adhesive insulating rubber sheet 5 having a predetermined thickness is adhered to the inner wall portions of the half-hollow cases 1, 1 'to be formed, and the half-hollow cases 1, 1 located between the partitions 4'. Is filled with a predetermined amount of a silicone-based insulating putty 6 having a fluidity and a non-sticky property such as cream applied to the skin.

【０００７】前記所定厚さとは、図４に示すように、絶
縁被覆貫通孔８を有する架空絶縁配電線９を装着し、半
割り中空ケ−ス１、１’を機械的に結合させたとき、架
空絶縁配電線９の外表面にブチルゴム系の粘着性絶縁ゴ
ムシ−ト５が密接する厚さである。また、前記所定量と
は、絶縁被覆貫通孔８を有する架空絶縁配電線９を装着
し、半割り中空ケ−ス１、１’を機械的に結合させたと
き、結合時の押圧力によって、絶縁パテ６が、中空ケ−
ス１、１’内部と架空絶縁配電線９間と絶縁被覆貫通孔
８の中に充填できる量である。なお、図１〜図３におい
て、１０はヤットコなどの間接工具で把持するためのつ
まみである。As shown in FIG. 4, the predetermined thickness is defined when an overhead insulated distribution line 9 having an insulating coating through hole 8 is mounted and the half-split hollow cases 1, 1 'are mechanically connected. The thickness is such that the butyl rubber-based adhesive insulating rubber sheet 5 is in close contact with the outer surface of the overhead insulated distribution line 9. The predetermined amount is determined by the pressing force at the time of mounting the overhead insulated distribution line 9 having the insulating coating through hole 8 and mechanically connecting the half-split hollow cases 1 and 1 ′. When the insulating putty 6 is a hollow case
1 and 1 ', the space between the overhead insulated distribution line 9, and the insulating coating through hole 8. 1 to 3, reference numeral 10 denotes a knob for gripping with an indirect tool such as a jawco.

【０００８】本願の半割り中空ケ−ス１、１’に、従来
広く使用されているブチルゴム系の粘着性絶縁コンパウ
ンドと、本願の粘着性がないシリコ−ン系の絶縁パテ６
を所定量充填した修復カバ−に、絶縁被覆貫通孔８を設
けた６６００Ｖ架空絶縁配電線９を装着した試験試料各
２０個を作成し、修復カバ−を水中に沈め、水と６６０
０Ｖ架空絶縁配電線９の導体間にＡＣ１５ＫＶを１分間
印荷したのち、２ＫＶ／５分の割合で、破壊まで昇圧さ
せた結果、従来のブチルゴム系の粘着性絶縁コンパウン
ドを使用した試料は全て１５ＫＶ、１分以内に絶縁破壊
を起こしたが、本願の粘着性がないシリコ−ン系の絶縁
パテ６を使用したものは、全てＡＣ１５ＫＶ、１分間に
耐え、その破壊電圧は２３〜３１ＫＶであった。The halved hollow casings 1 and 1 'of the present application are provided with a butyl rubber-based adhesive insulating compound and a non-adhesive silicone-based insulating putty 6 of the present invention.
20 test samples each having a 6600V overhead insulated distribution line 9 provided with an insulating coating through hole 8 were prepared in a repair cover filled with a predetermined amount of, and the repair cover was submerged in water.
After applying AC15KV for 1 minute between the conductors of the 0V overhead insulated distribution line 9, the pressure was increased to the destruction at a rate of 2KV / 5min. As a result, all the samples using the conventional butyl rubber-based adhesive insulating compound were 15KV. The dielectric breakdown occurred within 1 minute, but all the samples using the non-sticky silicone-based insulating putty 6 withstood AC 15 KV for 1 minute and the breakdown voltage was 23 to 31 KV. .

【０００９】なお、出願人が行なった数多くの実験か
ら、従来広く使用されている粘着性絶縁コンパンドを使
用した場合における耐電圧特性が低いのは、合せ面が完
全に一体になりにくいこと、絶縁被覆貫通孔８に粘着性
絶縁コンパンドが入り込みにくいことが主な原因である
ことが分かった。しかし、粘着性絶縁コンパンドの使用
が従来の常識であったために、これが盲点となり、改良
を阻害する要因になっていた。[0009] According to a number of experiments conducted by the applicant, the low withstand voltage characteristics in the case of using an adhesive insulating compound which has been widely used in the past are that the mating surface is difficult to be completely integrated, and that the insulating property is low. It was found that the main reason was that it was difficult for the adhesive insulating compound to enter the coating through hole 8. However, since the use of the adhesive insulating compound was a common sense in the past, this became a blind spot and was a factor hindering improvement.

【００１０】[0010]

【発明の効果】この発明は上述のように構成されている
ので、次のような効果を呈する。 流動性を有する絶縁パテは合せ目ができず、かつ絶縁
被覆貫通孔の中に入り込むので、耐電圧特性が向上し、
絶縁被覆貫通孔から雨水が内部に侵入することがなく、
導体の応力腐食断線事故を防止できる。 両端に装着している粘着性絶縁ゴムシ−トは架空絶縁
配電線に密接しているので、修復カバ−の横ずれを防止
できるとともに、雨水の侵入及び絶縁パテの流出を防止
することができる。 絶縁パテが流動性を有しているので、半割り中空ケ−
スの間接工具による装着が容易であり、作業性が向上す
る。Since the present invention is configured as described above, it has the following effects. Since the insulating putty having fluidity cannot be joined, and penetrates into the insulating coating through-hole, withstand voltage characteristics are improved,
Rainwater does not enter inside through the insulation coating through hole,
The conductor can be prevented from being broken by stress corrosion. Since the adhesive insulating rubber sheets attached to both ends are in close contact with the overhead insulated distribution line, it is possible to prevent lateral displacement of the restoration cover, as well as to prevent rainwater from entering and the insulating putty from flowing out. Since the insulating putty has fluidity, the half-split hollow casing
It is easy to install with an indirect tool, and workability is improved.

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

【図１】この発明の実施例を示す平面図FIG. 1 is a plan view showing an embodiment of the present invention.

【図２】図１における側面図FIG. 2 is a side view of FIG.

【図３】半割りケ−スを閉じたときの概略側面図FIG. 3 is a schematic side view when the half-split case is closed.

【図４】架空絶縁配電線を装着した修復カバ−の横断面
図FIG. 4 is a cross-sectional view of a repair cover equipped with an overhead insulated distribution line.

【符号の説明】[Explanation of symbols]

１、１’半割り中空ケ−ス ２、２’半割り中空ケ−スの長手方向の一方の縁部 ３、３’半割り中空ケ−スの長手方向の他方の縁部 ４、４’仕切り ５ 粘着性絶縁ゴムシ−ト ６ 流動性を有する絶縁パテ ７ 雌ホック ７’雄ホック ８ 絶縁被覆貫通孔 ９ 架空絶縁配電線 １０ つまみ 1, 1 'half-hollow case 2, one edge in the longitudinal direction of 2' half-hollow case 3, 3 'the other edge in the longitudinal direction of half-hollow case 4, 4' Partition 5 Adhesive insulating rubber sheet 6 Fluid insulating putty 7 Female hook 7 'male hook 8 Insulation coating through hole 9 Overhead insulated distribution line 10 Knob

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 半割り中空ケ−ス（１、１’）の長手
方向の一方の縁部（２、２’）が屈曲自在に連結されて
いること、 前記半割り中空ケ−ス（１、１’）の長手方向の他方
の縁部（３、３’）を機械的に挟みつけると、前記半割
り中空ケ−ス（１、１’）が結合され、筒状に成形でき
ること、 前記半割り中空ケ−ス（１、１’）の両端の内壁部に
は、間隔を置いて、仕切（４、４’）を設けているこ
と、 前記仕切（４、４’）間に位置する前記半割り中空ケ
−ス（１、１’）の内壁部に、所定厚さの粘着性絶縁ゴ
ムシ−ト（５）を貼り付けていること、 前記仕切（４’）間に位置する前記半割り中空ケ−ス
（１、１’）に、流動性を有する所定量の絶縁パテ
（６）を充填していること、を特徴とする架空絶縁配電
線の絶縁被覆貫通孔の修復カバ−1. One half edge (2, 2 ′) of a half hollow case (1, 1 ′) in the longitudinal direction is flexibly connected to the half hollow case (1, 1 ′). When the other edge (3, 3 ') in the longitudinal direction of (1') is mechanically sandwiched, the half-split hollow case (1, 1 ') is joined and can be formed into a cylindrical shape. Partitions (4, 4 ') are provided at intervals on the inner walls at both ends of the half-hollow case (1, 1'), located between the partitions (4, 4 '). An adhesive insulating rubber sheet (5) having a predetermined thickness is adhered to an inner wall portion of the half-hollow case (1, 1 '), and the half located between the partitions (4'). A repair cover for an insulation-coated through hole of an overhead insulated distribution line, characterized in that a predetermined amount of insulating putty (6) having fluidity is filled in the split hollow case (1, 1 ').