JPH10322828A - Repair method of compression connection part in existing overhead transmission line and compression type connection pipe used therefor - Google Patents
Repair method of compression connection part in existing overhead transmission line and compression type connection pipe used thereforInfo
- Publication number
- JPH10322828A JPH10322828A JP14332797A JP14332797A JPH10322828A JP H10322828 A JPH10322828 A JP H10322828A JP 14332797 A JP14332797 A JP 14332797A JP 14332797 A JP14332797 A JP 14332797A JP H10322828 A JPH10322828 A JP H10322828A
- Authority
- JP
- Japan
- Prior art keywords
- compression
- wire
- aluminum
- compression type
- sleeve
- 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.)
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Abstract
(57)【要約】
【課題】 既設の架空送電線の圧縮接続部の補修作業を
容易にする。
【解決手段】 既設の架空送電線において，圧縮形ジャ
ンパスリーブや圧縮形直線スリーブや，圧縮形引留クラ
ンプ等による圧縮接続部を補修する際，圧縮形ジャンパ
スリーブや，圧縮形直線スリーブのアルミスリーブや，
圧縮形引留クランプのアルミクランプ等の圧縮形接続管
２５の内径Ｄ1 を，接続しようとする電線（鋼心アルミ
撚線２０）の標準外径ｄより２ｍｍ〜５ｍｍ太径にし，
外径Ｄ2 を圧縮率５〜８％を確保できる外径とする。既
設の圧縮形接続管を新しい圧縮形接続管と交換する際，
古線（既設電線）のアルミ素線の撚りを戻し研磨して酸
化アルミ被膜を除去し再度撚り合わせるが，その際太径
となってしまった古線（既設電線）を容易にかつ確実に
圧縮形接続管に挿入できる。また，圧縮接続部の電気的
性能および引張強度性能も確保できる。
(57) [Summary] [Problem] To facilitate repair work of a compression connection part of an existing overhead transmission line. SOLUTION: When repairing a compression type jumper sleeve, a compression type linear sleeve, or a compression connection part by a compression type retention clamp or the like in an existing overhead transmission line, a compression type jumper sleeve, an aluminum sleeve of a compression type linear sleeve, or the like is used. ,
An inner diameter D 1 of the compression type connection tube 25 of aluminum clamps such compression type anchor clamps, the 2mm~5mm larger diameter than the standard outer diameter d of the wire to be connected (steel core aluminum stranded wire 20),
The outer diameter D 2 and the outer diameter capable of ensuring the compression ratio 5-8%. When replacing an existing compression type connection pipe with a new compression type connection pipe,
The aluminum wire of the old wire (existing electric wire) is untwisted and polished to remove the aluminum oxide film and twisted again. At this time, the old wire (existing electric wire) that has become large in diameter is easily and reliably compressed. It can be inserted into a connection pipe. Also, the electrical performance and tensile strength performance of the compression connection can be ensured.
Description
【０００１】[0001]
【発明の属する技術分野】この発明は，既設の架空送電
線における圧縮形ジャンパスリーブや圧縮形直線スリー
ブや圧縮形引留クランプ等による圧縮接続部を補修する
補修方法，およびこれに用いるアルミスリーブやアルミ
クランプ等の圧縮形接続管に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a repair method for repairing a compression connection portion of an existing overhead transmission line by using a compression type jumper sleeve, a compression type linear sleeve, a compression type retention clamp, etc., and an aluminum sleeve or aluminum used for the method. The present invention relates to a compression connection pipe such as a clamp.
【０００２】[0002]
【従来の技術】架空送電線には一般に鋼心アルミ撚線
（ＡＣＳＲ）が使用されているが，その接続のために，
図１に示す圧縮形ジャンパスリーブや，図２に示す圧縮
形直線スリーブや，図３に示す圧縮形引留クランプ等の
各種の接続装置がそれぞれの使用目的に対応して用いら
れている。これらの接続装置は，以下に説明するよう
に，アルミスリーブやアルミクランプ等のアルミまたは
アルミ合金製の圧縮形接続管を用いる。2. Description of the Related Art Steel core aluminum stranded wires (ACSR) are generally used for overhead power transmission lines.
Various connection devices such as a compression type jumper sleeve shown in FIG. 1, a compression type linear sleeve shown in FIG. 2, and a compression type retaining clamp shown in FIG. 3 are used in accordance with the respective purposes. As described below, these connecting devices use aluminum or aluminum alloy compression type connecting pipes such as aluminum sleeves and aluminum clamps.
【０００３】図５に示すように，鋼心アルミ撚線２０
は，複数の鋼素線２１ａを撚り合わせてなるテンション
メンバとしての鋼心部２１の外周に，複数のアルミ素線
２２ａを撚り合わせたアルミ線部２２を備えた構造であ
る。[0003] As shown in FIG.
Has a structure in which an aluminum wire portion 22 in which a plurality of aluminum wires 22a are twisted is provided on the outer periphery of a steel core portion 21 as a tension member formed by twisting a plurality of steel wires 21a.
【０００４】図１に示す接続装置は，前記鋼心アルミ撚
線２０を用いたジャンパ線の接続に用いる圧縮形ジャン
パスリーブ１である。この場合はアルミまたはアルミ合
金製の筒状の圧縮形ジャンパスリーブ１自体が圧縮形接
続管である。この圧縮形ジャンパスリーブ１は，主とし
て電流経路を確保するためのもので，圧縮形ジャンパス
リーブ１の左右に設けた電線挿入穴１ａに接続しようと
する電線（鋼心アルミ撚線）を挿入した後，六角形状の
圧縮用ダイスにより圧縮形ジャンパスリーブ１の外周か
ら図１（ハ）のように六角形断面に圧縮接続する構造で
ある。図１（ニ）は耐張鉄塔において前記圧縮形ジャン
パスリーブ１でジャンパ線（鋼心アルミ撚線）２の接続
を行った吊架式ジャンパ装置を示す。図１（ニ）におい
て，３は径間の送電線，４は碍子連である。この場合に
おける電気的接続の有効長さは，電流密度を０．１１６
Ａ／ｍｍ2として当該電線の電流容量および等価表面積
により決められている。また，接続強度は，アルミ線の
把持力密度を０．４Ｋｇｆ／ｍｍ2 として当該電線の等
価表面積により決められている。[0004] The connection device shown in FIG. 1 is a compression type jumper sleeve 1 used for connection of a jumper wire using the steel core aluminum stranded wire 20. In this case, the cylindrical compression type jumper sleeve 1 itself made of aluminum or aluminum alloy is the compression type connection pipe. The compression type jumper sleeve 1 is mainly for securing a current path, and after inserting an electric wire (a steel core aluminum stranded wire) to be connected to the electric wire insertion holes 1a provided on the left and right of the compression type jumper sleeve 1. A structure in which a hexagonal compression die is used to compressively connect the outer periphery of the compression type jumper sleeve 1 to a hexagonal cross section as shown in FIG. FIG. 1 (d) shows a suspension type jumper device in which a jumper wire (steel core aluminum stranded wire) 2 is connected by a compression type jumper sleeve 1 in a tension tower. In FIG. 1D, reference numeral 3 denotes a transmission line of a span, and reference numeral 4 denotes a series of insulators. The effective length of the electrical connection in this case is that the current density is 0.116
A / mm 2 is determined by the current capacity and the equivalent surface area of the electric wire. The connection strength is determined by the equivalent surface area of the electric wire, with the holding force density of the aluminum wire being 0.4 kgf / mm 2 .
【０００５】図２に示す接続装置は，同図（ホ）のよう
に前記鋼心アルミ撚線２０を用いた送電線５の径間途中
に設置される圧縮形直線スリーブ６であり，この圧縮形
直線スリーブ６は，図２（イ）に示すように中空部７ａ
を持つアルミまたはアルミ合金製のアルミスリーブ７
と，図２（ハ）に示すように鋼心挿入穴８ａを持つ鋼製
の鋼スリーブ８とからなる。この場合はアルミスリーブ
７が上述の圧縮形接続管に相当する。この圧縮形直線ス
リーブ６は，送電線の径間途中に設置されることから，
電流経路の確保のほか，引っ張り強度を当該電線の強度
の９５％以上を確保する必要があり，鋼心アルミ撚線の
テンションメンバである鋼心部と電流通路であるアルミ
線部との両方の機能を満足させるため，前述の通りアル
ミスリーブ７および鋼スリーブ８の二分割形となってい
る。この圧縮形直線スリーブ６で鋼心アルミ撚線の接続
を行う場合，接続しようとする電線（鋼心アルミ撚線）
５の外周に事前にアルミスリーブ７を被せた後，当該電
線を段剥きして鋼心部を露出させ，鋼スリーブ８の鋼心
挿入穴８ａに当該電線の鋼心部を挿入した後，六角形状
の圧縮用ダイスにより鋼スリーブ８の外周から図２
（ニ）のように六角形断面に圧縮することにより，テン
ションメンバである鋼心部どうしの接続を行う。その
後，事前に電線外周に被せているアルミスリーブ７を圧
縮接続部におけるアルミ線部に移動させた後，アルミス
リーブ７の外周から六角形状の圧縮用ダイスにより図
（ロ）のように六角形断面に圧縮して接続することによ
り，電流経路を確保する。この場合の圧縮接続による電
流密度およびアルミ線の把持力密度は前述の圧縮形ジャ
ンパスリーブ１の場合と同一であるが，鋼線の把持力密
度として２．０ｋｇｆ／ｍｍ2 という値が使用されてい
る。The connecting device shown in FIG. 2 is a compression type linear sleeve 6 installed in the middle of the transmission line 5 using the steel core aluminum stranded wire 20 as shown in FIG. The straight sleeve 6 has a hollow portion 7a as shown in FIG.
Aluminum sleeve 7 made of aluminum or aluminum alloy
And a steel sleeve 8 having a steel core insertion hole 8a as shown in FIG. In this case, the aluminum sleeve 7 corresponds to the above-mentioned compression connection pipe. Since this compression type straight sleeve 6 is installed in the middle of the span of the transmission line,
In addition to securing the current path, it is necessary to secure a tensile strength of 95% or more of the strength of the electric wire. Both the steel core, which is the tension member for the aluminum core stranded wire, and the aluminum wire, which is the current path, are required. In order to satisfy the function, the aluminum sleeve 7 and the steel sleeve 8 are divided into two as described above. When connecting a steel core aluminum stranded wire with this compression type straight sleeve 6, the electric wire to be connected (steel core aluminum stranded wire)
5 is covered with an aluminum sleeve 7 in advance, the electric wire is stepped off to expose the steel core, and the steel core of the electric wire is inserted into the steel core insertion hole 8a of the steel sleeve 8, and then the hexagonal hexagon is inserted. 2 from the outer periphery of the steel sleeve 8 by the compression die having the shape shown in FIG.
By connecting the steel cores as tension members by compressing them into a hexagonal cross section as shown in (d). Then, after the aluminum sleeve 7 covering the outer periphery of the electric wire is moved to the aluminum wire portion in the compression connection part in advance, the hexagonal cross section is formed from the outer periphery of the aluminum sleeve 7 with a hexagonal compression die as shown in FIG. The current path is secured by compressing and connecting. In this case, the current density due to the compression connection and the gripping force density of the aluminum wire are the same as in the case of the compression type jumper sleeve 1 described above, but a value of 2.0 kgf / mm 2 is used as the gripping force density of the steel wire. I have.
【０００６】図３に示す接続装置は，前記鋼心アルミ撚
線２０を用いた送電線の引き留めに使用する圧縮形引留
クランプ１０であり，アルミクランプ１１と鋼クランプ
１２とからなる。この場合はアルミクランプ１１が上述
の圧縮形接続管に相当する。この圧縮形引留クランプ１
０は，前述の圧縮形直線スリーブ６と同様に電流経路の
確保および当該電線の強度の９５％以上を確保する必要
があり，鋼心アルミ撚線のテンションメンバである鋼心
部と電流通路であるアルミ線部との両方の機能を満足さ
せるため，アルミクランプ１１および鋼クランプ１２の
二分割形となっている。この圧縮形引留クランプ１０
は，鋼心アルミ撚線を段剥きし，露出させた鋼心部を鋼
クランプ１２のスリーブ部の鋼心挿入穴１２ａに挿入し
圧縮接続した上，鋼クランプ１２にアルミクランプ１１
を被せ，次いで，アルミ線の張力の引き留めおよび電流
通路を確保するためにアルミクランプ１１のスリーブ部
１１ａを圧縮するとともに，鋼クランプ１２の波部１２
ｂをアルミクランプ１１と圧縮により一体化することに
より，鋼心アルミ撚線の引き留めが達成される構造とな
っている。図３（ハ）にアルミクランプ１１の圧縮前の
断面形状，同図（ニ）に同圧縮後の断面形状を示す。ま
た，同図（ホ）に鋼クランプ１２の圧縮前の断面形状，
同図（ヘ）に同圧縮後の断面形状を示す。なお，１３は
ジャンパソケットである。この場合の圧縮接続による電
流密度，アルミ線および鋼線の把持力密度は，圧縮形直
線スリーブの場合と同一となっている。The connecting device shown in FIG. 3 is a compression type clamp 10 used for retaining a transmission line using the above-mentioned steel core aluminum stranded wire 20 and comprises an aluminum clamp 11 and a steel clamp 12. In this case, the aluminum clamp 11 corresponds to the above-mentioned compression connection pipe. This compression type clamp 1
0 indicates that it is necessary to secure a current path and to secure 95% or more of the strength of the electric wire in the same manner as in the above-mentioned compression type linear sleeve 6. In order to satisfy both functions with a certain aluminum wire part, the aluminum clamp 11 and the steel clamp 12 are divided into two parts. This compression type clamp 10
Is a method in which a steel core aluminum stranded wire is stepped off, an exposed steel core is inserted into a steel core insertion hole 12a of a sleeve portion of a steel clamp 12, compression-connected, and an aluminum clamp 11 is attached to the steel clamp 12.
Then, the sleeve portion 11a of the aluminum clamp 11 is compressed to secure the tension of the aluminum wire and secure a current path, and the corrugated portion 12
By integrating b with the aluminum clamp 11 by compression, the steel core aluminum stranded wire is retained. FIG. 3C shows a sectional shape of the aluminum clamp 11 before compression, and FIG. 3D shows a sectional shape after compression. FIG. 4E shows the sectional shape of the steel clamp 12 before compression.
FIG. 6F shows a cross-sectional shape after the compression. Reference numeral 13 denotes a jumper socket. In this case, the current density by the compression connection and the gripping force density of the aluminum wire and the steel wire are the same as those of the compression type linear sleeve.
【０００７】これらの接続装置の設計において，圧縮さ
れる圧縮形ジャンパスリーブ１やアルミスリーブ７やア
ルミクランプ１１等の圧縮形接続管の外形，内径は，接
続しようとする当該電線（鋼心アルミ撚線）に対して一
定の圧縮率を確保できることが前提となっており，圧縮
率を５〜８％とすることにより，圧縮した後の圧縮接続
部の電流経路の確保および引っ張り強度の確保を実現し
ている。前記圧縮率は，次の通り表される。 Ｃｐ＝｛（（Ａａ＋Ａｗ）−Ｃ）／（Ａａ＋Ａｗ）｝×１００（％） … ただし，Ｃｐ：圧縮率（％） Ａａ：圧縮形接続管の計算断面積（ｍｍ2 ） Ａｗ：当該電線の計算断面積（ｍｍ2 ） Ｃ ：圧縮後の計算断面積（ｍｍ2 ） なお，六角形状の圧縮用ダイスの対角寸法は一般に，圧
縮後のバリを少なくするため，圧縮形接続管の外形と合
致させている。また，従来の圧縮形接続管の内径は，施
工時の電線挿入が容易であるように，挿入される当該電
線の標準外径に対し１ｍｍ〜２ｍｍ太径にしてあり，こ
の状態において圧縮接続した場合に，所定の上記圧縮率
が確保される構造となっている。In the design of these connecting devices, the outer shape and inner diameter of the compression type connection pipe such as the compression type jumper sleeve 1, the aluminum sleeve 7, and the aluminum clamp 11 to be compressed are determined by the electric wire (steel core aluminum twisted) to be connected. It is assumed that a certain compression ratio can be secured for the wire), and by setting the compression ratio to 5 to 8%, it is possible to secure the current path and the tensile strength of the compression connection after compression. doing. The compression ratio is expressed as follows. Cp = {((Aa + Aw) -C) / (Aa + Aw)} × 100 (%) where Cp: compression ratio (%) Aa: calculated cross-sectional area of compression-type connecting pipe (mm 2 ) Aw: calculation of the electric wire Cross-sectional area (mm 2 ) C: Calculated cross-sectional area after compression (mm 2 ) The diagonal dimensions of the hexagonal compression dies generally match the external shape of the compression-type connecting pipe to reduce burrs after compression. Let me. In addition, the inner diameter of the conventional compression type connection pipe is set to be 1 mm to 2 mm larger than the standard outer diameter of the wire to be inserted so that the wire can be easily inserted at the time of construction. In such a case, the structure is such that the predetermined compression ratio is secured.
【０００８】[0008]
【発明が解決しようとする課題】ところで，長年にわた
り運用されてきた架空送電線における圧縮接続部におい
て，所定の電流を通電させた場合に圧縮接続部が設計値
を越えて過熱している事態が近年発生している。この過
熱した不具合な圧縮形接続管を新しいものと交換する場
合，現場において当該圧縮形接続管の口元先端で既設電
線を切断した上，新しい圧縮形接続管を長年運用してき
た既設電線（古線）に圧縮接続することになるが，古線
は外層・内層ともアルミ素線の表面が電気絶縁物である
強固な酸化アルミ被膜により覆われており，この状態で
圧縮形接続管を圧縮接続した場合には，所定の電流通路
を確保できず，再度過熱することは明白である。したが
って，古線を圧縮接続する場合は，当該電線のアルミ線
の全表面を必要圧縮長さまで研磨しすべての酸化アルミ
被膜を除去した上で，新しい圧縮形接続管により圧縮接
続を行うことが必要条件となる。Incidentally, in a compression connection portion of an overhead transmission line which has been operated for many years, when a predetermined current is applied, the compression connection portion may exceed a designed value and overheat. This has occurred recently. When replacing the overheated defective compression-type connection pipe with a new one, cut off the existing electric wire at the end of the compression-type connection pipe at the site, and then replace the existing electric wire (old wire) that has been operating the new compression-type connection pipe for many years. In the old wire, the outer and inner layers of the aluminum wire are covered with a strong aluminum oxide coating, which is an electrical insulator, and the compression connection pipe was compression-connected in this state. In such a case, it is obvious that the predetermined current path cannot be secured and the overheating is performed again. Therefore, when connecting an old wire by compression, it is necessary to grind the entire surface of the aluminum wire of the wire to the required compression length, remove all aluminum oxide coatings, and then make a compression connection using a new compression connection pipe. Condition.
【０００９】当該電線のアルミ線の全表面を研磨するた
めには，構成するアルミ素線を１本ずつ研磨する必要が
あるが，そのためには，当該電線の切断部の近傍におけ
るアルミ素線の撚りを，研磨作業をできる程度まで外層
および内層にわたって戻し，その後ワイヤブラシまたは
ショットブラストによりアルミ素線を１本づつ研磨する
ことが必要である。そして，このような酸化アルミ被膜
除去作業を，架空送電線が架設されている碍子連先端近
傍または径間途中で実施する場合は，室内で丹念に作業
できる場合と異なり足場等の作業環境が悪いことから，
アルミ素線に過度の変形が発生し易くなり，研磨後に再
度アルミ素線を撚り合わせた時には，当該電線の撚り合
わせ後の外径が撚り戻し前に比べて１ｍｍ〜３ｍｍ程度
大きくなることは避けられない。In order to polish the entire surface of the aluminum wire of the electric wire, it is necessary to polish the constituent aluminum wires one by one. For this purpose, the aluminum wires in the vicinity of the cut portion of the electric wire are required. It is necessary to return the twist over the outer layer and the inner layer to the extent that the grinding operation can be performed, and then grind the aluminum strands one by one with a wire brush or shot blast. When such an aluminum oxide film removal work is performed near the end of the insulator on which the overhead power transmission line is installed or in the middle of the span, the work environment such as the scaffolding is poor unlike the case where the work can be carefully performed indoors. From that,
Excessive deformation of the aluminum wire is likely to occur, and when the aluminum wire is twisted again after polishing, the outer diameter of the wire after twisting should not be about 1 mm to 3 mm larger than before untwisting. I can't.
【００１０】このような太径となった当該電線に通常通
りの設計の新しい圧縮形接続管を圧縮接続しようとする
場合，最初から当該電線を圧縮形接続管内に挿入できる
ことはあまりなく，通常は，アルミ素線の撚り合わせの
やり直しや，変形したアルミ素線の矯正等の作業が必要
となり，場合によっては，当該電線の挿入不足のまま圧
縮接続されることになる。このような事情は，特に送電
線路の停電を伴う作業の場合，作業時間の制約があるこ
とから重大な欠点となる。[0010] When trying to compression-connect a new compression-type connecting pipe of a normal design to such a large-diameter wire, it is rare that the wire can be inserted into the compression-type connecting pipe from the beginning. Therefore, operations such as re-twisting the aluminum wires and straightening of the deformed aluminum wires are required, and in some cases, the wires are compressed and connected with insufficient insertion. Such a situation is a serious drawback, especially in the case of work involving a power outage of the transmission line, due to the limitation of the working time.
【００１１】本発明は上記従来の欠点を解消するために
なされたもので，既設の架空送電線の圧縮形接続管を新
しい圧縮形接続管と交換する圧縮接続部補修を行う場合
に，酸化アルミ被膜の除去処理に伴って太径となった古
線（既設電線）を新しい圧縮形接続管に容易にかつ確実
に圧縮接続できるとともに，圧縮接続部の電気的性能お
よび引張強度性能も確保できる架空送電線における圧縮
接続部の補修方法，およびこの補修方法に用いる圧縮形
接続管を提供することを目的とする。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional drawbacks, and is intended for repairing a compression connection part for replacing a compression connection pipe of an existing overhead transmission line with a new compression connection pipe. An aerial wire that can easily and reliably connect the old wire (existing electric wire), whose diameter has become large due to the removal of the coating, to the new compression-type connection pipe, and at the same time, ensure the electrical performance and tensile strength performance of the compression connection. An object of the present invention is to provide a method for repairing a compression connection part in a transmission line and a compression type connection pipe used in the repair method.
【００１２】[0012]
【課題を解決するための手段】上記課題を解決する請求
項１の発明は，アルミまたはアルミ合金からなる圧縮形
接続管を電線の外周に被せ圧縮接続してなる圧縮接続部
を補修する既設架空送電線における圧縮接続部の補修方
法であって，既設の架空送電線における前記圧縮形接続
管の口元先端で当該電線を切断し，当該電線の切断部近
傍のアルミ素線の撚りを戻し，各アルミ素線を研磨した
後再度撚り合わせ，この撚り合わせた電線端部を，当該
電線の標準外径より２ｍｍ〜５ｍｍ太径の内径と圧縮率
５〜８％を確保できる外径とを持つ新しい圧縮形接続管
に挿入し圧縮接続することを特徴とする。According to a first aspect of the present invention, there is provided an existing aerial for repairing a compression connection portion formed by covering a compression type connecting pipe made of aluminum or an aluminum alloy on the outer periphery of an electric wire and compressing and connecting. A method of repairing a compression connection part of a transmission line, comprising cutting the electric wire at the end of the mouth of the compression type connection pipe of an existing overhead transmission line, untwisting the aluminum wire near the cut part of the electric wire, The aluminum wire is polished and twisted again. The twisted wire end has a new inner diameter of 2mm to 5mm larger than the standard outer diameter of the wire and an outer diameter that can secure a compressibility of 5 to 8%. It is characterized in that it is inserted into a compression type connection pipe and connected by compression.
【００１３】請求項２は，請求項１の既設架空送電線に
おける圧縮接続部の補修方法に用いる圧縮形接続管であ
って，接続しようとする電線の標準外径より２ｍｍ〜５
ｍｍ太径の内径と，圧縮率５〜８％を確保できる外径と
を持つことを特徴とする。A second aspect of the present invention relates to a compression type connection pipe used for repairing a compression connection portion of an existing overhead transmission line according to the first aspect of the present invention, wherein the standard outer diameter of the wire to be connected is 2 mm to 5 mm.
It has an inner diameter of a large diameter of mm and an outer diameter capable of securing a compression ratio of 5 to 8%.
【００１４】[0014]
【発明の実施の形態】以下，本発明の実施の形態を図面
を参照して説明する。本発明の既設架空送電線における
圧縮接続部の補修方法は，既設の架空送電線における図
１に示した圧縮形ジャンパスリーブ１，図２に示した圧
縮形直線スリーブ６，図３に示した圧縮形引留クランプ
１０等の接続装置による圧縮接続部に適用される。前述
の通り，図１の圧縮形ジャンパスリーブ１はそれ自体が
圧縮形接続管であり，図２の圧縮形直線スリーブ６にお
いてはジャンパスリーブ７が圧縮形接続管であり，図３
の圧縮形引留クランプ１０においてはアルミクランプ１
１が圧縮形接続管である。Embodiments of the present invention will be described below with reference to the drawings. The method for repairing the compression connection part of the existing overhead transmission line according to the present invention includes the compression type jumper sleeve 1 shown in FIG. 1, the compression type linear sleeve 6 shown in FIG. The present invention is applied to a compression connection portion by a connection device such as a shape retention clamp 10. As described above, the compression-type jumper sleeve 1 of FIG. 1 is a compression-type connection pipe itself, the jumper sleeve 7 of the compression-type linear sleeve 6 of FIG. 2 is a compression-type connection pipe, and FIG.
Aluminum clamp 1
1 is a compression connection pipe.
【００１５】本発明では，これらの圧縮形接続管の内径
を，接続しようとする当該電線の標準外径より２ｍｍ〜
５ｍｍ太径とし，外径を圧縮率５〜８％を確保できる外
径とする。すなわち，図４において，接続しようとする
電線２０（図２のジャンパ線２，図３の径間の架空送電
線５等の鋼心アルミ撚線）の標準外径をｄ，圧縮形接続
管２５（前述の圧縮形ジャンパスリーブ１，アルミスリ
ーブ７，アルミクランプ１１等）の内径をＤ1 ，外径を
Ｄ2 とすると，圧縮形接続管２５の内径Ｄ1 を Ｄ1 ＝ｄ＋α（α＝２〜５）ｍｍ とする。そして，圧縮形接続管２５の外径Ｄ2 は，圧縮
率５〜８％を確保できる外径とする。すなわち，図４
（イ）の円形断面の圧縮形接続管２５を圧縮用ダイスに
より図４（ロ）の六角形断面に圧縮した時，前述の式
で計算される圧縮率Ｃｐが Ｃｐ＝５〜８％ となるような寸法とする。According to the present invention, the inner diameter of these compression type connection pipes is set to be 2 mm or more larger than the standard outer diameter of the wire to be connected.
The diameter is set to 5 mm and the outer diameter is set to an outer diameter that can secure a compression ratio of 5 to 8%. That is, in FIG. 4, the standard outer diameter of the electric wire 20 to be connected (the jumper wire 2 in FIG. 2, the steel core aluminum stranded wire such as the overhead transmission line 5 in FIG. Assuming that the inside diameter of the compression type jumper sleeve 1, the aluminum sleeve 7, the aluminum clamp 11, etc. is D 1 and the outside diameter is D 2 , the inside diameter D 1 of the compression connection pipe 25 is D 1 = d + α (α = 2 ５5) mm 2. Then, the outer diameter D 2 of the compression-type connecting pipe 25, and an outer diameter that can secure 5-8% compressibility. That is, FIG.
When the compression-type connecting pipe 25 having a circular cross section (a) is compressed into a hexagonal cross section of FIG. 4 (b) by a compression die, the compression ratio Cp calculated by the above equation becomes Cp = 5 to 8%. The dimensions are as follows.
【００１６】なお，圧縮形接続管２５を圧縮する圧縮用
ダイスは，当該圧縮形接続管２５の外径Ｄ2 と同等な正
六角形とするが，圧縮形接続管２５の外径を抑制すると
同時に５〜８％という所定の圧縮率を確保するために，
当該圧縮形接続管２５の外径Ｄ2 と同一対角寸法を有し
かつ対辺寸法を縮めた扁平六角形ダイスを使用すること
も有効である。The compression die for compressing the compression-type connecting pipe 25 has a regular hexagonal shape equivalent to the outer diameter D 2 of the compression-type connecting pipe 25. In order to secure the specified compression ratio of 5-8%,
It is also effective to use an outer diameter D 2 have identical pairs angle dimensions and flat hexagon dice shorten the opposite side size of the compressed shaped connecting pipe 25.
【００１７】補修に用いる圧縮形接続管２５の材質は従
来と同様であり，圧縮形ジャンパスリーブ１の場合はア
ルミ管またはアルミ棒，圧縮形直線スリーブ６のアルミ
スリーブ７の場合はアルミまたはアルミ合金の管または
棒，圧縮形引留クランプ１０のアルミクランプ１１の場
合はアルミまたはアルミ合金の管または棒もしくは電気
用アルミ鋳物が好ましい。なお，圧縮形直線スリーブ６
の鋼スリーブ８，および圧縮形引留クランプ１０の鋼ク
ランプ１２は通常軟鋼を用いる。The material of the compression type connection pipe 25 used for the repair is the same as that of the conventional one. The compression type jumper sleeve 1 is an aluminum tube or an aluminum rod, and the compression type straight sleeve 6 is an aluminum sleeve 7 is aluminum or an aluminum alloy. In the case of the aluminum clamp 11 of the compression type retaining clamp 10, a tube or rod of aluminum or an aluminum alloy or an aluminum casting for electricity is preferable. The compression type linear sleeve 6
The steel sleeve 8 and the steel clamp 12 of the compression type clamp 10 are usually made of mild steel.
【００１８】上記の圧縮形接続管２５を用いて，既設の
架空送電線における過熱した不具合な圧縮接続部を補修
する場合，まず，既設の架空送電線における圧縮形接続
管（圧縮形ジャンパスリーブ１，圧縮形直線スリーブ
７，圧縮形引留クランプ１１等）の口元先端で当該電線
を切断し，当該電線の切断部近傍のアルミ素線の撚りを
戻し，各アルミ素線を研磨して酸化アルミ被膜を除去し
た後再度撚り合わせ，この撚り合わせた電線端部を，前
述のように電線の標準外径ｄより２ｍｍ〜５ｍｍ太径の
内径Ｄ1 と，圧縮率５〜８％を確保できる外径Ｄ2 とを
持つ新しい圧縮形接続管２５に挿入し圧縮接続する。な
お，本発明の補修方法の手順自体は，前述した従来の手
順と同様であり，詳細手順の再度の説明は省略するが，
上記の通り，使用する圧縮形接続管２５が従来の圧縮形
接続管とは異なる。When repairing an overheated defective connection in an existing overhead transmission line using the above-mentioned compression connection tube 25, first, the compression connection tube (compression type jumper sleeve 1) in the existing overhead transmission line is repaired. , Compression type linear sleeve 7, compression type retention clamp 11, etc.), cut the electric wire at the tip, untwist the aluminum wires near the cut part of the electric wire, grind each aluminum wire, and grind the aluminum oxide film the combined again twisted after removal, the outer diameter of the electric wire end portion to match the twist to the inner diameter D 1 of the 2mm~5mm larger diameter than the standard outer diameter d of the wire as described above, the compression ratio 5-8% can be ensured inserted into a new compressed form connecting pipe 25 having a D 2 was compressed connection. The procedure of the repair method of the present invention is the same as the conventional procedure described above, and the detailed procedure is not described again.
As described above, the compression type connection pipe 25 used is different from the conventional compression type connection pipe.
【００１９】上記のようにアルミ素線の撚りを戻し研磨
した後再度撚り合わせた時には，通常，当該電線の撚り
合わせの外径が撚り戻し前に比べて１ｍｍ〜３ｍｍ程度
大きくなっているが，新しい圧縮形接続管２５の内径Ｄ
1 は電線の標準外径ｄより２ｍｍ〜５ｍｍ太径であるか
ら，若干太径になった古線でも容易に挿入することがで
き，アルミ素線の撚り合わせのやり直しや，変形したア
ルミ素線の矯正等の作業等が必要となることはない。し
たがって，特に作業時間に制約のある，送電線路の停電
を伴う作業の場合にきわめて有効である。また，当該電
線の圧縮形接続管への挿入長さが不足した状態のまま圧
縮接続される恐れもなく，確実な圧縮接続が行われる。
そして，圧縮形接続管２５の外径Ｄ2 は圧縮率５〜８％
を確保できる外径であるから，圧縮接続部の電気的性能
および引張強度性能を損なうおそれもない。As described above, when the strand of the aluminum wire is untwisted, polished and then twisted again, the outer diameter of the twisted wire is usually about 1 mm to 3 mm larger than before untwisting. Inner diameter D of new compression connection tube 25
1 is 2mm to 5mm thicker than the standard outer diameter d of the electric wire, so it is easy to insert even a slightly thicker old wire, re-twisting the aluminum wire, or deforming the aluminum wire. There is no need for work such as straightening. Therefore, it is extremely effective especially in the case of work involving a power outage of a transmission line, where the work time is limited. In addition, there is no possibility that the wire is inserted into the compression-type connecting pipe in a state where the length of the wire is short, and the compression connection is reliably performed.
The outer diameter D 2 of the compression type connection pipe 25 is 5 to 8%.
Since the outer diameter can secure the electrical connection, the electrical performance and the tensile strength performance of the compression connection portion are not impaired.
【００２０】なお，本発明の圧縮形接続管は，圧縮形ジ
ャンパスリーブ，圧縮形直線スリーブ，圧縮形引留クラ
ンプに限らず，架空送電線路において，電線の外周に被
せ圧縮接続されるアルミまたはアルミ合金製の種々の圧
縮形接続管に適用できる。また，本発明の圧縮形接続管
は，少なくともアルミ撚線部を持つ電線を対象とする
が，必ずしも鋼心アルミ撚線に限定されない。The compression-type connecting pipe of the present invention is not limited to a compression-type jumper sleeve, a compression-type linear sleeve, and a compression-type anchoring clamp. It can be applied to various compression-type connection pipes made of. Further, the compression type connection pipe of the present invention is intended for an electric wire having at least an aluminum stranded wire, but is not necessarily limited to a steel core aluminum stranded wire.
【００２１】[0021]
【発明の効果】本発明によれば，既設の架空送電線の圧
縮形接続管を新しい圧縮形接続管と交換する圧縮接続部
の補修を行う際，圧縮形接続管の内径Ｄ1 が接続しよう
とする当該電線の標準外径ｄより２ｍｍ〜５ｍｍ太径で
あるから，酸化アルミ被膜の除去処理に伴って太径とな
った古線（既設電線）を新しい圧縮形接続管に容易に挿
入することができ，したがって，圧縮接続作業が著しく
容易になる。また，太径となった古線を圧縮形接続管に
挿入不足のまま圧縮接続する等の不確実な圧縮接続作業
をなくすことができる。しかも，圧縮形接続管の外径Ｄ
2 は圧縮率５〜８％を確保できる外径であるから，圧縮
接続部の電気的性能および引張強度性能も確保すること
ができる。According to the present invention, when performing repairs compression joint unit to replace the compressed form connecting pipe of the existing overhead power transmission lines and new compressed form connecting pipe, the inner diameter D 1 of the compression type connection tube tries to connect Since the diameter is 2 mm to 5 mm larger than the standard outer diameter d of the wire, the old wire (existing wire) having a larger diameter due to the removal of the aluminum oxide film can be easily inserted into a new compression connection pipe. Therefore, the compression connection operation is greatly facilitated. In addition, it is possible to eliminate an unreliable compression connection operation such as a compression connection of an old wire having a large diameter inserted into a compression connection pipe with insufficient insertion. In addition, the outer diameter D of the compression connection pipe
Since 2 is an outer diameter that can secure a compression ratio of 5 to 8%, the electrical performance and tensile strength performance of the compression connection can also be secured.
【図１】本発明の一つの実施の形態を示すもので，
（イ）は圧縮形ジャンパスリーブの正面図，（ロ）は同
右側面図，（ハ）は同圧縮後の断面形状を示す図，
（ニ）はこの圧縮形ジャンパスリーブでジャンパ線の接
続を行ったジャンパ装置の図である。FIG. 1 illustrates one embodiment of the present invention.
(A) is a front view of the compression type jumper sleeve, (b) is a right side view of the same, (c) is a view showing a cross-sectional shape after the compression,
(D) is a view of a jumper device in which jumper wires are connected by the compression type jumper sleeve.
【図２】本発明の他の実施の形態を示すもので，（イ）
は圧縮形直線スリーブにおけるアルミスリーブの正面
図，（ロ）は（イ）のアルミスリーブの圧縮後の断面形
状を示す図，（ハ）は圧縮形直線スリーブにおける鋼ク
ランプの正面図，（ニ）は（ハ）の鋼クランプの圧縮後
の断面形状を示す図，（ホ）は径間途中に上記の圧縮形
直線スリーブが配置された架空送電線を説明する図であ
る。FIG. 2 shows another embodiment of the present invention.
Is a front view of an aluminum sleeve in a compression type linear sleeve, (b) is a view showing a cross-sectional shape of the aluminum sleeve in (a) after compression, (c) is a front view of a steel clamp in a compression type linear sleeve, (d) (C) is a diagram showing a cross-sectional shape of the steel clamp after compression, and (E) is a diagram illustrating an overhead transmission line in which the above-mentioned compression-type linear sleeve is arranged in the middle of the span.
【図３】本発明のさらに他の実施の形態を示すもので，
（イ）は圧縮形引留クランプの正面図，（ロ）は右側面
図，（ハ）は（イ）の圧縮形引留クランプにおけるアル
ミクランプの圧縮前の断面形状を示す図，（ニ）は同圧
縮後の断面形状を示す図，（ホ）は（イ）の圧縮形引留
クランプにおける鋼クランプの圧縮前の断面形状を示す
図，（ヘ）は同圧縮後の断面形状を示す図である。FIG. 3 shows still another embodiment of the present invention.
(A) is a front view of the compression type clamping clamp, (b) is a right side view, (c) is a diagram showing the cross-sectional shape of the aluminum clamp in the compression type clamping clamp (a) before compression, and (d) is the same. FIG. 5E is a diagram showing a cross-sectional shape after compression, (E) is a diagram showing a cross-sectional shape before compression of a steel clamp in the compression type retention clamp of (A), and (F) is a diagram showing a cross-sectional shape after compression.
【図４】本発明の圧縮形接続管の断面についての寸法関
係を説明するための図であり，（イ）は圧縮前の断面形
状，（ロ）は圧縮後の断面形状の図である。4A and 4B are diagrams for explaining the dimensional relationship of the cross section of the compression-type connecting pipe of the present invention, wherein FIG. 4A is a cross-sectional shape before compression, and FIG. 4B is a diagram of a cross-sectional shape after compression.
【図５】本発明が対象とする鋼心アルミ撚線の一例を示
す断面図である。FIG. 5 is a sectional view showing an example of a steel core aluminum stranded wire to which the present invention is applied.
１ 圧縮形ジャンパスリーブ（圧縮形接続管） ２ ジャンパ線（鋼心アルミ撚線） ５ 送電線（鋼心アルミ撚線） ６ 圧縮形直線スリーブ ７ アルミスリーブ（圧縮形接続管） ７ａ 中空部 ８ 鋼スリーブ ８ａ 鋼心挿入穴 １０ 圧縮形引留クランプ １１ アルミクランプ（圧縮形接続管） １２ 鋼クランプ ２０ 鋼心アルミ撚線 ２１ 鋼心部 ２１ａ 鋼素線 ２２ アルミ線部 ２２ａ アルミ素線 ２５ 圧縮形接続管 ｄ 電線の標準外径 Ｄ1 圧縮形接続管の内径 Ｄ2 圧縮形接続管の外径Reference Signs List 1 compression type jumper sleeve (compression type connection pipe) 2 jumper wire (steel core aluminum stranded wire) 5 power transmission line (steel core aluminum stranded wire) 6 compression type linear sleeve 7 aluminum sleeve (compression type connection pipe) 7a hollow part 8 steel Sleeve 8a Steel core insertion hole 10 Compression type retention clamp 11 Aluminum clamp (compression type connection pipe) 12 Steel clamp 20 Steel core aluminum stranded wire 21 Steel core part 21a Steel wire 22 Aluminum wire part 22a Aluminum wire 25 Compression connection pipe d Standard outer diameter of electric wire D 1 Inner diameter of compression type connection pipe D 2 Outer diameter of compression type connection pipe
Claims (2)
接続管を電線の外周に被せ圧縮接続してなる圧縮接続部
を補修する既設架空送電線における圧縮接続部の補修方
法であって，既設の架空送電線における前記圧縮形接続
管の口元先端で当該電線を切断し，当該電線の切断部近
傍のアルミ素線の撚りを戻し，各アルミ素線を研磨した
後再度撚り合わせ，この撚り合わせた電線端部を，当該
電線の標準外径より２ｍｍ〜５ｍｍ太径の内径と圧縮率
５〜８％を確保できる外径とを持つ新しい圧縮形接続管
に挿入し圧縮接続することを特徴とする既設架空送電線
における圧縮接続部の補修方法。1. A method for repairing a compression connection portion of an existing overhead transmission line for repairing a compression connection portion formed by covering a periphery of an electric wire with a compression connection tube made of aluminum or an aluminum alloy. The wire is cut at the end of the compression-type connection pipe of the transmission line, the twist of the aluminum wire near the cut portion of the wire is returned, each aluminum wire is polished, and then twisted again, and the twisted wire is twisted again. The end is inserted into a new compression-type connecting pipe having an inner diameter of 2 mm to 5 mm larger than the standard outer diameter of the wire and an outer diameter capable of securing a compressibility of 5 to 8%, and is connected by compression. Repair method of compression connection part in overhead transmission line.
接続部の補修方法に用いる圧縮形接続管であって，接続
しようとする電線の標準外径より２ｍｍ〜５ｍｍ太径の
内径と，圧縮率５〜８％を確保できる外径とを持つこと
を特徴とする圧縮形接続管。2. A compression connection pipe used in the method for repairing a compression connection portion of an existing overhead transmission line according to claim 1, wherein the inner diameter is 2 mm to 5 mm larger than the standard outer diameter of the wire to be connected. A compression type connection pipe having an outer diameter capable of securing a rate of 5 to 8%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14332797A JPH10322828A (en) | 1997-05-16 | 1997-05-16 | Repair method of compression connection part in existing overhead transmission line and compression type connection pipe used therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14332797A JPH10322828A (en) | 1997-05-16 | 1997-05-16 | Repair method of compression connection part in existing overhead transmission line and compression type connection pipe used therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH10322828A true JPH10322828A (en) | 1998-12-04 |
Family
ID=15336214
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14332797A Pending JPH10322828A (en) | 1997-05-16 | 1997-05-16 | Repair method of compression connection part in existing overhead transmission line and compression type connection pipe used therefor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH10322828A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006286385A (en) * | 2005-03-31 | 2006-10-19 | Asahi Electric Works Ltd | Crimped connection structure of terminal fitting and stranded wire |
| US8202131B2 (en) | 2009-10-21 | 2012-06-19 | Sicame Australia Pty Ltd | Power line coupler |
| JP2014147185A (en) * | 2013-01-28 | 2014-08-14 | Chugoku Electric Power Co Inc:The | Repair sleeve |
| KR101531013B1 (en) * | 2014-03-06 | 2015-06-24 | 한국전기연구원 | Manufacturing method of overhead conductors using soft aluminum wire with surface hardening treatment and overhead conductors manufactured by the same |
| KR101531012B1 (en) * | 2014-03-06 | 2015-06-24 | 한국전기연구원 | Method of surface hardening treatment for overhead conductors and overhead conductors manufactured by the same |
| JP2015195661A (en) * | 2014-03-31 | 2015-11-05 | 株式会社ビスキャス | Support structure of overhead transmission line, and clamp |
| US9240649B2 (en) | 2009-10-21 | 2016-01-19 | Sicame Austrailia Pty Ltd | Power line coupler |
| CN109861132A (en) * | 2018-12-26 | 2019-06-07 | 国网福建省电力有限公司宁德供电公司 | Overhead line repair tools and working methods |
-
1997
- 1997-05-16 JP JP14332797A patent/JPH10322828A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006286385A (en) * | 2005-03-31 | 2006-10-19 | Asahi Electric Works Ltd | Crimped connection structure of terminal fitting and stranded wire |
| US8202131B2 (en) | 2009-10-21 | 2012-06-19 | Sicame Australia Pty Ltd | Power line coupler |
| US9240649B2 (en) | 2009-10-21 | 2016-01-19 | Sicame Austrailia Pty Ltd | Power line coupler |
| JP2014147185A (en) * | 2013-01-28 | 2014-08-14 | Chugoku Electric Power Co Inc:The | Repair sleeve |
| KR101531013B1 (en) * | 2014-03-06 | 2015-06-24 | 한국전기연구원 | Manufacturing method of overhead conductors using soft aluminum wire with surface hardening treatment and overhead conductors manufactured by the same |
| KR101531012B1 (en) * | 2014-03-06 | 2015-06-24 | 한국전기연구원 | Method of surface hardening treatment for overhead conductors and overhead conductors manufactured by the same |
| JP2015195661A (en) * | 2014-03-31 | 2015-11-05 | 株式会社ビスキャス | Support structure of overhead transmission line, and clamp |
| CN109861132A (en) * | 2018-12-26 | 2019-06-07 | 国网福建省电力有限公司宁德供电公司 | Overhead line repair tools and working methods |
| CN109861132B (en) * | 2018-12-26 | 2024-03-08 | 国网福建省电力有限公司宁德供电公司 | Overhead line repair tools and working methods |
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