JP2000350349A - Power cable connection method - Google Patents
Power cable connection methodInfo
- Publication number
- JP2000350349A JP2000350349A JP11155862A JP15586299A JP2000350349A JP 2000350349 A JP2000350349 A JP 2000350349A JP 11155862 A JP11155862 A JP 11155862A JP 15586299 A JP15586299 A JP 15586299A JP 2000350349 A JP2000350349 A JP 2000350349A
- Authority
- JP
- Japan
- Prior art keywords
- conductor
- cable
- reinforcing insulator
- hole
- connector
- 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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Links
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- Cable Accessories (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、サイズの異なる電
力ケーブルの中間接続部の形成装置に関し、特に、プレ
モールド補強絶縁体内部で、導体サイズの異なるケーブ
ルを容易に接続できるようにする装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for forming an intermediate connection between power cables of different sizes, and more particularly to an apparatus for easily connecting cables of different conductor sizes inside a pre-molded reinforcing insulator. .
【０００２】[0002]
【従来の技術】ＣＶケーブル等のようなゴム・プラスチ
ック電力ケーブルを用いて、地下の高圧送電線路を構築
するに際しては、マンホール等からケーブルを洞道に搬
入し、中間接続部を形成する作業を行っている。前記中
間接続部を形成するためには、例えば、特開平９−１１
７０２９号公報等に示されるように、あらかじめ工場等
で作成した樹脂製のプレモールド絶縁体を用いることが
提案されている。前記従来例においては、プレモールド
絶縁体をケーブル導体接続部に位置決めしてから、外部
から加熱と加圧を行うことにより、押出し成形の場合と
同様に一体化することができる。2. Description of the Related Art When constructing an underground high-voltage power transmission line using a rubber / plastic power cable such as a CV cable or the like, it is necessary to carry the cable from a manhole or the like into a tunnel to form an intermediate connection portion. Is going. In order to form the intermediate connection portion, for example, Japanese Patent Application Laid-Open No. 9-11 / 1990
As shown in Japanese Patent No. 7029 and the like, it has been proposed to use a resin-made pre-mold insulator prepared in advance at a factory or the like. In the conventional example, the pre-molded insulator is positioned at the cable conductor connection portion, and then externally heated and pressurized, so that the pre-molded insulator can be integrated as in the case of extrusion molding.
【０００３】前述したようにして作成するプレハブ接続
部は、図３に示すように構成されているもので、前記プ
レハブ接続部１０を形成するために、図４（Ａ）〜
（Ｃ）および図５（Ａ）〜（Ｂ）に示すような工程を経
て形成される。前記図３に示すプレハブ接続部１０にお
いて、接続する２本のケーブル１、１ａは、先端部に導
体２、２ａをそれぞれ所定の長さだけ露出させるととも
に、ケーブル絶縁体３、ケーブル外部半導電層４、およ
び遮蔽層５等をそれぞれ所定の長さに亘って露出させる
ように処理している。そして、前記ケーブル導体２、２
ａの先端部に、導体接続子７、７ａをそれぞれ固定して
取り付け、さらに、前記導体接続子の先端部には、２つ
の導体接続子を直接接続する接続具８、８ａを各々取り
付ける。したがって、前記動作により、前記導体接続子
を導体接触子１３の部分を介して位置決めするととも
に、電気的な導通を設定している。[0003] The prefabricated connecting portion formed as described above is configured as shown in FIG. 3. In order to form the prefabricated connecting portion 10, FIGS.
5C and the steps shown in FIGS. 5A and 5B. In the prefabricated connecting portion 10 shown in FIG. 3, the two cables 1 and 1a to be connected are such that the conductors 2 and 2a are respectively exposed at their distal ends by a predetermined length, and the cable insulator 3 and the cable outer semiconductive layer. 4, and the shielding layer 5 and the like are exposed to a predetermined length. And the cable conductors 2, 2
Conductor connectors 7 and 7a are fixedly attached to the distal end of a, respectively, and connectors 8 and 8a for directly connecting two conductor connectors are attached to the distal end of the conductor connector. Therefore, by the above operation, the conductor connector is positioned via the conductor contact 13 and the electrical conduction is set.
【０００４】前記ケーブル接続部に対応する絶縁体とし
て、前記接続部の外周部には、ゴム・プラスチック製の
補強絶縁体１１を配置するが、例えば、未架橋のポリエ
チレン製の筒状の部材として補強絶縁体を構成し、前記
導体接続子を接続する部分に対応させて、中央部の内部
に導体接触子１３と高圧シールド電極１２とを配置す
る。前記補強絶縁体１１は中央部が円筒状で、両端部が
次第に先細りのテーパ状に形成されているもので、円筒
の断面の中心部を貫通する孔を設けて、その貫通孔の両
側からケーブルを挿入して位置決めさせる。As an insulator corresponding to the cable connecting portion, a reinforcing insulator 11 made of rubber or plastic is arranged on an outer peripheral portion of the connecting portion. For example, as an uncrosslinked polyethylene tubular member, A reinforcing insulator is formed, and a conductor contact 13 and a high-voltage shield electrode 12 are arranged inside a central portion corresponding to a portion where the conductor connector is connected. The reinforcing insulator 11 has a cylindrical shape at the center and has tapered tapered ends at both ends. A hole is formed through the center of the cross section of the cylinder, and a cable is inserted from both sides of the through hole. Insert and position.
【０００５】前記補強絶縁体１１により構成されるプレ
ハブ接続部１０においては、前記プレハブ型の補強絶縁
体１１の周囲に外部半導電層１４を形成し、前記外部半
導電層１４は、ケーブルの外部半導電層４に接続してい
る。また、前記保護管１６と補強絶縁体１１の間の空間
に防水混和物１５を充填し、前記保護管１６の中央部に
は絶縁筒１７を配置し、保護管１６の両端部では、ケー
ブル外装６との間に防水層１９、１９ａをそれぞれ配置
して、プレハブ接続部１０の内部に対する防水処理を行
っている。さらに、前記プレハブ接続部１０の中央部の
外周部には、絶縁筒１７を配置するとともに、保護管１
６には任意の間隔で端子座１８……を配置して、アース
に接続する手段を構成している。[0005] In the prefabricated connecting portion 10 constituted by the reinforcing insulator 11, an outer semiconductive layer 14 is formed around the prefabricated reinforcing insulator 11, and the outer semiconductive layer 14 is provided outside the cable. It is connected to the semiconductive layer 4. Further, a space between the protective tube 16 and the reinforcing insulator 11 is filled with the waterproof mixture 15, an insulating tube 17 is disposed at the center of the protective tube 16, and a cable sheath is provided at both ends of the protective tube 16. The waterproof layers 19 and 19a are disposed between the prefabricated connection portion 6 and the inside of the prefabricated connection portion 10, respectively. Further, an insulating tube 17 is disposed on the outer peripheral portion at the center of the prefabricated connecting portion 10 and the protective tube 1 is provided.
6, terminal seats 18 are arranged at arbitrary intervals to constitute a means for connecting to a ground.
【０００６】前記プレハブ接続部１０を形成するに際し
て、ケーブルの端部に対する処理作業の順序と、補強絶
縁体１１を介して導体接続部を形成し、前記接続部を補
強絶縁体と一体化させる作業を、図４、５にもとづいて
説明する。まず、図４（Ａ）に示すように、ケーブル１
の端部の曲りを修正して、真っ直ぐな状態に成形してか
ら、コルゲート外装６を除去して外部遮蔽層５を露出さ
せ、さらに、ケーブル絶縁体３とケーブル外部半導電層
４とをそれぞれ所定の長さだけ露出させるように、各部
材を剥ぎ取る作業を行う。次いで、同図（Ｂ）に示すよ
うに、ケーブル導体２を所定の長さだけ露出させるよう
に絶縁体３を剥ぎ取り、前記絶縁体３の端部を導体に向
けてテーパ状に成形する作業を行う。[0006] In forming the prefabricated connection portion 10, the order of the processing operation on the end of the cable, the operation of forming the conductor connection portion via the reinforcement insulator 11, and integrating the connection portion with the reinforcement insulator. Will be described with reference to FIGS. First, as shown in FIG.
After correcting the bending of the end of the cable and forming it into a straight state, the corrugated sheath 6 is removed to expose the outer shielding layer 5, and the cable insulator 3 and the cable outer semiconductive layer 4 are respectively An operation of stripping each member is performed so as to expose a predetermined length. Next, as shown in FIG. 2B, the insulator 3 is stripped so as to expose the cable conductor 2 by a predetermined length, and the end of the insulator 3 is tapered toward the conductor. I do.
【０００７】その後で、同図（Ｃ）に示すように、接続
する２本のケーブル１、１ａの導体２、２ａに対して、
導体接続子７、７ａをそれぞれ取り付けるが、前記導体
接続子に設けた孔に導体を挿入して、周囲から圧力を加
えて押し潰す状態で導体接続子とケーブル導体を圧縮す
る。そして、前記導体接続子７、７ａを導体２、２ａに
対してそれぞれ固定してから、導体接続子の表面の突部
を削り取って円筒形に修正して、補強絶縁体１１の内部
に収容できる状態にする。また、前記導体接続子７、７
ａの各々の先端部には、接続具８、８ａを装着して、導
体接続子７、７ａを突き合わせた状態で、接続具を介し
て導体接続子を接続することができるようにする。Thereafter, as shown in FIG. 1C, the conductors 2 and 2a of the two cables 1 and 1a to be connected are
The conductor connectors 7 and 7a are attached, respectively. A conductor is inserted into a hole provided in the conductor connector, and the conductor connector and the cable conductor are compressed in a state where pressure is applied from the surroundings to crush the conductor. Then, after fixing the conductor connectors 7 and 7a to the conductors 2 and 2a, the protrusions on the surface of the conductor connectors are cut off and modified into a cylindrical shape, and can be accommodated inside the reinforcing insulator 11. State. Further, the conductor connectors 7, 7
The connecting members 8 and 8a are attached to the respective distal ends of the terminals a so that the conductor connectors 7 and 7a can be connected to each other via the connecting members while the conductor connectors 7 and 7a are abutted against each other.
【０００８】前記接続具としては、例えば、特開平６−
３０７４２１号公報等に示されるような接続部材を使用
することができるが、その他に、任意の接続手段を用い
ることができる。また、前記従来例の接続具を本実施例
に適用する場合には、前記２つのケーブル導体の先端部
に取り付ける接続具８、８ａのうち、一方の突出部材に
係止部材を設け、他方の接続具の先端部に、前記突出部
材を受け入れる凹部と係止手段とを設けて構成すること
が可能である。そして、前述したような接続具を使用す
ることにより、補強絶縁体の内部に２本のケーブルを挿
入して、接続筒の部分で導体の端部を自動的に接続し、
電気的な導通をも同時に設定できるようにする。As the connecting tool, for example, Japanese Unexamined Patent Publication No.
Although a connecting member such as that described in JP-A-307421 can be used, any other connecting means can be used. When the conventional connecting device is applied to the present embodiment, one of the connecting members 8 and 8a attached to the distal ends of the two cable conductors is provided with a locking member on one protruding member and the other is provided with a locking member. It is possible to provide a configuration in which a concave portion for receiving the protruding member and a locking means are provided at a distal end portion of the connection tool. Then, by using the connecting tool as described above, the two cables are inserted into the reinforcing insulator, and the ends of the conductors are automatically connected at the connecting tube portion,
Electrical conduction can be set at the same time.
【０００９】前記図４（Ｃ）に示したように、２本のケ
ーブル導体の端部に導体接続子７、７ａをそれぞれ取り
付けた後で、図５（Ａ）に示すようにして、補強絶縁体
１１の貫通孔の一方からケーブル１ａの先端部を挿入
し、導体接続子７ａを導体接触子１３に対して位置決め
する。次いで、同図（Ｂ）に示すように、補強絶縁体１
１の貫通孔の他方から別のケーブル１を挿入して、前記
補強絶縁体１１の中央部で２つの導体接続子７、７ａを
対向させる状態で位置決めすることにより、接続具８、
８ａを導体接触子１３の中央部で接続し、２つの導体接
続子を相互に固定する作用と、電気的な導通を設定する
動作とを自動的に行わせる。As shown in FIG. 4C, after the conductor connectors 7 and 7a are attached to the ends of the two cable conductors, respectively, as shown in FIG. The distal end of the cable 1 a is inserted from one of the through holes of the body 11, and the conductor connector 7 a is positioned with respect to the conductor contact 13. Next, as shown in FIG.
By inserting another cable 1 from the other one of the through holes and positioning the two conductor connectors 7 and 7a at the center of the reinforcing insulator 11 so as to face each other,
8a is connected at the center of the conductor contact 13 so that the operation of fixing the two conductors together and the operation of establishing electrical continuity are automatically performed.
【００１０】そして、前記図５（Ｂ）に示すような接続
を行った後で、図示しないが、両ケーブルの外部半導電
層と補強絶縁体外部半導電層を連結し、加熱・加圧容器
を用いて、補強絶縁体のゴム・プラスチック材料の架橋
処理を行うとともに、ケーブル絶縁体と補強絶縁体とを
一体化させる。その後で、その周囲に防水混和物を被覆
して接続筒を配置することにより、図３に示すようなプ
レハブ接続部１０を形成する。なお、本実施例におい
て、前記ケーブル１、１ａは、金属のコルゲート外装６
を形成したものとして示しているが、前記ケーブルとし
ては、コルゲート外装を有しないＣＶケーブル等を対象
とするものであっても良い。After the connection as shown in FIG. 5 (B) is made, the outer semiconductive layer of both cables and the outer semiconductive layer of the reinforcing insulator are connected to each other, not shown, to form a heating / pressurizing vessel. Is used to crosslink the rubber / plastic material of the reinforcing insulator, and to integrate the cable insulator and the reinforcing insulator. Thereafter, a prefabricated connecting portion 10 as shown in FIG. 3 is formed by arranging the connecting cylinder around the periphery thereof with a waterproof mixture. In this embodiment, the cables 1 and 1a are made of a metal corrugated sheath 6.
However, the cable may be a CV cable having no corrugated sheath.
【００１１】[0011]
【発明が解決しようとする課題】前記従来例に示される
ようなプレハブ接続部においては、ケーブル導体および
ケーブル外径が同一のものを対象とする場合の他に、導
体サイズの異なるものを接続する場合が想定される。例
えば、従来の接続部の構成部材をそのまま適用しようと
すると、ケーブル導体の先端部に取付ける導体接続子で
は、小サイズのケーブル導体に対して導電体等を介在さ
せてから、導体挿入凹部に固定することが必要となる。
ところが、前記導体接続子とケーブル導体との組み合わ
せ部で隙間が生じたりすると、ケーブル接続部の構成が
不安定となる等の問題が発生するので、別体に構成した
スペーサ等のような補助部材を介在させて、ケーブル導
体を導体接続子に固定することが必要となる。しかしな
がら、マンホール等の狭い作業現場で、導体接続子と導
体とを組み合わせるに際して、余分な補助的な接続部材
を用いることは、その接続作業が面倒となることと、高
圧送電ケーブルの接続部で、少しでも不安定な部分が存
在する場合には、送電線路での事故等の発生原因となる
ことがあり、好ましいことではない。In the prefabricated connecting portion as shown in the above-mentioned conventional example, in addition to the case where the cable conductor and the cable outer diameter are the same, those having different conductor sizes are connected. A case is assumed. For example, if a conventional connecting member is to be used as it is, a conductor connector attached to the distal end of a cable conductor fixes a small-sized cable conductor to a conductor insertion recess after interposing a conductor or the like. It is necessary to do.
However, if a gap is formed in a combination portion of the conductor connector and the cable conductor, a problem such as instability of the configuration of the cable connection portion occurs. Therefore, an auxiliary member such as a separately formed spacer or the like is formed. , It is necessary to fix the cable conductor to the conductor connector. However, when combining a conductor connector and a conductor at a narrow work site such as a manhole, the use of an extra auxiliary connection member makes the connection work troublesome, and at a connection portion of a high-voltage power transmission cable, If any unstable portion exists, it may cause an accident or the like in the transmission line, which is not preferable.
【００１２】本発明は、前述したような問題を解決する
もので、接続工事現場で径の異なるケーブルの接続を容
易に行い得て、ケーブル導体の位置決めを確実になし得
る装置を提供することを目的としている。The present invention has been made to solve the above-described problems, and an object of the present invention is to provide an apparatus which can easily connect cables having different diameters at a connection construction site and can reliably position a cable conductor. The purpose is.
【００１３】[0013]
【課題を解決するための手段】本発明は、電力ケーブル
の接続方法に関し、本発明の請求項の発明は、あらかじ
めゴム・プラスチック材料等の樹脂材料により一体に形
成し、長さ方向の中心を貫通する孔を、接続する２つの
ケーブル外径に対応させて設けた補強絶縁体と、前記補
強絶縁体の長さ方向の中央部に配置し、導体接触子を固
定する手段を設けた高圧シールド電極と、前記高圧シー
ルド電極の内部にねじ部を介して固定され、接続される
ケーブルの位置決めを行う導体接触子と、前記補強絶縁
体の両側から挿入するケーブルの各々に対して、そのケ
ーブル導体の先端部に各々固定し、前記ケーブル導体の
サイズに合わせた導体挿入凹部を設けた基部材と、導体
接触子の内径に合わせた外形を有し、接続具を先端部に
設けた導体接続子とを用い、前記導体接触子の両側から
導体接続子を挿入し、前記導体接続子の先端部に設けた
接続具を突き合わせるようにして係合させることによ
り、補強絶縁体に対する位置決めとケーブル導体の電気
的な接続とを行うことを特徴とする。SUMMARY OF THE INVENTION The present invention relates to a method for connecting a power cable, and the invention according to the claims of the present invention is formed integrally with a resin material such as a rubber or plastic material in advance and has a center in the length direction. A high-voltage shield having a reinforcing insulator provided with through holes corresponding to the outer diameters of two cables to be connected, and a means for fixing a conductor contact, the reinforcing insulator being arranged at a central portion in a longitudinal direction of the reinforcing insulator. An electrode, a conductor contact fixed to the inside of the high-voltage shield electrode via a screw portion, and positioning a cable to be connected; and a cable conductor for each of cables inserted from both sides of the reinforcing insulator. A base member having a conductor insertion concave portion corresponding to the size of the cable conductor, and a base member having an outer shape corresponding to the inner diameter of the conductor contact member, and a connecting tool provided at the front end portion. By inserting a conductor connector from both sides of the conductor contact and engaging the connector provided at the tip of the conductor connector so as to abut against each other, positioning with respect to the reinforcing insulator and positioning of the cable conductor Electrical connection is made.
【００１４】請求項２の発明は、前記補強絶縁体の内部
に配置する高圧シールド電極は、ケーブル導体の接続中
心部に対応する孔の内部に段部を設け、前記段部を介し
て大径の孔と小径の孔とを設け、前記小径の孔の内面に
は導体接触子を装着するねじ部を設け、前記導体接触子
の内面には導体接続子を挿入する孔を設け、前記導体接
触子の外面には前記高圧シールド電極の段部に対応させ
た大径部と小径部とを、段部を介して設け、前記小径部
にはねじ部を設け、前記高圧シールド電極の内部に導体
接触子を挿入してねじ部と段部とを介してを固定するこ
とにより、補強絶縁体に対する導体接続子の位置決めを
行うことを特徴とする。According to a second aspect of the present invention, in the high-voltage shield electrode disposed inside the reinforcing insulator, a step is provided inside a hole corresponding to a connection center of a cable conductor, and a large diameter is provided through the step. And a small-diameter hole, a screw portion for mounting a conductor contact is provided on the inner surface of the small-diameter hole, and a hole for inserting a conductor connector is provided on the inner surface of the conductor contact. A large-diameter portion and a small-diameter portion corresponding to the step portion of the high-voltage shield electrode are provided on the outer surface of the child through a step portion, a screw portion is provided on the small-diameter portion, and a conductor is provided inside the high-pressure shield electrode. It is characterized in that the conductor connector is positioned with respect to the reinforcing insulator by inserting the contact and fixing the contact via the screw portion and the step portion.
【００１５】前述したように構成したことにより、本発
明の接続方法においては、プレモールド補強絶縁体を用
いて導体サイズが異なるケーブルの接続を行う際に、従
来より用いられている補強絶縁体と、その周囲の絶縁被
覆等の基本的な構造を変更せずに、ケーブルのサイズに
容易に対処させることができる。また、補強絶縁体の内
部での導体接触子の位置決めと、前記導体接触子に対す
る導体接続子の装着・位置決めを容易に行うことがで
き、プレハブ接続部に対する信頼性を向上させるととも
に、接続作業を行う際の作業性を良好に維持できる。[0015] With the above-described configuration, in the connection method of the present invention, when connecting cables having different conductor sizes using the pre-molded reinforcing insulator, the connection between the reinforcing insulator conventionally used and the conventionally used reinforcing insulator can be made. It is possible to easily deal with the size of the cable without changing the basic structure such as the insulating coating around the cable. In addition, the positioning of the conductor contact inside the reinforcing insulator and the mounting and positioning of the conductor connector with respect to the conductor contact can be easily performed, and the reliability of the prefabricated connection portion is improved, and the connection work is improved. Workability at the time of performing can be favorably maintained.
【００１６】[0016]
【発明の実施の形態】図示される例にしたがって、本発
明の電力ケーブルの接続方法を説明する。図１、２に示
す例は、前記図３に示したプレハブ接続部における接続
部の構成を、補強絶縁体１１とその内部に挿入するケー
ブルとの関係を示しているもので、一方のケーブル１は
導体の径が小さいものを、他方のケーブル１ａは導体の
径が大きいものの場合で説明している。なお、以下に説
明する実施例においては、ケーブル導体の先端部に固定
する導体接続子と、補強絶縁体の内部に配置する高圧シ
ールド電極および導体接触子は、前記図３〜５に示すも
のとは符号が異なるものとして説明するが、ケーブル接
続部を構成する各部材の構造と、作用に関しては、図
１、２で説明するもの以外は同一のものを用いる場合を
想定して説明する。また、この実施例で示す示す部材
は、従来の接続部を構成する部材と同様な作用を発揮で
きるものとして構成している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A method for connecting a power cable according to the present invention will be described with reference to the illustrated example. The example shown in FIGS. 1 and 2 shows the structure of the connection part in the prefabricated connection part shown in FIG. 3 described above, showing the relationship between the reinforcing insulator 11 and the cable inserted therein. Is described in the case where the diameter of the conductor is small, and the other cable 1a is described in the case where the diameter of the conductor is large. In the embodiments described below, the conductor connector fixed to the distal end of the cable conductor, the high-voltage shield electrode and the conductor contact arranged inside the reinforcing insulator are the same as those shown in FIGS. Although the description will be made assuming that reference numerals are different, the structure and operation of each member constituting the cable connection portion will be described on the assumption that the same members are used except for those described with reference to FIGS. Further, the members shown in this embodiment are configured so as to be able to exhibit the same operation as the members constituting the conventional connecting portion.
【００１７】本実施例において、補強絶縁体１１は小径
のケーブル１の外径に対応させて、径がＡ１の孔１１Ａ
と、大径のケーブル１ａに対応させた径がＡ２の孔１１
Ｂとを、補強絶縁体の両端部から所定の範囲に形成して
いる。また、前記端部の孔からテーパ部を介して高圧シ
ールド電極３０の貫通孔に接続し、高圧シールド電極の
貫通孔と補強絶縁体の孔とを接続した貫通孔を構成して
いる。前記補強絶縁体１１の内部に埋め込む状態で一体
に構成する高圧シールド電極３０は、従来のプレハブ接
続部の場合と同様に、金属製の略円筒状のものとして構
成される。そして、導体接触子３５の内径がｄの貫通孔
に対して、その高圧シールド電極の両側には、段部３３
を介して内径がＤ２の大径孔３１と、内径がＤ１の小径
孔３２とを設けている。In this embodiment, the reinforcing insulator 11 has a hole 11A having a diameter A1 corresponding to the outer diameter of the cable 1 having a small diameter.
And a hole 11 having an A2 diameter corresponding to the large-diameter cable 1a.
B are formed in a predetermined range from both ends of the reinforcing insulator. Also, the through hole of the high voltage shield electrode 30 is connected to the through hole of the high voltage shield electrode 30 through the tapered portion from the hole at the end portion to form a through hole connecting the through hole of the high voltage shield electrode and the hole of the reinforcing insulator. The high-voltage shield electrode 30 integrally formed so as to be embedded in the reinforcing insulator 11 is formed as a substantially cylindrical metal member, as in the case of the conventional prefabricated connection portion. The stepped portion 33 is provided on both sides of the high-voltage shield electrode with respect to the through hole having the inner diameter d of the conductor contact 35.
A large-diameter hole 31 having an inner diameter of D2 and a small-diameter hole 32 having an inner diameter of D1 are provided through the hole.
【００１８】また、前記小径孔３２には段部３３から所
定の範囲に亘ってねじ部３４を設けて、導体接触子３５
を固定するために用いる。前記高圧シールド電極３０に
装着する導体接触子３５は、導体接続子を挿入する貫通
孔を設けるが、外径がＤ２の大径部３６と、ねじ部を設
けた外径がＤ１の小径部３７とを、段部３８を介して設
けている。そして、前記高圧シールド電極３０の貫通孔
に対して大径孔側から導体接触子３５を挿入し、ねじ部
を係合させながら、前記高圧シールド電極と導体接触子
の段部３３と３８とを突き合わせるように位置決めする
ことにより、高圧シールド電極３０の内部に導体接触子
３５を固定・位置決めさせて導体接続子の挿入に対応さ
せる。Further, the small diameter hole 32 is provided with a screw portion 34 from the step portion 33 over a predetermined range, so that the conductor contact 35
Used to fix. The conductor contact 35 mounted on the high-voltage shield electrode 30 is provided with a through-hole into which a conductor connector is inserted. A large-diameter portion 36 having an outer diameter of D2 and a small-diameter portion 37 having an outer diameter of D1 having a screw portion are provided. Are provided via the step 38. Then, the conductor contact 35 is inserted into the through hole of the high-voltage shield electrode 30 from the side of the large-diameter hole, and the high-voltage shield electrode and the stepped portions 33 and 38 of the conductor contact are engaged while the screw portion is engaged. By positioning them so as to abut each other, the conductor contacts 35 are fixed and positioned inside the high-voltage shield electrode 30 to correspond to insertion of the conductor connectors.
【００１９】前記高圧シールド電極に挿入して導体の電
気的な接続を行うために、ケーブル１、１ａの先端部に
は、それぞれ導体接続子２０、２５を装着する。前記ケ
ーブル１の小径の導体２に装着する導体接続子２０で
は、ケーブル導体の径ｄ１に対応させた導体挿入凹部２
３を設けた基部材２２と、外径がｄの先端部材２１とを
設け、前記先端部材２１の先端部には、詳細な構造を省
略する接続具８を設けている。また、前記ケーブル１ａ
の大径の導体２ａに装着する導体接続子２５では、ケー
ブル導体の径ｄ２に対応させた導体挿入凹部２８を設け
た基部材２７と、外径がｄの先端部材２６とを設け、前
記先端部材２６の先端部に接続具８ａを設けている。In order to connect the conductors by inserting them into the high-voltage shield electrodes, conductor connectors 20 and 25 are attached to the ends of the cables 1 and 1a, respectively. In the conductor connector 20 mounted on the small-diameter conductor 2 of the cable 1, the conductor insertion recess 2 corresponding to the diameter d1 of the cable conductor is provided.
3 is provided with a tip member 21 having an outer diameter of d. At the tip of the tip member 21, there is provided a connector 8 omitting a detailed structure. In addition, the cable 1a
In the conductor connector 25 mounted on the large-diameter conductor 2a, a base member 27 provided with a conductor insertion recess 28 corresponding to the diameter d2 of the cable conductor, and a tip member 26 having an outer diameter d are provided. The connecting member 8a is provided at the tip of the member 26.
【００２０】前記ケーブル導体２、２ａの先端部に各々
装着する導体接続子２０、２５においては、導体挿入凹
部に導体を挿入してから、押圧工具を用いて圧縮作用を
付与し、導体挿入凹部の内部に導体を圧縮した状態で固
定する。また、前記２つの導体接続子２０，２５の各々
の先端部材の先端部に設ける接続具は、例えば、特開平
６−３０７４２１号公報等に示されるように、一方の接
続具に設けている凹部に対して、他方の接続具に設けた
突部材を挿入し、突部材の爪を拡開させることにより係
止させるような構造のものを用いることが可能である。
また、前記接続具の係止手段としては、一方の接続具を
他方の接続具に組み合わせて両者を固定できるととも
に、ケーブルの長さ方向に引っ張り力が付与されても係
止状態を維持できるものであれば、従来公知の任意の接
続手段を用いることができる。In the conductor connectors 20 and 25 respectively mounted on the distal ends of the cable conductors 2 and 2a, after the conductor is inserted into the conductor insertion recess, a compressing action is given by using a pressing tool, and the conductor insertion recess is provided. The conductor is fixed in a compressed state. Further, as shown in, for example, JP-A-6-307421, a concave portion provided in one of the two conductor connectors 20 and 25 is provided at a distal end portion of a distal end member of each of the two conductor connectors 20 and 25. On the other hand, it is possible to use a structure in which a projecting member provided on the other connecting member is inserted and the projecting member is locked by expanding the claws of the projecting member.
In addition, as the locking means of the connecting tool, one capable of combining one connecting tool with the other connecting tool and fixing both, and also capable of maintaining the locked state even when a pulling force is applied in the length direction of the cable. If so, any conventionally known connection means can be used.
【００２１】前記ケーブル１、１ａの導体２、２ａの先
端部に、前述したような構成を有する導体接続子２０、
２５に設けたものを用いて、補強絶縁体の貫通孔に挿入
することにより、図１、２に示すようなプレハブ接続部
１０ａを形成することができる。高圧シールド電極３０
をゴム・プラスチックで被覆する状態で一体に設けた補
強絶縁体１１を、あらかじめ工場で製作し、その高圧シ
ールド電極３０に対して導体接触子３５を装着したもの
を組立現場に搬入する。また、ケーブル導体の先端部に
装着する導体接続子は、プレハブ接続部１０ａの組立現
場で加工するもので、ケーブルを所定の長さに切断し
て、そのケーブルの被覆を剥離してペンシリング等の処
理を行ってから、前記図４に示すようにして導体の先端
部に導体接続子を固定して装着する。At the ends of the conductors 2 and 2a of the cables 1 and 1a, a conductor connector 20 having the above-described configuration is provided.
The prefabricated connecting portion 10a as shown in FIGS. 1 and 2 can be formed by using the one provided in 25 and inserting it into the through hole of the reinforcing insulator. High voltage shield electrode 30
Is manufactured in a factory in advance, and a conductor in which a conductor contact 35 is attached to the high-voltage shield electrode 30 is carried into an assembly site. The conductor connector to be attached to the distal end of the cable conductor is processed at the assembly site of the prefabricated connection portion 10a. The cable is cut into a predetermined length, and the coating of the cable is peeled off to form a pencil ring or the like. After performing the above processing, a conductor connector is fixedly attached to the tip of the conductor as shown in FIG.
【００２２】そして、前記補強絶縁体１１の貫通孔の一
方の側から、前記図５（Ａ）に示すようにしてケーブル
の装着を行う。本実施例においては、先ず、大径のケー
ブル１ａの導体接続子２５を挿入し、先端部材２６を導
体接触子３５の孔に挿入して、基部材２７の肩部を導体
接触子の端部に係止させる。次いで、前記補強絶縁体１
１の貫通孔の一方の側から、小径のケーブル１の導体接
続子２０を挿入し、先端部材２１を導体接触子３５の孔
に挿入して、基部材２２の肩部を導体接触子の端部に係
止させるようにする。前記先端部材２１を導体接触子に
挿入する途中の段階で、先端部材２６に設けている導体
挿入凹部８ａと先端部材２１の導体挿入凹部８が係合さ
れ、前記基部材の肩部を導体接触子の端部にまで挿入す
ることにより導体挿入凹部の係止が行われ、２つのケー
ブル導体の機械的な接続と電気的な導通とが設定され
る。Then, a cable is mounted from one side of the through hole of the reinforcing insulator 11 as shown in FIG. In this embodiment, first, the conductor connector 25 of the large diameter cable 1a is inserted, the tip member 26 is inserted into the hole of the conductor contact 35, and the shoulder of the base member 27 is connected to the end of the conductor contact. To lock. Next, the reinforcing insulator 1
1, the conductor connector 20 of the small-diameter cable 1 is inserted from one side, the tip member 21 is inserted into the hole of the conductor contact 35, and the shoulder of the base member 22 is connected to the end of the conductor contact. Part. At the stage of inserting the tip member 21 into the conductor contact, the conductor insertion recess 8a provided in the tip member 26 and the conductor insertion recess 8 of the tip member 21 are engaged, and the shoulder of the base member is brought into contact with the conductor. The insertion of the conductor insertion recess is performed by inserting the cable into the end of the cable, and the mechanical connection and electrical continuity of the two cable conductors are set.
【００２３】そして、前記導体接触子を介して装着する
２つの導体接続子を介して補強絶縁体の内部でのケーブ
ル導体の接続が行われるので、前記図１に示すように構
成したプレハブ接続部に対して、補強絶縁体の周囲から
加熱と加圧作用を付与して、補強絶縁体のゴム・プラス
チックの圧縮と架橋作用とを付与し、ケーブル導体の接
続部に隙間が生じないような処理を行う。前述したよう
な処理を行った後で、補強絶縁体の周囲に絶縁部材を配
置し、絶縁筒等を外周部に設けて防水手段を形成する等
の処理を行い、図３に示すようなプレハブ接続部１０を
作成する。Then, the connection of the cable conductor inside the reinforcing insulator is performed via two conductor connectors mounted via the conductor contacts, so that the prefabricated connection portion configured as shown in FIG. A process that applies heating and pressurizing action from the periphery of the reinforcing insulator to compress and bridge the rubber and plastic of the reinforcing insulator so that there is no gap in the connection part of the cable conductor I do. After performing the above-described processing, an insulating member is arranged around the reinforcing insulator, and an insulating cylinder or the like is provided on the outer peripheral portion to form waterproofing means. The connection unit 10 is created.
【００２４】なお、前記実施例において、マンホールを
用いて配置するプレハブ接続部を介して接続する地下配
電線路のような送電系統を構成する場合は、ケーブルの
サイズは比較的少ない種類のものを用いるのであるか
ら、ケーブル導体の先端部に装着する導体接続子の種類
も多いものとはならない。したがって、前記異種径のケ
ーブルの接続を行ってプレハブ接続部を形成する場合に
は、そのケーブルに対応させた数種類の導体接続子を準
備しておき、図２に示すような高圧シールド電極と導体
接触子を組み合わせた補強絶縁体に対して導体接続子を
組み合わせることにより、容易に接続作業を行うことが
できる。In the above embodiment, when a power transmission system such as an underground power distribution line connected via a prefabricated connection portion arranged using manholes is used, a cable having a relatively small size is used. Therefore, there are not many types of conductor connectors attached to the distal end of the cable conductor. Therefore, when connecting the cables having different diameters to form a prefabricated connection portion, several types of conductor connectors corresponding to the cables are prepared, and a high-voltage shield electrode and a conductor as shown in FIG. By connecting the conductor connector to the reinforcing insulator in which the contact is combined, the connection operation can be easily performed.
【００２５】[0025]
【発明の効果】本発明の接続方法においては、前述した
ように構成した部材を用いることにより、プレモールド
補強絶縁体を用いて導体サイズが異なるケーブルの接続
を行う際に、従来より用いられている補強絶縁体と、そ
の周囲の絶縁被覆等の基本的な構造を変更せずに、ケー
ブルのサイズに容易に対処させることができる。また、
補強絶縁体の内部での導体接触子の位置決めと、前記導
体接触子に対する導体接続子の装着・位置決めを容易に
行うことができ、プレハブ接続部に対する信頼性を向上
させるとともに、作業性を良好に維持できる。According to the connection method of the present invention, by using the member configured as described above, when connecting cables having different conductor sizes using the pre-molded reinforced insulator, the conventional connection method is used. It is possible to easily cope with the size of the cable without changing the basic structure of the reinforcing insulator and its surrounding insulating coating. Also,
The positioning of the conductor contacts inside the reinforcing insulator and the mounting and positioning of the conductor connectors on the conductor contacts can be easily performed, and the reliability of the prefabricated connection portion is improved, and the workability is improved. Can be maintained.
【図１】 本発明のプレハブ接続部の構成を示す説明図
である。FIG. 1 is an explanatory diagram showing a configuration of a prefabricated connection section of the present invention.
【図２】 図１の要部の拡大説明図である。FIG. 2 is an enlarged explanatory view of a main part of FIG. 1;
【図３】 一般的なプレハブ接続部の構成を示す説明図
である。FIG. 3 is an explanatory diagram illustrating a configuration of a general prefabricated connection unit.
【図４】 ケーブルの加工と導体接続子を取付ける工程
の説明図である。FIG. 4 is an explanatory diagram of a process of processing a cable and attaching a conductor connector.
【図５】 補強絶縁体に対して２つのケーブルを挿入し
て接続する工程の説明図である。FIG. 5 is an explanatory diagram of a step of inserting and connecting two cables to a reinforcing insulator.
１ ケーブル、 ２ ケーブル導体、 ７ 導体
接続子、８ 接続具、 １０ プレハブ接続部、
１１ 補強絶縁体、１２ 高圧シールド電極、 １
７ 絶縁筒、２０・２５ 導体接続子、 ２１・２
６ 先端部材、２２・２７ 基部材、 ２３・２８
導体挿入凹部、３０ 高圧シールド電極、 ３１
大径孔、 ３２ 小径孔、３３ 段部、 ３４
ねじ部、 ３５ 導体接触子、３６ 大径部、
３７ 小径部、 ３８ 段部、 ３９ 貫通
孔。1 cable, 2 cable conductor, 7 conductor connector, 8 connector, 10 prefabricated connection,
11 Reinforced insulator, 12 High voltage shield electrode, 1
7 Insulation cylinder, 20/25 conductor connector, 21.2
6 Tip member, 22/27 Base member, 23/28
Conductor insertion recess, 30 High voltage shield electrode, 31
Large-diameter hole, 32 Small-diameter hole, 33 steps, 34
Screw part, 35 conductor contact, 36 large diameter part,
37 small diameter part, 38 stepped part, 39 through hole.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 近藤 邦彦 東京都千代田区丸の内３−４−１ 三菱電 線工業株式会社東京事務所内 Ｆターム(参考） 5G355 AA03 BA01 BA12 CA06 CA23 5G375 AA02 BA09 BA26 BB46 CA02 CA14 CB05 CB47 CB53 DB02 DB22 DB35 EA08 EA17 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Kunihiko Kondo, Inventor 3-4-1 Marunouchi, Chiyoda-ku, Tokyo F-term (reference) in the Tokyo office of Mitsubishi Electric Wire & Cable Co., Ltd. 5G355 AA03 BA01 BA12 CA06 CA23 5G375 AA02 BA09 BA26 BB46 CA02 CA14 CB05 CB47 CB53 DB02 DB22 DB35 EA08 EA17
Claims (2)
樹脂材料により一体に形成し、長さ方向の中心を貫通す
る孔を、接続する２つのケーブル外径に対応させて設け
た補強絶縁体と、 前記補強絶縁体の長さ方向の中央部に配置し、導体接触
子を固定する手段を設けた高圧シールド電極と、 前記高圧シールド電極の内部にねじ部を介して固定さ
れ、接続されるケーブルの位置決めを行う導体接触子
と、 前記補強絶縁体の両側から挿入するケーブルの各々に対
して、そのケーブル導体の先端部に各々固定し、前記ケ
ーブル導体のサイズに合わせた導体挿入凹部を設けた基
部材と、導体接触子の内径に合わせた外形を有し、接続
具を先端部に設けた導体接続子と、を用い、 前記導体接触子の両側から導体接続子を挿入し、前記導
体接続子の先端部に設けた接続具を突き合わせるように
して係合させることにより、補強絶縁体に対する位置決
めとケーブル導体の電気的な接続とを行うことを特徴と
する電力ケーブルの接続方法。A reinforcing insulator formed in advance integrally with a resin material such as a rubber or plastic material and having a hole penetrating the center in the longitudinal direction provided in correspondence with the outer diameters of two cables to be connected; A high-voltage shield electrode provided at a central portion in the longitudinal direction of the reinforcing insulator and provided with a means for fixing a conductor contact; positioning of a cable fixed and connected to the inside of the high-voltage shield electrode via a screw portion; And a base member fixed to the distal end of the cable conductor for each of the cables inserted from both sides of the reinforcing insulator, and provided with a conductor insertion recess corresponding to the size of the cable conductor And a conductor connector having an outer shape adapted to the inner diameter of the conductor contact, and a connector provided at a tip end of the conductor contact, and inserting the conductor connector from both sides of the conductor contact, tip Connection of the power cable by engaging manner matching the provided connection device, and performing the electrical connection of the positioning and the cable conductor for reinforcing insulator.
ールド電極は、ケーブル導体の接続中心部に対応する孔
の内部に段部を設け、前記段部を介して大径の孔と小径
の孔とを設け、前記小径の孔の内面には導体接触子を装
着するねじ部を設け、 前記導体接触子の内面には導体接続子を挿入する孔を設
け、 前記導体接触子の外面には前記高圧シールド電極の段部
に対応させた大径部と小径部とを、段部を介して設け、
前記小径部にはねじ部を設け、 前記高圧シールド電極の内部に導体接触子を挿入してね
じ部と段部とを介してを固定することにより、補強絶縁
体に対する導体接続子の位置決めを行うことを特徴とす
る請求項１に記載の電力ケーブルの接続方法。2. The high-voltage shield electrode disposed inside the reinforcing insulator has a step inside a hole corresponding to a connection center of a cable conductor, and a large-diameter hole and a small-diameter hole are formed through the step. A hole for inserting a conductor connector is provided on the inner surface of the conductor contact, and an outer surface of the conductor contact is provided on the inner surface of the conductor contact. A large diameter portion and a small diameter portion corresponding to the step of the high-voltage shield electrode are provided via the step,
The small diameter portion is provided with a screw portion, and a conductor contact is inserted into the high-voltage shield electrode and fixed via the screw portion and the step portion, thereby positioning the conductor connector with respect to the reinforcing insulator. The method for connecting a power cable according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15586299A JP3389531B2 (en) | 1999-06-03 | 1999-06-03 | How to connect the power cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15586299A JP3389531B2 (en) | 1999-06-03 | 1999-06-03 | How to connect the power cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000350349A true JP2000350349A (en) | 2000-12-15 |
| JP3389531B2 JP3389531B2 (en) | 2003-03-24 |
Family
ID=15615140
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15586299A Expired - Fee Related JP3389531B2 (en) | 1999-06-03 | 1999-06-03 | How to connect the power cable |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3389531B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040080131A (en) * | 2003-03-11 | 2004-09-18 | 엘지전선 주식회사 | Rubber sleeve for jointing between cables with different conductor size |
| KR100729044B1 (en) * | 2005-08-25 | 2007-06-14 | 한국전력공사 | Unity type sleeves for connection of service wire |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102457873B1 (en) * | 2015-01-15 | 2022-10-25 | 엘에스전선 주식회사 | Joint sleeve and Connection structrue |
-
1999
- 1999-06-03 JP JP15586299A patent/JP3389531B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040080131A (en) * | 2003-03-11 | 2004-09-18 | 엘지전선 주식회사 | Rubber sleeve for jointing between cables with different conductor size |
| KR100729044B1 (en) * | 2005-08-25 | 2007-06-14 | 한국전력공사 | Unity type sleeves for connection of service wire |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3389531B2 (en) | 2003-03-24 |
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