JP3315522B2 - Method for forming gas-insulated intermediate connection of rubber and plastic power cables - Google Patents
Method for forming gas-insulated intermediate connection of rubber and plastic power cablesInfo
- Publication number
- JP3315522B2 JP3315522B2 JP10226994A JP10226994A JP3315522B2 JP 3315522 B2 JP3315522 B2 JP 3315522B2 JP 10226994 A JP10226994 A JP 10226994A JP 10226994 A JP10226994 A JP 10226994A JP 3315522 B2 JP3315522 B2 JP 3315522B2
- Authority
- JP
- Japan
- Prior art keywords
- gas
- cable
- rubber
- outer case
- insulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 229920003023 plastic Polymers 0.000 title claims description 20
- 239000004033 plastic Substances 0.000 title claims description 20
- 229920001971 elastomer Polymers 0.000 title claims description 19
- 238000000034 method Methods 0.000 title claims description 12
- 239000004020 conductor Substances 0.000 claims description 33
- 239000012212 insulator Substances 0.000 claims description 16
- 238000004804 winding Methods 0.000 claims description 9
- 229920002367 Polyisobutene Polymers 0.000 claims description 8
- 239000002390 adhesive tape Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 description 10
- 238000009413 insulation Methods 0.000 description 8
- 239000000853 adhesive Substances 0.000 description 7
- 230000001070 adhesive effect Effects 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 7
- 229920003020 cross-linked polyethylene Polymers 0.000 description 6
- 239000004703 cross-linked polyethylene Substances 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 238000001125 extrusion Methods 0.000 description 4
- 239000011888 foil Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229920000742 Cotton Polymers 0.000 description 2
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000003365 glass fiber Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920000728 polyester Polymers 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
- Processing Of Terminals (AREA)
- Gas Or Oil Filled Cable Accessories (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は架橋ポリエチレン絶縁電
力ケーブル等のゴム、プラスチック電力ケーブルのガス
絶縁型中間接続部の形成方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a gas-insulated intermediate connection portion of a rubber or plastic power cable such as a crosslinked polyethylene insulated power cable.
【０００２】[0002]
【従来の技術】従来、ゴム、プラスチック電力ケーブル
の接続部絶縁の形成方法としては、自己融着テープの巻
回によるテープ巻絶縁方式、架橋ポリエチレン等の押出
しによる押出しモールド絶縁方式がある。又別の方式と
して、特開昭50-12585号公報には接続ケース内に絶縁ガ
スを充填したゴム、プラスチック電力ケーブルのガス絶
縁型接続部が、実開昭50-136794 号（マイクロフィル
ム）には接続ケース内に流動性の絶縁混和物を充填した
ゴム、プラスチック電力ケーブルの接続部が示されてい
る。2. Description of the Related Art Conventionally, as a method of forming insulation of a connection portion of a rubber or plastic power cable, there are a tape winding insulation system by winding a self-fusing tape and an extrusion mold insulation system by extruding crosslinked polyethylene or the like. As another method, Japanese Patent Laid-Open Publication No. Sho 50-12585 discloses a gas-insulated connection portion of a rubber or plastic power cable in which an insulating gas is filled in a connection case. The figure shows a connection part of a rubber or plastic power cable in which a connection case is filled with a fluid insulating mixture.
【０００３】[0003]
【発明が解決しようとする課題】上述した従来の接続部
のうち、テープ巻絶縁接続部は、導体接続部上に自己融
着テープを巻回して接続部絶縁体を形成するもので、超
高圧ケーブルに適用するには径が非常に大きくなり、重
量大による変形や、組立時間が非常に長くなるという問
題がある。又架橋ポリエチレンの押出しによる押出しモ
ールド絶縁接続部は、押出設備や架橋設備が必要な上、
組立時間が１相分10日も要するという問題がある。Among the above-mentioned conventional connecting portions, the tape-wound insulating connecting portion is formed by winding a self-fusing tape on a conductor connecting portion to form a connecting portion insulator. When applied to a cable, the diameter becomes very large, and there is a problem that deformation due to heavy weight and an assembling time become very long. In addition, extrusion molding insulation connection by extrusion of cross-linked polyethylene requires extrusion equipment and cross-linking equipment,
There is a problem that assembling time is 10 days for one phase.
【０００４】一方、ガス絶縁は接続部絶縁方式として
は、接続部の外部ケース内に絶縁ガスを封入するだけで
よいので短時間に組立てができるが、ガスシールの困難
さ、固体絶縁と異なり導体固定の困難さがあり、実用化
が進んでいない。前述の特開昭50-12585号、実開昭 50-
136794号にもこの点についてなんら言及されていない。[0004] On the other hand, gas insulation can be assembled in a short period of time by simply enclosing an insulating gas in an outer case of the connection part. However, unlike the solid insulation, gas insulation is difficult. There is difficulty in fixing, and practical use has not been advanced. The above-mentioned JP-A-50-12585, Japanese Utility Model 50-
136794 does not mention this point at all.
【０００５】[0005]
【課題を解決するための手段】本発明は上述のガスシー
ルの困難さ、導体固定の困難さを解決したゴム、プラス
チック電力ケーブルのガス絶縁型中間接続部の形成方法
を提供するもので、その第１の特徴は、導体接続スリー
ブの端部に非圧縮円形部を設け、これと相対するケーブ
ル絶縁端部にこれとほぼ同径に削った段差部を設け、上
記非圧縮円形部端部とケーブル絶縁体段差部端部間をポ
リイソブチレンを主成分とするテープを巻回して埋めた
後、前記導体接続スリーブの非圧縮円形部から絶縁体段
差部上にわたって熱収縮チューブ層を設け、熱収縮チュ
ーブの両端に粘着テープを貼着することによりガスシー
ルしたことにある。SUMMARY OF THE INVENTION The present invention provides a method for forming a gas-insulated intermediate connection portion of a rubber or plastic power cable which solves the above-mentioned difficulties in gas sealing and in fixing a conductor. The first feature is that an uncompressed circular portion is provided at the end of the conductor connection sleeve, and a step portion cut to have substantially the same diameter as the cable insulating end opposed thereto is provided. After winding and filling a tape containing polyisobutylene as the main component between the ends of the cable insulator step, a heat-shrinkable tube layer is provided from the non-compressed circular portion of the conductor connection sleeve to the insulator step. That is, gas sealing was performed by attaching an adhesive tape to both ends of the tube.
【０００６】本発明の第２の特徴は、ケーブル外部半導
電層の外側にフランジを有する筒状体を設け、該筒状体
の端部付近からケーブル外部半導電層上にわたってポリ
イソブチレンを主成分とするテープの巻回層を設け、そ
の上に熱収縮チューブ層を設け、熱収縮チューブの両端
に粘着テープを貼着するとともに、前記筒状体はそのフ
ランジを介して外部ケースに気密に固着してガスシール
したことにある。A second feature of the present invention is that a tubular body having a flange is provided outside the outer semiconductive layer of the cable, and polyisobutylene is a main component extending from near the end of the tubular body to the outer semiconductive layer of the cable. A heat-shrinkable tube layer is provided thereon, a heat-shrinkable tube layer is provided thereon, and an adhesive tape is attached to both ends of the heat-shrinkable tube, and the tubular body is air-tightly fixed to the outer case via its flange. Gas sealing.
【０００７】本発明の第３の特徴は、導体スリーブの中
央に貫通孔を設け、この貫通孔に両端にネジ部を設けた
芯棒を通し、この外周に設けた２分割のコロナシールド
を外部ケースとの間に設ける絶縁スペーサのネジ部と螺
合させて一体に固着することにより、外部ケースと導体
接続スリーブとを融通可能に固定したことにある。A third feature of the present invention is that a through-hole is provided in the center of the conductor sleeve, a core rod provided with a threaded portion at both ends is passed through the through-hole, and a two-part corona shield provided on the outer periphery is externally provided. An external case and a conductor connection sleeve are fixed in a flexible manner by being screwed together with a screw portion of an insulating spacer provided between the case and being integrally fixed.
【０００８】[0008]
【作用】ガスシール方法としては、ガス透過性のない金
属とＯリングの組合せが一般的であるが、ゴム、プラス
チックケーブルは外力で変形すること、マンホール内工
事現場でＯリングの当り面精度▽▽▽仕上げが困難なこ
とから適当ではない。このためケーブルと同じゴム、プ
ラスチック材料によるガスシール方法を考えた。[Function] As a gas sealing method, a combination of a metal having no gas permeability and an O-ring is generally used. However, rubber and plastic cables are deformed by an external force.な い Not suitable due to difficult finishing. Therefore, a gas sealing method using the same rubber or plastic material as the cable was considered.
【０００９】シール方法としては、寸法精度の悪い物体
にも密着できる点で熱収縮チューブを用い、このチュー
ブの両端を粘着テープで巻回することにより、ガス圧力
が加わればこの粘着テープが押えられることになること
から、シール性が良くなるという自己シール性構造とし
た。又現場での荒い仕上げ加工面にも粘着密着し、ガス
透明性の悪いポリイソブチレンを主成分とするテープ材
料をシール部に付与することを考えた。さらに熱収縮チ
ューブとして金属箔をサンドイッチしたものを用いるこ
とで厚み方向のガス透明性を少なくすることも考えた。As a sealing method, a heat-shrinkable tube is used in that it can be in close contact with an object having poor dimensional accuracy, and both ends of the tube are wound with an adhesive tape so that the adhesive tape can be pressed down when gas pressure is applied. For this reason, a self-sealing structure in which the sealing property is improved is adopted. In addition, the present inventors considered that a tape material containing polyisobutylene as a main component, which is poor in gas transparency and adheres to a rough finish processing surface at the site, is applied to the seal portion. Furthermore, it was considered that gas transparency in the thickness direction was reduced by using a metal foil sandwiched as a heat-shrinkable tube.
【００１０】ゴム、プラスチックケーブルは導体に電流
が流れると熱膨張することから、接続部の近くで膨張を
曲り部の変形で吸収するためにオフセット部が設けられ
る。接続部ではこのケーブルの曲りに見合った力が働く
が、接続部の両端に働く力の差分の力を受けても絶縁構
造が保たれるようにする必要がある。このためには接続
部ケースにケーブルの構造の中で最も強い導体部を固定
することが考えられる。一方現場組立ての性格上、外部
ケースと導体固定部及び外部ケースとケーブル上ガスシ
ール部フランジとを１／10, １／100mm の精度で組立て
るのは困難である。従って導体引出棒と絶縁スペーサを
固定する芯棒とは１〜２mm程度の隙間を設ける構造と
し、この隙間分だけ外部ケースとケーブルが相対移動し
てもケーブル外部半導電層でのガスシール性が保たれる
ようにした。Since rubber and plastic cables thermally expand when a current flows through the conductor, an offset portion is provided near the connection portion to absorb the expansion by deformation of the bent portion. Although a force corresponding to the bending of the cable is applied to the connecting portion, it is necessary to maintain the insulation structure even when the force of the difference between the forces applied to both ends of the connecting portion is received. For this purpose, it is conceivable to fix the strongest conductor in the cable structure to the connection case. On the other hand, due to the nature of on-site assembly, it is difficult to assemble the outer case and the conductor fixing portion and the outer case and the gas seal flange on the cable with an accuracy of 1/10 or 1/100 mm. Therefore, a gap of about 1 to 2 mm is provided between the conductor drawing rod and the core rod for fixing the insulating spacer. Even if the outer case and the cable move relative to each other by this gap, the gas sealing property of the cable outer semiconductive layer is maintained. It was kept.
【００１１】[0011]
【実施例】図１は本発明の方法により形成されたゴム、
プラスチック電力ケーブルのガス絶縁型中間接続部の具
体例の縦断面図、図２は本発明の第１の特徴であるケー
ブル導体部分のガスシール構造の要部の縦断面図であ
る。図面に示すように、ケーブルを段剥ぎしてケーブル
導体２を露出するとともに、ケーブル絶縁体１及び外部
半導電層３の処理を行い、さらにケーブル絶縁体１の端
部を削って段差部1aを設ける。その後、圧縮部4aの両端
に非圧縮円形部4bを有する導体接続スリーブ４を用いて
ケーブル導体２を圧縮接続する。なお、上記ケーブル絶
縁体１端部の段差部1aの径は導体接続スリーブ４の非圧
縮円形部4bとほぼ同径に削っておく。又導体接続スリー
ブ４の中央部には貫通孔4cを設けた。FIG. 1 shows a rubber formed by the method of the present invention;
FIG. 2 is a longitudinal sectional view of a specific example of a gas-insulated intermediate connection portion of a plastic power cable, and FIG. 2 is a longitudinal sectional view of a main part of a gas seal structure of a cable conductor portion which is a first feature of the present invention. As shown in the drawing, the cable is stripped to expose the cable conductor 2, the cable insulator 1 and the external semiconductive layer 3 are processed, and the end of the cable insulator 1 is further shaved to form a step portion 1 a. Provide. Thereafter, the cable conductor 2 is compression-connected using the conductor connection sleeve 4 having the non-compression circular portions 4b at both ends of the compression portion 4a. The diameter of the step portion 1a at the end of the cable insulator 1 is cut to be substantially the same as the diameter of the non-compressed circular portion 4b of the conductor connection sleeve 4. A through hole 4c is provided in the center of the conductor connection sleeve 4.
【００１２】ケーブル導体部分のガスシールとしては、
図２に示すように、導体接続スリーブ４の非圧縮円形部
4bの端部とケーブル絶縁体段差部1a端部の間のケーブル
導体２露出部上に、座巻き19として綿テープを上記非圧
縮円形部4bとほぼ同径まで巻いた後、非圧縮円形部4b上
からケーブル絶縁体段差部1a上にかけてポリイソブチレ
ンを主成分とするテープ21を巻回する。そして、その上
に例えば架橋ポリエチレン製の熱収縮チューブ13を収縮
させ、その両端を粘着剤付きのテフロンテープ14で２周
押え巻きしてガスシールした。なお、図示していない
が、ガス充填前に行う真空引きで上記粘着剤付きテフロ
ンテープ14が剥がれるのを防止する目的で、その上にガ
ラス繊維入りの粘着剤付ポリエステルテープで押え巻き
した。As a gas seal of a cable conductor portion,
As shown in FIG. 2, an uncompressed circular portion of the conductor connection sleeve 4
On the exposed portion of the cable conductor 2 between the end of the cable insulator 2b and the end of the cable insulator stepped portion 1a, a cotton tape is wound as an end winding 19 to approximately the same diameter as the uncompressed circular portion 4b, and then the uncompressed circular portion A tape 21 containing polyisobutylene as a main component is wound from above 4b to above the cable insulator step 1a. Then, for example, a heat-shrinkable tube 13 made of, for example, cross-linked polyethylene was shrunk thereon, and both ends of the heat-shrinkable tube 13 were pressed and wound twice with a Teflon tape 14 with an adhesive to seal the gas. Although not shown, in order to prevent the Teflon tape 14 with the adhesive from peeling off by vacuuming performed before gas filling, the Teflon tape 14 with the adhesive was pressed and wound thereon with a polyester tape with an adhesive containing glass fibers.
【００１３】図３は本発明の第２の特徴であるケーブル
外部半導層上のガスシール構造の要部の縦断面図であ
る。図面に示すように、ケーブル外部半導電層３上に綿
テープで座巻きした上に、フランジ15a を有する筒状体
15を配置し、この筒状体15の端部上からケーブルの外部
半導電層３上にかけて、ポリイソブチレンを主成分とす
るテープ21を巻回する。そして、その上に例えば架橋ポ
リエチレン製の熱収縮チューブ16を収縮させ、その両端
を粘着剤付きテフロンテープ17で２周押え巻きするとと
もに筒状体15のフランジ15a を外部ケース９のフランジ
18に固定してガスシールした。なお、ここでもケーブル
導体上と同じく、この上にガラス繊維入り粘着剤付きポ
リエステルテープで押え巻きした。上記図２及び図３の
実施例において、熱収縮チューブとして金属箔をサンド
イッチしたものを用いることで、厚み方向のガス透過を
少くすることができる。FIG. 3 is a longitudinal sectional view of a main part of a gas seal structure on a cable outer semiconductive layer which is a second feature of the present invention. As shown in the drawing, a cylindrical body having a flange 15a in addition to an end winding with a cotton tape on a cable outer semiconductive layer 3.
The tape 21 composed mainly of polyisobutylene is wound around the end of the tubular body 15 and over the outer semiconductive layer 3 of the cable. Then, a heat-shrinkable tube 16 made of, for example, cross-linked polyethylene is shrunk thereon, and both ends of the heat-shrinkable tube 16 are wrapped with a Teflon tape 17 with adhesive for two turns.
18 and gas-sealed. In this case, as in the case of the cable conductor, the wire was pressed and wrapped with a polyester tape with a glass fiber-containing adhesive. In the embodiment shown in FIGS. 2 and 3, by using a metal foil sandwiched as the heat-shrinkable tube, gas permeation in the thickness direction can be reduced.
【００１４】図４は本発明の第３の特徴である導体接続
スリーブと外部ケースの固定構造の説明図で、図１のＸ
−Ｘ断面図である。図１及び図４に示すように、導体接
続スリーブ４とコロナシールド７をリード線12で接続し
た後、導体接続スリーブ４の中央に設けた貫通孔4cに両
端にネジを設けた芯棒22を挿通し、絶縁スペーサ５と芯
棒22のネジ部を締めつけ固定する。そして中央フランジ
11にあけた孔に固定棒10を通し、絶縁スペーサ５とＯリ
ングを介して固定した。FIG. 4 is an explanatory view of a structure for fixing the conductor connection sleeve and the outer case, which is a third feature of the present invention.
It is -X sectional drawing. As shown in FIGS. 1 and 4, after the conductor connection sleeve 4 and the corona shield 7 are connected by the lead wire 12, a core rod 22 having screws at both ends in a through hole 4 c provided in the center of the conductor connection sleeve 4. Then, the screws of the insulating spacer 5 and the core rod 22 are tightened and fixed. And the central flange
A fixing rod 10 was passed through a hole made in 11, and was fixed via an insulating spacer 5 and an O-ring.
【００１５】次に外部ケース９、フランジ18をＯリング
を介して取り付けて図１のような接続部を形成した後、
外部ケース９内を真空引きし、 SF6ガスを封入し、3kgf
／cm2 Ｇの圧力を加えた。ここで用いたケーブルは 275
kV、１×1400mm2 のCVケーブルで、外部ケース内径は41
0mm であった。上記組立後の長期ヒートサイクル６ヶ月
後でもガス圧低下は0.2kgf／cm2 で、10％以上であっ
た。さらに、ガス圧低下防止として鉛箔をサンドイッチ
した架橋ポリエチレン製収縮チューブを用いた結果、上
述と同じ条件でガス圧低下は0.1kgf／cm2 と、半分に改
良できた。Next, after connecting the outer case 9 and the flange 18 via an O-ring to form a connection as shown in FIG.
The inside of the outer case 9 is evacuated, filled with SF 6 gas, and
/ Cm 2 pressure was applied of G. The cable used here is 275
kV, 1 × 1400mm 2 CV cable, outer case inner diameter is 41
It was 0 mm. Even after 6 months of the long-term heat cycle after the above assembly, the gas pressure drop was 0.2 kgf / cm 2 , which was 10% or more. Furthermore, as a result of using a crosslinked polyethylene shrink tube in which a lead foil was sandwiched to prevent the gas pressure from dropping, the gas pressure drop could be improved by half to 0.1 kgf / cm 2 under the same conditions as described above.
【００１６】[0016]
【発明の効果】以上説明したように、本発明のゴム、プ
ラスチック電力ケーブルのガス絶縁型中間接続部によれ
ば、Ｏリングシール部分等の精度の必要な部品を工場で
加工すれば、接続現場では多少精度悪く寸法出しをして
も、ガスシール性を悪くすることなく組立てが可能で、
作業時間の短縮、スキルレス作業に効果がある。従っ
て、地下のトンネル内、マンホール内等決して快適な作
業環境とはいえない現場でのゴム、プラスチック電力ケ
ーブルの接続工事に利用するとき極めて効果的である。As described above, according to the gas-insulated intermediate connection portion of the rubber or plastic power cable of the present invention, if parts requiring precision such as the O-ring seal portion are processed at the factory, the connection site Then, even if the dimensions are set with a somewhat poor accuracy, it is possible to assemble without deteriorating the gas sealing property,
Effective for shortening work time and skillless work. Therefore, the present invention is extremely effective when used for connecting rubber and plastic power cables in a tunnel, a manhole, or the like, which is not a comfortable working environment.
【図１】本発明の方法により形成されたゴム、プラスチ
ック電力ケーブルのガス絶縁中間接続部の具体例の縦断
面図である。FIG. 1 is a longitudinal sectional view of a specific example of a gas-insulated intermediate connection of a rubber and plastic power cable formed by the method of the present invention.
【図２】本発明の第１の特徴であるケーブル導体部分の
ガスシール構造の要部の縦断面図である。FIG. 2 is a longitudinal sectional view of a main part of a gas seal structure of a cable conductor portion which is a first feature of the present invention.
【図３】本発明の第２の特徴であるケーブル外部半導電
層上のガスシール構造の要部の縦断面図である。FIG. 3 is a longitudinal sectional view of a main part of a gas seal structure on a cable outer semiconductive layer which is a second feature of the present invention.
【図４】本発明の第３の特徴である導体接続スリーブと
外部ケースの固定構造の説明図で、図１のＸ−Ｘ断面図
である。FIG. 4 is an explanatory view of a structure for fixing a conductor connection sleeve and an outer case, which is a third feature of the present invention, and is a cross-sectional view taken along line XX of FIG. 1;
１ ケーブル絶縁体 ２ ケーブル導体 ３ ケーブル外部半導電層 ４ 導体接続スリーブ ５ 絶縁スペーサ ６ 絶縁スペーサの埋込電極 ７ コロナシールド ８ ストレスコーン ９ 外部ケース 10 絶縁スペーサ固定棒 11 中央フランジ 12 リード線 13，16 熱収縮チューブ 14，17 粘着性プラスチックテープ 15 フランジ付筒状体 18 フランジ 19，20 座巻き 21 ポリイソブチレンを主成分とするテープ 22 芯棒 DESCRIPTION OF SYMBOLS 1 Cable insulator 2 Cable conductor 3 Cable outer semiconductive layer 4 Conductor connection sleeve 5 Insulating spacer 6 Insulating spacer embedded electrode 7 Corona shield 8 Stress cone 9 Outer case 10 Insulating spacer fixing rod 11 Central flange 12 Lead wires 13,16 Heat shrink tubing 14, 17 Adhesive plastic tape 15 Flanged tubular body 18 Flange 19, 20 End winding 21 Tape consisting mainly of polyisobutylene 22 Core rod
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭50−12582（ＪＰ，Ａ) 特開 昭58−215910（ＪＰ，Ａ) 特開 昭61−244215（ＪＰ，Ａ) (58)調査した分野(Int.Cl.7，ＤＢ名) H02G 1/14 H01R 4/72 H01R 43/00 H02G 15/24 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-50-12582 (JP, A) JP-A-58-215910 (JP, A) JP-A-61-244215 (JP, A) (58) Field (Int.Cl. 7 , DB name) H02G 1/14 H01R 4/72 H01R 43/00 H02G 15/24
Claims (3)
接続部及び絶縁体の端末処理部を内包して外部ケースを
設け、該外部ケース内に絶縁ガスを充填したガス絶縁型
中間接続部において、導体接続スリーブの端部に非圧縮
円形部を設け、これと相対するケーブル絶縁体端部にこ
れとほぼ同径に削った段差部を設け、上記非圧縮円形部
端部とケーブル絶縁体段差部端部間を、ポリイソブチレ
ンを主成分とするテープを巻回して埋めた後、前記導体
接続スリーブの非圧縮円形部から絶縁体段差部上にわた
って熱収縮チューブ層を設け、熱収縮チューブの両端に
粘着テープを貼着することによりガスシールしたことを
特徴とするゴム、プラスチック電力ケーブルのガス絶縁
型中間接続部の形成方法。An external case is provided including a conductor connection portion of a rubber or plastic power cable and a terminal treatment portion of an insulator, and a conductor connection is provided at a gas-insulated intermediate connection portion in which the outer case is filled with an insulating gas. A non-compressed circular portion is provided at the end of the sleeve, and a stepped portion having approximately the same diameter is provided at the opposite end of the cable insulator, and the end of the non-compressed circular portion and the end of the cable insulator stepped portion are provided. After winding and filling a tape containing polyisobutylene as a main component, a heat-shrinkable tube layer is provided from the non-compressed circular portion of the conductor connection sleeve to the insulator step portion, and an adhesive tape is provided at both ends of the heat-shrinkable tube. A method for forming a gas-insulated intermediate connection portion of a rubber or plastic power cable, wherein the gas-sealed portion is attached by attaching a gas seal.
接続部及び絶縁体の端末処理部を内包して外部ケースを
設け、該外部ケース内に絶縁ガスを充填したガス絶縁型
中間接続部において、ケーブル外部半導電層の外側にフ
ランジを有する筒状体を設け、該筒状体の端部付近から
ケーブル外部半導電層上にわたってポリイソブチレンを
主成分とするテープの巻回層を設け、その上に熱収縮チ
ューブ層を設け、熱収縮チューブの両端に粘着テープを
貼着するとともに、前記筒状体はそのフランジを介して
外部ケースに気密に固着してガスシールしたことを特徴
とするゴム、プラスチック電力ケーブルのガス絶縁型中
間接続部の形成方法。2. An outer case including a conductor connection portion of a rubber or plastic power cable and a terminal treatment portion of an insulator, and an outer case filled with an insulating gas. A cylindrical body having a flange is provided outside the semiconductive layer, and a winding layer of a tape containing polyisobutylene as a main component is provided from near the end of the cylindrical body to the outer semiconductive layer of the cable. A rubber and plastic power supply, wherein a shrinkable tube layer is provided, an adhesive tape is attached to both ends of the heat shrinkable tube, and the cylindrical body is hermetically fixed to an outer case via a flange thereof and gas-sealed. A method for forming a gas-insulated intermediate connection portion of a cable.
接続部及び絶縁体の端末処理部を内包して外部ケースを
設け、該外部ケース内に絶縁ガスを充填したガス絶縁型
中間接続部において、導体接続スリーブの中央に貫通孔
を設け、この貫通孔に両端にネジ部を設けた芯棒を通
し、この外周に設けた２分割のコロナシールドを外部ケ
ースとの間に設ける絶縁スペーサのネジ部と螺合させて
一体に固着することにより、外部ケースと導体接続スリ
ーブとを融通可能に固定したことを特徴とするゴム、プ
ラスチック電力ケーブルのガス絶縁型中間接続部。3. A gas-insulated intermediate connection portion in which an outer case is provided including a conductor connection portion of a rubber or plastic power cable and a terminal treatment portion of an insulator, and the outer case is filled with an insulating gas. A through-hole is provided in the center of the sleeve, a core rod provided with a thread at both ends is passed through the through-hole, and a two-part corona shield provided on the outer periphery is provided between the sleeve and the outer case. A gas-insulated intermediate connection portion for a rubber or plastic power cable, wherein an outer case and a conductor connection sleeve are fixed in a flexible manner by being joined together and integrally fixed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10226994A JP3315522B2 (en) | 1994-04-15 | 1994-04-15 | Method for forming gas-insulated intermediate connection of rubber and plastic power cables |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10226994A JP3315522B2 (en) | 1994-04-15 | 1994-04-15 | Method for forming gas-insulated intermediate connection of rubber and plastic power cables |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07288911A JPH07288911A (en) | 1995-10-31 |
| JP3315522B2 true JP3315522B2 (en) | 2002-08-19 |
Family
ID=14322884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10226994A Expired - Fee Related JP3315522B2 (en) | 1994-04-15 | 1994-04-15 | Method for forming gas-insulated intermediate connection of rubber and plastic power cables |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3315522B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113824060A (en) * | 2021-10-19 | 2021-12-21 | 国网山东省电力公司济南市章丘区供电公司 | Junction box for live-wire work |
| CN114123093A (en) * | 2021-12-13 | 2022-03-01 | 重庆泰山电缆有限公司 | Cable gas intermediate joint and cable connection method |
-
1994
- 1994-04-15 JP JP10226994A patent/JP3315522B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH07288911A (en) | 1995-10-31 |
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