JPH0124856Y2 - - Google Patents
Info
- Publication number
- JPH0124856Y2 JPH0124856Y2 JP1982126180U JP12618082U JPH0124856Y2 JP H0124856 Y2 JPH0124856 Y2 JP H0124856Y2 JP 1982126180 U JP1982126180 U JP 1982126180U JP 12618082 U JP12618082 U JP 12618082U JP H0124856 Y2 JPH0124856 Y2 JP H0124856Y2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- electric field
- lead wire
- cylinder
- shrinkable
- 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
Links
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 14
- 230000005684 electric field Effects 0.000 claims description 12
- 230000000116 mitigating effect Effects 0.000 claims description 3
- 230000002040 relaxant effect Effects 0.000 claims 1
- 239000004020 conductor Substances 0.000 description 5
- 238000009413 insulation Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 230000007613 environmental effect Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Landscapes
- Cable Accessories (AREA)
Description
【考案の詳細な説明】
本考案は、電力ケーブルの絶縁補強すべき部
分、例えば中間或いは終端接続部等に被せられ
て、当該部分の電界を緩和する電界緩和用筒体に
関するものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electric field mitigation cylindrical body that is placed over a portion of a power cable to be insulated and reinforced, such as an intermediate or terminal connection portion, to alleviate the electric field in that portion.
近年、電力ケーブル中間或いは終端接続部等に
おいて、その処理の簡易化から、従来の絶縁テー
プ巻きによる絶縁補強に代えて電界緩和用筒体に
よる絶縁補強が採用されつつある。これは、上記
絶縁補強すべき部分の周上に109〜1013Ω−cm程の
体積抵抗率を持つ高誘電加熱収縮チユーブ（以下
SCチユーブと言う）を被せ、更にこれを加熱収
縮させて、当該部分の絶縁補強を達成するもので
あるが、これによると従来のテープ巻きによるも
のと比べて処理作業が大幅に簡易化され、従つ
て、今後益々普及されるであろうことが予想され
る。 In recent years, in order to simplify the process of power cable intermediate or terminal connections, insulation reinforcement using an electric field mitigation cylinder is being adopted instead of the conventional insulation reinforcement using insulation tape wrapping. This is done by placing a high dielectric heat-shrinkable tube (hereinafter referred to as a
This is done by covering the area with a SC tube (called an SC tube) and then heat-shrinking it to achieve insulation reinforcement of the area.This method greatly simplifies the processing work compared to the conventional method of wrapping with tape. Therefore, it is expected that it will become more and more popular in the future.
しかしながら、以上のSCチユーブ使用の場合、
当該SCチユーブと各ケーブルの外部半導電層及
び外部遮蔽層との電気的接続は、専ら当該SCチ
ユーブの加熱収縮時の自閉力に頼つている訳であ
るが、これだと当該部分に曲げが加えられたり、
ケーブルの膨張収縮が著しく大きくなつたり、或
いはSCチユーブ自身が熱的、環境的に老化した
りした場合に、上記SCチユーブの外部半導電層
及び外部遮蔽層に対する電気的接続が不十分とな
り、結局接続部における絶縁性能が低下してしま
う恐れがあつた。 However, when using the above SC tube,
The electrical connection between the SC tube and the external semiconducting layer and external shielding layer of each cable relies exclusively on the self-closing force of the SC tube when it is heated and shrunk, but with this, the cable will not bend. is added,
If the expansion and contraction of the cable increases significantly, or if the SC tube itself ages due to thermal or environmental factors, the electrical connection to the outer semiconducting layer and outer shielding layer of the SC tube will become insufficient, and eventually There was a risk that the insulation performance at the connection portion would deteriorate.
本考案の目的は前記した従来技術の欠点を解消
し、それ自身とケーブルの外部は半導電層及び外
部遮蔽層との電気的接続を大幅に改善できるSC
チユーブを提供することにある。 The purpose of the present invention is to eliminate the drawbacks of the prior art described above, and to significantly improve the electrical connection between the cable itself and the semiconducting layer and external shielding layer on the outside of the cable.
It is to provide tubes.
即ち、本考案の要旨は、SCチユーブの片端も
しくは両端に引出用リード線の一端を埋設せしめ
ると共に引出用リード線の少なくともSCチユー
ブ中に埋設せしめた部分の周上に半導電層を被覆
せしめたことにある。 That is, the gist of the present invention is to bury one end of the lead wire in one end or both ends of the SC tube, and to coat the periphery of at least the portion of the lead wire that is buried in the SC tube with a semiconductive layer. There is a particular thing.
次に、添付図面により本考案の実施例を説明す
るが、本考案の本実施例によつて限定解釈される
ものでないことは云うまでもない。 Next, embodiments of the present invention will be described with reference to the accompanying drawings, but it goes without saying that the present invention is not limited to the embodiments.
第１図は、SCチユーブ１の片端に非磁性金属
から成るリード線２を、当該SCチユーブ１の端
面から任意長埋設し、更に上記リード線２の埋設
された部分の全周に亘り半導電性ゴム・プラスチ
ツク体３で被覆してなるものを示す。特に図示し
ていないが、リード線２はSCチユーブ１の周方
向に任意間隔を置いて複数本設置されている。 In Figure 1, a lead wire 2 made of a non-magnetic metal is buried at one end of an SC tube 1 to a desired length from the end face of the SC tube 1, and a semi-conducting wire is further formed over the entire circumference of the buried portion of the lead wire 2. This figure shows one coated with a rubber/plastic body 3. Although not particularly shown, a plurality of lead wires 2 are installed at arbitrary intervals in the circumferential direction of the SC tube 1.
第３図は以上のSCチユーブ１を電力ケーブル
の終端接続部に用いた場合の例であり、この場
合、SCチユーブ１は、まずシース４、外部遮蔽
層５、外部半導電層６及び絶縁層７をそれ自身の
端より任意長さに亘つて順次段剥してなる電力ケ
ーブル８の当該外部半導電層６及び絶縁層７に亘
つて被せられ、更にこれを加熱収縮させることで
図示のように外部半導電層６及び絶縁層７周上に
密着させられ、更にリード線２を錫メツキ軟銅線
９等を用いて外部遮蔽層５に接続させられてい
る。１０はケーブル導電体、１１は端子金具であ
る。 FIG. 3 shows an example in which the above SC tube 1 is used as a terminal connection part of a power cable. 7 is sequentially peeled off from the end of the power cable 8 over an arbitrary length, covering the external semiconducting layer 6 and the insulating layer 7, and further heat-shrinking it to form the power cable 8 as shown in the figure. The lead wire 2 is closely attached to the periphery of the external semiconductive layer 6 and the insulating layer 7, and the lead wire 2 is connected to the external shielding layer 5 using a tin-plated annealed copper wire 9 or the like. 10 is a cable conductor, and 11 is a terminal fitting.
第４図は両端にリード線２を設置した別の本実
施例SCチユーブ１００を電力ケーブルの中間接
続部に用いた場合の例である。図中１２は導体接
続管、１３は加熱収縮性絶縁チユーブ、１４は加
熱収縮性半導電チユーブ、１５は防水コンパウン
ドである。尚、ここで上記SCチユーブ１００、
絶縁チユーブ１３及び半導電チユーブ１４は、
夫々導体１０の接続に先立つていずれか一方の電
力ケーブル８の周上に挿通されていて、導体１０
の接続後、当該導体１０の接続部周上に移動さ
れ、更に加熱収縮されて図示のようにセツトされ
る。 FIG. 4 shows an example in which another SC tube 100 of this embodiment having lead wires 2 installed at both ends is used as an intermediate connection part of a power cable. In the figure, 12 is a conductor connecting tube, 13 is a heat-shrinkable insulating tube, 14 is a heat-shrinkable semiconducting tube, and 15 is a waterproof compound. In addition, here, the above SC tube 100,
The insulating tube 13 and the semiconducting tube 14 are
Each conductor 10 is inserted around the circumference of one of the power cables 8 prior to connection of the conductor 10.
After the connection, the conductor 10 is moved onto the periphery of the connection part, further heat-shrinked, and set as shown in the figure.
第２図は、以上のリード線２に代えて、複数本
の金属線２００を埋設した加熱収縮性導電チユー
ブ１６を片端に設置した。更に別の本実施例SC
チユーブ３００を示すものである。 In FIG. 2, instead of the above lead wire 2, a heat-shrinkable conductive tube 16 in which a plurality of metal wires 200 are embedded is installed at one end. Yet another example SC
A tube 300 is shown.
このようにして構成される本実施例SCチユー
ブによれば電力ケーブルの外部半導電層及び外部
遮蔽層に対する電気的接続を、それ自身の自閉力
による接続に加えてリード線による接続の二重構
造とすることができるので、前記の電気的接続の
長期信頼性を大幅に向上させ得る。特に、リード
線による接続の場合、SCチユーブの自閉力に比
較して曲げによる影響及びSCチユーブの熱的、
環境的老化による影響が格別少なく、その意味で
も前記長期信頼性は確実に向上し得る。 According to the SC tube of this embodiment configured in this way, the electrical connection to the external semiconducting layer and the external shielding layer of the power cable can be made by double connection by the lead wire in addition to the connection by its own self-closing force. structure, the long-term reliability of the electrical connection can be significantly improved. In particular, in the case of connections using lead wires, the effects of bending and the SC tube's thermal
The influence of environmental aging is extremely small, and in that sense, the long-term reliability can be reliably improved.
更に、SCチユーブに埋設されたリード線の全
周に亘り、半導電性ゴム・プラスチツク体を設け
たことから、SCチユーブとリード線間の密着性
が一層改善され、これら両者間において電気的欠
陥が発生しないと言う利点を奏し得る。その意味
でも前記長期信頼性は一層向上し得る。 Furthermore, since a semiconductive rubber/plastic material is provided around the entire circumference of the lead wire buried in the SC tube, the adhesion between the SC tube and the lead wire is further improved, and electrical defects are eliminated between the two. This has the advantage that it does not occur. In this sense, the long-term reliability can be further improved.
第１図は本考案の電界緩和用筒体の一実施例説
明図、第２図は他の実施例説明図、第３図及び第
４図は本考案の電界緩和用筒体を用いて構成した
電力ケーブルの終端及び中間接続部の一実施例説
明図である。
１：SCチユーブ（電界緩和用筒体）、２：引出
用リード線、３：半導電性ゴム・プラスチツク
体。
Fig. 1 is an explanatory diagram of one embodiment of the electric field relaxation cylinder of the present invention, Fig. 2 is an explanatory diagram of another embodiment, and Figs. 3 and 4 are constructed using the electric field relaxation cylinder of the present invention. FIG. 2 is an explanatory diagram of an embodiment of a terminal end and an intermediate connection portion of a power cable. 1: SC tube (cylindrical body for electric field relaxation), 2: Lead wire for extraction, 3: Semiconductive rubber/plastic body.
Claims (1)
れて当該部分の電界を緩和する高誘電加熱収縮
性電界緩和用筒体において、その片端もしくは
両端に引出用リード線の一端を埋設せしめると
共に引出用リード線の少なくとも電界緩和用筒
体中に埋設せしめた部分の周上に半導電層を被
覆せしめてなることを特徴とする電界緩和用筒
体。 ２ 電界緩和用筒体が体積抵抗率109〜1013Ω−cm
の加熱収縮性筒体である実用新案登録請求の範
囲第１項記載の高誘電加熱収縮性電界緩和用筒
体。[Scope of Claim for Utility Model Registration] 1. A highly dielectric heat-shrinkable electric field mitigation cylinder that is placed over a portion of a power cable that is to be insulated and reinforced to alleviate the electric field in that portion, which has a lead wire attached to one or both ends thereof. A cylindrical body for electric field relaxation, characterized in that one end of the lead wire is buried, and a semiconductive layer is coated on the periphery of at least the portion of the lead wire that is buried in the cylindrical body for electric field relaxation. 2 The electric field relaxation cylinder has a volume resistivity of 10 9 to 10 13 Ω-cm
A highly dielectric heat-shrinkable electric field relaxing cylinder according to claim 1, which is a heat-shrinkable cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12618082U JPS5930637U (en) | 1982-08-20 | 1982-08-20 | Cylindrical body for electric field relaxation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP12618082U JPS5930637U (en) | 1982-08-20 | 1982-08-20 | Cylindrical body for electric field relaxation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5930637U JPS5930637U (en) | 1984-02-25 |
| JPH0124856Y2 true JPH0124856Y2 (en) | 1989-07-26 |
Family
ID=30287008
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12618082U Granted JPS5930637U (en) | 1982-08-20 | 1982-08-20 | Cylindrical body for electric field relaxation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5930637U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2554646Y2 (en) * | 1992-05-16 | 1997-11-17 | 古河電気工業株式会社 | Connection part of cable with high voltage branch |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5041021U (en) * | 1973-08-13 | 1975-04-25 |
-
1982
- 1982-08-20 JP JP12618082U patent/JPS5930637U/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5041021U (en) * | 1973-08-13 | 1975-04-25 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5930637U (en) | 1984-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3717717A (en) | Shrinkable cable joint sleeve, cable joint employing the same, and method of forming a cable joint | |
| JPH0124856Y2 (en) | ||
| JPS5845143B2 (en) | Cable connection | |
| JP2001231123A (en) | Water-tight normal temeperature thermo-shrink insulation cylinder and cable connector using the same | |
| JPH0226189Y2 (en) | ||
| JPS6322615Y2 (en) | ||
| JP2639649B2 (en) | Method of forming connection part of power cable | |
| JPH01129737A (en) | Insulation of high voltage rotating electric machine | |
| JPS6015390Y2 (en) | Power cable insulation connection | |
| JP3281557B2 (en) | Power cable prefabricated insulated connection | |
| JPH028367Y2 (en) | ||
| JP2003174718A (en) | Tape-wound joint of plastic insulated power cable | |
| JPS6029296Y2 (en) | Power cable insulation connection | |
| JPS5814666Y2 (en) | Plug-in straight connection for power cables | |
| JPS5939794Y2 (en) | Cable terminal | |
| JPS6015392Y2 (en) | Solderless connection of power cable with water barrier layer | |
| JPH0640430Y2 (en) | Water-sealed underwater motor outlet connection structure | |
| JPS63190512A (en) | Joint construction of power cable submerged in high temperature water | |
| JPH0133913B2 (en) | ||
| JPH0613344U (en) | Adapter for drawing out the ground wire of the power cable connection | |
| JPH076676Y2 (en) | Cable terminal | |
| JP2000059976A (en) | Crosslinked polyethylene insulator type connective portion of power cables | |
| JPS59159133U (en) | power cable junction box | |
| JPH01105484A (en) | Formation of cable junction | |
| JPS5886815A (en) | Method of connecting power cable connector |