JPH07193965A - Power cable joint box - Google Patents
Power cable joint boxInfo
- Publication number
- JPH07193965A JPH07193965A JP33718093A JP33718093A JPH07193965A JP H07193965 A JPH07193965 A JP H07193965A JP 33718093 A JP33718093 A JP 33718093A JP 33718093 A JP33718093 A JP 33718093A JP H07193965 A JPH07193965 A JP H07193965A
- Authority
- JP
- Japan
- Prior art keywords
- power cable
- joint box
- cable joint
- cables
- protective
- 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.)
- Withdrawn
Links
- 230000001681 protective effect Effects 0.000 claims abstract description 26
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000004020 conductor Substances 0.000 description 5
- 229920003020 cross-linked polyethylene Polymers 0.000 description 5
- 239000004703 cross-linked polyethylene Substances 0.000 description 5
- 238000004804 winding Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004078 waterproofing Methods 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、電力ケーブル接続箱
に係り、特に遮蔽層を有する電力ケーブルを接続する電
力ケーブル接続箱に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power cable junction box, and more particularly to a power cable junction box for connecting a power cable having a shielding layer.
【０００２】[0002]
【従来の技術】従来から、高電圧電流を送電する大型電
力ケーブルとして、ＣＶケーブル（架橋ポリエチレン電
力ケーブル）が用いられている。ＣＶケーブルは図２に
示すように導体３２に内部半導電層３３を介して架橋ポ
リエチレンから成る絶縁層３４を被覆し、さらに外部半
導電層３５や遮蔽層３６を介してシース３７で被覆した
ものである。2. Description of the Related Art Conventionally, a CV cable (crosslinked polyethylene power cable) has been used as a large power cable for transmitting a high voltage current. In the CV cable, as shown in FIG. 2, a conductor 32 is covered with an insulating layer 34 made of crosslinked polyethylene via an inner semiconductive layer 33, and further covered with a sheath 37 via an outer semiconductive layer 35 and a shielding layer 36. Is.
【０００３】このようなＣＶケーブル３１を接続するた
めに、図３に示すような電力ケーブル接続箱４１が使用
されている。電力ケーブル接続箱４１はマンホール内な
ど電力ケーブルの接続部が冠水する虞がある場所に適す
るもので、おもに銅から成る保護管４１Ａ、４１Ｂによ
り水密構造としたものである。具体的には２本のＣＶケ
ーブル３１Ａ及びＣＶケーブル３１Ｂに、予め保護管４
１Ａ及び保護管４１Ｂをそれぞれ填め込み、このＣＶケ
ーブル３１Ａ、３１Ｂのシース３７Ａ、３７Ｂ、遮蔽層
３６Ａ、３６Ｂ、外部半導電層３５Ａ、３５Ｂ、絶縁層
３４Ａ、３４Ｂ及び内部半導電層３３Ａ、３３Ｂを順
次、段剥ぎしたＣＶケーブル３１Ａ、３１Ｂの導体３２
Ａ、３２Ｂを接続管３８を用いて圧縮接続した後、外部
半導電層３５Ａ、３５Ｂの部分から半導電テープ３９等
を巻着させていく。ＣＶケーブル３１Ａ、３１Ｂの接続
部を半導電テープ３９等で巻着後、ＣＶケーブル３１
Ａ、３１Ｂの遮蔽層３６Ａ、３６Ｂに接地線４２Ａ、４
２Ｂを接続し、保護管４１Ａには接地線４２Ａを、保護
管４１Ｂには接地線４２Ｂをそれぞれ接続する。To connect such a CV cable 31, a power cable connection box 41 as shown in FIG. 3 is used. The power cable connection box 41 is suitable for a place where the connection portion of the power cable may be submerged, such as in a manhole, and has a watertight structure mainly using protection tubes 41A and 41B made of copper. Specifically, the protection tube 4 is previously attached to the two CV cables 31A and 31B.
1A and a protective tube 41B are respectively inserted, and sheaths 37A and 37B, shielding layers 36A and 36B, outer semiconductive layers 35A and 35B, insulating layers 34A and 34B and inner semiconductive layers 33A and 33B of the CV cables 31A and 31B are inserted. The conductors 32 of the CV cables 31A and 31B that have been stripped off in order
After A and 32B are compressed and connected using the connecting pipe 38, the semiconductive tape 39 and the like are wound around the outer semiconductive layers 35A and 35B. After winding the connecting portions of the CV cables 31A and 31B with the semiconductive tape 39 or the like, the CV cable 31
A, 31B shielding layers 36A, 36B are connected to ground lines 42A, 4A
2B are connected, the protective tube 41A is connected to the ground wire 42A, and the protective tube 41B is connected to the ground wire 42B.
【０００４】接地線４２Ａ、４２Ｂが接続された保護管
４１Ａ、４１Ｂは嵌合後、嵌合部をネジ４４で固定し、
さらに防水テープを巻着して防水処理を行う。なお、保
護管４１Ｂには接地端子座４３が設けられており、この
接地端子座４３で外部接地を行っている。After the protection tubes 41A and 41B to which the ground wires 42A and 42B are connected, the fitting portions are fixed with screws 44,
In addition, a waterproof tape is wrapped around it for waterproofing. The protective tube 41B is provided with a ground terminal seat 43, and the ground terminal seat 43 is used for external grounding.
【０００５】[0005]
【発明が解決しようとする課題】ところで、ＣＶケーブ
ル３１Ａ、３１Ｂの接続においては、接地端子座４３で
外部接地を行っているが、保護管４１Ａ、４１Ｂの嵌合
部を接続後固定するためにネジ４４を使用しているの
で、ネジ止め部の通電容量が非常に小さくなっていた。In connection with the connection of the CV cables 31A and 31B, the grounding terminal seat 43 is used for external grounding. However, in order to fix the fitting portions of the protective tubes 41A and 41B after the connection, Since the screw 44 is used, the current-carrying capacity of the screw fastening portion was extremely small.
【０００６】このような問題点に対して図４に示すよう
なフランジ方式の電力ケーブル接続箱４５が提案され、
使用されている。このフランジ方式の電力ケーブル接続
箱４５は、保護管４５Ａ、４５Ｂの接続箇所にそれぞれ
フランジ部４６Ａ、４６Ｂが設けられているので、通電
容量を十分に確保することができる。しかし、保護管４
５Ａ、４５Ｂの構造上、製品コストが約２倍になる問題
点があった。In order to solve such a problem, a flange type power cable connection box 45 as shown in FIG. 4 has been proposed.
in use. In this flange type power cable connection box 45, since the flange portions 46A and 46B are provided at the connection points of the protection tubes 45A and 45B, respectively, a sufficient current carrying capacity can be secured. However, protective tube 4
Due to the structure of 5A and 45B, there is a problem that the product cost is about doubled.
【０００７】[0007]
【目的】この発明は、このような従来の問題点を解決す
るためになされたもので、嵌合部をネジ等で固定する電
力ケーブル接続箱で十分な通電容量を確保する電力ケー
ブル接続箱を提供することを目的としている。An object of the present invention is to solve such a conventional problem, and to provide a power cable connection box which secures a sufficient energizing capacity in a power cable connection box in which a fitting portion is fixed with screws or the like. It is intended to be provided.
【０００８】[0008]
【課題を解決するための手段】本発明の電力ケーブル接
続箱は、電力ケーブルを接続する一対の保護管と、一対
の保護管の何れか一方に設けられた接地端子座と、電力
ケーブルの遮蔽層にそれぞれ接続された接地線とを備え
た電力ケーブル接続箱において、各接地線は接地端子座
が設けられた一方の保護管に接続されているものであ
る。A power cable junction box according to the present invention includes a pair of protective tubes for connecting the power cables, a ground terminal seat provided on either one of the pair of protective tubes, and a shield for the power cable. In a power cable junction box having a ground wire connected to each layer, each ground wire is connected to one protection tube provided with a ground terminal seat.
【０００９】[0009]
【作用】電力ケーブル接続箱である一対の保護管のう
ち、接地端子座が設けられた保護管に、一対の保護管に
て接続される各電力ケーブルの遮蔽層を接地線を介して
接続することにより十分な通電容量を確保することがで
き、さらにこれに伴い電力ケーブル接続箱の縮小化を図
ることができる。[Operation] Of the pair of protective tubes which are the electric power cable connection box, the shield layer of each electric power cable connected by the pair of protective tubes is connected to the protective tube provided with the ground terminal seat through the ground wire. As a result, a sufficient current carrying capacity can be secured, and accordingly, the size of the power cable connection box can be reduced.
【００１０】[0010]
【実施例】以下、本発明の電力ケーブル接続箱の一実施
例について図面を参照して説明する。本発明の電力ケー
ブル接続箱は図１に示すように、ＣＶケーブル（架橋ポ
リエチレン電力ケーブル）１１Ａ、１１Ｂのそれぞれの
導体１２Ａ、１２Ｂ上に設けられた内部半導電層１３
Ａ、１３Ｂ、架橋ポリエチレン（ＸＬＰＥ）等の絶縁層
１４Ａ、１４Ｂ、外部半導電層１５Ａ、１５Ｂ、遮蔽層
１６Ａ、１６Ｂ及びシース１７Ａ、１７Ｂが順次、段剥
ぎされ、その導体１２Ａ、１２Ｂを接続管１８を用いて
圧縮接続し、さらに外部半導電層１５Ａ、１５Ｂの部分
から半導電テープ１９等を巻着させて成る接続部２０が
保護管１Ａ、１Ｂにより覆設されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the power cable junction box of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the power cable junction box of the present invention has an internal semiconductive layer 13 provided on conductors 12A and 12B of CV cables (crosslinked polyethylene power cables) 11A and 11B, respectively.
A, 13B, insulating layers 14A, 14B such as cross-linked polyethylene (XLPE), outer semiconductive layers 15A, 15B, shielding layers 16A, 16B and sheaths 17A, 17B are sequentially stripped off, and the conductors 12A, 12B are connected to a connecting pipe. A connecting portion 20 formed by compression connection using 18 and winding a semiconductive tape 19 or the like from the outer semiconductive layers 15A and 15B is covered with the protective tubes 1A and 1B.
【００１１】保護管１Ａ、１Ｂはマンホール内など電力
ケーブルの接続部が冠水する場所に適するもので、銅管
により水密構造としたものである。また、ＣＶケーブル
１１Ａ、１１Ｂの遮蔽層１６Ａ、１６Ｂを外部接地する
ために、保護管１Ａ、１Ｂに挿入されたＣＶケーブル１
１Ａ、１１Ｂの遮蔽層１６Ａ、１６Ｂと、保護管１Ｂの
内壁とを接地線２Ａ、２Ｂを介して接続する。なお、保
護管１Ｂには接地端子座３が設けられている。The protective tubes 1A and 1B are suitable for locations where the connection portion of the power cable is submerged, such as in manholes, and have a watertight structure using copper tubes. In addition, the CV cable 1 inserted in the protective tubes 1A and 1B for externally grounding the shielding layers 16A and 16B of the CV cables 11A and 11B.
The shield layers 16A and 16B of 1A and 11B and the inner wall of the protective tube 1B are connected to each other via ground lines 2A and 2B. The protective tube 1B is provided with a ground terminal seat 3.
【００１２】このように構成される電力ケーブル接続箱
１の組立ては、２本のＣＶケーブル１１Ａ及びＣＶケー
ブル１１Ｂに、予め保護管１Ａ及び保護管１Ｂをそれぞ
れ填め込んだ後、ＣＶケーブル１１Ａ、１１Ｂのシース
１７Ａ、１７Ｂ、遮蔽層１６Ａ、１６Ｂ、外部半導電層
１５Ａ、１５Ｂ、絶縁層１４Ａ、１４Ｂ及び内部半導電
層１３Ａ、１３Ｂを順次、段剥ぎし、露出された導体１
２Ａ、１２Ｂを接続管１８を用いて圧縮接続し、絶縁層
１４Ａの部分から絶縁層１４Ｂの部分まで半導電テープ
１９等を巻着させていく。In assembling the power cable junction box 1 having the above-mentioned structure, the CV cables 11A and 11B are preliminarily fitted into the two CV cables 11A and CV cables 11B, respectively. The sheaths 17A, 17B, the shielding layers 16A, 16B, the outer semiconductive layers 15A, 15B, the insulating layers 14A, 14B, and the inner semiconductive layers 13A, 13B are successively stepped off to expose the exposed conductor 1.
2A and 12B are compression-connected using a connecting pipe 18, and a semiconductive tape 19 or the like is wound from the insulating layer 14A portion to the insulating layer 14B portion.
【００１３】ＣＶケーブル１１Ａ、１１Ｂの接続部２０
を半導電テープ１９等で巻着後、ＣＶケーブル１１Ａ、
１１Ｂの遮蔽層１６Ａ、１６Ｂに接地線２Ａ、２Ｂをそ
れぞれ接続し、この接地線２Ａ、２Ｂを保護管１Ｂの内
壁に接続する。保護管１Ｂに接地線２Ａ、２Ｂを接続し
た後、この保護管１Ｂと保護管１Ａとを嵌合し、嵌合部
をネジ４で固定する。この際、嵌合された保護管１Ａ、
１Ｂ内を防水構造にするために、保護管１Ａ、１Ｂ内に
防水混和物を注入し、さらに防水テープを巻着して防水
処理を施す。Connection part 20 of CV cables 11A and 11B
After winding with a semi-conductive tape 19 etc., CV cable 11A,
Ground lines 2A and 2B are connected to the shielding layers 16A and 16B of 11B, respectively, and the ground lines 2A and 2B are connected to the inner wall of the protective tube 1B. After connecting the ground wires 2A and 2B to the protection tube 1B, the protection tube 1B and the protection tube 1A are fitted together, and the fitting portion is fixed with the screw 4. At this time, the fitted protective tube 1A,
In order to make the inside of 1B waterproof, a waterproof mixture is injected into the protective tubes 1A and 1B, and a waterproof tape is wound around to carry out waterproofing.
【００１４】このように接地端子座３が設けられた保護
管１Ｂの内壁に、ＣＶケーブル１１Ａ、１１Ｂの遮蔽層
１６Ａ、１６Ｂに接続された接地線２Ａ、２Ｂを直接接
続しているので、十分な通電容量を確保することができ
る。Since the ground wires 2A and 2B connected to the shield layers 16A and 16B of the CV cables 11A and 11B are directly connected to the inner wall of the protective tube 1B provided with the ground terminal seat 3 as described above, it is sufficient. It is possible to secure a sufficient current carrying capacity.
【００１５】[0015]
【発明の効果】以上の実施例からも明らかなように、本
発明による電力ケーブル接続箱は、電力ケーブルを接続
する一対の保護管と、一対の保護管の何れか一方に設け
られた接地端子座と、電力ケーブルの遮蔽層にそれぞれ
接続された接地線とを備えた電力ケーブル接続箱におい
て、各接地線は接地端子座が設けられた一方の保護管に
接続されているので、十分な通電容量を確保することが
できる。また、十分な通電容量を確保するためにフラン
ジ部を設ける必要がなくなるので、電力ケーブル接続箱
の縮小化を図ることができ、さらにこれに伴い生産コス
トを大幅に削減することができる。As is apparent from the above embodiments, the power cable junction box according to the present invention has a pair of protective tubes for connecting the power cables and a ground terminal provided on either one of the pair of protective tubes. In a power cable junction box that includes a seat and a ground wire that is connected to the shielding layer of the power cable, each ground wire is connected to one protection tube that is provided with a ground terminal seat, so that sufficient energization is possible. Capacity can be secured. Further, since it is not necessary to provide the flange portion in order to secure a sufficient current carrying capacity, it is possible to reduce the size of the power cable connection box, and further, it is possible to significantly reduce the production cost.
【図１】本発明の電力ケーブル接続箱の一実施例を示す
図。FIG. 1 is a diagram showing an embodiment of a power cable junction box of the present invention.
【図２】電力ケーブルの断面図。FIG. 2 is a cross-sectional view of a power cable.
【図３】従来の電力ケーブル接続箱を示す図。FIG. 3 is a diagram showing a conventional power cable connection box.
【図４】従来の電力ケーブル接続箱を示す図。FIG. 4 is a view showing a conventional power cable connection box.
１・・・電力ケーブル接続箱 １Ａ、１Ｂ・・・保護管 ２Ａ、２Ｂ・・・接地線 ３・・・接地端子座 ４・・・ネジ 1 ... Power cable connection box 1A, 1B ... Protective tube 2A, 2B ... Ground wire 3 ... Ground terminal seat 4 ... Screw
Claims (1)
前記一対の保護管の何れか一方に設けられた接地端子座
と、前記電力ケーブルの遮蔽層にそれぞれ接続された接
地線とを備えた電力ケーブル接続箱において、前記各接
地線は前記接地端子座が設けられた一方の前記保護管に
接続されていることを特徴とする電力ケーブル接続箱。1. A pair of protective tubes for connecting a power cable,
In a power cable junction box including a ground terminal seat provided on any one of the pair of protection tubes and a ground wire connected to a shielding layer of the power cable, each ground wire is the ground terminal seat. A power cable connection box, wherein the power cable connection box is connected to one of the protection tubes provided with.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33718093A JPH07193965A (en) | 1993-12-28 | 1993-12-28 | Power cable joint box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33718093A JPH07193965A (en) | 1993-12-28 | 1993-12-28 | Power cable joint box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07193965A true JPH07193965A (en) | 1995-07-28 |
Family
ID=18306206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33718093A Withdrawn JPH07193965A (en) | 1993-12-28 | 1993-12-28 | Power cable joint box |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07193965A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014039443A (en) * | 2012-08-20 | 2014-02-27 | Viscas Corp | Power cable connection structure and insulation member |
| JP2015142477A (en) * | 2014-01-30 | 2015-08-03 | 昭和電線ケーブルシステム株式会社 | Outer protective tube and intermediate connection part of power cable |
| CN104821540A (en) * | 2014-01-30 | 2015-08-05 | 昭和电线电缆系统株式会社 | Protective pipe and intermediate connection section of power cable |
| CN104821538A (en) * | 2014-01-30 | 2015-08-05 | 昭和电线电缆系统株式会社 | Outer protective pipe, inner protective pipe and intermediate connection section of power cable |
| CN108599059A (en) * | 2018-06-29 | 2018-09-28 | 苏州优康通信设备有限公司 | A kind of wire or cable terminal box with anti-interference function |
| CN108767781A (en) * | 2018-06-29 | 2018-11-06 | 苏州优康通信设备有限公司 | A kind of detachable anti-interference cable terminal box |
| CN108899832A (en) * | 2018-06-29 | 2018-11-27 | 苏州优康通信设备有限公司 | A kind of fire-retardant terminal box |
-
1993
- 1993-12-28 JP JP33718093A patent/JPH07193965A/en not_active Withdrawn
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2014039443A (en) * | 2012-08-20 | 2014-02-27 | Viscas Corp | Power cable connection structure and insulation member |
| JP2015142477A (en) * | 2014-01-30 | 2015-08-03 | 昭和電線ケーブルシステム株式会社 | Outer protective tube and intermediate connection part of power cable |
| CN104821540A (en) * | 2014-01-30 | 2015-08-05 | 昭和电线电缆系统株式会社 | Protective pipe and intermediate connection section of power cable |
| CN104821538A (en) * | 2014-01-30 | 2015-08-05 | 昭和电线电缆系统株式会社 | Outer protective pipe, inner protective pipe and intermediate connection section of power cable |
| CN104821540B (en) * | 2014-01-30 | 2018-07-03 | 昭和电线电缆系统株式会社 | The middle interconnecting piece of protection pipe and power cable |
| CN104821538B (en) * | 2014-01-30 | 2018-07-03 | 昭和电线电缆系统株式会社 | Outside protection pipe, inside protection pipe and power cable middle interconnecting piece |
| CN108599059A (en) * | 2018-06-29 | 2018-09-28 | 苏州优康通信设备有限公司 | A kind of wire or cable terminal box with anti-interference function |
| CN108767781A (en) * | 2018-06-29 | 2018-11-06 | 苏州优康通信设备有限公司 | A kind of detachable anti-interference cable terminal box |
| CN108899832A (en) * | 2018-06-29 | 2018-11-27 | 苏州优康通信设备有限公司 | A kind of fire-retardant terminal box |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20010306 |