JP2000090998A - Superconducting cable joint - Google Patents
Superconducting cable jointInfo
- Publication number
- JP2000090998A JP2000090998A JP10257947A JP25794798A JP2000090998A JP 2000090998 A JP2000090998 A JP 2000090998A JP 10257947 A JP10257947 A JP 10257947A JP 25794798 A JP25794798 A JP 25794798A JP 2000090998 A JP2000090998 A JP 2000090998A
- Authority
- JP
- Japan
- Prior art keywords
- connector
- core
- cable
- joint
- conductor
- 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.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E40/00—Technologies for an efficient electrical power generation, transmission or distribution
- Y02E40/60—Superconducting electric elements or equipment; Power systems integrating superconducting elements or equipment
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は超電導ケーブルの接
続構造に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting cable connection structure.
【０００２】[0002]
【従来の技術】従来の超電導ケーブルのジョイントとし
ては特開昭53-55793号公報記載の技術が知られている。
これは、冷却時のケーブル長手方向の熱収縮を吸収する
ために、導体間を伸縮可能な接続導体で接続し、この接
続導体の外周に絶縁補強筒をはめ込んで、絶縁補強筒に
対して各ケーブルをスライド自在に構成したジョイント
である。2. Description of the Related Art As a conventional superconducting cable joint, a technique disclosed in Japanese Patent Application Laid-Open No. 53-55793 is known.
In order to absorb the heat shrinkage in the longitudinal direction of the cable during cooling, the conductors are connected by an extendable connection conductor, and an insulation reinforcing cylinder is fitted around the outer periphery of the connection conductor. This is a joint that allows the cable to slide freely.
【０００３】[0003]
【発明が解決しようとする課題】しかし、このような構
造のジョイントは３芯一括型の超電導ケーブルに適用す
ることが難しい。３芯一括型の超電導ケーブルは一つの
断熱管に３芯のケーブルコアを収納している。上記構造
のジョイントにより各コアを接続した場合、各芯毎のジ
ョイントはスライドにより相対的位置が固定されず、冷
却によるケーブル収縮時に相対位置が変化するため、ジ
ョイント同士が衝突して破損するおそれがある。However, it is difficult to apply a joint having such a structure to a three-core superconducting cable. The three-core superconducting cable has a three-core cable core housed in one heat insulating tube. When each core is connected by the joint of the above structure, the relative position of the joint of each core is not fixed by sliding, and the relative position changes when the cable contracts due to cooling, so there is a risk that the joints may collide and break. is there.
【０００４】また、３芯一括型ケーブルの熱収縮吸収
は、図３に示すように、３芯のコア20をより合わせたも
のの外径Ｄを小さく変化させることで実現されるが、そ
のためにはケーブル端部で張力を負荷する必要がある。
しかし、前述した従来のジョイントではケーブルがスラ
イドするためケーブルに張力を負荷することができな
い。As shown in FIG. 3, the heat shrinkage absorption of the three-core collective cable is realized by changing the outer diameter D of the three-core core 20 to be small. It is necessary to apply tension at the cable end.
However, in the above-mentioned conventional joint, since the cable slides, tension cannot be applied to the cable.
【０００５】[0005]
【課題を解決するための手段】本発明は上記の課題を解
消するもので、その特徴は、多芯一括型超電導ケーブル
のジョイントにおいて、各芯の導体が接続される導体接
続体と、各芯の遮蔽層が接続されると共に導体接続体を
内部に保持した遮蔽接続体とを具え、各芯に接続される
遮蔽接続体がケーブルの伸縮に対して移動しないように
固定されていることにある。SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problems, and is characterized in that, in a joint of a multi-core batch type superconducting cable, a conductor connection body to which conductors of each core are connected, And a shielded connection body that holds the conductor connection body inside, and the shielded connection body connected to each core is fixed so as not to move with respect to expansion and contraction of the cable. .
【０００６】遮蔽接続体の固定は、例えば断熱接続体内
に各遮蔽接続体を固定し、この断熱接続体を大地などの
不動体に固定すればよい。このような構成によれば、ジ
ョイント箇所で各芯のケーブルコアは位置が固定される
ため、冷却に伴う熱収縮時、ケーブルコアに張力を付与
することができ、ケーブルコアをより合わせたものの外
径を小さく変化させることで熱収縮分を吸収することが
できる。For fixing the shielded connection, for example, each shielded connection may be fixed in the heat insulation connection, and the heat insulation connection may be fixed to an immovable body such as the ground. According to such a configuration, since the positions of the cable cores of the respective cores are fixed at the joints, tension can be applied to the cable cores during heat shrinkage due to cooling, so that the cable cores are twisted together. By making the diameter small, heat shrinkage can be absorbed.
【０００７】ここで、導体接続体と遮蔽接続体との間の
電気絶縁は、導体接続体を遮蔽接続体内に保持する絶縁
支持体と、遮蔽接続体と導体接続体との間の空間に充填
される冷媒とで行うことが好ましい。絶縁支持体の材料
としては繊維強化プラスチックなどが好適である。Here, the electrical insulation between the conductor connector and the shield connector is performed by filling an insulating support for holding the conductor connector in the shield connector and a space between the shield connector and the conductor connector. It is preferably performed with a cooling medium. As a material of the insulating support, a fiber reinforced plastic or the like is preferable.
【０００８】また、導体接続体および遮蔽接続体には超
電導材料が複合されていることが望ましい。導体接続体
および遮蔽接続体の材質には、冷却に伴うケーブル収縮
時の熱応力に耐えられるよう、銅，ステンレスなどが最
適であるが、超電導材料を複合することで十分な電流容
量を確保することができる。Further, it is desirable that a superconducting material is compounded in the conductor connector and the shield connector. Copper, stainless steel, etc. are optimal for the material of the conductor connection body and the shield connection body so that they can withstand the thermal stress when the cable shrinks due to cooling, but a sufficient current capacity is secured by combining superconducting materials. be able to.
【０００９】[0009]
【発明の実施の形態】以下、３芯一括型超電導ケーブル
を例として本発明の実施の形態を説明する。図１は本発
明ジョイントの横断面図、図２は同透視斜視図である。
このジョイントは、大地に固定される断熱接続体１と、
その内部に固定される３つの遮蔽接続体２と、さらに各
遮蔽接続体２の内部に保持される導体接続体３とを具え
る。両ケーブルはこのジョイントを介して接続される。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below using a three-core collective superconducting cable as an example. FIG. 1 is a cross-sectional view of the joint of the present invention, and FIG. 2 is a perspective view of the joint.
This joint comprises an insulated connector 1 fixed to the ground,
It comprises three shield connectors 2 fixed inside thereof, and a conductor connector 3 held inside each shield connector 2. Both cables are connected via this joint.
【００１０】断熱接続体１は超電導ケーブルの断熱管が
接続される円筒部材である。超電導ケーブルの断熱管と
同様に内管４と外管５とを具え、両管４，５の間には間
隔を保持するスペーサ６が介在されて真空断熱層７が形
成されている。The heat-insulating connector 1 is a cylindrical member to which the heat-insulating pipe of the superconducting cable is connected. Like the heat insulating tube of the superconducting cable, the tube has an inner tube 4 and an outer tube 5, and a vacuum heat insulating layer 7 is formed between the two tubes 4 and 5 with a spacer 6 interposed therebetween.
【００１１】遮蔽接続体２は断熱接続体１の内周にコア
支持材８を介して遮蔽接続体２を保持する円筒部材であ
る。コア支持材８は３つの遮蔽接続体２を一体に保持す
るもので、断熱接続体１の中心に配置された軸部９と、
軸部９を断熱接続体内周の３方から支持する支持部10
と、軸部９から伸びて遮蔽接続体２につながる連結部11
を具える。そして、遮蔽接続体２の内部には、円筒状の
導体接続体３が同芯状に保持されている。本例では、遮
蔽接続体内周の３方から絶縁支持体12で導体接続体３を
保持した。絶縁支持体12は、遮蔽接続体２と導体接続体
３との絶縁を確保できるよう、繊維強化プラスチックな
どの絶縁材料で構成する。さらに、遮蔽接続体２と導体
接続体３との間に形成される空間には液体窒素などの冷
媒を充填して、両接続体間の絶縁をより確実に確保す
る。The shield connector 2 is a cylindrical member that holds the shield connector 2 on the inner periphery of the heat insulating connector 1 via a core support member 8. The core support member 8 holds the three shielded connectors 2 integrally, and includes a shaft portion 9 disposed at the center of the heat-insulated connector 1,
A support portion 10 for supporting the shaft portion 9 from three directions around the inside of the heat insulating connection body.
And a connecting portion 11 extending from the shaft portion 9 and connected to the shield connection body 2.
Equipped. A cylindrical conductor connector 3 is held concentrically inside the shield connector 2. In this example, the conductor connector 3 was held by the insulating support 12 from three sides around the inner periphery of the shield connector. The insulating support 12 is made of an insulating material such as fiber-reinforced plastic so that the insulation between the shield connector 2 and the conductor connector 3 can be ensured. Further, a space formed between the shield connection body 2 and the conductor connection body 3 is filled with a refrigerant such as liquid nitrogen to ensure the insulation between the two connection bodies more reliably.
【００１２】なお、遮蔽接続体２と導体接続体３は、冷
却に伴うケーブル収縮時の熱応力に耐えられるよう銅パ
イプやステンレスパイプで構成することが好ましい。さ
らに、電流容量を確保するために、遮蔽接続体２と導体
接続体３に超電導材料を複合しても良い。It is preferable that the shield connector 2 and the conductor connector 3 are made of a copper pipe or a stainless steel pipe so as to withstand thermal stress when the cable contracts due to cooling. Furthermore, in order to secure a current capacity, the shield connection 2 and the conductor connection 3 may be combined with a superconducting material.
【００１３】一方、このようなジョイントに接続される
超電導ケーブル（図示せず）は、一つの断熱管の内部に
３芯のコア20（図２）を収納した構造である。各コア20
は中心から順に、フォーマ，超電導導体，電気絶縁体，
遮蔽層を具え、フォーマの内部および断熱管と各コア20
との間が液体窒素などの冷媒流路となる。On the other hand, a superconducting cable (not shown) connected to such a joint has a structure in which a three-core core 20 (FIG. 2) is housed inside one heat insulating tube. Each core 20
Is the former, superconductor, electrical insulator,
With the shielding layer, the inside of the former and the heat insulation tube and each core 20
A space between the refrigerant passages is a refrigerant flow path such as liquid nitrogen.
【００１４】ケーブルを接続するには、コア20の超電導
導体を導体接続体３に、遮蔽層を遮蔽接続体２に接続す
る。この接続はスリーブ圧縮や半田付けなどにより容易
に脱落しないように行う。また、ケーブルの断熱管と断
熱接続体１とを溶接やボルト締めなどにより強固に接続
する。この接続により、断熱接続体１と遮蔽接続体２と
の間に形成される空間にも冷媒が満たされる。To connect the cable, the superconducting conductor of the core 20 is connected to the conductor connector 3 and the shielding layer is connected to the shield connector 2. This connection is performed so as not to easily fall off due to sleeve compression or soldering. Further, the heat insulating pipe of the cable and the heat insulating connector 1 are firmly connected by welding, bolting, or the like. By this connection, the space formed between the heat-insulating connector 1 and the shield connector 2 is also filled with the refrigerant.
【００１５】このようなジョイントによれば、各コア20
は導体接続体３，遮蔽接続体２，断熱接続体１を介して
大地に固定されるため、冷却に伴ってケーブルが収縮し
たときに接続箇所が移動することがない。そのため、各
コア20の接続箇所が互いに衝突して破損することもな
い。また、各コア20に張力が付与されるため、撚り合わ
されたコア全体の外径が小さくなることでケーブルの熱
収縮を吸収することができる。According to such a joint, each core 20
Is fixed to the ground via the conductor connector 3, the shield connector 2, and the heat-insulating connector 1, so that when the cable contracts due to cooling, the connection portion does not move. Therefore, the connection portions of the cores 20 do not collide with each other and are not damaged. In addition, since tension is applied to each core 20, the outer diameter of the entire twisted core is reduced, so that thermal contraction of the cable can be absorbed.
【００１６】[0016]
【発明の効果】以上説明したように、本発明ジョイント
によれば、各芯毎の接続箇所が互いに衝突して破損する
こともなく、多芯一括型超電導ケーブルの接続に最適な
ジョイントを得ることができる。また、各芯の接続箇所
を固定することで、熱収縮時にケーブルに張力を付与で
き、各芯がより合わせられた状態の外径を小さくするこ
とで熱収縮を吸収することができる。As described above, according to the joint of the present invention, it is possible to obtain a joint which is optimal for connection of a multi-core batch type superconducting cable, without the connection points of each core colliding with each other and being damaged. Can be. In addition, by fixing the connection portion of each core, tension can be applied to the cable at the time of thermal contraction, and thermal contraction can be absorbed by reducing the outer diameter of the state where each core is twisted.
【図１】本発明ジョイントの横断面図である。FIG. 1 is a cross-sectional view of the joint of the present invention.
【図２】本発明ジョイントの透視斜視図である。FIG. 2 is a perspective view of the joint of the present invention.
【図３】３芯一括型ケーブルが熱収縮を吸収する際の動
作を示す説明図である。FIG. 3 is an explanatory view showing an operation when a three-core collective cable absorbs heat shrinkage.
１ 断熱接続体 ２ 遮蔽接続体 ３ 導体接続体 ４
内管 ５ 外管 ６ スペーサ ７ 真空断熱層 ８ コア支持材 ９
軸部 10 支持部 11 連結部 12 絶縁支持体 20 コアDESCRIPTION OF SYMBOLS 1 Insulated connector 2 Shield connector 3 Conductor connector 4
Inner tube 5 Outer tube 6 Spacer 7 Vacuum insulation layer 8 Core support 9
Shaft 10 Support 11 Connection 12 Insulation support 20 Core
───────────────────────────────────────────────────── フロントページの続き (72)発明者 岩田 良浩 神奈川県横浜市鶴見区江ヶ崎町４番１号 東京電力株式会社電力技術研究所内 (72)発明者 石井 英雄 神奈川県横浜市鶴見区江ヶ崎町４番１号 東京電力株式会社電力技術研究所内 (72)発明者 本庄 昇一 神奈川県横浜市鶴見区江ヶ崎町４番１号 東京電力株式会社電力技術研究所内 Ｆターム(参考） 5G321 AA99 BA05 CA09 CA53 CB02 CB08 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshihiro Iwata 4-1 Egasaki-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Inside the Electric Power Research Laboratory, Tokyo Electric Power Company (72) Inventor Hideo Ishii E, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture No.4-1, Kasaki-cho, Tokyo Electric Power Company, Electric Power Research Institute (72) Inventor Shoichi Honjo No.4-1, Egasaki-cho, Tsurumi-ku, Yokohama-shi, Kanagawa Prefecture Tokyo Electric Power Company Electric Power Research Institute F-term (reference) 5G321 AA99 BA05 CA09 CA53 CB02 CB08
Claims (3)
において、 各芯の導体が接続される導体接続体と、 各芯の遮蔽層が接続されると共に導体接続体を内部に保
持した遮蔽接続体とを具え、 各芯に接続される遮蔽接続体がケーブルの伸縮に対して
移動しないように固定されていることを特徴とする超電
導ケーブルジョイント。1. A joint for a multi-core batch type superconducting cable, comprising: a conductor connector to which conductors of each core are connected; and a shield connector to which a shield layer of each core is connected and which holds the conductor connector inside. A superconducting cable joint, characterized in that a shielded connection body connected to each core is fixed so as not to move with respect to expansion and contraction of the cable.
縁は、導体接続体を遮蔽接続体内に保持する絶縁支持体
と、遮蔽接続体と導体接続体との間の空間に充填される
冷媒とで行われることを特徴とする請求項１記載の超電
導ケーブルジョイント。2. The electrical insulation between the conductor connector and the shield connector is filled in an insulating support for holding the conductor connector in the shield connector and a space between the shield connector and the conductor connector. The superconducting cable joint according to claim 1, wherein the joint is performed with a refrigerant.
材料が複合されていることを特徴とする請求項１記載の
超電導ケーブルジョイント。3. The superconducting cable joint according to claim 1, wherein a superconducting material is compounded in the conductor connector and the shield connector.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10257947A JP2000090998A (en) | 1998-09-11 | 1998-09-11 | Superconducting cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10257947A JP2000090998A (en) | 1998-09-11 | 1998-09-11 | Superconducting cable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2000090998A true JP2000090998A (en) | 2000-03-31 |
Family
ID=17313434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10257947A Pending JP2000090998A (en) | 1998-09-11 | 1998-09-11 | Superconducting cable joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2000090998A (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20030089579A (en) * | 2002-05-16 | 2003-11-22 | 엘지전선 주식회사 | The corona shield structure for preventing shrink back of cable |
| JP2005210834A (en) * | 2004-01-22 | 2005-08-04 | Sumitomo Electric Ind Ltd | Connection structure of polyphase superconductive cable |
| JP2009542187A (en) * | 2006-06-29 | 2009-11-26 | ネクサン | Electric bushing structure for superconducting elements |
| JP2010272529A (en) * | 1999-06-22 | 2010-12-02 | Sumitomo Electric Ind Ltd | Superconducting cable |
| CN102545134A (en) * | 2012-02-08 | 2012-07-04 | 中国科学院电工研究所 | High temperature superconducting cable multi-segment connection device |
| JP2012209134A (en) * | 2011-03-30 | 2012-10-25 | Sumitomo Electric Ind Ltd | Connection unit and connection structure |
| CN104409168A (en) * | 2014-12-12 | 2015-03-11 | 吕珩 | Triangular shielding layer of three-phase superconducting cable |
| CN104682024A (en) * | 2015-03-05 | 2015-06-03 | 清华大学 | Multi-segment connecting device for double-current-channel high temperature superconducting cable |
-
1998
- 1998-09-11 JP JP10257947A patent/JP2000090998A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010272529A (en) * | 1999-06-22 | 2010-12-02 | Sumitomo Electric Ind Ltd | Superconducting cable |
| KR20030089579A (en) * | 2002-05-16 | 2003-11-22 | 엘지전선 주식회사 | The corona shield structure for preventing shrink back of cable |
| JP2005210834A (en) * | 2004-01-22 | 2005-08-04 | Sumitomo Electric Ind Ltd | Connection structure of polyphase superconductive cable |
| JP4593933B2 (en) * | 2004-01-22 | 2010-12-08 | 住友電気工業株式会社 | Connection structure of multiphase superconducting cable |
| JP2009542187A (en) * | 2006-06-29 | 2009-11-26 | ネクサン | Electric bushing structure for superconducting elements |
| JP2012209134A (en) * | 2011-03-30 | 2012-10-25 | Sumitomo Electric Ind Ltd | Connection unit and connection structure |
| CN102545134A (en) * | 2012-02-08 | 2012-07-04 | 中国科学院电工研究所 | High temperature superconducting cable multi-segment connection device |
| CN104409168A (en) * | 2014-12-12 | 2015-03-11 | 吕珩 | Triangular shielding layer of three-phase superconducting cable |
| CN104682024A (en) * | 2015-03-05 | 2015-06-03 | 清华大学 | Multi-segment connecting device for double-current-channel high temperature superconducting cable |
| CN104682024B (en) * | 2015-03-05 | 2016-10-19 | 清华大学 | A kind of multistage attachment means of dual current path high-temperature superconductive cable |
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