JP6802084B2 - Connection structure of superconducting cable and connection member for superconducting cable - Google Patents

Connection structure of superconducting cable and connection member for superconducting cable Download PDF

Info

Publication number
JP6802084B2
JP6802084B2 JP2017029357A JP2017029357A JP6802084B2 JP 6802084 B2 JP6802084 B2 JP 6802084B2 JP 2017029357 A JP2017029357 A JP 2017029357A JP 2017029357 A JP2017029357 A JP 2017029357A JP 6802084 B2 JP6802084 B2 JP 6802084B2
Authority
JP
Japan
Prior art keywords
superconducting
cable
layer
outer conductive
insulating
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.)
Active
Application number
JP2017029357A
Other languages
Japanese (ja)
Other versions
JP2018137070A (en
Inventor
廣瀬　正幸
正幸 廣瀬
俊也 森村
俊也 森村
智男 三村
智男 三村
丸山　修
修 丸山
哲太郎 中野
哲太郎 中野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Tokyo Electric Power Co Inc
Sumitomo Electric Industries Ltd
Original Assignee
Tokyo Electric Power Co Inc
Sumitomo Electric Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Tokyo Electric Power Co Inc, Sumitomo Electric Industries Ltd filed Critical Tokyo Electric Power Co Inc
Priority to JP2017029357A priority Critical patent/JP6802084B2/en
Publication of JP2018137070A publication Critical patent/JP2018137070A/en
Application granted granted Critical
Publication of JP6802084B2 publication Critical patent/JP6802084B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

  • Containers, Films, And Cooling For Superconductive Devices (AREA)
  • Insulated Conductors (AREA)
  • Superconductors And Manufacturing Methods Therefor (AREA)
  • Gas Or Oil Filled Cable Accessories (AREA)

Description

本発明は、超電導ケーブルの接続構造、及び超電導ケーブル用接続部材に関する。 The present invention relates to a superconducting cable connection structure and a superconducting cable connection member.

代表的な超電導ケーブルとして、特許文献１に示す低温絶縁型のものがある。この超電導ケーブルは、フォーマの外周に順に超電導導体層、電気絶縁層、外側超電導層を有するケーブルコアと、このケーブルコアを収納すると共に液体窒素などの冷媒が充填される断熱管とを備える。超電導導体層や外側超電導層には、超電導線材が利用される。 As a typical superconducting cable, there is a low temperature insulation type shown in Patent Document 1. This superconducting cable includes a cable core having a superconducting conductor layer, an electrically insulating layer, and an outer superconducting layer in this order on the outer periphery of the former, and a heat insulating tube that houses the cable core and is filled with a refrigerant such as liquid nitrogen. A superconducting wire is used for the superconducting conductor layer and the outer superconducting layer.

超電導ケーブルの端部には、常電導機器や別の超電導ケーブルが接続される。
特許文献１は、低温絶縁型の超電導ケーブル同士を接続する中間接続構造として、各ケーブルコアに備えるフォーマ同士を接続する丸棒状の中心部を備える中間接続部材を備えるものを開示する。中心部には、超電導導体層同士、外側超電導層同士を接続する接続用超電導線材が挿通配置される配置孔が設けられている。この中間接続構造は、フォーマ同士を中心部で接続し、次に超電導導体層同士を接続用超電導線材で接続し、超電導導体層の接続箇所から中間接続部材の各端部に亘って、これらを覆うように補強絶縁部を形成し、次に外側超電導層同士を接続用超電導線材で接続する工程を経て構築される。 A normal conducting device or another superconducting cable is connected to the end of the superconducting cable.
Patent Document 1 discloses, as an intermediate connection structure for connecting low-temperature insulated superconducting cables to each other, an intermediate connecting member including a round bar-shaped central portion for connecting formers provided in each cable core. In the central portion, an arrangement hole is provided in which superconducting wire members for connection for connecting the superconducting conductor layers and the outer superconducting layers are inserted and arranged. In this intermediate connection structure, the formers are connected to each other at the center, then the superconducting conductor layers are connected to each other with a connecting superconducting wire, and these are connected from the connection point of the superconducting conductor layer to each end of the intermediate connecting member. It is constructed through a process of forming a reinforcing insulating portion so as to cover it, and then connecting the outer superconducting layers to each other with a connecting superconducting wire.

特許文献２は、超電導ケーブル同士の接続や、超電導ケーブルと常電導機器との接続に利用される接続ユニットを開示する。上記接続ユニットは、接続する各超電導ケーブルに備える超電導導体層が差し込まれる複数の差込口を備える導電ブロックと、導電ブロックを収納し、冷媒が充填される冷媒容器と、冷媒容器の外周を覆う断熱容器とを備える。 Patent Document 2 discloses a connection unit used for connecting superconducting cables to each other and connecting a superconducting cable to a normal conductive device. The connection unit covers a conductive block having a plurality of outlets into which superconducting conductor layers provided in each superconducting cable to be connected are inserted, a refrigerant container that houses the conductive block and is filled with refrigerant, and the outer periphery of the refrigerant container. It is equipped with a heat insulating container.

特開２０１５−１７７６０５号公報JP-A-2015-177605 特開２０１３−０２７１７８号公報Japanese Unexamined Patent Publication No. 2013-027178

超電導導体層と、外側超電導層などの外側導電層とを備える超電導ケーブル同士の接続構造や、上記超電導ケーブルと常電導機器との接続構造として、超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定できる構造が望まれる。 As a connection structure between superconducting cables having a superconducting conductor layer and an outer conductive layer such as an outer superconducting layer, or a connection structure between the superconducting cable and a normal conductive device, a connection point between the superconducting conductor layer and an outer conductive layer A structure that can fix the relative position with and is desired.

この理由の一つとして、ケーブルコアの端部において、超電導導体層の接続箇所と外側導電層の接続箇所とが相対的に固定されておらず、両者が相対的に移動可能である場合、超電導導体層と外側導電層との間に設けられる電気絶縁層や、接続箇所に設けられる補強絶縁層において電気絶縁強度が局所的に低下する可能性があることが挙げられる。 One of the reasons for this is that at the end of the cable core, when the connection point of the superconducting conductor layer and the connection point of the outer conductive layer are not relatively fixed and both are relatively movable, superconductivity It can be mentioned that the electrical insulation strength may be locally reduced in the electrically insulating layer provided between the conductor layer and the outer conductive layer and the reinforcing insulating layer provided at the connection point.

ここで、超電導ケーブルの運転に際して、液体窒素などの冷媒を超電導ケーブルの一端側から他端側に向かって一方向に導入する場合がある。この場合、一端側から徐々に冷却されるため、一端側部分は、他端側部分を引っ張るように熱収縮する。ケーブルコアの端部において超電導導体層と外側導電層との相対位置が固定されていなければ、上述の熱収縮時に熱収縮量の差や、ケーブルコアの移動に伴う断熱管との間に生じる摩擦力などに起因して、超電導導体層の端部に設けられる接続箇所と外側導電層の端部に設けられる接続箇所とが相対的に動くことができる。電気絶縁層や補強絶縁層は、通常、絶縁紙を巻回して形成される。このような電気絶縁層では、その内外の導体に対する密着力が、ＣＶケーブルに備える樹脂成形体の絶縁層に比較して弱く、ケーブル長さ方向の強度や剛性を十分に期待できない。そのため、上述の両接続箇所が相対的に動くと、電気絶縁層における端末処理がなされた箇所であって、異なる部材が組み合わされる箇所に、隙間や絶縁紙の重なりなどが生じ、この部分が電気絶縁強度の低下部分となる可能性がある。 Here, when operating the superconducting cable, a refrigerant such as liquid nitrogen may be introduced in one direction from one end side to the other end side of the superconducting cable. In this case, since the cooling is gradually performed from one end side, the one end side portion is heat-shrinked so as to pull the other end side portion. If the relative positions of the superconducting conductor layer and the outer conductive layer are not fixed at the end of the cable core, the difference in the amount of heat shrinkage during the above-mentioned heat shrinkage and the friction generated between the cable core and the heat insulating tube due to the movement of the cable core. Due to a force or the like, the connection portion provided at the end of the superconducting conductor layer and the connection portion provided at the end of the outer conductive layer can move relatively. The electrical insulating layer and the reinforcing insulating layer are usually formed by winding insulating paper. In such an electrically insulating layer, the adhesion to the inner and outer conductors is weaker than that of the insulating layer of the resin molded body provided in the CV cable, and the strength and rigidity in the cable length direction cannot be sufficiently expected. Therefore, when both of the above-mentioned connection points move relatively, a gap or an overlap of insulating paper occurs in a place where the terminal treatment is performed in the electrically insulating layer and different members are combined, and this part becomes electric. It may be a part where the insulation strength is reduced.

別の理由の一つとして、交換や改修などでの解体及び再構築する場合において、再構築後に応力を管理し難くなることが挙げられる。 One of the other reasons is that it becomes difficult to manage stress after reconstruction when dismantling and reconstructing for replacement or repair.

超電導ケーブルを一旦、冷却すると、昇温した際に、ケーブルコアの各部位には応力が残留する。上述の超電導導体層の接続箇所と外側導電層の接続箇所とが相対移動可能な場合に、上記の残留応力がある状態で解体すると、ケーブルコアの部位間に相対的な変位が生じる可能性がある。この相対的な変位が生じたまま再接続し、再冷却すると、ケーブルコアの各部位における応力分布が解体前と変わる可能性があり、応力を管理し難くなる。 Once the superconducting cable is cooled, stress remains in each part of the cable core when the temperature rises. When the connection point of the superconducting conductor layer and the connection point of the outer conductive layer are relatively movable, disassembling with the above-mentioned residual stress may cause a relative displacement between the parts of the cable core. is there. If reconnecting and recooling with this relative displacement occurring, the stress distribution at each part of the cable core may change from that before dismantling, making stress management difficult.

上述の中間接続部材を備える接続構造では、中間接続部材を中間接続箱（断熱容器）に対して固定するものの、超電導導体層の接続箇所と外側導電層の接続箇所とは中間接続部材に直接固定されておらず、相対的に移動可能といえる。上述の接続ユニットを備える接続構造では、外側超電導層が編組材を介して接続ユニットに接続されており、超電導導体層と外側超電導層とが相対的に移動可能といえる。 In the connection structure including the above-mentioned intermediate connecting member, the intermediate connecting member is fixed to the intermediate connecting box (insulation container), but the connecting portion of the superconducting conductor layer and the connecting portion of the outer conductive layer are directly fixed to the intermediate connecting member. It can be said that it is relatively movable. In the connection structure including the above-mentioned connection unit, the outer superconducting layer is connected to the connecting unit via a braided material, and it can be said that the superconducting conductor layer and the outer superconducting layer are relatively movable.

そこで、超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定できる超電導ケーブルの接続構造を提供することを目的の一つとする。また、超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定できる超電導ケーブル用接続部材を提供することを別の目的の一つとする。 Therefore, one of the purposes of the present invention is to provide a connection structure of a superconducting cable capable of fixing the relative position between the connection portion of the superconducting conductor layer and the connection portion of the outer conductive layer. Another object of the present invention is to provide a connecting member for a superconducting cable capable of fixing the relative position between the connecting portion of the superconducting conductor layer and the connecting portion of the outer conductive layer.

本開示に係る超電導ケーブルの接続構造は、
超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルの端部に設けられる超電導ケーブルの接続構造であって、
段剥ぎされた前記ケーブルコアの端部に取り付けられる雄型部材と、
前記雄型部材が挿入されるケーブル側凹部と、前記超電導ケーブルの接続対象が挿入される相手側凹部とを備える雌型部材と、
前記超電導導体層の端部の外周に設けられる断熱部とを備え、
前記雄型部材は、
前記超電導導体層の端部が挿入される導体挿入部を備え、前記超電導導体層に電気的に接続される内側導電キャップ部と、
前記外側導電層の端部に電気的に接続される外側導電部と、
前記内側導電キャップ部と前記外側導電部とを電気的に絶縁した状態で接続し、前記電気絶縁層の外周に配置される端末側絶縁部とを備え、
前記雌型部材は、
前記ケーブル側凹部の一部が設けられ、前記内側導電キャップ部と電気的に接続される内側導体部と、
前記内側導体部に同軸に設けられ、前記外側導電部に電気的に接続される外側接続端部を備える外側導電接続筒部と、
前記内側導体部と前記外側導電接続筒部との間に介在されて両者を電気的に絶縁し、前記端末側絶縁部の外周に配置される外側絶縁端部を備える外側絶縁筒部とを備える。 The connection structure of the superconducting cable according to the present disclosure is
It is a connection structure of a superconducting cable provided at the end of a superconducting cable including a cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a heat insulating tube containing the cable core and filled with a refrigerant. hand,
A male member attached to the end of the cable core that has been stripped off,
A female member having a cable-side recess into which the male member is inserted and a mating recess into which the connection target of the superconducting cable is inserted.
It is provided with a heat insulating portion provided on the outer periphery of the end portion of the superconducting conductor layer.
The male member is
An inner conductive cap portion that includes a conductor insertion portion into which an end portion of the superconducting conductor layer is inserted and is electrically connected to the superconducting conductor layer,
An outer conductive portion that is electrically connected to the end of the outer conductive layer,
The inner conductive cap portion and the outer conductive portion are connected in an electrically insulated state, and a terminal-side insulating portion arranged on the outer periphery of the electrically insulating layer is provided.
The female member is
An inner conductor portion provided with a part of the cable-side recess and electrically connected to the inner conductive cap portion,
An outer conductive connecting cylinder portion coaxially provided on the inner conductor portion and having an outer connecting end portion electrically connected to the outer conductive portion.
It is provided with an outer insulating cylinder portion that is interposed between the inner conductor portion and the outer conductive connecting cylinder portion to electrically insulate them, and has an outer insulating end portion arranged on the outer periphery of the terminal side insulating portion. ..

本開示に係る超電導ケーブル用接続部材は、
超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルの端部に取り付けられて、前記超電導ケーブルの接続対象との接続に用いられる超電導ケーブル用接続部材であって、
段剥ぎされた前記ケーブルコアの端部において、前記超電導導体層の端部が挿入される導体挿入部を備え、前記超電導導体層に電気的に接続される内側導電キャップ部と、
前記外側導電層の端部に電気的に接続される外側導電部と、
前記内側導電キャップ部と前記外側導電部とを電気的に絶縁した状態で接続し、前記電気絶縁層の外周に配置される端末側絶縁部とを備える。 The connecting member for a superconducting cable according to the present disclosure is
A cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a heat insulating tube containing the cable core and being filled with a refrigerant are attached to the end of the superconducting cable to connect the superconducting cable. A connecting member for superconducting cables used to connect to a target.
An inner conductive cap portion that includes a conductor insertion portion into which the end portion of the superconducting conductor layer is inserted at the end portion of the cable core that has been stripped off and is electrically connected to the superconducting conductor layer.
An outer conductive portion that is electrically connected to the end of the outer conductive layer,
The inner conductive cap portion and the outer conductive portion are connected in an electrically insulated state, and a terminal-side insulating portion arranged on the outer periphery of the electrically insulating layer is provided.

別の本開示に係る超電導ケーブル用接続部材は、
超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルと接続対象との間に介在されて、両者の接続に用いられる超電導ケーブル用接続部材であって、
段剥ぎされた前記ケーブルコアの端部が挿入されるケーブル側凹部と、前記超電導ケーブルの接続対象が挿入される相手側凹部とを備え、更に、
前記ケーブル側凹部の一部を構成し、前記超電導導体層の端部が挿入される導体凹部を備え、前記超電導導体層と電気的に接続される内側導体部と、
前記内側導体部に同軸に設けられ、前記外側導電層に電気的に接続される外側接続端部を備える外側導電接続筒部と、
前記内側導体部と前記外側導電接続筒部との間に介在されて両者を電気的に絶縁し、前記電気絶縁層の外周に配置される外側絶縁端部を備える外側絶縁筒部とを備える。 Another connection member for superconducting cables according to the present disclosure is
A cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a superconducting cable including a heat insulating tube containing the cable core and filled with a refrigerant are interposed between the connection target and both. A connecting member for superconducting cables used for connection.
It is provided with a cable-side recess into which the end of the cable core that has been stripped off is inserted, and a mating recess into which the connection target of the superconducting cable is inserted.
An inner conductor portion that forms a part of the cable-side recess, includes a conductor recess into which the end portion of the superconducting conductor layer is inserted, and is electrically connected to the superconducting conductor layer.
An outer conductive connecting cylinder portion coaxially provided on the inner conductor portion and having an outer connecting end portion electrically connected to the outer conductive layer.
It is provided with an outer insulating cylinder portion that is interposed between the inner conductor portion and the outer conductive connecting cylinder portion to electrically insulate them, and has an outer insulating end portion arranged on the outer periphery of the electrically insulating layer.

上記の超電導ケーブルの接続構造は、超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定できる。 In the above-mentioned connection structure of the superconducting cable, the relative position between the connection portion of the superconducting conductor layer and the connection portion of the outer conductive layer can be fixed.

上記の超電導ケーブル用接続部材は、超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定できる。 The above-mentioned connecting member for a superconducting cable can fix the relative position between the connecting portion of the superconducting conductor layer and the connecting portion of the outer conductive layer.

実施形態１の超電導ケーブルの接続構造の縦断面を示す概略構成図である。It is a schematic block diagram which shows the vertical cross section of the connection structure of the superconducting cable of Embodiment 1. 実施形態１の超電導ケーブルの接続構造において、ケーブルコアの端部と雄型部材との取付け状態を説明する説明図である。It is explanatory drawing explaining the attachment state of the end portion of the cable core, and the male member in the connection structure of the superconducting cable of Embodiment 1. FIG. 実施形態１の超電導ケーブルの接続構造において、雄型部材と雌型部材との接続状態を説明する説明図である。It is explanatory drawing explaining the connection state of a male member and a female member in the connection structure of the superconducting cable of Embodiment 1. FIG. 実施形態１の超電導ケーブルの端末構造に備える低温絶縁型の超電導ケーブルの一例を示す横断面である。It is a cross section which shows an example of the low temperature insulation type superconducting cable provided in the terminal structure of the superconducting cable of Embodiment 1.

［本発明の実施形態の説明］
最初に本発明の実施態様を列記して説明する。
（１）本発明の一態様に係る超電導ケーブルの接続構造は、
超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルの端部に設けられる超電導ケーブルの接続構造であって、
段剥ぎされた前記ケーブルコアの端部に取り付けられる雄型部材と、
前記雄型部材が挿入されるケーブル側凹部と、前記超電導ケーブルの接続対象が挿入される相手側凹部とを備える雌型部材と、
前記超電導導体層の端部の外周に設けられる断熱部とを備え、
前記雄型部材は、
前記超電導導体層の端部が挿入される導体挿入部を備え、前記超電導導体層に電気的に接続される内側導電キャップ部と、
前記外側導電層の端部に電気的に接続される外側導電部と、
前記内側導電キャップ部と前記外側導電部とを電気的に絶縁した状態で接続し、前記電気絶縁層の外周に配置される端末側絶縁部とを備え、
前記雌型部材は、
前記ケーブル側凹部の一部が設けられ、前記内側導電キャップ部と電気的に接続される内側導体部と、
前記内側導体部に同軸に設けられ、前記外側導電部に電気的に接続される外側接続端部を備える外側導電接続筒部と、
前記内側導体部と前記外側導電接続筒部との間に介在されて両者を電気的に絶縁し、前記端末側絶縁部の外周に配置される外側絶縁端部を備える外側絶縁筒部とを備える。 [Explanation of Embodiments of the Present Invention]
First, embodiments of the present invention will be listed and described.
(1) The connection structure of the superconducting cable according to one aspect of the present invention is
It is a connection structure of a superconducting cable provided at the end of a superconducting cable including a cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a heat insulating tube containing the cable core and filled with a refrigerant. hand,
A male member attached to the end of the cable core that has been stripped off,
A female member having a cable-side recess into which the male member is inserted and a mating recess into which the connection target of the superconducting cable is inserted.
It is provided with a heat insulating portion provided on the outer periphery of the end portion of the superconducting conductor layer.
The male member is
An inner conductive cap portion that includes a conductor insertion portion into which an end portion of the superconducting conductor layer is inserted and is electrically connected to the superconducting conductor layer,
An outer conductive portion that is electrically connected to the end of the outer conductive layer,
The inner conductive cap portion and the outer conductive portion are connected in an electrically insulated state, and a terminal-side insulating portion arranged on the outer periphery of the electrically insulating layer is provided.
The female member is
An inner conductor portion provided with a part of the cable-side recess and electrically connected to the inner conductive cap portion,
An outer conductive connecting cylinder portion coaxially provided on the inner conductor portion and having an outer connecting end portion electrically connected to the outer conductive portion.
It is provided with an outer insulating cylinder portion that is interposed between the inner conductor portion and the outer conductive connecting cylinder portion to electrically insulate them, and has an outer insulating end portion arranged on the outer periphery of the terminal side insulating portion. ..

上記雌型部材は、少なくとも一組のケーブル側凹部及び相手方凹部を備える。一組以上備えていれば、ケーブル側凹部の個数と相手方凹部の個数とが異なる場合、等しい場合のいずれでもよい。例えば、上記雌型部材が複数組のケーブル側凹部及び相手方凹部を備える場合、上記の超電導ケーブルの接続構造は、この組数に対応した雄型部材を備えることができる。
上記断熱部は、代表的には、外側絶縁筒部の外周に設けられる。また、上記断熱部は、雌型部材に一体に備える場合、雌型部材とは独立して備える場合のいずれでもよい。 The female member includes at least one set of cable-side recesses and mating recesses. As long as one or more sets are provided, the number of cable-side recesses and the number of mating recesses may be different or equal. For example, when the female member includes a plurality of sets of cable-side recesses and mating recesses, the connection structure of the superconducting cable may include male members corresponding to the number of sets.
The heat insulating portion is typically provided on the outer periphery of the outer insulating cylinder portion. Further, the heat insulating portion may be provided integrally with the female member or may be provided independently of the female member.

上記の超電導ケーブルの接続構造は、ケーブルコアに直接取り付けられる雄型部材と、この雄型部材とは独立した部材であり、雄型部材を電気的及び機械的に接続可能な雌型部材とを備える。
雄型部材は、内側導電キャップ部と端末側絶縁部と外側導電部とが同軸状に配置された部材であり、内側導電キャップ部の位置と外側導電部の位置とは端末側絶縁部によって規定されて実質的に変位しない。
雌型部材は、内側導体部と、外側絶縁筒部と、外側導電接続筒部とが同軸状に配置された部材であり、内側導体部の位置と外側導電接続筒部の位置とは、外側絶縁筒部によって規定されて実質的に変位しない。
雌型部材に雄型部材が差し込まれて、雄型部材と雌型部材との両部材が接続された状態では、両部材の相対位置が実質的に変動しない。
従って、雄型部材と雌型部材とが接続された状態では、ケーブルコアの端部に設けられる超電導導体層の接続箇所（直接には内側導電キャップ部との接続箇所）と外側導電層の接続箇所（直接には外側導電部との接続箇所）とは、端末側絶縁部によって相対位置が固定され、雌型部材がこの相対位置を実質的に変化させない。 The connection structure of the superconducting cable described above includes a male member directly attached to the cable core and a female member that is independent of the male member and can electrically and mechanically connect the male member. Be prepared.
The male member is a member in which the inner conductive cap portion, the terminal side insulating portion, and the outer conductive portion are arranged coaxially, and the position of the inner conductive cap portion and the position of the outer conductive portion are defined by the terminal side insulating portion. It is substantially not displaced.
The female member is a member in which the inner conductor portion, the outer insulating cylinder portion, and the outer conductive connection cylinder portion are arranged coaxially, and the position of the inner conductor portion and the position of the outer conductive connection cylinder portion are outside. It is defined by the insulation tube and does not substantially displace.
When the male member is inserted into the female member and both the male member and the female member are connected to each other, the relative positions of the two members do not substantially change.
Therefore, in the state where the male member and the female member are connected, the connection point of the superconducting conductor layer provided at the end of the cable core (directly the connection point with the inner conductive cap portion) and the connection of the outer conductive layer. The relative position of the portion (directly connected to the outer conductive portion) is fixed by the terminal-side insulating portion, and the female member does not substantially change this relative position.

上記の超電導ケーブルの接続構造は、特定の雄型部材によって、上述のようにケーブルコアの端部に設けられる超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定でき、特定の雌型部材によって、雄型部材による相対位置の固定状態を維持して機械的接続、電気的接続を行える。そのため、上記の超電導ケーブルの接続構造は、以下のように超電導導体層と外側導電層とに相対的な移動を生じ得るような応力が作用した場合でも、両者の相対的な移動を抑制できる。従って、上記の超電導ケーブルの接続構造は、上述のケーブルコアの電気絶縁強度の低下部分が局所的に生じることを効果的に防止でき、電気絶縁特性に対する信頼性を高められる。このような上記の超電導ケーブルの接続構造は、低電圧・大電流用途は勿論、高電圧用途にも利用できる。上記の相対的な移動は、ケーブルコア長、布設ルートの高低差や曲がり部の有無、その位置関係などが影響すると共に、超電導ケーブルの冷却過程（通常、一方の側から冷媒が導入される）や昇温時の温度変化などによって生じる。上記の超電導ケーブルの接続構造は、ケーブルコア同士の接続にあたり、上記相対的な移動が問題になる場合に好適に利用できる。 The connection structure of the superconducting cable described above can be specified by using a specific male member to fix the relative position between the connection point of the superconducting conductor layer provided at the end of the cable core and the connection point of the outer conductive layer as described above. With the female member of the above, mechanical connection and electrical connection can be performed while maintaining the fixed state of the relative position by the male member. Therefore, the above-mentioned connection structure of the superconducting cable can suppress the relative movement of the superconducting conductor layer and the outer conductive layer even when a stress that may cause a relative movement is applied as described below. Therefore, the above-mentioned connection structure of the superconducting cable can effectively prevent the above-mentioned portion of the cable core having a reduced electrical insulation strength from being locally generated, and can enhance the reliability of the electrical insulation characteristics. Such a connection structure of the superconducting cable can be used not only for low voltage and large current applications but also for high voltage applications. The above relative movement is affected by the cable core length, the height difference of the laying route, the presence or absence of bends, the positional relationship, etc., and the cooling process of the superconducting cable (usually, the refrigerant is introduced from one side). It is caused by temperature changes at the time of temperature rise. The above-mentioned connection structure of the superconducting cable can be suitably used when the above-mentioned relative movement becomes a problem in connecting the cable cores to each other.

また、上記の超電導ケーブルの接続構造は、雄型部材を取り付けた超電導ケーブルと雌型部材との接続と、接続対象と雌型部材との接続とを独立して取り扱える。ここで、上述の中間接続部材を備える接続構造、及び上述の接続ユニットを備える接続構造では、交換や改修などで解体する場合、超電導導体層の接続箇所の応力及び外側導電層の接続箇所の応力がそれぞれ開放される。また、上述の中間接続部材を用いた従来の中間接続構造について、交換や改修などで解体する場合、接続していた両超電導ケーブルが開放される。この開放によって、上述のようにケーブルコアの各部位間に相対的な変位が生じ、この相対的な変位に起因してケーブルコアの各部位の応力分布が変化するなどして、再冷却後、応力の管理が行い難くなる恐れがある。これに対して、上記の超電導ケーブルの接続構造では、上記解体の際に雌型部材から雄型部材を取り外しても、超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定したままとできる。上記の超電導ケーブルの接続構造を中間接続構造とし、一方の超電導ケーブルのケーブルコアを交換などする場合には、他方の超電導ケーブルのケーブルコアについては雄型部材を介して雌型部材に接続させたままとすることができる。そのため、再冷却後、上記他方の超電導ケーブルのケーブルコアにおける各部位の応力の管理を容易に行える。 Further, in the above-mentioned superconducting cable connection structure, the connection between the superconducting cable to which the male member is attached and the female member and the connection between the connection target and the female member can be handled independently. Here, in the connection structure including the above-mentioned intermediate connecting member and the above-mentioned connection structure including the connection unit, when disassembling by replacement or repair, the stress at the connection point of the superconducting conductor layer and the stress at the connection point of the outer conductive layer Are released respectively. Further, when the conventional intermediate connection structure using the above-mentioned intermediate connection member is disassembled by replacement or repair, both superconducting cables connected to each other are released. Due to this opening, relative displacement occurs between each part of the cable core as described above, and the stress distribution of each part of the cable core changes due to this relative displacement, and after recooling, It may be difficult to manage the stress. On the other hand, in the connection structure of the superconducting cable, even if the male member is removed from the female member at the time of disassembly, the relative position between the connection portion of the superconducting conductor layer and the connection portion of the outer conductive layer is fixed. You can leave it as it is. When the connection structure of the above superconducting cable is an intermediate connection structure and the cable core of one superconducting cable is replaced, the cable core of the other superconducting cable is connected to the female member via the male member. Can be left alone. Therefore, after recooling, the stress of each part in the cable core of the other superconducting cable can be easily managed.

更に、上述の中間接続部材を用いた従来の中間接続構造では、一方の超電導ケーブルのみを交換する場合であっても他方の超電導ケーブルの接続処理を再度行う必要がある。上述の接続ユニットを備える中間接続構造では、例えば一方の超電導ケーブルのみを交換する場合に他方の超電導ケーブルを接続ユニットに接続したままとすることができるものの、上述のように超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定する構造ではない。これに対して、上記の超電導ケーブルの接続構造は、上述のように超電導導体層の接続箇所と外側導電層の接続箇所との相対位置を固定できる上に、例えば中間接続構造とする場合に、一方の超電導ケーブルのみを交換や改修などする際に他方の超電導ケーブルを雌型部材に接続したままとしたり、雌型部材を交換する場合に各超電導ケーブルのケーブルコアに取り付けられた雄型部材を接続したままとしたりすることができる。上記の超電導ケーブルの接続構造は、雌型部材に雄型部材を差し込むことで、両部材を接続できるという簡単な構成であって施工性に優れ、新規構築も、上述のような再構築も容易により短時間で行える。 Further, in the conventional intermediate connection structure using the above-mentioned intermediate connection member, it is necessary to reconnect the other superconducting cable even when only one superconducting cable is replaced. In the intermediate connection structure including the above-mentioned connection unit, for example, when only one superconducting cable is replaced, the other superconducting cable can be left connected to the connection unit, but the connection point of the superconducting conductor layer as described above. It is not a structure that fixes the relative position between the outer conductive layer and the connection point. On the other hand, the connection structure of the superconducting cable described above can fix the relative position between the connection portion of the superconducting conductor layer and the connection portion of the outer conductive layer as described above, and when the connection structure is, for example, an intermediate connection structure. When replacing or repairing only one superconducting cable, the other superconducting cable remains connected to the female member, or when replacing the female member, the male member attached to the cable core of each superconducting cable is used. You can leave it connected. The connection structure of the superconducting cable described above has a simple structure in which both members can be connected by inserting the male member into the female member, and has excellent workability. It is easy to newly construct or reconstruct as described above. Can be done in a shorter time.

加えて、上記の超電導ケーブルの接続構造は、雌型部材に雄型部材を差し込む構成であるため、上述の中間接続部材の各端部に補強絶縁部を形成する場合に比較して、例えば電気絶縁部分におけるケーブル長手方向の長さを短くでき、この点で小型化にも寄与する。 In addition, since the connection structure of the superconducting cable described above has a structure in which a male member is inserted into a female member, for example, electricity is compared with the case where a reinforcing insulating portion is formed at each end of the intermediate connecting member described above. The length of the insulated portion in the longitudinal direction of the cable can be shortened, which also contributes to miniaturization.

（２）上記の超電導ケーブルの接続構造の一例として、前記雄型部材の内側導電キャップ部と、前記雌型部材の内側導体部及び前記外側導電接続筒部とは、前記冷媒が流入される冷媒孔を備え、
前記外側導電接続筒部の冷媒孔から、前記雄型部材の端末側絶縁部と前記雌型部材の外側絶縁筒部との間の空間及び前記内側導電キャップ部と前記内側導体部のケーブル側凹部を形成する内壁との間の空間を経て、前記内側導電キャップ部の冷媒孔及び前記内側導体部の冷媒孔に連続する冷媒流路を備える形態が挙げられる。 (2) As an example of the connection structure of the superconducting cable, the inner conductive cap portion of the male member, the inner conductor portion of the female member, and the outer conductive connection cylinder portion are the refrigerant into which the refrigerant flows. With holes
From the refrigerant hole of the outer conductive connection cylinder portion, the space between the terminal side insulating portion of the male member and the outer insulating cylinder portion of the female member, and the cable side recess of the inner conductive cap portion and the inner conductor portion. There is a form in which a refrigerant flow path continuous with the refrigerant hole of the inner conductive cap portion and the refrigerant hole of the inner conductor portion is provided through the space between the inner wall and the inner wall.

上記形態は、冷媒が雄型部材及び雌型部材の内部を流通できる。そのため、雄型部材や雌型部材の構成材料の少なくとも一部に常電導材料を含む場合に、この常電導部分を流通する冷媒によって冷却できる。常電導部分は、特に交流通電時、とりわけ大電流の通電時に温度上昇し得るものの、冷媒によって直接冷却されるため、常電導部分及び隣接する超電導導体層の温度上昇を抑制できる。従って、上記形態は、超電導状態を安定して維持できる。また、上記形態は、雄型部材や雌型部材の構成材料に、加工性や成形性などに優れるものが多い常電導材料を含むことができる。従って、上記形態は、雄型部材とケーブルコアとを接続し易い上に、雄型部材や雌型部材の製造性にも優れる。 In the above embodiment, the refrigerant can flow inside the male member and the female member. Therefore, when the normal conductive material is contained in at least a part of the constituent materials of the male member and the female member, it can be cooled by the refrigerant flowing through the normal conductive portion. Although the temperature of the normal conducting portion can rise especially when an alternating current is applied, especially when a large current is applied, the temperature of the normal conducting portion and the adjacent superconducting conductor layer can be suppressed because it is directly cooled by the refrigerant. Therefore, the above-mentioned form can stably maintain the superconducting state. Further, the above-mentioned form can include a normal conductive material in which many of the constituent materials of the male mold member and the female mold member are excellent in processability and moldability. Therefore, in the above form, the male member and the cable core can be easily connected, and the male member and the female member are also excellent in manufacturability.

（３）上記の超電導ケーブルの接続構造の一例として、前記雄型部材の内側導電キャップ部と前記雌型部材の内側導体部との組、及び前記雄型部材の外側導電部と前記雌型部材の外側導電接続筒部との組の少なくとも一方の組に、前記雌型部材に対して前記雄型部材を着脱自在とする機械的接続部を備える形態が挙げられる。 (3) As an example of the connection structure of the superconducting cable, the pair of the inner conductive cap portion of the male member and the inner conductor portion of the female member, and the outer conductive portion of the male member and the female member. At least one set of the pair with the outer conductive connecting tube portion of the above includes a form in which the male member is detachably attached to the female member.

上記形態は、半田接続のように機械的接続と電気的接続とが一体になった着脱不可能な場合とは異なり、着脱自在な構成であるため、新規構築や再構築を容易に行える。 Unlike the case where the mechanical connection and the electrical connection are integrated and cannot be attached and detached as in the case of the solder connection, the above form has a detachable configuration, so that new construction and reconstruction can be easily performed.

（４）上記の機械的接続部を備える（３）の超電導ケーブルの接続構造の一例として、前記機械的接続部とは独立した電気的接続部を備える形態が挙げられる。 (4) As an example of the connection structure of the superconducting cable having the above-mentioned mechanical connection portion (3), there is a form in which an electrical connection portion independent of the mechanical connection portion is provided.

上記形態は、機械的接続と電気的接続とを分離して行える上に、各部に適した構造を種々採用でき、利用し易い。 In the above form, the mechanical connection and the electrical connection can be separated, and various structures suitable for each part can be adopted, which is easy to use.

（５）本発明の一態様に係る超電導ケーブル用接続部材は、
超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルの端部に取り付けられて、前記超電導ケーブルの接続対象との接続に用いられる超電導ケーブル用接続部材であって、
段剥ぎされた前記ケーブルコアの端部において、前記超電導導体層の端部が挿入される導体挿入部を備え、前記超電導導体層に電気的に接続される内側導電キャップ部と、
前記外側導電層の端部に電気的に接続される外側導電部と、
前記内側導電キャップ部と前記外側導電部とを電気的に絶縁した状態で接続し、前記電気絶縁層の外周に配置される端末側絶縁部とを備える。 (5) The connecting member for a superconducting cable according to one aspect of the present invention is
A cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a heat insulating tube containing the cable core and being filled with a refrigerant are attached to the end of the superconducting cable to connect the superconducting cable. A connecting member for superconducting cables used to connect to a target.
An inner conductive cap portion that includes a conductor insertion portion into which the end portion of the superconducting conductor layer is inserted at the end portion of the cable core that has been stripped off and is electrically connected to the superconducting conductor layer.
An outer conductive portion that is electrically connected to the end of the outer conductive layer,
The inner conductive cap portion and the outer conductive portion are connected in an electrically insulated state, and a terminal-side insulating portion arranged on the outer periphery of the electrically insulating layer is provided.

上記の超電導ケーブル用接続部材は、代表的には、上記の本発明の一態様に係る超電導ケーブルの接続構造に備える雄型部材に相当し、雄型部材と同様な作用効果を奏する。特に、上記の超電導ケーブル用接続部材は、内側導電キャップ部に接続される超電導導体層の端部と外側導電層に接続される外側導電部の端部との相対位置を固定できる。 The above-mentioned connecting member for a superconducting cable typically corresponds to a male-shaped member provided in the connecting structure of the superconducting cable according to one aspect of the present invention, and has the same function and effect as the male-shaped member. In particular, the above-mentioned superconducting cable connecting member can fix the relative position between the end of the superconducting conductor layer connected to the inner conductive cap portion and the end of the outer conductive portion connected to the outer conductive layer.

（６）本発明の一態様に係る超電導ケーブル用接続部材は、
超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルと接続対象との間に介在されて、両者の接続に用いられる超電導ケーブル用接続部材であって、
段剥ぎされた前記ケーブルコアの端部が挿入されるケーブル側凹部と、前記超電導ケーブルの接続対象が挿入される相手側凹部とを備え、更に、
前記ケーブル側凹部の一部を構成し、前記超電導導体層の端部が挿入される導体凹部を備え、前記超電導導体層と電気的に接続される内側導体部と、
前記内側導体部に同軸に設けられ、前記外側導電層に電気的に接続される外側接続端部を備える外側導電接続筒部と、
前記内側導体部と前記外側導電接続筒部との間に介在されて両者を電気的に絶縁し、前記電気絶縁層の外周に配置される外側絶縁端部を備える外側絶縁筒部とを備える。
この超電導ケーブル用接続部材は、少なくとも一組のケーブル側凹部及び相手方凹部を備える。一組以上備えていれば、ケーブル側凹部の個数と相手方凹部の個数が異なる場合、等しい場合のいずれでもよい。例えば、この超電導ケーブル用接続部材が複数組のケーブル側凹部及び相手方凹部を備える場合、この組数に対応した超電導ケーブルのケーブルコアを接続可能である。 (6) The connecting member for a superconducting cable according to one aspect of the present invention is
A cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a superconducting cable including a heat insulating tube containing the cable core and filled with a refrigerant are interposed between the connection target and both. A connecting member for superconducting cables used for connection.
It is provided with a cable-side recess into which the end of the cable core that has been stripped off is inserted, and a mating recess into which the connection target of the superconducting cable is inserted.
An inner conductor portion that forms a part of the cable-side recess, includes a conductor recess into which the end portion of the superconducting conductor layer is inserted, and is electrically connected to the superconducting conductor layer.
An outer conductive connecting cylinder portion coaxially provided on the inner conductor portion and having an outer connecting end portion electrically connected to the outer conductive layer.
It is provided with an outer insulating cylinder portion that is interposed between the inner conductor portion and the outer conductive connecting cylinder portion to electrically insulate them, and has an outer insulating end portion arranged on the outer periphery of the electrically insulating layer.
This superconducting cable connecting member includes at least one set of cable-side recesses and mating recesses. As long as one or more sets are provided, the number of cable-side recesses and the number of mating recesses may be different or equal. For example, when the connecting member for a superconducting cable includes a plurality of sets of cable-side recesses and mating recesses, the cable cores of the superconducting cables corresponding to the number of sets can be connected.

上記の超電導ケーブル用接続部材は、上述の雄型部材に相当する（５）の超電導ケーブル用接続部材と組み合わせて利用することが好ましい。この場合、（６）の超電導ケーブル用接続部材は、上記の本発明の一態様に係る超電導ケーブルの接続構造に備える雌型部材に相当し、雌型部材と同様な作用効果を奏する。代表的には、上記の超電導ケーブル用接続部材は、上述の（５）の超電導ケーブル用接続部材による超電導導体層の接続箇所と外側導電層の接続箇所との相対位置の固定状態を維持して、機械的接続、電気的接続を行える。 The superconducting cable connecting member is preferably used in combination with the superconducting cable connecting member of (5) corresponding to the male member described above. In this case, the connection member for the superconducting cable (6) corresponds to the female member provided in the connection structure of the superconducting cable according to the above aspect of the present invention, and has the same effect as the female member. Typically, the above-mentioned superconducting cable connecting member maintains a fixed state of a relative position between the connecting portion of the superconducting conductor layer and the connecting portion of the outer conductive layer by the above-mentioned (5) superconducting cable connecting member. , Mechanical connection, electrical connection.

（７）上記（６）の超電導ケーブル用接続部材の一例として、前記外側導電接続筒部の外周に設けられる断熱部を備える形態が挙げられる。 (7) As an example of the connection member for a superconducting cable according to (6) above, there is a form in which a heat insulating portion provided on the outer periphery of the outer conductive connection cylinder portion is provided.

上記形態は、断熱部を一体に備えるため、この超電導ケーブル用接続部材の外周に別途断熱部材を構築することなく、この超電導ケーブル用接続部材の内側に配置される超電導導体層などを冷却する冷媒を所定の温度に維持できる。また、上記形態の超電導ケーブル用接続部材を用いて超電導ケーブルの接続構造を再構築する際に、断熱部を実質的に再構築する必要が無い、又は軽い真空引きなどの簡単な操作程度とすることができて施工性に優れる。 In the above embodiment, since the heat insulating portion is integrally provided, the refrigerant that cools the superconducting conductor layer and the like arranged inside the superconducting cable connecting member without separately constructing a heat insulating member on the outer periphery of the superconducting cable connecting member. Can be maintained at a predetermined temperature. Further, when reconstructing the connection structure of the superconducting cable using the superconducting cable connecting member of the above-described form, it is not necessary to substantially reconstruct the heat insulating portion, or a simple operation such as light evacuation is performed. It can be done and has excellent workability.

［本発明の実施形態の詳細］
以下に図面を参照して、本発明の実施形態の具体例を説明する。図において同一符号は同一名称物を意味する。 [Details of Embodiments of the present invention]
Specific examples of embodiments of the present invention will be described below with reference to the drawings. In the figure, the same reference numerals mean the same names.

［実施形態１］
（全体構成）
図１〜図３を参照して、実施形態１の超電導ケーブルの接続構造１を説明する。
実施形態１の超電導ケーブルの接続構造１は、超電導ケーブルと接続対象とを接続する際に超電導ケーブルの端部に設けられる。この例の超電導ケーブルの接続構造１は、図４に示す低温絶縁型の超電導ケーブル１００，１００同士を接続する中間接続構造である。実施形態１の超電導ケーブルの接続構造１は、接続される二つの超電導ケーブル１００，１００とは独立した、以下の二種の超電導ケーブル用接続部材を備えることを特徴の一つとする。一方の超電導ケーブル用接続部材は、接続される超電導ケーブル１００，１００にそれぞれ備えるケーブルコア１１０Ａ，１１０Ｂの端部に取り付けられる雄型部材２Ａ，２Ｂである。他方の超電導ケーブル用接続部材は、一方のケーブルコア１１０Ａの雄型部材２Ａが挿入されるケーブル側凹部３１と、接続対象である他方のケーブルコア１１０Ｂの雄型部材２Ｂが挿入される相手側凹部３０とを備える雌型部材３である。この例の雌型部材３は、ケーブル側凹部３１及び相手側凹部３０の組を一組備える。雄型部材２Ａ，２Ｂと雌型部材３との接続によって、ケーブルコア１１０Ａ，１１０Ｂと雌型部材３との間を電気的及び機械的に接続することができる。 [Embodiment 1]
(overall structure)
The connection structure 1 of the superconducting cable of the first embodiment will be described with reference to FIGS. 1 to 3.
The connection structure 1 of the superconducting cable of the first embodiment is provided at the end of the superconducting cable when connecting the superconducting cable and the connection target. The connection structure 1 of the superconducting cable of this example is an intermediate connection structure for connecting the low-temperature insulation type superconducting cables 100, 100 shown in FIG. One of the features of the superconducting cable connection structure 1 of the first embodiment is that the superconducting cable connection structure 1 includes the following two types of superconducting cable connecting members independent of the two superconducting cables 100 and 100 to be connected. One of the connecting members for superconducting cables is male members 2A and 2B attached to the ends of the cable cores 110A and 110B provided in the connected superconducting cables 100 and 100, respectively. The other connecting member for the superconducting cable has a cable-side recess 31 into which the male member 2A of one cable core 110A is inserted and a recess on the other side into which the male member 2B of the other cable core 110B to be connected is inserted. It is a female member 3 including 30. The female member 3 of this example includes a set of a cable-side recess 31 and a mating recess 30. By connecting the male members 2A and 2B and the female member 3, the cable cores 110A and 110B and the female member 3 can be electrically and mechanically connected.

以下、図４を参照して、まず超電導ケーブル１００を説明し、次に雄型部材２，雌型部材３の詳細な構成、接続状態などを順に説明する。 Hereinafter, with reference to FIG. 4, the superconducting cable 100 will be described first, and then the detailed configuration, connection state, and the like of the male member 2 and the female member 3 will be described in order.

（超電導ケーブル）
超電導ケーブル１００は、超電導導体層１１２と電気絶縁層１１３と外側導電層１１４とを備えるケーブルコア１１０と、ケーブルコア１１０を収納し、冷媒１３０が充填される断熱管１２０とを備える。超電導ケーブル１００は、超電導導体層１１２及び電気絶縁層１１３の双方が冷媒１３０に冷却される低温絶縁型ケーブルである。冷媒１３０は、液体窒素などの液体冷媒が代表的である。 (Superconducting cable)
The superconducting cable 100 includes a cable core 110 including a superconducting conductor layer 112, an electrically insulating layer 113, and an outer conductive layer 114, and a heat insulating tube 120 that houses the cable core 110 and is filled with a refrigerant 130. The superconducting cable 100 is a low-temperature insulating cable in which both the superconducting conductor layer 112 and the electrically insulating layer 113 are cooled by the refrigerant 130. The refrigerant 130 is typically a liquid refrigerant such as liquid nitrogen.

この例のケーブルコア１１０は、中心から順にフォーマ１１１、超電導導体層１１２、電気絶縁層１１３、外側導電層１１４、保護層１１５を同軸状に備える。また、この例の超電導ケーブル１００は、１本のケーブルコア１１０が一つの断熱管１２０に収納された単心ケーブルである。例えば、このような単心ケーブルを３本布設して、各単心ケーブルを各相の送電に利用する三相交流送電路、例えば低圧送電路などを構築することができる。超電導ケーブル１００は公知の構成を利用できる。
以下に、ケーブルコア１１０の一例を説明する。 The cable core 110 of this example includes a former 111, a superconducting conductor layer 112, an electrically insulating layer 113, an outer conductive layer 114, and a protective layer 115 coaxially from the center. Further, the superconducting cable 100 of this example is a single-core cable in which one cable core 110 is housed in one heat insulating tube 120. For example, three such single-core cables can be laid to construct a three-phase AC transmission line, for example, a low-voltage transmission line, in which each single-core cable is used for transmission of each phase. A known configuration can be used for the superconducting cable 100.
An example of the cable core 110 will be described below.

・ケーブルコア
・・フォーマ
フォーマ１１１は、超電導導体層１１２を支持する機能を有する。この例のフォーマ１１１は中実体である。中実体は、絶縁被覆を備える被覆金属線を撚り合わせた撚線などが挙げられる。その他のフォーマ１１１として、金属パイプなどの中空体であり、その内部空間を冷媒１３０の流路に利用するものが挙げられる。 The cable core former former 111 has a function of supporting the superconducting conductor layer 112. The former 111 in this example is a medium entity. Examples of the medium substance include a stranded wire obtained by twisting a coated metal wire having an insulating coating. Other former formers 111 include hollow bodies such as metal pipes, which utilize the internal space thereof for the flow path of the refrigerant 130.

・・超電導導体層
超電導導体層１１２は、フォーマ１１１の外周に超電導線材をヘリカル巻きして形成された少なくとも１層の線材層を備える。超電導線材は、例えば酸化物超電導体を備えるテープ状線材が挙げられる。具体的には、Ｂｉ２２２３などのビスマス酸化物系銀シース線材やＲＥ１２３などの希土類酸化物系薄膜線材などが挙げられる。線材層の積層数は適宜選択できる。フォーマ１１１と超電導導体層１１２との間にクッション層（図示せず）などを設けることができる。 -. Superconducting conductor layer The superconducting conductor layer 112 includes at least one wire rod layer formed by helically winding a superconducting wire rod around the outer periphery of the former 111. Examples of the superconducting wire include a tape-shaped wire having an oxide superconductor. Specific examples thereof include a bismuth oxide-based silver sheath wire rod such as Bi2223 and a rare earth oxide-based thin film wire rod such as RE123. The number of laminated wire layers can be appropriately selected. A cushion layer (not shown) or the like can be provided between the former 111 and the superconducting conductor layer 112.

・・電気絶縁層
電気絶縁層１１３は、超電導導体層１１２とその外部との電気的絶縁を確保する。電気絶縁層１１３は、代表的には、絶縁材からなるテープを超電導導体層１１２の外周に巻回して積層することで形成される。絶縁材は、例えば、クラフト紙やＰＰＬＰ（登録商標；Ｐｏｌｙｐｒｏｐｙｌｅｎｅ Ｌａｍｉｎａｔｅｄ Ｐａｐｅｒ）といった半合成紙などの絶縁紙が挙げられる。 -Electrical insulation layer The electrical insulation layer 113 secures electrical insulation between the superconducting conductor layer 112 and its outside. The electrically insulating layer 113 is typically formed by winding a tape made of an insulating material around the outer periphery of the superconducting conductor layer 112 and laminating it. Examples of the insulating material include insulating paper such as kraft paper and semi-synthetic paper such as PPLP (registered trademark; Polypropylene Laminated Paper).

・・外側導電層
外側導電層１１４は、電気絶縁層１１３の外周に設けられ、導電材料から構成される層であり、電界遮蔽や接地に利用され、構成材料によっては電磁遮蔽機能なども有する。例えば、外側導電層１１４を超電導線材から構成される外側超電導層とする場合、電界遮蔽や接地の機能に加えて、超電導ケーブル１００を交流送電路に利用する場合には、外側導電層１１４を電磁遮蔽層に利用でき、直流送電路に利用する場合には、超電導導体層１１２を往路導体、外側導電層１１４を帰路導体などにも利用できる。外側導電層１１４は、常電導材料からなる層と、超電導材料からなる層との双方を備えることもできる。特に、外側導電層１１４を、超電導線材や常電導材料からなる線材を配した電流路とする場合、上記線材の巻付ピッチは、巻付径に対して長くすることが一般的である。巻付けピッチを長くすることは、外側導電層１１４に生じる冷却時応力に基づく相対的な挙動の一因となる。この相対的な挙動を抑制するためには、超電導導体層１１２の端部と外側導電層１１４の端部とを、絶縁材を介して固定する必要がある。実施形態１の超電導ケーブルの接続構造１では、雄型部材２Ａ，２Ｂ及び雌型部材３を備えることで、上記相対的な挙動を抑制する。 -Outer conductive layer The outer conductive layer 114 is a layer provided on the outer periphery of the electrically insulating layer 113 and made of a conductive material, is used for electric field shielding and grounding, and also has an electromagnetic shielding function depending on the constituent material. For example, when the outer conductive layer 114 is an outer superconducting layer composed of a superconducting wire, in addition to the functions of electric field shielding and grounding, when the superconducting cable 100 is used for an AC transmission line, the outer conductive layer 114 is electromagnetic. It can be used as a shielding layer, and when it is used for a DC transmission line, the superconducting conductor layer 112 can be used as an outward conductor, and the outer conductive layer 114 can also be used as a return conductor. The outer conductive layer 114 may also include both a layer made of a normal conductive material and a layer made of a superconducting material. In particular, when the outer conductive layer 114 is a current path in which a wire rod made of a superconducting wire or a normal conductive material is arranged, the winding pitch of the wire is generally longer than the winding diameter. Increasing the winding pitch contributes to the relative behavior based on the cooling stress generated in the outer conductive layer 114. In order to suppress this relative behavior, it is necessary to fix the end portion of the superconducting conductor layer 112 and the end portion of the outer conductive layer 114 with an insulating material. In the connection structure 1 of the superconducting cable of the first embodiment, the relative behavior is suppressed by providing the male members 2A and 2B and the female members 3.

・・保護層
保護層１１５は、ケーブルコア１１０の最外周に配置され、その内側に配置された部材（特に超電導導体層１１２）の機械的保護、外側導電層１１４と断熱管１２０との間の電気的絶縁の確保などを目的として設けられる。保護層１１５は、代表的には、上述の絶縁紙を外側導電層１１４の外周に巻回して積層することで形成される。 Protective layer The protective layer 115 is arranged on the outermost circumference of the cable core 110, and mechanically protects the members (particularly the superconducting conductor layer 112) arranged inside the protective layer 110, between the outer conductive layer 114 and the heat insulating tube 120. It is provided for the purpose of ensuring electrical insulation. The protective layer 115 is typically formed by winding the above-mentioned insulating paper around the outer periphery of the outer conductive layer 114 and laminating it.

・断熱管
断熱管１２０は、内管１２１と外管１２２とを有する真空断熱管である。内管１２１の内部空間は、ケーブルコア１１０の収納空間であると共に、超電導導体層１１２や、外側超電導層を備える場合には、所定の電流条件において外側超電導層も超電導状態を維持するための冷媒１３０が過冷却状態で流通される流路に利用される。内管１２１及び外管１２２は、ステンレス鋼などの金属製のコルゲート管などが挙げられる。この例に示す断熱管１２０は、内管１２１と外管１２２との間にスーパーインシュレーション（商品名）などの断熱材（図示せず）を備えており、より高い断熱性を有する。断熱管１２０の外管１２２の外側には、ビニルやポリエチレンなどの防食材から構成される防食層１２４を備える。 Insulation pipe The insulation pipe 120 is a vacuum insulation pipe having an inner pipe 121 and an outer pipe 122. The internal space of the inner tube 121 is a storage space for the cable core 110, and when the superconducting conductor layer 112 and the outer superconducting layer are provided, the outer superconducting layer is also a refrigerant for maintaining the superconducting state under predetermined current conditions. 130 is used for a flow path that is circulated in a supercooled state. Examples of the inner pipe 121 and the outer pipe 122 include a corrugated pipe made of metal such as stainless steel. The heat insulating pipe 120 shown in this example is provided with a heat insulating material (not shown) such as super insulation (trade name) between the inner pipe 121 and the outer pipe 122, and has higher heat insulating properties. An anticorrosion layer 124 made of a food-proof material such as vinyl or polyethylene is provided on the outside of the outer pipe 122 of the heat-insulating pipe 120.

（超電導ケーブルの接続構造）
・雄型部材
雄型部材２は、超電導ケーブル１００の端部に取り付けられて、超電導ケーブル１００の接続対象（この例では別の超電導ケーブル１００）との接続に用いられる。雄型部材２は、図２に示すように有底筒状の部材であって、一端側（図２では左側）に向かって段差が高くなる段差形状である。詳しくは、雄型部材２は、超電導導体層１１２に電気的に接続される内側導電キャップ部２２と、外側導電層１１４の端部に電気的に接続される外側導電部２４と、内側導電キャップ部２２と外側導電部２４とを電気的に絶縁した状態で接続する端末側絶縁部２３とを備える。内側導電キャップ部２２は、段剥ぎされたケーブルコア１１０の端部において、超電導導体層１１２が挿入される導体挿入部２２２を備える。この例の内側導電キャップ部２２は、接続対象との間に介在される接続部材の凹部（ここでは雌型部材３のケーブル側凹部３１の一部である導体凹部３２２）に挿入する突端部２２０を備える。この例の内側導電キャップ部２２と外側導電部２４とは、端末側絶縁部２３によって同軸状に一体に保持されて、これら三つの部材を一体物として取り扱える。従って、雄型部材２は、段剥ぎされたケーブルコア１１０の端部に被せることで、容易に配置できる。 (Connecting structure of superconducting cable)
-Male member The male member 2 is attached to the end of the superconducting cable 100 and is used for connecting the superconducting cable 100 to a connection target (another superconducting cable 100 in this example). As shown in FIG. 2, the male member 2 is a bottomed tubular member, and has a stepped shape in which a step increases toward one end side (left side in FIG. 2). Specifically, the male member 2 includes an inner conductive cap portion 22 electrically connected to the superconducting conductor layer 112, an outer conductive portion 24 electrically connected to the end portion of the outer conductive layer 114, and an inner conductive cap. A terminal-side insulating portion 23 that connects the portion 22 and the outer conductive portion 24 in an electrically insulated state is provided. The inner conductive cap portion 22 includes a conductor insertion portion 222 into which the superconducting conductor layer 112 is inserted at the end portion of the cable core 110 that has been stripped off. The inner conductive cap portion 22 of this example is a protruding end portion 220 inserted into a recess of a connecting member (here, a conductor recess 322 which is a part of a cable-side recess 31 of the female member 3) interposed between the connection target. To be equipped. The inner conductive cap portion 22 and the outer conductive portion 24 of this example are integrally held coaxially by the terminal-side insulating portion 23, and these three members can be handled as an integral body. Therefore, the male member 2 can be easily arranged by covering the end portion of the cable core 110 that has been stripped off.

・・内側導電キャップ部
内側導電キャップ部２２は、図２に示すように、有底筒状（代表的には有底円筒状）であり、一端側（図２では左側）に開口部を有する止まり穴が設けられている。この止まり穴を超電導導体層１１２の端部が挿入される導体挿入部２２２とする。導体挿入部２２２の内周形状、大きさは、超電導導体層１１２の端部に対応した形状、大きさであって、超電導導体層１１２の端部が挿入可能な大きさとする。 .. Inner conductive cap portion As shown in FIG. 2, the inner conductive cap portion 22 has a bottomed cylindrical shape (typically a bottomed cylindrical shape) and has an opening on one end side (left side in FIG. 2). A blind hole is provided. This blind hole is referred to as a conductor insertion portion 222 into which the end portion of the superconducting conductor layer 112 is inserted. The inner peripheral shape and size of the conductor insertion portion 222 are shapes and sizes corresponding to the end portion of the superconducting conductor layer 112, and the end portion of the superconducting conductor layer 112 can be inserted.

内側導電キャップ部２２の他端側には、雌型部材３に設けられたケーブル側凹部３１の一部を構成する導体凹部３２２に挿入される突端部２２０を備える。この例の突端部２２０は、一端側に導体挿入部２２２の一部、他端側（図２では右側、先端側）に超電導導体層１１２の端部から露出されるフォーマ１１１の端部を固定するフォーマ固定部を一体に備える。 On the other end side of the inner conductive cap portion 22, a protruding end portion 220 inserted into the conductor recess 322 forming a part of the cable side recess 31 provided in the female member 3 is provided. The protruding end 220 of this example fixes a part of the conductor insertion portion 222 on one end side and the end portion of the former 111 exposed from the end portion of the superconducting conductor layer 112 on the other end side (right side, tip side in FIG. 2). The former fixing part is integrally provided.

その他、この例の内側導電キャップ部２２は、冷媒１３０が流入される冷媒孔２２３を備える。冷媒孔２２３の詳細は、後述の冷媒流路の項で説明する。 In addition, the inner conductive cap portion 22 of this example includes a refrigerant hole 223 into which the refrigerant 130 flows. Details of the refrigerant hole 223 will be described later in the section of the refrigerant flow path.

〔接続状態〕
内側導電キャップ部２２と超電導導体層１１２とは、例えば半田などの接合材を利用することで接続できる。この場合、内側導電キャップ部２２の外周から導体挿入部２２２を形成する内壁面に至る接合材の導入孔（図示せず）を設けると、上記内壁面と超電導導体層１１２の端部との間に接合材を均一的にかつ容易に配置できる。内側導電キャップ部２２とフォーマ１１１とは、例えばフォーマ１１１の端部を挿入する挿入孔を導体挿入部２２２に連続して備えておき、フォーマ１１１の端部をこの挿入孔に挿入した状態で圧縮することで接続できる（図２の実線は圧縮後の状態、二点鎖線は圧縮前の状態を例示する）。内側導電キャップ部２２にフォーマ１１１が圧縮接続され、超電導導体層１１２が上記接合材によって接合されることで、所定の接続強度が得られる。 〔Connection Status〕
The inner conductive cap portion 22 and the superconducting conductor layer 112 can be connected by using a bonding material such as solder. In this case, if an introduction hole (not shown) for the joining material from the outer periphery of the inner conductive cap portion 22 to the inner wall surface forming the conductor insertion portion 222 is provided, the space between the inner wall surface and the end portion of the superconducting conductor layer 112 is provided. The bonding material can be arranged uniformly and easily. The inner conductive cap portion 22 and the former 111 are, for example, provided with an insertion hole for inserting the end portion of the former 111 in the conductor insertion portion 222 continuously, and are compressed with the end portion of the former 111 inserted into the insertion hole. (The solid line in FIG. 2 exemplifies the state after compression, and the two-point chain line exemplifies the state before compression). A predetermined connection strength can be obtained by compressing and connecting the former 111 to the inner conductive cap portion 22 and joining the superconducting conductor layer 112 with the joining material.

内側導電キャップ部２２の導体挿入部２２２を形成する内壁面と超電導導体層１１２とが上述の接合材などを介して接合されることで、内側導電キャップ部２２と超電導導体層１１２とが電気的に接続される。内側導電キャップ部２２の一部（ここでは突端部２２０）が雌型部材３の導体凹部３２２に挿入され、導体凹部３２２を形成する内壁面に設けられた電気的接続部３２０（後述）に接触することで、内側導電キャップ部２２と雌型部材３の内側導体部３２とが電気的に接続される。このようにケーブルコア１１０Ａの端部に接続された雄型部材２Ａを介して、ケーブルコア１１０Ａの超電導導体層１１２と雌型部材３の内側導体部３２との間が電気的に接続される。 The inner wall surface forming the conductor insertion portion 222 of the inner conductive cap portion 22 and the superconducting conductor layer 112 are joined via the above-mentioned bonding material or the like, so that the inner conductive cap portion 22 and the superconducting conductor layer 112 are electrically connected. Connected to. A part of the inner conductive cap portion 22 (here, the tip portion 220) is inserted into the conductor recess 322 of the female member 3 and comes into contact with the electrical connection portion 320 (described later) provided on the inner wall surface forming the conductor recess 322. By doing so, the inner conductive cap portion 22 and the inner conductor portion 32 of the female member 3 are electrically connected. The superconducting conductor layer 112 of the cable core 110A and the inner conductor portion 32 of the female member 3 are electrically connected via the male member 2A connected to the end of the cable core 110A in this way.

〔構成材料〕
内側導電キャップ部２２の構成材料は、例えば、銅や銅合金、アルミニウムやアルミニウム合金といった常電導材料が挙げられる。これらの金属は、導電性に優れる上に、加工性や成形性にも優れて、上述の圧縮なども可能であり、利用し易い。上記構成材料の一部に超電導材料を含むことができる。 [Constituent material]
Examples of the constituent material of the inner conductive cap portion 22 include ordinary conductive materials such as copper and copper alloys and aluminum and aluminum alloys. These metals are excellent in conductivity, workability and moldability, and can be compressed as described above, and are easy to use. A superconducting material can be included as a part of the above-mentioned constituent materials.

・・外側導電部
外側導電部２４は、筒状（代表的には円筒状）であり、外側導電層１１４が挿入される。外側導電部２４の内周形状、大きさは、外側導電層１１４の端部に対応した形状、大きさであって、外側導電層１１４の端部が挿入可能な大きさとする。 -Outer conductive portion The outer conductive portion 24 has a tubular shape (typically a cylindrical shape), and the outer conductive layer 114 is inserted into the outer conductive portion 24. The inner peripheral shape and size of the outer conductive portion 24 are the shape and size corresponding to the end portion of the outer conductive layer 114, and the end portion of the outer conductive layer 114 can be inserted.

外側導電部２４と外側導電層１１４との接続には、上述の内側導電キャップ部２２と超電導導体層１１２との接合と同様に、半田などの接合材を利用することができる。外側導電部２４の内外に貫通する導入孔を設け、この導入孔から外側導電部２４内に接合材を供給することもできる。 For the connection between the outer conductive portion 24 and the outer conductive layer 114, a bonding material such as solder can be used in the same manner as the bonding between the inner conductive cap portion 22 and the superconducting conductor layer 112 described above. It is also possible to provide an introduction hole penetrating inside and outside of the outer conductive portion 24, and supply the bonding material into the outer conductive portion 24 from this introduction hole.

〔接続状態〕
外側導電部２４の内周面と外側導電層１１４とが上述の接合材などを介して接合されることで、外側導電部２４と外側導電層１１４とが電気的に接続される。外側導電部２４が雌型部材３のケーブル側凹部３１に挿入され、外側導電接続筒部３４における外側接続端部３４４の内周面に設けられた電気的接続部３４０（後述）に接触することで、外側導電部２４と外側導電接続筒部３４とが電気的に接続される。このようにケーブルコア１１０Ａの端部に接続された雄型部材２Ａを介して、ケーブルコア１１０Ａの外側導電層１１４と雌型部材３の外側導電接続筒部３４との間が電気的に接続される。 〔Connection Status〕
The inner peripheral surface of the outer conductive portion 24 and the outer conductive layer 114 are joined via the above-mentioned bonding material or the like, so that the outer conductive portion 24 and the outer conductive layer 114 are electrically connected. The outer conductive portion 24 is inserted into the cable-side recess 31 of the female member 3 and comes into contact with the electrical connection portion 340 (described later) provided on the inner peripheral surface of the outer connection end portion 344 of the outer conductive connection cylinder portion 34. Then, the outer conductive portion 24 and the outer conductive connection cylinder portion 34 are electrically connected. The outer conductive layer 114 of the cable core 110A and the outer conductive connecting cylinder portion 34 of the female member 3 are electrically connected via the male member 2A connected to the end of the cable core 110A in this way. To.

〔構成材料〕
外側導電部２４の構成材料は、例えば、内側導電キャップ部２２の構成材料の項で説明した常電導材料が挙げられる。外側導電層１１４が超電導材料を含む場合、外側導電部２４の構成材料の一部に超電導材料を含むことができる。 [Constituent material]
Examples of the constituent material of the outer conductive portion 24 include the normal conductive material described in the section of the constituent material of the inner conductive cap portion 22. When the outer conductive layer 114 contains a superconducting material, the superconducting material can be included as a part of the constituent materials of the outer conductive portion 24.

・・端末側絶縁部
端末側絶縁部２３は、有底筒状（代表的には円筒状）であり、その底部の中央に内側導電キャップ部２２が接続され、開口側に外側導電部２４が接続される。そして、端末側絶縁部２３は、ケーブルコア１１０の長手方向に、端末側絶縁部２３、内側導電キャップ部２２と外側導電部２４とを電気的に絶縁した状態で一体に保持する。この端末側絶縁部２３は、内側導電キャップ部２２と外側導電部２４とが端末側絶縁部２３の軸方向に所定の絶縁距離となるように配置された状態を維持して、両者の位置決め部材としても機能する。また、端末側絶縁部２３は、段剥ぎされたケーブルコア１１０の端部に雄型部材２を取り付けた際、露出される電気絶縁層１１３の外周を囲むように配置される（図３の左図）。 ・ ・ Terminal-side insulating portion The terminal-side insulating portion 23 has a bottomed tubular shape (typically a cylindrical shape), the inner conductive cap portion 22 is connected to the center of the bottom portion, and the outer conductive portion 24 is connected to the opening side. Be connected. Then, the terminal-side insulating portion 23 integrally holds the terminal-side insulating portion 23, the inner conductive cap portion 22 and the outer conductive portion 24 in the longitudinal direction of the cable core 110 in a state of being electrically insulated. The terminal-side insulating portion 23 maintains a state in which the inner conductive cap portion 22 and the outer conductive portion 24 are arranged so as to have a predetermined insulating distance in the axial direction of the terminal-side insulating portion 23, and is a positioning member for both. Also works as. Further, the terminal-side insulating portion 23 is arranged so as to surround the outer periphery of the electrically insulating layer 113 that is exposed when the male member 2 is attached to the end of the cable core 110 that has been stripped off (left in FIG. 3). Figure).

このような端末側絶縁部２３は、内側導電キャップ部２２に接続される超電導導体層１１２の露出箇所と、外側導電部２４に接続される外側導電層１１４の露出箇所との間の電気絶縁距離を、ケーブルコア１１０の長手方向に沿って確保する部材として機能する。所定の電気絶縁距離となるように、端末側絶縁部２３の大きさ（長さ、直径など）を調整する。端末側絶縁部２３の厚さは、所定の絶縁特性を満たし、ケーブル側凹部３１に挿入可能な範囲かつ必要とされる機械的強度を満たす範囲で適宜選択できる。 In such a terminal-side insulating portion 23, the electrical insulation distance between the exposed portion of the superconducting conductor layer 112 connected to the inner conductive cap portion 22 and the exposed portion of the outer conductive layer 114 connected to the outer conductive portion 24. Functions as a member for securing the cable core 110 along the longitudinal direction. The size (length, diameter, etc.) of the terminal-side insulating portion 23 is adjusted so that the electrical insulation distance becomes a predetermined value. The thickness of the terminal-side insulating portion 23 can be appropriately selected within a range that satisfies a predetermined insulating characteristic, is insertable into the cable-side recess 31, and satisfies the required mechanical strength.

この例の端末側絶縁部２３は、ケーブルコア１１０の端部に雄型部材２を取り付けた際、図３の左図に示すように端末側絶縁部２３と電気絶縁層１１３との間に所定の隙間が設けられる形状、大きさを有する。この隙間には、電気絶縁層１１３に含浸された冷媒１３０が電気絶縁層１１３を介して充填される（図１）。端末側絶縁部２３の内外に貫通する貫通孔（図示せず）を設けて、この貫通孔から上記隙間に冷媒１３０が導入される構成とすることができる。複数の貫通孔を設けると、端末側絶縁部２３の内外に冷媒１３０を流通でき、後述するように中間接続構造の内部に冷媒１３０を流通させる場合でも、局所的な流通圧力差が生じ難く、良好に流通できる。冷媒１３０の流通には、循環供給システム（図示せず）を併設しておき、所定の温度に冷却された冷媒１３０が超電導ケーブル１００や接続構造１に導入されるように構成するとよい。その他、上記隙間が設けられる構成では、端末側絶縁部２３にケーブルコア１１０を容易に挿入でき、作業性にも優れる。端末側絶縁部２３と電気絶縁層１１３との間にスペーサ（図示せず）を設けると、上記隙間をより確実に維持できる。上記スペーサを両者の位置決めに利用できる場合がある。 When the male member 2 is attached to the end of the cable core 110, the terminal-side insulating portion 23 of this example is defined between the terminal-side insulating portion 23 and the electrical insulating layer 113 as shown in the left figure of FIG. It has a shape and size in which a gap is provided. The gap is filled with the refrigerant 130 impregnated in the electrical insulating layer 113 via the electrical insulating layer 113 (FIG. 1). A through hole (not shown) penetrating inside and outside the terminal-side insulating portion 23 may be provided, and the refrigerant 130 may be introduced into the gap through the through hole. When a plurality of through holes are provided, the refrigerant 130 can be circulated inside and outside the terminal-side insulating portion 23, and even when the refrigerant 130 is circulated inside the intermediate connection structure as described later, a local flow pressure difference is unlikely to occur. Can be distributed well. A circulation supply system (not shown) may be provided in the flow of the refrigerant 130 so that the refrigerant 130 cooled to a predetermined temperature is introduced into the superconducting cable 100 or the connection structure 1. In addition, in the configuration in which the gap is provided, the cable core 110 can be easily inserted into the terminal-side insulating portion 23, and the workability is also excellent. If a spacer (not shown) is provided between the terminal-side insulating portion 23 and the electrical insulating layer 113, the gap can be maintained more reliably. The spacer may be used for positioning both.

又は、ケーブルコア１１０の端部に雄型部材２を取り付けた際、端末側絶縁部２３の内周面の少なくとも一部と電気絶縁層１１３とが接触する形状や大きさである端末側絶縁部２３とすることもできる。 Alternatively, when the male member 2 is attached to the end of the cable core 110, the terminal-side insulating portion has a shape and size in which at least a part of the inner peripheral surface of the terminal-side insulating portion 23 and the electrical insulating layer 113 come into contact with each other. It can also be 23.

〔構成材料〕
端末側絶縁部２３は、上述のように冷媒１３０に接触するため、その構成材料は、冷媒温度でも使用可能な電気絶縁材料が挙げられる。例えば、エポキシ樹脂やシリコーン樹脂などの各種の樹脂が挙げられる。上記構成材料をエポキシ樹脂などの樹脂成分とガラス繊維などの強化成分とを含む繊維強化プラスチック（ＦＲＰ）などとすると強度にも優れる。上述の樹脂を含む場合、端末側絶縁部２３の成形時に内側導電キャップ部２２と外側導電部２４との少なくとも一方を一体成型することができる。その他、接着剤を用いたり、機械的に係合可能な構成としたりするなどによって、内側導電キャップ部２２及び外側導電部２４と端末側絶縁部２３とを備える雄型部材２を容易に製造できる。 [Constituent material]
Since the terminal-side insulating portion 23 comes into contact with the refrigerant 130 as described above, examples of the constituent material thereof include an electrically insulating material that can be used even at the refrigerant temperature. For example, various resins such as epoxy resin and silicone resin can be mentioned. When the constituent material is a fiber reinforced plastic (FRP) containing a resin component such as an epoxy resin and a reinforcing component such as glass fiber, the strength is also excellent. When the above-mentioned resin is contained, at least one of the inner conductive cap portion 22 and the outer conductive portion 24 can be integrally molded when the terminal-side insulating portion 23 is molded. In addition, a male member 2 having an inner conductive cap portion 22, an outer conductive portion 24, and a terminal-side insulating portion 23 can be easily manufactured by using an adhesive or making the structure mechanically engageable. ..

・雌型部材
雌型部材３は、超電導ケーブル１００と接続対象（ここでは別の超電導ケーブル１００）との間に介在されて、両者の接続に用いられるものであり、段剥ぎされたケーブルコア１１０Ａの端部が挿入されるケーブル側凹部３１と、上記接続対象が挿入される相手側凹部３０（図１）とを備える。この例の雌型部材３は、ケーブルコア１１０Ａの端部が直接挿入されるのではなく、この端部に取り付けられた雄型部材２Ａがケーブル側凹部３１に挿入される。相手側凹部３０も同様であり、別の超電導ケーブル１００に備えるケーブルコア１１０Ｂの端部に取り付けられた雄型部材２Ｂが挿入される。 -Female member The female member 3 is interposed between the superconducting cable 100 and the connection target (here, another superconducting cable 100) and is used for connecting the two, and the step-peeled cable core 110A. A cable-side recess 31 into which the end of the cable is inserted and a mating recess 30 (FIG. 1) into which the connection target is inserted are provided. In the female member 3 of this example, the end of the cable core 110A is not directly inserted, but the male member 2A attached to this end is inserted into the cable-side recess 31. The same applies to the mating side recess 30, and the male member 2B attached to the end of the cable core 110B provided in another superconducting cable 100 is inserted.

この例の雌型部材３は、図１に示すように筒状部材（代表的には円筒状）であり、その軸を対称軸として、線対称な形状である。また、この例の雌型部材３に設けられる貫通孔はその全長に亘って一様な大きさ（直径）ではなく、その軸方向の中心部分が最も小さく（小径であり）、開口部側に向かうにつれて段階的に大きい（大径である）という階段状の孔である（図３の右図も参照）。これらの孔を形成する内面にはそれぞれ、ケーブルコア１１０を構成する異なる部材が接続される。 As shown in FIG. 1, the female member 3 of this example is a tubular member (typically cylindrical), and has a line-symmetrical shape with its axis as the axis of symmetry. Further, the through hole provided in the female member 3 of this example does not have a uniform size (diameter) over the entire length, but the central portion in the axial direction is the smallest (small diameter), and the through hole is on the opening side. It is a stepped hole that gradually increases (larger diameter) as it goes toward it (see also the right figure in FIG. 3). Different members constituting the cable core 110 are connected to the inner surfaces forming these holes.

詳しくは、雌型部材３は、ケーブル側凹部３１の一部を構成し、超電導導体層１１２の端部（この例では直接的には雄型部材２Ａの内側導電キャップ部２２）が挿入される導体凹部３２２を備え、超電導導体層１１２（同）と電気的に接続される内側導体部３２と、外側導電層１１４（この例では直接的には雄型部材２Ａの外側導電部２４）に電気的に接続される外側導電接続筒部３４と、内側導体部３２と外側導電接続筒部３４との間に介在されて両者を電気的に絶縁する外側絶縁筒部３３とを備える。この例の雌型部材３は、更に外側導電接続筒部３４の外周に設けられる断熱部３６を一体に備える。この例の雌型部材３は、内周側から順に、内側導体部３２、外側絶縁筒部３３、外側導電接続筒部３４、断熱部３６が同軸に設けられた一体物であり、取り扱い易い。雌型部材３のケーブル側凹部３１、相手側凹部３０にはそれぞれ、ケーブルコア１１０Ａの端部に取り付けられた雄型部材２Ａ，ケーブルコア１１０Ｂの端部に取り付けられた雄型部材２Ｂを容易に差し込める。一方を差し込んだ状態で、他方の着脱を行うこともできる。 Specifically, the female member 3 constitutes a part of the cable-side recess 31, and the end portion of the superconductor layer 112 (in this example, the inner conductive cap portion 22 of the male member 2A is directly inserted) is inserted. The inner conductor portion 32, which is provided with the conductor recess 322 and is electrically connected to the superconducting conductor layer 112 (same as above), and the outer conductive layer 114 (directly, the outer conductive portion 24 of the male member 2A in this example) are electrically connected. The outer conductive connecting cylinder portion 34 is provided, and the outer insulating cylinder portion 33 is interposed between the inner conductor portion 32 and the outer conductive connecting cylinder portion 34 and electrically insulates the two. The female member 3 of this example is further integrally provided with a heat insulating portion 36 provided on the outer periphery of the outer conductive connecting cylinder portion 34. The female member 3 of this example is an integral body in which the inner conductor portion 32, the outer insulating cylinder portion 33, the outer conductive connecting cylinder portion 34, and the heat insulating portion 36 are coaxially provided in order from the inner peripheral side, and is easy to handle. The male member 2A attached to the end of the cable core 110A and the male member 2B attached to the end of the cable core 110B can be easily attached to the cable-side recess 31 and the mating recess 30 of the female member 3, respectively. You can plug it in. It is also possible to attach / detach the other while one is inserted.

・・内側導体部
内側導体部３２は、棒状体の各端面に開口部を有する導体凹部３２２，３２２がそれぞれ設けられている。各導体凹部３２２，３２２には、雄型部材２の内側導電キャップ部２２（特に突端部２２０）が挿入されるため、各導体凹部３２２，３２２の内周形状、大きさは、突端部２２０に対応した形状、大きさで、突端部２２０が挿入可能な大きさとする。この例では各導体凹部３２２，３２２を形成する内壁面に電気的接続部３２０が設けられた状態で、突端部２２０における端末側絶縁部２３に近い側の領域の一部が挿入可能なように導体凹部３２２の形状、大きさを調整している。導体凹部３２２に内側導電キャップ部２２が挿入されると、上述のように、電気的接続部３２０を介して、内側導体部３２と内側導電キャップ部２２とが電気的に接続される。 .. Inner conductor portion The inner conductor portion 32 is provided with conductor recesses 322 and 322 having openings at each end surface of the rod-shaped body. Since the inner conductive cap portion 22 (particularly the tip portion 220) of the male member 2 is inserted into each of the conductor recesses 322 and 322, the inner peripheral shape and size of each conductor recess 322 and 322 are adjusted to the tip portion 220. The shape and size correspond to each other so that the tip 220 can be inserted. In this example, in a state where the electrical connection portion 320 is provided on the inner wall surface forming the respective conductor recesses 322 and 322, a part of the region of the tip portion 220 near the terminal side insulating portion 23 can be inserted. The shape and size of the conductor recess 322 are adjusted. When the inner conductive cap portion 22 is inserted into the conductor recess 322, the inner conductor portion 32 and the inner conductive cap portion 22 are electrically connected via the electrical connection portion 320 as described above.

その他、この例の内側導体部３２は、各導体凹部３２２，３２２を形成する内底面に連通する貫通孔を備え、この貫通孔を冷媒１３０が流入される冷媒孔３２３とする。冷媒孔３２３の詳細は、後述の冷媒流路の項で説明する。 In addition, the inner conductor portion 32 of this example is provided with a through hole communicating with the inner bottom surface forming the respective conductor recesses 322 and 322, and this through hole is used as a refrigerant hole 323 into which the refrigerant 130 flows. Details of the refrigerant hole 323 will be described later in the section of the refrigerant flow path.

〔構成材料〕
内側導体部３２の構成材料は、内側導電キャップ部２２の構成材料の項で説明した常電導材料が挙げられる。上記構成材料の一部に超電導材料を含むことができる。 [Constituent material]
Examples of the constituent material of the inner conductor portion 32 include the normal conducting material described in the section of the constituent material of the inner conductive cap portion 22. A superconducting material can be included as a part of the above-mentioned constituent materials.

・・外側導電接続筒部
外側導電接続筒部３４は、その長手方向の中央部分に外側絶縁筒部３３を一体に保持し、この外側絶縁筒部３３を介して内側導体部３２に一体化される。外側導電接続筒部３４における外側絶縁筒部３３を覆っておらず露出される各端部には、雄型部材２の外側導電部２４が挿入されて接続される。この端部を外側導電部２４が電気的に接続される外側接続端部３４４とする。外側接続端部３４４の内周形状、大きさは、外側導電部２４に対応した形状、大きさであって、外側接続端部３４４の内周面に電気的接続部３４０が設けられた状態で外側導電部２４が挿入可能な大きさとする。外側導電接続筒部３４に外側導電部２４が挿入されると、上述のように、電気的接続部３４０を介して、外側導電接続筒部３４と外側導電部２４とが電気的に接続される。 .. Outer conductive connection cylinder portion The outer conductive connection cylinder portion 34 integrally holds the outer insulating cylinder portion 33 in the central portion in the longitudinal direction thereof, and is integrated with the inner conductor portion 32 via the outer insulating cylinder portion 33. To. The outer conductive portion 24 of the male member 2 is inserted and connected to each exposed end portion of the outer conductive connecting cylinder portion 34 that does not cover the outer insulating cylinder portion 33. This end portion is referred to as an outer connection end portion 344 to which the outer conductive portion 24 is electrically connected. The inner peripheral shape and size of the outer connecting end portion 344 are the shape and size corresponding to the outer conductive portion 24, and the electric connecting portion 340 is provided on the inner peripheral surface of the outer connecting end portion 344. The size is such that the outer conductive portion 24 can be inserted. When the outer conductive portion 24 is inserted into the outer conductive connection cylinder portion 34, the outer conductive connection cylinder portion 34 and the outer conductive portion 24 are electrically connected via the electrical connection portion 340 as described above. ..

その他、この例の外側導電接続筒部３４は、冷媒１３０が流入される冷媒孔３４３を備える。冷媒孔３４３の詳細は、後述の冷媒流路の項で説明する。 In addition, the outer conductive connection cylinder portion 34 of this example includes a refrigerant hole 343 into which the refrigerant 130 flows. Details of the refrigerant hole 343 will be described later in the section of the refrigerant flow path.

〔構成材料〕
外側導電接続筒部３４の構成材料は、内側導電キャップ部２２の構成材料の項で説明した常電導材料が挙げられる。上記構成材料の一部に超電導材料を含むことができる。 [Constituent material]
Examples of the constituent material of the outer conductive connecting cylinder portion 34 include the normal conductive material described in the section of the constituent material of the inner conductive cap portion 22. A superconducting material can be included as a part of the above-mentioned constituent materials.

・・外側絶縁筒部
外側絶縁筒部３３は、その長手方向の中央部分に内側導体部３２を一体に保持する。外側絶縁筒部３３において、内側導体部３２を覆わず、内側導体部３２の端部から開口部に至り、内側に向かって露出される各端部を、雄型部材２の端末側絶縁部２３の外周（ここではケーブルコア１１０の電気絶縁層１１３の外周でもある）に配置される外側絶縁端部３３３とする。内側導体部３２と外側導電接続筒部３４との間に、外側絶縁筒部３３の中央部分が介在される。内側導体部３２の端部近傍と外側導電接続筒部３４の外側接続端部３４４との間に、外側絶縁端部３３３が介在される。外側絶縁筒部３３の中央部分の厚さ、外側接続端部３４４の長さに応じて、内側導体部３２と外側導電接続筒部３４とを電気的に絶縁する。外側絶縁筒部３３は、外側導電接続筒部３４の軸方向の中心近くに内側導体部３２に位置するように両者を維持して、内側導体部３２と外側導電接続筒部３４との位置決め部材としても機能する。 The outer insulating cylinder portion 33 of the outer insulating cylinder portion 33 integrally holds the inner conductor portion 32 in the central portion in the longitudinal direction thereof. In the outer insulating cylinder portion 33, each end portion that does not cover the inner conductor portion 32, reaches the opening from the end portion of the inner conductor portion 32, and is exposed inward is the terminal side insulating portion 23 of the male member 2. The outer insulating end portion 333 is arranged on the outer periphery of the cable core 110 (here, it is also the outer periphery of the electrically insulating layer 113 of the cable core 110). The central portion of the outer insulating cylinder portion 33 is interposed between the inner conductor portion 32 and the outer conductive connecting cylinder portion 34. An outer insulating end 333 is interposed between the vicinity of the end of the inner conductor 32 and the outer connecting end 344 of the outer conductive connecting cylinder 34. The inner conductor portion 32 and the outer conductive connecting cylinder portion 34 are electrically insulated according to the thickness of the central portion of the outer insulating cylinder portion 33 and the length of the outer connecting end portion 344. The outer insulating cylinder portion 33 maintains both of the outer insulating cylinder portion 33 so as to be located at the inner conductor portion 32 near the center in the axial direction of the outer conductive connection cylinder portion 34, and is a positioning member between the inner conductor portion 32 and the outer conductive connection cylinder portion 34. Also works as.

このような外側絶縁筒部３３（特に外側接続端部３４４）は、超電導導体層１１２の露出箇所が接続される雄型部材２の内側導電キャップ部２２と、外側導電層１１４の露出箇所が接続される外側導電部２４との間の電気絶縁距離を、ケーブルコア１１０の長手方向に沿って確保する部材として機能する。所定の電気絶縁距離となるように、外側絶縁筒部３３の大きさ（長さ、直径、中央部分の厚さなど）、外側絶縁端部３３３の露出長さなどを調整する。外側絶縁端部３３３の厚さは、所定の絶縁特性を満たし、雄型部材２が挿入可能な範囲で適宜選択できる。 In such an outer insulating cylinder portion 33 (particularly, the outer connecting end portion 344), the inner conductive cap portion 22 of the male member 2 to which the exposed portion of the superconducting conductor layer 112 is connected and the exposed portion of the outer conductive layer 114 are connected. It functions as a member for ensuring the electrical insulation distance between the outer conductive portion 24 and the outer conductive portion 24 along the longitudinal direction of the cable core 110. The size (length, diameter, thickness of the central portion, etc.) of the outer insulating cylinder portion 33, the exposed length of the outer insulating end portion 333, and the like are adjusted so as to have a predetermined electrical insulation distance. The thickness of the outer insulating end portion 333 can be appropriately selected as long as it satisfies a predetermined insulating characteristic and the male member 2 can be inserted.

この例の外側絶縁筒部３３は、雄型部材２を雌型部材３に差し込んだ際、外側絶縁端部３３３と、雄型部材２の端末側絶縁部２３との間に所定の隙間が設けられる形状、大きさを有する。この隙間には冷媒１３０が充填され、上記隙間は、後述するように冷媒流路に利用される。上記隙間が設けられる構成では、外側絶縁筒部３３に雄型部材２を容易に挿入でき、作業性にも優れる。外側絶縁端部３３３と端末側絶縁部２３との間にスペーサ（図示せず）を設けると、上記隙間をより確実に維持できる。上記スペーサを両者の位置決めに利用できる場合がある。 In the outer insulating cylinder portion 33 of this example, when the male member 2 is inserted into the female member 3, a predetermined gap is provided between the outer insulating end portion 333 and the terminal side insulating portion 23 of the male member 2. It has the shape and size to be used. The gap is filled with the refrigerant 130, and the gap is used for the refrigerant flow path as described later. In the configuration in which the gap is provided, the male member 2 can be easily inserted into the outer insulating cylinder portion 33, and the workability is also excellent. If a spacer (not shown) is provided between the outer insulating end portion 333 and the terminal side insulating portion 23, the gap can be maintained more reliably. The spacer may be used for positioning both.

又は、外側絶縁筒部３３の内周面の少なくとも一部と端末側絶縁部２３とが接触する形状、大きさである外側絶縁筒部３３とすることもできる。 Alternatively, the outer insulating cylinder portion 33 may have a shape and size in which at least a part of the inner peripheral surface of the outer insulating cylinder portion 33 and the terminal-side insulating portion 23 are in contact with each other.

〔構成材料〕
外側絶縁筒部３３は、上述のように冷媒１３０に接触することから、その構成材料は、端末側絶縁部２３の構成材料の項で説明した電気絶縁材料が挙げられる。端末側絶縁部２３と同様に、上述の樹脂を含む場合、外側絶縁筒部３３の成形時に内側導体部３２と外側導電接続筒部３４との少なくとも一方を一体成型することができる。その他、接着剤を用いたり、機械的に係合可能な構成としたりするなどによって、内側導体部３２及び外側導電接続筒部３４と外側絶縁筒部３３とを備える雌型部材３を容易に製造できる。 [Constituent material]
Since the outer insulating cylinder portion 33 comes into contact with the refrigerant 130 as described above, the constituent material thereof includes the electrically insulating material described in the section of the constituent material of the terminal side insulating portion 23. Similar to the terminal-side insulating portion 23, when the above-mentioned resin is contained, at least one of the inner conductor portion 32 and the outer conductive connecting cylinder portion 34 can be integrally molded when the outer insulating cylinder portion 33 is molded. In addition, the female member 3 including the inner conductor portion 32, the outer conductive connecting cylinder portion 34, and the outer insulating cylinder portion 33 can be easily manufactured by using an adhesive or making the structure mechanically engageable. it can.

・・断熱部
断熱部３６は、超電導導体層１１２の端部を冷却する冷媒１３０が充填される箇所（ここでは後述の冷媒流路）の外周に設けられて、冷媒１３０に外部からの侵入熱が及ぶことを抑制する。ここで、雌型部材３のケーブル側凹部３１には、ケーブルコア１１０Ａの超電導導体層１１２、外側導電層１１４の一例である外側超電導層が挿入配置されるため、これらを冷却する冷媒１３０が充填される。断熱部３６によって、冷媒１３０の温度上昇を抑制して、所定の低温を維持し易くすることができる。 Insulation unit The heat insulation unit 36 is provided on the outer periphery of a portion (here, a refrigerant flow path described later) filled with a refrigerant 130 for cooling the end portion of the superconducting conductor layer 112, and heat invading the refrigerant 130 from the outside. Suppress the spread. Here, since the superconducting conductor layer 112 of the cable core 110A and the outer superconducting layer, which is an example of the outer conductive layer 114, are inserted and arranged in the cable-side recess 31 of the female member 3, the refrigerant 130 for cooling them is filled. Will be done. The heat insulating portion 36 can suppress the temperature rise of the refrigerant 130 and facilitate the maintenance of a predetermined low temperature.

断熱部３６は、真空断熱容器とすると断熱性に優れて好ましい。真空断熱容器は、例えば、ステンレス鋼などの金属製の筒状容器が挙げられる。真空断熱容器の真空度を超電導ケーブル１００の断熱管１２０と同程度としたり、真空断熱容器内に上述の断熱材（図示せず）を備えたりすると、断熱性により優れる。 The heat insulating portion 36 is preferably a vacuum heat insulating container because it has excellent heat insulating properties. Examples of the vacuum insulation container include a tubular container made of metal such as stainless steel. When the degree of vacuum of the vacuum heat insulating container is set to the same level as that of the heat insulating pipe 120 of the superconducting cable 100, or when the above-mentioned heat insulating material (not shown) is provided in the vacuum heat insulating container, the heat insulating property is more excellent.

断熱部３６に超電導ケーブル１００の断熱管１２０との接続部（図示せず）を備えて、ボルトなどの締結部材を用いた接続や溶接などが可能な構成とすると、施工性に優れる。その他、断熱部３６の長さを外側導電接続筒部３４よりも長くすることができる。この場合、断熱部３６と断熱管１２０とを断熱管１２０の径方向に重複させられて、断熱性を高められる。図１に示すように断熱部３６の長さと外側導電接続筒部３４の長さとを同等にすることができる。 If the heat insulating portion 36 is provided with a connecting portion (not shown) of the superconducting cable 100 to the heat insulating pipe 120 and can be connected or welded using a fastening member such as a bolt, the workability is excellent. In addition, the length of the heat insulating portion 36 can be made longer than that of the outer conductive connecting cylinder portion 34. In this case, the heat insulating portion 36 and the heat insulating pipe 120 are overlapped in the radial direction of the heat insulating pipe 120 to improve the heat insulating property. As shown in FIG. 1, the length of the heat insulating portion 36 and the length of the outer conductive connecting cylinder portion 34 can be made equal.

・・絶縁部材
断熱部３６が上述のように金属材料で構成される場合、断熱部３６と外側導電接続筒部３４とを電気的に絶縁する介在絶縁部３５を備えることができる。この例の介在絶縁部３５は、断熱部３６の全長に及ぶ長さの筒状体である。介在絶縁部３５の構成材料は、例えば端末側絶縁部２３の構成材料の項で説明した電気絶縁材料が挙げられる。 When the heat insulating member 36 is made of a metal material as described above, an intervening insulating portion 35 that electrically insulates the heat insulating portion 36 and the outer conductive connecting cylinder portion 34 can be provided. The intervening insulating portion 35 in this example is a tubular body having a length extending over the entire length of the heat insulating portion 36. Examples of the constituent material of the intervening insulating portion 35 include the electrical insulating material described in the section of the constituent material of the terminal side insulating portion 23.

・冷媒流路
雄型部材２には、ケーブルコア１１０の超電導導体層１１２や、外側導電層１１４の一例である外側超電導層が接続され得るため、これらを冷媒１３０によって冷却して、超電導状態に維持する必要がある。一方、雄型部材２は、代表的には常電導材料で構成される内側導電キャップ部２２及び外側導電部２４を備える。雌型部材３は、この内側導電キャップ部２２及び外側導電部２４が接続され、代表的には常電導材料で構成される内側導体部３２及び外側導電接続筒部３４を備える。これらの常電導材料で構成される部材は、交流通電時などに発熱し、冷媒１３０を加熱し得る。従って、雄型部材２の内外、雌型部材３内に冷媒１３０が流通可能な空間を有することが好ましい。この例の雄型部材２は、上述のように内側導電キャップ部２２に冷媒孔２２３を備えると共に、端末側絶縁部２３とケーブルコア１１０の電気絶縁層１１３との間に空間が形成される構成である。この例の雌型部材３は、内側導体部３２に冷媒孔３２３を、外側導電接続筒部３４の外側接続端部３４４に冷媒孔３４３を備える。また、雄型部材２を雌型部材３に差し込んだ際、端末側絶縁部２３と外側絶縁筒部３３との間に空間が形成されるように、両部材２，３が構成されている。 -Since the superconducting conductor layer 112 of the cable core 110 and the outer superconducting layer, which is an example of the outer conductive layer 114, can be connected to the male member 2, they are cooled by the refrigerant 130 to be in a superconducting state. Need to maintain. On the other hand, the male member 2 includes an inner conductive cap portion 22 and an outer conductive portion 24, which are typically made of a normal conductive material. The female member 3 includes an inner conductive cap portion 22 and an outer conductive portion 24 to which the inner conductive cap portion 22 and the outer conductive portion 24 are connected, and typically includes an inner conductor portion 32 and an outer conductive connecting cylinder portion 34 made of a normal conductive material. The members made of these normal conductive materials generate heat when alternating current is applied, and can heat the refrigerant 130. Therefore, it is preferable to have a space in which the refrigerant 130 can flow inside and outside the male member 2 and inside the female member 3. The male member 2 of this example has a configuration in which the inner conductive cap portion 22 is provided with a refrigerant hole 223 as described above, and a space is formed between the terminal side insulating portion 23 and the electrical insulating layer 113 of the cable core 110. Is. The female member 3 of this example is provided with a refrigerant hole 323 in the inner conductor portion 32 and a refrigerant hole 343 in the outer connection end portion 344 of the outer conductive connection cylinder portion 34. Further, both members 2 and 3 are configured so that a space is formed between the terminal side insulating portion 23 and the outer insulating cylinder portion 33 when the male member 2 is inserted into the female member 3.

その結果、図１の黒色矢印で示すように、一方の超電導ケーブル１００の断熱管１２０（図１では図示せず）内からの冷媒１３０は、一方の雄型部材２Ａの外側導電接続筒部３４に設けられた冷媒孔３４３から、雄型部材２Ａの端末側絶縁部２３と雌型部材３の外側絶縁筒部３３との間の空間及び内側導電キャップ部２２と内側導体部３２の導体凹部３２２を形成する内壁との間の空間を経て、内側導電キャップ部２２の冷媒孔２２３及び内側導体部３２の冷媒孔３２３に連続する冷媒流路を形成する。この例の冷媒流路は、更に、内側導体部３２の冷媒孔３２３を経て、他方の雄型部材２Ｂに備える内側導電キャップ部２２の冷媒孔２２３、この内側導電キャップ部２２と雌型部材３の導体凹部３２２（図１の右側）との間、雄型部材２Ｂの端末側絶縁部２３と雌型部材３の外側絶縁筒部３３との間、外側導電接続筒部３４の冷媒孔３４３（同）を順に経て、他方の超電導ケーブル１００の断熱管１２０内に連続する。この冷媒流路では、冷媒１３０が一方の超電導ケーブル側から他方の超電導ケーブル側に一方向に流通する。 As a result, as shown by the black arrow in FIG. 1, the refrigerant 130 from the inside of the heat insulating tube 120 (not shown in FIG. 1) of one of the superconducting cables 100 is the outer conductive connecting cylinder portion 34 of the one male member 2A. The space between the terminal-side insulating portion 23 of the male member 2A and the outer insulating cylinder portion 33 of the female member 3 and the conductor recess 322 of the inner conductive cap portion 22 and the inner conductor portion 32 from the refrigerant hole 343 provided in A refrigerant flow path continuous with the refrigerant hole 223 of the inner conductive cap portion 22 and the refrigerant hole 323 of the inner conductor portion 32 is formed through the space between the inner wall and the inner wall. The refrigerant flow path of this example further passes through the refrigerant hole 323 of the inner conductor portion 32, and further passes through the refrigerant hole 223 of the inner conductive cap portion 22 provided in the other male member 2B, and the inner conductive cap portion 22 and the female member 3 Between the conductor recess 322 (on the right side in FIG. 1), the terminal side insulating portion 23 of the male member 2B, and the outer insulating cylinder portion 33 of the female member 3, the refrigerant hole 343 of the outer conductive connecting cylinder portion 34 ( The same) is passed in order, and the cable is continuous in the heat insulating tube 120 of the other superconducting cable 100. In this refrigerant flow path, the refrigerant 130 circulates in one direction from one superconducting cable side to the other superconducting cable side.

冷媒孔２２３，３２３，３４３の形状、大きさ、個数などは適宜選択できる。図１では、冷媒孔２２３，３４３が縦断面Ｌ字状である場合を例示するが、各部材の端面と周面とを繋ぐ斜めの孔などとすることもできる。Ｌ字状の冷媒孔は、その開口部を各部材の端面と周面とに設けるため加工し易い上に、電気的接続部３２０，３４０を迂回する位置に開口部を設け易い。図１に示す冷媒孔２２３の各開口部（内側導電キャップ部２２の周面側の開口部及び端面側の開口部）は、電気的接続部３２０と実質的に干渉しない位置に設けられている。 The shape, size, number, and the like of the refrigerant holes 223, 323, 343 can be appropriately selected. In FIG. 1, the case where the refrigerant holes 223 and 343 have an L-shaped vertical cross section is illustrated, but it may be an oblique hole connecting the end face and the peripheral surface of each member. The L-shaped refrigerant hole is easy to process because the opening is provided on the end face and the peripheral surface of each member, and the opening is easily provided at a position bypassing the electrical connection portions 320 and 340. Each opening of the refrigerant hole 223 shown in FIG. 1 (the opening on the peripheral surface side and the opening on the end surface side of the inner conductive cap portion 22) is provided at a position that does not substantially interfere with the electrical connection portion 320. ..

各部材に備える一つあたりの冷媒孔の断面積を大きくしたり、小さい場合でも個数を多くしたりすれば、流通抵抗を小さくでき、冷媒１３０を流通させ易いため、冷媒１３０の温度上昇も抑制し易い。複数の小さい冷媒孔を備える場合、大きな冷媒孔を一つ備える場合に比較して、各部材の強度を高め易い。 By increasing the cross-sectional area of each refrigerant hole provided in each member, or by increasing the number of refrigerant holes even if they are small, the flow resistance can be reduced and the refrigerant 130 can be easily distributed, so that the temperature rise of the refrigerant 130 can be suppressed. Easy to do. When a plurality of small refrigerant holes are provided, the strength of each member can be easily increased as compared with the case where one large refrigerant hole is provided.

なお、接続する超電導ケーブル１００，１００間で冷媒１３０を流通させない場合、例えば、雌型部材３の冷媒孔３２３を省略したり、更に内側導電キャップ部２２の冷媒孔２２３も省略したりすることができる。フォーマ１１１が中空体であり、この内部空間も冷媒流路に利用する場合には、雄型部材２内の冷媒空間と両部材２，３間の冷媒空間とを区画して、独立した空間とすることができる。この場合、雄型部材２内の冷媒空間は、内側導電キャップ部２２でフォーマ１１１の開口部を封止すれば、両部材２，３間の冷媒空間とは区画した空間にできる。又は、上述のように端末側絶縁部２３に貫通孔を設けて、両冷媒空間を連通した空間とする形態とすることができる。 When the refrigerant 130 is not circulated between the connected superconducting cables 100 and 100, for example, the refrigerant hole 323 of the female member 3 may be omitted, or the refrigerant hole 223 of the inner conductive cap portion 22 may also be omitted. it can. When the former 111 is a hollow body and this internal space is also used for the refrigerant flow path, the refrigerant space in the male member 2 and the refrigerant space between the two members 2 and 3 are partitioned to form an independent space. can do. In this case, the refrigerant space in the male member 2 can be made a space separated from the refrigerant space between the two members 2 and 3 by sealing the opening of the former 111 with the inner conductive cap portion 22. Alternatively, as described above, a through hole may be provided in the terminal-side insulating portion 23 to form a space in which both refrigerant spaces are communicated with each other.

・雄型部材と雌型部材との接続状態
雄型部材２は、雌型部材３に対して、容易に着脱可能な構成とすることが好ましい。この場合、例えば、雌型部材３に差し込まれた雄型部材２を抜き取って、両部材２，３の接続箇所などを点検後、再度、雌型部材３に雄型部材２を接続すれば、超電導ケーブルの接続構造１を容易に再構築できる。例えば、雌型部材３のケーブル側凹部３１に差し込まれた一方の雄型部材２Ａをそのまま接続した状態で、相手側凹部３０から他方の雄型部材２Ｂを抜き取ってケーブルコア１１０Ｂを除去し、新しい超電導ケーブル１００のケーブルコア１１０に取り付けられた雄型部材２を雌型部材３の相手側凹部３０に差し込む。このとき、雌型部材３に接続されるケーブルコア１１０Ａに対して、特段の処理は不要であり、超電導ケーブルの交換や改修などを容易に行える上に、超電導ケーブルの接続構造１を容易に再構築できる。また、雌型部材３を再利用して、新しい超電導ケーブル１００，１００同士を接続することも容易に行える。 -Connection state between the male member and the female member It is preferable that the male member 2 has a configuration that can be easily attached to and detached from the female member 3. In this case, for example, if the male member 2 inserted into the female member 3 is pulled out, the connection points of both members 2 and 3 are inspected, and then the male member 2 is connected to the female member 3 again. The connection structure 1 of the superconducting cable can be easily reconstructed. For example, with one male member 2A inserted into the cable-side recess 31 of the female member 3 connected as it is, the other male member 2B is pulled out from the mating recess 30 to remove the cable core 110B, and a new one is used. The male member 2 attached to the cable core 110 of the superconducting cable 100 is inserted into the mating recess 30 of the female member 3. At this time, no special processing is required for the cable core 110A connected to the female member 3, the superconducting cable can be easily replaced or repaired, and the superconducting cable connection structure 1 can be easily re-established. Can be built. Further, the female member 3 can be reused to easily connect the new superconducting cables 100, 100 to each other.

雌型部材３に対して雄型部材２を着脱自在とする構成として、例えば、機械的接続部と電気的接続部とを独立した構成とすることが挙げられる。この場合、代表的には、機械的接続部と電気的接続部とにおける接続構造の長手方向の位置が異なる。 As a configuration in which the male member 2 is detachable from the female member 3, for example, the mechanical connection portion and the electrical connection portion may be made independent of each other. In this case, typically, the positions of the connection structures in the longitudinal direction are different between the mechanical connection portion and the electrical connection portion.

機械的接続部として、例えば、図３に示すように内側導電キャップ部２２と内側導体部３２とが互いに係合する係合部（ここではキー部２２１、キー溝３２１）、外側導電部２４と外側導電接続筒部３４とが互いに係合する係合部（ここではフランジ部２４１、嵌合凹部３４１）が挙げられる。各組における一方の係合部は、突起や突条、ばね片など、他方の嵌合部は突起や突条、ばね片が嵌め込まれる溝や孔、凹みなどであって、回転したり圧入したりするなどして、係合状態が維持可能なロック構造を構築できるものが挙げられる。具体例として、内側導電キャップ部２２に突起を設け、内側導体部３２にその軸方向に延び、かつその周方向にも延びるＬ字状の溝を設け、上記突起をキー部２２１、Ｌ字状の溝をキー溝３２１とする構成などが挙げられる。キー部２２１をキー溝３２１における上記の軸方向の溝に嵌め、上記の軸方向の溝の終端で雌型部材３を回転させ、キー部２２１を上記の周方向の溝に移行することで、雄型部材２と雌型部材と３を機械的に連結することができる。公知のロック構造を利用できる。雄型部材２の内側導電キャップ部２２と雌型部材３の内側導体部３２との組、及び雄型部材２の外側導電部２４と雌型部材３の外側導電接続筒部３４との組の双方の組が上記着脱自在とする機械的接続部を備えると、雄型部材２と雌型部材３との間の相対位置を固定できる上に、冷媒１３０の導入時の熱収縮などに起因する両組の相対位置のずれをより確実に低減し易い。 As the mechanical connecting portion, for example, as shown in FIG. 3, the engaging portion (here, the key portion 221 and the key groove 321) in which the inner conductive cap portion 22 and the inner conductor portion 32 are engaged with each other, and the outer conductive portion 24 Examples thereof include an engaging portion (here, a flange portion 241 and a fitting recess 341) in which the outer conductive connecting cylinder portion 34 is engaged with each other. One engaging part in each set is a protrusion, ridge, spring piece, etc., and the other fitting part is a protrusion, ridge, groove, hole, dent, etc. into which the spring piece is fitted, and is rotated or press-fitted. For example, a lock structure that can maintain an engaged state can be constructed. As a specific example, the inner conductive cap portion 22 is provided with a protrusion, the inner conductor portion 32 is provided with an L-shaped groove extending in the axial direction and also extending in the circumferential direction thereof, and the protrusion is provided with a key portion 221 and an L-shape. A configuration in which the groove of the key groove 321 is used is mentioned. By fitting the key portion 221 into the above-mentioned axial groove in the key groove 321 and rotating the female member 3 at the end of the above-mentioned axial groove, the key portion 221 is transferred to the above-mentioned circumferential groove. The male member 2 and the female member 3 can be mechanically connected. A known lock structure can be used. A pair of the inner conductive cap portion 22 of the male member 2 and the inner conductor portion 32 of the female member 3, and a pair of the outer conductive portion 24 of the male member 2 and the outer conductive connecting cylinder portion 34 of the female member 3. When both sets are provided with the detachable mechanical connection portion, the relative position between the male member 2 and the female member 3 can be fixed, and the heat shrinkage at the time of introducing the refrigerant 130 is caused. It is easier to reduce the deviation of the relative positions of both sets more reliably.

別の機械的接続部として、フランジ結合を行う構成が挙げられる。詳しくは、外側導電部２４にその周縁から径方向外方に延設されるフランジ部２４１又は複数のフランジ片（図示せず）を備え、外側導電接続筒部３４にフランジ部２４１などが嵌め込まれる嵌合凹部３４１を備え、両者をボルトなどの締結部材で固定する。図３では、嵌合凹部３４１に嵌め込まれたフランジ部２４１のケーブルコア側の面を押える環状の押え板材３４２を備える場合を例示する。例えば、外側導電部２４と外側導電接続筒部３４との組に上記フランジ結合を行う機械的接続部を備える場合、内側導電キャップ部２２と内側導体部３２との組に機械的接続部を備えていなくても、雄型部材２と雌型部材３との間の相対位置を固定できる。 Another mechanical connection includes a flange coupling configuration. Specifically, the outer conductive portion 24 is provided with a flange portion 241 or a plurality of flange pieces (not shown) extending radially outward from the peripheral edge thereof, and the flange portion 241 or the like is fitted into the outer conductive connecting cylinder portion 34. A fitting recess 341 is provided, and both are fixed with a fastening member such as a bolt. FIG. 3 illustrates a case in which an annular pressing plate member 342 that presses the surface of the flange portion 241 fitted in the fitting recess 341 on the cable core side is provided. For example, when the pair of the outer conductive portion 24 and the outer conductive connecting cylinder portion 34 is provided with the mechanical connecting portion for performing the flange coupling, the pair of the inner conductive cap portion 22 and the inner conductor portion 32 is provided with the mechanical connecting portion. Even if it is not, the relative position between the male member 2 and the female member 3 can be fixed.

上述の双方の組が機械的接続部を有する場合に各組に備える機械的接続部は同じ構成とする他、異なる構成とすることができる。上記フランジ結合の場合で説明したように、いずれか一方の組が機械的接続部を有し、他方の組が機械的接続部を有しないこともできる。 When both sets described above have a mechanical connection portion, the mechanical connection portions provided in each set may have the same configuration or different configurations. As described in the case of the flange coupling, one set may have a mechanical connection and the other set may not have a mechanical connection.

なお、上記機械的接続部に代えて、雌型部材３に真空断熱容器からなる断熱部３６が固定されている場合、断熱部３６を介して、雄型部材２と雌型部材３との間の相対位置を間接的に固定することができる。具体的な構成として、超電導ケーブル１００の端部に設けられる接続用の断熱部材（図示せず）と雄型部材２とが固定され、断熱部３６及び断熱部材に設けられたフランジ間を固定することが挙げられる。 When the heat insulating portion 36 made of a vacuum heat insulating container is fixed to the female mold member 3 instead of the mechanical connecting portion, the male mold member 2 and the female mold member 3 are separated from each other via the heat insulating portion 36. The relative position of can be fixed indirectly. As a specific configuration, a heat insulating member (not shown) for connection provided at the end of the superconducting cable 100 and a male member 2 are fixed, and the space between the heat insulating portion 36 and the flanges provided on the heat insulating member is fixed. Can be mentioned.

着脱可能な電気的接続部として、この例では、上述のように内側導体部３２の導体凹部３２２の内周面に複数のばね状接触子が環状に配置された接触部材から構成される電気的接続部３２０を備える。この接触部材は、マルチコンタクト、コンタクトバンド、マルチバンドなどと呼ばれ、コネクタ部材として利用されるものが挙げられる。外側導電接続筒部３４の外側接続端部３４４の内周面には、上記接触部材から構成される電気的接続部３４０を備える。上記接触部材から構成される電気的接続部３２０，３４０を備えることで、接触部材の弾性を利用して、容易に着脱できる。 As the detachable electrical connection portion, in this example, as described above, the electrical connection is composed of a contact member in which a plurality of spring-like contacts are annularly arranged on the inner peripheral surface of the conductor recess 322 of the inner conductor portion 32. A connection portion 320 is provided. This contact member is called a multi-contact, a contact band, a multi-band, or the like, and examples thereof include those used as a connector member. An electrical connection portion 340 composed of the contact member is provided on the inner peripheral surface of the outer connection end portion 344 of the outer conductive connection cylinder portion 34. By providing the electrical connection portions 320 and 340 composed of the contact member, the contact member can be easily attached and detached by utilizing the elasticity of the contact member.

なお、着脱可能であれば、機械的接続部と電気的接続部とが一体の部材であるものを利用できる。この場合、機械的接続部と電気的接続部とにおける接続構造の長手方向の位置が等しくなる。 If it is removable, it is possible to use a member in which the mechanical connection portion and the electrical connection portion are integrated. In this case, the positions of the connection structures in the longitudinal direction at the mechanical connection and the electrical connection are equal.

（超電導ケーブルの接続構造の製造方法）
実施形態１の超電導ケーブルの接続構造１は、例えば、以下の各工程を備える製造方法によって構築できる。以下、各工程の概略を述べる。 (Manufacturing method of superconducting cable connection structure)
The connection structure 1 of the superconducting cable of the first embodiment can be constructed by, for example, a manufacturing method including the following steps. The outline of each process will be described below.

・ケーブルコアの端末処理工程
超電導ケーブル１００の端部において、断熱管１２０から所定の長さのケーブルコア１１０を出して段剥ぎして、図２の左図に示すように、フォーマ１１１、超電導導体層１１２、電気絶縁層１１３、外側導電層１１４などを順に露出する。断熱管１２０は、例えば、その端部を封止部材などで封止して真空断熱層を形成しておくと、雌型部材３の断熱部３６との接続を容易に行えて施工性に優れる上に、断熱性能に対する信頼性にも優れる。 -Terminal processing step of cable core At the end of the superconducting cable 100, a cable core 110 having a predetermined length is taken out from the heat insulating tube 120 and stripped off, and as shown in the left figure of FIG. 2, the former 111 and the superconducting conductor The layer 112, the electrically insulating layer 113, the outer conductive layer 114, and the like are exposed in this order. For example, if the end portion of the heat insulating pipe 120 is sealed with a sealing member or the like to form a vacuum heat insulating layer, the female member 3 can be easily connected to the heat insulating portion 36 and is excellent in workability. In addition, it has excellent reliability for heat insulation performance.

・雄型部材の取付工程
図２に示すように、段剥ぎしたケーブルコア１１０の端部に、雄型部材２を取り付ける。上述のように適宜半田などの接合材を用いたり、圧縮接続を行ったりすることで、雄型部材２とケーブルコア１１０とを強固に接続できる。上述の端末処理工程及びこの取付工程は、布設現場は勿論、工場でも行える。工場で行う場合、雄型部材２付きケーブルコア１１０を備える超電導ケーブル１００を布設現場に搬送すればよい。 -Attachment process of the male member As shown in FIG. 2, the male member 2 is attached to the end of the cable core 110 that has been stripped off. As described above, the male member 2 and the cable core 110 can be firmly connected by appropriately using a bonding material such as solder or performing a compression connection. The above-mentioned terminal processing step and this mounting step can be performed not only at the laying site but also at the factory. In the case of performing at a factory, the superconducting cable 100 including the cable core 110 with the male member 2 may be transported to the laying site.

・雄型部材と雌型部材との接続工程
図３に示すように、ケーブルコア１１０Ａの端部に取り付けられた雄型部材２Ａを雌型部材３のケーブル側凹部３１に差し込む。ケーブルコア１１０Ｂの端部に取り付けられた雄型部材２Ｂを相手側凹部３０に差し込む。この例では、着脱自在な機械的接続部（キー部２２１及びキー溝３２１、フランジ部２４１及び嵌合凹部３４１）及び電気的接続部３２０，３４０を備えるため、この挿入作業を容易に行える。この差込よって、内側導電キャップ部２２と内側導体部３２同士、外側導電部２４と外側導電接続筒部３４同士をそれぞれ電気的に接続できる。また、機械的接続部によって機械的に接続できる。
上述の工程によって、実施形態１の超電導ケーブルの接続構造１を備える新規の超電導ケーブルの中間接続構造を構築できる。 -Connection process between the male member and the female member As shown in FIG. 3, the male member 2A attached to the end of the cable core 110A is inserted into the cable-side recess 31 of the female member 3. The male member 2B attached to the end of the cable core 110B is inserted into the mating recess 30. In this example, since the detachable mechanical connection portion (key portion 221 and key groove 321; flange portion 241 and fitting recess 341) and the electrical connection portions 320 and 340 are provided, this insertion operation can be easily performed. By this insertion, the inner conductive cap portion 22 and the inner conductor portion 32 can be electrically connected to each other, and the outer conductive portion 24 and the outer conductive connecting cylinder portion 34 can be electrically connected to each other. In addition, it can be mechanically connected by a mechanical connection portion.
By the above-mentioned steps, an intermediate connection structure of a new superconducting cable including the connection structure 1 of the superconducting cable of the first embodiment can be constructed.

・点検時
構築した中間接続構造の内部を点検などする場合には、雌型部材３から雄型部材２Ａ，２Ｂを抜き取って両部材２，３の接続箇所などを点検する。点検後、再度、雌型部材３に雄型部材２Ａ，２Ｂを差し込む。こうすることで、実施形態１の超電導ケーブルの接続構造１を備える超電導ケーブルの中間接続構造を再構築できる。 -During inspection When inspecting the inside of the constructed intermediate connection structure, remove the male members 2A and 2B from the female member 3 and inspect the connection points of both members 2 and 3. After the inspection, the male members 2A and 2B are inserted into the female member 3 again. By doing so, the intermediate connection structure of the superconducting cable including the connection structure 1 of the superconducting cable of the first embodiment can be reconstructed.

・交換時
例えば、一方のケーブルコア１１０Ａを備える超電導ケーブル１００をそのまま利用し、他方のケーブルコア１１０Ｂを備える超電導ケーブル１００を新しい超電導ケーブル１００に交換する場合、雌型部材３の相手側凹部３０から雄型部材２Ｂを抜き取って、古いケーブルコア１１０Ｂを備える超電導ケーブル１００を除去する。新しい超電導ケーブル１００のケーブルコア１１０の端部に新しい雄型部材２を取り付け、この雄型部材２を雌型部材３の相手側凹部３０に差し込む。このように実施形態１の超電導ケーブルの接続構造１を備える超電導ケーブルの中間接続構造は、ケーブル交換や改修も容易に行える。 -At the time of replacement For example, when the superconducting cable 100 having one cable core 110A is used as it is and the superconducting cable 100 having the other cable core 110B is replaced with a new superconducting cable 100, the recess 30 on the other side of the female member 3 is used. The male member 2B is pulled out to remove the superconducting cable 100 including the old cable core 110B. A new male member 2 is attached to the end of the cable core 110 of the new superconducting cable 100, and the male member 2 is inserted into the mating recess 30 of the female member 3. As described above, the intermediate connection structure of the superconducting cable provided with the connection structure 1 of the superconducting cable of the first embodiment can be easily replaced or repaired.

（効果）
実施形態１の超電導ケーブルの接続構造１は、特定の雄型部材２によって、超電導ケーブル１００に備えるケーブルコア１１０の端部に設けられる超電導導体層１１２の接続箇所と外側導電層１１４の接続箇所との相対位置を固定でき、特定の雌型部材３によって、雄型部材２による相対位置の固定状態を維持して、機械的接続、電気的接続を行える。従って、実施形態１の超電導ケーブルの接続構造１は、超電導導体層１１２と外側導電層１１４との相対的な移動を防止でき、この相対移動に起因して、ケーブルコア１１０の電気絶縁層１１３に電気絶縁強度の低下部分が局所的に生じることを効果的に防止して、電気絶縁特性に対する信頼性を高められる。 (effect)
The connection structure 1 of the superconducting cable of the first embodiment includes a connection portion of the superconducting conductor layer 112 and a connection portion of the outer conductive layer 114 provided at the end of the cable core 110 provided in the superconducting cable 100 by a specific male member 2. The relative position of the above can be fixed, and the fixed state of the relative position by the male member 2 can be maintained by the specific female member 3, and mechanical connection and electrical connection can be performed. Therefore, the connection structure 1 of the superconducting cable of the first embodiment can prevent the relative movement of the superconducting conductor layer 112 and the outer conductive layer 114, and due to this relative movement, the electrical insulating layer 113 of the cable core 110 It is possible to effectively prevent a portion where the electrical insulation strength is lowered from occurring locally, and to improve the reliability of the electrical insulation characteristics.

詳しくは、雄型部材２は、超電導導体層１１２が接続される内側導電キャップ部２２の位置と、外側導電層１１４が接続される外側導電部２４の位置とを端末側絶縁部２３によって規定する。この雄型部材２が雌型部材３に接続されることで、超電導導体層１１２の接続箇所の位置と外側導電層１１４の接続箇所の位置とが端末側絶縁部２３及び外側絶縁筒部３３によって固定されて、上記相対位置が固定される。 Specifically, in the male member 2, the position of the inner conductive cap portion 22 to which the superconducting conductor layer 112 is connected and the position of the outer conductive portion 24 to which the outer conductive layer 114 is connected are defined by the terminal-side insulating portion 23. .. By connecting the male member 2 to the female member 3, the position of the connection portion of the superconducting conductor layer 112 and the position of the connection portion of the outer conductive layer 114 are determined by the terminal side insulating portion 23 and the outer insulating cylinder portion 33. It is fixed and the relative position is fixed.

また、実施形態１の超電導ケーブルの接続構造１は、雌型部材３に接続される超電導ケーブル１００及び接続対象（この例では別の超電導ケーブル１００）のうち、一方を雌型部材３に接続したままで他方を雌型部材３から取り外せる。そのため、雌型部材３に接続されたままの別の超電導ケーブル１００のケーブルコア１１０は、各部位間の相対的な変位が実質的に生じず、再冷却した場合にも各部位の応力を管理し易い。また、一方を雌型部材３に接続したままで他方の取外しが行える点は、コストの低減、接続構造の品質の向上にもつながる。 Further, in the superconducting cable connection structure 1 of the first embodiment, one of the superconducting cable 100 connected to the female member 3 and the connection target (another superconducting cable 100 in this example) is connected to the female member 3. Until then, the other can be removed from the female member 3. Therefore, the cable core 110 of another superconducting cable 100 that remains connected to the female member 3 substantially does not cause relative displacement between the respective parts, and manages the stress of each part even when recooled. Easy to do. Further, the fact that one can be removed while the other is connected to the female member 3 leads to a reduction in cost and an improvement in the quality of the connection structure.

更に、実施形態１の超電導ケーブルの接続構造１は、雌型部材３に雄型部材２を差し込む構成であるため、上述の中間接続部材の各端部に補強絶縁部を形成する場合に比較して、電気絶縁部分におけるケーブル長手方向の長さを短くできる。又は、上記電気絶縁部分の長さを短くせず、ケーブル全長を一定としたままで絶縁距離をより長くする場合には、電気絶縁性能を高めることができる。 Further, since the connection structure 1 of the superconducting cable of the first embodiment has a configuration in which the male member 2 is inserted into the female member 3, it is compared with the case where the reinforcing insulating portion is formed at each end of the intermediate connection member described above. Therefore, the length of the electrically insulated portion in the longitudinal direction of the cable can be shortened. Alternatively, when the length of the electrically insulating portion is not shortened and the insulation distance is lengthened while keeping the total length of the cable constant, the electrical insulation performance can be improved.

加えて、実施形態１の超電導ケーブルの接続構造１は、雌型部材３に雄型部材２を差し込むことで、新規構築を容易に行える上に、再構築も容易に行え、点検や改修などの作業性にも優れる。 In addition, the connection structure 1 of the superconducting cable of the first embodiment can be easily newly constructed by inserting the male member 2 into the female member 3, and can be easily reconstructed for inspection and repair. Excellent workability.

その他、実施形態１の超電導ケーブルの接続構造１は、以下の効果も期待できる。
（Ａ）雌型部材３が断熱部３６を一体に備えており、断熱部３６の内側に位置する部材内で流通する冷媒１３０の温度上昇を抑制できる上に、断熱部３６を別途構築する必要が無く、施工性に優れる。
（Ｂ）雄型部材２及び雌型部材３内に冷媒１３０が流通する冷媒流路を備え、雌型部材３が冷媒流路の接続部材としても機能する。そのため、雄型部材２及び雌型部材３の導電部分が常電導材料で構成される場合でも、常電導部分を冷媒１３０によって直接冷却でき、冷媒１３０の温度上昇を抑制できる。従って、超電導導体層１１２などの超電導状態を良好に維持できる。
（Ｃ）雄型部材２及び雌型部材３が機械的接続部（キー部２２１及びキー溝３２１など）と、電気的接続部３２０，３４０とを備えることで、雌型部材３に対して雄型部材２の着脱を容易に行えて施工性に優れる。
（Ｄ）雌型部材３の再利用によって、新しい部材を利用する場合に比較して、コストの低減を期待できる。 In addition, the connection structure 1 of the superconducting cable of the first embodiment can be expected to have the following effects.
(A) The female member 3 is integrally provided with the heat insulating portion 36, and it is necessary to separately construct the heat insulating portion 36 in addition to being able to suppress the temperature rise of the refrigerant 130 circulating in the member located inside the heat insulating portion 36. Excellent workability.
(B) The male member 2 and the female member 3 are provided with a refrigerant flow path through which the refrigerant 130 flows, and the female member 3 also functions as a connecting member of the refrigerant flow path. Therefore, even when the conductive portions of the male member 2 and the female member 3 are made of the normal conductive material, the normal conductive portion can be directly cooled by the refrigerant 130, and the temperature rise of the refrigerant 130 can be suppressed. Therefore, the superconducting state of the superconducting conductor layer 112 and the like can be maintained satisfactorily.
(C) The male member 2 and the female member 3 are provided with mechanical connection portions (key portion 221 and key groove 321 and the like) and electrical connection portions 320 and 340, so that the male member 3 is male to the female member 3. The mold member 2 can be easily attached and detached, and is excellent in workability.
(D) By reusing the female member 3, cost reduction can be expected as compared with the case of using a new member.

［実施形態２］
実施形態１で説明した実施形態の超電導ケーブル用接続部材（雄型部材２、雌型部材３）は、超電導ケーブルと常温環境で利用される常電導機器（図示せず）との接続に利用できる。実施形態２の超電導ケーブルの接続構造は、超電導ケーブルの端末構造を構築するものであり、上述のケーブルコア１１０の端部に取り付けられた雄型部材２と、雄型部材２がケーブル側凹部３１に挿入配置されると共に、接続対象である常電導機器の常電導導体が相手側凹部３０に挿入配置される雌型部材３とを備える。基本的構成及びその効果は、実施形態１を参照するとよい。
常電導機器は、保護機器や遮断器などで構成される変電設備、地中ケーブルや架空送電線などの常電導ケーブルなどが挙げられる。 [Embodiment 2]
The superconducting cable connecting member (male member 2, female member 3) of the embodiment described in the first embodiment can be used for connecting the superconducting cable and a normal conductive device (not shown) used in a normal temperature environment. .. The connection structure of the superconducting cable of the second embodiment constructs the terminal structure of the superconducting cable, and the male member 2 attached to the end of the cable core 110 described above and the male member 2 are the cable side recess 31. Also includes a female member 3 in which the normal conducting conductor of the normal conducting device to be connected is inserted and placed in the mating recess 30. The basic configuration and its effects may be referred to in Embodiment 1.
Examples of the normal conducting equipment include substation equipment composed of protective equipment and circuit breakers, and normal conducting cables such as underground cables and overhead transmission lines.

本発明は、これらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味及び範囲内での全ての変更が含まれることが意図される。
例えば、以下の変更が可能である。
（１）断熱部を雌型部材とは独立して備えることができる。
例えば、雌型部材の長手方向に二分割された分割断熱部とし、両分割断熱部を接続することで、雌型部材の全長を覆う構成とすることが挙げられる。この場合、雄型部材と雌型部材との接続前、一方の分割断熱部を超電導ケーブル側に逃がしておき、他方の分割断熱部を接続対象側に逃がしておき、雄型部材と雌型部材との接続後、両分割断熱部を接続することが挙げられる。
各分割断熱部は、真空断熱構造とすると、断熱性を高められる。両分割断熱部の接続箇所を重複させると、断熱性を更に高められる。
この形態では、雌型部材の外側導電接続筒部と断熱部との間に介在絶縁部を設ける場合、絶縁紙の巻回層などとすることができる。
この構成は、実施形態１，２は勿論、以下の（２）〜（５）にも適用できる。
（２）雄型部材２の構成要素（内側導電キャップ部２２、端末側絶縁部２３、外側導電部２４）が一体物ではなく、施工時に順次組み付けられる形態とすることができる。
この形態では、例えば、内側導電キャップ部２２と超電導導体層１１２とを半田などの接合材で接続する場合に端末側絶縁部２３が熱影響を実質的に受けない。この形態は、各要素をねじ結合などする構成が挙げられる。その他、上述の三つの構成要素のうち、隣り合う二つの構成要素（内側導電キャップ部２２と端末側絶縁部２３との組、端末側絶縁部２３と外側導電部２４との組）が一体化され、残る一つの構成要素がねじ結合される形態などとすることもできる。こうすることで、施工時の部品を小さくでき、搬送などし易い。
（３）多心一括型の超電導ケーブルに適用できる。
この場合、例えば、各ケーブルコアに取り付けられる雄型部材と、各雄型部材が挿入される複数のケーブル側凹部を備える雌型部材とを備える接続構造とすることが挙げられる。雌型部材のケーブル側凹部の個数は、雄型部材の個数以上であればよい。
又は、雌型部材は、例えば、内側導体部、外側絶縁筒部、外側導電接続筒部を一つのユニットとし、ケーブルコア数以上の複数のユニットと、複数のユニットの外周に一括して設けられる一括断熱部と、ユニット間に介在される絶縁材及びユニットと一括断熱部との間に介在される絶縁材とを備えるものとすることができる。
（４）直流送電用の超電導ケーブルに適用できる。
（５）複数の超電導導体層を同軸に備える同軸超電導ケーブルに適用できる。
この場合、雄型部材は、第一外側導電部、第一端末側絶縁部、第二外側導電部、第二端末側絶縁部、…というように、外側導電部と端末側絶縁部とが交互に多層に設けられると共に、内側導電キャップ部からみて、順次段が下がる段差形状となるように、複数の外側導電部及び複数の端末側絶縁部を備えることが挙げられる。
雌型部材は、複数の外側導電部及び複数の端末側絶縁部がつくる段差形状に対応した複数の外側導電接続筒部及び複数の外側絶縁筒部を備え、各外側導電接続筒部の端部が階段状に並べられることが挙げられる。 The present invention is not limited to these examples, and is indicated by the scope of claims, and is intended to include all modifications within the meaning and scope equivalent to the scope of claims.
For example, the following changes can be made.
(1) The heat insulating portion can be provided independently of the female member.
For example, it is possible to form a split heat insulating portion divided into two in the longitudinal direction of the female mold member and to cover the entire length of the female mold member by connecting both split heat insulating portions. In this case, before connecting the male member and the female member, one of the split heat insulating portions is released to the superconducting cable side, and the other divided heat insulating portion is released to the connection target side, so that the male member and the female member are released. After the connection with, it is possible to connect both divided heat insulating parts.
If each divided heat insulating portion has a vacuum heat insulating structure, the heat insulating property can be enhanced. If the connection points of the two split heat insulating parts are overlapped, the heat insulating property can be further improved.
In this form, when an intervening insulating portion is provided between the outer conductive connecting cylinder portion of the female member and the heat insulating portion, it can be a wound layer of insulating paper or the like.
This configuration can be applied not only to the first and second embodiments but also to the following (2) to (5).
(2) The components (inner conductive cap portion 22, terminal-side insulating portion 23, outer conductive portion 24) of the male member 2 are not integrally formed, but may be assembled in sequence during construction.
In this embodiment, for example, when the inner conductive cap portion 22 and the superconducting conductor layer 112 are connected by a bonding material such as solder, the terminal-side insulating portion 23 is substantially unaffected by heat. This form includes a configuration in which each element is screwed and connected. In addition, of the above three components, two adjacent components (a pair of the inner conductive cap portion 22 and the terminal-side insulating portion 23 and a pair of the terminal-side insulating portion 23 and the outer conductive portion 24) are integrated. It is also possible to form a form in which the remaining one component is screwed together. By doing so, the parts at the time of construction can be made smaller, and it is easy to carry them.
(3) Applicable to multi-core batch type superconducting cables.
In this case, for example, a connection structure including a male member attached to each cable core and a female member having a plurality of cable-side recesses into which each male member is inserted can be mentioned. The number of cable-side recesses of the female member may be equal to or greater than the number of male members.
Alternatively, the female member is provided, for example, with the inner conductor portion, the outer insulating cylinder portion, and the outer conductive connecting cylinder portion as one unit, a plurality of units having a number of cable cores or more, and the outer periphery of the plurality of units. It is possible to include a collective heat insulating portion, an insulating material interposed between the units, and an insulating material interposed between the unit and the collective heat insulating portion.
(4) Applicable to superconducting cables for DC power transmission.
(5) It can be applied to a coaxial superconducting cable having a plurality of superconducting conductor layers coaxially.
In this case, in the male member, the outer conductive portion and the terminal side insulating portion alternate, such as the first outer conductive portion, the first terminal side insulating portion, the second outer conductive portion, the second terminal side insulating portion, and so on. In addition to being provided in multiple layers, a plurality of outer conductive portions and a plurality of terminal-side insulating portions may be provided so as to form a stepped shape in which the steps are sequentially lowered when viewed from the inner conductive cap portion.
The female member includes a plurality of outer conductive connecting cylinders and a plurality of outer insulating cylinders corresponding to a step shape formed by a plurality of outer conductive portions and a plurality of terminal-side insulating portions, and an end portion of each outer conductive connecting cylinder. Can be mentioned in a staircase pattern.

１ 超電導ケーブルの接続構造
２，２Ａ，２Ｂ 雄型部材（超電導ケーブル用接続部材）
２２ 内側導電キャップ部 ２２０ 突端部 ２２２ 導体挿入部 ２２３ 冷媒孔
２２１ キー部
２３ 端末側絶縁部
２４ 外側導電部 ２４１ フランジ部
３ 雌型部材（超電導ケーブル用接続部材）
３１ ケーブル側凹部 ３０ 相手側凹部
３２ 内側導体部 ３２２ 導体凹部 ３２３ 冷媒孔
３２０ 電気的接続部 ３２１ キー溝
３３ 外側絶縁筒部 ３３３ 外側絶縁端部
３４ 外側導電接続筒部 ３４４ 外側接続端部 ３４３ 冷媒孔
３４０ 電気的接続部 ３４１ 嵌合凹部 ３４２ 押え板材
３５ 介在絶縁部
３６ 断熱部
１００ 超電導ケーブル １１０，１１０Ａ，１１０Ｂ ケーブルコア
１１１ フォーマ １１２ 超電導導体層 １１３ 電気絶縁層
１１４ 外側導電層 １１５ 保護層
１２０ 断熱管 １２１ 内管 １２２ 外管 １２４ 防食層 １３０ 冷媒 1 Superconducting cable connection structure 2,2A, 2B Male member (superconducting cable connection member)
22 Inner conductive cap part 220 Protrusion part 222 Conductor insertion part 223 Refrigerant hole 221 Key part 23 Terminal side insulation part 24 Outer conductive part 241 Flange part 3 Female member (connecting member for superconducting cable)
31 Cable side recess 30 Opposite side recess 32 Inner conductor part 322 Conductor recess 323 Refrigerant hole 320 Electrical connection part 321 Key groove 33 Outer insulation cylinder part 333 Outer insulation end 34 Outer conductive connection cylinder 344 Outer connection end 343 Refrigerant hole
340 Electrical connection 341 Fitting recess 342 Presser plate 35 Intervening insulation 36 Insulation 100 Superconducting cable 110, 110A, 110B Cable core 111 Former 112 Superconducting conductor layer 113 Electrical insulation layer 114 Outer conductive layer 115 Protective layer 120 Insulation pipe 121 Inner pipe 122 Outer pipe 124 Anticorrosion layer 130 Coolant

Claims (7)

超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルの端部に設けられる超電導ケーブルの接続構造であって、
段剥ぎされた前記ケーブルコアの端部に取り付けられる雄型部材と、
前記雄型部材が挿入されるケーブル側凹部と、前記超電導ケーブルの接続対象が挿入される相手側凹部とを備える雌型部材と、
前記超電導導体層の端部の外周に設けられる断熱部とを備え、
前記雄型部材は、
前記超電導導体層の端部が挿入される導体挿入部を備え、前記超電導導体層に電気的に接続される内側導電キャップ部と、
前記外側導電層の端部に電気的に接続される外側導電部と、
前記内側導電キャップ部と前記外側導電部とを電気的に絶縁した状態で接続し、前記電気絶縁層の外周に配置される端末側絶縁部とを備え、
前記雌型部材は、
前記ケーブル側凹部の一部が設けられ、前記内側導電キャップ部と電気的に接続される内側導体部と、
前記内側導体部に同軸に設けられ、前記外側導電部に電気的に接続される外側接続端部を備える外側導電接続筒部と、
前記内側導体部と前記外側導電接続筒部との間に介在されて両者を電気的に絶縁し、前記端末側絶縁部の外周に配置される外側絶縁端部を備える外側絶縁筒部とを備える超電導ケーブルの接続構造。 It is a connection structure of a superconducting cable provided at the end of a superconducting cable including a cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a heat insulating tube containing the cable core and filled with a refrigerant. hand,
A male member attached to the end of the cable core that has been stripped off,
A female member having a cable-side recess into which the male member is inserted and a mating recess into which the connection target of the superconducting cable is inserted.
It is provided with a heat insulating portion provided on the outer periphery of the end portion of the superconducting conductor layer.
The male member is
An inner conductive cap portion that includes a conductor insertion portion into which an end portion of the superconducting conductor layer is inserted and is electrically connected to the superconducting conductor layer,
An outer conductive portion that is electrically connected to the end of the outer conductive layer,
The inner conductive cap portion and the outer conductive portion are connected in an electrically insulated state, and a terminal-side insulating portion arranged on the outer periphery of the electrically insulating layer is provided.
The female member is
An inner conductor portion provided with a part of the cable-side recess and electrically connected to the inner conductive cap portion,
An outer conductive connecting cylinder portion coaxially provided on the inner conductor portion and having an outer connecting end portion electrically connected to the outer conductive portion.
It is provided with an outer insulating cylinder portion that is interposed between the inner conductor portion and the outer conductive connecting cylinder portion to electrically insulate them, and has an outer insulating end portion arranged on the outer periphery of the terminal side insulating portion. Superconducting cable connection structure. 前記雄型部材の内側導電キャップ部と、前記雌型部材の内側導体部及び前記外側導電接続筒部とは、前記冷媒が流入される冷媒孔を備え、
前記外側導電接続筒部の冷媒孔から、前記雄型部材の端末側絶縁部と前記雌型部材の外側絶縁筒部との間の空間及び前記内側導電キャップ部と前記内側導体部のケーブル側凹部を形成する内壁との間の空間を経て、前記内側導電キャップ部の冷媒孔及び前記内側導体部の冷媒孔に連続する冷媒流路を備える請求項１に記載の超電導ケーブルの接続構造。 The inner conductive cap portion of the male member, the inner conductor portion of the female member, and the outer conductive connecting cylinder portion are provided with refrigerant holes into which the refrigerant flows.
From the refrigerant hole of the outer conductive connection cylinder portion, the space between the terminal side insulating portion of the male member and the outer insulating cylinder portion of the female member, and the cable side recess of the inner conductive cap portion and the inner conductor portion. The connection structure for a superconducting cable according to claim 1, further comprising a refrigerant flow path that is continuous with a refrigerant hole of the inner conductive cap portion and a refrigerant hole of the inner conductor portion through a space between the inner wall and the inner wall. 前記雄型部材の内側導電キャップ部と前記雌型部材の内側導体部との組、及び前記雄型部材の外側導電部と前記雌型部材の外側導電接続筒部との組の少なくとも一方の組に、前記雌型部材に対して前記雄型部材を着脱自在とする機械的接続部を備える請求項１又は請求項２に記載の超電導ケーブルの接続構造。 At least one set of the inner conductive cap portion of the male member and the inner conductor portion of the female member, and the outer conductive portion of the male member and the outer conductive connecting cylinder portion of the female member. The superconducting cable connection structure according to claim 1 or 2, further comprising a mechanical connection portion for attaching and detaching the male member to the female member. 前記機械的接続部とは独立した電気的接続部を備える請求項３に記載の超電導ケーブルの接続構造。 The connection structure of a superconducting cable according to claim 3, further comprising an electrical connection portion independent of the mechanical connection portion. 超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルの端部に取り付けられて、前記超電導ケーブルの接続対象との接続に用いられる超電導ケーブル用接続部材であって、
段剥ぎされた前記ケーブルコアの端部において、前記超電導導体層の端部が挿入される導体挿入部を備え、前記超電導導体層に電気的に接続される内側導電キャップ部と、
前記外側導電層の端部に電気的に接続される外側導電部と、
前記内側導電キャップ部と前記外側導電部とを電気的に絶縁した状態で接続し、前記電気絶縁層の外周に配置される端末側絶縁部とを備える超電導ケーブル用接続部材。 A cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a heat insulating tube containing the cable core and being filled with a refrigerant are attached to the end of the superconducting cable to connect the superconducting cable. A connecting member for superconducting cables used to connect to a target.
An inner conductive cap portion that includes a conductor insertion portion into which the end portion of the superconducting conductor layer is inserted at the end portion of the cable core that has been stripped off and is electrically connected to the superconducting conductor layer.
An outer conductive portion that is electrically connected to the end of the outer conductive layer,
A connecting member for a superconducting cable, which connects the inner conductive cap portion and the outer conductive portion in an electrically insulated state, and includes a terminal-side insulating portion arranged on the outer periphery of the electrically insulating layer. 超電導導体層と電気絶縁層と外側導電層とを備えるケーブルコアと、前記ケーブルコアを収納し、冷媒が充填される断熱管とを備える超電導ケーブルと接続対象との間に介在されて、両者の接続に用いられる超電導ケーブル用接続部材であって、
段剥ぎされた前記ケーブルコアの端部が挿入されるケーブル側凹部と、前記超電導ケーブルの接続対象が挿入される相手側凹部とを備え、更に、
前記ケーブル側凹部の一部を構成し、前記超電導導体層の端部が挿入される導体凹部を備え、前記超電導導体層と電気的に接続される内側導体部と、
前記内側導体部に同軸に設けられ、前記外側導電層に電気的に接続される外側接続端部を備える外側導電接続筒部と、
前記内側導体部と前記外側導電接続筒部との間に介在されて両者を電気的に絶縁し、前記電気絶縁層の外周に配置される外側絶縁端部を備える外側絶縁筒部とを備える超電導ケーブル用接続部材。 A cable core having a superconducting conductor layer, an electrically insulating layer, and an outer conductive layer, and a superconducting cable including a heat insulating tube containing the cable core and filled with a refrigerant are interposed between the connection target and both. A connecting member for superconducting cables used for connection.
It is provided with a cable-side recess into which the end of the cable core that has been stripped off is inserted, and a mating recess into which the connection target of the superconducting cable is inserted.
An inner conductor portion that forms a part of the cable-side recess, includes a conductor recess into which the end portion of the superconducting conductor layer is inserted, and is electrically connected to the superconducting conductor layer.
An outer conductive connecting cylinder portion coaxially provided on the inner conductor portion and having an outer connecting end portion electrically connected to the outer conductive layer.
Superconducting with an outer insulating cylinder portion that is interposed between the inner conductor portion and the outer conductive connecting cylinder portion to electrically insulate them and has an outer insulating end portion arranged on the outer periphery of the electrically insulating layer. Cable connection member. 前記外側導電接続筒部の外周に設けられる断熱部を備える請求項６に記載の超電導ケーブル用接続部材。 The connection member for a superconducting cable according to claim 6, further comprising a heat insulating portion provided on the outer periphery of the outer conductive connection cylinder portion.
JP2017029357A 2017-02-20 2017-02-20 Connection structure of superconducting cable and connection member for superconducting cable Active JP6802084B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017029357A JP6802084B2 (en) 2017-02-20 2017-02-20 Connection structure of superconducting cable and connection member for superconducting cable

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017029357A JP6802084B2 (en) 2017-02-20 2017-02-20 Connection structure of superconducting cable and connection member for superconducting cable

Publications (2)

Publication Number Publication Date
JP2018137070A JP2018137070A (en) 2018-08-30
JP6802084B2 true JP6802084B2 (en) 2020-12-16

Family

ID=63366069

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017029357A Active JP6802084B2 (en) 2017-02-20 2017-02-20 Connection structure of superconducting cable and connection member for superconducting cable

Country Status (1)

Country Link
JP (1) JP6802084B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113363891B (en) * 2021-06-07 2022-08-30 深圳市深电电力设备发展有限公司 Manufacturing method of cable first-aid repair quick connector
CN118073017A (en) * 2024-04-25 2024-05-24 四川九洲线缆有限责任公司 High-power liquid cooling cable

Also Published As

Publication number Publication date
JP2018137070A (en) 2018-08-30

Similar Documents

Publication Publication Date Title
EP1732190B1 (en) Terminal structure of multiphase superconducting cable
CN101546872B (en) Device for connecting two superconducting cables
US7719130B2 (en) Power cable line
US9306382B2 (en) Joints for high voltage cables insulated with impregnated paper or paper-polypropylene laminate (PPL)
US20020084094A1 (en) High voltage cable termination
JP2005251570A (en) Intermediate connection part of superconducting cable
JP6791782B2 (en) Terminal structure of superconducting equipment
JP6802084B2 (en) Connection structure of superconducting cable and connection member for superconducting cable
KR101823814B1 (en) Joint part for superconducting cable and joint structure for superconducting cable
US7439448B2 (en) Phase split structure of multiphase superconducting cable
CN205070381U (en) Insulating terminal subassembly
WO2021165744A1 (en) Devices and methods for electrical cable splices
JP2008226624A (en) Superconducting cable and connecting part of superconducting cable
JP5067725B2 (en) Superconducting cable terminal connection structure
JP2010020968A (en) Connecting method of former for superconductive cable, and connection structure of former for superconductive cable
JPH06325648A (en) Insulator wire built-in optical fiber
JP2019193515A (en) Cable connection part
EP3934039A1 (en) Conductor connector and cable joint system
JP5348511B2 (en) Superconducting cable and superconducting cable connection
US1652893A (en) High-potential cable joint and method of installation
SE2350308A1 (en) A dc power transmission arrangement, a method of forming a dc power transmission arrangement and a method of reconfiguring a dc power transmission arrangement
JP5704683B2 (en) Power cable connection
US1698051A (en) Joint for high-tension electric cables
JP2007258192A (en) Intermediate connection part of superconductive cable
GB369772A (en) Improvements in and relating to electrical cable installations

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20200121

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20201105

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20201117

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20201126

R150 Certificate of patent or registration of utility model

Ref document number: 6802084

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150