JP2021515414A - Liquid helium immersion type low temperature superconducting member for large current high temperature superconducting current lead - Google Patents
Liquid helium immersion type low temperature superconducting member for large current high temperature superconducting current lead Download PDFInfo
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- 239000007788 liquid Substances 0.000 title claims abstract description 24
- 239000001307 helium Substances 0.000 title claims abstract description 14
- 229910052734 helium Inorganic materials 0.000 title claims abstract description 14
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 title claims abstract description 14
- 238000007654 immersion Methods 0.000 title claims abstract description 6
- 241000271510 Agkistrodon contortrix Species 0.000 claims abstract description 36
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 16
- 239000010935 stainless steel Substances 0.000 claims abstract description 16
- 238000005498 polishing Methods 0.000 claims description 4
- 230000007704 transition Effects 0.000 claims description 4
- 229910002695 AgAu Inorganic materials 0.000 claims description 3
- 230000013011 mating Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000012545 processing Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 abstract description 2
- 239000000463 material Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000011900 installation process Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910021521 yttrium barium copper oxide Inorganic materials 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/06—Coils, e.g. winding, insulating, terminating or casing arrangements therefor
- H01F6/065—Feed-through bushings, terminals and joints
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- Containers, Films, And Cooling For Superconductive Devices (AREA)
Abstract
【課題】大電流高温超電導電流リード用の液体ヘリウム浸漬式低温超電導部材を公開する。【解決手段】低温超電導銅ヘッド（３）を備え、前記低温超電導銅ヘッド（３）の一方端の断面は円状であり、且つその円周面に係止溝（６）が配置され、前記係止溝（６）にそれぞれ低温超電導線（２）が係着され、且つ高温超電導スタック（１）によって圧入され、前記低温超電導銅ヘッド（３）の他方端の断面は正方形であり、その両側面に凹溝（７）が設けられ、前記低温超電導線（２）の延長部がそれぞれ凹溝（７）内に係着され、且つステンレススチールのカバー（４）によって圧着固定されて低温超電導継手部を構成する大電流高温超電導電流リード用の液体ヘリウム浸漬式低温超電導部材。本技術案は、構造設計が合理的であり、高温超電導部分の低温端、低温超電導部分と低温超電導継手部の３つの部分を一体的に整合して、接触抵抗を低下させるだけではなく、ユーザーによる加工や取り付けのプロセスを簡単化し、作動コストを節約し、高温超電導電流リードの作動安全を効果的に保証することができる。【選択図】図１PROBLEM TO BE SOLVED: To disclose a liquid helium immersion type low temperature superconducting member for a large current high temperature superconducting flow lead. SOLUTION: The low temperature superconducting copper head (3) is provided, the cross section of one end of the low temperature superconducting copper head (3) is circular, and a locking groove (6) is arranged on the circumferential surface thereof. A low-temperature superconducting wire (2) is engaged with each of the locking grooves (6) and is press-fitted by a high-temperature superconducting stack (1). A concave groove (7) is provided on the surface, and each extension of the low temperature superconducting wire (2) is engaged in the concave groove (7) and crimped and fixed by a stainless steel cover (4) to form a low temperature superconducting joint. A liquid helium-immersed low-temperature superconducting member for large-current high-temperature superconducting current leads that composes the part. In this technical proposal, the structural design is rational, and not only the low temperature end of the high temperature superconducting part, the low temperature superconducting part and the low temperature superconducting joint part are integrally aligned to reduce the contact resistance, but also the user. It can simplify the processing and mounting process, save the operating cost, and effectively guarantee the operating safety of the high-temperature superconducting current lead. [Selection diagram] Fig. 1
Description
本発明は、大型熱核融合装置又は他の大型電磁装置の超電導（超伝導とも呼ばれる）マグネットの給電フィーダの分野に関し、主に、大電流高温超電導電流リード用の液体ヘリウム浸漬式低温超電導部材に関する。 The present invention relates to the field of power feeding feeders for superconducting (also called superconducting) magnets of large thermonuclear fusion devices or other large electromagnetic devices, and mainly relates to liquid helium-immersed low-temperature superconducting members for high-current high-temperature superconducting current leads. ..
高温超電導電流リードは、室温電源と低温超電導マグネットとを接続して、室温から液体ヘリウムの温度領域へ移行させるための電気的接続装置である。超電導マグネットについては、常規の電流リードは、熱が低温システムへ漏洩する主な熱源である。Ｂｉ−２２２３及びＹＢＣＯ等の高温超電導材料は、液体窒素の温度領域において、ゼロ抵抗率及び低熱伝導率の特徴を有するため、高温超電導電流リードに適用されると、低温システムの約半分の冷熱消費を低減し、更に低温システムの建設投資及び作動費用を効果的に低減することができる。 The high-temperature superconducting current lead is an electrical connection device for connecting a room temperature power source and a low-temperature superconducting magnet to move from room temperature to the temperature range of liquid helium. For superconducting magnets, regular current leads are the main source of heat leakage to cold systems. High-temperature superconducting materials such as Bi-2223 and YBCO have the characteristics of zero resistivity and low thermal conductivity in the temperature range of liquid nitrogen, so when applied to high-temperature superconducting current leads, they consume about half the cold heat of low-temperature systems. It is possible to effectively reduce the construction investment and operating cost of the low temperature system.
電流リードは、超電導装置における肝心な部品の１つであり、超電導マグネットの安定した動作や低温システムのコストに対して、重要な意味を持つ。安定性、及び熱漏洩の最小化に対する追求は、常に電流リードの設計の主な目的である。 The current lead is one of the essential parts in the superconducting device, and has an important meaning for the stable operation of the superconducting magnet and the cost of the low temperature system. The pursuit of stability and minimization of heat leakage has always been the main goal of current reed design.
本申請の設計には、金属部分の材料、構造、接触抵抗、低温超電導材料の性能等の要素の間の結合や関連の特性を合わせて、構造をモジュール化して、プロセスを簡単にし、且つ取り付けしやすくする。その同時に、高温超電導部分の低温端と低温超電導部分とは一体として、液体ヘリウムに浸漬され、低温超電導部分全体が液体ヘリウムの環境で動作し、これにより、低温超電導部分の安定低温環境が効果的に保証され、システム構造が簡単化され、且つ高温超電導高温端の温度を安定して制御することができ、ユーザによる取り付けや運用メンテナンスも非常に便利である。 The design of this application combines the coupling and related properties between elements such as the material, structure, contact resistance of the metal part, and the performance of the cryogenic superconducting material to modularize the structure to simplify and install the process. Make it easier. At the same time, the low temperature end of the high temperature superconducting part and the low temperature superconducting part are immersed in liquid helium, and the entire low temperature superconducting part operates in the liquid helium environment, so that the stable low temperature environment of the low temperature superconducting part is effective. It is guaranteed that the system structure is simplified, the temperature at the high temperature superconducting high temperature end can be controlled stably, and the installation and operation maintenance by the user is very convenient.
本発明の目的は、従来の技術の欠点を改善するために、構造がモジュール化され、熱漏洩が低く、電流負荷能力が強く、安全性が高いこと等の特徴を有する大電流高温超電導電流リード用の液体ヘリウム浸漬式低温超電導部材を提供する。 An object of the present invention is a large-current high-temperature superconducting flow lead having features such as a modularized structure, low heat leakage, strong current load capacity, and high safety in order to improve the drawbacks of the prior art. To provide a liquid helium immersion type low temperature superconducting member for use.
本発明は、下記技術案で達成される。
低温超電導銅ヘッドを備え、前記低温超電導銅ヘッドの一方端の断面は円状であり、且つその円周面に係止溝が配置され、前記係止溝にそれぞれ低温超電導線が係着され、且つ高温超電導スタックによって圧入され、前記低温超電導銅ヘッドの他方端の断面は正方形であり、その両側面に凹溝が設けられ、前記低温超電導線の延長部がそれぞれ凹溝内に係着され、且つステンレススチールのカバーによって圧着固定されて低温超電導継手部を構成することを特徴とする大電流高温超電導電流リード用の液体ヘリウム浸漬式低温超電導部材を提供する。
The present invention is achieved by the following technical proposal.
A low-temperature superconducting copper head is provided, the cross section of one end of the low-temperature superconducting copper head is circular, and a locking groove is arranged on the circumferential surface thereof, and a low-temperature superconducting wire is entwined in each of the locking grooves. Further, it is press-fitted by the high-temperature superconducting stack, the cross section of the other end of the low-temperature superconducting copper head is square, concave grooves are provided on both side surfaces thereof, and the extension portions of the low-temperature superconducting wire are respectively engaged in the concave grooves. Further, the present invention provides a liquid helium immersion type low temperature superconducting member for a large current high temperature superconducting flow lead, which is crimp-fixed by a stainless steel cover to form a low temperature superconducting joint portion.
前記の低温超電導銅ヘッドの中部に、排気通孔が設けられる。 An exhaust through hole is provided in the middle of the low temperature superconducting copper head.
前記の低温超電導銅ヘッドの円状部分と正方形部分との間は円錐状部分によって移行し、且つ低温超電導線の移行部分は低温超電導銅ヘッドの真ん中のテーパ面に均一に配置して貼り合わせられる。 The circular portion and the square portion of the low-temperature superconducting copper head are transferred by a conical portion, and the transition portion of the low-temperature superconducting wire is uniformly arranged and bonded to the tapered surface in the center of the low-temperature superconducting copper head. ..
前記の低温超電導線は、研磨体によりプレス処理されて成形してから係止溝内に置かれ、前記高温超電導スタックは係止溝内に真空半田付けされる。 The low-temperature superconducting wire is pressed by a polishing body, molded, and then placed in a locking groove, and the high-temperature superconducting stack is vacuum-soldered in the locking groove.
前記の低温超電導銅ヘッドにおける断面が正方形である所在部分の両側面に、それぞれステンレススチールのカバーを係着するための位置限定段差が設けられ、前記位置限定段差はそれぞれ内部へ凹むように両端にあり、前記ステンレススチールのカバーに、位置限定段差に合わせたボスが設けられる。 Position-limited steps for engaging the stainless steel cover are provided on both side surfaces of the location portion of the low-temperature superconducting copper head having a square cross section, and the position-limited steps are provided at both ends so as to be recessed inward. Yes, the stainless steel cover is provided with a boss that matches the position-limited step.
前記のステンレススチールのカバーは、真空半田付けされ、またボルトによって圧着されるように、低温超電導銅ヘッドの両側の凹溝内に固定され、且つボルトは位置限定段差とボスとの合わせ箇所に取り付けられる。 The stainless steel cover is vacuum soldered and fixed in the recesses on both sides of the low temperature superconducting copper head so that it can be crimped with bolts, and the bolts are attached at the point where the position limiting step and the boss meet. Be done.
前記の低温超電導継手部の低温超電導銅ヘッドの外面は、銀メッキ処理される。 The outer surface of the low-temperature superconducting copper head of the low-temperature superconducting joint portion is silver-plated.
前記の高温超電導スタックは、多層のＢｉ−２２２３／ＡｇＡｕ超電導テープによって真空半田付けされる。 The high temperature superconducting stack is vacuum soldered by a multilayer Bi-2223 / AgAu superconducting tape.
上記解決策において、高温超電導部分の低温端、低温超電導部分と低温超電導継手部の３つの部分を一体的に整合して、接触抵抗を低下させるだけではなく、ユーザーによる加工や取り付けのプロセスを簡単化し、作動コストを節約し、高温超電導電流リードの作動安全を効果的に保証することができる。 In the above solution, not only the low temperature end of the high temperature superconducting part, the low temperature superconducting part and the low temperature superconducting joint part are integrally aligned to reduce the contact resistance, but also the processing and installation process by the user is simplified. It is possible to save the operating cost and effectively guarantee the operating safety of the high-temperature superconducting current lead.
高温超電導部分の低温端は高温超電導スタックであり、高低温超電導部材の中間で移行する低温超電導線は、研磨体によりプレス処理されて成形してから高温超電導スタックの下方の溝内に置かれ、高温超電導スタックと共に真空半田付けされ、接触抵抗を低下させ、プロセス過程を簡単化し、低温超電導部分は複数本の低温超電導線によって低温端銅ヘッドの両側の溝内に真空半田付けされ、またステンレススチール圧板によって圧着され、真空半田付けされ、またボルトによって圧着されるように接続されるので、取り付けを頑固にするだけではなく、接触抵抗を小さくし、ジュール熱を低下させることができる。低温超電導部材の末端の低温超電導継手部の銅表面は銀メッキ処理されており、電流リードと低温超電導マグネットとの接合に低接触抵抗の条件を提供する。 The low-temperature end of the high-temperature superconducting part is the high-temperature superconducting stack, and the low-temperature superconducting wire that shifts between the high- and low-temperature superconducting members is pressed and molded by a polishing body and then placed in the groove below the high-temperature superconducting stack. Vacuum soldered with high temperature superconducting stack to reduce contact resistance and simplify process process, low temperature superconducting part is vacuum soldered into grooves on both sides of low temperature end copper head by multiple low temperature superconducting wires, and stainless steel Since they are crimped by a pressure plate, vacuum soldered, and connected so as to be crimped by bolts, not only the mounting is stubborn, but also the contact resistance can be reduced and the Joule heat can be reduced. The copper surface of the cryogenic superconducting joint at the end of the cryogenic superconducting member is silver-plated to provide low contact resistance conditions for joining the current lead to the cryogenic superconducting magnet.
本発明のメリットは、下記の通りである。
本発明は、構造設計が合理的であり、高温超電導部分の低温端、低温超電導部分と低温超電導継手部の３つの部分を一体的に整合して、接触抵抗を低下させるだけではなく、ユーザーによる加工や取り付けのプロセスを簡単化し、作動コストを節約し、高温超電導電流リードの作動安全を効果的に保証することができる。
The merits of the present invention are as follows.
In the present invention, the structural design is rational, and not only the low temperature end of the high temperature superconducting portion, the low temperature superconducting portion and the low temperature superconducting joint portion are integrally aligned to reduce the contact resistance, but also by the user. It simplifies the processing and installation process, saves operating costs, and effectively guarantees the operational safety of high-temperature superconducting current leads.
図１〜図３を参照されたい。 See FIGS. 1 to 3.
低温超電導銅ヘッド３を備え、前記低温超電導銅ヘッド３の一方端の断面は円状であり、且つその円周面に係止溝６が配置され、前記係止溝６にそれぞれ低温超電導線２が係着され、且つ高温超電導スタック１によって圧入され、前記低温超電導銅ヘッド３の他方端の断面は正方形であり、その両側面に凹溝７が設けられ、前記低温超電導線２の延長部がそれぞれ凹溝７内に係着され、且つステンレススチールのカバー４によって圧着固定されて低温超電導継手部を構成する大電流高温超電導電流リード用の液体ヘリウム浸漬式低温超電導部材である。
A low-temperature
前記の低温超電導銅ヘッド３の中部に、排気通孔８が設けられる。
An exhaust through
前記の低温超電導銅ヘッド３の円状部分と正方形部分との間は円錐状部分によって移行し、且つ低温超電導線２の移行部分は低温超電導銅ヘッド３の真ん中のテーパ面に均一に配置して貼り合わせられる。
The circular portion and the square portion of the low-temperature
前記の低温超電導線２は、研磨体によりプレス処理されて成形してから係止溝６内に置かれ、前記高温超電導スタック１は係止溝６内に真空半田付けされる。
The low-temperature
前記の低温超電導銅ヘッド３における断面が正方形である所在部分の両側面に、それぞれステンレススチールのカバー４を係着するための位置限定段差９が設けられ、前記位置限定段差９はそれぞれ内部へ凹むように両端にあり、前記ステンレススチールのカバー４、に位置限定段差９に合わせたボス１０が設けられる。
Position-
前記のステンレススチールのカバー４は、真空半田付けされ、またボルト５によって圧着されるように、低温超電導銅ヘッド３の両側の凹溝７内に固定され、且つボルト５は位置限定段差９とボス１０との合わせ箇所に取り付けられる。
The
前記の低温超電導継手部の低温超電導銅ヘッド３の外面は、銀メッキ処理される。
The outer surface of the low-temperature superconducting
前記の高温超電導スタック１は、多層のＢｉ−２２２３／ＡｇＡｕ超電導テープによって真空半田付けされる。
The high
具体的に使用する場合の過程としては、低温超電導銅ヘッド３の末端の正方形断面領域の銅面と被接続低温超電導継手部とを接合した後で、この領域を液体ヘリウムに垂直に浸漬し、液面を低温超電導銅ヘッド３の円状部分と正方形部分との間の円錐形移行部分の中間位置にして、使被ステンレススチールのカバー４によって凹溝７内に係着される低温超電導線２の延長部を液体ヘリウムに浸漬する状態にする。低温超電導銅ヘッド３の中部の排気通孔８によりも、蒸発した冷たいヘリウムガスが低温超電導銅ヘッド３の円状断面領域の内部へ流通すると共に、低温超電導銅ヘッド３の円状断面領域の外側の高温超電導スタック１も蒸発した冷液ヘリウムの環境にある。
As a specific process, after joining the copper surface of the square cross section region at the end of the low temperature superconducting
上記は単に本発明の設計の好適な実施例であるが、本発明の設計を限定するためのものではない。本発明の設計の精神や原則で加えた如何なる修正や均等な交換、改善等も、本発明の設計の保護範囲内に属する。 The above is merely a preferred embodiment of the design of the present invention, but is not intended to limit the design of the present invention. Any modifications, equal replacements, improvements, etc. made in the spirit or principle of the design of the present invention fall within the scope of protection of the design of the present invention.
１ 高温超電導スタック
２ 低温超電導線
３ 低温超電導銅ヘッド
４ ステンレススチールのカバー
５ ボルト
６ 係止溝
７ 凹溝
８ 排気通孔
９ 位置限定段差
１０ ボス
1 Cryogenic
Claims (8)
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811120754.5A CN109285647B (en) | 2018-09-26 | 2018-09-26 | liquid helium soaking type low-temperature superconducting assembly for large-current high-temperature superconducting current lead |
| CN201811120754.5 | 2018-09-26 | ||
| PCT/CN2019/105982 WO2020063385A1 (en) | 2018-09-26 | 2019-09-16 | Liquid helium immersion type low-temperature superconducting component for high-current and high-temperature superconducting current lead |
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| CN109285647B (en) * | 2018-09-26 | 2019-12-17 | 中国科学院合肥物质科学研究院 | liquid helium soaking type low-temperature superconducting assembly for large-current high-temperature superconducting current lead |
| CN111584180B (en) * | 2020-06-05 | 2021-12-28 | 中国科学院合肥物质科学研究院 | Low-stress safe transmission device between rapid excitation superconducting magnet and current lead |
| CN112038035B (en) * | 2020-09-18 | 2022-03-25 | 中国科学院合肥物质科学研究院 | Close-wound superconducting magnet refrigerating device based on interlayer lamination integral heat conduction |
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| WO2020063385A1 (en) | 2020-04-02 |
| CN109285647B (en) | 2019-12-17 |
| CN109285647A (en) | 2019-01-29 |
| JP6860753B1 (en) | 2021-04-21 |
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