JPH0562832A - Superconducting magnet - Google Patents
Superconducting magnetInfo
- Publication number
- JPH0562832A JPH0562832A JP25304491A JP25304491A JPH0562832A JP H0562832 A JPH0562832 A JP H0562832A JP 25304491 A JP25304491 A JP 25304491A JP 25304491 A JP25304491 A JP 25304491A JP H0562832 A JPH0562832 A JP H0562832A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- superconducting wire
- impregnated paper
- impregnated
- superconducting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims abstract description 14
- 239000004519 grease Substances 0.000 claims abstract description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 10
- 239000010703 silicon Substances 0.000 claims abstract description 10
- 230000001070 adhesive effect Effects 0.000 claims abstract description 5
- 239000000853 adhesive Substances 0.000 claims abstract 2
- 239000002657 fibrous material Substances 0.000 claims description 4
- 238000010791 quenching Methods 0.000 abstract description 14
- 238000004804 winding Methods 0.000 description 7
- 230000006835 compression Effects 0.000 description 4
- 238000007906 compression Methods 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 3
- 239000001307 helium Substances 0.000 description 3
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000835 fiber Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229920002379 silicone rubber Polymers 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000004945 silicone rubber Substances 0.000 description 1
Landscapes
- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
(57)【要約】
【目的】 本発明は、ソレノイドコイル状の超電導磁石
において、当該クエンチ現象の発生を抑えるような対策
を施した超電導磁石を提供するものである
【構成】 超電導線材製コイル３の最内層及び最外層
に、それぞれシリコングリスのような接着性の無い含浸
用材料を含浸させた内側含浸紙２及び外側含浸紙５を介
在させると共に、当該超電導線材製コイル３にはシリコ
ングリスのような含浸用材料を含浸させ、更に、外側含
浸紙５の外面に補強層６を設けてある。
(57) [Summary] [Object] The present invention provides a superconducting magnet in the form of a solenoid coil, in which measures are taken to suppress the occurrence of the quench phenomenon. [Configuration] Superconducting wire coil 3 An inner impregnated paper 2 and an outer impregnated paper 5 each impregnated with a non-adhesive impregnating material such as silicon grease are interposed in the innermost layer and the outermost layer, and the superconducting wire coil 3 is made of silicon grease. Such an impregnating material is impregnated, and a reinforcing layer 6 is provided on the outer surface of the outer impregnated paper 5.
Description
【０００１】[0001]
【産業上の利用分野】超電導磁石の問題点の一つにクエ
ンチ現象が挙げられる。これは超電導状態で使用されて
いた磁石が、突然、超電導状態を保てなくなり、常電導
状態となって使用不能となる現象である。 本発明は、
ソレノイドコイル状の超電導磁石において、当該クエン
チ現象の発生を抑えるような対策を施した超電導磁石を
提供するものである。[Industrial application] One of the problems of superconducting magnets is the quench phenomenon. This is a phenomenon in which a magnet used in a superconducting state suddenly loses its superconducting state, becomes a normal conducting state, and becomes unusable. The present invention is
It is intended to provide a superconducting magnet in the form of a solenoid coil, in which measures are taken to suppress the occurrence of the quench phenomenon.
【０００２】[0002]
【従来の技術】従来の超電導磁石は、図３に示すよう
に、コイルの巻枠Ａに超電導線材製コイルＢを巻付ける
と共に、当該コイルＢ間にシリコンゴムやシリコングリ
スのような接着性の無い含浸用材料Ｃを含浸させ、更
に、当該超電導線材製コイルＢの半径方向外側に働く電
磁力ａに耐え得る強度を具えた補強層Ｄを、コイルの最
外層部に設けるように構成したものである。2. Description of the Related Art In a conventional superconducting magnet, as shown in FIG. 3, a coil B made of a superconducting wire is wound around a coil winding frame A, and an adhesive property such as silicon rubber or silicon grease is provided between the coils B. A structure in which an unimpregnated material C is impregnated, and a reinforcing layer D having a strength capable of withstanding the electromagnetic force a acting on the radial outside of the superconducting wire coil B is provided on the outermost layer of the coil. Is.
【０００３】ところで、超電導磁石に発生するクエンチ
現象の原因として、コイルＢを形成する超電導線の微少
な動きに基因するものがある。 これは超電導磁石の励
磁により、超電導線材製コイルＢに対し、半径方向外側
に働く電磁力ａと、軸方向圧縮側に働く電磁力ｂとが作
用するため、当該コイルＢを構成する線材間に間隙があ
ると、線材の微少変位となり、クエンチ現象を生じてし
まう。By the way, as a cause of the quench phenomenon occurring in the superconducting magnet, there is a cause due to a minute movement of the superconducting wire forming the coil B. This is because when a superconducting magnet is excited, an electromagnetic force a acting radially outward and an electromagnetic force b acting on the axial compression side act on the coil B made of a superconducting wire, so that between the wire rods forming the coil B. If there is a gap, the wire will be slightly displaced and a quench phenomenon will occur.
【０００４】従って、これの対策として従来は、前記し
た含浸用材料Ｃの含浸、並びに、補強層Ｄの形成（一般
には、金属製のテープや線材をコイルＢの外装に巻き付
けて形成する。）に基づき、線材の微少変位を防止し、
依って、クエンチ現象の発生阻止を図っている。Therefore, as a countermeasure against this, conventionally, the impregnation of the above-mentioned impregnating material C and the formation of the reinforcing layer D (generally, a metal tape or wire is wound around the exterior of the coil B). Based on the
Therefore, the quench phenomenon is prevented.
【０００５】[0005]
【発明が解決しようとする課題】超電導線材間に含浸材
料Ｃを保有するコイルＢは、その超電導線材の半径方向
外側に作用する電磁力ａと、軸方向圧縮側に作用する電
磁力ｂに対して、一体構造の作用を示す。 そのため、
電磁力に依る超電導線材製コイルＢの変形に依り、コイ
ルの最外層超電導線と補強層Ｄ間、及びコイルの最内層
超電導線とコイル巻枠Ａ間で、それぞれ滑りを生じ、こ
れに伴い発生する摩擦熱が、クエンチ現象の原因となっ
た。The coil B containing the impregnated material C between the superconducting wire rods has an electromagnetic force a acting on the radially outer side of the superconducting wire rod and an electromagnetic force b acting on the axial compression side. The operation of the integrated structure is shown. for that reason,
Due to the deformation of the coil B made of a superconducting wire due to electromagnetic force, slippage occurs between the outermost superconducting wire of the coil and the reinforcing layer D, and between the innermost superconducting wire of the coil and the coil winding A. The frictional heat generated caused the quenching phenomenon.
【０００６】更に、コイルＢの外面は線材の凹凸があ
り、補強層Ｄを形成する金属製テープとの接触は、点接
触若しくは線接触であるため、コイルＢの変形に伴い、
補強層Ｄとコイル外面とは滑りが生じ易くなる。 一
方、コイルＢの外面の凹凸に依り、補強層Ｄから加えら
れる圧縮力は、超電導線に対し不均一な状態で加わるた
め、コイル変形時に超電導線の微少変位を引き起こし易
いと言う問題が、必然伴うこととなる。Further, since the outer surface of the coil B has irregularities of the wire and the contact with the metal tape forming the reinforcing layer D is point contact or line contact, the coil B is deformed,
Sliding easily occurs between the reinforcing layer D and the outer surface of the coil. On the other hand, due to the unevenness of the outer surface of the coil B, the compressive force applied from the reinforcing layer D is applied to the superconducting wire in a non-uniform state, so that the problem that the minute displacement of the superconducting wire is likely to occur when the coil is deformed is inevitable. It will be accompanied.
【０００７】本発明は、上記したような従来に於ける問
題点を解消し、超電導線材製コイルの変形時に、巻枠及
び補強層間の滑りに依るクエンチ現象の発生を阻止する
ことが出来るようにした超電導磁石を提供するものであ
る。The present invention solves the above problems in the prior art and prevents the occurrence of the quench phenomenon due to the slip between the winding frame and the reinforcing layer when the coil made of the superconducting wire is deformed. The present invention provides a superconducting magnet.
【０００８】[0008]
【課題を解決するための手段】本発明は、超電導線材製
コイルの最内層及び最外層に、当該コイルを固定するた
めの繊維状材料を介在させ、これに依りコイルとコイル
巻枠間、並びにコイル外層と補強層間の、相対的滑りの
発生の防止、すなわち、クエンチ現象の発生原因の排除
を図るようにしたものである。DISCLOSURE OF THE INVENTION According to the present invention, a fibrous material for fixing the coil is interposed between the innermost layer and the outermost layer of the coil made of a superconducting wire, whereby the coil and the coil winding frame, and This is intended to prevent relative slippage between the coil outer layer and the reinforcing layer, that is, to eliminate the cause of the quench phenomenon.
【０００９】[0009]
【実施例】図１及び図２は本発明に係るソレノイドコイ
ル状の超電導磁石を示したものである。 同図におい
て、１はコイルの巻枠であって、その芯軸１ａの外周に
は、シリコングリス等を含浸した内側含浸紙２を巻着し
てある。 尚、当該内側含浸紙２の厚さは、0.2mm程度
である。1 and 2 show a solenoid coil-shaped superconducting magnet according to the present invention. In the figure, reference numeral 1 is a coil winding frame, and an inner impregnated paper 2 impregnated with silicon grease or the like is wound around the outer periphery of a core shaft 1a. The inner impregnated paper 2 has a thickness of about 0.2 mm.
【００１０】３は超電導線材製コイルであって、上記し
た内側含浸紙２の外面に巻回してある。そして、当該コ
イル３間にシリコングリスのような接着性の無い含浸用
材料４を含浸させてある。A superconducting wire coil 3 is wound around the outer surface of the inner impregnated paper 2 described above. The coil 3 is impregnated with an impregnating material 4 having no adhesive property, such as silicon grease.
【００１１】５は超電導線材製コイル３の最外層に巻着
した外側含浸紙であって、シリコングリス等が含浸され
ている。 尚、当該外側含浸紙５の厚さは、0.2mm程度
である。An outer impregnated paper 5 is wound around the outermost layer of the superconducting wire coil 3 and is impregnated with silicon grease or the like. The thickness of the outer impregnated paper 5 is about 0.2 mm.
【００１２】６は上記外側含浸紙５の外面に設けた補強
層であって、当該補強層６はステンレス製の0.2mm（厚
さ）×5mm（幅）程度のテープを三層に巻いて形成した
ものである。Reference numeral 6 denotes a reinforcing layer provided on the outer surface of the outer impregnated paper 5. The reinforcing layer 6 is formed by winding stainless steel tape of about 0.2 mm (thickness) × 5 mm (width) in three layers. It was done.
【００１３】常温で補強層６に依り締め付けられた外側
含浸紙５は、コイル３における外層側の超電導線に食い
込み、従って、外側含浸紙５と当該外層側の超電導線と
は、面接触ｍの状態となる。 この状態で液体ヘリウム
温度（4.2Ｋ ）まで冷却された外側含浸紙５は、超電導
線に対し面接触ｍとなった補強層６とは、合体化したも
のとみなされる。但し、当該含浸紙５を合体化した補強
層の強度は、含浸紙５の材質と、含浸しているシリコン
グリスの強度に基づき決定されるものであり、その外側
にある補強層６を形成しているステンレステープや超電
導線の強度より低くなる。The outer impregnated paper 5 clamped by the reinforcing layer 6 at room temperature bites into the superconducting wire on the outer layer side of the coil 3, and therefore, the outer impregnated paper 5 and the superconducting wire on the outer layer side have a surface contact m. It becomes a state. In this state, the outer impregnated paper 5 cooled to the liquid helium temperature (4.2 K) is considered to have been united with the reinforcing layer 6 which is in surface contact m with the superconducting wire. However, the strength of the reinforcing layer obtained by uniting the impregnated paper 5 is determined based on the material of the impregnated paper 5 and the strength of the impregnated silicon grease, and the reinforcing layer 6 on the outside is formed. The strength is lower than the strength of stainless steel tape and superconducting wire.
【００１４】図２の状態でコイル３に軸方向圧縮の電磁
力が作用した時、コイル３の外層側超電導線は、シリコ
ングリスを保持した含浸紙に依り支えられる。 更に、
軸方向圧縮の電磁力ｂが増加した場合には、含浸紙５の
繊維構造が破壊することで、コイル３の外面と補強層６
間の滑りに作用する力を分散する。When an electromagnetic force of axial compression acts on the coil 3 in the state of FIG. 2, the outer superconducting wire of the coil 3 is supported by the impregnated paper holding silicon grease. Furthermore,
When the electromagnetic force b for axial compression is increased, the fiber structure of the impregnated paper 5 is destroyed, so that the outer surface of the coil 3 and the reinforcing layer 6 are broken.
Disperses the force acting on the slip between.
【００１５】コイル３の内層側と巻枠１の芯軸１ａ間に
ある内側含浸紙２の効果であるが、これは、上記した外
側含浸紙５の場合と全く同様であるので、これに対する
説明は省略する。The effect of the inner impregnated paper 2 between the inner layer side of the coil 3 and the core shaft 1a of the bobbin 1 is the same as the case of the outer impregnated paper 5 described above, and the description thereof will be given. Is omitted.
【００１６】本発明に用いる内側含浸紙２及び外側含浸
紙５は、繊維状材料で製するものであるが、主として紙
または布材を用いるが、これ以外に、不織布、ガラス繊
維、ステンレス繊維、ナイロン繊維等でも良く、これら
から必要とする強度のものを選択することができる。The inner impregnated paper 2 and the outer impregnated paper 5 used in the present invention are made of fibrous material, and mainly paper or cloth material is used. In addition to this, non-woven fabric, glass fiber, stainless fiber, Nylon fiber or the like may be used, and the one having the required strength can be selected from these.
【００１７】内側含浸紙２及び外側含浸紙５に含浸させ
る材料、並びに含浸用材料４であるが、これは既述した
シリコングリス以外、シリコンゴム、パラフィン等があ
げられるが、接着性がない材料であることが絶対的条件
である。The material for impregnating the inner impregnated paper 2 and the outer impregnated paper 5 and the impregnating material 4 include silicone rubber, paraffin, etc. in addition to the above-mentioned silicone grease, but a material having no adhesive property. Is an absolute requirement.
【００１８】[0018]
【発明の効果】本発明は、ソレノイドコイル状の超電導
磁石において、超電導線材製コイルの最内層及び最外層
に、当該コイルを固定するための繊維状材料を介在させ
るように構成したから、コイルとコイル巻枠間、並びに
外層補強層間の相対的滑り発生、すなわち、クエンチ現
象の発生原因の排除が図られる。INDUSTRIAL APPLICABILITY According to the present invention, in a solenoid coil-shaped superconducting magnet, a fibrous material for fixing the coil is formed in the innermost layer and the outermost layer of the coil made of a superconducting wire. Relative slippage between the coil winding frames and between the outer reinforcing layers, that is, the cause of the quench phenomenon is eliminated.
【００１９】超電導磁石が通常発揮する電流−磁場特性
は、その磁石を形成する超電導線が本来的に保有する電
流−磁場特性の７０％程度である。 超電導磁石の当該
特性を向上させるためには、クエンチ現象を何回も繰返
し、所謂磁石のトレーニングに依り、超電導磁石の電流
−磁場特性を、その超電導線が保有する特性の９０％近
くまであげるものである。 ところが、本発明に基づく
超電導磁石は、クエンチ現象を起こすこと無く、当該超
電導線の保有する電流−磁場特性の９０％まであげるこ
とができる。The current-magnetic field characteristic normally exhibited by the superconducting magnet is about 70% of the current-magnetic field characteristic originally possessed by the superconducting wire forming the magnet. In order to improve the characteristic of the superconducting magnet, the quench phenomenon is repeated many times, and the current-magnetic field characteristic of the superconducting magnet is increased to nearly 90% of the characteristic possessed by the superconducting wire by so-called magnet training. Is. However, the superconducting magnet according to the present invention can raise the current-magnetic field characteristic of the superconducting wire up to 90% without causing the quench phenomenon.
【００２０】また、本発明に依れば、クエンチ現象に依
り引き起こされる高電圧が原因となる、超電導線間の絶
縁不良をはじめ、保護抵抗等付属品の損傷が良く回避さ
れることとなる。 更に、クエンチ現象に基づく液体ヘ
リウムの爆発性損失が無くなり、液体ヘリウムの消費量
を減少させることができる。Further, according to the present invention, damages to accessories such as protection resistors, including insulation failure between superconducting wires, which is caused by high voltage caused by the quench phenomenon, can be avoided well. Furthermore, the explosive loss of liquid helium due to the quench phenomenon is eliminated, and the consumption of liquid helium can be reduced.
【図１】本発明に係る超電導磁石の中央縦断面図であ
る。FIG. 1 is a central longitudinal sectional view of a superconducting magnet according to the present invention.
【図２】図１に於けるＸ部分の拡大断面図である。FIG. 2 is an enlarged sectional view of an X portion in FIG.
【図３】従来の超電導磁石を示す中央縦断面図である。FIG. 3 is a central longitudinal sectional view showing a conventional superconducting magnet.
１ コイルの巻枠 １ａ 芯軸 ２ 内側含浸紙 ３ 超電導線材製コイル ４ 含浸用材料 ５ 外側含浸紙 ６ 補強層 ｍ 面接触 1 coil reel 1a core shaft 2 inner impregnated paper 3 superconducting wire coil 4 impregnating material 5 outer impregnated paper 6 reinforcing layer m surface contact
Claims (2)
て、超電導線材製コイルの最内層及び最外層に、当該コ
イルを固定するための繊維状材料を介在させたことを特
徴とする超電導磁石。1. A superconducting magnet in the form of a solenoid coil, characterized in that a fibrous material for fixing the coil is interposed between the innermost layer and the outermost layer of the coil made of a superconducting wire.
最外層に、それぞれシリコングリスのような接着性の無
い含浸用材料を含浸させた内側含浸紙（２）及び外側含
浸紙（５）を介在させると共に、当該超電導線材製コイ
ル（３）にはシリコングリスのような含浸用材料を含浸
させ、更に、外側含浸紙（５）の外面に補強層（６）を
設けたことを特徴とする請求項１に記載の超電導磁石。2. An inner impregnated paper (2) and an outer impregnated paper (5), wherein the innermost layer and the outermost layer of the superconducting wire coil (3) are impregnated with a non-adhesive impregnating material such as silicon grease, respectively. In addition, the superconducting wire coil (3) is impregnated with an impregnating material such as silicon grease, and a reinforcing layer (6) is further provided on the outer surface of the outer impregnated paper (5). The superconducting magnet according to claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25304491A JPH0562832A (en) | 1991-09-04 | 1991-09-04 | Superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25304491A JPH0562832A (en) | 1991-09-04 | 1991-09-04 | Superconducting magnet |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0562832A true JPH0562832A (en) | 1993-03-12 |
Family
ID=17245704
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25304491A Pending JPH0562832A (en) | 1991-09-04 | 1991-09-04 | Superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0562832A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100355859B1 (en) * | 2000-12-12 | 2002-10-12 | 한국전기연구원 | High Temperature Superconducting Magnet |
| JP2013247291A (en) * | 2012-05-28 | 2013-12-09 | Chubu Electric Power Co Inc | Superconducting coil device |
-
1991
- 1991-09-04 JP JP25304491A patent/JPH0562832A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100355859B1 (en) * | 2000-12-12 | 2002-10-12 | 한국전기연구원 | High Temperature Superconducting Magnet |
| JP2013247291A (en) * | 2012-05-28 | 2013-12-09 | Chubu Electric Power Co Inc | Superconducting coil device |
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