JP3356320B2 - Superconducting magnet - Google Patents
Superconducting magnetInfo
- Publication number
- JP3356320B2 JP3356320B2 JP7199393A JP7199393A JP3356320B2 JP 3356320 B2 JP3356320 B2 JP 3356320B2 JP 7199393 A JP7199393 A JP 7199393A JP 7199393 A JP7199393 A JP 7199393A JP 3356320 B2 JP3356320 B2 JP 3356320B2
- Authority
- JP
- Japan
- Prior art keywords
- epoxy resin
- magnet
- superconducting magnet
- superconducting
- quench
- 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.)
- Expired - Fee Related
Links
- 239000003822 epoxy resin Substances 0.000 claims description 14
- 229920000647 polyepoxide Polymers 0.000 claims description 14
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 238000004804 winding Methods 0.000 claims description 4
- 238000010791 quenching Methods 0.000 description 7
- 238000012549 training Methods 0.000 description 4
- WSSSPWUEQFSQQG-UHFFFAOYSA-N 4-methyl-1-pentene Chemical compound CC(C)CC=C WSSSPWUEQFSQQG-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- MCMNRKCIXSYSNV-UHFFFAOYSA-N Zirconium dioxide Chemical compound O=[Zr]=O MCMNRKCIXSYSNV-UHFFFAOYSA-N 0.000 description 2
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- 229910003336 CuNi Inorganic materials 0.000 description 1
- 239000004593 Epoxy Substances 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 description 1
- 238000007654 immersion Methods 0.000 description 1
- 238000005470 impregnation Methods 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Reinforced Plastic Materials (AREA)
- Epoxy Resins (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、極低温の環境下で使用
される超電導マグネットに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting magnet used in a cryogenic environment.
【０００２】[0002]
【従来の技術】交流及び直流マグネットにおける最も重
要な課題はクエンチをいかに抑制するかということであ
る。そのためには線材の動きをいかに抑えるかというこ
とであるが従来のマグネットではａ：超電導線を巻回す
る時に引張応力をかけ摩擦力で固定するか、ｂ：エポキ
シ樹脂で含浸固定するものであり交流ではａが主体、直
流の場合はａとｂを並用するのが多い。マグネットのク
エンチを誘起する要因は、複雑多岐になるが、その多く
の部分は超電導線に含浸するエポキシ樹脂の物性に起因
するものが多い。BACKGROUND OF THE INVENTION The most important issue in AC and DC magnets is how to suppress quench. For that purpose, how to suppress the movement of the wire rod is known. In the conventional magnet, a: a superconducting wire is wound and fixed by frictional force by applying a tensile stress when wound, or b: an impregnated and fixed by epoxy resin. In the case of alternating current, a is mainly used, and in the case of direct current, a and b are commonly used. The factors that induce the quench of the magnet are complex and diverse, but many of them are due to the physical properties of the epoxy resin impregnating the superconducting wire.
【０００３】[0003]
【発明が解決しようとする課題】マグネットのクエンチ
特性に重大に関係しているエポキシ樹脂と超電導線との
関係を考えると超電導線とエポキシ樹脂の熱膨張率差に
基づいて、室温から極低温迄の冷却過程で樹脂又は界面
に内部応力が蓄積される。これに加えマグネットを励磁
すると、ローレンツカによる力が線材に働き、内部応力
は更に増すことになる。これらの内部応力が、超電導体
／エポキシ樹脂界面力又はエポキシ樹脂強度を上まわる
と界面又はエポキシ樹脂にクラツクが生ずることになり
これによって引き起される機械及び熱的撹乱によりマグ
ネットは不安定化しクエンチに至る。このマグネットの
不安定性は大型化にともなって大きな問題となる。本発
明は、以上のような点に鑑みてなされたものであり、そ
の目的とするところは、トレーニング効果が少なく、安
定した、耐クエンチ性の高い超電導マグネットを提供す
ることにある。Considering the relationship between the epoxy resin and the superconducting wire, which is critically related to the quench characteristics of the magnet, from room temperature to extremely low temperature based on the difference in thermal expansion coefficient between the superconducting wire and the epoxy resin. During the cooling process, internal stress is accumulated at the resin or at the interface. In addition to this, when the magnet is excited, the force of Lorentzka acts on the wire and the internal stress further increases. If these internal stresses exceed the superconductor / epoxy resin interfacial force or epoxy resin strength, cracks will occur at the interface or epoxy resin, causing mechanical and thermal disturbances that destabilize the magnet and quench. Leads to. This instability of the magnet becomes a big problem as the size increases. The present invention has been made in view of the above points, and an object of the present invention is to provide a stable, highly quench-resistant superconducting magnet having a small training effect.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成するため
に、本発明によれば超電導線を巻枠に巻回してなる超電
導マグネットにおいて巻線部が、ジアミノポリアルキレ
ングリコールを含むエポキシ樹脂で含浸されていること
を特徴とする超電導マグネットが提供される。In order to achieve the above object, according to the present invention, in a superconducting magnet formed by winding a superconducting wire around a bobbin, a winding portion is impregnated with an epoxy resin containing diaminopolyalkylene glycol. A superconducting magnet is provided.
【０００５】ここでいうジアミノポリアルキレングリコ
ールとはジアミノポリプロピレングリコール（ＤＡＰＰ
Ｇ）、ジアミノポリブテングリコール、ジアミノポリ−
４−メチル−１−ペンテングリコール等をいい、特にＤ
ＡＰＰＧよりなるエポキシ樹脂は、マイクロクラック耐
性に非常に優れていることが本発明者らによって明らか
となった。ＤＡＰＰＧとしては、重合度の異なるものを
２種以上混合して使用できるが、平均分子量が１７０〜
１１５０のものが好ましく、エポキシ樹脂としては特に
限定されないが、汎用のビスフェノールＡ型又はＦ型が
用いられる。またこのエポキシ樹脂中にアルミナ、ジル
コニア、シリカ、チタニア、炭酸カルシウム、マグネシ
ア、シリコンカーバイド、シリコンナイトラニド、カオ
リン等の無機粉末を添加して使用することもできる。The term “diaminopolyalkylene glycol” used herein refers to diaminopolypropylene glycol (DAPP)
G), diaminopolybutene glycol, diaminopoly-
4-methyl-1-pentene glycol, especially D
The present inventors have found that an epoxy resin composed of APPG is extremely excellent in microcrack resistance. As DAPPG, two or more kinds having different degrees of polymerization can be used as a mixture, but the average molecular weight is 170 to
1150 is preferred, and the epoxy resin is not particularly limited, but a general-purpose bisphenol A type or F type is used. In addition, an inorganic powder such as alumina, zirconia, silica, titania, calcium carbonate, magnesia, silicon carbide, silicon nitride, kaolin, or the like can be added to the epoxy resin.
【０００６】[0006]
【実施例】超電導線としてはＮｂＴｉ／ＣｕＮｉマトリ
ックス系にて１．２ｍｍφの超電導体を、テンション１
０ｋｇにて外径４５ｍｍ×長さ１００ｍｍの巻枠に１０
層ソレノイド状に巻回した。次にこれを、表１に示す各
種エポキシ樹脂を調製した後、この中にマグネットを３
０分間浸漬した後樹脂含浸した。これを８０°×１０mi
n 、１Torrで真空脱泡後所定条件で硬化した後クエンチ
特性を測定した。結果は繰返しのトレーニングにより到
達した最大電流密度とその時のトレーニング回数により
表１に示す。DESCRIPTION OF THE PREFERRED EMBODIMENTS As a superconducting wire, a superconductor having a diameter of 1.2 mm in an NbTi / CuNi matrix system was used.
At 0 kg, 10 on a reel with 45 mm outer diameter x 100 mm length
The layers were wound into solenoids. Next, after preparing various epoxy resins shown in Table 1, a magnet was placed in the epoxy resin.
After immersion for 0 minutes, resin impregnation was performed. This is 80 ° x 10mi
n After defoaming under vacuum at 1 Torr, and curing under predetermined conditions, the quench characteristics were measured. The results are shown in Table 1 according to the maximum current density reached by repeated training and the number of trainings at that time.
【０００７】[0007]
【表１】 [Table 1]
【０００８】[0008]
【発明の効果】本発明よりなる超電導マグネットはマイ
クロクラック耐性に優れるエポキシで超電導性が含浸固
定されているためコイルのクエンチ電流は増加し、トレ
ーニングも少なく安定するという優れた効果を有する。The superconducting magnet according to the present invention has an excellent effect that the quench current of the coil is increased and the training is small and stable because the superconductivity is impregnated and fixed with epoxy having excellent micro crack resistance.
Claims (1)
トにおいて巻線がジアミノポリアルキレングリコールを
含むエポキシ樹脂で含浸されていることを特徴とする超
電導マグネット。1. A superconducting magnet formed by winding a superconducting wire, wherein the winding is impregnated with an epoxy resin containing diaminopolyalkylene glycol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7199393A JP3356320B2 (en) | 1993-03-30 | 1993-03-30 | Superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7199393A JP3356320B2 (en) | 1993-03-30 | 1993-03-30 | Superconducting magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06283322A JPH06283322A (en) | 1994-10-07 |
| JP3356320B2 true JP3356320B2 (en) | 2002-12-16 |
Family
ID=13476510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7199393A Expired - Fee Related JP3356320B2 (en) | 1993-03-30 | 1993-03-30 | Superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3356320B2 (en) |
-
1993
- 1993-03-30 JP JP7199393A patent/JP3356320B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06283322A (en) | 1994-10-07 |
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