JPH08250324A - Superconducting magnet - Google Patents
Superconducting magnetInfo
- Publication number
- JPH08250324A JPH08250324A JP4962295A JP4962295A JPH08250324A JP H08250324 A JPH08250324 A JP H08250324A JP 4962295 A JP4962295 A JP 4962295A JP 4962295 A JP4962295 A JP 4962295A JP H08250324 A JPH08250324 A JP H08250324A
- Authority
- JP
- Japan
- Prior art keywords
- heat sink
- heat
- heat pipe
- plate
- superconducting magnet
- 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.)
- Granted
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に、渦電流による温
度上昇を抑えた超電導磁石に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a superconducting magnet which suppresses temperature rise due to eddy current.
【０００２】[0002]
【従来の技術】従来から、磁気浮上式鉄道に採用される
超電導磁石の内槽を収納する容器を構成する熱シールド
板には、冷却効果を上げるために、熱伝達率に優れたア
ルミニウム板が採用されていた。2. Description of the Related Art Conventionally, a heat shield plate, which constitutes a container for accommodating an inner tank of a superconducting magnet used in a magnetic levitation railway, is made of an aluminum plate having an excellent heat transfer coefficient in order to enhance a cooling effect. Was adopted.
【０００３】ところが、この容器では、超電導コイルで
発生した磁界によって、渦電流が流れるので、最近で
は、絶縁樹脂に強化繊維を混入した積層板を採用して渦
電流による温度上昇を防いでいる。さらに、この積層板
の熱伝導率の低下を補うために、この積層板に対して冷
却管を挿着する方法が試みられている。However, in this container, an eddy current flows due to the magnetic field generated by the superconducting coil. Therefore, recently, a laminated plate in which a reinforcing fiber is mixed with an insulating resin is used to prevent the temperature rise due to the eddy current. Further, in order to compensate for the decrease in the thermal conductivity of this laminated plate, a method of inserting a cooling pipe into this laminated plate has been attempted.
【０００４】図14は、従来の超電導磁石の内槽を収納す
る容器に採用された熱シールド板の一例を示す図であ
る。図14において、ガラス強化プラスチック（ＧＦＲ
Ｐ）材で製作された積層板31には、ヘアピン状に蛇行し
て折り曲げられた冷却管32が埋設されている。FIG. 14 is a view showing an example of a heat shield plate adopted in a container for accommodating an inner tank of a conventional superconducting magnet. In Figure 14, glass reinforced plastic (GFR
A cooling pipe 32 which is meandered and bent like a hairpin is embedded in a laminated plate 31 made of the material P).
【０００５】この冷却管32の両側に形成された曲線部
は、積層板31の両端に突き出ており、このうち、片側
は、詳細省略したヒートシンク33の内部に突き出てい
る。The curved portions formed on both sides of the cooling pipe 32 project from both ends of the laminated plate 31, and one of them projects into the inside of the heat sink 33, which is not described in detail.
【０００６】冷却管32の両端部は、別に設置された循環
ポンプ35に接続され、この冷却管32の内部の冷媒は、積
層板31とヒートシンク33の内部を蛇行し異なる方向交互
に貫流することで、積層板31を冷却する。Both ends of the cooling pipe 32 are connected to a separately installed circulation pump 35, and the refrigerant inside the cooling pipe 32 meanders inside the laminated plate 31 and the heat sink 33 to flow through alternately in different directions. Then, the laminated plate 31 is cooled.
【０００７】また、図15は、図14で示したヒートシンク
33の代りに、熱交換器34が冷却管32に直列に接続された
場合を示し、この例では、積層板31を冷却する冷媒は、
熱交換器34によって冷却された後、積層板31の内部の冷
却管32に循環ポンプ35で送り込まれる。FIG. 15 shows the heat sink shown in FIG.
Instead of 33, a case where the heat exchanger 34 is connected to the cooling pipe 32 in series is shown, and in this example, the refrigerant that cools the laminated plate 31 is
After being cooled by the heat exchanger 34, it is sent to the cooling pipe 32 inside the laminated plate 31 by the circulation pump 35.
【０００８】[0008]
【発明が解決しようとする課題】ところが、このように
構成された超電導磁石においては、冷却管32の内部の冷
媒を循環させるためには、循環ポンプ35が必要となるの
で、例えば、磁気浮上式鉄道に採用される超電導コイル
には、重量と占有空間の制約上採用できない。そこで、
本発明の目的は、重量や外形を増やすことなく、渦電流
も防ぐことのできる超電導磁石を得ることである。However, in the superconducting magnet configured as described above, the circulation pump 35 is required to circulate the refrigerant inside the cooling pipe 32. Therefore, for example, the magnetic levitation type Superconducting coils used in railways cannot be used due to weight and space constraints. Therefore,
An object of the present invention is to obtain a superconducting magnet which can prevent eddy currents without increasing weight and outer shape.
【０００９】[0009]
【課題を解決するための手段】請求項１に記載の発明の
超電導磁石は、超電導コイルが収納された内槽が内部に
収納される筒状のヒートシンクの両端の開口部に対し
て、無端状のヒートパイプの中間部が内部に貫挿された
絶縁板を取り付けたことを特徴とする。A superconducting magnet according to a first aspect of the present invention is endless with respect to openings at both ends of a cylindrical heat sink in which an inner tank accommodating a superconducting coil is accommodated. Is characterized in that an insulating plate having an intermediate portion of the heat pipe inserted therein is attached.
【００１０】また、請求項２に記載の発明の超電導磁石
は、超電導コイルが収納された内槽が内部に収納される
筒状のヒートシンクの両端の開口部に対して、無端状の
ヒートパイプの蛇行部の中間部が内部に埋設された絶縁
板を固定し、ヒートパイプの蛇行部の端部をヒートシン
クの側面に固定する押え板を設けたことを特徴とする。In the superconducting magnet according to the second aspect of the present invention, an endless heat pipe is provided for the openings at both ends of the cylindrical heat sink in which the inner tank containing the superconducting coil is housed. It is characterized in that a middle plate of the meandering part fixes an insulating plate embedded therein, and a holding plate for fixing an end part of the meandering part of the heat pipe to a side surface of the heat sink is provided.
【００１１】また、請求項３に記載の発明の超電導磁石
は、超電導コイルが収納された内槽が内部に収納される
筒状のヒートシンクの両端の開口部に対して、無端状の
ヒートパイプの偏平なコイル部の片側の中間部が内部に
埋設された絶縁板を固定し、ヒートパイプのコイル部の
端部の片側をヒートシンクの側面に固定する押え板を設
けたことを特徴とする。In the superconducting magnet according to the third aspect of the present invention, an endless heat pipe is provided for the openings at both ends of the cylindrical heat sink in which the inner tank containing the superconducting coil is housed. A flat plate is provided with a holding plate for fixing an insulating plate having an intermediate portion on one side embedded therein and fixing one side of an end of the coil portion of the heat pipe to a side surface of the heat sink.
【００１２】さらに、請求項４に記載の発明の超電導磁
石は、超電導コイルが収納された内槽が内部に収納され
る筒状のヒートシンクの両端の開口部に対して、絶縁板
を取り付け、この一対の絶縁板に対して、中間部の両側
が貫通し、一端がヒートシンクで冷却される複数のヒー
トパイプを設けたことを特徴とする。Further, in the superconducting magnet according to the invention described in claim 4, insulating plates are attached to the openings at both ends of the cylindrical heat sink in which the inner tank containing the superconducting coil is housed. It is characterized in that a plurality of heat pipes, which penetrate through both sides of the intermediate part and whose one end is cooled by a heat sink, are provided for the pair of insulating plates.
【００１３】[0013]
【作用】請求項１に記載の発明においては、超電導コイ
ルで発生した磁束は、絶縁板及びこの絶縁板に貫挿され
たヒートパイプと鎖交し、絶縁板とヒートパイプは、こ
のヒートパイプの内部に注入された冷媒によって冷却さ
れる。In the invention described in claim 1, the magnetic flux generated in the superconducting coil interlinks with the insulating plate and the heat pipe inserted through the insulating plate, and the insulating plate and the heat pipe are It is cooled by the refrigerant injected inside.
【００１４】また、請求項２に記載の発明においては、
超電導コイルで発生した磁束は、絶縁板及びこの絶縁板
に埋設されたヒートパイプの蛇行部と鎖交し、絶縁板と
ヒートパイプは、このヒートパイプの内部に注入された
冷媒によって冷却され、この冷媒は、押え板を介してヒ
ートシンクで冷却される。Further, in the invention described in claim 2,
The magnetic flux generated in the superconducting coil interlinks with the insulating plate and the meandering portion of the heat pipe embedded in the insulating plate, and the insulating plate and the heat pipe are cooled by the refrigerant injected into the inside of the heat pipe. The coolant is cooled by the heat sink via the holding plate.
【００１５】また、請求項３に記載の発明においては、
超電導コイルで発生した磁束は、絶縁板及びこの絶縁板
に片側の中間部が埋設されたヒートパイプと鎖交し、絶
縁板とヒートパイプは、このヒートパイプの内部に注入
された冷媒によって冷却され、この冷媒は、押え板を介
してヒートシンクで冷却される。Further, in the invention described in claim 3,
The magnetic flux generated in the superconducting coil interlinks with the insulating plate and the heat pipe in which the intermediate portion on one side is embedded in the insulating plate, and the insulating plate and the heat pipe are cooled by the refrigerant injected inside the heat pipe. The coolant is cooled by the heat sink via the holding plate.
【００１６】さらに、請求項４に記載の発明において
は、超電導コイルで発生した磁束は、絶縁板及びこの絶
縁板に中間部の両側が貫通したヒートパイプと鎖交し、
絶縁板とヒートパイプは、このヒートパイプの内部に注
入された冷媒によって冷却され、この冷媒は、ヒートパ
イプの一端を冷却するヒートシンクで冷却される。Further, in the invention as set forth in claim 4, the magnetic flux generated in the superconducting coil is linked to the insulating plate and the heat pipe penetrating both sides of the intermediate portion of the insulating plate,
The insulating plate and the heat pipe are cooled by the coolant injected into the heat pipe, and the coolant is cooled by the heat sink that cools one end of the heat pipe.
【００１７】[0017]
【実施例】以下、本発明の超電導磁石の一実施例を図面
を参照して説明する。図１（ａ）は、本発明の超電導磁
石の第１の実施例を示す正面図、図１（ｂ）は、図１
（ａ）のＡ−Ａ断面図（但し、一部は右側面図）であ
る。また、図２（ａ）は、図１（ａ）の前面図、図２
（ｂ）は、図１の上端部の部分拡大斜視図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the superconducting magnet of the present invention will be described below with reference to the drawings. 1 (a) is a front view showing a first embodiment of a superconducting magnet of the present invention, and FIG. 1 (b) is FIG.
It is an AA sectional view (however, a part is right side view) of (a). 2A is a front view of FIG.
FIG. 2B is a partially enlarged perspective view of the upper end portion of FIG. 1.
【００１８】図１及び図２において、超電導コイル７を
収納する中容器２の外側の容器４は、略長方形に組み立
てられている。すなわち、アルミニウム板で製作された
ヒートシンク３は、図１（ｂ）に示すように、上下端が
Ｕ字形に形成され、上下を挟む両側面も一体に形成され
て、略角筒状となっている。1 and 2, the container 4 outside the middle container 2 for accommodating the superconducting coil 7 is assembled into a substantially rectangular shape. That is, as shown in FIG. 1B, the heat sink 3 made of an aluminum plate has U-shaped upper and lower ends, and both side surfaces sandwiching the upper and lower sides are integrally formed to have a substantially rectangular tube shape. There is.
【００１９】このヒートシンク３の両側には、以下説明
するＧＦＲＰ材の積層板１がボルトで固定されている。
また、ヒートシンク３の上下端の中央部には、同じくア
ルミニウム材の冷却パイプ10が添設されている。On both sides of the heat sink 3, laminated plates 1 of GFRP material described below are fixed with bolts.
A cooling pipe 10 made of an aluminum material is also attached to the center of the upper and lower ends of the heat sink 3.
【００２０】このうち、積層板１には、この積層板１の
図５で後述する製造経程において、従来の技術で示した
図14及び図15に示すように、複数のヘアピン状に湾曲形
成されたヒートパイプ６の中央部が積層板１の中央部に
埋設され、このヒートパイプ６の両端の湾曲部６ａは、
積層板１の上下の端面から露出している。ヒートパイプ
６の上端の左右端は、接続管６ｂで互いに接続され、右
端には、封じ切り用のバルブ13が接続されている。Among them, the laminated plate 1 is curvedly formed into a plurality of hairpins as shown in FIGS. 14 and 15 of the prior art in the manufacturing process of the laminated plate 1 described later with reference to FIG. The central portion of the heat pipe 6 is embedded in the central portion of the laminated plate 1, and the curved portions 6a at both ends of the heat pipe 6 are
It is exposed from the upper and lower end surfaces of the laminated plate 1. The left and right ends of the upper end of the heat pipe 6 are connected to each other by a connecting pipe 6b, and the closing valve 13 is connected to the right end.
【００２１】ヒートパイプ６の内部は、冷媒として液体
窒素が注入され、内槽２の内部には、液体ヘリウムが封
入されている。容器４と内槽２との間は、真空となって
いる。容器４とこの容器４の外側の外容器との間も、真
空となっている。Liquid nitrogen is injected as a refrigerant into the heat pipe 6, and liquid helium is sealed inside the inner tank 2. A vacuum is provided between the container 4 and the inner tank 2. A vacuum is also formed between the container 4 and the outer container outside the container 4.
【００２２】積層板１の上下端には、アルミニウム板か
ら製作された帯板状の押え板11が設けられ、この押え板
11は、この押え板11とシートヒンク３の両側に貫挿され
た複数のボルトによってヒートシンク３の両側に固定さ
れている。この結果、ヒートパイプ６の湾曲部６ａと接
続管６ｂは、押え板11によってシートヒンク３に押圧さ
れている。At the upper and lower ends of the laminated plate 1, there are provided strip-shaped holding plates 11 made of aluminum plates.
11 are fixed to both sides of the heat sink 3 by a plurality of bolts which are inserted into both sides of the pressing plate 11 and the seat hink 3. As a result, the curved portion 6a and the connecting pipe 6b of the heat pipe 6 are pressed against the seat hinge 3 by the pressing plate 11.
【００２３】なお、押え板11とヒートシンク３の間に
は、押え板11とヒートシンク３及びこの間のヒートパイ
プ６との熱伝導率を上げるために、あらかじめインジウ
ムが挿入されている。Indium is previously inserted between the holding plate 11 and the heat sink 3 in order to increase the thermal conductivity of the holding plate 11, the heat sink 3 and the heat pipe 6 between them.
【００２４】このように構成された超電導磁石において
は、コイル７への通電によって発生した磁束は、左右の
積層板１を貫通するが、従来のアルミニウム板材で製作
された容器のような回路が形成されないので、高い超電
力は発生せず、渦電流による損失、すなわち、温度上昇
を防ぐことができる。In the superconducting magnet constructed as described above, the magnetic flux generated by the energization of the coil 7 penetrates the left and right laminated plates 1, but forms a circuit like a container made of conventional aluminum plate material. Therefore, high super power is not generated, and loss due to eddy current, that is, temperature rise can be prevented.
【００２５】一方、積層板１は、この積層板１の内部に
埋設されたヒートパイプ６の内部の液体窒素によって冷
却され、この液体窒素は、上下の湾曲部６ａと接続部６
ｂがヒートシンク３を介して冷却パイプ10の液化窒素に
よって冷却される。On the other hand, the laminated plate 1 is cooled by the liquid nitrogen inside the heat pipe 6 embedded in the laminated plate 1, and this liquid nitrogen is connected to the upper and lower curved portions 6a and the connecting portion 6.
b is cooled by the liquefied nitrogen in the cooling pipe 10 via the heat sink 3.
【００２６】なお、上記実施例において、積層材１の内
部の強化繊維は、ガラス繊維を使用した例で説明した
が、ガラス繊維の代り炭素繊維を使ってＣＦＲＰ材の積
層材としてもよい。In the above embodiment, the reinforcing fiber inside the laminated material 1 is described as an example in which glass fiber is used, but carbon fiber instead of glass fiber may be used as a laminated material of CFRP material.
【００２７】また、上記実施例において、ヒートパイプ
６や冷却管10は、断面が長方形の角管を用いてもよい。
この場合には、曲げ部の形成の作業性は劣るが、ヒート
シンク３の表面との接触面積を増やすことができるの
で、両者間の熱伝達率を上げることができる利点があ
る。In the above embodiment, the heat pipe 6 and the cooling pipe 10 may be rectangular pipes having a rectangular cross section.
In this case, the workability of forming the bent portion is inferior, but since the contact area with the surface of the heat sink 3 can be increased, there is an advantage that the heat transfer coefficient between them can be increased.
【００２８】さらに、ヒートパイプ６の湾曲部６ａ，接
続部６ｂや、冷却管10とヒートシンク３との接触部分に
は、銀ろうで接続することで、熱伝達を更に良好にする
とともに、この超電導コイルが車両などの振動を受ける
用途に採用された場合の耐震性を上げるようにしてもよ
い。Further, the curved portion 6a and the connecting portion 6b of the heat pipe 6 and the contact portion between the cooling pipe 10 and the heat sink 3 are connected by silver brazing to further improve the heat transfer and to improve the superconductivity. Seismic resistance may be improved when the coil is used for applications such as a vehicle subject to vibration.
【００２９】次に、図３は、本発明の超電導磁石の第２
の実施例を示す図で、（ａ）は図１に対応する正面図、
（ｂ）は図３（ａ）のＢ−Ｂ断面図、図４は、図３
（ａ）の前面図である。図３及び図４において、図１及
び図２と大きく異るところは、積層板１Ａに埋設された
ヒートパイプ６Ａの湾曲形状である。Next, FIG. 3 shows a second embodiment of the superconducting magnet of the present invention.
FIG. 3A is a front view corresponding to FIG.
3B is a sectional view taken along line BB in FIG. 3A, and FIG.
It is a front view of (a). 3 and 4, the point greatly different from FIGS. 1 and 2 is the curved shape of the heat pipe 6A embedded in the laminated plate 1A.
【００３０】すなわち、図３及び図４に示したヒートパ
イプ６Ａは、断面が偏平なコイル状に形成され、このヒ
ートパイプ６Ａの偏平部の片側が積層板１Ａに埋設さ
れ、他側は積層板１Ａの外側に露出している。また、容
器４Ａの底部は、両端が上方に折り曲げられてＵ字状を
なすシールド底板14で形成されている。That is, the heat pipe 6A shown in FIGS. 3 and 4 is formed in a coil shape having a flat cross section, one side of the flat portion of the heat pipe 6A is embedded in the laminated plate 1A, and the other side is laminated plate. It is exposed to the outside of 1A. The bottom of the container 4A is formed by a U-shaped shield bottom plate 14 with both ends bent upward.
【００３１】ヒートパイプ６Ａは、図３において左側の
上端と右側の下端が、積層板１Ａの外側に配設された接
続管６ｃで接続されている。その他、積層板１Ａの上端
には、ヒートパイプ６Ａの上端をヒートシンク３の左右
に固定する押え板11が図１，図２と同様に設けられ、ヒ
ートシンク３の上面に対して、冷却パイプ10が添設され
ている。In the heat pipe 6A, the left upper end and the right lower end in FIG. 3 are connected by a connecting pipe 6c arranged outside the laminated plate 1A. In addition, a pressing plate 11 for fixing the upper end of the heat pipe 6A to the left and right of the heat sink 3 is provided on the upper end of the laminated plate 1A, as in FIGS. 1 and 2, and a cooling pipe 10 is provided on the upper surface of the heat sink 3. It is attached.
【００３２】このように構成された超電導磁石において
は、ヒートパイプ６Ａのコイル部分の巻数を増やすこと
ができるだけでなく、隣接したパイプを流れる冷媒の方
向を同一とすることができるので、隣接したパイプ間に
おける熱交換のおそれを解消することもできる。また、
ヒートパイプ６の上端で冷却された冷媒の重力による流
下が円滑に行われる。In the superconducting magnet configured as described above, not only can the number of turns of the coil portion of the heat pipe 6A be increased, but also the direction of the refrigerant flowing through the adjacent pipes can be made the same, so that the adjacent pipes It is also possible to eliminate the risk of heat exchange between the two. Also,
The refrigerant cooled at the upper end of the heat pipe 6 smoothly flows by gravity.
【００３３】次に、図５（ａ）は、図３及び図４で示し
た積層板１Ａとヒートパイプ６の製造の過程を示す説明
図で、（ｂ）は（ａ）のＤ−Ｄ断面図である。また、図
６（ａ）は、図３で示した積層板１Ａとヒートパイプ６
Ａの単体を示す正面図、図６（ｂ）は図６（ａ）のＥ−
Ｅ断面図である。Next, FIG. 5A is an explanatory view showing a process of manufacturing the laminated plate 1A and the heat pipe 6 shown in FIGS. 3 and 4, and FIG. 5B is a sectional view taken along line DD of FIG. It is a figure. Further, FIG. 6A shows the laminated plate 1A and the heat pipe 6 shown in FIG.
The front view which shows the simple substance of A, FIG.6 (b) is E- of FIG.6 (a).
It is an E sectional view.
【００３４】図５（ａ），（ｂ）に示すように、積層板
１Ａにヒートパイプ６Ａを埋設するときは、ガラスマッ
トにエポキシ樹脂を含浸させた片側の積層材１ａの上面
に所定の数と長さの細管12を所定の間隔で重ねる。各細
管12の間にも幅の狭い積層材１ｂを重ね、この積層材１
ｂの上に、積層材１ａと同一寸法の積層材１ｃを重ね
る。As shown in FIGS. 5 (a) and 5 (b), when the heat pipe 6A is embedded in the laminated plate 1A, a predetermined number of layers are formed on the upper surface of the laminated material 1a on one side in which the glass mat is impregnated with the epoxy resin. And thin tubes 12 having a length are overlapped at a predetermined interval. The narrow laminated material 1b is also overlapped between the thin tubes 12, and the laminated material 1
A laminated material 1c having the same size as the laminated material 1a is overlaid on b.
【００３５】これらを加熱・乾燥して一体の板状にし接
合し硬化させた後、各細管12を折り曲げ、隣接した細管
12の上端にろう付する。最後に接続管６ｃと封じ切りバ
ルブ13を接続し、液体窒素を注入する。封じ切りバルブ
13は、なるべくヒートシンク３に近い部分に設けること
により、冷媒の封入作業の作業性を上げることができ
る。After heating and drying these to form an integral plate-like plate and joining and curing, each thin tube 12 is bent to form an adjacent thin tube.
Braze to the top of 12. Finally, the connection pipe 6c and the shutoff valve 13 are connected to each other, and liquid nitrogen is injected. Shut-off valve
By providing 13 as close to the heat sink 3 as possible, it is possible to improve the workability of the refrigerant filling work.
【００３６】次に、本発明の超電導磁石の第３の実施例
を図７及び図８で説明する。このうち、図７（ａ）は、
図１及び図３に対応する正面図、図７（ｂ）は、図７
（ａ）のＣ−Ｃ断面図、図８は、図７の前面図である。Next, a third embodiment of the superconducting magnet of the present invention will be described with reference to FIGS. Of these, FIG.
The front view corresponding to FIGS. 1 and 3 and FIG.
8A is a sectional view taken along line CC of FIG. 8A, and FIG.
【００３７】図７及び図８においては、図３で示したヒ
ートシンク３の代りに、両側が下側に折り曲げられたシ
ールド上板15で容器の上端が形成されている。また、左
右の積層板１Ｂの内部には、無端状の複数のヒートパイ
プ６Ｂの一部が、図９，図10及び図11で後述する方法で
埋設されている。このヒートパイプ６Ｂの上端は、詳細
省略した別置のヒートシンク３Ａの内部に突き出てい
る。このヒートシンク３Ａには、液体窒素が封入された
熱交換器となっている。この場合には、各ヒートパイプ
６Ｂをヒートシンク３Ａで直接冷却することができるの
で、熱伝達効率が上がり、冷却効果を上げることができ
る。7 and 8, instead of the heat sink 3 shown in FIG. 3, the upper end of the container is formed by a shield upper plate 15 whose both sides are bent downward. Further, inside the left and right laminated plates 1B, a part of a plurality of endless heat pipes 6B is embedded by a method described later with reference to FIGS. 9, 10 and 11. The upper end of the heat pipe 6B projects into the heat sink 3A which is not shown in detail and is placed separately. The heat sink 3A is a heat exchanger in which liquid nitrogen is sealed. In this case, since each heat pipe 6B can be directly cooled by the heat sink 3A, the heat transfer efficiency can be improved and the cooling effect can be improved.
【００３８】次に、図９は、図７及び図８で示した積層
板１Ｂとヒートパイプ６Ｂの製造の過程を示す説明図
で、図５及び図６に対応する図である。図９及び図10に
示すように、ガラスマットにエポキシ樹脂を含浸させた
片側の積層材１ａの上面に所定の数と長さの細管12を所
定の間隔で重ねる。各細管12の間にも幅の狭い積層材１
ｂを重ね、この積層材１ｂの上に、積層材１ａと同一寸
法の積層材１ｃを重ねる。Next, FIG. 9 is an explanatory view showing a process of manufacturing the laminated plate 1B and the heat pipe 6B shown in FIGS. 7 and 8, and is a view corresponding to FIGS. 5 and 6. As shown in FIGS. 9 and 10, thin tubes 12 of a predetermined number and length are stacked at a predetermined interval on the upper surface of the laminated material 1a on one side in which a glass mat is impregnated with an epoxy resin. Laminated material 1 with a narrow width between each thin tube 12
b, and a laminated material 1c having the same dimensions as the laminated material 1a is laminated on the laminated material 1b.
【００３９】これらを加熱して一体の板状にし接合し硬
化させた後、図11の斜視図に示すように各細管12の中央
部分をＵ字状に折り曲げ、各細管12の上端に対して図７
（ｂ）で示す略Ｖ字状に折り曲けた細管をろう付する。After heating these to form an integral plate and joining and curing, as shown in the perspective view of FIG. 11, the central portion of each thin tube 12 is bent into a U-shape, and the upper end of each thin tube 12 is fixed. Figure 7
A thin tube bent in a substantially V shape shown in (b) is brazed.
【００４０】最後に、図示しない封じ切りバルブ13を接
続し、液体窒素を注入する。封じ切りバルブ13は、なる
べくヒートシンク３に近い部分に設けることにより、冷
媒の封入作業の作業性を上げることができる。このよう
に構成された超電導磁石においても、ヒートパイプ６Ｂ
の数を増やすことができるので、冷却効果を上げること
ができる。Finally, a shut-off valve 13 (not shown) is connected and liquid nitrogen is injected. By providing the shutoff valve 13 as close to the heat sink 3 as possible, the workability of the refrigerant sealing work can be improved. Also in the superconducting magnet configured as described above, the heat pipe 6B
Since the number of can be increased, the cooling effect can be improved.
【００４１】次に、図12は、本発明の超電導磁石の第４
の実施例を示す説明図である。図12は、図１から図８で
示した超電導コイルにおいて、ヒートパイプ６，６Ａ，
６Ｂの内部の冷媒の気相・凝縮・液化の相変化を促進さ
せて、積層板１，１Ａ，１Ｂの冷却効果を上げる方法を
示している。Next, FIG. 12 shows the fourth embodiment of the superconducting magnet of the present invention.
It is explanatory drawing which shows Example of this. FIG. 12 shows heat pipes 6A, 6A, and 6A in the superconducting coil shown in FIGS.
It shows a method of enhancing the cooling effect of the laminated plates 1, 1A, 1B by promoting the phase change of the vapor phase / condensation / liquefaction of the refrigerant inside 6B.
【００４２】なお、ヒートパイプ６の形状は、図１及び
図２で示した超電導磁石に組み込んだ場合で示している
が、図３，４及び図７，８に示した超電導コイルに組み
込んだヒートパイプについても同様である。The shape of the heat pipe 6 is shown when it is incorporated in the superconducting magnet shown in FIGS. 1 and 2, but the heat incorporated in the superconducting coil shown in FIGS. 3, 4 and 7, 8 is shown. The same applies to pipes.
【００４３】図12においては、ヒートパイプ６とヒート
シンク３を接続する細管のうち、右側の細管に対して、
詳細省略した入熱部16が接続されている。この入熱部16
から伝達された熱によって、気相の冷媒の上昇速度を上
げることで、冷媒の気相・凝縮・液化の相変化を促進さ
せて、熱輸送の効率を上げることもできる。In FIG. 12, of the thin tubes connecting the heat pipe 6 and the heat sink 3, the right thin tube is
The heat input section 16 whose details are omitted is connected. This heat input part 16
By increasing the rate of rise of the vapor-phase refrigerant by the heat transferred from the refrigerant, it is possible to accelerate the phase change of the vapor phase / condensation / liquefaction of the refrigerant to improve the efficiency of heat transport.
【００４４】また、図13は、本発明の超電導コイルの第
５の実施例を示す説明図で、図７で示した超電導コイル
の各ヒートパイプ６Ｂの上端を冷却する手段として、図
７で示したヒートシンク３Ａの一例として冷凍機８のコ
ールドステージ９を利用した場合を示す。FIG. 13 is an explanatory view showing a fifth embodiment of the superconducting coil of the present invention, which is shown in FIG. 7 as a means for cooling the upper end of each heat pipe 6B of the superconducting coil shown in FIG. The case where the cold stage 9 of the refrigerator 8 is used is shown as an example of the heat sink 3A.
【００４５】この場合には、冷凍機８で冷却されたシー
トシンクを介して冷却される場合と比べて、直接冷却す
ることができるので、熱伝達効率を上げることができる
利点がある。In this case, compared with the case where the refrigerator 8 cools through the sheet sink cooled, the direct cooling can be performed, so that there is an advantage that the heat transfer efficiency can be increased.
【００４６】[0046]
【発明の効果】以上、請求項１に記載の発明によれば、
超電導コイルが収納された内槽が内部に収納される筒状
のヒートシンクの両端の開口部に対して、無端状のヒー
トパイプの中間部が内部に貫挿された絶縁板を取り付け
ることで、超電導コイルで発生した磁束を絶縁板及びこ
の絶縁板に貫挿されたヒートパイプと鎖交させ、絶縁板
とヒートパイプをこのヒートパイプの内部に注入された
冷媒によって冷却したので、重量や外形を増やすことな
く、渦電流も防ぐことのできる超電導磁石を得ることが
できる。As described above, according to the invention of claim 1,
By attaching an insulating plate with the middle part of the endless heat pipe inserted inside, to the openings at both ends of the cylindrical heat sink inside which the inner tank containing the superconducting coil is housed, The magnetic flux generated in the coil is interlinked with the insulating plate and the heat pipe inserted into this insulating plate, and the insulating plate and the heat pipe are cooled by the refrigerant injected inside the heat pipe, so that the weight and external shape are increased. It is possible to obtain a superconducting magnet that can prevent eddy currents.
【００４７】また、請求項２に記載の発明によれば、超
電導コイルが収納された内槽が内部に収納される筒状の
ヒートシンクの両端の開口部に対して、無端状のヒート
パイプの蛇行部の中間部が内部に埋設された絶縁板を固
定し、ヒートパイプの蛇行部の端部をヒートシンクの側
面に固定する押え板を設けることで、超電導コイルで発
生した磁束を絶縁板及びこの絶縁板に埋設されたヒート
パイプの蛇行部と鎖交させ、絶縁板とヒートパイプをこ
のヒートパイプの内部に注入された冷媒によって冷却
し、この冷媒は、押え板を介してヒートシンクで冷却し
たので、重量や外形を増やすことなく、渦電流も防ぐこ
とのできる超電導磁石を得ることができる。According to the second aspect of the invention, the endless heat pipe meanders with respect to the openings at both ends of the cylindrical heat sink in which the inner tank in which the superconducting coil is accommodated is accommodated. By fixing the insulation plate with the middle part of the part embedded inside and fixing the end of the meandering part of the heat pipe to the side surface of the heat sink, the magnetic flux generated in the superconducting coil is insulated from the insulation plate and this insulation. By interlinking with the meandering part of the heat pipe embedded in the plate, the insulating plate and the heat pipe are cooled by the refrigerant injected inside the heat pipe, and this refrigerant is cooled by the heat sink via the holding plate, It is possible to obtain a superconducting magnet that can prevent eddy currents without increasing the weight or the outer shape.
【００４８】また、請求項３に記載の発明によれば、超
電導コイルが収納された内槽が内部に収納される筒状の
ヒートシンクの両端の開口部に対して、無端状のヒート
パイプの偏平なコイル部の片側の中間部が内部に埋設さ
れた絶縁板を固定し、ヒートパイプのコイル部の端部の
片側をヒートシンクの側面に固定する押え板を設けるこ
とで、超電導コイルで発生した磁束を絶縁板及びこの絶
縁板に片側の中間部が埋設されたヒートパイプと鎖交さ
せ、絶縁板とヒートパイプをこのヒートパイプの内部に
注入された冷媒によって冷却し、この冷媒は、押え板を
介してヒートシンクで冷却したので、重量や外形を増や
すことなく、渦電流も防ぐことのできる超電導磁石を得
ることができる。According to the third aspect of the present invention, the flat endless heat pipe is flattened with respect to the openings at both ends of the cylindrical heat sink in which the inner tank containing the superconducting coil is housed. The magnetic flux generated in the superconducting coil is fixed by fixing the insulating plate with the intermediate part on one side of the coil part embedded inside and by fixing the one side of the end part of the coil part of the heat pipe to the side surface of the heat sink. Is made to interlink with the insulating plate and the heat pipe in which the intermediate portion on one side is embedded in this insulating plate, and the insulating plate and the heat pipe are cooled by the refrigerant injected into this heat pipe, and this refrigerant is Since it is cooled by the heat sink via the superconducting magnet, it is possible to obtain a superconducting magnet which can prevent eddy currents without increasing the weight and the outer shape.
【００４９】さらに、請求項４に記載の発明によれば、
超電導コイルが収納された内槽が内部に収納される筒状
のヒートシンクの両端の開口部に対して、絶縁板を取り
付け、この一対の絶縁板に対して、中間部の両側が貫通
し、一端がヒートシンクで冷却される複数のヒートパイ
プを設けることで、超電導コイルで発生した磁束を絶縁
板及びこの絶縁板に中間部の両側が貫通したヒートパイ
プと鎖交させ、絶縁板とヒートパイプをこのヒートパイ
プの内部に注入された冷媒によって冷却し、この冷媒
は、ヒートパイプの一端を冷却するヒートシンクによっ
て冷却したので、重量や外形を増やすことなく、渦電流
も防ぐことのできる超電導磁石を得ることができる。Further, according to the invention of claim 4,
Insulating plates are attached to the openings at both ends of the cylindrical heat sink in which the inner tank containing the superconducting coil is housed. By providing multiple heat pipes that are cooled by heat sinks, the magnetic flux generated in the superconducting coil is linked to the insulating plate and the heat pipe that penetrates both sides of the intermediate part of this insulating plate, and the insulating plate and the heat pipe are It is cooled by the refrigerant injected inside the heat pipe, and this refrigerant is cooled by the heat sink that cools one end of the heat pipe, so it is possible to obtain a superconducting magnet that can prevent eddy currents without increasing the weight or external shape. You can
【図面の簡単な説明】[Brief description of drawings]
【図１】（ａ）は、本発明の超電導磁石の第１の実施例
を示す正面図、（ｂ）は、（ａ）のＡ−Ａ断面図。FIG. 1A is a front view showing a first embodiment of a superconducting magnet of the present invention, and FIG. 1B is a sectional view taken along line AA of FIG.
【図２】（ａ）は、図１（ａ）の前面図、（ｂ）は、図
１の部分拡大斜視図。2A is a front view of FIG. 1A, and FIG. 2B is a partially enlarged perspective view of FIG.
【図３】（ａ）は、本発明の超電導磁石の第２の実施例
を示す正面図、（ｂ）は、（ａ）のＢ−Ｂ断面図。FIG. 3A is a front view showing a second embodiment of the superconducting magnet of the present invention, and FIG. 3B is a sectional view taken along line BB of FIG.
【図４】図３（ａ）の前面図。FIG. 4 is a front view of FIG.
【図５】本発明の超電導磁石の製造過程を示す図で、
（ａ）は半面図、（ｂ）は（ａ）のＤ−Ｄ断面図。FIG. 5 is a diagram showing a manufacturing process of the superconducting magnet of the present invention,
(A) is a half view, (b) is a DD sectional view of (a).
【図６】本発明の超電導磁石の図５と異る製造過程を示
す図で、（ａ）は半面図、（ｂ）は（ａ）のＥ−Ｅ断面
図。6A and 6B are views showing a manufacturing process different from FIG. 5 of the superconducting magnet of the present invention, FIG. 6A is a half view and FIG. 6B is a sectional view taken along line EE of FIG.
【図７】本発明の超電導磁石の第３の実施例を示す図
で、（ａ）は正面図、（ｂ）は（ａ）のＣ−Ｃ断面図。7A and 7B are views showing a third embodiment of the superconducting magnet of the present invention, FIG. 7A is a front view, and FIG. 7B is a sectional view taken along line CC of FIG.
【図８】図７の前面図。FIG. 8 is a front view of FIG.
【図９】本発明の超電導磁石の第３の実施例の製造過程
の第１の工程を示す平面図。FIG. 9 is a plan view showing the first step of the manufacturing process of the third embodiment of the superconducting magnet of the present invention.
【図１０】本発明の超電導磁石の第３の実施例の製造過
程の第２の工程を示す平面図。FIG. 10 is a plan view showing a second step of the manufacturing process of the third embodiment of the superconducting magnet of the present invention.
【図１１】本発明の超電導磁石の第３の実施例の製造過
程の第３の工程を示す斜視図。FIG. 11 is a perspective view showing a third step of the manufacturing process of the third embodiment of the superconducting magnet of the present invention.
【図１２】本発明の超電導磁石の第４の実施例を示す正
面図。FIG. 12 is a front view showing a fourth embodiment of the superconducting magnet of the present invention.
【図１３】本発明の超電導磁石の第５の実施例を示す正
面図。FIG. 13 is a front view showing a fifth embodiment of the superconducting magnet of the present invention.
【図１４】従来の超電導磁石の一例を示す図で、（ａ）
は正面図、（ｂ）は（ａ）の右側面図。FIG. 14 is a view showing an example of a conventional superconducting magnet, (a)
Is a front view, and (b) is a right side view of (a).
【図１５】従来の超電導磁石の図14と異る一例を示す図
で、（ａ）は正面図、（ｂ）は（ａ）の右側面図。15A and 15B are views showing an example of a conventional superconducting magnet different from FIG. 14, in which FIG. 15A is a front view and FIG. 15B is a right side view of FIG.
１，１Ａ，１Ｂ…積層板、２…内槽、３，３Ａ…ヒート
シンク、４，４Ａ…容器、６，６Ａ，６Ｂ…ヒートパイ
プ、７…超電導コイル、10…冷却管、11…押え板、12…
細管、13…封じ切りバルブ、14…シールド底板、15…シ
ールド上板。1, 1A, 1B ... laminated plate, 2 ... inner tank, 3, 3A ... heat sink, 4, 4A ... container, 6, 6A, 6B ... heat pipe, 7 ... superconducting coil, 10 ... cooling pipe, 11 ... holding plate, 12 ...
Capillary tube, 13… closed valve, 14… shield bottom plate, 15… shield top plate.
Claims (4)
収納される筒状のヒートシンクと、このヒートシンクの
両端の開口部に設けられ無端状のヒートパイプの中間部
が内部に貫挿された絶縁板を備えた超電導磁石。1. A cylindrical heat sink in which an inner tank containing a superconducting coil is housed, and an intermediate portion of an endless heat pipe provided in openings at both ends of the heat sink is inserted therein. A superconducting magnet with an insulating plate.
収納される筒状のヒートシンクと、このヒートシンクの
両端の開口部に設けられ無端状のヒートパイプの蛇行部
の中間部が内部に埋設された絶縁板と、前記ヒートパイ
プの蛇行部の端部を前記ヒートシンクの側面に固定する
押え板を備えた超電導磁石。2. A tubular heat sink in which an inner tank containing a superconducting coil is housed, and an intermediate portion of a meandering portion of an endless heat pipe provided in openings at both ends of the heat sink is embedded inside. Superconducting magnet having an insulating plate and a holding plate for fixing the end of the meandering portion of the heat pipe to the side surface of the heat sink.
収納される筒状のヒートシンクと、このヒートシンクの
両端の開口部に設けられ無端状のヒートパイプの偏平な
コイル部の片側の中間部が内部に埋設された絶縁板と、
前記ヒートパイプのコイル部の端部の片側を前記ヒート
シンクの側面に固定する押え板を備えた超電導磁石。3. A cylindrical heat sink in which an inner tank containing a superconducting coil is housed, and an intermediate portion on one side of a flat coil portion of an endless heat pipe provided in openings at both ends of the heat sink. An insulating plate embedded inside,
A superconducting magnet comprising a pressing plate for fixing one side of an end portion of a coil portion of the heat pipe to a side surface of the heat sink.
収納される筒状のヒートシンクと、このヒートシンクの
両端の開口部に設けられる絶縁板と、この一対の絶縁板
を中間部の両側が貫通し、一端がヒートシンクで冷却さ
れる複数のヒートパイプを備えた超電導コイル。4. A cylindrical heat sink in which an inner tank containing a superconducting coil is housed, insulating plates provided in openings at both ends of the heat sink, and a pair of insulating plates on both sides of an intermediate part. A superconducting coil that has a plurality of heat pipes that penetrate and are cooled at one end by a heat sink.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4962295A JP3563476B2 (en) | 1995-03-09 | 1995-03-09 | Superconducting magnet |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4962295A JP3563476B2 (en) | 1995-03-09 | 1995-03-09 | Superconducting magnet |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08250324A true JPH08250324A (en) | 1996-09-27 |
| JP3563476B2 JP3563476B2 (en) | 2004-09-08 |
Family
ID=12836338
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4962295A Expired - Fee Related JP3563476B2 (en) | 1995-03-09 | 1995-03-09 | Superconducting magnet |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3563476B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533625A1 (en) * | 2003-11-19 | 2005-05-25 | General Electric Company | Low eddy current cryogen circuit for superconducting magnets |
| CN106504848A (en) * | 2016-12-13 | 2017-03-15 | 贵州航天新力铸锻有限责任公司 | The direct-cooled flow passage structure of ITER magnet support efficient heat transfers |
-
1995
- 1995-03-09 JP JP4962295A patent/JP3563476B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1533625A1 (en) * | 2003-11-19 | 2005-05-25 | General Electric Company | Low eddy current cryogen circuit for superconducting magnets |
| JP2005217392A (en) * | 2003-11-19 | 2005-08-11 | General Electric Co <Ge> | Low eddy current cryogen circuit for superconducting magnet |
| US7464558B2 (en) | 2003-11-19 | 2008-12-16 | General Electric Company | Low eddy current cryogen circuit for superconducting magnets |
| JP4691350B2 (en) * | 2003-11-19 | 2011-06-01 | ゼネラル・エレクトリック・カンパニイ | Low eddy current cryogen circuit for superconducting magnets. |
| US8033121B2 (en) | 2003-11-19 | 2011-10-11 | General Electric Company | Low eddy current cryogen circuit for superconducting magnets |
| CN106504848A (en) * | 2016-12-13 | 2017-03-15 | 贵州航天新力铸锻有限责任公司 | The direct-cooled flow passage structure of ITER magnet support efficient heat transfers |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3563476B2 (en) | 2004-09-08 |
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