JP6700479B2 - 熱放射スクリーン付磁石システム - Google Patents
熱放射スクリーン付磁石システム Download PDFInfo
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- JP6700479B2 JP6700479B2 JP2019507896A JP2019507896A JP6700479B2 JP 6700479 B2 JP6700479 B2 JP 6700479B2 JP 2019507896 A JP2019507896 A JP 2019507896A JP 2019507896 A JP2019507896 A JP 2019507896A JP 6700479 B2 JP6700479 B2 JP 6700479B2
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- heat
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- screen
- magnet system
- radiation screen
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- 230000005855 radiation Effects 0.000 title claims description 31
- 238000001816 cooling Methods 0.000 claims description 38
- 239000004020 conductor Substances 0.000 claims description 27
- 239000000835 fiber Substances 0.000 claims description 15
- 238000004804 winding Methods 0.000 claims description 12
- 238000009413 insulation Methods 0.000 claims description 8
- 239000001307 helium Substances 0.000 claims description 6
- 229910052734 helium Inorganic materials 0.000 claims description 6
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 claims description 6
- 238000007689 inspection Methods 0.000 claims description 5
- 239000004744 fabric Substances 0.000 claims description 4
- 239000002826 coolant Substances 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 8
- 229910052802 copper Inorganic materials 0.000 description 7
- 239000010949 copper Substances 0.000 description 7
- 229910052751 metal Inorganic materials 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000615 nonconductor Substances 0.000 description 3
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 230000003685 thermal hair damage Effects 0.000 description 2
- 239000002390 adhesive tape Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000000112 cooling gas Substances 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
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- 230000000171 quenching effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
- H01F6/00—Superconducting magnets; Superconducting coils
- H01F6/04—Cooling
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/3804—Additional hardware for cooling or heating of the magnet assembly, for housing a cooled or heated part of the magnet assembly or for temperature control of the magnet assembly
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
- G01R33/20—Arrangements or instruments for measuring magnetic variables involving magnetic resonance
- G01R33/28—Details of apparatus provided for in groups G01R33/44 - G01R33/64
- G01R33/38—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
- G01R33/381—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets
- G01R33/3815—Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field using electromagnets with superconducting coils, e.g. power supply therefor
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- Physics & Mathematics (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Electromagnetism (AREA)
- Magnetic Resonance Imaging Apparatus (AREA)
- Containers, Films, And Cooling For Superconductive Devices (AREA)
Description
- 磁気共鳴検査システムの検査ゾーンに主磁場を発生させるための同軸巻線を備える主磁石コイルと、
- 主磁石コイル巻線を超伝導の臨界温度以下に冷却するためのコールドヘッドを有する冷却装置と、
- 主磁石コイルを囲む熱放射スクリーンと、
-熱放射スクリーンと冷却装置との間に熱経路を形成するように配置された熱遮断部であって、熱遮断部はいくつかの位置で放射スクリーンに熱的に接続されている、熱遮断部と
を有する磁石システムによって達成される。
Claims (9)
- 多数の重なり合う導電性の細長い熱伝導体を有する磁石システムのための熱放射スクリーンであって、
- 赤外波長範囲で不透明であり、前記細長い熱伝導体の間に構成されるか、又はそれらを覆うように構成される、少なくとも1つの非熱伝導性不透過層
を含み、
- 前記非熱伝導性不透過層は少なくともいくつかの前記細長い熱伝導体と熱的に接触し、
個々の非熱伝導性不透過層が、連続的な不透過シート上に配置される細長い断熱材から形成される、
熱放射スクリーン。 - 熱伝導性繊維及び非導電性繊維から形成されるファブリックを含み、前記熱伝導性繊維は前記非導電性繊維に対して横方向に配向される、請求項1に記載の熱放射スクリーン。
- 磁気共鳴検査システムのための磁石システムであって、前記磁石システムは、
- 前記磁気共鳴検査システムの検査ゾーンに主磁場を発生させるための同軸巻線を備える主磁石コイルと、
- 前記主磁石コイルの前記同軸巻線を超伝導のための臨界温度よりも低く冷却するためのコールドヘッドを有する冷却装置と、
-前記主磁石コイルを囲む、請求項1乃至2の何れか一項に記載の熱放射スクリーンと、
-前記熱放射スクリーンと前記冷却装置との間に熱経路を形成するように配置される熱遮断部であって、前記熱遮断部はいくつかの位置で前記熱放射スクリーンに熱的に接続される、熱遮断部と
を有する、磁石システム。 - 前記コールドヘッドと前記熱遮断部とは前記磁石システムの軸方向中央平面において、又はその近くで構成され、前記熱遮断部は前記軸方向中央平面において、又はその近くで前記熱放射スクリーンに熱的に接続される、請求項3に記載の磁石システム。
- 前記熱遮断部は、環状であり、前記主磁石コイルの前記同軸巻線と同軸である、請求項3乃至4の何れか一項に記載の磁石システム。
- 前記熱遮断部は、対流冷却剤、特にヘリウム蒸気を含む対流ループによって形成される、請求項3乃至5の何れか一項に記載の磁石システム。
- 前記熱遮断部は、前記主磁石コイルの間の間隙の間の軸方向位置におけるいくつかの対流ループとして形成される、請求項6に記載の磁石システム。
- 前記主磁石の前記同軸巻線は1つ又は複数の断熱ブランケットによって囲まれ、前記熱放射スクリーンは前記断熱ブランケット内に埋め込まれる、請求項3に記載の磁石システム。
- 前記熱放射スクリーンは、非構造的であり、多層絶縁ブランケットによって支持される、請求項3乃至8の何れか一項に記載の磁石システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP16184165.5 | 2016-08-15 | ||
EP16184165 | 2016-08-15 | ||
PCT/EP2017/070659 WO2018033530A1 (en) | 2016-08-15 | 2017-08-15 | Magnet system with thermal radiation screen |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2019526320A JP2019526320A (ja) | 2019-09-19 |
JP6700479B2 true JP6700479B2 (ja) | 2020-05-27 |
Family
ID=56787281
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2019507896A Active JP6700479B2 (ja) | 2016-08-15 | 2017-08-15 | 熱放射スクリーン付磁石システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US10794973B2 (ja) |
EP (1) | EP3497705B1 (ja) |
JP (1) | JP6700479B2 (ja) |
CN (1) | CN109564809B (ja) |
WO (1) | WO2018033530A1 (ja) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10634745B2 (en) | 2016-08-15 | 2020-04-28 | Koninklijke Philips N.V. | Actively shielded gradient coil assembly for a magnetic resonance examination system |
JP7212578B2 (ja) * | 2019-05-24 | 2023-01-25 | 富士フイルムヘルスケア株式会社 | 磁気共鳴イメージング装置および超電導磁石 |
JP2022133593A (ja) * | 2021-03-02 | 2022-09-14 | 株式会社東芝 | 超電導電磁石装置及び超電導電磁石装置の冷却方法 |
EP4300120A1 (en) * | 2022-06-29 | 2024-01-03 | Siemens Healthcare Limited | Thermal bus structure for a magnetic resonance imaging device |
Family Cites Families (19)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS59134843A (ja) | 1983-01-21 | 1984-08-02 | Hitachi Ltd | マニユアルプロ−バ装置 |
JPH0356063Y2 (ja) * | 1984-09-05 | 1991-12-16 | ||
US4694663A (en) | 1986-01-03 | 1987-09-22 | General Electric Company | Low cost intermediate radiation shield for a magnet cryostat |
JPH0793205B2 (ja) * | 1986-01-17 | 1995-10-09 | 三菱電機株式会社 | 極低温装置 |
US5225782A (en) * | 1991-09-13 | 1993-07-06 | General Electric Company | Eddy current free MRI magnet with integrated gradient coils |
JPH0582333A (ja) * | 1991-09-19 | 1993-04-02 | Hitachi Ltd | 核磁気共鳴診断装置 |
US5406204A (en) * | 1992-03-27 | 1995-04-11 | Picker International, Inc. | Integrated MRI gradient coil and RF screen |
US5317879A (en) | 1992-10-28 | 1994-06-07 | General Electric Company | Flexible thermal connection system between a cryogenic refrigerator and an mri superconducting magnet |
JP3140621B2 (ja) | 1993-09-28 | 2001-03-05 | 株式会社日立製作所 | 分散ファイルシステム |
US5651256A (en) | 1996-05-31 | 1997-07-29 | General Electric Company | Superconductive magnet having a thermal shield |
DE102004022934A1 (de) | 2004-05-10 | 2005-12-08 | Linde Ag | Thermischer Schild |
GB2457043B (en) | 2008-01-31 | 2010-01-06 | Siemens Magnet Technology Ltd | Apparatus for improved precoooling of a thermal radiation shield in a cryostat |
JP4790000B2 (ja) * | 2008-12-17 | 2011-10-12 | アイシン精機株式会社 | 超電導装置用真空容器および超電導装置 |
GB2467596B (en) * | 2009-02-10 | 2011-01-12 | Siemens Magnet Technology Ltd | A thermal radiation shield, a cryostat containing a cooled magnet and an MRI system comprising a radiation shield |
US8710944B2 (en) | 2010-05-25 | 2014-04-29 | General Electric Company | Superconducting magnetizer |
US8676282B2 (en) | 2010-10-29 | 2014-03-18 | General Electric Company | Superconducting magnet coil support with cooling and method for coil-cooling |
GB2487215B (en) * | 2011-01-13 | 2014-12-10 | Siemens Plc | Electrically conductive shield for superconducting electromagnet system |
JP6276033B2 (ja) | 2013-01-15 | 2018-02-07 | 株式会社神戸製鋼所 | 極低温装置及び被冷却体に対する冷凍機の接続及び切り離し方法 |
JP6149465B2 (ja) * | 2013-03-29 | 2017-06-21 | ブラザー工業株式会社 | 液体吐出装置 |
-
2017
- 2017-08-15 WO PCT/EP2017/070659 patent/WO2018033530A1/en unknown
- 2017-08-15 JP JP2019507896A patent/JP6700479B2/ja active Active
- 2017-08-15 EP EP17751109.4A patent/EP3497705B1/en active Active
- 2017-08-15 CN CN201780049698.8A patent/CN109564809B/zh active Active
- 2017-08-15 US US16/324,589 patent/US10794973B2/en active Active
Also Published As
Publication number | Publication date |
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CN109564809B (zh) | 2022-04-01 |
US20190187228A1 (en) | 2019-06-20 |
CN109564809A (zh) | 2019-04-02 |
US10794973B2 (en) | 2020-10-06 |
WO2018033530A1 (en) | 2018-02-22 |
EP3497705A1 (en) | 2019-06-19 |
JP2019526320A (ja) | 2019-09-19 |
EP3497705B1 (en) | 2020-03-25 |
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