CN203118700U - Superconducting magnet device and magnetic resonance imaging device - Google Patents
Superconducting magnet device and magnetic resonance imaging device Download PDFInfo
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- CN203118700U CN203118700U CN 201320145540 CN201320145540U CN203118700U CN 203118700 U CN203118700 U CN 203118700U CN 201320145540 CN201320145540 CN 201320145540 CN 201320145540 U CN201320145540 U CN 201320145540U CN 203118700 U CN203118700 U CN 203118700U
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Abstract
The utility model discloses a superconducting magnet device and a magnetic resonance imaging device. The superconducting magnet device structurally comprises a superconducting coil and a low-temperature container, a first cooling agent is filled in the low-temperature container, the superconducting coil is arranged in the first cooling agent, a vacuum cavity is arranged on the outer side of the low-temperature container, a thermal-insulation cavity is arranged on the outer side of the vacuum cavity, a second cooling agent is filled in the thermal-insulation cavity, the superconducting coil is made of high-temperature superconducting bismuth tying belt materials, temperature of the first cooling agent is lower than that of the second cooling agent, and temperature of the second cooling agent is lower than critical temperature of the superconducting coil. The superconducting magnet device overcomes defects in the prior art, uses the high-temperature superconducting bismuth tying belt materials to manufacture the superconducting coil, arranges two layers of cooling agents to insulation, guarantees that the superconducting coil is below the critical temperature to the maximum degree and avoids quenching phenomena.
Description
Technical field
The utility model relates to a kind of medical apparatus, especially a kind of superconducting magnet apparatus and MR imaging apparatus.
Background technology
Magnetic resonance imaging is a kind of special examined that uses magnetic field and radio-frequency pulse to carry out, have safety, accurately, no wound, harmless advantage.MR imaging apparatus need use a main magnet to produce powerful static magnetic field.
Present stage master magnet is divided three classes: common electrical magnet, permanent magnet and superconducting magnet.The common electrical magnet is to utilize stronger direct current to produce magnetic field by coil, and power consumption is big, and magnetic field intensity just can reach stable state after a few hours that generally need to switch on.Permanent magnet can keep magnetic for a long time, but magnetic field intensity is lower after once magnetizing.Superconducting magnet is to use many a kind of main magnets at present, under superconducting state, does not have resistance loss when electric current flows through conductor, thereby conductor is heated up.
The lead of same diameter can not damage by bigger electric current under superconducting state.The coil made from superconductor passes to powerful electric current and can produce strong magnetic field, and after impressed current cut off, the electric current in the superconducting coil still remained unchanged, thereby cryogenic magnetic field is very stable.
When using superconducting magnet, superconducting coil need be put into low temperature environment so that it keeps superconducting state.In case the temperature of superconducting coil is higher than critical temperature, just can produce " quench " phenomenon, make coil temperature sharply raise, magnetic field is weak serious, and equipment can't normally use.
Summary of the invention
The technical problems to be solved in the utility model provides a kind of superconducting magnet apparatus and MR imaging apparatus, can solve the deficiencies in the prior art, make superconducting coil by using high-temperature superconductor bi tape material, and two-layer cooling agent is set is incubated, guaranteed that to greatest extent superconducting coil is in below the critical temperature, avoids the generation of " quench " phenomenon.
For solving the problems of the technologies described above, technical solution adopted in the utility model is as follows.
A kind of superconducting magnet apparatus, comprise superconducting coil and low-temperature (low temperature) vessel in the structure, be filled with first cooling agent in the low-temperature (low temperature) vessel, superconducting coil is arranged in first cooling agent, in described low-temperature (low temperature) vessel arranged outside vacuum cavity is arranged, in the vacuum cavity arranged outside incubation cavity is arranged, be filled with second cooling agent in the incubation cavity; Described superconducting coil adopts high-temperature superconductor bi tape material to make, and the temperature of described first cooling agent is lower than the temperature of second cooling agent, and the temperature of second cooling agent is lower than the critical temperature of described superconducting coil.
As preferably, described first cooling agent adopts liquid helium, and described second cooling agent adopts liquid nitrogen.
As preferably, be provided with thermal radiation in the described vacuum cavity.
In addition, this use is novel also to provide a kind of MR imaging apparatus, comprises aforesaid superconducting magnet apparatus.
The beneficial effect that adopts technique scheme to bring is:
Superconducting coil in the utility model adopts high-temperature superconductor bi tape material to make, and its critical temperature is higher than the temperature of liquid nitrogen.Superconducting coil is positioned in the liquid helium, can further reduces its temperature, guarantee that it is in superconducting state always.Vacuum cavity is set outside low-temperature (low temperature) vessel, thermal radiation is set in vacuum cavity, can reduce the exchange heat in low-temperature (low temperature) vessel and the external world, keep the temperature of low-temperature (low temperature) vessel.Filled with liquid nitrogen in the outer incubation cavity that arranges of vacuum cavity, make the temperature of the inside and outside both sides of vacuum cavity all be lower than the critical temperature of superconducting coil, guaranteed when the vacuum cavity heat-blocking action reduces, also can not cause superconducting coil to produce " quench " phenomenon owing to external heat imports low-temperature (low temperature) vessel into.
Description of drawings
Fig. 1 is the schematic diagram of an embodiment of the utility model;
Among the figure: 1, superconducting coil; 2, low-temperature (low temperature) vessel; 3, first cooling agent; 4, vacuum cavity; 5, incubation cavity; 6, second cooling agent; 7, thermal radiation.
Embodiment
With reference to Fig. 1, comprise superconducting coil 1 and low-temperature (low temperature) vessel 2 in the structure of the present utility model, be filled with first cooling agent 3 in the low-temperature (low temperature) vessel 2, superconducting coil 1 is arranged in first cooling agent 3, in described low-temperature (low temperature) vessel 2 arranged outside vacuum cavity 4 is arranged, in vacuum cavity 4 arranged outside incubation cavity 5 is arranged, be filled with second cooling agent 6 in the incubation cavity 5; Described superconducting coil 1 adopts high-temperature superconductor bi tape material to make, and the temperature of described first cooling agent 3 is lower than the temperature of second cooling agent 6, and the temperature of second cooling agent 6 is lower than the critical temperature of described superconducting coil 1.
It should be noted that described first cooling agent 3 adopts liquid helium, described second cooling agent 6 adopts liquid nitrogen.
It should be noted that in the described vacuum cavity 4 and be provided with thermal radiation 7.
In addition, the utility model also provides a kind of MR imaging apparatus, comprises aforesaid superconducting magnet apparatus.
Operation principle of the present utility model is:
Filled with liquid nitrogen in the vacuum cavity 4 outer incubation cavities that arrange 5, make the temperature of vacuum cavity 4 inside and outside both sides all be lower than the critical temperature of superconducting coil 1, guaranteed when vacuum cavity 4 heat-blocking actions reduce, can not cause superconducting coil 1 to produce " quench " phenomenon owing to external heat imports low-temperature (low temperature) vessel 2 into yet.
More than show and described basic principle of the present utility model and principal character and advantage of the present utility model.The technical staff of the industry should understand; the utility model is not restricted to the described embodiments; that describes in above-described embodiment and the specification just illustrates principle of the present utility model; under the prerequisite that does not break away from the utility model spirit and scope; the utility model also has various changes and modifications, and these changes and improvements all fall in claimed the utility model scope.The claimed scope of the utility model is defined by appending claims and equivalent thereof.
Claims (4)
1. a superconducting magnet apparatus and MR imaging apparatus comprise superconducting coil (1) and low-temperature (low temperature) vessel (2) in the structure, are filled with first cooling agent (3) in the low-temperature (low temperature) vessel (2), and superconducting coil (1) is arranged in first cooling agent (3), it is characterized in that:
In described low-temperature (low temperature) vessel (2) arranged outside vacuum cavity (4) is arranged, in vacuum cavity (4) arranged outside incubation cavity (5) is arranged, be filled with second cooling agent (6) in the incubation cavity (5); Described superconducting coil (1) adopts high-temperature superconductor bi tape material to make, and the temperature of described first cooling agent (3) is lower than the temperature of second cooling agent (6), and the temperature of second cooling agent (6) is lower than the critical temperature of described superconducting coil (1).
2. superconducting magnet apparatus according to claim 1 and MR imaging apparatus is characterized in that:
Described first cooling agent (3) adopts liquid helium, and described second cooling agent (6) adopts liquid nitrogen.
3. superconducting magnet apparatus according to claim 1 and MR imaging apparatus is characterized in that:
Be provided with thermal radiation (7) in the described vacuum cavity (4).
4. a MR imaging apparatus and MR imaging apparatus is characterized in that:
Comprise each described superconducting magnet apparatus and MR imaging apparatus in the right 1 to 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145540 CN203118700U (en) | 2013-03-16 | 2013-03-16 | Superconducting magnet device and magnetic resonance imaging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320145540 CN203118700U (en) | 2013-03-16 | 2013-03-16 | Superconducting magnet device and magnetic resonance imaging device |
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| Publication Number | Publication Date |
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| CN203118700U true CN203118700U (en) | 2013-08-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 201320145540 Expired - Fee Related CN203118700U (en) | 2013-03-16 | 2013-03-16 | Superconducting magnet device and magnetic resonance imaging device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416867A (en) * | 2015-11-27 | 2016-03-23 | 云南电网有限责任公司电力科学研究院 | Container containing superconductive devices |
| CN109102985A (en) * | 2018-07-23 | 2018-12-28 | 中国科学院合肥物质科学研究院 | A kind of bullet train eddy-current brake superconducting magnet |
| CN109109670A (en) * | 2018-07-23 | 2019-01-01 | 中国科学院合肥物质科学研究院 | A kind of bullet train superconduction eddy-current brake |
| CN109250323A (en) * | 2018-07-23 | 2019-01-22 | 中国科学院合肥物质科学研究院 | A kind of train superconducting magnet liquid helium liquid nitrogen storage liquefaction composite tanks |
| CN115123695A (en) * | 2021-03-29 | 2022-09-30 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Vehicle-mounted refrigeration medium storage device and superconducting magnetic levitation train |
-
2013
- 2013-03-16 CN CN 201320145540 patent/CN203118700U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105416867A (en) * | 2015-11-27 | 2016-03-23 | 云南电网有限责任公司电力科学研究院 | Container containing superconductive devices |
| CN109102985A (en) * | 2018-07-23 | 2018-12-28 | 中国科学院合肥物质科学研究院 | A kind of bullet train eddy-current brake superconducting magnet |
| CN109109670A (en) * | 2018-07-23 | 2019-01-01 | 中国科学院合肥物质科学研究院 | A kind of bullet train superconduction eddy-current brake |
| CN109250323A (en) * | 2018-07-23 | 2019-01-22 | 中国科学院合肥物质科学研究院 | A kind of train superconducting magnet liquid helium liquid nitrogen storage liquefaction composite tanks |
| WO2020020168A1 (en) * | 2018-07-23 | 2020-01-30 | 中国科学院合肥物质科学研究院 | Superconducting magnet for eddy current braking of high-speed train |
| CN109102985B (en) * | 2018-07-23 | 2020-06-23 | 中国科学院合肥物质科学研究院 | Superconducting magnet for eddy current braking of high-speed train |
| CN109109670B (en) * | 2018-07-23 | 2021-06-29 | 中国科学院合肥物质科学研究院 | Superconducting eddy current brake for high-speed train |
| US11189410B2 (en) | 2018-07-23 | 2021-11-30 | Hefei Institutes Of Physical Science, Chinese Academy Of Sciences | Superconducting magnet for eddy-current braking for high-speed trains |
| CN115123695A (en) * | 2021-03-29 | 2022-09-30 | 中国航天科工飞航技术研究院（中国航天海鹰机电技术研究院） | Vehicle-mounted refrigeration medium storage device and superconducting magnetic levitation train |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130807 Termination date: 20140316 |