CN109887701A - A superconducting magnet cooling device for superconducting maglev train and using method - Google Patents
A superconducting magnet cooling device for superconducting maglev train and using method Download PDFInfo
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Abstract
本发明公开了一种用于超导磁悬浮列车的超导磁体冷却装置，包括低温制冷机、导冷片、冷却腔；所述导冷片一端连接所述低温制冷机，一端连接所述冷却腔；所述冷却腔内安装有超导磁体；所述冷却腔内设置与所述上端盖相连的导冷板；所述导冷板位于所述冷却腔内部的各超导磁体之间；所述导冷板紧贴所述冷却腔的内壁和各超导磁体；所述导冷板为导冷材料，所述导冷板与所述上端盖通过吊杆连接，所述导冷板在超导磁体的四周安装限位板，限制超导磁体的移动；所述限位板为导冷材料。本发明还公开了所述冷却装置的使用方法，通过直接传导制冷或固氮辅助制冷，兼顾了各种供电可靠性情况。本发明结构简单，且兼顾制冷能力和抗振性能，使用方法简单快捷。
The invention discloses a superconducting magnet cooling device for a superconducting magnetic levitation train, comprising a low temperature refrigerator, a cooling fin and a cooling cavity; one end of the cooling fin is connected to the low temperature refrigerator, and the other end is connected to the cooling cavity ; a superconducting magnet is installed in the cooling cavity; a cold-conducting plate connected to the upper end cover is arranged in the cooling cavity; the cold-conducting plate is located between the superconducting magnets in the cooling cavity; the The cold-conducting plate is closely attached to the inner wall of the cooling cavity and each superconducting magnet; the cold-conducting plate is made of a cold-conducting material, and the cold-conducting plate and the upper end cover are connected by a hanger rod, and the cold-conducting plate is in the superconducting state. A limit plate is installed around the magnet to limit the movement of the superconducting magnet; the limit plate is a cooling material. The invention also discloses a use method of the cooling device, which takes into account various power supply reliability conditions through direct conduction refrigeration or nitrogen-fixing auxiliary refrigeration. The present invention has a simple structure, and takes into account both the refrigeration capacity and the anti-vibration performance, and the use method is simple and quick.
Description
Technical field
The present invention relates to the super of the magnet cooling field of levitated superconducting magnet train more particularly to a kind of levitated superconducting magnet train
Magnetizer cooling device and application method.
Background technique
Magnetic levitation technology can effectively avoid contact bring frictional dissipation, be greatly improved the use of operational efficiency and equipment
Service life.By the Technology application on train, magnetic suspension train can be become.Magnetic suspension train has the speed of service fast, and noise is small,
The advantages such as maintenance cost is low, it has also become one of the main flow direction of bullet train development of new generation.The suspension of magnetic suspension train with push away
It is both needed to complete by the electromagnetic force between the magnet and ground magnet on car body into system.
Conventional maglev train generates electromagnetic force using permanent magnet or electromagnet and achievees the purpose that suspension and propulsion.It is traditional
Magnetic suspension train magnet apparatus is without refrigeration, but the volume of permanent magnet or electromagnet is big, and weight is big, results in the passenger capacity of train
It can not further be promoted with speed.Superconducting phenomenon was found in 1911, and since the good characteristics such as its zero resistance nature are fast
Speed worldwide obtains the concern of researchers.Superconducting magnet can be generated to be produced much larger than permanent magnet or conventional electromagnetic iron
Magnetisation field, and the light weight of superconducting magnet, small in size, the great potential in the application of magnetic suspension train.In superconducting magnet at first
The cryogenic magnet of application, the shortcomings that overcoming conventional maglev train, be can run on and are more than so that speed is further promoted
The speed of 600km/h.But due to the limitation of refrigeration machine technology, the magnet refrigeration of low-temperature superconducting magnetic suspension train is a disaster
Point.As the superconductor of more and more high-critical temperatures is found, superconductor development enters the high-temperature superconductor epoch.Currently,
The critical-temperature of high-temperature superconductor can achieve 92K, material can be made to enter superconducting state under liquid nitrogen environment.Compared to low
For temperature superconductive, high-temperature superconductor requires to substantially reduce to refrigeration, substantially reduces the application difficulty of superconductor.Currently, high temperature is super
It leads material and has been carried out industrial volume production, the superconducting tape of production can turn to superconducting magnet, and can generate conventional permanent magnet
Or the high-intensity magnetic field that electromagnet is unable to reach.Superconducting magnet ensure that magnet densification, light weight while having high-intensity magnetic field advantage
The characteristics of change.Research based on high-temperature superconducting magnet, compared to cryogenic magnet magnetic suspension train, high-temperature superconducting magnet suspends
The refrigeration demand that it can be overcome harsh of train, operating cost and the speed of service greatly improve, while operation stability and load
Volume of passenger traffic problem also can significantly improve.But high-temperature superconducting maglev train, also in development phase, really investment business is not transported
Row.
Therefore, those skilled in the art is dedicated to developing a kind of cooling dress of the superconducting magnet for levitated superconducting magnet train
It sets and application method, makes it possible to take into account requirement of a variety of refrigeration modes to vehicle-mounted power supply capacity, and can protect superconducting magnet
Flutter failure when from train operation.
Summary of the invention
In view of the above drawbacks of the prior art, the technical problem to be solved by the present invention is to how by reasonably setting
Meter, acquisition can take into account requirement of a variety of refrigeration modes to vehicle-mounted power supply capacity, guarantee superconduction while simplifying refrigeration modes
The safe and stable operation of magnet, and can protect flutter failure of the superconducting magnet from train operation when for super-conductive magnetic suspension
The superconducting magnet refrigerating mechanism and application method of train.
To achieve the above object, the present invention provides a kind of superconducting magnet refrigerating mechanism for levitated superconducting magnet train,
Including Cryo Refrigerator, cool guide sheet, cooling chamber；Described cool guide sheet one end connects the Cryo Refrigerator, and one end connection is described cold
But chamber；Superconducting magnet is installed in the cooling chamber.
Further, the Cryo Refrigerator makes the operating temperature of superconducting magnet be 20K-66K.
Further, the cooling chamber is enclosed construction, including cavity and upper end cover；The upper end cover is non-magnetic material
Material, the cavity material are the aluminum alloy materials of hard anodizing processing.
Further, the aluminum alloy materials are 6063 aluminium alloys.
Further, the upper end cover is 304 type stainless steels.
Further, the conduction cooling plate being connected with the upper end cover is also set up inside the cooling chamber；The conduction cooling plate is located at
Between each superconducting magnet inside the cooling chamber；The conduction cooling plate is close to the cooling cavity wall and each superconducting magnet；It is described
Conduction cooling plate is conduction cooling material.
Further, the conduction cooling plate is connect with the upper end cover by sunpender, surrounding of the conduction cooling plate in each magnet
It is also equipped with limit plate, limits the movement of superconducting magnet；The limit plate is conduction cooling material.
The invention also discloses the application methods of the cooling device, specifically includes the following steps:
Superconducting magnet is installed in cooling chamber by step 1, is closed cooling chamber and is vacuumized；
Step 2 opens Cryo Refrigerator, cooling cooling chamber is directly conducted by cool guide sheet, so that the superconducting magnet cold
But to operating temperature.
Further, the step 2 fills fixed nitrogen as coolant in the cooling chamber；The cool guide sheet passes through cooling
Chamber and the fixed nitrogen coolant, cooling superconducting magnets to operating temperature
Further, fill fixed nitrogen coolant process the following steps are included:
Step 2.1, the gas valve opening state for keeping cooling chamber inject liquid nitrogen to given liquid level in the cooling chamber
Highly；
Step 2.2 opens the Cryo Refrigerator, by the cooling cooling chamber of cool guide sheet and liquid nitrogen, until liquid nitrogen temperature
In 70K, the gas valve is closed.
Compared to the prior art, the invention has the following beneficial effects:
(1) refrigerating plant that the present invention designs, so that the refrigeration of high-temperature superconducting magnet simplifies and reliabilization；
(2) conduction cooling ability and vibrationproof performance have been taken into account by cool guide sheet and limit plate, conduction cooling ability and vibrationproof ability at
It is positively correlated, avoids the shortcomings that accepting or rejecting in the two；
(3) by direct conduction cooling or filling fixed nitrogen conduction cooling, it is applicable in the different magnetic suspension train of power supply reliability；Power supply is reliable
When, the weight of superconducting magnet cooling system is substantially reduced using direct conduction refrigeration；When powering unreliable, the higher ratio of fixed nitrogen
Thermal capacitance can continue to superconducting magnet work in the case where Cryo Refrigerator is unable to run.
It is described further below with reference to technical effect of the attached drawing to design of the invention, specific structure and generation, with
It is fully understood from the purpose of the present invention, feature and effect.
Detailed description of the invention
Fig. 1 is that the superconducting magnet refrigerating mechanism for levitated superconducting magnet train of a preferred embodiment of the invention is illustrated
Figure；
Fig. 2 is the cooling chamber schematic diagram of internal structure of embodiment illustrated in fig. 1；
Fig. 3 is the conduction cooling plate structural schematic diagram of another preferred embodiment of the invention；
Fig. 4 is that the superconducting magnet refrigerating mechanism for levitated superconducting magnet train of another preferred embodiment of the invention makes
With the test result figure of superconducting magnet vibration test in method.
Wherein, 1- Cryo Refrigerator；2- cool guide sheet；3- upper end cover；4- cavity；5- conduction cooling plate；6- superconducting magnet；7- limit
Plate；8- sunpender.
Specific embodiment
Multiple preferred embodiments of the invention are introduced below with reference to Figure of description, keep its technology contents more clear and just
In understanding.The present invention can be emerged from by many various forms of embodiments, and protection scope of the present invention not only limits
The embodiment that Yu Wenzhong is mentioned.
In the accompanying drawings, the identical component of structure is indicated with same numbers label, everywhere the similar component of structure or function with
Like numeral label indicates.The size and thickness of each component shown in the drawings are to be arbitrarily shown, and there is no limit by the present invention
The size and thickness of each component.Apparent in order to make to illustrate, some places suitably exaggerate the thickness of component in attached drawing.
Embodiment one
It is a preferred embodiment cooling device schematic diagram of the invention shown in Fig. 1, Fig. 2 is the interior of cooling chamber shown in Fig. 1
Portion's structure chart.
Cooling device shown in FIG. 1, including Cryo Refrigerator 1, cool guide sheet 2 and cooling chamber；2 one end of cool guide sheet connects low temperature
Refrigeration machine 1, one end connect the cooling chamber；Superconducting magnet 6 is installed in the cooling chamber.
The Cryo Refrigerator 1 of the present embodiment is directly connected to cool guide sheet 2, and cool guide sheet 2 is directly connected to the cooling chamber, by low temperature
The cooling capacity of refrigeration machine 1 is directly conducted to the cooling chamber, and structure is simple, and the work of superconducting magnet 6 is made suitable for Cryo Refrigerator 1
Make the fixed nitrogen warm area that temperature is 20K-66K.The stagnation temperature to work in view of existing refrigeration machine technical restriction and cryogenic magnet
Degree is lower than 20K, the case where being cryogenic magnet for superconducting magnet 6, the present invention can also by adding cool guide sheet 2 so that
The level-one cold head of a part of 2 one end of cool guide sheet connection Cryo Refrigerator 1, the other end connect the cooling chamber, another part conduction cooling
2 one end of piece penetrates the cooling chamber connection superconducting magnet 6, and the other end connects the second level cold head of Cryo Refrigerator 1.
For the cooling capacity for sufficiently transmitting Cryo Refrigerator 1, it is preferable that the oxygen-free copper or nothing of 2 material of cool guide sheet selection high-purity
Oxygen aluminium；According to the demand of the shape of cooling chamber 1 and practical conduction cooling effect, the quantity of cool guide sheet 2, and the contact with cooling chamber are selected
Position is such as distributed in cooling chamber distributing annular in shape or more in the cooling chamber surface configuration of 6 near sites of superconducting magnet
Cool guide sheet 2.
In the present embodiment, cool guide sheet 2 is the oxygen-free copper band by insulation impregnating.It should be noted that 2 use of cool guide sheet has
The conduction cooling material of certain cross section can be with structure made of being not limited to the braiding of conduction cooling band or stacking.
In view of ambient temperature is generally much higher than the critical-temperature of superconducting magnet 6, for reduce heat radiation and conduction or
Convective zone carrys out meaningless cooling loss or influences refrigeration effect, it is preferable that the cooling chamber is set as enclosed construction；To prevent from tying
Structure generates vortex under the action of being connected with superconducting magnet 6 of larger current, and convenient for manufacture craft, it is preferable that closed cold
But chamber includes upper end cover 3 and cavity 4, and upper end cover 3 is non-magnet material, and cavity 4 is the aluminium alloy of hard anodizing processing
Material.
In the present embodiment, the aluminum alloy materials of cavity 4 are 6063 aluminium alloys；6063 aluminium alloy good insulation preformances, and
And (20K-66K) has good thermal conductivity at low temperature, therefore when transmitting cooling capacity, entire cavity 4 can uniform decrease in temperature；Upper end
Lid 3 selects 304 low magnetic permeability stainless, generates interference to avoid the magnetic field to superconducting magnet 6.
In actual use, 6 volume and weight of superconducting magnet is larger, and cooling technology limitation at present leads to cryocooler 1
Power limited is often up to a few hours to a couple of days the cooling time needed before putting back into after initially using and repair, and
Cost expends quite big train and needs higher frequency of use that could reduce cost or profit.To further increase cooling effect
Fruit reduces the cooling time of superconducting magnet 6, it is preferable that several conduction coolings being connected with upper end cover 3 are also set up inside the cooling chamber
Plate 5；Conduction cooling plate 5 is located between each superconducting magnet 6 inside the cooling chamber；Conduction cooling plate 5 is close to the cooling cavity wall and each
Superconducting magnet 6；Conduction cooling plate 5 is conduction cooling material.
Similarly, consider easily manufactured, the insulating properties of conduction cooling material and the heat transfer under 6 critical-temperature of superconducting magnet
Property, it is preferable that conduction cooling plate 5 selects the aluminum alloy materials after hard anodizing.
As shown in Fig. 2, the superconducting magnet 6 in cavity 4 is divided to for two groups of left and right, and every group 4, totally 8 superconducting magnets 6.It is each super
Conduction cooling plate 5 is accompanied between magnetizer 6 as cold source.Conduction cooling plate 5 is made by 6063 aluminum alloy materials after hard anodizing.It should
Design can ensure that each superconducting magnet 6 keeps compact structure while obtaining refrigeration.Meanwhile conduction cooling plate 5 and 4 inner wall of cavity
It is close to, guarantees that the cooling capacity of Cryo Refrigerator 1 can be uniformly transmitted on cavity 4 by cool guide sheet 2, and further conduction cooling plate
5, finally cool down each superconducting magnet 6.
To further decrease the influence of external environment heat radiation, heat exchange to cooling device, it is preferable that outside the cooling chamber
If dry foam radiation shield or vacuum (-tight) housing can also be arranged.
Embodiment two
Fig. 3 show the hardened structure of conduction cooling of another preferred embodiment of the present invention.
In view of in the magnetic suspension train traveling process applied of the present invention and train de-orbits and suspension and restores to rail
It is inevitably vibrated when road, to prevent vibration so that superconducting magnet 6 is displaced in cooling chamber, conventional method passes through all kinds of
Magnet in the fixed magnetic suspension train of fixed structure.But conventional method, the number of structures and quality of the fixed magnet are positively correlated,
And excessive overweight fixed structure, the heat dissipation effect of superconducting magnet 6 was not only influenced, but also weight loading can be increased to train, so that column
The decline of vehicle operational efficiency, and the speed of service and passenger capacity are also corresponding impacted.For the vibration problem and magnetic for solving magnetic suspension train
The problem of fixation device and refrigeration effect contradiction of body vibration proof, it is preferable that conduction cooling plate 5 is connect with upper end cover 3 by sunpender 8,
Conduction cooling plate 5 is also equipped with limit plate 7 in the surrounding of each superconducting magnet 6, limits the movement of superconducting magnet 6；And limit plate 7 is conduction cooling
Material.To avoid the use of limit plate 7 from influencing the heat dissipation effect of superconducting magnet 6, it is preferable that limit plate 7 is close to cooling cavity wall.
In the present embodiment, by the way of the installation of interval, 5 top of conduction cooling plate uses sunpender branch for superconducting magnet 6 and conduction cooling plate 5
Support, side is then the limit plate 7 using 6063 aluminium alloys, therefore can prevent superconducting magnet 6 because of vibration in three directions of motion
It moves and is displaced.Limit plate 7 is close to the cooling cavity wall and superconducting magnet 6 is close to conduction cooling plate, effectively increases superconducting magnetic
The fitting area of body 6 and conduction cooling plate 5 reduces the quantity of the hanging component of superconducting magnet 6, had both reduced magnetic suspension train operation process
Amplification of the middle superconducting magnet 6 to vibration acceleration ensure that the mechanical safety of magnet, and further enhancing is to superconducting magnet
Refrigeration effect.In addition, using the conduction cooling plate 5 and limit plate 7 of aluminum material, in the base for guaranteeing insulating properties and good guide temp energy
On plinth, moreover it is possible to so that the entire cooling chamber 3 is compact, total weight is lighter.
In view of sunpender 8 needs there are certain moment properties in low temperature environment (20K-66K), and need to insulate and low magnetic conduction
Rate is non-magnetic, it is preferable that sunpender 8 selects expoxy glass Steel material.
Embodiment three
The cooling dress of superconducting magnet of levitated superconducting magnet train of the invention is described in detail by specific experiment in the present embodiment
The application method set.
Superconducting magnet is installed in cooling chamber by step 1, is closed cooling chamber and is vacuumized；
Step 2 opens Cryo Refrigerator, cooling cooling chamber is directly conducted by cool guide sheet, so that the superconducting magnet cold
But to operating temperature.
In step 1, the cooling chamber after the closing for installing superconducting magnet 6 is vacuumized first, avoids condensation vapor.Wait take out
After complete vacuum, Cryo Refrigerator 1 is opened, is in close contact by some column of cool guide sheet 2, the cooling chamber and superconducting magnet 6, it will
Cooling capacity is transferred to superconducting magnet 6, until superconducting magnet 6 is cooled to operating temperature or less.The refrigeration modes are simple and fast, while can be big
Mitigate the weight entirely filled greatly, be highly suitable in the facility to weight sensitive, but power supply of the which for magnetic suspension train
Reliability is higher.For the not high train of power supply reliability, it is preferable that selection carries out auxiliary system by filling fixed nitrogen in cooling chamber
It is cold.Fixed nitrogen fusing point is 66K, and fusing point is lower than the highest in highest critical-temperature (92K) and the suitable operation of high-temperature superconducting magnet
It is recommended that temperature (77K).Fixed nitrogen is filled in cooling chamber as coolant, is more advantageous to comprehensive Contact Superconducting magnet 6, compared to
Direct conduction cooling increases conduction cooling performance, additionally it is possible to buffering when vibration is further provided for superconducting magnet 6；In addition, fixed nitrogen is higher
Specific heat capacity have certain heat sink, additional cold source can be provided in short-term in 1 refrigerating capacity deficiency of Cryo Refrigerator, avoided low
Warm refrigeration machine 1 quenches superconducting magnet 6.
Processing temperature is lower when directly filling in view of fixed nitrogen, and it is insufficient to fill the uniformity, and directly fills liquid nitrogen, then
When cooling down liquid nitrogen to fixed nitrogen again, excessive liquid nitrogen of filling is easy to cooling chamber sealing requirements height, and be easy to cause the shape of cooling chamber
Become (such as dilatancy), and mistake amount of liquid nitrogen deficiency will lead to final fixed nitrogen and cannot fill full cooling chamber.To solve described problem,
The present embodiment, which is used, solves above-mentioned deficiency by the way that gas valve is arranged on cooling chamber, specifically comprises the following steps:
Step 2.1, the gas valve opening state for keeping cooling chamber inject liquid nitrogen to given liquid level in the cooling chamber
Highly；
Step 2.2 opens the Cryo Refrigerator, by the cooling cooling chamber of cool guide sheet and liquid nitrogen, until liquid nitrogen temperature
In 70K；Close the gas valve.
In addition, being initially injected the liquid nitrogen of certain liquid level in cooling chamber, superconducting magnet 6 is immersed into the lower liquid nitrogen of temperature (mark
Nitrogen boiling point 77K under quasi- atmospheric pressure), be conducive to the rapid cooling of superconducting magnet 6；And low temperature liquid nitrogen can be stored and be made in advance
It is standby, be conducive to the maintenance time for saving the cooling of magnetic suspension train magnet.Liquid nitrogen is 77K when just having poured into cooling chamber, and gas-liquid is total at this time
It deposits, opening gas valve also prevents nitrogen expansion from exploding；When liquid nitrogen is cooled to 70K, it is pure liquid nitrogen, closes breather valve at this time
Door not will lead to cooling chamber expansion, can also reduce loss of refrigeration capacity.Then, in the case where gas valve is closed, liquid nitrogen continues cold
But to 66K solidification and lower temperature
To further illustrate that limit plate 7 of the invention acts on the Vibrant buffer of superconducting magnet 6, the present embodiment is also built
Hardware platform has carried out actual tests, and experimental result is as shown in Figure 4.
In the present embodiment, cooling device includes Cryo Refrigerator 1, the cool guide sheet 2 of oxygenless copper material, low permeability stainless steel
The limit plate 7 of the conduction cooling plate 5 of the upper end cover 3 of material and the cavity 4 of aluminum alloy materials and aluminum alloy materials, aluminum alloy materials
With sunpender 8；Superconducting magnet 6 in cavity 4 is divided to for two groups of left and right, and every group 4, totally 8 superconducting magnets 6；Superconducting magnet 6 and conduction cooling
Plate 5 is by the way of the installation of interval, and 5 top of conduction cooling plate uses boom rest, and side is then the limit plate using 6063 aluminium alloys
7；Limit plate 7 and conduction cooling plate 5 are close to superconducting magnet 6 and cavity 4.Vibration acceleration ratio under similarity condition, under normal temperature condition
Using directly conduction is cooling or fixed nitrogen assisted refrigeration refrigeration modes are more violent.Sufficiently to prove vibration of the limit plate 7 to superconducting magnet 6
Dynamic buffer function, the present embodiment is the test implemented under normal temperature conditions.
In Fig. 4, curve 1 be there are the vibration acceleration at various frequencies of superconducting magnet 6 when conduction cooling plate 5 and limit plate 7,
Experimental result when curve 2 is no conduction cooling plate 5 and limit plate 7.From fig. 4, it can be seen that be 15g in reference vibration acceleration,
Frequency is the vibration (operating condition of high-speed maglev train) of 5~350Hz, when there are conduction cooling plate 5 and limit plates 7 and superconducting magnetic
When body 6 is bonded, superconducting magnet 6 is much smaller than the case where not being bonded to the amplification of vibration acceleration.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that the ordinary skill of this field is without wound
The property made labour, which according to the present invention can conceive, makes many modifications and variations.Therefore, all technician in the art
Pass through the available technology of logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea
Scheme, all should be within the scope of protection determined by the claims.
Claims (10)
1. a kind of superconducting magnet refrigerating mechanism for levitated superconducting magnet train, which is characterized in that including Cryo Refrigerator, conduction cooling
Piece, cooling chamber；Described cool guide sheet one end connects the Cryo Refrigerator, and one end connects the cooling chamber；Peace in the cooling chamber
Equipped with superconducting magnet.
2. being used for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as described in claim 1, which is characterized in that described low
Warm refrigeration machine makes the operating temperature of superconducting magnet be 20K-66K.
3. being used for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 2, which is characterized in that described cold
But chamber is enclosed construction, including cavity and upper end cover；The upper end cover is non-magnet material, and the cavity material is hard anode
The aluminium alloy of oxidation processes.
4. being used for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 3, which is characterized in that the aluminium
Alloy material is 6063 aluminium alloys.
5. being used for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 3, which is characterized in that on described
End cap is 304 type stainless steels.
6. being used for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 3, which is characterized in that described cold
Intracavitary portion also sets up the conduction cooling plate being connected with the upper end cover；The conduction cooling plate is located at each superconducting magnetic inside the cooling chamber
Between body；The conduction cooling plate be close to the cooling chamber inner wall and each superconducting magnet；The conduction cooling plate is conduction cooling material.
7. being used for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 6, which is characterized in that described to lead
Cold plate is connect with the upper end cover by sunpender, and the conduction cooling plate is also equipped with limit plate in the surrounding of superconducting magnet, and limitation is super
The movement of magnetizer；The limit plate is conduction cooling material.
8. the application method of the superconducting magnet refrigerating mechanism for levitated superconducting magnet train as described in claim 1-7 is any,
It is characterized in that, the described method comprises the following steps:
Superconducting magnet is installed in cooling chamber by step 1, is closed cooling chamber and is vacuumized；
Step 2 opens Cryo Refrigerator, and cooling cooling chamber is directly conducted by cool guide sheet, so that the superconducting magnet is cooling extremely
Operating temperature.
9. the application method for the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 8, feature
It is, the step 2 fills fixed nitrogen as coolant in the cooling chamber；The cool guide sheet passes through cooling chamber and the fixed nitrogen
Coolant, cooling superconducting magnets to operating temperature.
10. a kind of application method of the superconducting magnet refrigerating mechanism of levitated superconducting magnet train as claimed in claim 9, feature
Be, fill fixed nitrogen coolant process the following steps are included:
It is high to given liquid level to inject liquid nitrogen in the cooling chamber for step 2.1, the gas valve opening state for keeping cooling chamber
Degree；
Step 2.2 opens the Cryo Refrigerator, by the cooling cooling chamber of cool guide sheet and liquid nitrogen, until liquid nitrogen temperature in
70K closes the gas valve.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112509778A (en) * | 2020-10-29 | 2021-03-16 | 中国科学院合肥物质科学研究院 | High-temperature superconducting magnet device for superconducting maglev train and use method |
| CN115727562A (en) * | 2022-11-28 | 2023-03-03 | 中车长春轨道客车股份有限公司 | a refrigeration system |
| WO2023087383A1 (en) * | 2021-11-19 | 2023-05-25 | 中车长春轨道客车股份有限公司 | Superconducting magnet apparatus and superconducting magnetic levitation train |
| US20240359714A1 (en) * | 2023-10-12 | 2024-10-31 | Southwest Jiaotong University | Cryostat device for superconducting magnetic levitation train and operation method thereof |
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| WO2023087383A1 (en) * | 2021-11-19 | 2023-05-25 | 中车长春轨道客车股份有限公司 | Superconducting magnet apparatus and superconducting magnetic levitation train |
| CN115727562A (en) * | 2022-11-28 | 2023-03-03 | 中车长春轨道客车股份有限公司 | a refrigeration system |
| US20240359714A1 (en) * | 2023-10-12 | 2024-10-31 | Southwest Jiaotong University | Cryostat device for superconducting magnetic levitation train and operation method thereof |
| US12202352B2 (en) * | 2023-10-12 | 2025-01-21 | Southwest Jiaotong University | Cryostat device for superconducting magnetic levitation train and operation method thereof |
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