CN113232516A - High-temperature superconducting strip stacking magnetic levitation system with high guiding performance - Google Patents
High-temperature superconducting strip stacking magnetic levitation system with high guiding performance Download PDFInfo
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- CN113232516A CN113232516A CN202110726327.7A CN202110726327A CN113232516A CN 113232516 A CN113232516 A CN 113232516A CN 202110726327 A CN202110726327 A CN 202110726327A CN 113232516 A CN113232516 A CN 113232516A
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- 238000005339 levitation Methods 0.000 title claims description 20
- 239000002887 superconductor Substances 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims abstract description 11
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims description 17
- 230000005415 magnetization Effects 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 8
- 230000005405 multipole Effects 0.000 claims description 4
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 2
- 239000000725 suspension Substances 0.000 abstract description 8
- 230000007547 defect Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 2
- 238000009826 distribution Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 239000013590 bulk material Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000003491 array Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L13/00—Electric propulsion for monorail vehicles, suspension vehicles or rack railways; Magnetic suspension or levitation for vehicles
- B60L13/04—Magnetic suspension or levitation for vehicles
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N15/00—Holding or levitation devices using magnetic attraction or repulsion, not otherwise provided for
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L2200/00—Type of vehicles
- B60L2200/26—Rail vehicles
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- Superconductors And Manufacturing Methods Therefor (AREA)
Abstract
The invention discloses a high-guiding-performance high-temperature superconducting strip stacking magnetic suspension system, which comprises a cold source, a superconductor array and a magnetic field source, wherein the cold source is arranged on the superconductor array; the superconductor arrangement is comprised of a plurality of stacks of superconducting tapes; the cold source and the superconductor arrangement are sequentially arranged above the magnetic field source from top to bottom, the cold source cools the superconductor arrangement, and the magnetic field source provides an application external magnetic field; the superconducting tape stacking body adopts curved surface stacking or plane stacking, and when the superconducting tape stacking body adopts curved surface stacking, the stacking curved surface is arranged along a magnetic field streamline in the region; when the superconducting tape stacked body adopts plane stacking, the stacking plane is arranged along the streamline of the magnetic field in the region through the combination of horizontal, vertical and inclined stacking. The invention overcomes the defects of difficult use and processing, low efficiency, limited guiding performance of horizontal and vertical stacking bodies of superconducting strips and the like when the superconducting bulk materials are vertically arranged. Under the condition of not increasing the self weight and the cost of the system, the system realizes excellent guiding performance.
Description
Technical Field
The invention relates to the field of application of a high-temperature superconducting magnetic levitation technology, in particular to a high-temperature superconducting tape stacking magnetic levitation system with high guiding performance.
Background
The high-temperature superconducting magnetic suspension system has self-stabilizing suspension and guiding capability, and the theoretical maximum running speed of the translation system can reach 3000 km/h, so the high-temperature superconducting magnetic suspension system has wide application prospect in a ground ultra-high speed transportation system. However, the guidance performance of the high-temperature superconducting magnetic levitation system is relatively weak, and the key for the realization of the high-temperature superconducting magnetic levitation system is to improve the guidance performance. The prior art mainly comprises:
1. as shown in fig. 1, the related patent publication discloses that the system can obtain higher guidance performance by disposing the C-axis (22, 29) of the horizontal or vertical superconducting blocks perpendicular to the magnetization direction of the facing magnets. However, in practical applications, the superconducting block is generally horizontally disposed and has its seed point 23 facing the permanent magnet track 3, and its guiding performance tends to be saturated when its thickness exceeds about 10 mm. When the superconducting block is vertically arranged for use, on one hand, the superconducting block needs to be machined, and the superconducting block is a ceramic material at normal temperature, so that the machining is easy to damage, and the performance is reduced or damaged; on the other hand, when the perpendicular magnetization magnet region is wider (more than 10 mm), the use efficiency of the superconducting bulk material is reduced, and the combination of a plurality of superconductors is vertically arranged for use, so that the mechanical processing is needed, and the use amount of the superconducting material is increased, thereby bringing higher cost.
2. As shown in fig. 2, the related art reports that the system can obtain higher guidance performance by disposing the C-axes (25, 27) of the vertical or horizontal stacks of superconducting tapes perpendicular to the magnetization direction of the facing magnets. From the viewpoint of material properties, the superconducting tape stack has higher magnetic levitation properties than the superconducting bulk, but the related patent publication discloses that the properties thereof have high correlation with the orientation of the tape stack with respect to the spatial magnetic field, as shown in fig. 3, since the distribution of the magnetic field outside the permanent magnet track is not simple horizontal and vertical distributions, it is difficult to obtain superior guidance properties to the superconducting bulk combination by the combination of the horizontal stacking and the vertical stacking of the superconducting tapes.
3. Other techniques also include: the working temperature of the system is reduced by a nitrogen fixation cooling or refrigerating machine, and the critical current density and the capacity of capturing magnetic flux of the system are improved by adopting methods such as a high-performance superconducting material, increasing the using amount of the superconducting material and the like; the application external magnetic field strength of the permanent magnet track is improved by increasing the using amount and the residual magnetism of the permanent magnet material, optimizing the configuration of the permanent magnet track and the like. The method mainly enables the system to obtain higher guidance performance by improving material performance, increasing material consumption and optimizing the system, and meanwhile, higher self weight and high cost are brought.
Disclosure of Invention
In order to overcome the defects that the superconducting bulk material is vertically arranged, is difficult to process, has low efficiency, has limited guiding performance of a superconducting strip stacking magnetic suspension system and the like in the prior art, the invention provides the high-temperature superconducting strip stacking magnetic suspension system with high guiding performance, and the system obtains excellent guiding performance under the conditions of not increasing the self weight and the cost of the system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a high-temperature superconducting strip stacking magnetic suspension system with high guiding performance comprises a cold source, a superconductor array and a magnetic field source; the superconductor arrangement is comprised of a plurality of stacks of superconducting tapes; the cold source and the superconductor arrangement are sequentially arranged above the magnetic field source from top to bottom, the cold source cools the superconductor arrangement, and the magnetic field source provides an application external magnetic field; the superconducting tape stacking body adopts curved surface stacking or plane stacking, and when the superconducting tape stacking body adopts curved surface stacking, the stacking curved surface is arranged along a magnetic field streamline in the region; when the superconducting tape stacked body adopts plane stacking, the stacking plane is arranged along the streamline of the magnetic field in the region through the combination of horizontal, vertical and inclined stacking.
Furthermore, ReBaCuO strip or other superconducting material strips are stacked along a circular arc surface, a horizontal surface, a vertical surface or any other curved surface or inclined plane, different stack thicknesses are set by controlling the number of stacked layers, and Re is a rare earth element.
Further, when the superconducting tape stacked body is stacked on a curved surface, the arc stacked body is arranged right above the magnetic field source of the horizontal magnetization and is arranged in a transverse cascade arrangement mode.
Further, when the superconducting tape stacked body is stacked in a plane, the horizontal stacked body is arranged right above the magnetic field source of horizontal magnetization, the right inclined stacked body and the left inclined stacked body are respectively arranged on two sides of the horizontal stacked body, and the vertical stacked body is arranged right above the magnetic field source of vertical magnetization.
Furthermore, the cold source is provided by a normal pressure liquid nitrogen or low pressure nitrogen fixation low temperature container and a refrigerator, and the superconductor is directly or indirectly cooled by the liquid nitrogen, the nitrogen fixation and the cold head.
Further, the magnetic field source is a single magnet combined structure or a combined structure of any two or more than two of permanent magnets, electromagnets, superconducting wires or strip coil magnets.
Furthermore, when the magnetic field source is assembled by adopting the permanent magnet units, the transverse structure of the magnetic field source is arranged in a mode of horizontal opposite vertex arrangement of magnetic poles or Halbach array, and a single-pole or multi-pole permanent magnet track is formed.
Compared with the prior art, the invention has the beneficial effects that: the defects that the vertical arrangement of the superconducting bulk material is difficult to use and process, the efficiency is low, the guiding performance of the horizontal and vertical stacking bodies of the superconducting tape is limited and the like are overcome. Under the condition of not increasing the self weight and the cost of the system, the system realizes excellent guiding performance.
Drawings
The description of the drawings, which is intended as a further supplement to the description of the invention and not as a limitation of the embodiments of the invention, is:
FIG. 1 is a schematic view of a superconducting bulk material having a C-axis perpendicular to a magnetization direction;
fig. 2 is a schematic view in which the C-axis of the superconducting tape stack is arranged perpendicular to the magnetization direction;
FIG. 3 is a schematic diagram of the distribution of the streamline of the external magnetic field of the permanent magnet track;
FIG. 4 is a schematic view of a curved surface stacking magnetic levitation system for superconducting tapes;
FIG. 5 is a schematic view of a planar stacking magnetic levitation system for superconducting tapes;
names of reference numbers in the drawings:
1-cold source, 2-superconductor arrangement, 21-horizontal superconducting block, 22-horizontal superconducting block C axis, 23-superconducting block seed point, 24-superconducting tape vertical stack, 25-superconducting tape vertical stack C axis, 26-superconducting tape horizontal stack, 27-superconducting tape horizontal stack C axis, 28-vertical superconducting block, 29-vertical superconducting block C axis, 210-superconducting tape arc stack, 211-superconducting tape right inclined stack, 212-superconducting tape left inclined stack, 3-permanent magnet track, 31-horizontal magnetized magnet, 32-vertical magnetized magnet.
Detailed Description
It is reported that by arranging the horizontal stacks of superconducting tapes directly above the vertical and horizontal magnetized magnets, respectively, higher levitation and guidance forces can be obtained, respectively, but the performance is still lower than that of a magnetic levitation system composed of superconducting blocks of the same specification, because the applied external magnetic field above the permanent magnet track is not simply horizontal and vertical distribution, and the performance of the stacks of superconducting tapes has high orientation with respect to the space magnetic field. In the reports of related patents, the superconducting tapes are stacked along a scalar magnetic potential curve of a magnetic field, namely a magnetic field streamline is vertical to the stacking surface of the tapes, so that the system can obtain excellent suspension performance, and complete theoretical analysis and simulation experiment data are provided. Thus, it is presumed from the above-mentioned documents and patents that the system can obtain excellent guidance performance by stacking the superconducting tapes along the streamline of the magnetic field in the region where the superconducting tapes are placed, that is, by making the scalar magnetic potential curve of the magnetic field perpendicular to the stacking surface of the tapes.
Based on the above thought, the invention adopts the following scheme:
example 1:
as shown in fig. 4, the superconducting tape curved surface stacking magnetic levitation system comprises a cold source 1, a superconductor array 2, and a magnetic field source 3 sequentially arranged from top to bottom. The superconductor arrangement 2 is composed of a plurality of superconductor tape stacks, the superconductor arrangement 2 is cooled by the cold source 1, and the magnetic field source 3 provides an applied external magnetic field. When the superconducting tape material stacking body is stacked by adopting a curved surface, the stacking curved surface is arranged along the magnetic field streamline of the area, so that the system can obtain excellent guiding performance.
Preferably, when the superconducting tape stacked body is a curved surface stacked body, according to the schematic diagram of the streamline distribution of the external magnetic field of the permanent magnet track as shown in fig. 3, the superconducting tape arc stacked body 210 is arranged right above the horizontal magnetized magnet 31 and arranged in a transverse cascade manner;
preferably, the cold source 1 is provided by a normal pressure liquid nitrogen or low pressure nitrogen fixation low temperature container and a refrigerator, and the superconductor arrangement 2 is directly or indirectly cooled by the liquid nitrogen, the nitrogen fixation and a cold head;
preferably, the magnetic field source 3 is a single magnet combined structure of a permanent magnet, an electromagnet, a superconducting wire (tape) coil magnet or a combined structure of any two or more;
preferably, when the magnetic field source 3 is assembled using permanent magnet units, its transverse configuration is arranged with the poles horizontally disposed or Halbach arrays, forming a single or multi-pole permanent magnet track.
Example 2:
as shown in fig. 5, the superconducting tape planar stacking magnetic levitation system includes a cold source 1, a superconductor array 2, and a magnetic field source 3 sequentially arranged from top to bottom. The superconductor arrangement 2 is composed of a plurality of superconductor tape stacks, the superconductor arrangement 2 is cooled by the cold source 1, and the magnetic field source 3 provides an applied external magnetic field. When the superconducting tape stacking body adopts plane stacking, the stacking planes are arranged along the magnetic field streamline of the area through horizontal, vertical and inclined stacking combination, so that the system can obtain excellent guiding performance.
Preferably, when the superconducting tape stack is a planar stack, according to the schematic diagram of the streamline distribution of the external magnetic field of the permanent magnet track as shown in fig. 3, the superconducting tape horizontal stack 26 is disposed right above the horizontal magnetized magnet 31, the superconducting tape right-inclined stack 211 and the superconducting tape left-inclined stack 212 are disposed on both sides, and the superconducting tape vertical stack 24 is disposed right above the vertical magnetized magnet;
preferably, the cold source 1 is provided by a normal pressure liquid nitrogen or low pressure nitrogen fixation low temperature container and a refrigerator, and the superconductor arrangement 2 is directly or indirectly cooled by the liquid nitrogen, the nitrogen fixation and a cold head;
preferably, the magnetic field source 3 is a single magnet combined structure of a permanent magnet, an electromagnet, a superconducting wire (tape) coil magnet or a combined structure of any two or more;
preferably, when the magnetic field source 3 is assembled using permanent magnet units, its transverse configuration is arranged with the poles horizontally disposed or Halbach arrays, forming a single or multi-pole permanent magnet track.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (7)
1. The utility model provides a high temperature superconducting tape of high guidance quality piles up magnetic levitation system which characterized in that: it comprises a cold source, a superconductor arrangement and a magnetic field source; the superconductor arrangement is comprised of a plurality of stacks of superconducting tapes; the cold source and the superconductor arrangement are sequentially arranged above the magnetic field source from top to bottom, the cold source cools the superconductor arrangement, and the magnetic field source provides an application external magnetic field; the superconducting tape stacking body adopts curved surface stacking or plane stacking, and when the superconducting tape stacking body adopts curved surface stacking, the stacking curved surface is arranged along a magnetic field streamline in the region; when the superconducting tape stacked body adopts plane stacking, the stacking plane is arranged along the streamline of the magnetic field in the region through the combination of horizontal, vertical and inclined stacking.
2. The high-guidance-performance high-temperature superconducting tape stacking magnetic levitation system as claimed in claim 1, wherein: the stacking body of the superconducting strips is formed by stacking ReBaCuO strips or other superconducting materials along a circular arc surface, a horizontal plane, a vertical plane or any other curved surface or inclined plane, and different thicknesses of the stacking body are set by controlling the number of stacking layers, wherein Re is a rare earth element.
3. The high-guidance-performance high-temperature superconducting tape stacking magnetic levitation system as claimed in claim 1, wherein: when the superconducting tape stacked body is stacked on a curved surface, the arc stacked body is arranged right above the magnetic field source of the horizontal magnetization and is arranged in a transverse cascade mode.
4. The high-guidance-performance high-temperature superconducting tape stacking magnetic levitation system as claimed in claim 1, wherein: when the superconducting tape stacking body is stacked in a plane, the horizontal stacking body is arranged right above a magnetic field source of horizontal magnetization, a right inclined stacking body and a left inclined stacking body are respectively arranged on two sides of the horizontal stacking body, and the vertical stacking body is arranged right above a magnetic field source of vertical magnetization.
5. The high-guidance-performance high-temperature superconducting tape stacking magnetic levitation system as claimed in claim 1, wherein: the cold source is provided by a normal pressure liquid nitrogen or low pressure nitrogen fixation low temperature container and a refrigerator, and the superconductor arrangement is directly or indirectly cooled by the liquid nitrogen, the nitrogen fixation and the cold head.
6. The high-guidance-performance high-temperature superconducting tape stacking magnetic levitation system as claimed in claim 1, wherein: the magnetic field source is a single magnet combined structure or a combined structure of any two or more than two of permanent magnets, electromagnets, superconducting wires or strip coil magnets.
7. The high guidance performance high temperature superconducting tape stacking magnetic levitation system as claimed in claim 6, wherein: when the magnetic field source is assembled by adopting the permanent magnet units, the transverse structure of the magnetic field source is horizontally arranged in a butting mode according to magnetic poles or arranged in a Halbach array to form a single-pole or multi-pole permanent magnet track.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110726327.7A CN113232516A (en) | 2021-06-29 | 2021-06-29 | High-temperature superconducting strip stacking magnetic levitation system with high guiding performance |
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| CN202110726327.7A CN113232516A (en) | 2021-06-29 | 2021-06-29 | High-temperature superconducting strip stacking magnetic levitation system with high guiding performance |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717724A (en) * | 2012-06-25 | 2012-10-10 | 西南交通大学 | Method for improving performance of magnetic suspension system and magnetic suspension system thereof |
| CN103950391A (en) * | 2014-04-28 | 2014-07-30 | 西南交通大学 | High-temperature superconducting magnetic suspension vehicle system |
| WO2016017204A1 (en) * | 2014-07-31 | 2016-02-04 | 住友電気工業株式会社 | Superconducting wire rod |
| CN109887700A (en) * | 2019-04-15 | 2019-06-14 | 西南交通大学 | High-temperature superconductor band stackable unit and aligning method, Dewar, magnetic-levitation train and system |
| CN110356243A (en) * | 2019-08-02 | 2019-10-22 | 成都睿逸谷科技有限责任公司 | High-temperature superconducting magnetic levitation structure and high-temperature superconductor band magnetic suspension train |
| CN215662975U (en) * | 2021-06-29 | 2022-01-28 | 福建师范大学 | High-temperature superconducting strip stacking magnetic levitation system with high guiding performance |
-
2021
- 2021-06-29 CN CN202110726327.7A patent/CN113232516A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102717724A (en) * | 2012-06-25 | 2012-10-10 | 西南交通大学 | Method for improving performance of magnetic suspension system and magnetic suspension system thereof |
| CN103950391A (en) * | 2014-04-28 | 2014-07-30 | 西南交通大学 | High-temperature superconducting magnetic suspension vehicle system |
| WO2016017204A1 (en) * | 2014-07-31 | 2016-02-04 | 住友電気工業株式会社 | Superconducting wire rod |
| CN109887700A (en) * | 2019-04-15 | 2019-06-14 | 西南交通大学 | High-temperature superconductor band stackable unit and aligning method, Dewar, magnetic-levitation train and system |
| CN110356243A (en) * | 2019-08-02 | 2019-10-22 | 成都睿逸谷科技有限责任公司 | High-temperature superconducting magnetic levitation structure and high-temperature superconductor band magnetic suspension train |
| CN215662975U (en) * | 2021-06-29 | 2022-01-28 | 福建师范大学 | High-temperature superconducting strip stacking magnetic levitation system with high guiding performance |
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