CN110295519B - High-temperature superconductive magnetic levitation track with cooling system and magnetic levitation train operation method - Google Patents
High-temperature superconductive magnetic levitation track with cooling system and magnetic levitation train operation method Download PDFInfo
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- CN110295519B CN110295519B CN201910646466.1A CN201910646466A CN110295519B CN 110295519 B CN110295519 B CN 110295519B CN 201910646466 A CN201910646466 A CN 201910646466A CN 110295519 B CN110295519 B CN 110295519B
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- 238000005339 levitation Methods 0.000 title claims abstract description 75
- 238000001816 cooling Methods 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000007246 mechanism Effects 0.000 claims abstract description 10
- 239000002887 superconductor Substances 0.000 claims description 20
- 230000006698 induction Effects 0.000 claims description 9
- 239000000725 suspension Substances 0.000 claims description 7
- 230000005484 gravity Effects 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 6
- 229910000831 Steel Inorganic materials 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000005265 energy consumption Methods 0.000 description 3
- 230000017525 heat dissipation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000003993 interaction Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000005672 electromagnetic field Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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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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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B25/00—Tracks for special kinds of railways
- E01B25/30—Tracks for magnetic suspension or levitation vehicles
- E01B25/305—Rails or supporting constructions
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- Engineering & Computer Science (AREA)
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- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
The invention discloses a high-temperature superconductive magnetic levitation track with a cooling system, which comprises a track bottom plate (1), wherein train supporting structures are symmetrically arranged on two sides of the track bottom plate (1), each train supporting structure comprises a track beam (5) which is perpendicular to the track bottom plate (1), and a track surface (2) which is arranged on the top of the track beam (5) and is perpendicular to the track beam (5), a permanent magnet (3) is arranged on the top of the track surface (2), a driving mechanism is arranged between the track supporting structures, each driving mechanism comprises a linear motor rotor support (6) which is perpendicular to the track bottom plate (1), and a linear motor rotor (4) which is arranged on each linear motor rotor support (6). The invention also discloses a train operation method. The high-temperature superconductive magnetic levitation track can keep a levitation state on the track, and meanwhile, the train operation is controlled by controlling the train driving structure through the control system, so that the effect of accurate control is achieved.
Description
Technical Field
The invention belongs to the field of high-temperature superconductive magnetic levitation tracks, and particularly relates to a high-temperature superconductive magnetic levitation track with a cooling system and a magnetic levitation train operation method.
Background
At present, high-temperature superconductive magnetic levitation trains are developed at home and abroad. The magnetic levitation train is divided into a normal guiding type and a superconducting type, the normal guiding type adopts an electromagnetic levitation technology, and the levitation mechanism is based on attraction of a magnetic field generated after the electromagnet is electrified to an F rail to levitate the train, so that the normal magnetic levitation train is commercially used at home and abroad, such as airport magnetic levitation, long sand magnetic levitation and Beijing S1 line magnetic levitation. The superconductor is based on the interaction of the magnetic field generated by the superconductor in a low temperature state and the permanent magnet paved on the track to generate levitation force, which is essentially different from the ordinary levitation system. The high-temperature superconducting technology is currently under research and development at home and abroad, a scaled model is built by southwest China and China, a magnetic levitation track is paved by adopting the ground, and only low-speed passing is met at present. The test phase is also in foreign countries. When the high-temperature superconducting technology is applied to the environment, the theoretical speed of the train can reach 4000km/h, and along with the pursuit of people on the speed, the high-temperature superconducting magnetic levitation train has wide prospect, but the related complete technology is in a starting stage, and the high-temperature superconducting magnetic levitation track with a cooling system is also in a research stage.
The linear motor rotor in high-temperature superconductive magnetic suspension needs to continuously run for a long time when a train runs, and a large amount of heat energy can be generated by the long-time continuous running of the motor, so that the linear motor rotor is in a high-temperature state for a long time, the service life of the motor is shortened, and the energy consumption is increased. The invention develops a linear motor rotor support with a cooling function for a high-temperature superconductive magnetic levitation track, which can cool a linear motor rotor when the linear motor rotor runs and can be applied to a positive line, an auxiliary line, a vehicle section and a parking lot of a high-temperature superconductive magnetic levitation system line.
Disclosure of Invention
Aiming at the defects or improvement demands of the prior art, the invention provides the high-temperature superconductive magnetic levitation track with the cooling system and the magnetic levitation train operation method, wherein the train support structure provides upward supporting force for the train, so that the train can keep a levitation state on the track, the cooling and driving structure is controlled to provide driving force for the train and reduce the temperature of the linear motor rotor, and meanwhile, the control system controls the train driving structure to control the train to operate, so that the effect of accurate control is achieved.
In order to achieve the above object, according to one aspect of the present invention, there is provided a high temperature superconducting magnetic levitation track with a cooling system, comprising a track base plate,
the train supporting structures are symmetrically arranged on two sides of the track bottom plate and comprise track beams perpendicular to the track bottom plate and track surfaces which are arranged on the tops of the track beams and perpendicular to the track beams, the whole track beam structure is a concrete slab which is vertically arranged, and after the track bottom plate is paved, the concrete slab is poured on the track bottom plate and used as a supporting structure of the magnetic levitation train, the whole track surface structure is a cuboid plate structure and is horizontally and symmetrically arranged on the tops of the track beams and fixedly connected through bolts;
the top of the track surface is provided with a permanent magnet, and the structure and the shape of the permanent magnet are matched with those of the track surface to jointly form a track for the magnetic suspension train to travel;
the driving mechanism comprises a linear motor rotor support perpendicular to the track bottom plate and a linear motor rotor arranged on the linear motor rotor support, wherein the linear motor rotor is matched with a linear motor stator arranged at the bottom of the magnetic levitation train and the permanent magnet, supports the train to suspend to a certain height and drives the train to run.
Further, the whole rectangular structure of linear electric motor rotor support, its bottom has seted up the through-hole, is equipped with the cooling tube in this through-hole, and this cooling tube is for linear electric motor rotor cooling heat dissipation.
Further, the cooling pipes are round or square pipelines, two or more cooling pipes are arranged in rows in the through holes.
Further, a row of bolt through holes are formed in the inner side, close to the track beam, of the track bottom plate, and the bolt through holes are arranged in parallel with the track beam.
Further, the permanent magnet is integrally formed in a rectangular plate-like structure having the same cross section as the raceway surface, and is fixedly connected to the raceway surface by magnetic attraction.
According to another aspect of the present invention, there is provided a method of operating a magnetic levitation train, implemented using the high temperature superconducting magnetic levitation track with a cooling system, comprising the steps of:
s1: detecting the train and the high-temperature superconductive magnetic levitation track with the cooling system before the train runs, and then transferring the train to the high-temperature superconductive magnetic levitation track with the cooling system to finish preparation before departure;
s2: the high-temperature superconductor is cooled, so that the high-temperature superconductor and a permanent magnet arranged on a track surface generate opposite magnetic poles, and repulsive force is generated to offset the gravity direction of the train, so that the train is suspended on the track surface for a certain distance;
s3: after the train is suspended and kept stable, the magnetic field generated by the linear motor rotor interacts with the linear motor rotor arranged at the bottom of the train to generate electromagnetic force driving force to push the running and braking of the train, and meanwhile, the linear motor rotor is cooled and radiated through a cooling pipe arranged inside a linear motor rotor support;
s4: when the train is started, a gradually-amplified current is applied to the linear motor rotor, so that the linear motor rotor and the linear electronic rotor generate a gradually-increased forward driving force, and after the train stably runs, a smaller current is applied to the linear motor rotor, so that the forward driving force generated by the linear motor rotor and the induction plate can offset the resistance born by the running of the train, and the normal running of the train is ensured; when the train is about to enter a station, a gradually-reduced reverse current is applied to the linear motor rotor, so that the linear motor rotor and the induction plate generate a gradually-reduced backward driving force, and the train is helped to perform deceleration braking;
s5: after the train is braked slowly, the temperature of the high-temperature superconductor arranged on the train bottom plate is gradually increased, so that the high-temperature superconductor can slowly and stably descend until stopping is completed.
In general, the above technical solutions conceived by the present invention, compared with the prior art, enable the following beneficial effects to be obtained:
1. according to the high-temperature superconductive magnetic levitation track, upward supporting force is provided for the train through the train supporting structure, so that the train can keep a levitation state on the track, driving force is provided for the train through controlling the cooling and driving structure, the temperature of the linear motor rotor is reduced, meanwhile, the operation of the train is controlled through controlling the train driving structure through the control system, and the effect of accurate control is achieved.
2. The high-temperature superconductive magnetic levitation track has the advantages that the track surface is made of high-quality steel with good rigidity and strength, deformation and damage can not occur when the track surface bears the load of a train, and the safety and the reliability of the high-temperature superconductive magnetic levitation track with the cooling system are further improved.
3. The high-temperature superconductive magnetic levitation track provided by the invention has the advantages that the high-temperature superconductive arranged at the chassis position of the train and the permanent magnet arranged on the supporting structure of the train generate the same-level repulsive action when the train runs, so that the levitation force is generated to levitate the train, the running speed is prevented from being influenced by the contact friction between the train and the track, and the train can finish high-speed movement.
4. When the train stably runs, the linear motor rotor continuously works, and the driving mechanism is subjected to auxiliary heat dissipation through the cooling pipe, so that the motor is prevented from being in a high-temperature state for a long time, the service life of the motor is reduced, and the energy consumption is increased.
5. The method for operating the magnetic suspension train of the invention carries out cooling treatment on the high-temperature superconductor, so that the high-temperature superconductor and the permanent magnet arranged on the track surface generate opposite magnetic poles, generate repulsive force and offset the gravity direction of the train, thereby suspending the train at a certain height on the top of the track, and driving the train to run or brake by a linear motor, thus realizing the stable operation of the high-temperature superconductor magnetic suspension train.
Drawings
FIG. 1 is a schematic diagram of a three-dimensional model of a superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention;
FIG. 2 is a plan view of FIG. 1;
FIG. 3 is a schematic view of the cross-sectional structure A-A in FIG. 2;
FIG. 4 is a schematic view of a track bottom plate of a superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention;
FIG. 5 is a schematic view of a track surface of a superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention;
FIG. 6 is a schematic diagram of a permanent magnet of a superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a linear motor rotor with a cooling system for a superconductive magnetic levitation track according to an embodiment of the present invention;
FIG. 8 is a schematic view of a track beam of a superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of a linear motor support for a superconducting magnetic levitation track with a cooling system according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a cooling tube for a high temperature superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention.
Like reference numerals denote like technical features throughout the drawings, in particular: the device comprises a 1-track bottom plate, a 2-track surface, a 3-permanent magnet, a 4-linear motor rotor, a 5-track beam, a 6-linear motor rotor support and a 7-cooling pipe.
Detailed Description
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention. In addition, the technical features of the embodiments of the present invention described below may be combined with each other as long as they do not collide with each other.
FIG. 1 is a schematic diagram of a three-dimensional model of a superconductive magnetic levitation track with a cooling system according to an embodiment of the present invention. As shown in fig. 1, the high-temperature superconductive magnetic levitation track with the cooling system comprises a track bottom plate 1, a train supporting structure and a driving mechanism. The train supporting structure and the driving mechanism are fixedly arranged on the track bottom plate 1, and in the running process of the train, upward supporting force is provided for the train through the train supporting structure, so that the train can keep a suspension state on the track. And then, the cooling and driving structure is controlled to provide driving force for the train and reduce the temperature of the linear motor rotor 4, and meanwhile, the control system controls the train driving structure to control the operation of the train, so that the effect of accurate control is achieved.
As shown in fig. 1-3, the whole track bottom plate 1 is a plate channel with a rectangular section, the track bottom plate 1 is a mounting base of the high-temperature superconductive magnetic levitation track with the cooling system, bolt through holes are formed in the positions, close to the front end and the rear end, of the upper end face of the track bottom plate 1, embedded bolts are arranged in the middle of the upper end face of the track bottom plate 1, the bolt through holes are symmetrically arranged in the left-right direction and the middle of the embedded bolts, the bolt through holes are fixedly connected with a concrete channel base, which is arranged at the lower part of the track bottom plate, of the embedded bolts, the track bottom plate 1 is prevented from loosening in a bolt fixing mode, potential safety hazards are avoided, and the safety and reliability of the high-temperature superconductive magnetic levitation track with the cooling system are improved. The embedded bolts are used for fixedly mounting the train driving structure and provide a mounting base for the train driving structure.
As shown in fig. 1, 4, 5, 6 and 8, the train supporting structure includes a track surface 2, a permanent magnet 3 and a track beam 5. The whole structure of the track beam 5 is a vertically arranged concrete slab, the track beam 5 is arranged on the track bottom plate 1 and is positioned at the outer side of a bolt through hole formed in the upper end face of the track bottom plate 1, the track beam 5 is arranged in the left-right direction and is symmetrical along the middle plane, after the track bottom plate 1 is paved, the track bottom plate 1 is poured, and a base and a support are provided for the train support structure. Meanwhile, the upper end face of the track beam 5 is provided with embedded bolts so as to facilitate the fixed installation of the track face 2 and improve the feasibility of the high-temperature superconductive magnetic levitation track with the cooling system. The whole structure of the track surface 2 is a cuboid plate-shaped structure, the track surface 2 is horizontally arranged on the upper end face of the track beam 5, the track surface 2 is arranged in the left-right direction and is symmetrical along the middle plane, and meanwhile, the track surface 2 is fixedly connected with embedded bolts arranged on the upper end face of the track beam 5 in a bolt fixing mode, so that an installation base is provided for the permanent magnet 3. Preferably, the track surface 2 is made of high-quality steel with good rigidity and strength, on one hand, deformation and damage do not occur when the load of a train is born, and the safety and the reliability of the high-temperature superconductive magnetic levitation track with the cooling system are further improved. On the other hand, the track surface 2 is made of high-quality steel, so that the permanent magnet 3 can be fixedly installed by attracting the steel material by the permanent magnet 3, and the feasibility of the high-temperature superconductive magnetic levitation track with the cooling system is improved. The permanent magnet 3 has a rectangular plate structure with the same section as the track surface 2, the permanent magnet 3 is arranged on the upper end surface of the track surface 2, the permanent magnet 3 is fixedly installed through the attractive force of the permanent magnet 3 to steel, and meanwhile, the permanent magnet 3 is arranged in the left-right direction and is symmetrical along the middle plane. When the train runs, the high-temperature superconductor arranged at the position of the train chassis and the permanent magnet 3 arranged on the train supporting structure generate the same-level repulsive action, so that the levitation force is generated to levitate the train, the running speed is prevented from being influenced by the contact friction between the train and the rail, the train can complete high-speed movement, and the reliability of the high-temperature superconductor magnetic levitation rail with the cooling system is improved.
As shown in fig. 1, 7, 9 and 10, the driving mechanism includes a linear motor rotor 4, a linear motor rotor holder 6 and a cooling pipe 7. Wherein, linear electric motor rotor support 6 overall structure is the cuboid structure, and open between the terminal surface about this cuboid structure has the rectangle through-hole, the installation of the cooling tube 7 of being convenient for. The linear motor rotor support 6 is arranged at the middle position of the track bottom plate 1, is fixedly connected to the track bottom plate 1 through embedded bolts arranged at the middle position of the upper end face of the track bottom plate 1, and is provided with the embedded bolts on the upper end face of the linear motor rotor support 6 so as to facilitate the installation of the linear motor rotor 4. When the train runs, the interaction force received by the linear motor rotor 4 is transmitted to the track base plate 1 of the high-temperature superconductive magnetic levitation track with the cooling system through the linear motor rotor support 6, so that stable support is provided for the linear motor rotor 4, the safe running of the train is ensured, and the safety and reliability of the high-temperature superconductive magnetic levitation track with the cooling system are improved. The whole linear motor rotor 4 is of a cuboid structure and is arranged on the upper end face of the linear motor rotor support 6 in a bolt connection mode and used for providing driving force for a train. In the running process of the train, the induction plates arranged on the bottom structure of the train interact to generate driving force to finish the movement and braking of the train, so that the feasibility of the high-temperature superconductive magnetic levitation track with the cooling system is improved. The whole structure of the cooling pipes 7 is a circular pipeline, and three cooling pipes 7 are arranged in parallel in the hollow structure at the lower end of the linear motor rotor support 6. When the train stably runs, the linear motor rotor 4 continuously works, and the driving mechanism is subjected to auxiliary heat dissipation through the cooling pipe 7, so that the motor is prevented from being in a high-temperature state for a long time, the service life of the motor is reduced, and the energy consumption is increased. The practicability and the safety of the high-temperature superconductive magnetic levitation track with the cooling system are improved.
The embodiment of the invention relates to a high-temperature superconductive magnetic levitation track with a cooling system, which comprises the following specific implementation steps:
step 1: before the train runs, the train and the high-temperature superconductive magnetic levitation track with the cooling system are detected, so that the aim of discharging potential safety hazards is fulfilled, and the safe running of the train is ensured. And then the train is moved to the upper side of the high-temperature superconductive magnetic levitation track with the cooling system, so as to finish the preparation before departure.
Step 2: after the preparation before departure is completed, the high-temperature superconductor is cooled firstly, so that the high-temperature superconductor and the permanent magnet 3 arranged on the track surface 2 generate opposite magnetic poles, and repulsive force is generated to counteract the gravity direction of the train, thereby achieving the purpose of suspending the train.
Step 3: after the train is suspended and kept stable, a magnetic field generated by the linear motor rotor 4 arranged on the linear motor rotor support 6 acts with an induction plate arranged at the lower part of the train to generate electromagnetic force driving force to push the running and braking of the train. The control system controls the energizing current of the linear motor rotor 4, so that the control of the intensity of the electromagnetic field generated by the linear motor rotor 4 is achieved. At the same time, the linear motor rotor 4 is cooled and radiated by a cooling pipe 7 arranged inside the linear motor rotor support 6.
Step 4: when the train starts, a gradually-amplified current is applied to the linear motor rotor 4, so that the linear motor rotor 4 and the induction plate generate a gradually-increased forward driving force; after the train stably runs, a small current is applied to the linear motor rotor 4, so that forward driving force generated by the linear motor rotor 4 and the induction plate can offset resistance born by the running of the train, and the normal running of the train is ensured; when the train is about to get in, a gradually decreasing reverse current is applied to the linear motor rotor 4, so that the linear motor rotor 4 and the induction plate generate a gradually decreasing backward driving force, and the train is helped to be braked in a decelerating way.
Step 5: after the train is braked slowly, the temperature of the high-temperature superconductor arranged on the train bottom plate is gradually increased, so that the high-temperature superconductor can slowly and stably descend until stopping is completed. In addition, the high-temperature superconductive magnetic levitation track with the cooling system should be regularly checked to eliminate potential safety hazards, so that the safety of passengers is ensured.
It will be readily appreciated by those skilled in the art that the foregoing description is merely a preferred embodiment of the invention and is not intended to limit the invention, but any modifications, equivalents, improvements or alternatives falling within the spirit and principles of the invention are intended to be included within the scope of the invention.
Claims (5)
1. The utility model provides a take cooling system's high temperature superconductor magnetic suspension track, includes track bottom plate, its characterized in that:
the train supporting structures are symmetrically arranged on two sides of the track bottom plate and comprise track beams perpendicular to the track bottom plate and track surfaces which are arranged on the tops of the track beams and perpendicular to the track beams, the whole track beam structure is a concrete slab which is vertically arranged, and after the track bottom plate is paved, the concrete slab is poured on the track bottom plate and used as a supporting structure of the magnetic levitation train, the whole track surface structure is a cuboid plate structure and is horizontally and symmetrically arranged on the tops of the track beams and fixedly connected through bolts;
the top of the track surface is provided with a permanent magnet, and the structure and the shape of the permanent magnet are matched with those of the track surface to jointly form a track for the magnetic suspension train to travel;
a driving mechanism is arranged between the train supporting structures and comprises a linear motor rotor support arranged perpendicular to the track bottom plate and a linear motor rotor arranged on the linear motor rotor support, wherein the linear motor rotor is matched with a linear motor stator arranged at the bottom of the magnetic levitation train and the permanent magnet to support the train to suspend to a certain height and drive the train to move;
the whole linear motor rotor support is of a cuboid structure, a through hole is formed in the bottom of the linear motor rotor support, a cooling pipe is arranged in the through hole, and the cooling pipe is used for cooling and radiating the linear motor rotor; and the whole linear motor rotor is of a cuboid structure, is arranged on the upper end face of the linear motor rotor support in a bolt connection mode and is used for providing driving force for a train.
2. A high temperature superconducting magnetic levitation track with cooling system according to claim 1 wherein the cooling pipes are round or square pipes, two or more, each cooling pipe being arranged in rows in the through holes.
3. The high-temperature superconductive magnetic levitation track with cooling system according to claim 1, wherein the track bottom plate is provided with a row of bolt through holes near the inner side of the track beam, and the row of bolt through holes is arranged in parallel with the track beam.
4. A high temperature superconducting magnetic levitation railway with a cooling system according to any of claims 1-3, wherein the permanent magnet is integrally formed in a rectangular parallelepiped plate-like structure having the same cross section as the raceway surface and is fixedly connected to the raceway surface by magnetic attraction force.
5. A method of operating a magnetic levitation train, characterized in that it is implemented using a high-temperature superconducting magnetic levitation track with a cooling system according to any of claims 1-4, comprising the steps of:
s1: detecting the train and the high-temperature superconductive magnetic levitation track with the cooling system before the train runs, and then transferring the train to the high-temperature superconductive magnetic levitation track with the cooling system to finish preparation before departure;
s2: the high-temperature superconductor is cooled, so that the high-temperature superconductor and a permanent magnet arranged on a track surface generate opposite magnetic poles, and repulsive force is generated to offset the gravity direction of the train, so that the train is suspended on the track surface for a certain distance;
s3: after the train is suspended and kept stable, the magnetic field generated by the linear motor rotor interacts with the linear motor rotor arranged at the bottom of the train to generate electromagnetic force driving force to push the running and braking of the train, and meanwhile, the linear motor rotor is cooled and radiated through a cooling pipe arranged inside a linear motor rotor support;
s4: when the train is started, a gradually-amplified current is applied to the linear motor rotor, so that the linear motor rotor and the linear electronic rotor generate a gradually-increased forward driving force, and after the train stably runs, a smaller current is applied to the linear motor rotor, so that the forward driving force generated by the linear motor rotor and the induction plate can offset the resistance born by the running of the train, and the normal running of the train is ensured; when the train is about to enter a station, a gradually-reduced reverse current is applied to the linear motor rotor, so that the linear motor rotor and the induction plate generate a gradually-reduced backward driving force, and the train is helped to perform deceleration braking;
s5: after the train is braked slowly, the temperature of the high-temperature superconductor arranged on the train bottom plate is gradually increased, so that the high-temperature superconductor can slowly and stably descend until stopping is completed.
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| CN201910646466.1A CN110295519B (en) | 2019-07-17 | 2019-07-17 | High-temperature superconductive magnetic levitation track with cooling system and magnetic levitation train operation method |
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| CN201910646466.1A CN110295519B (en) | 2019-07-17 | 2019-07-17 | High-temperature superconductive magnetic levitation track with cooling system and magnetic levitation train operation method |
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| CN110295519B true CN110295519B (en) | 2024-03-15 |
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| CN112644291A (en) * | 2019-10-10 | 2021-04-13 | 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） | Bottom suspension guide system |
| CN112420312B (en) * | 2020-10-29 | 2022-04-08 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Modular high-temperature superconducting magnet system and assembly method thereof |
| CN113415171B (en) * | 2021-07-07 | 2022-10-21 | 西南交通大学 | Suspension driving integrated magnetic suspension system and suspension driving method |
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