CN111196165A - A vacuum pipeline all permanent magnetic repulsion type suspension rail - Google Patents
A vacuum pipeline all permanent magnetic repulsion type suspension rail Download PDFInfo
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- CN111196165A CN111196165A CN202010060094.7A CN202010060094A CN111196165A CN 111196165 A CN111196165 A CN 111196165A CN 202010060094 A CN202010060094 A CN 202010060094A CN 111196165 A CN111196165 A CN 111196165A
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- 239000000725 suspension Substances 0.000 title claims abstract description 155
- 230000001360 synchronised effect Effects 0.000 claims abstract description 63
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 36
- 230000017525 heat dissipation Effects 0.000 claims abstract description 28
- 230000005415 magnetization Effects 0.000 claims description 12
- 230000005484 gravity Effects 0.000 claims description 9
- 230000005389 magnetism Effects 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 5
- 230000002146 bilateral effect Effects 0.000 claims 7
- 239000011358 absorbing material Substances 0.000 claims 1
- 238000001816 cooling Methods 0.000 claims 1
- 230000007423 decrease Effects 0.000 claims 1
- 238000005339 levitation Methods 0.000 abstract description 60
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 20
- 238000005265 energy consumption Methods 0.000 description 9
- 230000005855 radiation Effects 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 238000005057 refrigeration Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 238000003491 array Methods 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000007613 environmental effect Effects 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
- B60L13/10—Combination of electric propulsion and magnetic suspension or levitation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/08—Sliding or levitation systems
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61B—RAILWAY SYSTEMS; EQUIPMENT THEREFOR NOT OTHERWISE PROVIDED FOR
- B61B13/00—Other railway systems
- B61B13/10—Tunnel systems
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- Transportation (AREA)
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Power Engineering (AREA)
- Control Of Vehicles With Linear Motors And Vehicles That Are Magnetically Levitated (AREA)
Abstract
A vacuum pipeline full permanent magnetic repulsion type suspension vehicle rail is characterized in that a vehicle-mounted suspension magnet (3), a rail suspension magnet (4), a vehicle-mounted guide magnet (5) and a rail guide magnet (6) of the vacuum pipeline full permanent magnetic repulsion type suspension vehicle rail respectively realize suspension and guide of a magnetic suspension vehicle body (8), and the vehicle-mounted suspension magnet and the rail guide magnet are Halbach array magnets. The cross section of the vehicle-mounted heat-conducting aluminum alloy plate (16) is concave, is arranged along the inner side surface of the magnetic levitation vehicle body (8), is attached to the inner side surfaces of the vehicle-mounted suspension magnet (3), the vehicle-mounted guide magnet (5) and the double-sided permanent magnet synchronous linear motor rotor (1), and is embedded into the wall surface of the magnetic levitation vehicle body (8); the cross section of the track heat-conducting aluminum alloy plate (15) is concave, is arranged along the outer side surface of the track (9), is attached to the outer side surfaces of the track suspension magnet (4), the track guide magnet (6) and the double-side permanent magnet synchronous linear motor stator (2), and is embedded into the wall surface of the track (9); the pipeline heat dissipation device (17) is positioned in the bottom wall of the vacuum pipeline (13) and is attached to the rail heat conduction aluminum alloy plate (15).
Description
Technical Field
The invention relates to a vacuum pipeline full permanent magnetic repulsion type suspension rail.
Background
With the development of society and the mature application of wheel-rail traffic technology, people put forward new requirements of rapidness, safety, energy conservation, comfort and environmental protection on the traffic technology, and under the social background, the vacuum pipeline magnetic suspension traffic technology draws attention and research of the whole society. The existing vacuum pipeline magnetic suspension transportation technology mainly comprises the following four types: normal conduction Electromagnetic levitation (EMS), low temperature superconducting Electromagnetic levitation (EDS), high temperature superconducting magnetic levitation, permanent magnet electric magnetic levitation and permanent magnet compensation magnetic levitation. The normal-conduction EMS magnetic levitation needs active control of levitation guidance, the control is complex, the operation energy consumption is large, the load ratio is about 2 tons/meter, and the manufacturing cost is about 3 hundred million yuan/kilometer; the low-temperature superconducting EDS magnetic suspension does not need active control, is simple to control, has high self-stability, is provided with a low-temperature refrigeration system and a wheel track system, has large operation energy consumption, has the manufacturing cost of about 12 hundred million yuan/kilometer and has the load of about 3.5 tons/meter; the high-temperature superconducting magnetic suspension does not need active control, has high stability, is provided with a low-temperature refrigeration system, a high-temperature superconducting block and a permanent magnet track, and has higher manufacturing cost, higher operation energy consumption and relatively higher load ratio; the permanent magnet electric magnetic suspension does not need active control, has high self-stability, large operation loss, about 1.65 million yuan/kilometer of manufacturing cost and about 3.5 tons/meter of load ratio; the permanent magnet compensation type magnetic suspension has low energy consumption, the dead weight is 0.8 ton/m, the manufacturing cost is about 0.8 million yuan/km, and the load ratio is about 6 ton/m.
In summary, the normal-conduction EMS magnetic suspension, the low-temperature superconducting EDS magnetic suspension and the high-temperature superconducting magnetic suspension have higher manufacturing costs, but have lower load capacity, and have insignificant advantages in the future vacuum pipeline magnetic suspension traffic application, while the low-temperature superconducting EDS magnetic suspension and the permanent magnet electric magnetic suspension perform suspension guidance based on the induced eddy current principle, and generate a large amount of heat loss in the operation process to increase the heat dissipation difficulty of the vacuum pipeline. Although the permanent magnet compensation type magnetic suspension has low cost ratio, low operation energy consumption and relatively large load ratio, the fixed pulley and the magnetic motor are respectively adopted for guiding and driving, the structure is complex, the stability is not high, and the development difficulty in ultrahigh-speed vacuum pipeline magnetic suspension traffic is large. Therefore, the magnetic suspension rail structure which is used in the field of vacuum pipeline magnetic suspension traffic and has the characteristics of high load ratio, good heat dissipation performance, low operation energy consumption, strong self-stability and the like is a hot problem worthy of further research and exploration.
Disclosure of Invention
In order to overcome the defects of the existing vacuum pipeline magnetic suspension traffic technology, the invention provides a vacuum pipeline full-permanent-magnet repulsion type suspension rail. The vacuum pipeline magnetic suspension vehicle rail has the characteristics of high load ratio, good heat dissipation performance, low operation energy consumption, strong self-stability and the like.
The invention discloses a double-side permanent magnet synchronous linear motor rotor and stator, a vehicle-mounted suspension magnet, a vehicle-mounted guide magnet, a track suspension magnet, a track guide magnet, a magnetic suspension vehicle passenger or cargo space, a magnetic suspension vehicle body, a track and a heat-conducting aluminum alloy plate in a vacuum pipeline full permanent magnet repulsion type suspension vehicle rail. The two rotors of the double-side permanent magnet synchronous linear motor are arranged in the centers of the two side walls of the magnetic levitation vehicle body, the two stators are arranged in the centers of the two side walls with concave tracks on the cross sections, the rotors and the stators of the double-side permanent magnet synchronous linear motor are parallel in the vertical direction and opposite in the horizontal direction, and a gap between the rotors and the stators is a motor air gap to form a permanent magnet synchronous linear motor driving system. The two sets of vehicle-mounted suspension magnets are horizontally arranged at the bottom of the magnetic suspension vehicle body, the two sets of track suspension magnets are horizontally arranged at the bottom of the concave track, the vehicle-mounted suspension magnets and the track suspension magnets are parallel in the horizontal direction and opposite in the vertical direction, and the air gap height between the vehicle-mounted suspension magnets and the track suspension magnets is the suspension height. Four groups of vehicle-mounted guiding magnets are arranged on the outer sides of two side walls of the magnetic levitation vehicle body, and every two groups of vehicle-mounted guiding magnets are respectively positioned on the upper part and the lower part of the rotor of the double-side permanent magnet synchronous linear motor. Four groups of track guiding magnets are arranged on the inner sides of two side walls of the concave track, and every two groups of track guiding magnets are respectively positioned on the upper part and the lower part of the stator of the double-side permanent magnet synchronous linear motor. The vehicle-mounted guide magnet and the track guide magnet are parallel in the vertical direction and opposite in the horizontal direction, and the width of an air gap between the vehicle-mounted guide magnet and the track guide magnet is the guide width. The heat-conducting aluminum alloy plate comprises a vehicle-mounted heat-conducting aluminum alloy plate and a track heat-conducting aluminum alloy plate; the cross section of the vehicle-mounted heat-conducting aluminum alloy plate is concave, is arranged along the inner side surface of the magnetic levitation vehicle body, is attached to the inner side surfaces of the vehicle-mounted suspension magnet, the vehicle-mounted guide magnet and the double-sided permanent magnet synchronous linear motor rotor, and is embedded into the wall surface of the magnetic levitation vehicle; the cross section of the track heat-conducting aluminum alloy plate is concave, is arranged along the outer side surface of the track, is attached to the outer side surfaces of the track suspension magnet, the track guide magnet and the double-side permanent magnet synchronous linear motor stator, and is embedded into the wall surface of the track. The pipeline heat dissipation device is located in the bottom wall of the vacuum pipeline and attached to the rail heat conduction aluminum alloy plate. The air exhaust end of the vacuum pump unit is arranged on the inner side wall of the vacuum pipeline, and the vacuum pump unit is positioned outside the wall of the vacuum pipeline. The converter is respectively connected with the stator of the double-sided permanent magnet synchronous linear motor and the vacuum pump unit to supply power, drive the permanent magnet synchronous linear motor and maintain the vacuum state in the vacuum pipeline.
The vehicle-mounted suspension magnet, the vehicle-mounted guide magnet, the track suspension magnet and the track guide magnet are combined by a Halbach array. The vehicle-mounted suspension magnet and the track suspension magnet, and the vehicle-mounted guide magnet and the track guide magnet are symmetrically arranged in two groups in the horizontal direction and the vertical direction respectively, so that the suspension guide self-stability of the magnetic suspension vehicle is improved while high-load-ratio suspension is realized by using the least permanent magnet. The vehicle-mounted suspension magnet, the vehicle-mounted guide magnet, the track suspension magnet and the track guide magnet are respectively a Halbach array formed by combining five permanent magnet units or a Halbach array formed by combining three permanent magnet units. Each permanent magnet unit in the vehicle-mounted levitation magnet and the track levitation magnet is opposite in magnetization direction in the vertical direction and the same in magnetization direction in the horizontal direction. Each permanent magnet unit in the vehicle-mounted guide magnet and the track guide magnet has opposite magnetization directions in the horizontal direction and the same magnetization direction in the vertical direction.
Under the condition of no load, the magnetic repulsion and gravity of the magnetic suspension train body are balanced to realize stable suspension, and the suspension height is the maximum value at the moment. Under the full-load condition, the magnetic repulsion and the gravity that the magnetic levitation automobile body received are balanced, realize stable suspension, and the height of suspending this moment is the minimum. Under the condition of non-full load, the magnetic repulsion and the gravity borne by the magnetic suspension vehicle body are balanced to realize stable suspension, and the suspension height is between the maximum value and the minimum value. When the track is the curve type track, the magnetic levitation vehicle body can produce lateral deviation under the action of centrifugal force, so that the guiding width of the deviation side is reduced, the guiding width of the deviation side is increased, the magnetic repulsion of the track guiding magnet of the deviation side to the magnetic levitation vehicle body is reduced, the lateral deviation of the magnetic levitation vehicle body is effectively overcome, and stable guiding is realized. The whole suspension guiding process does not need active control, and the magnetic suspension vehicle body has stronger self-stability.
The vacuum pipeline full permanent magnet repulsion type suspension vehicle rail adopts radiation and conduction heat dissipation modes to ensure the heat balance inside the vacuum pipeline. The vehicle-mounted suspension magnet is located at the bottom of the magnetic levitation vehicle body, the rotors of the vehicle-mounted guide magnet and the double-sided permanent magnet synchronous linear motor are respectively located on the left side and the right side of the magnetic levitation vehicle body, the vehicle-mounted heat-conducting aluminum alloy plate and the vehicle-mounted suspension magnet are attached to the inner side faces of the vehicle-mounted guide magnet and the double-sided permanent magnet synchronous linear motor rotor, heat of the magnetic levitation vehicle body is conducted and dissipated through the vehicle-mounted heat-conducting aluminum alloy plate, the vehicle-mounted suspension magnet is effectively reduced, the temperature difference between the vehicle-mounted guide magnet and the double-sided permanent magnet synchronous linear motor. And the vehicle-mounted suspension magnet, the vehicle-mounted guide magnet and the double-side permanent magnet synchronous linear motor rotor radiate heat to the track suspension magnet, the track guide magnet and the double-side permanent magnet synchronous linear motor stator. The track suspension magnet is located spill track bottom, track direction magnet and the synchronous linear electric motor stator of double-edged permanent magnetism are located the spill track left and right respectively, the inboard of two right lateral walls, track heat conduction aluminum alloy plate and track suspension magnet, the lateral surface laminating of track direction magnet and the synchronous linear electric motor stator of double-edged permanent magnetism, track suspension magnet, permanent magnetism direction magnet and the synchronous linear electric motor stator of double-edged permanent magnetism realize heat-conduction each other through track heat conduction aluminum alloy plate, and the pipeline heat abstractor in track heat conduction aluminum alloy plate and the vacuum pipe bottom wall carries out the conduction heat dissipation. The heat dissipation medium in the pipeline heat dissipation device, namely water or other low-temperature liquid, flows circularly all the time, takes away heat in the heat conduction aluminum alloy plate of the track, and realizes the radiation and conduction heat dissipation functions of the vacuum pipeline system.
In the vacuum pipeline full-permanent-magnet repulsion type suspension vehicle rail, the outer side surfaces of the vehicle-mounted suspension magnet, the vehicle-mounted guide magnet and the double-side permanent-magnet synchronous linear motor rotor, namely the surfaces opposite to the side walls of the concave track, can be provided with heat dissipation material layers; the inner side surfaces of the track suspension magnet, the track guide magnet and the double-side permanent magnet synchronous linear motor stator, namely the surface opposite to the outer wall of the magnetic suspension train, can be provided with a heat absorption material layer.
The permanent magnet synchronous linear motor in the vacuum pipeline full permanent magnet repulsion type suspension rail adopts a double-sided permanent magnet synchronous linear motor. Two rotors of the double-side permanent magnet synchronous linear motor are arranged at the central positions of two side walls of the magnetic levitation vehicle body, and two stators of the double-side permanent magnet synchronous linear motor are arranged at the central positions of two side walls of the concave track. The double-side permanent magnet synchronous linear motor rotor and the stator are arranged in a structure which is opposite in the horizontal direction and parallel in the vertical direction, the effect of the vertical force of the linear motor can be effectively counteracted, the control difficulty of the suspension guide of the magnetic suspension vehicle is reduced, and the self-stability of the suspension guide of the magnetic suspension vehicle is increased.
The invention has the following advantages:
1. the load ratio is high. The load ratio of the novel track structure can reach 10t/m, is about 5 times of the load ratio of EMS normal conduction type magnetic levitation traffic, and is about 2.5 times of the load ratio of EDS low-temperature superconducting type magnetic levitation traffic.
2. The operation energy consumption is low. Compared with the EMS magnetic levitation transportation, the novel track structure does not need complex active control, and can avoid generating a large amount of control loss; compared with EDS low-temperature superconducting magnetic levitation transportation, the method does not need complex active control and does not need to carry a low-temperature refrigeration system; compared with Magplane magnetic suspension traffic, the method does not need to utilize induced eddy current for suspension guidance, and the eddy current loss is extremely small; the permanent magnet synchronous linear motor is adopted for driving, so that the motor efficiency is high and the loss is low.
3. And the heat dissipation performance is good. The novel rail structure adopts radiation and conduction heat dissipation modes, effectively ensures heat balance inside the vacuum pipeline from the structural design, and has low heat dissipation cost and high efficiency.
4. The self-stability is strong. The novel rail structure adopts a passive suspension and guide mode, does not need active control, and only needs acceleration and deceleration through a linear motor control system.
5. The comprehensive cost ratio is not high. The novel track structure of the invention has no complex active control and low-temperature refrigeration system, the comprehensive cost ratio is about 3 hundred million yuan/kilometer, about 1 time of the cost ratio of EMS normal conduction type magnetic suspension traffic, and about 0.25 time of the cost ratio of EDS low-temperature superconducting type magnetic suspension traffic.
Drawings
FIG. 1 is a schematic structural diagram of a suspension track according to an embodiment of the present invention;
fig. 2 is a schematic side view of a magnetic levitation vehicle body according to an embodiment of the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments:
fig. 1 shows an embodiment of the present invention, in the vacuum pipeline full permanent magnet repulsion type levitation vehicle rail of the embodiment, a double-sided permanent magnet synchronous linear motor rotor 1 and a stator 2, a vehicle-mounted levitation magnet 3, a track levitation magnet 4, a vehicle-mounted guidance magnet 5, a track guidance magnet 6, a maglev passenger or cargo space 7, a maglev vehicle body 8, a track 9, a track heat-conducting aluminum alloy plate 15, and a vehicle-mounted heat-conducting aluminum alloy plate 16 are arranged inside a vacuum pipeline 13, a pipeline heat dissipation device 17 is located in a bottom wall of the vacuum pipeline 13, a converter 10 and a vacuum pump unit 14 are arranged outside the vacuum pipeline wall, the maglev passenger or cargo space 7 is located in the center of the maglev vehicle body 8, and the periphery is a side wall of the maglev vehicle body 8.
Two rotors 1 of the double-side permanent magnet synchronous linear motor are arranged in the centers of two side walls of a magnetic levitation vehicle body 8, two stators 2 are arranged in the centers of the two side walls with concave sections 9, the rotors 1 and the stators 2 of the double-side permanent magnet synchronous linear motor are parallel in the vertical direction and opposite in the horizontal direction, and a gap between the rotors 1 and the stators 2 is a motor air gap to form a double-side permanent magnet synchronous linear motor driving system. The two groups of vehicle-mounted suspension magnets 3 are horizontally arranged at the bottom of the magnetic suspension vehicle body 8, the two groups of track suspension magnets 4 are horizontally arranged at the bottom of the concave track 9, the vehicle-mounted suspension magnets 3 and the track suspension magnets 4 are parallel in the horizontal direction and opposite in the vertical direction, and the air gap height between the vehicle-mounted suspension magnets and the track suspension magnets is the suspension height 11. Four groups of vehicle-mounted guiding magnets 5 are arranged on the outer sides of two side walls of the magnetic levitation vehicle body 8, and every two groups of vehicle-mounted guiding magnets 5 are respectively positioned on the upper part and the lower part of the double-side permanent magnet synchronous linear motor rotor 1. Four groups of track guiding magnets 6 are arranged on the inner sides of two side walls of the concave track 9, and every two groups of track guiding magnets 6 are respectively positioned on the upper part and the lower part of the double-side permanent magnet synchronous linear motor stator 2. The vehicle-mounted guide magnet 5 and the track guide magnet 6 are parallel to each other in the vertical direction and opposite to each other in the horizontal direction, and the width of an air gap between the vehicle-mounted guide magnet and the track guide magnet is a guide width 12. The heat-conducting aluminum alloy plate comprises a vehicle-mounted heat-conducting aluminum alloy plate 16 and a track heat-conducting aluminum alloy plate 15; the cross section of the vehicle-mounted heat-conducting aluminum alloy plate 16 is concave, is arranged along the inner side surface of the magnetic levitation vehicle body 8, is attached to the inner side surfaces of the vehicle-mounted suspension magnet 3, the vehicle-mounted guide magnet 5 and the double-sided permanent magnet synchronous linear motor rotor 1, and is embedded into the wall surface of the magnetic levitation vehicle body 8; the cross section of the track heat-conducting aluminum alloy plate 15 is concave, is arranged along the outer side surface of the track 9, is attached to the outer side surfaces of the track suspension magnet 4, the track guide magnet 6 and the double-side permanent magnet synchronous linear motor stator 2, and is embedded into the wall surface of the track 9. The pipeline heat dissipation device 17 is located in the bottom wall of the vacuum pipeline 13 and attached to the rail heat-conducting aluminum alloy plate 15. The air exhaust end of the vacuum pump unit 14 is arranged on the inner side wall of the vacuum pipeline 13, and the vacuum pump unit is positioned outside the wall of the vacuum pipeline 13. The converter device 10 is respectively connected with the stator 2 of the double-sided permanent magnet synchronous linear motor and the vacuum pump unit 14 for supplying power, driving the permanent magnet synchronous linear motor and maintaining the vacuum state in the vacuum pipeline 13.
The vehicle-mounted suspension magnet 3, the track suspension magnet 4, the vehicle-mounted guide magnet 5 and the track guide magnet 6 are Halbach arrays formed by combining five permanent magnet units, and two groups of Halbach arrays are symmetrically arranged in the horizontal direction and the vertical direction respectively. The magnetization directions of each permanent magnet unit in the vehicle-mounted levitation magnet 3 and the track levitation magnet 4 in the vertical direction are opposite, and the magnetization directions in the horizontal direction are the same; each of the permanent magnet units in the on-vehicle guidance magnet 5 and the track guidance magnet 6 has opposite magnetization directions in the horizontal direction and the same magnetization direction in the vertical direction. The design of the permanent magnet array structure can effectively reduce magnetic leakage, can enable the track structure to obtain larger suspension force under the same permanent magnet material consumption, improves the magnetic suspension vehicle load ratio, and the load ratio can reach 10 t/m. Under the condition of no load, the magnetic repulsion and gravity borne by the magnetic suspension vehicle body 8 are balanced to realize stable suspension, and the suspension height 11 is the maximum value; under the condition of full load, the magnetic repulsion and gravity borne by the magnetic levitation vehicle body 8 are balanced to realize stable levitation, and the levitation height 11 is the minimum value at the moment; under the condition of non-full load, the magnetic repulsion and the gravity borne by the magnetic levitation vehicle body 8 are balanced to realize stable levitation, and the levitation height 11 is between the maximum value and the minimum value. When the track 9 is a curved track, the magnetic levitation vehicle body 8 can generate transverse offset under the action of centrifugal force, so that the guide width 12 of the offset side is reduced, the guide width 12 of the offset side is increased, the magnetic repulsion of the track guide magnet 5 of the offset side to the magnetic levitation vehicle body 8 is reduced, the transverse offset of the magnetic levitation vehicle body 8 is effectively overcome, and stable guidance is realized. The whole stable suspension guiding process does not need active control, and the magnetic suspension vehicle body 8 has stronger self-stability. In addition, the vehicle-mounted suspension magnet 3, the track suspension magnet 4, the vehicle-mounted guide magnet 5 and the track guide magnet 6 are symmetrically arranged in the horizontal direction and the vertical direction, so that the suspension guide stability of the magnetic levitation vehicle body 8 can be effectively improved, and the self-stability of the system is enhanced.
The invention adopts radiation and conduction heat dissipation modes to ensure the heat balance in the vacuum pipeline. The vehicle-mounted suspension magnet 3 is positioned at the bottom of the magnetic levitation vehicle body 8, the vehicle-mounted guide magnet 5 and the double-side permanent magnet synchronous linear motor rotor 1 are respectively positioned on the outer sides of the left side wall and the right side wall of the magnetic levitation vehicle body 8, and the vehicle-mounted heat-conducting aluminum alloy plate 16 is attached to the inner side faces of the vehicle-mounted suspension magnet 3, the vehicle-mounted guide magnet 5 and the double-side permanent magnet synchronous linear motor rotor 1. Based on the principle that heat is transferred from a high temperature to a low temperature through a vehicle-mounted heat-conducting aluminum alloy plate 16 under the condition of no external force acting followed by heat radiation and heat conduction, the heat of the side wall of the magnetic levitation vehicle body 8 is transferred from the high temperature to the low temperature, the temperature difference between the vehicle-mounted levitation magnet 3, the vehicle-mounted guide magnet 5 and the double-side permanent magnet synchronous linear motor rotor 1 is reduced, and the heat dissipation balance of the three is ensured. And along the radiation heat dissipation direction 19, the vehicle-mounted suspension magnet 3, the vehicle-mounted guide magnet 5 and the double-side permanent magnet synchronous linear motor rotor 1 radiate heat to the track suspension magnet 4, the track guide magnet 6 and the double-side permanent magnet synchronous linear motor stator 2. The track suspension magnet 4 is located the bottom of spill track 9, track direction magnet 6 and the synchronous linear electric motor stator of double-sided type permanent magnetism 2 are located spill track 9 left and right two lateral walls's inboard respectively, track heat conduction aluminum alloy plate 15 and track suspension magnet 4, the laminating of the lateral surface of track direction magnet 6 and the synchronous linear electric motor stator of double-sided type permanent magnetism 2, track suspension magnet 4, permanent magnetism direction magnet 6 and the synchronous linear electric motor stator of double-sided type permanent magnetism 2 realize heat-conduction each other through track heat conduction aluminum alloy plate 15, and carry out conduction heat dissipation towards pipeline heat abstractor 17 along conduction heat dissipation direction 18. The pipeline heat dissipation device 17 is arranged in the bottom wall of the vacuum pipeline 13, and a heat dissipation medium, namely water or other low-temperature liquid, in the pipeline heat dissipation device 17 flows in a circulating mode all the time, so that heat in the rail heat conduction aluminum alloy plate 15 is taken away, and the radiation and conduction heat dissipation functions of the vacuum pipeline system are achieved.
The invention adopts a double-sided permanent magnet synchronous linear motor for driving. Two rotors 1 of the double-side permanent magnet synchronous linear motor are arranged at the central positions of two side walls of the magnetic levitation vehicle body 8, and two stators 2 of the double-side permanent magnet synchronous linear motor are arranged at the central positions of two side walls of the concave track 9. The double-side permanent magnet synchronous linear motor rotor 1 and the stator 2 are arranged in a structure which is opposite in the horizontal direction and parallel in the vertical direction, the effect of the vertical force of the linear motor can be effectively counteracted, the control difficulty of the suspension guide of the magnetic suspension vehicle body 8 is reduced, and the self-stability of the suspension guide of the magnetic suspension vehicle body 8 is increased.
Fig. 2 is a schematic side view of the maglev vehicle body 8 according to the embodiment of the present invention. The head and the tail of the magnetic levitation vehicle body 8 are of streamline structures, and the pneumatic friction resistance of the magnetic levitation vehicle in the medium and low vacuum states can be effectively reduced. The rotor 1 of the double-side permanent magnet synchronous linear motor is arranged at the central position of the lateral surface of the magnetic levitation vehicle body 8, the vehicle-mounted guiding magnets 5 are arranged above and below the rotor 1, and the vehicle-mounted suspending magnets 3 are arranged at the bottom of the lateral surface of the magnetic levitation vehicle body 8 and are aligned with the vehicle-mounted guiding magnets in the vertical direction. A plurality of groups of vehicle-mounted suspension magnets 3 and vehicle-mounted guide magnets 4 are arranged on the lateral surface of the magnetic levitation vehicle body 8, and the specific number of the groups is determined according to the load index of the magnetic levitation vehicle body 8 and the curvature index of the track 9; the double-side permanent magnet synchronous linear motor rotor 1 is arranged on the lateral surface of the magnetic levitation vehicle body 8 in multiple groups, and the specific number of the groups is determined according to indexes such as acceleration, running speed per hour and the like of the magnetic levitation vehicle body 8.
The vacuum pipeline full permanent magnetic repulsion type suspension rail has the advantages that: the Halbach array magnet structure design is carried out by adopting the permanent magnet material with high magnetic energy product, high remanence density and high coercive force, and the unilateral magnetic field intensity is high and the load ratio is high; the radiation and conduction heat dissipation structure design is adopted, so that the system has good heat dissipation effect, low cost and high efficiency; a passive suspension and passive guiding mode is adopted, so that the system is easy to control and has strong self-stability; no complex active control and low-temperature refrigeration system is needed, the operation energy consumption is low, and the comprehensive cost ratio is not high.
Claims (7)
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| CN202010060094.7A CN111196165A (en) | 2020-01-19 | 2020-01-19 | A vacuum pipeline all permanent magnetic repulsion type suspension rail |
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| CN202010060094.7A CN111196165A (en) | 2020-01-19 | 2020-01-19 | A vacuum pipeline all permanent magnetic repulsion type suspension rail |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112277975A (en) * | 2020-11-02 | 2021-01-29 | 西南交通大学 | A suspension train driven by bilateral linear motors |
| CN113037002A (en) * | 2021-03-01 | 2021-06-25 | 中国科学院电工研究所 | Vacuum annular track bearingless magnetic suspension flywheel energy storage system |
| CN113415169A (en) * | 2021-06-30 | 2021-09-21 | 中铁二院工程集团有限责任公司 | Suspension guide driving system, magnetic-levitation train and magnetic-levitation system |
| CN114518043A (en) * | 2020-11-19 | 2022-05-20 | 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） | Pipeline interval type heat dissipation method for vacuum pipeline magnetic suspension transportation system |
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| CN113037002A (en) * | 2021-03-01 | 2021-06-25 | 中国科学院电工研究所 | Vacuum annular track bearingless magnetic suspension flywheel energy storage system |
| CN113415169A (en) * | 2021-06-30 | 2021-09-21 | 中铁二院工程集团有限责任公司 | Suspension guide driving system, magnetic-levitation train and magnetic-levitation system |
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