An electromagnetic acceleration system of a super-deep abandoned mine magnetic suspension track

Abstract

The application discloses an electromagnetic acceleration system of a super-deep abandoned mine magnetic suspension track, comprising: a magnetic suspension track, which is composed of a plurality of movable sleeper assemblies and is provided in parallel as A / B guide rails, supports dynamic adjustment of track gauge, and is suitable for different specifications of magnetic suspension test pieces; an electromagnetic acceleration device, which comprises a magnetic suspension test piece and permanent magnets installed on both sides of the magnetic suspension test piece, the permanent magnets adopt a halbach array to enhance air gap magnetic density, three annular coils are arranged on the movable sleeper assembly and are connected with an external power supply, a magnetic field is excited by current to push a carrier to accelerate along a vertical or inclined mine, and high-speed transportation is realized; an energy recovery subsystem, which is used for storing and releasing electric energy in the operation process of the magnetic suspension test piece; and an intelligent control and safety subsystem, which monitors track and mine structure stability in real time, prevents metal fatigue or geological risks. The system provides a natural acceleration environment by using the vertical depth of the mine, constructs an electromagnetic acceleration channel, and realizes efficient transportation and resource recycling.

Description

Technical Field

[0001] This invention relates to the field of coal mining technology, and in particular to an electromagnetic acceleration system for a magnetic levitation track in an ultra-deep abandoned mine. Background Technology

[0002] The energy industry is a fundamental sector of the national economy and a technology-intensive industry. Coal has long dominated my country's resource consumption structure. With the continued exploitation of coal resources, a large number of mines have been abandoned due to resource depletion. How to efficiently and sustainably utilize these abandoned mines has become a crucial issue.

[0003] Currently, the reuse of abandoned mines mainly focuses on energy storage and gas resource recovery. For example, some abandoned mines are converted into gravity energy storage facilities, utilizing the vertical depth of the mine to convert potential energy into electrical energy; or they are used for compressed air energy storage, storing high-pressure air underground to regulate energy supply and demand. In addition, gas resource recovery from abandoned mines is also a common reuse method. However, these methods fail to fully explore the potential value of the unique vertical depth and spatial structure of mines in the transportation sector.

[0004] On the other hand, maglev track technology, due to its advantages such as high speed, low friction, and low noise, is considered an important development direction for future transportation systems. However, traditional maglev tracks suffer from problems such as high construction costs and poor terrain adaptability, especially in applications with complex geological conditions or large vertical drops, where their economic and technical feasibility is limited. For example, in areas with significant topographic relief, traditional maglev tracks require large-scale civil engineering support, leading to a surge in costs; and in applications with ultra-deep vertical channels, existing technologies lack effective acceleration and braking solutions.

[0005] Therefore, there is an urgent need for a new type of magnetic levitation track and electromagnetic acceleration system that can make full use of the vertical depth and spatial structure of abandoned mines to solve the problems of high cost and insufficient adaptability of traditional magnetic levitation technology, while providing an innovative path for the high-value reuse of abandoned mines. Summary of the Invention

[0006] The problem to be solved by this invention is to provide an electromagnetic acceleration system for a magnetic levitation track in an ultra-deep abandoned mine, which utilizes the vertical depth of the mine to provide a natural acceleration environment, thereby achieving high-efficiency transportation and resource reuse.

[0007] The present invention adopts the following technical solution: an electromagnetic acceleration system for an ultra-deep abandoned mine magnetic levitation track, comprising: a magnetic levitation track, an electromagnetic acceleration device, an energy recovery subsystem, and an intelligent control and safety subsystem.

[0008] Preferably, the magnetic levitation track is embedded in the horizontal tunnel of the mine, which enhances stability by utilizing the existing support structure of the mine and constructs an electromagnetic acceleration channel by utilizing the vertical depth of the mine, thereby reducing construction costs.

[0009] The magnetic levitation track adopts a modular design, consisting of multiple movable sleeper components forming parallel A / B guide rails, supporting dynamic gauge adjustment and adapting to different specifications of magnetic levitation test pieces.

[0010] The movable sleeper assembly is equipped with three ring coils that are connected to an external power source. The magnetic field is excited by the current, which propels the magnetic levitation test piece to accelerate along a vertical or inclined mine shaft for high-speed transportation.

[0011] Preferably, the electromagnetic acceleration device is located between the A / B rails and includes a magnetic levitation test piece and two permanent magnets installed on both sides of the magnetic levitation test piece; based on the electromagnetic rail acceleration principle, the magnetic field in the electromagnetic acceleration channel is uniformly distributed to reduce energy loss; the permanent magnets adopt a Halbach array to enhance the air gap magnetic flux density.

[0012] Preferably, a Hall sensor is also installed in the magnetic levitation track to detect the position of the electromagnetic acceleration device.

[0013] Preferably, the energy recovery subsystem combines the mine's gravitational potential energy to store electrical energy during the downward acceleration process and release energy to assist in deceleration during the upward movement, thereby improving the energy efficiency ratio.

[0014] Preferably, the intelligent control and safety subsystem integrates geomagnetic memory detection technology to monitor the stability of the track and mine structure in real time, prevent metal fatigue or geological risks, and uses fuzzy recognition algorithm to process Hall sensor data to optimize acceleration and braking strategies.

[0015] Preferably, the control of the magnetic levitation track in the system of the present invention includes: an upward link and a suspension link, wherein the suspension link includes maintaining front-to-back centered suspension and maintaining left-to-right centered suspension.

[0016] Preferably, the upward movement is achieved through the interaction between a permanent magnet and a three-ring coil, as follows:

[0017] Step 1.1: According to the principle of magnetic repulsion between like poles and attraction between unlike poles, the two permanent magnets installed on the magnetic levitation test piece and the three ring coils arranged on the A / B rails repel each other, controlling the upward movement of the magnetic levitation test piece;

[0018] Step 1.2: When the magnetic levitation test piece reaches the next equilibrium position, the magnetic poles of the three-ring coil are changed by the current, and the magnetic levitation test piece continues to move upward statically; wherein, the equilibrium position is the position where the electromagnetic force and gravity are balanced between the electromagnetic acceleration device and the A / B guide rails;

[0019] Step 1.3: Repeat steps 1.1 to 1.2 to keep the magnetic levitation test piece moving upward.

[0020] Preferably, the suspension is centered front and back, achieved by generating three magnetic fields (front, middle, and rear) after energizing a three-ring coil, as follows:

[0021] There is no effect when the maglev test piece passes through the center of the figure-eight shape; when the maglev test piece moves forward, the three-ring coil applies a backward pulling force to the maglev test piece; when the maglev test piece moves backward, the three-ring coil applies a forward pulling force to the maglev test piece, so that the maglev test piece always stays in the center of the three-ring coil.

[0022] Preferably, the magnetic levitation test piece is kept centered horizontally and connected by three loop coils. The thrust generated by the current is used to push the magnetic levitation test piece back to the center of the magnetic levitation track. The process is as follows:

[0023] When the magnetic levitation test piece is in the middle of the magnetic levitation track, the magnetic field generated by the three ring coils on the left and right sides exerts equal force on the two permanent magnets, and no current is generated.

[0024] When the magnetic levitation test piece is slightly to the right of the center of the magnetic levitation track, the electromotive force of the three-ring coils on both sides changes, and the coil circuit generates current, which affects the magnetic field at the bottom of the three-ring coil. The magnetic field on the right becomes larger and the magnetic field on the left becomes smaller, generating a leftward thrust that pushes the magnetic levitation test piece back to the center of the track.

[0025] When the maglev test piece is slightly to the left of the center of the maglev track, the changing magnetic field generates a rightward thrust, keeping the maglev test piece in a centered position on the track.

[0026] Compared with the prior art, the present invention, employing the above technical solution, has the following technical effects:

[0027] 1. The present invention is an electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks, which can achieve high-efficiency transportation. The electromagnetic acceleration system can shorten the acceleration distance of the vehicle, and the vertical depth of the mine provides a natural acceleration environment. The theoretical speed can reach more than 500 km / h.

[0028] 2. The suspended track of this invention adopts a modular design with high compatibility. The movable sleeper components support multi-gauge switching to adapt to different scenarios such as freight and passenger transport. Energy consumption is reduced through the energy recovery subsystem, which is green and energy-saving, and the temperature control requirements are reduced by combining natural ventilation in the mine. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the magnetic levitation track for the ultra-deep abandoned mine of the present invention;

[0030] Figure 2 This is a schematic diagram of the magnetic levitation guide rail of the present invention;

[0031] Figure 3 This is a schematic diagram of the three-ring coil of the present invention;

[0032] Figure 4 This is a schematic diagram of the electromagnetic acceleration device of the present invention;

[0033] Figure 5 This is a schematic diagram of the Halbach arrangement of the permanent magnets in this invention;

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Magnetic levitation track; 2. Electromagnetic acceleration device; 1-1. Movable sleeper assembly; 1-2. Three-ring coil; 2-1. Magnetic levitation test piece; 2-2. First permanent magnet; 2-3. Second permanent magnet. Detailed Implementation

[0036] The present invention will now be described more clearly and completely with reference to the accompanying drawings. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0037] In one embodiment of the present invention, an electromagnetic acceleration system for a magnetic levitation track in an ultra-deep abandoned mine is provided, such as... Figure 1 As shown, it includes: a magnetic levitation track 1, an electromagnetic acceleration device 2, an energy recovery subsystem, and an intelligent control and safety subsystem.

[0038] Specifically, in this embodiment, the magnetic levitation track 1 adopts a modular design, as shown in Figure 2, consisting of multiple movable sleeper assemblies 1-1 forming parallel A / B guide rails, supporting dynamic adjustment of track gauge, and adapting to magnetic levitation test pieces 2-1 of different specifications.

[0039] Specifically, each movable sleeper assembly 1-1 is equipped with a three-ring coil 1-2, such as Figure 3 As shown, the magnetic levitation track 1 is embedded in the horizontal tunnel of the mine, utilizing the existing support structure of the mine to enhance stability and reduce construction costs.

[0040] Specifically, in this embodiment, the electromagnetic acceleration device 2, such as Figure 4 As shown, it includes: a magnetic levitation test piece 2-1 and a first permanent magnet 2-2 and a second permanent magnet 2-3 disposed on both sides of the magnetic levitation test piece 2-1.

[0041] The electromagnetic acceleration device 2 is positioned between the A and B rails. Based on the acceleration principle of electromagnetic rails, it ensures a uniform magnetic field distribution within the electromagnetic acceleration channel to reduce energy loss. A Hall sensor is also installed in the magnetic levitation track 1 to detect the position of the electromagnetic acceleration device 2.

[0042] Specifically, the first permanent magnet 2-2 and the second permanent magnet 2-3 employ a Halbach array, such as... Figure 5 As shown, this is used to enhance the air gap magnetic flux density. S and N represent the two poles. When the three-ring coil 1-2 is connected to an external power source, the magnetic field is excited by the current, which propels the carrier to accelerate along a vertical or inclined mine shaft, thus achieving high-speed transportation.

[0043] Specifically, in this embodiment, the energy recovery subsystem combines the mine's gravitational potential energy to store electrical energy during the downward acceleration process and release energy to assist in deceleration during the upward movement, thereby improving the energy efficiency ratio.

[0044] Specifically, in this embodiment, the intelligent control and safety subsystem integrates geomagnetic memory detection technology to monitor the stability of the track and mine structure in real time, preventing metal fatigue or geological risks. A fuzzy recognition algorithm is used to process the real-time data from the Hall sensor to optimize acceleration and braking strategies.

[0045] Furthermore, the control process of the magnetic levitation track in this embodiment includes two important stages: upward movement and levitation. The levitation stage includes maintaining front-to-back centering and left-to-right centering.

[0046] The upward movement is achieved through the interaction of the first permanent magnet 2-2, the second permanent magnet 2-3, and the three-ring coil 1-2; maintaining front-to-back centering is achieved by using the three-ring coil 1-2 to generate three magnetic fields in the front, middle, and rear, so that the magnetic levitation test piece 2-1 is suspended; maintaining left-to-right centering is achieved by connecting the three-ring coil 1-2 and using the current to generate thrust to push the magnetic levitation test piece 2-1 back to the center of the track.

[0047] Specifically, the electromagnetic acceleration system for the ultra-deep abandoned mine magnetic levitation track in this embodiment operates as follows:

[0048] 1. Upstream segment:

[0049] During operation, the upward movement of the magnetic levitation test piece 2-1 is achieved through the interaction of the first permanent magnet 2-2, the second permanent magnet 2-3, and the three-ring coil 1-2. The three-ring coil 1-2 is arranged on the A / B guide rails. The first permanent magnet 2-2 and the second permanent magnet 2-3 are respectively installed on both sides of the magnetic levitation test piece 2-1. According to the principle that like poles repel and unlike poles attract, the first permanent magnet 2-2, the second permanent magnet 2-3, and the three-ring coil 1-2 repel each other, and the magnetic levitation test piece 2-1 will move upward.

[0050] When the magnetic levitation test piece 2-1 reaches the next average position, the magnetic poles of the three-ring coil 1-2 are changed by the current. The magnetic levitation test piece 2-1 is still statically upward. By repeatedly controlling it in this way, the magnetic levitation test piece 2-1 will continue to move upward. The equilibrium position is the position where the electromagnetic force and gravity are balanced between the electromagnetic acceleration device and the A / B rails.

[0051] 2. Keep the front and back centered:

[0052] During operation, the magnetic levitation test piece 2-1 is centered at the front and back by the three-ring coil 1-2 generating three magnetic fields at the front, middle and back, so that the magnetic levitation test piece 2-1 is suspended at the front and back.

[0053] When the three-ring coil 1-2 is energized, it will generate three magnetic fields: front, middle and rear. When the magnetic levitation test piece 2-1 passes through the center of the figure-eight shape of the three-ring coil, it will not be affected. However, when the magnetic levitation test piece 2-1 moves forward, the three-ring coil 1-2 will apply a backward pulling force to the magnetic levitation test piece 2-1.

[0054] Similarly, when the magnetic levitation test piece 2-1 moves backward, the three-ring coil 1-2 will apply a forward pulling force to the magnetic levitation test piece 2-1, so that the magnetic levitation test piece 2-1 always stays in the center of the three-ring coil 1-2.

[0055] 3. Keep it centered horizontally:

[0056] During operation, if the magnetic field generated by the three ring coils 1-2 on the left and right sides of the middle of the magnetic levitation test piece 2-1 exerts equal force on the first permanent magnet 2-2 and the second permanent magnet 2-3, no current will be generated.

[0057] However, if it moves slightly to the right, the electromotive force of the three-ring coils 1-2 on both sides will change. At this time, the circuit will generate current, which will have a great influence on the magnetic field at the bottom of the three-ring coils 1-2. That is, the magnetic field on the right will become larger and the magnetic field on the left will become smaller. This will generate a leftward thrust, pushing the magnetic levitation test piece 2-1 back to the center of the track.

[0058] Similarly, if the magnetic levitation test piece 2-1 moves slightly to the left, the changing magnetic field will generate a rightward thrust, keeping the magnetic levitation test piece 2-1 in a position centered on the track.

[0059] Specifically, in this embodiment, the magnetic levitation test piece 2-1 stores electrical energy through an energy recovery subsystem during the downward acceleration process and releases energy to assist in deceleration during the upward process, thereby improving the energy efficiency ratio.

[0060] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. An electromagnetic acceleration system for a magnetic levitation track in an ultra-deep abandoned mine, characterized in that, include: Magnetic levitation track: Embedded in the horizontal tunnel of the mine, it uses the vertical depth of the mine to build an electromagnetic acceleration channel. It consists of multiple movable sleeper assemblies forming parallel A / B rails, and each movable sleeper assembly is equipped with three ring coils. Electromagnetic acceleration device: located between A / B guide rails, including a magnetic levitation test piece and two permanent magnets installed on both sides of the magnetic levitation test piece; the permanent magnets adopt a Halbach array to enhance the air gap magnetic flux density; Energy recovery subsystem: used for storing and releasing electrical energy during the operation of the magnetic levitation test piece, thereby improving the energy efficiency ratio; Intelligent control and safety subsystem: used to monitor the stability of the magnetic levitation track and mine structure in real time, and to optimize the control strategy for acceleration and braking of the magnetic levitation test piece.

2. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 1, characterized in that, The magnetic levitation track adopts a modular design, utilizes the original support structure of the mine to enhance stability, and dynamically adjusts the track gauge between the A / B guide rails to adapt to magnetic levitation test pieces of different specifications.

3. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 2, characterized in that, The three-ring coil is connected to an external power source. The magnetic field is excited by the current, which drives the magnetic levitation test piece to accelerate along a vertical or inclined mine shaft for high-speed transportation.

4. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 2, characterized in that, The electromagnetic acceleration device uses the electromagnetic rail acceleration principle to ensure a uniform distribution of the magnetic field within the electromagnetic acceleration channel, thereby reducing energy loss. A Hall sensor is also installed in the magnetic levitation track to detect the position of the electromagnetic acceleration device.

5. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 1, characterized in that, The intelligent control and safety subsystem integrates geomagnetic memory detection methods to monitor the stability of the track and mine structure in real time, prevent metal fatigue or geological risks, and uses fuzzy recognition algorithms to process Hall sensor data to optimize acceleration and braking strategies.

6. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 1, characterized in that, The control of the magnetic levitation track includes an upward phase and a suspension phase; the suspension phase includes maintaining front-to-back centered suspension and maintaining left-to-right centered suspension.

7. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 6, characterized in that, The upward movement is achieved through the interaction between a permanent magnet and a three-ring coil, as follows: Step 1.1: According to the principle of magnetic repulsion between like poles and attraction between unlike poles, the two permanent magnets installed on the magnetic levitation test piece and the three ring coils arranged on the A / B rails repel each other, controlling the upward movement of the magnetic levitation test piece; Step 1.2: When the magnetic levitation test piece reaches the next equilibrium position, the magnetic poles of the three-ring coil are changed by the current, and the magnetic levitation test piece continues to move upward statically. The equilibrium position is the position where the electromagnetic force and gravity are balanced between the electromagnetic acceleration device and the A / B guide rails. Step 1.3: Repeat steps 1.1 to 1.2 to keep the magnetic levitation test piece moving upward.

8. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 6, characterized in that, The goal of maintaining the front-to-back centered suspension is achieved by generating three magnetic fields (front, middle, and rear) after energizing a three-ring coil. The process is as follows: There is no effect when the magnetic levitation test piece passes through the center of the figure-eight shape; When the magnetic levitation test piece moves forward, the three-ring coils apply a backward pulling force to the magnetic levitation test piece; As the maglev test piece moves backward, the three-ring coil applies a forward pulling force to the maglev test piece, keeping it always in the center of the three-ring coil.

9. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 6, characterized in that, The levitation system, which maintains centered horizontally, is achieved through a three-ring coil connection. The current generates thrust to push the magnetic levitation test piece back to the center of the magnetic levitation track. The process is as follows: When the magnetic levitation test piece is in the middle of the magnetic levitation track, the magnetic field generated by the three ring coils on the left and right sides exerts equal force on the two permanent magnets, and no current is generated. When the magnetic levitation test piece is slightly to the right of the center of the magnetic levitation track, the electromotive force of the three-ring coils on both sides changes, and the coil circuit generates current, which affects the magnetic field at the bottom of the three-ring coil. The magnetic field on the right becomes larger and the magnetic field on the left becomes smaller, generating a leftward thrust that pushes the magnetic levitation test piece back to the center of the track. When the maglev test piece is slightly to the left of the center of the maglev track, the changing magnetic field generates a rightward thrust, keeping the maglev test piece in a centered position on the track.

10. The electromagnetic acceleration system for ultra-deep abandoned mine magnetic levitation tracks according to claim 1, characterized in that, The energy recovery subsystem, combined with the gravitational potential energy of the mine, stores electrical energy during the downward acceleration of the magnetic levitation test piece and releases energy to assist in deceleration during the upward movement.

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