Suspension type electromagnetic propulsion device and construction method

Abstract

The invention discloses a suspension type electromagnetic propulsion device and a construction method. The suspension type electromagnetic propulsion device comprises two rails which are arranged in parallel, a driving coil and a suspension coil are oppositely arranged on the inner sides of the two rails, a plurality of driving coil mounting grooves are formed in the inner sides of the rails in the length direction of the rails at intervals, and the driving coil mounting grooves are parallel to the cross sections of the rails. The driving coil is vertically installed in the driving coil installation groove, the multiple suspension coils are installed on the inner side of the track in the length direction of the track at intervals, and the driving coil installation groove and the driving coil are arranged between the suspension coils. The track is simplified, and the driving coil is simple in assembly process and convenient to replace; when the polar distance is large, waste of transverse edges of the driving coil can be effectively reduced, and the utilization rate of the driving coil is improved.

Description

Technical Field

[0001] The present invention relates to a maglev train, and more particularly to a suspension type electromagnetic propulsion device and a construction method thereof. Background Art

[0002] The superconducting maglev train realizes the suspension, guidance and propulsion of the vehicle by means of the non-contact electromagnetic force between the track and the vehicle body, breaking through the constraints of the wheel-rail adhesion relationship and the pantograph-catenary current collection relationship in the traditional train, and having the advantages of large suspension air gap, self-stable suspension and guidance, high floating resistance ratio, low energy consumption, high efficiency, etc., which is one of the most potential technical routes for realizing higher speed rail transit. The suspension, guidance and driving force of the superconducting maglev train come from the interaction between the on-vehicle superconducting magnet and the ground coil on the track side. Among them, the ground coil can be divided into a driving coil and a suspension coil, which provide driving force and suspension and guidance force respectively.

[0003] However, the driving coil and the suspension coil installed on the track side are usually arranged in an inner and outer double layer. First, a layer of continuously arranged driving coils is installed on the inner layer of the track, and then a layer of continuously arranged figure-eight suspension coils is installed on the outer layer. When the driving coil needs to be replaced, it is necessary to first disassemble the figure-eight suspension coil on the surface and then install and replace the driving coil, making the replacement of the driving coil very inconvenient. In addition, the generation of the driving force is mainly due to the interaction between the magnetic field component in the direction perpendicular to the track side and the vertical current in the driving coil. The vertical sides of the driving coil will provide the main electromagnetic driving force, and the horizontal arrangement cannot effectively utilize its horizontal sides, increasing its construction cost.

[0004] Therefore, the ring-shaped coil for high-speed maglev electromagnetic propulsion can improve the coil utilization efficiency under large pole pitch, simplify its installation process, facilitate replacement, and has higher structural strength and better heat dissipation performance. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that, aiming at the problem that the double-layer arrangement structure of the suspension and driving coils of the existing high-speed maglev electromagnetic propulsion device causes inconvenience in replacement work, the present invention provides a suspension type electromagnetic propulsion device and a construction method thereof that can simplify the coil installation and replacement process, and improve the coil utilization efficiency, structural strength and heat dissipation performance of the driving coil.

[0006] To solve the above technical problems, the present invention adopts the following technical solutions:

[0007] A suspension electromagnetic propulsion device includes two tracks arranged in parallel with each other. Driving coils and suspension coils are relatively arranged on the inner sides of the two tracks. Its structural characteristics are as follows: A number of driving coil mounting grooves are spaced along the length direction of the inner side of the track. The driving coil mounting grooves are arranged parallel to the cross-section of the track. The driving coils are vertically installed in the driving coil mounting grooves. And a number of the suspension coils are spaced along the length direction of the inner side of the track. The driving coil mounting grooves and the driving coils are arranged between the suspension coils.

[0008] A further improvement of the above solution is that the vertical sides of the driving coils and the suspension coils are in the same vertical plane.

[0009] A further improvement of the above solution is that the two tracks are on both sides of a U-shaped concrete track base.

[0010] A further improvement of the above solution is that the suspension coils are in an "8" shape.

[0011] A further improvement of the above solution is that threaded holes are provided on the inner side of the track, and the suspension coils are installed on the inner side of the track through mechanical fasteners and the threaded holes.

[0012] A further improvement of the above solution is that the suspension electromagnetic propulsion device further includes a main power supply and an inverter. The main power supply and the inverter are connected to the driving coils through cables.

[0013] A further improvement of the above solution is that the suspension electromagnetic propulsion device further includes a vehicle body, a suspension frame, a cryogenic container, a superconducting magnet, and a superconducting magnet excitation power supply. The vehicle body and the suspension frame are elastically connected through secondary suspension. The superconducting magnet is arranged in the cryogenic container and is rigidly connected to both sides of the framework of the suspension frame. The cryogenic container provides a cooling environment for the superconducting magnet through a refrigerator. The superconducting magnet excitation power supply is connected to the superconducting magnet through a cable to excite the superconducting magnet.

[0014] A further improvement of the above solution is that the superconducting magnets are symmetrically arranged on both sides of the framework of the suspension frame, and the pole pitch of the superconducting magnets corresponds to the pole pitch of the driving coils.

[0015] Based on the same inventive concept, the present invention also provides a method for constructing a suspension electromagnetic propulsion device. The suspension electromagnetic propulsion device is the suspension electromagnetic propulsion device. The specific construction method includes the following steps:

[0016] Step 1: Construct a concrete track, and install a detachable side wall panel on the inner side wall of the track for the installation of the suspension coils. Grooves are processed on the detachable side wall panel at a certain pole pitch. The grooves are opposite to the driving coil mounting grooves for the installation of the driving coils.

[0017] Step 2: Install the levitation coil on the detachable side wall panel inside the track through threaded fasteners;

[0018] Step 3: Vertically insert the drive coil into the grooves and drive coil installation slots on both sides of the track;

[0019] Step 4: When the train is running, inject three-phase alternating current into the drive coil to generate a traveling magnetic field. The traveling magnetic field realizes the propulsion of the train through the interaction with the on-vehicle superconducting magnet.

[0020] A further improvement of the above solution is that the arrangement of the drive coil and the levitation coil and the three-phase alternating current power supply method are as follows: when the levitation coil is configured with a 60-degree pole pitch, one superconducting magnet corresponds to 6 levitation coils, and a drive coil is arranged every other levitation coil. A-phase, -C-phase, B-phase, -A-phase, C-phase, and -B-phase alternating currents are sequentially injected into each drive coil, and the phases of A, B, and C are 120 degrees out of phase with each other; when the levitation coil is configured with a 120-degree pole pitch, one superconducting magnet corresponds to 3 levitation coils, and a drive coil is arranged every two levitation coils. A-phase, B-phase, and C-phase alternating currents are sequentially injected into each drive coil, and the phases are 120 degrees out of phase with each other.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] 1. When the traditional drive coil and levitation coil are arranged in a double layer, it is necessary to configure the drive coil first during the production of the concrete track, and then configure the figure-eight levitation coil on it, which brings many cumbersome procedures to the processing of the U-shaped concrete track. When producing the concrete track of the present invention, only drive coil installation slots need to be opened at the specified positions on both side walls, so that the drive coil installation method of the present invention can greatly simplify the structure and processing technology of the U-shaped concrete track;

[0023] 2. When installing the drive coil of the present invention, only need to insert the drive coil into the drive coil installation slot on the side wall of the U-shaped concrete track to complete the installation of the drive coil. The installation is convenient, and the drive coil and the levitation coil of the present invention are installed relatively independently, which facilitates the daily maintenance and replacement of the drive coil;

[0024] 3. The generation of the propulsion force of the high-speed magnetic levitation electromagnetic propulsion device of the present invention is mainly due to the interaction between the magnetic field component perpendicular to the side walls on both sides of the track of the superconducting magnet and the vertical side current of the drive coil. When the pitch of the drive coil is relatively large, in the traditional double-layer coil arrangement structure, the drive coil is arranged parallel to the track side wall and only its vertical side can be utilized, and the longer horizontal side cannot be effectively utilized. By inserting the drive coil into the side wall of the U-shaped concrete track, the present invention can effectively reduce the waste of the horizontal side and improve the coil utilization rate under large pole pitches;

[0025] 4. The driving coil of the present invention is installed in the driving coil installation groove on the side wall of the track. Compared with the traditional fixing method using threaded fasteners, the supporting area of the driving coil installation groove is larger, and the structural strength is improved;

[0026] 5. In the traditional double-layer layout structure, there is a certain air gap between the suspension coil and the driving coil. However, in the present invention, the driving coil is installed in the driving coil installation groove on the side wall of the track (cast by concrete). The contact area between the driving coil and the concrete is larger, and there is no air gap, which is more conducive to heat conduction and heat dissipation;

[0027] 6. The driving coil and the suspension coil of the present invention are installed in the same vertical plane, making the driving coil closer to the on-vehicle superconducting magnet and more efficient. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0029] Figure 1 It is the schematic diagram of the principle of the present invention.

[0030] Figure 2 It is the schematic structural diagram of the driving coil of the present invention installed in the track.

[0031] Figure 3 It is the structural diagram of the vehicle system of the present invention.

[0032] Figure 4 It is the structural diagram of the line track system of the present invention.

[0033] Figure 5 It is the structural diagram of the control system of the present invention.

[0034] Figure 6 It is the topological configuration diagram of the driving coil and the suspension coil of the present invention, where a is the layout diagram of the suspension coil with a 60-degree pole pitch, and b is the layout diagram of the suspension coil with a 120-degree pole pitch.

[0035] In the figure: 1 - driving coil; 2 - suspension coil; 3 - superconducting magnet; 4 - air spring; 5 - suspension framework; 6 - vehicle body; 7 - cryogenic container; 8 - track; 9 - main power supply; 10 - inverter; 11 - superconducting magnet excitation power supply. DETAILED DESCRIPTION OF THE INVENTION

[0036] The following further describes the present invention in conjunction with specific preferred embodiments, but does not limit the protection scope of the present invention thereby.

[0037] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. These are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0038] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] Please refer to Figure 1 - Figure 5 , an embodiment of the suspension electromagnetic propulsion device for the high-speed maglev train (maglev train with a speed of 400 km / h to 600 km / h) of the present invention includes three parts: a vehicle system, a track system, and a drive control system. The drive coils 1 and suspension coils 2 in the track system are installed on both sides of the U-shaped concrete track 8 through fixing devices. When the vehicle runs at a speed lower than the suspension speed, the vehicle is connected to the track system through rubber wheels. When the vehicle reaches the suspension speed, the vehicle system is connected to the track system through the interaction between the superconducting magnet 3 and the drive coils 1 and suspension coils 2. The drive control system is connected and controlled to the track system through a cable.

[0040] As Figure 3 shown, the vehicle system includes main components such as a car body 6, a suspension frame 5, and a superconducting magnet 3. The superconducting magnet 3 is arranged in a cryogenic container 7 and is rigidly connected to both sides of the suspension frame 3. Two superconducting magnets 3 are arranged on each side. The cryogenic container 7 provides a cooling environment for the superconducting magnet 3 through a refrigerator and energizes the superconducting magnet 3 through a superconducting magnet excitation power supply 11. The car body 6 is elastically connected to the suspension frame 5 through an air spring 4.

[0041] As Figure 4As shown in the figure, the track system includes a drive coil 1, a suspension coil 2, and a U-shaped concrete track 8. The figure-eight suspension coil 2 is installed on the inner surface of the side walls on both sides of the U-shaped concrete track 8 through mechanical fasteners, and is equipped with detachable threaded holes; the drive coil 1 is vertically inserted into the drive coil installation groove reserved on the U-shaped concrete track 8, and the drive coil installation groove is located within the gap of the suspension coil 2. Since the closer the drive coil 1 is to the superconducting magnet 3, the higher the drive efficiency, in this embodiment, the vertical side of the drive coil 1 and the suspension coil 2 are in a vertical plane to improve the drive efficiency of the drive coil 1.

[0042] As Figure 5 shown, the drive control system mainly consists of a main power supply 9, an inverter 10, and a superconducting magnet excitation power supply 11. The main power supply 9 and the inverter 10 are connected to the drive coil 1 through cables. The superconducting magnet excitation power supply 11 is connected to the superconducting coil 3 through a cable.

[0043] When the train is running, the main power supply 9 and the inverter 10 inject three-phase alternating current into the drive coil 1 through cables to generate a traveling magnetic field, and the traveling magnetic field generates a propulsive force through interaction with the superconducting magnet 3 to achieve the propulsion of the train.

[0044] The suspended electromagnetic propulsion device for a high-speed maglev train of the present invention can be applied to a superconducting electric maglev propulsion system, and the specific construction steps are as follows:

[0045] Step 1: Construct the U-shaped concrete track 8, install detachable side wall panels on the track side walls for the installation of the figure-eight suspension coil 2, and process grooves on the detachable side wall panels at a certain pole pitch. The grooves are opposite to the drive coil installation grooves for the installation of the drive coil;

[0046] Step 2: Install the figure-eight suspension coil 2 on the detachable side wall panels on the inner surfaces of the side walls on both sides of the U-shaped concrete track 8 through threaded fasteners;

[0047] Step 3: Vertically insert the drive coil 1 into the grooves on both sides of the track 8 and the drive coil installation grooves, and make the vertical side of the drive coil 1 and the suspension coil 2 in a vertical plane;

[0048] Step 4: When the train is running, inject three-phase alternating current into the drive coil to generate a traveling magnetic field, and the traveling magnetic field realizes the propulsion of the train through interaction with the on-vehicle superconducting magnet.

[0049] The following gives two feasible arrangements of the drive coil 1 and the suspension coil 2 and three-phase alternating current power supply methods: When the suspension coil 2 is configured at a 60-degree pole pitch, one superconducting magnet 3 corresponds to 6 figure-eight suspension coils 2, and the drive coil arrangement is as Figure 6(As shown in (a), a driving coil 1 is arranged every other levitation coil 2, and alternating currents of phase A, -C phase, B phase, -A phase, C phase, and -B phase are sequentially injected into each driving coil 1. The phases of the three phases A, B, and C are 120 degrees out of phase with each other. When the figure-eight levitation coils 2 are configured with a pole pitch of 120 degrees, one superconducting magnet 3 corresponds to three figure-eight levitation coils 2, and the driving coils 1 are arranged as shown in Figure 6 (b). A driving coil 1 is arranged every two levitation coils 2, and alternating currents of phase A, B phase, and C phase are sequentially injected into each driving coil 1, and the phases are 120 degrees different from each other.

[0050] As described above, the above are only specific implementation schemes of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present invention by using the above-disclosed technical content, or modify it into an equivalent embodiment with equivalent changes. Therefore, any simple modification, equivalent change, and modification made to the above embodiments based on the technical essence of the present invention without departing from the technical solution of the present invention shall fall within the protection scope of the technical solution of the present invention.

Claims

1. A suspended electromagnetic propulsion device, comprising two tracks arranged parallel to each other, with a driving coil and a suspension coil arranged opposite to each other on the inner sides of the two tracks, characterized in that: A plurality of drive coil installation grooves are provided at intervals on the inner side of the track along the length direction of the track, the drive coil installation grooves are arranged parallel to the cross section of the track, the drive coils are vertically installed in the drive coil installation grooves, and a plurality of suspension coils are installed at intervals on the inner side of the track along the length direction of the track, and the drive coil installation grooves and the drive coils are arranged between the suspension coils.

2. The suspended electromagnetic propulsion device according to claim 1, characterized in that: The vertical side of the driving coil and the suspension coil are located on the same vertical plane.

3. The suspended electromagnetic propulsion device according to claim 1, characterized in that: The two tracks are two sides of a U-shaped concrete track base.

4. The suspended electromagnetic propulsion device according to claim 1, characterized in that: The suspension coil is in an "8" shape.

5. The suspended electromagnetic propulsion device according to claim 1, characterized in that: The inner side of the track is provided with threaded holes, and the suspension coil is installed on the inner side of the track through mechanical fasteners and the threaded holes.

6. The suspended electromagnetic propulsion device according to claim 1, characterized in that: It also includes a main power supply and an inverter, and the main power supply and the inverter are connected to the driving coil through a cable.

7. The suspended electromagnetic propulsion device according to claim 1, characterized in that: It also includes a vehicle body, a suspension frame, a cryogenic container, a superconducting magnet and a superconducting magnet excitation power supply. The vehicle body and the suspension frame are elastically connected through a two-system suspension. The superconducting magnet is arranged in the cryogenic container and rigidly connected to both sides of the frame of the suspension frame. The cryogenic container provides a cooling environment for the superconducting magnet through a refrigerator. The superconducting magnet excitation power supply is connected to the superconducting magnet through a cable to excite the superconducting magnet.

8. The suspended electromagnetic propulsion device according to claim 7, characterized in that: The superconducting magnets are symmetrically arranged on both sides of the suspension frame, and the pole pitch of the superconducting magnet corresponds to the pole pitch of the driving coil.

9. A method for constructing a suspended electromagnetic propulsion device, characterized in that: The suspended electromagnetic propulsion device is the suspended electromagnetic propulsion device according to any one of claims 1 to 8, and its construction method specifically comprises the following steps: Step 1: construct a concrete track, and install a removable side wall panel on the inner wall of the track for installing the suspension coil, and process a groove on the removable side wall panel according to a certain pole pitch, wherein the groove is opposite to the drive coil installation groove for installing the drive coil; Step 2: Install the suspension coil on the removable side wall panel on the inside of the track using threaded fasteners; Step 3: Insert the drive coil vertically into the grooves on both sides of the track and the drive coil installation slot; Step 4: When the train is running, three-phase alternating current is injected into the driving coil to generate a traveling wave magnetic field, which propels the train through interaction with the on-board superconducting magnet.

10. The method for constructing a suspended electromagnetic propulsion device according to claim 9, characterized in that: The arrangement of the drive coil and the suspension coil and the three-phase AC power supply method are as follows: when the suspension coil is arranged at a pole pitch of 60 degrees, one superconducting magnet corresponds to 6 suspension coils, and a drive coil is arranged every other suspension coil, and A phase, -C phase, B phase, -A phase, C phase, -B phase AC are sequentially injected into each drive coil, and the phase difference between the three phases A, B, and C is 120 degrees; when the suspension coil is arranged at a pole pitch of 120 degrees, one superconducting magnet corresponds to 3 suspension coils, and a drive coil is arranged every two suspension coils, and A phase, B phase, and C phase AC are sequentially injected into each drive coil, and the phase difference between each phase is 120 degrees.

Images