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Linear suspended propulsion system adopting high-temperature superconductive block magnet

A high-temperature superconducting and propulsion system technology, applied in propulsion systems, holding devices using magnetic attraction or thrust, electromechanical devices, etc., can solve the adverse effects of magnet performance and stability, increase the difficulty of permanent magnet processing and installation, and damage the magnet. performance and stability, etc., to achieve the effect of good magnetic concentration, easy installation, and reduced volume and weight

Inactive Publication Date: 2012-04-25
南京索普超导科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But so far, this type of maglev train is only propelled by conventional linear induction motors, so it is still difficult to get rid of the shortcomings of conventional linear motors explained above.
The requirement of the suspension system for the permanent magnetic track is that the permanent magnetic track provides a magnetic field that is as strong as possible and distributed according to a certain law. The existing technology is: the permanent magnetic track is mainly composed of permanent magnets and ferromagnetic objects. The magnetic field is gathered in the ferromagnetic object, thereby generating a strong magnetic field above the permanent magnet track; but at present, due to the complicated and difficult installation of the permanent magnet track composed of permanent magnets and ferromagnets, in order to stabilize the permanent magnets and ferromagnets, It is necessary to use bolts to penetrate the permanent magnet and ferromagnet horizontally and fasten them tightly, which not only increases the processing difficulty of the permanent magnet, but also destroys the magnetic circuit structure, and requires high installation accuracy; during operation, due to the long-term mutual friction between the permanent magnet and the bolt , will also damage the performance and stability of the magnet
[0005] Therefore, the above-mentioned background technology exists: the linear motor uses the primary as the mover and the secondary as the stator, and the mover must move together with the drag chain cable, which is inconvenient, the stroke is limited, and it is prone to failure; and the conventional permanent magnet linear motor There is a strong normal force between the primary and secondary of the synchronous motor. Linear guide rails need to be installed on both sides of the motor to maintain a stable air gap between the primary and secondary of the linear motor and maintain the sliding state of the mover, thereby increasing the Energy consumption, and it is difficult to meet the requirements of a linear levitation propulsion system that requires a large thrust; while the magnetic levitation mechanism needs to be fixed with transverse bolts penetrating the permanent magnet and the ferromagnet, which not only increases the difficulty of processing and installation of the permanent magnet, but also destroys the magnetic circuit structure, and will also adversely affect the performance and stability of the magnet during operation.

Method used

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  • Linear suspended propulsion system adopting high-temperature superconductive block magnet
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  • Linear suspended propulsion system adopting high-temperature superconductive block magnet

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019]Embodiment 1: The stator (primary) 1 of a linear synchronous motor is a three-phase winding with an iron core, the iron core (height × width) is 100 × 100 mm, the pole pitch is 45 mm, and the air gap length is 6 mm; the low temperature and constant temperature in the mover (secondary) 2 The device 2-1 is a (length×width×height) 250×100×82mm box with an open top, and the bottom of the box is provided with 8 inclined card slots corresponding to the magnets 2-2 of each block (horizontal 4 rows, vertical 2 row), the inclination angle of the bottom of each card slot is 36.9°, a limit bar 2-3 parallel to the bottom of the slot is set on both sides of the upper part of the slot to limit the vertical freedom of the block magnet, and a liquid nitrogen is set in the middle of each side Slots 2-6, 2-2 cases of high-temperature superconducting block magnets are set at an inclination, each magnet (length x width x height) is 36 x 33 x 24mm, and the inclination angle of the magnet is a...

Embodiment 2

[0021] Embodiment 2: Stator (primary) 1 of linear synchronous motor adopts hollow three-phase copper wire winding, and cryostat 2-1 (length×width×height) in mover (secondary) 2 is 250×100×82mm, box There are two slots (length x width x height) 180 x 33 x 30mm at the bottom for embedding the high-temperature superconducting bulk magnets 2-2 and high-permeability back irons 2-4, and the middle parts of the two side walls of the slot are also Let a cross section be (height × width) 12 × 5mm liquid nitrogen tank, high temperature superconducting block magnet 2-2. There are also 4 rows and 2 rows in the vertical direction. Each magnet 2-2 is magnetically charged to 1.2T by high-field DC electromagnet field cold magnetization. The conventional self-locking device is used to fix each magnet and the cryostat. 4 is (length × width × height) 180 × 70 × 10mm rectangular plate body; while the track surface width in the permanent magnet track 3 is 76mm, the effective surface width is 64mm,...

Embodiment 3

[0023] Embodiment 3: the stator 1 of the present embodiment linear synchronous motor, the mover 2 and the suspension body 4 of the magnetic levitation mechanism, the slide bar 7 and its chute 7-1 are all the same as the embodiment 1; the track surface in the permanent magnet track 3 Width 76mm, effective surface width 64mm, permanent magnet 3-3, upper surface width 20mm, lower surface width 24mm, two (axial) sides and upper surface meet each other with a cross section of (height × width) 2 × 2mm Groove 3-6, the ferromagnet 3-2 height of magnetism gathering is 20mm, the upper surface width of left and right sides of magnetism gathering ferromagnet is 8mm, the width of lower surface is 6mm, and the cross-section of the upper clamping strip is also (height × width) 2×2mm, the cross-section of the ferromagnet used in the central part adopts a “T”-shaped structure, and the cross-section of the clips on both sides is also (height×width) 2×2mm.

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Abstract

The invention belongs to a linear suspended propulsion system adopting a high-temperature superconductive block magnet, comprising a linear motor propulsion mechanism, a magnetic suspension mechanism, a sliding frame and a sliding groove. The primary of the linear motor propulsion mechanism is used as a stator and the secondary of the linear motor propulsion mechanism adopts a high-temperature superconductive block magnet as a mover; and the magnetic suspension mechanism comprises a permanent magnet rail and a high-temperature superconductive block magnet. In the invention, the block magnet used as the mover in the invention is slantways arranged to reduce normal force thereof; a permanent magnet in the permanent magnet rail is connected with a ferromagnetic body for magnetic concentration in an embedded type or a clamping type so that the linear suspended propulsion system has great propulsion force, high velocity and efficiency, low energy consumption and high operation reliability without a guiding control device, can realize suspension stability and friction-free suspended propulsion with simple control; the electric motor mover does not need carry a towline-type cable; the permanent magnet rail is simple, convenient and reliable to mount; and a magnetic field above the rail has high strength, good magnetic concentrating effect, and the like. The invention overcomes the defects of the prior art, i.e. the linear motor has small propulsion and strong normal force, the permanent magnet rail has poor mounting process and operation stability, and the like.

Description

technical field [0001] The invention belongs to the technical field of application of high-temperature superconducting magnets, in particular to a linear levitation propulsion system using high-temperature superconducting block magnets; the levitation propulsion system can be widely used as a magnetic levitation and propulsion system of transport machinery and maglev trains. Background technique [0002] The linear magnetic levitation propulsion system that has been adopted so far using the high temperature superconducting magnetic levitation mechanism includes a linear motor propulsion mechanism composed of a mover and a stator, a magnetic levitation mechanism composed of a permanent magnet guide rail and a high temperature superconducting block magnet, and a linear motor and a magnetic levitation mechanism. The support rod between the magnetic levitation mechanisms on both sides. in: [0003] In the linear motor, the linear induction motor is widely used, because its seco...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02K41/03H02N15/00B60L13/04B60L13/10
Inventor 金建勋郑陆海
Owner 南京索普超导科技有限公司