Electromagnet with superconducting strip, electromagnetic switch and switching method
A technology of superconducting strips and electromagnets, applied in superconducting magnets/coils, electrical equipment for manipulating turnouts or line breakers, roads, etc., to achieve the effect of avoiding unsustainable work
Active Publication Date: 2019-07-12
SOUTHWEST JIAOTONG UNIV
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Problems solved by technology
[0004] The object of the present invention is to provide an electromagnet for an electromagnetic turnout, an electromagnetic turnout and a switching method, so as to solve the problem that the magnetic flux density generated by the electromagnetic turnout matches the magnetic flux density of the permanent magnet track
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[0022] The present invention will be described in further detail below through specific embodiments in conjunction with the accompanying drawings.
[0023] It is difficult for the existing iron core to surround the coil to generate a magnetic flux density matching that of the permanent magnet, and the heating of the energized coil makes the electromagnetic switch unable to work continuously. Therefore, the invention provides an electromagnet with a superconducting tape, an electromagnetic switch and a switching method. Specifically:
[0024] Electromagnets for electromagnetic turnouts, including: iron core, superconducting strip and low-temperature container; the iron core contains four branches, and the four branches are arranged side by side from left to right. The other ends of the branches come together to extend out of magnetic pole A, and the other ends of the two branches on the right are brought together to extend out of magnetic pole B; each branch is wound with a su...
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The invention relates to electromagnetic switch technology, in particular to an electromagnet with a superconducting strip, an electromagnetic switch using the electromagnet and a switch method. The electromagnet includes: iron core, superconducting strip and low-temperature container; the iron core contains four branches, and the four branches are arranged side by side from left to right, one end of the same side is brought together, and the other end of the two left branches is After converging, the pole A is extended, and the other ends of the two branches on the right are converging and extending out the pole B; each branch is wound with a superconducting tape, and four superconducting tapes are connected; the two branches on the left are connected The energization direction of the superconducting tape is different from that of the superconducting tape on the two branches to the right; the superconducting tape is placed in the cooling liquid of the cryogenic container. The invention winds the superconducting tape on the iron core, and because of the high critical current density of the superconducting tape, it can generate a larger magnetic flux density, which is enough to provide a magnetic field for the vehicle to suspend. A cryogenic liquid is used to provide a cryogenic environment for the superconducting tape.
Description
technical field [0001] The invention relates to electromagnetic switch technology, in particular to an electromagnet with a superconducting strip, an electromagnetic switch using the electromagnet structure, and a switching method using the electromagnetic switch. Background technique [0002] At present, there are few studies on electromagnets used in electromagnetic turnouts. The article "A Turnout Switch for a Superconductively Levitated Linear Transport System" describes the relevant research progress on electromagnets used in electromagnetic turnouts. The electromagnet generates a magnetic field by energizing the coil, and uses an iron yoke to gather the magnetic field lines to the magnetic poles (that is, the track surface), thereby generating a specific magnetic field required to realize left or right rotation. [0003] The magnetic flux density generated by the existing electromagnet cannot reach the magnitude of the permanent magnet magnetic flux density, which caus...
Claims
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IPC IPC(8): H01F6/00H01F6/04E01B25/34B61L5/06
CPCB61L5/067E01B25/34H01F6/00H01F6/04
Inventor 邓自刚李彦兴郑珺张娅
Owner SOUTHWEST JIAOTONG UNIV