Patent ID: 11904729
Assignee: HEFEI INSTITUTES OF PHYSICAL SCIENCE, CHINESE ACADEMY OF SCIENCES
Field: Transport (Mechanical engineering)
Classification: CPC B  H  Y | IPC B  H

Claim 0:
1. A superconducting eddy-current brake for a high-speed train, comprising a pair of superconducting magnet units with alternate arrangement of N and S poles, and a cryogenic system;
wherein the superconducting magnet units are fixed on a bottom of a bogie of the high-speed train; and an air gap is formed between the superconducting magnet units and a top surface of a guide rail below the bogie;
the cryogenic system is provided on the bogie of the high-speed train;
each of the superconducting magnet units comprises a superconducting container; wherein the superconducting container is embedded with a coil case, a thermal shield and a Dewar successively from inside to outside;
the coil case is filled with liquid helium; a liquid helium inlet and a liquid helium outlet are provided on the coil case; a superconducting coil is provided in the coil case and is immersed in the liquid helium; a coil terminal inlet and a coil terminal outlet are provided on the coil case;
the thermal shield has a vacuum environment therein; a liquid nitrogen inlet pipe and a liquid nitrogen outlet pipe are provided on an outer wall of the thermal shield; a liquid nitrogen inlet and a liquid nitrogen outlet respectively corresponding to the liquid nitrogen inlet pipe and the liquid nitrogen outlet pipe are provided on the thermal shield;
the cryogenic system comprises a liquid nitrogen storage tank and a liquid helium storage tank; an outlet of the liquid helium storage tank is connected with the liquid helium inlet of the superconducting container of each of the superconducting magnet units; and an outlet of the liquid nitrogen storage tank is connected with the liquid nitrogen inlet of the superconducting container for each of the superconducting magnet units.