Magnetic field shielding device of high-temperature superconducting coil

A high-temperature superconducting and shielding device technology, applied in superconducting magnets/coils, magnetic field/electric field shielding, coil manufacturing, etc. Effect

Inactive Publication Date: 2010-06-23
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The invention solves the problem that the current-carrying capacity of the high-temperature superconducting coil used as the armature winding in the high-temperature superconducting motor is limited by the external vertical magnetic field, and proposes a magnetic field shielding device for the high-temperature superconducting coil

Method used

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  • Magnetic field shielding device of high-temperature superconducting coil
  • Magnetic field shielding device of high-temperature superconducting coil

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specific Embodiment approach 1

[0008] Specific implementation mode 1: the following combination figure 1 , figure 2 , Figure 5 , Image 6 with Figure 7 This embodiment will be described in detail. The magnetic field shielding device of the high-temperature superconducting coil includes a cryostat 4 and a vacuum container 5. The high-temperature superconducting coil 1 is fixed in the cryostat 4, the cryostat 4 is fixed in the vacuum container 5, and the cryostat 4 communicates with Into liquid nitrogen, it also includes a first magnetic sheet 2 and a second magnetic sheet 3. The first magnetic sheet 2 is fixed above the axial direction of the high-temperature superconducting coil 1, and the second magnetic sheet 3 is fixed on the high-temperature superconductor. Below the coil 1 in the axial direction, the width B of the first magnetic conductive sheet 2 and the width b of the second magnetic conductive sheet 3 are both 1.1 to 1.5 times the thickness H of the high temperature superconducting coil 1.

[0009...

specific Embodiment approach 2

[0016] Specific implementation manner 2: the following combination figure 2 This embodiment will be described in detail. The difference between this embodiment and the first embodiment is that the first magnetic sheet 2 is fixed on the upper end of the high-temperature superconducting coil 1, and the second magnetic sheet 3 is fixed on the lower end of the high-temperature superconducting coil 1.

specific Embodiment approach 3

[0017] Specific implementation manner three: the following combination image 3 This embodiment will be described in detail. The difference between this embodiment and the first embodiment is that the first magnetic sheet 2 is fixed on the inner surface above the cryostat 4 shell, and the second magnetic sheet 3 is fixed inside the cryostat 4 below the shell. On the surface.

[0018] Compared with the second embodiment, the thickness B of the first magnetic sheet 2 and the thickness b of the second magnetic sheet 3 can be increased by more than 50%. The thicker the thickness of the magnetic sheet, the more the surface of the high-temperature superconducting coil 1 The smaller the vertical magnetic field distribution, therefore, the shielding effect of the high-temperature superconducting coil magnetic field shielding device described in this embodiment in the axial direction of the high-temperature superconducting coil 1 is higher than that of the high-temperature superconducting...

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Abstract

The invention relates to a magnetic field shielding device of a high-temperature superconducting coil, which solves the problem that the current carrying capacity of a high-temperature superconducting coil used as an armature winding in a high-temperature superconducting motor is limited by an additional vertical magnetic field. The magnetic field shielding device comprises a cryostat, a vacuum container, a first magnetic conduction sheet and a second magnetic conduction sheet, wherein the high-temperature superconducting coil is fixed in the cryostat; the cryostat is fixed in the vacuum container; liquid nitrogen is introduced into the cryostat; the first magnetic conduction sheet and the second magnetic conduction sheet are respectively fixed above and below the axial direction of the high-temperature superconducting coil; and the width of the first magnetic conduction sheet and the width of the second magnetic conduction sheet are 1.1-1.5 times of the thickness of the high-temperature superconducting coil. The device of the invention can enable the original vertical magnetic field of the surface of the high-temperature superconducting coil to be reduced by more than 50%, and is used for shielding the vertical magnetic field of the surface of the coil.

Description

Technical field [0001] The invention relates to a magnetic field shielding device for a high-temperature superconducting coil, in particular to a high-temperature superconducting coil sheath with a ferromagnetic shielding sleeve used in the stator armature winding of a full-high-temperature superconducting motor. Background technique [0002] With the development of high-temperature superconducting wire technology, superconductivity technology has brought a very far-reaching impact on economic development and social progress. High-temperature fully superconducting synchronous motors are widely used in marine electric propulsion systems, electric locomotive traction systems and other fields because of their high energy density, large single-machine limit capacity, high efficiency, small size, and light weight. In particular, when the armature winding adopts high-temperature superconducting coils, the motor has the characteristics of low loss during operation and can output large c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/06H01F41/04H05K9/00
Inventor 李立毅杨松曹继伟韩正男刘丽丽
Owner HARBIN INST OF TECH
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