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Device for improving excitation efficiency of superconducting closed coil

A technology of closed coils and superconducting coils, applied in superconducting magnets/coils, the usage of superconducting elements, devices that can switch between superconducting and normal conducting states, etc., can solve problems such as complex processes and difficult joints

Active Publication Date: 2021-06-25
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The sapphire-based REBCO superconducting switch process is relatively complicated and it is difficult to make joints with some superconducting coils

Method used

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  • Device for improving excitation efficiency of superconducting closed coil
  • Device for improving excitation efficiency of superconducting closed coil
  • Device for improving excitation efficiency of superconducting closed coil

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Embodiment Construction

[0034] The following describes several preferred embodiments of the present invention with reference to the accompanying drawings, so as to make the technical content clearer and easier to understand. The present invention can be embodied in many different forms of embodiments, and the protection scope of the present invention is not limited to the embodiments mentioned herein.

[0035] In the drawings, components with the same structure are denoted by the same numerals, and components with similar structures or functions are denoted by similar numerals. The size and thickness of each component shown in the drawings are shown arbitrarily, and the present invention does not limit the size and thickness of each component. In order to make the illustration clearer, the thickness of parts is appropriately exaggerated in some places in the drawings.

[0036] Such as figure 1 As shown, it is a working principle diagram of using a superconducting continuous current switch (abbrevia...

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Abstract

The invention discloses a device for improving excitation efficiency of a superconducting closed coil, and belongs to the field of excitation of superconducting closed coils. The device comprises a section of superconducting tape connected with the excitation superconducting coil, wherein the superconducting tape comprises a conductive layer, a superconducting layer and a substrate, and the conductive layer is configured to have a pattern structure for blocking current from passing through. The conductive layer is a single layer or a plurality of layers. The conductive layer is made of copper and / or silver. The superconducting layer is made of REBCO. The device also includes a buffer layer, and the buffer layer is made of a dielectric material and is substantially insulating. The pattern structure includes a geometrical shape, preferably a slot. The slot is configured in a plane of the conductive layer, and the length of the slot is equal to or less than the width of the substrate. The slot is configured in a plane of the conductive layer, and the depth of the slot is the same as or less than the thickness of the conductive layer. The device excites the closed superconducting coil through an external power supply or a flux pump. The surface of the device is covered with an insulating or weak conductive material. According to the device, the excitation efficiency of the superconducting closed coil is improved in a stable and efficient mode.

Description

technical field [0001] The invention relates to the field of excitation of superconducting closed coils, in particular to a device for improving the excitation efficiency of superconducting closed coils. Background technique [0002] Superconducting closed coil excitation technology is one of the key technologies in the application of superconducting magnets, and it is used in magnetic resonance imaging, nuclear magnetic resonance spectrometers, high-speed superconducting magnetic levitation and other fields. Ideally, the normal state resistance of the continuous current switch should be infinite, but in reality, the continuous current switch is divided into the normal state (or resistance state) when it is on or the non-resistance state when it is off. universal. In normal state, the resistance should be large enough, and the current flowing through the continuous current switch should not be greater than 10% of the operating current of the coil. Since the continuous curr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F6/06H01F6/00H01L39/16H10N60/20H10N60/30
CPCH01F6/06H01F6/00H10N60/30Y02E40/60
Inventor 黄振
Owner SHANGHAI JIAO TONG UNIV
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