A kind of wound magnet and winding method based on high temperature superconducting cable

Abstract

The invention provides a wound magnet based on a high-temperature superconducting cable, which includes a skeleton with a cylindrical structure, a first end plate and a second end plate arranged at both ends of the skeleton, and a gap between the first end plate and the second end plate. A cable is wound on the surface of the skeleton, and the cable includes a cylindrical high-conductivity core material, on which a single or multiple ReBCO superconducting tapes are wound to form a layered superconducting structure, and the axial end of the skeleton is provided with Two terminals connected to the two ends of the cable respectively. The invention further discloses the winding method of the magnet. The advantages of the present invention are: the cable uses a high-conductivity material as the core material, reduces the current loss, reduces the electric heat loss, and is suitable for high-intensity current; uses ReBCO spiral winding to form a layered superconducting structure, which overcomes the single-layer winding in the prior art The limitation of the structure on the current intensity can be used for high-intensity currents, so that high-intensity magnetic fields can be generated.

Description

technical field [0001] The invention relates to the technical field of high-field interpolation magnets, in particular to a winding magnet based on a high-temperature superconducting cable and a winding method. Background technique [0002] Strong magnetic field, like extremely low temperature and ultra-high pressure, is one of the most important extreme conditions for modern scientific experiments. It provides a new way for the research of physics, chemistry, materials and biology, and plays an important role in discovering and understanding new phenomena and revealing new laws. effect. With the continuous deepening of research in various disciplines, the requirements for the strength of the magnetic field of each research system are getting higher and higher, and the requirements for its space size are also increasing. [0003] Currently widely used superconducting magnets are mainly composed of NbTi and Nb 3 Sn low-temperature superconducting materials, but its applicat...

AI Technical Summary

Problems solved by technology

In comparison, ReBCO superconducting materials have a high-strength nickel-based metal substrate and high mechanical strength, so they have better operational stability under high field; however, ReBCO superconducting materials usually have a strip structure. The research on its interpolation magnets mainly focuses on pie-type or solenoid magnets directly wound by a single strip, such as a support skeleton for adjusting the inter-turn resistance of non-insulated superconducting magnets disclosed in the invention patent with the publication number 109950018A. The method of use; that is, the skeleton for the pie magnet is disclosed; because the operating current of a single strip is limited, the strength of the magnet is not high

In addition, the ReBCO superconducting tape has a layered structure, and it is prone to electromagnetic stress pulling under high fields to cause delamination of the superconducting tape, which will cause damage to the magnet and cause it to fail to operate.

In order to avoid this phenomenon, the central aperture design of ReBCO cake magnets is generally relatively small under high magnetic field, which also brings certain limitations to its application in high field and large aperture research systems.

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