Magnetic resonance superconducting coil winding method and magnetic resonance superconducting coil

Abstract

The invention discloses a magnetic resonance superconducting coil winding method and a magnetic resonance superconducting coil. The winding method comprises the steps that a plurality of superconducting layers are sequentially arranged outside a coil framework; each superconducting layer sequentially comprises a superconducting wire wound on the inner structure of the superconducting layer and a plurality of layers of first glass wool cloth wrapping the superconducting wire from inside to outside, and black glue is brushed outside the first glass wool cloth on the outermost layer in the superconducting layers; a binding wire is wound outside the outermost superconducting layer to form a binding wire layer; second glass wool cloth is wrapped outside the wire binding layer, and black glue isuniformly brushed outside the second glass wool cloth for curing to obtain the magnetic resonance superconducting coil. Different layers of superconducting wires are fixed by laying glass wool clothand brushing black glue. Compared with a vacuum grease immersion mode, the method provided by the invention has the advantages that gaps among the superconducting wires can be filled more fully; the fixing effect on the superconducting wires is better; the fixing reliability among the superconducting wires can be guaranteed; and the risk of quench caused by energy generated by energization stressdisplacement of the superconducting wires during excitation is reduced.

Description

technical field [0001] The invention relates to the technical field of magnetic resonance equipment, in particular to a method for winding a magnetic resonance superconducting coil and the magnetic resonance superconducting coil. Background technique [0002] At present, superconducting magnets have strict technical requirements for magnetic field stability. For example, clinical medical imaging requires that the magnetic field stability of MRI superconducting magnets are all less than 0.1ppm / h, so superconducting magnets all work in closed-loop operation mode, that is, After the excitation of the superconducting magnet is completed, the power supply and the current leads are removed, so that the MRI superconducting coil and the superconducting switch form a closed loop. Since the superconducting switch is in a superconducting state and the resistance of the superconducting joint is very small, the magnetic field of the MRI superconducting magnet does not decay significantly...

AI Technical Summary

Problems solved by technology

[0004] However, due to the poor fluidity of the resin in the vacuum fat impregnation, and there are copper plates with holes and binding wires around the superconducting wires, insufficient resin penetration may occur, resulting in the inability to effectively fix the superconducting wires and increasing the excitation time of the superconducting wires. The risk of quenching due to the energy generated by the displacement of the energized force

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