Superconducting Coil Groove Layout for Precise MRI Wire Positioning
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Solution Overview
Problem
Conventional methods face difficulties in arranging superconducting wires to achieve a desired coil shape in superconducting coils for MRI apparatuses, leading to challenges in obtaining a precise and uniform magnetic field.
Innovation Solution
The superconducting coil design incorporates a winding frame with strategically placed spacers featuring spiral grooves and communication grooves, allowing for the precise winding of superconducting wire layers to form desired coil groups, enabling a desired coil shape and improved magnetic field uniformity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Shape
If a superconducting wire is laminated and wound around a winding frame, then the coil structure can be formed, but it is difficult to arrange the superconducting wire at a desired position and provide a winding space, resulting in inability to obtain a desired coil shape
Solution Approach 1:
The winding frame is divided into multiple independent winding grooves (first winding groove, second winding groove, third winding groove, fourth winding groove) that are spatially separated. Each groove can independently guide the superconducting wire to form specific coil sections, allowing precise positioning and flexible coil shape design while simplifying the manufacturing process.
Solution Approach 2:
Communication grooves (first communication groove, second communication groove) are introduced as intermediary structures to connect the separated winding grooves. These communication grooves enable the superconducting wire to transition between different winding grooves and layers, facilitating complex coil shape formation while maintaining ease of wire arrangement.
2Strength
If multiple layers of superconducting wire are wound to form coil groups, then the magnetic field strength can be increased, but the coil shape control and winding space management become more complex
Solution Approach 1:
The coil structure is segmented into multiple coil groups (first coil group, second coil group) with each group containing specific layers wound in designated winding grooves. This segmentation allows independent optimization of each coil group's magnetic field contribution while simplifying the overall winding process through standardized groove patterns.
Solution Approach 2:
The patent utilizes three-dimensional spatial arrangement with spacers positioned at different heights (first spacer, second spacer) to create vertical separation between wire layers. This dimensional organization allows multiple layers to be stacked efficiently while maintaining clear access for wire winding and simplifying the management of complex multi-layer structures.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This approach allows for the creation of superconducting coils with a desired shape, enhancing the stability and uniformity of the magnetic field, which is crucial for high-quality MRI imaging.
Implementation Method 1
by using a superconducting coil as a static electromagnetic field generation source of an MRI apparatus, a temporally stable static electromagnetic field with high strength and high uniformity can be obtained
Data Source
AI summary
In a superconducting coil used in an MRI apparatus, it is necessary to arrange a superconducting wire at a desired position to obtain a desired coil shape in order to obtain a temporally stable static electromagnetic field with high strength and high uniformity. A superconducting coil includes a winding frame, a spacer disposed on an outer periphery of winding frame and including a winding groove having a spiral shape and a communication groove provided between winding grooves, and includes a coil group having a superconducting wire wound in winding groove. It is therefore possible to obtain superconducting coil having a desired coil shape.