Saddle Superconducting Coil Support for Compact Magnet Cryostats
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Solution Overview
Problem
Existing superconducting magnet devices for single crystal pulling devices face challenges with increased manufacturing costs due to the need for more superconducting wire materials and weight/size increases caused by inefficient support structures for saddle superconducting coils, which are separated from the magnetic field application location and subjected to electromagnetic forces.
Innovation Solution
A superconducting magnet device with a cryostat design that includes a support frame for saddle superconducting coils positioned radially outward, supported by a ring-shaped frame and additional load support bodies, along with cryocoolers to maintain a vacuum and cooling, reducing the distance from the magnetic field source and minimizing electromagnetic forces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of moving object
If the saddle superconducting coil is supported by a conventional support structure, then the coil can be maintained in position, but the distance from the magnetic field application location increases and the weight/size of the device increases
Solution Approach 1:
The support frame is merged with the cryostat structure, where the cryostat's outer peripheral wall serves as part of the support structure. This integration eliminates the need for separate, complex support structures while maintaining the coil's positional stability and minimizing the distance to the magnetic field application location.
Solution Approach 2:
Instead of supporting the coil from the inside (radially inward), the support frame is positioned radially outward from the saddle superconducting coil. This inverted support approach allows the coil to be held in position closer to the magnetic field application location without requiring complex internal support structures.
2Power
If more superconducting wire materials are used to compensate for increased distance, then the magnetic field generation capability is maintained, but the manufacturing cost increases
Solution Approach 1:
The support frame provides localized structural support at critical positions around the saddle superconducting coil, allowing the coil to be positioned optimally close to the magnetic field application location. This localized support enables the use of less superconducting wire material while maintaining magnetic field generation capability, thereby reducing manufacturing costs.
3Ease of manufacture
If the support structure is simplified, then manufacturing cost is reduced, but the ability to manage electromagnetic forces may be compromised
Solution Approach 1:
The support frame serves multiple functions simultaneously: it provides structural support for the saddle superconducting coil, manages electromagnetic forces through its radially outward positioning, and maintains the vacuum environment within the cryostat. This multi-functionality allows for a simplified structure that does not compromise electromagnetic force management while reducing manufacturing cost.
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 design enhances magnetic field generation efficiency, reduces the amount of superconducting wire material needed, and lowers manufacturing costs while effectively managing electromagnetic forces, resulting in a more compact and cost-effective device.
Implementation Method 1
a cryostat that includes an inner peripheral wall disposed in a radially outward direction of a bore to surround the bore and an outer peripheral wall disposed in the radially outward direction of the inner peripheral wall to surround the inner peripheral wall, and that provides a vacuum environment in an internal space defined between the inner peripheral wall and the outer peripheral wall
Implementation Method 2
a pair of saddle superconducting coils disposed to face each other with the bore interposed between the pair of saddle superconducting coils, and each being exposed to the vacuum environment, in the internal space
Implementation Method 3
a pair of saddle superconducting coils
Implementation Method 4
subjected to electromagnetic forces
Data Source
AI summary
A superconducting magnet device includes: a cryostat that includes an inner peripheral wall disposed in a radially outward direction of a bore to surround the bore and an outer peripheral wall disposed in the radially outward direction of the inner peripheral wall to surround the inner peripheral wall, and that provides a vacuum environment in an internal space defined between the inner peripheral wall and the outer peripheral wall; a pair of saddle superconducting coils disposed to face each other with the bore interposed between the pair of saddle superconducting coils, and each being exposed to the vacuum environment, in the internal space; and a support frame that is disposed in the radially outward direction of the pair of saddle superconducting coils in the internal space, and that supports the pair of saddle superconducting coils.