Superconducting Ring Spindle Bearing for Frictionless High-Speed Twisting
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Solution Overview
Problem
Ring spinning technology is limited by mechanical friction and heat generation at high speeds, leading to reduced productivity and safety concerns due to the weight and imbalance of magnetic ring rotors in existing superconducting magnetic bearing systems.
Innovation Solution
A superconducting magnetic bearing system with a permanent magnetic ring rotor levitating over a cooled stator, featuring multiple high-temperature superconducting stators arranged in parallel for efficient cooling and stabilization, and using ferromagnetic flux collectors to enhance magnetic field strength, along with a thermally insulated tube-in-tube configuration for reduced material costs and simplified assembly.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional ring spinning methods are used, then mechanical friction and heat generation occur at high speeds, but productivity is reduced and yarn quality deteriorates
Solution Approach 1:
The patent replaces the conventional mechanical contact-based ring spinning system with a superconducting magnetic bearing system. The rotor is levitated magnetically above the stator, eliminating mechanical friction between moving parts. This substitution of mechanical contact with magnetic field interaction allows high-speed operation without the friction and heat generation that limit conventional systems.
Solution Approach 2:
The patent changes the physical state of the stator material to a superconducting state by cooling it below its critical temperature. This parameter change (temperature) transforms the stator's magnetic properties, enabling it to generate strong magnetic fields with minimal energy loss and support the levitation of the rotor, thereby eliminating mechanical friction.
2Object-generated harmful factors
If a permanent magnetic ring rotor is used in superconducting magnetic bearing systems, then frictionless operation is achieved, but weight and imbalance cause safety concerns
Solution Approach 1:
The patent divides the rotor into multiple permanent magnetic segments arranged around the circumference. This segmentation reduces the weight of each individual segment and allows for better balance distribution. The segmented structure also facilitates easier assembly and adjustment to minimize imbalance, addressing the safety concerns while maintaining frictionless operation.
3Reliability
If multiple high-temperature superconducting stators are arranged in parallel, then cooling efficiency and stabilization are improved, but device complexity increases
Solution Approach 1:
The patent combines multiple stators into a single integrated stator assembly with shared cooling infrastructure. By merging the cooling systems and support structures of individual stators into a unified design, the patent achieves the stabilization benefits of multiple stators while reducing the overall complexity of the system. This integrated approach maintains reliability through distributed magnetic support while simplifying maintenance and operation.
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 solution enables virtually frictionless high-speed operation, reduces material costs, and simplifies assembly and maintenance, achieving higher productivity and safety by minimizing rotational friction and centrifugal forces, while allowing for modular design and collective cooling with liquid nitrogen.
Implementation Method 1
When the superconducting material of the stator is cooled to below the transition temperature, the magnetic flux of the rotor is coupled into the cooled stator and magnetically trapped
Implementation Method 2
the friction between the ring and rotor is eliminated by magnetic levitation
Implementation Method 3
the magnetic flux of the rotor is coupled into the cooled stator and magnetically trapped
Implementation Method 4
The stators are formed of a thermally insulated tube-in-tube configuration
Implementation Method 5
the magnetic field-generating rotors are provided with ferromagnetic magnetic flux collectors which serve to increase the field strength
Data Source
AI summary
A device and a method for winding and twisting fibrous material in ring spinning and ring twisting frames are disclosed. The device and method allow the operating speed of the frames to be substantially increased, achieve higher productivity during ring spinning, and reduce the outlay, in terms of time and material, for assembling and servicing the device. This is achieved in that at least two high-temperature superconducting stators, together with the thermally connected cooling devices thereof, are arranged in a contactless manner and in parallel with one another along the progression of the spindle row, and the magnetic field-generating rotors, oriented coaxially with respect to the spindle, are introduced in a magnetically levitating manner in the magnetic field of the continuous intermediate space, between the stators which are adjacent in each case.