Superconducting Cable Terminal Temperature Movable Structure
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Solution Overview
Problem
Conventional superconducting cable terminals face challenges with insulation breakdown due to thermal contraction and expansion, leading to increased maintenance and repair costs, as the solid insulator and conductor bar must be replaced separately, and the wide heat transfer area causes deformation and insulation failure.
Innovation Solution
A temperature movable structure with improved assembling and insulating designs, featuring upper and lower spacer members, a pipe body, conductors, a contact connecting member, and a shield member, which allows for easy assembly and disassembly, reduces heat transfer, and minimizes deformation through a groove in the second conductor and a shield member with a narrowing caliber.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a solid insulator is used in the temperature movable portion, then insulation is provided, but the insulator cannot be removed or separated from the conductor bar when insulation breakdown occurs, increasing maintenance cost and complexity
Solution Approach 1:
The temperature movable portion is divided into separate modular components: the conductor bar, the solid insulator, and the contact connecting member. Each component can be independently removed and replaced, allowing the insulator to be separated from the conductor bar when insulation breakdown occurs, thereby reducing maintenance cost and complexity while maintaining insulation strength.
2Strength
If the conductor bar has a filled internal structure, then structural strength is improved, but the heat transfer area increases causing excessive heat transfer and deformation during thermal contraction and expansion
Solution Approach 1:
The conductor bar is designed with a hollow internal structure instead of being filled, which reduces the heat transfer area and minimizes excessive heat transfer during thermal contraction and expansion, thereby reducing deformation while maintaining sufficient structural strength through the hollow cylindrical design.
3Use of energy by moving object
If the conductor bar has a large heat transfer area, then thermal conductivity is improved, but thermal contraction and expansion cause deformation and insulation breakdown
Solution Approach 1:
The hollow structure of the conductor bar reduces the heat transfer area, controlling thermal conductivity to an optimal level that prevents excessive thermal contraction and expansion, thereby maintaining insulation reliability while still allowing necessary thermal management in the superconducting cable terminal.
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
The solution enhances assembling and insulation strength, reduces insulation breakdown incidents, and decreases maintenance and repair costs by allowing partial component replacement and minimizing conductor deformation due to thermal changes.
Implementation Method 1
the deformation of the conductor due to thermal contraction and expansion can be reduced
Implementation Method 2
the deformation of the conductor due to thermal contraction and expansion can be reduced
Implementation Method 3
its heat transfer area is wide. Therefore, the conductor bar is seriously deformed due to excessive heat transfer
Data Source
AI summary
Disclosed herein is a temperature movable structure of a superconducting cable terminal. The superconducting cable terminal has sections of a high temperature portion, a temperature movable portion and an extremely low temperature portion. The temperature movable structure is disposed in the section of the temperature movable portion between the sections of the high temperature portion and the extremely low temperature portion. The temperature movable structure has upper and lower spacer members, a pipe body, first and third conductors, a second conductor and a contact connecting member disposed between the first and second conductors.