Superconducting Joint Protective Case for Condensation and Stress Relief
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Solution Overview
Problem
The temperature rise of superconducting wires from low temperatures to room temperature during maintenance leads to dew condensation and deterioration of the joint portions, and excess portions are generated due to repeated heat treatments.
Innovation Solution
A protective case with a blind hole accommodating the superconducting joint and excess portions, reducing stress and preventing dew condensation by winding the excess portions around the outer surface and inserting them into shaped holes, made of materials like Hastelloy, with a sealing member to prevent moisture entry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the superconducting wire is heated repeatedly to form joint portions, then the joint portions are formed, but excess portions of the superconducting wire are generated and the joint portions deteriorate due to dew condensation
Solution Approach 1:
The joint portion and excess portions are extracted from the general superconducting wire structure and placed into a separate protective blind hole. This isolation prevents the joint portion from being exposed to the external environment where dew condensation occurs, thereby protecting it from deterioration while maintaining its formed state
Solution Approach 2:
The joint portion and excess portions are nested within the protective case body's blind hole. This nested structure allows the vulnerable joint portion to be contained within a protective enclosure, shielding it from harmful external factors like moisture and condensation
2Ease of operation
If excess portions of superconducting wire are left out, then they are accessible for processing, but they occupy space and may cause stress on the joint portion
Solution Approach 1:
The excess portions are nested within the blind hole of the protective case body, which provides a dedicated space for accommodating them. This containment reduces spatial occupation outside the critical joint area and minimizes stress on the joint portion while keeping the excess portions accessible through the blind hole opening
3Ease of operation
If the joint portion is exposed to the environment, then it can be inspected and accessed, but it deteriorates due to dew condensation when temperature rises
Solution Approach 1:
The joint portion is nested within the protective blind hole, which provides protection against dew condensation while maintaining a controlled environment. The blind hole structure allows for inspection access while preserving the durability of the joint portion by preventing harmful environmental exposure
Solution Approach 2:
The protective case body creates a protected environment for the joint portion, effectively isolating it from the external atmosphere that causes dew condensation. This inert-like protective environment maintains the joint portion's reliability by preventing moisture-related deterioration
Data Source
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AI summary
This protective case for a superconducting connection part comprises a protective case body including an outer peripheral surface around which a first extra length portion of a superconducting wire material is wound. The outer peripheral surface of the protective case body is provided with: a blind hole for housing the superconducting connection part of the superconducting wire material; and a second extra length portion of the superconducting wire material which is connected to the first extra length portion and the superconducting connection part.