Conduction Cooling Superconducting Magnet with Heat Dissipation Pipe
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Solution Overview
Problem
Conduction cooling superconducting magnet devices face challenges in reducing initial cooling time due to heat conduction from the vacuum chamber to the radiation shield, which hinders efficient cooling of the superconducting coil.
Innovation Solution
A conduction cooling superconducting magnet device design that includes a vacuum chamber, a superconducting coil, a radiation shield, a refrigerator, and a cooling pipe, where the provided members such as load support and leads conduct heat from the vacuum chamber to the radiation shield, and a cooling pipe with opposite end portions and an intermediate portion in contact with the superconducting coil and radiation shield, dissipating heat into a flowing coolant to reduce heat conducted to the radiation shield.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of time
If a cooling pipe is in contact with the superconducting coil and radiation shield for conduction cooling, then the initial cooling time is reduced, but heat is conducted from the vacuum chamber to the radiation shield through provided members, hindering efficient cooling
Solution Approach 1:
The cooling system is segmented into multiple cooling pipes with different functions: one cooling pipe contacts the superconducting coil for direct cooling, while another cooling pipe contacts the radiation shield for heat dissipation. This segmentation allows independent optimization of cooling paths, enabling efficient heat removal from both components without the heat conduction problem affecting the entire system.
Solution Approach 2:
The second cooling pipe acts as an intermediary thermal path between the radiation shield and the coolant. By introducing this intermediate cooling mechanism, heat that would otherwise conduct through provided members to the vacuum chamber is instead diverted to the coolant flowing in the second cooling pipe, effectively mediating the heat transfer process and preventing the harmful heat conduction.
2Ease of manufacture
If provided members penetrate or contact both vacuum chamber and radiation shield for structural support, then the device structure is established, but external heat is conducted to the radiation shield, preventing effective cooling
Solution Approach 1:
The heat conduction function is extracted from the structural provided members and assigned to dedicated cooling pipes. The provided members retain only their structural support function, while the cooling pipes handle thermal management. This separation allows provided members to maintain structural integrity without being thermal pathways, as the cooling pipes independently manage heat dissipation from the radiation shield.
Solution Approach 2:
The cooling pipes serve multiple functions: they provide thermal contact for heat dissipation, act as thermal barriers to prevent heat conduction through provided members, and enable active cooling of the radiation shield. This multi-functionality allows the system to maintain structural provided members while simultaneously preventing their harmful heat conduction effect.
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 significantly reduces the initial cooling time of the superconducting magnet device by effectively absorbing and dissipating heat through the coolant flowing through the cooling pipe, enhancing the cooling efficiency of both the superconducting coil and the radiation shield.
Implementation Method 1
The refrigerator cools the superconducting coil and the radiation shield by conduction
Implementation Method 2
Such provided member conducts external heat from the vacuum chamber to the radiation shield
Implementation Method 3
the cooling pipe has opposite end portions drawn out of the vacuum chamber and an intermediate portion in contact with the superconducting coil, the radiation shield, and the provided member. In the conduction cooling superconducting magnet device, the provided member dissipates heat into a coolant flowing through the cooling pipe
Data Source
AI summary
A superconducting coil is accommodated in a vacuum chamber. A radiation shield is arranged in the vacuum chamber with a prescribed space from the vacuum chamber to surround a periphery of the superconducting coil. A refrigerator cools the superconducting coil and the radiation shield by conduction. A provided member at least partly lies between the vacuum chamber and the radiation shield, through which heat is conducted from the vacuum chamber to the radiation shield. A cooling pipe has opposite end portions drawn out of the vacuum chamber and an intermediate portion in contact with the superconducting coil, the radiation shield, and the provided member. The provided member dissipates heat into a coolant flowing through the cooling pipe, to reduce the heat conducted to the radiation shield.