Superconducting power supply system
AssigneeLs Electric Co., Ltd.
InventorsKi Nam Ryu, Min Jee Kim
Life of this patent
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Abstract
The present disclosure relates to a superconducting power supply system which may comprise: a superconducting cable connected between terminals; a recovery pipe forming a closed loop with the superconducting cable to recover a liquid coolant of the superconducting cable; a pump for providing a circulating pressure of the liquid coolant through the recovery pipe; a refrigerator for maintaining a temperature by cooling the liquid coolant; and a superconducting fault current limiter for maintaining the temperature of a superconducting element immersed in a supercooled liquid coolant by introducing the liquid coolant recovered through the recovery pipe.
Claims6
A superconducting power supply system, comprising:
- a recovery pipe forming a closed loop with a superconducting cable to recover liquid coolant from the superconducting cable, the superconducting cable being connected between terminals;
- a pump providing circulating pressure of the liquid coolant being circulated through the recovery pipe;
- a refrigerator that cools the liquid coolant to maintain its temperature;
- a superconducting fault current limiter;
- an inlet pipe configured to connect the superconducting fault current limiter with the recovery pipe at a first part of the superconducting fault current limiter, at least a portion of the liquid coolant being introduced to the superconducting fault current limiter through the inlet pipe;
- and
- an outlet pipe configured to connect the superconducting fault current limiter with the recovery pipe at a second part of the superconducting fault current limiter, the liquid coolant introduced to the superconducting fault current limiter being discharged to the recovery pipe,
- wherein the superconducting fault current limiter comprises:
- a first container containing a subcooled liquid coolant in which a superconducting element is immersed;
- and
- a second container configured to accommodate the introduced liquid coolant and surround the first container such that the introduced liquid coolant is in contact with the subcooled liquid coolant through an outer wall of the first container,
- wherein at least a portion of the liquid coolant is introduced to an outer wall of the first container and exchanges heat with the subcooled liquid coolant through the outer wall of the first container,
- wherein a liquid level of the liquid coolant in the second container is higher than that of the subcooled liquid coolant in the first container, and
- wherein a side area of the first container corresponding to a difference between the liquid level of the liquid coolant and a liquid level of the subcooled liquid coolant is a condensation surface that maintains an internal pressure of the first container by condensing the subcooled liquid coolant when it is vaporized.
Dependencies are inferred from the claim text.