Method for cooling an assembly for superconductive cables

摘要

The method involves arranging tubular cryostat (3) between two thermally insulated ends (1,2). A superconducting cable is arranged with which supply of coolant is available, and the liquid nitrogen is pumped to the end (2) by a pump (9) through end (1). The coolant supply is used in vacuum-insulated tank (7), in which the nitrogen is located at operating temperature and is pumped out. The system for operating amount of liquid nitrogen is provided for switching the liquid nitrogen added in vacuum-insulated tank during operation to the secondary tank (10) containing liquid nitrogen.