METHOD AND SYSTEM FOR SUPPLYING AT LEAST ONE WORKING UNIT IN SUB-COOLING CRYOGENIC LIQUID

摘要

A method of supplying cryogenic liquid subcooled from at least one station (P, P1, P2 ...) performing machining operations, from a storage tank (10), which reservoir contains, under a storage pressure greater than atmospheric pressure, the cryogenic fluid in the liquid phase at the bottom of the tank and in the gaseous phase at the top of the tank, said tank being adapted to supply said station (P) with liquid drawn from the bottom of the tank (10), as well as to be supplied from the outside with fluid, characterized in that: - one has at least one heat exchanger, immersed in at least one bath of said cryogenic liquid (20), - one carries out the controlling (3, 4) the level of the or each bath at a determined level; - It is passed through the or each heat exchanger cryogenic liquid from the storage tank (10) before its arrival at (s) post (s) machining; - The pressure of the cryogenic liquid from the or each immersed exchanger is adjusted (1, 6, 1 2, 13, 61, 62 ...) before it arrives at the corresponding machining station.