Method for cooling a plant for superconductive cables

US10151521B2 · kind B2 · utility

Assignee

• NEXANS · FR

Inventors

• Klaus Schippl · Hannover, DE
• Mark Stemmle · Hannover, DE
• Frank Schmidt · Zorneding, DE

Key dates

• Filing date: Dec 4, 2012
• Grant date: Dec 11, 2018
• Expiry date: Jun 28, 2033

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E40/60
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A method for cooling a plant for superconductive cables is provided, where the plant includes two thermally insulated end closures (1, 2) and at least one thermally insulated, tubular cryostat (3) arranged between the end closures, in which at least one superconductive cable is arranged. Liquid nitrogen contained in a cooling agent supply is pumped by means of a pump (9) through a first end closure and the cryostat to a second end closure. At least one vacuum insulated tank (7) is used for the cooling agent supply, where the tank (7) contains nitrogen at operating temperature and out of which the nitrogen is pumped. For making available a quantity of liquid nitrogen necessary for operating the plant, the supply of liquid nitrogen contained in the tank (7) is supplemented during operation or is switched over to another tank (10) containing liquid nitrogen.