Johnston coupling with additional vacuum enclosure

US11788666B2 · kind B2 · utility

Assignee

• NEXANS · FR

Inventors

• Holger Schulz · Frankfurt, DE
• Christian Frohne · Hannover, DE

Key dates

• Filing date: Jan 14, 2021
• Grant date: Oct 17, 2023
• Expiry date: Aug 2, 2041

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02E60/32
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A plug-in coupling for connecting a first to a second double-walled, vacuum-insulated cryogenic line includes a coupling plug and a coupling socket. The coupling plug has an inner and an outer pipe piece and a first connecting flange and is connected to the first cryogenic line. The coupling socket has an inner and an outer pipe piece and a second connecting flange and is connected to the second cryogenic line. In an assembled state of the plug-in coupling, the coupling plug has been plugged into an open annular gap in the coupling socket. The annular gap is surrounded both at its inner circumference and at its outer circumference by an insulating vacuum, whereby the thermal insulation of the plug-in coupling is improved. This construction makes possible a shorter design of the plug-in coupling, which, while achieving good thermal insulation, is space-saving and easy to handle.