Pipeline for the transport of refrigerated media

US6732765B2 · kind B2 · utility

Assignee

• NEXANS · FR

Inventors

• Klaus Schippl · Hannover, DE
• Stephan Lange · St. Leon-Rot, DE

Key dates

• Filing date: Mar 12, 2003
• Grant date: May 11, 2004
• Expiry date: Mar 12, 2023

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16L59/141
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

A pipeline for the transport of refrigerated media, including at least two metal pipes, positioned concentrically and at a distance to one another, an insulating layer made of layers of insulating material and reflecting material alternately positioned over one another being provided in the ring gap between the metal pipes and the ring gap being evacuated and a spacer in the form of a helix being wound onto the inner pipe. The spacer (3) is a metal wire (3a), onto which bodies (3b) made of a mechanically resistive insulating material, which are provided with a hole, are threaded at specific intervals. The layers (4b) made of insulating material are made of nonwoven glass or ceramic