Light-weight ultralow-temperature-resistant flexible composite pipe

• Main Authors: LI ZHAOYONG, ZHANG XIAOYU
• Format: Patent
• Language: Chinese; English
• Published: 06.11.2020
• Subjects: BLASTING; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; WEAPONS

The utility model belongs to the technical field of reinforced composite pipes, and particularly relates to a light-weight ultralow-temperature-resistant flexible composite pipe which is particularlysuitable for conveying ultralow-temperature media such as liquefied natural gas (LNG). An inner core layer, a filling layer, a reinforcing layer, a heat preservation layer, an isolation layer and an outer protection layer are sequentially arranged on the pipe wall from inside to outside. Wherein the inner core layer is a metal corrugated pipe, the filling layer is a polyurethane sealing strip wound in a wave trough of the outer wall of the corrugated pipe, the enhancement layer is formed by winding low-temperature-resistant metal or high-strength fibers, the heat preservation layer is made ofaerogel heat preservation materials, the heat preservation layer is wrapped and fixed by the isolation layer, and the outer protection layer is made of thermoplastic plastics. The flexible composite pipe has the advantages of