Prefabricated overhead composite thermal insulation pipe for conveying high-temperature heating medium and production process

• Main Authors: ZHANG XING, WANG BAOXIANG, CAO GUAN, CHENG SHIPEI
• Format: Patent
• Language: Chinese; English
• Published: 26.07.2022
• Subjects: BLASTING; COMBINED OPERATIONS; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; JOINTS OR FITTINGS FOR PIPES; LIGHTING; MACHINE TOOLS; MEANS FOR THERMAL INSULATION IN GENERAL; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; OTHER WORKING OF METAL; PERFORMING OPERATIONS; PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; THERMAL INSULATION IN GENERAL; TRANSPORTING; UNIVERSAL MACHINE TOOLS; WEAPONS

The invention discloses a prefabricated overhead composite thermal insulation pipe for conveying a high-temperature heating medium, which comprises a working steel pipe and an outer protective pipe, the working steel pipe is sleeved with a plurality of ceramic fiber pipes, the ceramic fiber pipes are sequentially connected together end to end through socket structures, and gaps between the ceramic fiber pipes and the outer protective pipe are filled with polyurethane thermal insulation layers. A supporting frame is arranged in the polyurethane heat preservation layer. The heat preservation thickness can be obviously reduced, the ceramic fiber pipe is installed through a socket and spigot joint type structure, and the high-temperature-resistant sealing ring is used, so that the ceramic fiber pipe is convenient to install and good in sealing effect; the ceramic fiber pipe heat preservation layer and the outer protection pipe are tightly bonded together through polyurethane to form a three-in-one structure, the