Thermal insulation pipe and thermal insulation pipe group

• Main Authors: LI XIAOXU, FAN XIAOXIAN, JIA WUJIANG, LI QINGQING, WANG KAI, HE YALI, DU RENZHI, GAI SHASHA, ZHANG DUANGUANG, ZHANG HONGYAN, GONG SHUZHAN, GAO FEI, SHEN JUNFANG, LI QIAN
• Format: Patent
• Language: Chinese; English
• Published: 02.06.2023
• 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 provides a heat preservation pipe and a heat preservation pipe set, and relates to the technical field of geothermal well pipelines, the heat preservation pipe provided by the utility model comprises an outer pipe, a heat preservation layer and an inner pipe assembly, one end of the outer pipe is a necking thickened end, the necking thickened end is provided with external threads, the other end of the outer pipe is a thickened end, and the inner pipe assembly is provided with external threads. The thickened end is provided with an internal thread matched with the external thread; the inner pipe assembly is located in the outer pipe, one end of the inner pipe assembly is welded to the inner wall of the necking thickened end, the other end of the inner pipe assembly is welded to the inner wall of the thickened end, and a heat preservation cavity for containing the heat preservation layer is formed between the inner pipe assembly and the outer pipe. The thermal insulation pipe provided by the u