Internal sliding precast steam direct-buried composite insulation pipe

• Main Author: CHUNQING YU
• Format: Patent
• Language: English
• Published: 11.07.2001
• Edition: 7
• 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 relates to an internal sliding precast steam direct-buried composite thermal insulation pipe, which is used for conveying over-heat water and steam medium. The utility model is characterized in that the composite thermal insulation pipe is respectively provided with a work steel pipe layer 1, a drag reduction layer 2, a thermal insulation layer 3, a reflection layer 4, a thermal insulation layer 4 and a protective layer 6 from the inner part to the outer part, and a drag reduction jacket layer which is provided with reinforcing ribs and has the advantages of high-temperature resistance, friction resistance and high-low temperature wet lubrication is arranged between the work steel pipe layer and the thermal insulation layer. Meanwhile, the thermal insulation layer is inorganic heat-insulating material with strong hardness and high-temperature resistance, such as silicate heat-insulating material. The utility model can effectively support the work steel pipe and medium and has the advantages of good thermal insulation effect, little heat loss, high strength, stable structure, directly buried installation and low cost, etc., and is capable of beautifying environment, energy saving, environmental protection, etc.