Cabin pipeline using super thermal insulation material and preparation method thereof

Abstract

The invention discloses a cabin pipeline applying a super thermal insulation material and a preparation method thereof, and belongs to the field of marine oil and gas pipelines, the cabin pipeline comprises a conductive inner pipe, an anti-corrosion coating coated on the conductive inner pipe, a thermal insulation layer wound on the anti-corrosion coating and formed by the super thermal insulation material, and a resin sealing layer coated outside the thermal insulation layer. The cabin pipeline applying the super thermal insulation material is high in impact resistance, long in service life and excellent in mechanical property and thermal insulation property. The conductive inner pipe is adopted and has excellent corrosion resistance to liquefied natural gas in a pipeline, and compared with a conventional steel pipe, the mass of the conductive inner pipe is obviously reduced, so that the carrying and mounting cost is saved, and the efficiency is improved; the protective layer formed by the anti-corrosion coating and the resin sealing layer can prevent the conductive inner pipe from being directly exposed in the environment due to long-time seawater infiltration or accidental damage of the outer layer, electrochemical corrosion is avoided, and the corrosion resistance is further improved.

Description

technical field [0001] The invention relates to a pipeline and a preparation method thereof, in particular to a cabin pipeline using super-insulation materials and a preparation method thereof, belonging to the field of offshore oil and gas pipelines. Background technique [0002] There are three modes of transportation of LNG: shipping, trucking and pipeline transportation. Among these three modes of transportation, shipping is the main mode of transportation of LNG, that is, natural gas from oil wells is received through transportation pipelines, and after being processed and processed qualified , stored in the cabin for transportation, accounting for more than 80% of the world's LNG transportation volume. [0003] There will be a large amount of oil pollution, toxic products, dust and harmful substances produced by the corruption of certain organic substances in the cabins of LNG transportation. Besides, due to the long-term voyage at sea, the cabins will not only be corr...

AI Technical Summary

Problems solved by technology

[0005] The existing anti-corrosion technology of the natural gas steel pipe in the cabin is to add a coating on the steel pipe, and form an insulating material through the coating to prevent the electrolyte in the seawater from directly contacting the steel pipe, or to overcome the above problems by increasing the wall thickness of the steel pipe, but increasing the coating The coating will not fundamentally solve the above problems. As the coating ages and falls off, seawater will still contact the steel pipe, causing it to be corroded, and increasing the thickness of the steel pipe will increase its cost, which is not conducive to the handling and installation of the steel pipe.