The double-wall pipe comprises an inner pipe made of low-temperature stainless steel and an outer pipe made of high-strength alloy steel, a composite heat insulation filling layer is arranged between the inner pipe and the outer pipe, the heat insulation filling layer is composed of a plurality of layers of reflective heat insulation films and granular aerogel filling materials, and the reflective heat insulation films are arranged between the inner pipe and the outer pipe. Efficient heat insulation is achieved through layer-by-layer stacking and uniform filling, and the surface of the outer pipe is coated with an anti-corrosion coating, a self-cleaning coating and an anti-icing coating. The manufacturing process comprises the steps of inner pipe machining, heat insulation layer wrapping and filling, outer pipe mounting, multifunctional coating treatment and the like. The double-wall pipe has excellent heat insulation performance, excellent structural strength and safety, is suitable for safe transportation of LNG, can stably run in a complex marine environment for a long time, and is reasonable in manufacturing process step, accurate in size and efficient in manufacturing.

    本发明涉及一种用于双燃料LNG船的双壁管及其制作工艺,该双壁管包括由低温不锈钢制成的内管和由高强度合金钢制成的外管,内外管之间设有复合隔热填充层,该隔热填充层由多层反射隔热膜和颗粒状气凝胶填充材料组成,通过逐层叠加和均匀填充实现高效隔热,外管表面涂覆有防腐涂层、自洁涂层和防冰涂层;制作工艺包括内管加工、隔热层包覆与填充、外管安装及多功能涂层处理等步骤。本发明的双壁管具有优异的隔热性能、卓越的结构强度和安全性,适用于LNG的安全运输,能够在复杂海洋环境中长期稳定运行,制作工艺步骤合理、尺寸精确、制作高效。


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    Title :

    Double-wall pipe of dual-fuel LNG (Liquefied Natural Gas) ship and manufacturing process of double-wall pipe


    Additional title:

    一种双燃料LNG船的双壁管及其制作工艺


    Contributors:
    FAN CHONGBO (author)

    Publication date :

    2025-01-03


    Type of media :

    Patent


    Type of material :

    Electronic Resource


    Language :

    Chinese


    Classification :

    IPC:    B63B Schiffe oder sonstige Wasserfahrzeuge , SHIPS OR OTHER WATERBORNE VESSELS / B05D PROCESSES FOR APPLYING LIQUIDS OR OTHER FLUENT MATERIALS TO SURFACES, IN GENERAL , Verfahren zum Aufbringen von Flüssigkeiten oder von anderen fließfähigen Stoffen auf Oberflächen allgemein / B23P Sonstige Metallbearbeitung , OTHER WORKING OF METAL / B29D PRODUCING PARTICULAR ARTICLES FROM PLASTICS OR FROM SUBSTANCES IN A PLASTIC STATE , Herstellen besonderer Gegenstände aus Kunststoff oder aus Stoffen in plastischem Zustand / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / G01D MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE , Anzeigen oder Aufzeichnen in Verbindung mit Messen allgemein



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