High-strength flame-retardant liquefied gas insulation tank and its installation method

Abstract

The invention relates to a high-strength flame-retardant liquefied gas insulation tank, which is characterized in that it includes a tank body (1), an external fixed arc-shaped foam board (2) of the tank body (1), and multiple arc-shaped foam boards (2) on the same circumference. The foam boards (2) form a support ring, and between two adjacent arc-shaped foam boards (2) on different circumferences, a lower foam layer (3), a lower glass mesh (4), an upper layer are arranged in sequence from bottom to top. The foam layer (5), the upper glass mesh (6), and the top of the curved foam board (2) are fixed with a polyurea coat (7), and the space between the polyurea coat (7) and the upper foam layer (5) is filled with foam. The liquefied gas insulation tank is not only convenient to manufacture, but also can be prefabricated in advance, saves materials, improves the production efficiency of the insulation layer, and meanwhile, the surface of the tank body is flat, smooth and beautiful.

Description

technical field [0001] The invention relates to a liquefied gas heat preservation tank, which is a liquefied gas heat preservation tank with high strength, good toughness and good sealing and heat preservation function. Background technique [0002] The LNG (Liquefied Natural Gas) ship is a special ship for transporting liquefied gas at minus 163 degrees Celsius. In this new generation of natural gas carrier, there are storage tanks for insulated liquefied natural gas, and the surface of the liquid pipe is sprayed with an insulating structure to It plays the role of storage sealing and heat preservation, and can prevent liquid leakage. [0003] However, in the past, when the insulation layer was made on the surface of the liquefied gas insulation tank on the ship, glass mesh was laid on the surface of the tank body on site, foam was sprayed, stainless steel wire mesh was laid, and polyurea was sprayed to complete the production. However, the liquefied gas insulation tank ma...

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Problems solved by technology

However, the liquefied gas insulation tank made in this way needs to waste a lot of materials, and the cost is high. At the same time, because it is constructed on the tank body, the operation is inconvenient and the production efficiency is not high. Moreover, the polyurea layer on the outermost surface is sprayed with polyurea on the stainless steel wire mesh. After forming, the molding of the outer surface depends on the molding of the internal PU foam (the foam layer needs to be polished to achieve a beautiful effect), so the polyurea layer is not smooth, and the surface is not smooth and beautiful

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