B-type storage cabin heat insulation structure

Abstract

The invention provides a B-type storage cabin heat insulation structure. The B-type storage cabin heat insulation structure is provided with a B-type storage cabin, a tile type heat insulation layer is arranged at a plate seam or a stress concentration or crack generation and leakage high risk area on the outer surface of a main screen wall of the B-type storage cabin, a spraying type heat insulation layer is sprayed at the position, away from the plate seam, on the outer surface of the main screen wall of the B-type storage cabin, and the spraying type heat insulation layer sequentially comprises a crack arrest layer, a foam layer and an outer protection layer from inside to outside. The tile type heat insulation layer is sequentially provided with a flow guide device, a tile type heat insulation part and an outer protection layer from inside to outside, and baffles are arranged between the spraying type heat insulation layer and the tile type heat insulation layer. The spraying type heat insulation layer and the tile type heat insulation layer are combined, heat insulation and isolation protection can be purposefully carried out on a high-risk leakage area, general protection is adopted in a non-high-risk leakage area, and heat insulation protection is carried out on a main screen wall to the maximum extent under the condition that the cost is the lowest.

Description

technical field [0001] The invention relates to the field of low-temperature storage tanks in ships and ocean engineering, in particular to a heat insulation protection structure arranged on the outer surface of a main barrier wall of a B-type storage tank. Background technique [0002] The International Maritime Organization (IMO) clearly defines Type B independent The functions and definitions of storage tanks (hereinafter referred to as "Type B tanks"). Type B tanks are mostly used in large ships and marine engineering structures, and their functions include but are not limited to transport liquefied gas, used as liquefied gas fuel tanks, etc. The liquefied gas loaded includes but not limited to liquefied natural gas (LNG), liquid ammonia fuel (NH3), liquefied ethylene gas (LEG), etc. [0003] According to IMO IGF / IGC regulations, thermal insulation should be provided as required to prevent the temperature of the hull from falling below the allowable value and limit the...

AI Technical Summary

Problems solved by technology

For the traditional spraying construction method, the insulation materials commonly used at present are not fire-proof materials. If the insulation layer is prefabricated on the main screen wall, a large number of hot-fire operations will be required for welding when the sections are closed, which obviously does not meet the fire-proof requirements. Requirements: If the insulation is installed after being closed first, since the B-type cabin is generally installed inside the floating structure, it is limited by the installation space on site, and the insulation installation work of many parts will not be able to be carried out

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