Insulation system for liquid cargo tanks of independent type b lng ships with splash screen structure

Abstract

The invention provides an independent B-type LNG ship liquid cargo tank heat insulation system with a splash-proof screen structure. The independent B-type LNG ship liquid cargo tank heat insulation system comprises a splash-proof screen, a bolt mechanism and a heat insulation plate, wherein the splash-proof screen is arranged on a main screen wall in a spaced manner through a supporting mechanism; the bolt mechanism is arranged on the main screen wall; and the heat insulation plate is fixed to the splash-proof screen through the bolt mechanism. The independent B-type LNG ship liquid cargo tank heat insulation system has the beneficial effects that all components are subject to modularization manufacturing and installation, unified standard specifications can be adopted when the components are prefabricated, and the working amount and the cost of manufacturing are reduced; heat insulation plate modules are relatively independent, when some module is damaged, the other modules cannot be influenced, and the reliability of heat insulation layers is improved; in addition, when the damaged module is repaired, only one damaged module needs to be dismounted for local repairing, and convenience is brought to maintenance and repairing; and the heat insulation system is suitable for an independent B-type LNG ship liquid cargo tank, can also be used for other shore-based low-temperature liquid cargo storage tanks or can serve as a heat insulation system of other low-temperature occasions.

Description

technical field [0001] The invention relates to the technical field of novel liquefied natural gas ship construction, in particular to an independent B-type LNG ship liquid cargo tank thermal insulation system with a splash screen structure suitable for the independent B-type LNG ship liquid cargo tank. Background technique [0002] Liquefied natural gas (LNG) refers to a colorless, transparent low-temperature liquid that cools natural gas whose main component is methane to about -163°C and compresses it to 1 / 600 of its gas volume. It is an important clean energy. The liquefied natural gas ship is the main means of transportation of liquefied natural gas at sea. It is a high-tech, high-difficulty and high-value-added ship, known as the "crown jewel" of the world's shipbuilding. [0003] For any type of LNG carrier, the thermal insulation system is at the heart of the cargo containment system. During the voyage of LNG ships, the temperature difference between the liquid car...

AI Technical Summary

Problems solved by technology

During the voyage of LNG ships, the temperature difference between the liquid cargo and the external environment is as high as nearly 200°C, so a large amount of heat will flow into the tank through the liquid cargo containment system, causing the liquid cargo to evaporate. On the one hand, it will cause cargo loss. Evaporation of the liquid cargo will cause the pressure in the cargo tank to rise, endangering the safety of the ship's navigation

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