Vertical low-temperature liquefied natural gas storage tank

Abstract

The invention provides a vertical low-temperature liquefied natural gas storage tank. The tank comprises an internal tank body and an external tank body which are sleeved together; a gap is formed between the internal tank and the external tank; the outside of the internal tank body is coated by a flexible aluminum foil heat preservation quilt; circular sectional material reinforcing ribs are uniformly welded at the external circumference of the external tank body; the axis of a low-temperature liquefied natural gas tank is vertical to the horizontal plane; and supporting legs are uniformly distributed at the lower end surface of the low-temperature liquefied natural gas tank. According to the invention, the reinforcing ribs on the external tank body are the circular sectional materials uniformly distributed and welded at the external circumference of the external tank body, the work of welding the circular sectional material reinforcing ribs at the external circumference of the external tank body is convenient; after welding, the welding burrs in the internal circumference of the external tank body can be conveniently removed; after the circular sectional material reinforcing ribs are welded at the external circumference of the external tank body, no welding junction is formed in the gap between the internal tank body and the external tank body; the vacuum degree of the gap between the internal tank body and the external tank body is not affected; and the circular sectional material reinforcing ribs are uniformly distributed and welded at the external circumference of the external tank body, so that the volume of the internal tank body can be increased.

Description

technical field [0001] The invention relates to a vertical low-temperature liquefied natural gas storage tank, in particular to a reinforcement rib for an outer tank body of a vertical low-temperature liquefied natural gas storage tank. Background technique [0002] Natural gas is a kind of energy with good comprehensive performance. The volume of natural gas of the same mass is 600 times the volume of liquefied natural gas. In order to facilitate transportation and storage, natural gas should be made into cryogenic liquefied natural gas. Cryogenic liquefied natural gas (LNG) is a cryogenic liquefied natural gas produced from gaseous natural gas under a certain pressure using cryogenic technology. [0003] When storing cryogenic liquefied natural gas on the ground, vertical cryogenic liquefied natural gas storage tanks can be used. [0004] The vertical cryogenic liquefied natural gas storage tank has a cryogenic liquefied natural gas tank, and the cryogenic liquefied nat...

AI Technical Summary

Problems solved by technology

[0007] 1. The circular profile reinforcing rib is evenly distributed and welded on the inner circumference of the outer tank body, the circular profile reinforcing rib is in the gap between the inner tank body and the outer tank body, and the circular profile reinforcing rib occupies the inner tank body The space between the tank and the outer tank affects the increase in the volume of the inner tank;

[0008] 2. It is inconvenient to weld the circular profile reinforcement rib on the inner circumference of the outer tank body because of the narrow space, and it is also inconvenient to remove the welding burr on the inner circumference of the outer tank body after welding;

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