Corrugated plate and liquefied gas storage vessel having same

Abstract

A corrugated plate and a liquefied gas storage vessel having a corrugated plate. The corrugated plate comprises a plate body (1), first corrugations (12), second corrugations (13) orthogonal to the first corrugations, and intersection structures (14) formed at the intersections. The first corrugations (12) are higher than the second corrugations (13). Each intersection structure (14) comprises a top (141), ridges (142) and recesses (143), wherein the top (141) is located in the center of the intersection, and the protrusion height of the top (141) is greater than that of the first corrugation (12); one ridge (142) is formed in each of four quadrants formed by means of the orthogonality of the corrugations, and extends from the top (141) towards the plate body (1), and the overall extension direction of each ridge (142) intersects the first corrugation (12), the second corrugation (13) and the direction of height (D1); and four recesses (143) are provided, and each recess (143) is located in one quadrant, is formed on an outer side surface of the first corrugation (12), is located between the first peak (121) of the first corrugation (12) and the ridge (142), and is recessed inwards relative to the outer side surface of the first corrugation (12). The intersection structures (14) enable the upper and lower surfaces of the intersections to have uniform line lengths, such that uniform thicknesses are achieved, and excessive thinning is prevented, thereby achieving a better structural strength and fatigue resistance.

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