Liquefied natural gas bin rectangular steel plate and connecting piece device thereof

Abstract

The invention discloses a liquefied natural gas bin rectangular steel plate and a connecting piece device thereof. The liquefied natural gas bin rectangular steel plate comprises a liquefied natural gas bin, a main barrier layer and a secondary barrier layer are arranged in the liquefied natural gas bin, and the secondary barrier layer is arranged on the outer side of the main barrier layer and iscomposed of a plurality of rectangular connecting plates; each rectangular connecting plate comprises a bottom plate, longitudinal side plates and transverse side plates, the longitudinal side platesare symmetrically arranged on the left side and the right side of the surface of the bottom plate, the transverse side plates are symmetrically arranged on the front side and the rear side of the bottom plate, every two adjacent rectangular connecting plates are connected in a welded mode, and corners are connected between the adjacent transverse side plates and longitudinal side plates; and after the four rectangular connecting plates are welded, four corners of the middle part are connected to form a connecting groove, and the connecting groove is in a cross star shape. The connecting structure is composed of the multiple rectangular connecting plates, the oblique side plates are arranged between the adjacent rectangular connecting plates, convex corners are formed after connection, thestructural strength and the anti-pressure capacity of the rectangular connecting plates are improved, the rectangular connecting plates have the buffering effect, vibration can be reduced, and the service life is prolonged.

Description

technical field [0001] The invention relates to the technical field of ships and land, in particular to a rectangular steel plate for a liquefied natural gas tank and a connector device thereof. Background technique [0002] Liquefied natural gas carrier, referred to as "LNG carrier". Refers to a "ship" dedicated to the transportation of liquefied liquefied natural gas. The earliest LNG carrier was the 5,100-square-meter "Methane Guangduo" rebuilt from an ordinary old oil tanker in the United States in 1958. According to the structure of the liquid cargo tank, it can be divided into independent storage tank type and membrane type. The former is to place cylindrical, tank-shaped, spherical and other storage tanks in the ship; the latter adopts a double-hull structure, and the inner shell is the load-bearing shell of the liquid cargo tank. Compared with the independent type, the membrane type has the advantage of high volume utilization , the structure is light in weight, s...

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Problems solved by technology

[0003] At present, the existing secondary barrier layer of LNG storage has the following problems: the secondary barrier layer of LNG storage is welded and formed by steel plate, which causes shaking during the ship’s navigation, and the secondary barrier layer has poor compressive performance and does not have a buffering effect, so it is easy to be damaged. crush damage

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