A three-way limiting device for the liquid cargo tank of an independent liquefied gas carrier

Abstract

The invention provides a three-way limiting device of an independent liquefied gas ship liquid cargo tank and belongs to the technical field of ship liquid cargo tank limiting. The three-way limiting device of the independent liquefied gas ship liquid cargo tank comprises an integrated supporting assembly, a horizontal supporting plate, a horizontal laminated wood assembly, first toggle plates, a supporting assembly and vertical laminated wood assemblies, wherein the integrated supporting assembly, the horizontal supporting plate and the horizontal laminated wood assembly are arranged on one side of a main ship body; and the first toggle plates, the supporting assembly and the vertical laminated wood assemblies are located on one side of the liquid cargo tank. The integrated supporting assembly is arranged perpendicular to the plane of the main ship body, the horizontal supporting plate is arranged on the supporting assembly, the side, away from the integrated supporting assembly, of the horizontal supporting plate is provided with the horizontal laminated wood assembly, and limitation of the main ship body in the vertical direction is achieved; the side, away from the horizontal supporting plate, of the horizontal laminated wood assembly is provided with the supporting assembly, the vertical laminated wood assemblies are arranged between the four sides of the supporting assembly and the integrated supporting assembly, the effect that the supporting assembly is limited in the transverse direction and in the longitudinal direction is guaranteed, and limitation of the liquid cargo tank in the other two directions is achieved; and a three-degree-of-freedom limiting device is arranged, limitation is achieved in a limited space, and the space utilization rate is high.

Description

Technical field [0001] The invention relates to the technical field of ship liquid cargo tank limit, in particular to a three-way limit device for the cargo tank of an independent liquefied gas ship. Background technique [0002] As independent liquefied gas ships and ships with independent cargo tanks are more and more widely used, the importance of their safety is getting higher and higher. As the main structure of the connection between the cargo tank and the main hull, the stop device has become the main Research object. [0003] The vertical support in the limit device generally provides vertical support for the cargo tank. The anti-roll / pitch device can limit the lateral / longitudinal displacement of the cargo tank. When the limit device is designed, it is necessary to consider the limit ability Bearing load, structural arrangement and fatigue performance; and because there are many limit devices between the cargo tank and the main hull, the liquid tank needs to ensure high h...

AI Technical Summary

Problems solved by technology

[0003] The vertical support in the limit device generally provides vertical support for the liquid cargo tank, and the anti-roll / pitch device can limit the lateral / longitudinal displacement of the liquid cargo tank, and when designing the limit device, it is necessary to consider the capacity of the limit The load, structure layout and fatigue performance; and because there are many limit devices between the liquid cargo tank and the main hull, it is necessary to ensure high hoisting accuracy during the hoisting process of the liquid tank, so the structural design of the limit device The hoisting requirements need to be considered; and although the currently used limiting device can play a better role on large and medium-sized liquefied gas ships, this limiting device with only a single degree of freedom limiting function is not suitable for small independent cargo tanks with a small bottom area. For liquefied gas ships and LNG fuel tanks, or the narrow front and rear parts, the single-degree-of-freedom limit device currently used is difficult to meet the demand and plays the basic role of limit

[0004] To sum up, the current limit device has a single limit degree of freedom, it is difficult to play the role of multi-degree of freedom limit in a limited space, and it causes the problem of waste of double bottom area

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