Leakage guiding device of a B-type enclosure system of an LNG ship

Abstract

The invention discloses a leakage guiding device of a B-type enclosure system of an LNG ship, belongs to the technical field of ship construction. The device comprises a guide mechanism, flow-guidingtube, lap plate and support mechanism, the deflection mechanism comprises a plurality of deflection plates with deflection grooves, A plurality of deflector plates are connected to the upper surface of the insulating layer of the B-type enclosure system of the LNG ship to form an annular liquid collecting tank, the annular liquid collecting tank is communicated with the collecting device of the LNG ship through a diversion pipe, two adjacent delfection plates are connected through transition plates; A low surface of that flow guiding mechanism is connected with an upper surface of an insulation layer of a B-type enclosure system of an LNG ship, two sides of the flow guiding mechanism are connected with a splash screen through an overlapping plate, and the upper surface of the flow guidingmechanism is connected with a bottom plate of a liquid cargo tank of the LNG ship through a support mechanism, wherein the upper surface of the flow guiding mechanism is connected with the bottom plate of the liquid cargo tank of the LNG ship through a support mechanism. The diversion device can timely divert the leaked LNG out of the gap between the cargo tank and the splash screen, can effectively prevent the LNG from accumulating in large quantities, and can prevent the LNG from damaging the structure of the cargo tank and the splash screen.

Description

technical field [0001] The invention belongs to the technical field of shipbuilding, in particular to a leak diversion device for a B-type containment system of an LNG ship. Background technique [0002] The new B-type containment system of large LNG ships is characterized by an independent self-sustaining containment system. When the LNG ship is loading and sailing, due to the influence of waves and sea winds, the LNG in the B-type cargo hold will keep sloshing, thus impacting the B-type. At the same time, due to the ultra-low temperature of LNG at minus 163°C, the structural stress of the B-type cargo tank also changes greatly. It may cause cracks in the structure of the Type B cargo tank, resulting in leakage. If the ultra-low temperature LNG leaks to the steel plate of the hull structure, it will cause the steel plate to be brittle, seawater will enter the cargo hold, and even the serious consequences of the ship sinking, and the heat convection caused by the leakage wi...

AI Technical Summary

Problems solved by technology

May lead to cracks in the structure of the Type B cargo tank, resulting in a leak

If the ultra-low temperature LNG leaks to the steel plate of the hull structure, it will cause the steel plate to be brittle, seawater will enter the cargo hold, and even the ship will sink. The heat convection caused by the leakage will further increase the evaporation rate of the liquid cargo. Therefore, the leaked LNG liquid How to effectively recycle the goods into a special collection device is a big problem

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