Fire-proof breathable cap for liquefied gas ship

Abstract

The invention relates to a fireproof ventilation cap for a liquefied gas ship. The ventilation cap for the liquefied gas ship comprises a supporting base, a fireproof net base, fireproof net assemblies and a rain hat. A cavity is formed in the middle of the supporting base. The fireproof net base is installed at the upper end of the supporting base. The fireproof net assemblies are arranged on the fireproof net base. The rain hat is arranged outside the fireproof net assemblies in a covering manner and connected with the supporting base. Exhaust holes are formed in the upper end face of the fireproof net base and located under the fireproof net assemblies. A downward concave cavity is formed in the middle of the fireproof net base and located in the cavity of the supporting base. The side wall of the bottom of the concave cavity is connected with a drainage pipe. The tail end of the drainage pipe is located outside the supporting base, and the lower end of the supporting base is connected with an exhaust pipe. The fireproof ventilation cap is simple in structure, the drainage pipe is arranged at the bottom of the concave cavity of the fireproof net base so that rainwater entering from the rain hat can be drained, smoke is exhausted through a double-layer fireproof net on the back from the upper end face of the fireproof net base, and therefore the functions of exhausting at the upper portion and draining and rain proofing at the lower portion are achieved. All the components can be detached to be maintained, and the fireproof ventilation cap can be applied to small channel pipe diameters.

Description

technical field [0001] The invention relates to a vent cap, in particular to a fireproof vent cap for a liquefied gas ship. Background technique [0002] Vent caps are important supporting equipment to ensure the safety of gas stations and oil tank lights, and are also widely used in the pipelines of dual-fuel liquefied gas systems on ships. Existing venting caps applied to ships' dual-fuel liquefied gas systems have complex structures, large volumes, relatively single functions, and are not easy to disassemble. Contents of the invention [0003] In view of the above-mentioned defects, the object of the present invention is to provide a fire-proof breathable cap for liquefied gas ships, which is simple in structure, easy to install, capable of exhausting air and preventing rain and drainage, and is convenient for disassembly and installation, suitable for small-diameter pipelines. [0004] The technical scheme that the present invention adopts for this reason is: [0005...

AI Technical Summary

Problems solved by technology

Existing venting caps applied to ships’ dual-fuel liquefied gas systems have complex structures, large volumes, single functions, and are not easy to disassemble

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