LNG single-fuel ship

Abstract

The invention provides an LNG single-fuel ship and belongs to the technical field of ship engineering. According to the structure of the LNG single-fuel ship, a hole is formed in a main deck of a storage tank cabin, the storage tank cabin is designed to be of a sunken structure, one part of a gas storage tank is located above the main deck, the other part of the gas storage tank is located below the main deck, a double-wall pipe in an engine room is adopted as a fuel gas delivery pipe, a rectangular ventilation guide pipe is arranged on the periphery of the tail segment, close to an engine, of the fuel gas delivery pipe, and a round ventilation guide pipe is arranged on the periphery of the segment, on the upstream of the rectangular ventilation guide pipe, of the fuel gas delivery pipe; a liquid outlet pipe on the downstream of a flowmeter is divided into a main path and an auxiliary path, wherein the main path is finally connected to a mixer, and the auxiliary path is connected to the portion, between a second-stage pressure reducing valve and a downstream manual drainage pipe, of the main path through a fault opening type electromagnetic pneumatic valve and an auxiliary path safety valve; the mixer is connected with a supercharger, and the supercharger is connected with the fuel gas delivery pipe. Due to the design, the strength and the stability of the LNG single-fuel ship are improved; fuel adding, fuel feeding and safety protection are achieved, and the safety of a ship power system is guaranteed.

Description

technical field [0001] The invention relates to the technical field of ship engineering, in particular to an LNG single-fuel ship. Background technique [0002] LNG (Liquefied Natural Gas), the English abbreviation for liquefied natural gas. Natural gas is a combustible gas that is naturally extracted from gas fields, and its main component is methane. LNG is condensed into a liquid by cooling gaseous natural gas at normal pressure to -162°C. Natural gas liquefaction can greatly save storage and transportation space, and has the characteristics of large calorific value and high performance. LNG is a clean and efficient energy source. [0003] At present, some countries in Europe and the United States have begun to use LNG as fuel for maritime ships, small transport ships, ferries, ro-ro ships, and coast guard ships. China has no dedicated single-fuel LNG ships. Contents of the invention [0004] The technical task of the present invention is to solve the deficiencies o...

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Problems solved by technology

[0003] At present, some countries in Europe and the United States have begun to use LNG as fuel for maritime ships, small transport ships, ferries, ro-ro ships, and coast guard ships. China has no dedicated single-fuel LNG ships.

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