Novel marine LNG fuel self-pressurization gas supply system and control method thereof

Abstract

According to the technical scheme, the invention provides a novel marine LNG fuel self-pressurization gas supply system. According to the other technical scheme, the invention provides a control method of the novel marine LNG fuel self-pressurization gas supply system. According to the novel marine LNG fuel self-pressurization gas supply system and the control method thereof, the LNG fuel supply system is optimized by adopting two core key technologies, specifically, 1, a novel low-resistance and high-efficiency self-pressurizer and a self-pressurization system are adopted, and LNG fuel supply system is optimized by reducing the resistance of self-pressurization system and improving the pressurization effect of self-pressurization system from the perspective of improving the internal structural form of the self-pressurizer and increasing the through-flow area of a valve of the self-pressurization system; and 2, from the perspective of improving the system design and the control method thereof, the precision control of the gas supply pressure is realized, the safety protection cut-off is realized, and the practical problem of natural gas emission escape is solved.

Description

technical field [0001] The invention relates to a new type of gas supply system for LNG fuel in ships and its control method. The gas supply system adopts the principle of self-pressurization of LNG liquid tanks to increase the pressure of the liquid tanks, and then converts LNG fuel gasification heating into ship engines or other similar fuel tanks. Gas fuel for gas-consuming equipment. Background technique [0002] With the increasingly stringent environmental protection requirements for ships, the use of clean energy liquefied natural gas (LNG) to replace traditional fuel oil has become one of the main directions of ship fuel. LNG is stored in liquid form on board, but it is very volatile and produces vapor after being heated on board, forming a flammable and explosive dangerous environment. In order to avoid the diffusion of volatile gases of such alternative fuels, the International Maritime Organization allows the storage of such low flash point fuels in Type C fuel t...

AI Technical Summary

Problems solved by technology

[0042] The technical problem to be solved by the present invention is: the existing technical scheme does not solve the practical problems of unsatisfactory self-supercharger effect, inaccurate pressure regulation, and escape of natural gas discharge from the principle and root cause

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