Fuel gas supplying system for supplying fuel gas to a liquified fuel gas propulsion ship with a high-pressure gas injection engine and a low-pressure gas injection engine

摘要

PURPOSE: A system for supplying fuel gas to a liquefied fuel gas propulsion ship with a high-pressure gas injection engine and a low-pressure gas injection engine is provided to simultaneously supply fuel from a fuel gas supply line to a high-pressure gas injection engine and a low-pressure gas injection engine. CONSTITUTION: A system for supplying fuel gas to a liquefied fuel gas propulsion ship with a high-pressure gas injection engine and a low-pressure gas injection engine comprises a liquefied fuel gas tank(10), a fuel gas supply line(L2), a high-pressure pump(50), a vaporizer(60), a branch pipe(71), and a decompression unit(70). The liquefied fuel gas tank stores liquefied fuel gas. The fuel gas supply line is connected from the liquefied fuel gas tank to a high-pressure injection engine. The high-pressure pump is installed in the fuel gas supply line and compresses liquefied fuel gas. The vaporizer is installed in the fuel gas supply line and vaporizes the compressed liquefied fuel gas. The branch pipe is branched from the fuel gas supply line and supplies the vaporized fuel gas to the low-pressure injection engine. The decompression unit is installed in the branch pipe and compresses the vaporized fuel gas.