| 摘要 |
A system for supplying fuel gas of ships according to the present invention supplies fuel gas to a main engine for propulsion of high-pressure gas injection type and to an accessory engine for power generation of low-pressure gas injection type from a storage tank. The system comprises a vent piping for transferring vent gas, obtained after discharging evaporation gas, to control internal pressure of the storage tank, a vent piping for transferring vent gas discharged to control pressures exceeded at each component devices of the system or at connections between component devices, and a low-pressure tank connected with the vent piping to suck the vent gas; and is characterized by transferring vent gas collected in the low-pressure tank to a high-pressure tank to be supplied as additional fuel gas for the accessory engine. The system for supplying fuel gas of ships further comprises a storage tank for storing liquefied fuel, a sucking drum for sucking the liquefied fuel from the storage tank, a vaporizer for transferring the liquefied fuel inside the sucking drum by a booster pump and a high-pressure pump to be vaporized; and is characterized by supplying the liquefied fuel gas, vaporized through the vaporizer, to the main engine and the accessory engine through a transfer piping and a bypass piping, respectively. Further, when the main engine is in a standby mode, fuel gas is supplied to the accessory engine by being bypassed from the transfer piping to the bypass piping rather than being supplied to the main engine. |
