STRUCTURE OF EXHAUST FOR FUEL GAS SUPPLY SYSTEM OF LIQUEFIED NATURAL GAS

摘要

A fuel supply outlet structure for a liquefied gas supply system according to a first embodiment of the present invention comprises: a manhole frame which forms a path of a liquefied gas storage tank; and an opening/closing unit which is arranged in the manhole frame, opens the path so that an outlet for discharging fuel from the liquefied gas storage tank, and closes the path at ordinary time. The opening/closing unit is formed with a thin film to be crushed by the load of the outlet as the outlet descends. The fuel supply outlet structure for a liquefied gas supply system according to the present invention is able to: prevent a safety accident by blocking liquefied gas or BOG from being leaked from the liquefied gas storage tank as the liquefied gas storage tank is closed by the opening/closing unit at ordinary time; and simultaneously prevent a safety accident caused by BOG leakage as the path is not exposed during the installation process of the outlet by opening the path in order to install the suction line of the outlet in the liquefied gas storage tank after the outlet is installed in the manhole frame in a state in which the liquefied gas storage tank is closed by the opening/closing unit and the path is sealed by the outlet when the path is opened for the repair of a boosting pump.