LNG (Liquefied Natural Gas) supply system

The invention relates to an LNG (liquefied natural gas) supply system which comprises an LNG storage module, a BOG (boil-off gas) outlet and an LNG outlet are formed in the LNG storage module, and the LNG storage module is used for storing LNG fuel; the normal-temperature BOG compression module is connected with the BOG outlet through a first BOG pipeline and is used for performing normal-temperature compression and flow control on the BOG output by the LNG storage module; and the static mixing module is connected with the LNG outlet through an LNG pipeline, is connected with the normal-temperature BOG compression module through a second BOG pipeline, and is used for uniformly mixing the BOG output by the normal-temperature BOG compression module and the LNG fuel output by the LNG storage module and carrying out flow control. According to the LNG gas supply system, the BOG condensation efficiency is improved, meanwhile, the cost and energy consumption of mixing of LNG and BOG are reduced, the size of gas supp