BOG energy storage pressure differential LNG gas station

The utility model provides a BOG energy storage pressure differential LNG gas station, the LNG tank wagon has, boosting vaporizer, LNG low temperature storage tank, air entrainment equipment and LNG liquid adding machine, be equipped with LNG intake pipe and BOG blast pipe between air entrainment equipment and the LNG liquid adding machine, LNG liquid adding machine passes through BOG return line and connects the BOG heater, LNG low temperature storage tank and intake pipe, the BOG heater connection BOG buffer tank, the BOG compressor is connected to the BOG buffer tank, the BOG holding vessel is connected to the BOG compressor, the BOG holding vessel passes through the pipeline and connects intake pipe and BOG return line respectively, LNG low temperature storage tank passes through BOG return line and connects the BOG heater, the work of connecting tube cooperation stop valve, replace the heat preservation pump pond of falling the low temperature immersed pump and matching completely, saving equipment purchasing cost, the BOG compressor is gaseous with the help of retrieving the BOG who stores certain pressure, the power of motor reduces 65% than the power of motor of low temperature immersed pump, practice thrift the operation cost of gas station, and simultaneously, can realize the function that liquefies again in the gaseous station of low temperature storage tank BOG, furthest's reduction BOG discharges, energy saving and reduction environmental pollution.