The invention discloses a cold
insulation system and method for an LNG discharging pipeline, and belongs to the technical field of LNG pipeline cold insulation. The
system comprises a discharging pipeline, a connector and an
electric control valve, one end of the connector is fixed to the discharging pipeline through bolts, the other end of the connector is connected with a
butt joint pipe, and the
electric control valve is installed on the discharging pipeline through screws; the
electric control valve and the connector are fixed to the two ends of the discharging pipeline respectively, the
butt joint pipe is detachably connected with a
butt joint assembly, the end, away from the butt joint
pipe, of the butt joint
assembly is connected with a medium supply
assembly, the end, away from the connector, of the discharging pipeline is connected with a
recovery assembly, and the other end of the
recovery assembly communicates with the medium supply assembly. The medium is guided out by the medium supply assembly and enters the butt joint pipe along the butt joint assembly, and the medium returns into the medium supply assembly through the discharging pipeline and the recycling assembly. The
system is convenient to
mount and dismount, high in
automation degree, high in medium cyclic
utilization rate, capable of improving the working efficiency, capable of storing residual cold energy and fully utilizing the residual cold energy, and capable of saving resources and
energy consumption.