The invention relates to a vacuum insulation ultralow-temperature medium land conveying device. The upper face of the back end of a rotating inner
pipe is connected with a liquid-phase connector through a liquid-phase rotating connecting head. A gas-phase connector is fixedly connected to a stand column. The gas-phase connector is connected with a gas-phase channel in the rotating inner
pipe. A gas-phase outlet and a liquid-phase outlet are formed in the
lower face of the front end of the rotating inner
pipe. The gas-phase outlet is connected with a gas-phase valve through a gas-phase rotating connecting head, a gas-phase rotating pipe, a gas-phase worm and gear device, a gas-phase vacuum outer pipe and a gas-phase connector
gravity center adjusting pipe. The liquid-phase outlet is connected with a liquid-phase valve through the liquid-phase rotating connecting head, the liquid-phase worm and gear device, a liquid-phase vacuum outer pipe, two liquid-phase rotating connecting heads and a liquid-phase connector
gravity center adjusting pipe. The phenomenon of cold loss caused by original assembling and disassembling arm frosting and freezing is avoided,
BOG generated by gasifying can be lowered,
system circulating
processing pressure can be relieved, leakage caused by rotating part low-temperature deforming can be overcome, connector freezing is prevented, connecting speed is improved, disassembling and assembling time is shortened,
nitrogen protection is of no need, and operation cost is saved.