Cryogenic liquid pumps mainly consist of a motor, drive shaft, flow passage, insulation body, bearings, and sealing structure. By controlling the pump's start and stop, as well as frequency conversion adjustments, these pumps achieve the function of transporting low-temperature fluids. They can also adjust flow rate and head. These pumps are widely used for the transportation of low-temperature fluids such as liquid helium, liquid hydrogen, liquid nitrogen, and LNG. They are the core equipment in low-temperature circulation systems.