Working principle of cryogenic liquid pump

In the air separation unit, low-temperature liquid is transported by centrifugal cryogenic pump. In order to ensure the reliable operation of the equipment, two sets of low-temperature pumps are generally equipped, one for use and one for standby. During normal operation, the main pump runs at full load, and the standby pump is in standby state under low load operation. Since the working medium temperature of cryogenic liquid pump is about -180°C, the working pressure is very high, and the pump body is installed in the cold box. When the pump fails, it is extremely difficult to maintain. Therefore, how to maintain the stable and reliable operation of cryogenic liquid pump is of great significance.

With the increasingly wide application of cryogenic liquid, in order to reduce material cost, improve storage efficiency, reduce equipment floor area, reduce energy consumption in the process of manufacturing, transportation and installation, and realize the green manufacturing concept of simultaneous development of safety production and energy saving, large-scale design has become the leading development direction of atmospheric pressure storage tank.   At present, the com...