Construction of liquid oxygen pump

Liquid gasification filling system consists of liquid storage tank, liquid pump and air purifier. In order to ensure the normal operation of the liquid pump, besides the reliability of the structure of the pump itself, the piping technology is also very critical. Improper piping, if it is light, it will cause "cavitation phenomenon" of the liquid pump, and the decrease of flow rate will lead to large mechanical loss of the pump; if it is serious, the filling pressure cannot be improved due to the serious gasification of the liquid in the pipe, the pump cannot work normally. Therefore, the following problems should be paid attention to when piping: 1) the base of the storage tank should be over 1m higher than the center of the liquid oxygen pump to ensure that the inlet of the pump has a higher static pressure (higher than the saturation pressure corresponding to the temperature ); 2) shorten the length of the pipeline from the storage tank to the pump inlet as much as possible to re...

(1) advantages and disadvantages of nitrogen cyclic pressurization internal compression process Linde company of Germany developed the first air separation equipment for the internal compression process of the liquid oxygen pump in 1970s. However, this 35100m3/h air separation plant used in a fertilizer plant in Navmada, India, is not a common one that uses the high pressure air produced by the Air booster as a heat source to vaporize the high pressure liquid oxygen in the main heat exchanger, instead, the nitrogen circulating booster is adopted to reheat the gas and nitrogen on the top of the pressure tower through the heat exchanger, and then compress them into high-pressure nitrogen through the nitrogen circulating booster. The high-pressure nitrogen enters the high-pressure heat exchanger to vaporize liquid oxygen, and it enters the pressure Tower again after being liquefied. Three years later, in 1979, Linde company provided 3 sets of 28000m3/h air separation plant for Zhejiang...