The pulse injection modes, without tanks or filling intervals, reduce liquid nitrogen consumption and operational costs. The vacuum insulation insulation has an ultra-low daily evaporation rate (NER) of 0.15 liters per hour, reducing operational costs. The nozzle nitrogen care system (Nose Blanking) prevents external air from entering the spray chamber and frosting inside. The liquid ammonia horizontal positioning control stabilizes the horizontal pressure, improves the accuracy of liquid nitrogen dosage, and reduces the liquid nitrogen loss caused by liquid nitrogen "flash loss". The liquid level is controlled by the power system positioning of the liquid gas phase separator to ensure that liquid nitrogen is in an ultra cold state, improves the quality of "pure liquid phase", helps buffer the nitrogen filling function for liquid nitrogen dosage accuracy, effectively prevents liquid helium from rebounding and splashing out, stabilizes the liquid nitrogen pickup volume, and ensures that the tank is flattened and stable. Filter (option) 10 μ m, removes particulate pollution
