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低压自动补气回路用于重水零功率堆自动补气。它的作用是使重水所到之处都有惰性气体覆盖,以保证堆用重水的纯度。同时,维持系统压力高于周围压力,但又不能太高,否则给密封造成困难。因为零功率堆是个实验装置,所以要求补气频繁,同时要求在堆系统内压力低于294.2Pa时,自动补气系统能自动补气,当压力回升到294.2Pa时又能自动停止补气。由于某种原因使堆内压力等于或大于980.7Pa时,它又能自动排
Low-pressure automatic gas recovery circuit for heavy water zero power reactor automatic qi. Its role is to make heavy water wherever inert gas coverage, in order to ensure the purity of heavy water heap. At the same time, to maintain the system pressure is higher than the surrounding pressure, but not too high, otherwise it is difficult to seal. Because the zero-power reactor is an experimental device, it requires frequent gas production and requires that when the pressure in the reactor system is lower than 294.2 Pa, the automatic gas-supplementing system can automatically supplement gas and automatically stop gas supply when the pressure rises to 294.2Pa. For some reason when the pressure inside the reactor is equal to or greater than 980.7 Pa, it is automatically discharged