The evaporation loss in the liquid oxygen storage tank is too high; the vent valve keeps releasing gas, resulting in a loss of over 2 tons per day. Are there any good solutions?
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As stated in the title, a few additional details: the backup pump remains in idling mode, the pressure in the liquid oxygen storage tank is kept at 10 kPa, and the setting pressure for the safety valve is 20 kPa.
The safety valve trips at 20 Kpa – that’s really low. There’s nothing you can do about it; since the backup pump is running continuously, the amount of gasification must be high. I still think the pressure setting of your safety valve is too low; you should check it again. . . Experience speaks.
Have you measured the daily evaporation rate of your liquid oxygen storage tanks?
The last edit to this post was made by newmanpop on 2015-6-16 at 13:38. It is recommended to increase the pressure in the liquid oxygen storage tank to 0.6–0.8 Mpa, and to readjust the setting of the safety valve
That’s how atmospheric pressure storage tanks are designed. The supply is pressurized by a backup pump and enters the pipeline network through the carburetor.
It’s a little over 0.4 per thousand; the design aims to keep it below 0.3 per thousand.
Designed for atmospheric pressure tanks, it shouldn’t be able to be set that high
The original poster is discussing large atmospheric pressure storage tanks, not medium pressure tanks~~
The original poster is discussing large atmospheric pressure storage tanks, not medium pressure tanks~~
It is estimated that the high amount of vaporization was caused by the reverse rotation of your emergency pump, which in turn led to higher evaporation losses~~
Two methods: 1. Reduce the subcooling of the liquid oxygen entering the storage tank. 2. Check whether the interlayer gas is normal and whether the pearlescent sand has settled; add more pearlescent sand if necessary.