Nitrogen seal valve
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This post was last edited by stevenyjz on 2009-9-21 at 13:10. Dear experts: Could you please explain what the nitrogen seal valve on the oil tank does? And its working principle. Thank you.
The function of the nitrogen sealing valve is to prevent the volatilization of the material inside the tank, providing protection for the tank when material is added to or removed from it (the pressure of the gas phase during feeding increases, while the pressure of the gas phase during discharging decreases). A complete nitrogen sealing system consists of a nitrogen supply valve and a nitrogen inlet valve. When the pressure of the gas phase at the top of the tank is lower than the designed value, the nitrogen supply valve automatically supplies additional nitrogen; when this pressure is higher than the designed value, the nitrogen release valve automatically releases nitrogen until the pressure returns to the desired level. In essence, the nitrogen sealing valve is a self-acting control valve – you should be familiar with self-acting control valves, as their principle is the same