Regarding the setting of the oxygen vent valve
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In an emergency, how should the oxygen vent valve operate? Please explain it by category!
You need to specify which oxygen vent valve it is, whether the process involves internal compression or external compression, and whether it is located on the oxygen process pipeline or on the oxygen cylinder filling manifold
Yes! Explain each parameter and indicate the specific location.
Classification instructions! Classification instructions! Why not also talk about those on oxygen pipelines?
For this valve, it is best to use a on-off valve, which has only two operating modes – on and off – and provides fast switching. As for whether it is an open qi condition or a closed qi condition, you need to consider the requirements
We suffered because the oxygen airlock valve opened too slowly; the demand for oxygen in the rear section suddenly decreased, and before it could react, cavitation occurred in the liquid oxygen pump. So this hair needs to be able to grow fast
External compression: if the oxygen supply to the downstream system is cut off urgently, once this is detected, we should open the vent and try to keep the outlet pressure of the compressor from rising too rapidly, maintaining stability.
The operation of this valve is primarily based on proper settings in the instrumentation and control system. You can appropriately set functions such as valve self-regulation and rapid valve switching based on the characteristics of the valve (pneumatic/electric).
Generally, both safety valves and vent valves are air-operated valves (controlled by instrument air). In case of emergencies such as power outages or interruptions in the supply of instrument air, the supply of air to the valve is cut off, causing the valve to open fully immediately, thereby providing protection.
What you’re referring to is probably the valve PID integral!