The negative pressure that an atmospheric-pressure tank can withstand
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What negative pressure can an atmospheric-pressure tank withstand? Generally, I see a value of -500 pascals, but if the exhaust gas from the storage tank needs to be recovered and the pressure required by the fan is 3000 pascals, then can the storage tank withstand that?
The poster needs to list the detailed parameters of the atmospheric pressure tank——atmospheric pressure storage tanks can be flattened if subjected to negative pressure (which is dangerous)
Positive pressure, negative pressure, and normal pressure all need to be calculated, as well as the design strength, stiffness, and stability!
Since it is designed as an atmospheric-pressure tank, why does it need to withstand negative pressure? Atmospheric pressure tanks are equipped with openings or safety valves to prevent negative pressure; normal operation does not result in negative pressure that could cause damage.
To determine the detailed design parameters of the storage tank, vacuum pumping of the tank falls outside the category of containers; as long as the wall thickness is sufficient, it can withstand negative pressures.
The main thing to check is the top of the tank; if it’s an old tank, then the wall thickness needs to be measured for calculation purposes. Check the design parameters for the new tank.
Check the design conditions of the tank or conduct some calculations; a tank at atmospheric pressure cannot be used under negative pressure.
Previously it used normal-pressure tanks; now it operates under negative pressure, at -50 KPA
Professional calculations are required; negative pressure makes it particularly easy to lose stability
This depends on the design; the specific negative pressure value that can be tolerated must be taken into account during the design, along with calculations regarding stiffness and stability
It is recommended that the poster refer to the negative pressure conditions for atmospheric pressure vessels in API2000. The discharging process itself is one of the conditions involving negative pressure; therefore, atmospheric-pressure containers must have a design value for negative pressure