Can a positive-pressure container withstand operation under slight negative pressure?
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Can the water seal tank at the top of the vacuum tower be operated under slight negative pressure? The specific parameters are indicated on the nameplate. What are the requirements in this regard, and what standards need to be followed? ? ? I hope the experts here can help answer it. ! ! !
Is it something to do with low temperatures? Since it’s a water seal, it should be able to come into contact with air – then why isn’t there a breathing valve?
A slight negative pressure must be possible, but it is necessary to strictly adhere to the pressure range specified on the factory nameplate
It’s possible; it’s best to check first and then control the slight negative pressure!
Check it using the calculation method specified in GB150. Be sure to also consider the corrosion margin.
Aren’t these containers still measured based on pressure difference? So I think it should be possible
To be more precise, calculations are required; the formulas for calculating pressure in pressure vessels under positive and negative pressures are different
Designed for positive pressure and verified for negative pressure, the design of many containers takes into account both positive pressure and vacuum operating conditions.