Seeking expert help: adjusting constant traffic flow
Thread Content
In the low-cost hydrogen peroxide production section of the factory, manual control is currently used, with glass rotameters to regulate the dripping rate； Now, it is desired to switch to automatic control using a flow meter and a pneumatic control valve. The diameter of the original dripping pipeline was DN40, with a dripping flow rate of 1–1.8 m3/h. Will an electromagnetic flow meter with a DN15 diameter be sufficient to meet the requirements? Is it feasible to use a pneumatic control valve with a DN15 diameter?
It’s best to change the pipes as well; the flow rate is too low
Theoretically, it is feasible; the flow meter needs to be accurate, and the control valve should be of better quality.
Yes, change the section where the flow meter is installed for DN40 to a reduced diameter of DN15
Hydrogen peroxide is added by gravity, over a height difference of 1 meter. I’m worried that the adjustment precision isn’t high enough
It is necessary to calculate the size of the valve core for the control valve; an inner diameter of 6 should be sufficient
The pressure difference is indeed very small; it is recommended that the supplier of the control valve and flow meter conduct detailed calculations to determine the appropriate diameter and model, so as to avoid issues once the modification is completed.
Should a pneumatic control ball valve or a diaphragm control valve be chosen for the valve?
Select the electromagnetic flowmeter diameter based on the flow rate range