The flow rate into the resin tower is decreasing abnormally.
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This post was last edited by sunjl1981 on 2013-1-6 at 20:51. The pump used to deliver purified brine to the resin tower is regulated via frequency conversion; generally, the pump pressure ranges between 0.28 and 0.32. However, sometimes strange phenomena occur: when the pump pressure remains unchanged, the flow rate of brine entering the resin tower can vary by -5 m3/h. At such times, the pressure in the resin tower is still normal, and after some time the flow rate gradually increases again. What is causing the drop in traffic? Could it be normal fluctuations? This phenomenon didn’t exist before; if it were a normal fluctuation, then this traffic level would be way too high. Is it due to something inside the resin tower? I hope a friend who knows about the sea can give an answer. # + + . hcbbs
Is it a problem with the frequency conversion? ?
Reply to 2# wangzhihou: The pump pressure of the variable-frequency pump remains unchanged, and its operation level also doesn’t change; it’s likely not due to the variable frequency feature.
It is related to the value set for the flow meter, as well as the PID parameters set. If there are no issues with frequency conversion, then it’s necessary to check the design parameters of the flow meter and adjust the amplitude level
Reply to 4# jlysy: The opening degree of the variable frequency pump hasn’t changed, so it’s probably not due to the PID. After setting a certain pressure, it is switched to automatic mode; the pressure remains stable, but the flow rate decreases.
The internal structure of the resin column is well known; as long as the pressure and pressure difference within the column are normal, it should not be due to problems with the resin column itself. Check to see if there is air trapped inside the variable-frequency pump
1. Check whether the frequency of the variable-frequency pump is normal； 2. During major repairs, inspect the pipelines from the brine water pump to the resin tower to check for any blockages in the equipment ； 3. Check the brine distributor inside the resin tower.