Unstable traffic
Thread Content
There is a water tank on the third floor of the workshop, from which liquid is sent to the dissolving tank on the first floor. An electromagnetic flow meter and an electrically operated control valve, DN50, have been installed there. Previously, when the valve was fully open, the maximum flow rate was 20 cubic meters per hour; however, these days the flow rate is unstable, and with the valve fully open the flow rate is only around 6 cubic meters per hour. The valve and the flow meter themselves appear to be in good condition, but the cause of this issue cannot be identified. I need everyone’s help.
Are the actual flow rate and the value indicated by the flow meter both around 6 cubic meters? If they are the same, it might be due to issues with the pipes. For reference only.
If the liquid level in the tank is not full, the pressure is low, and as a result the flow rate is low
Does the water tank have a level gauge? If available, the hourly flow rate can be calculated using a level gauge. If the actual flow rate is still only 6 T, then the pipes need to be checked; if the actual flow rate is much higher than 6 T, then there is a problem with the flow meter
Check if the pipes are blocked and what the water level in the sink is...
Check the pipeline from the level tank to the dissolution tank to see if someone has reduced one of the process isolation valves
When you say the electrically controlled stop valve is fully open, you must mean that it is indicated as fully open; this needs to be confirmed.
It is still necessary to first confirm whether the actual flow rate matches what is displayed. If it does, then the input and output factors need to be ruled out; for the input side, this includes things like pressure and flow rate, while for the output side, it is necessary to check whether the valve is indeed fully open.