How to Balance Flows between two Claricones
How to Balance Flows between two Claricones
(OP)
Hey there guys. Got a situation where I have two claricones. I need to balance the flow between the two. Each feed pipe flowing into a claricone has a control valve and a magmeter to read back flow. I know I need a PID for each of the valve controllers but I think I need a third PID' output to act as a valve position controller. I am trying to maximize flow through each cone while balancing the flow to each one at the same time. Anyone ever run across this. This is my first time with this problem.
Thanks
Rover886
Thanks
Rover886





RE: How to Balance Flows between two Claricones
RE: How to Balance Flows between two Claricones
brennans7
RE: How to Balance Flows between two Claricones
You already know this; but, you have two splits to make. One splitting the flow to each cone, then one splitting the flow to keep the rotational speed in the cone. This doesn't sound hard; but, if split one is not made evenly at 1/2 of the incoming flow, you can overflow something, drain something, or depending on your piping layouts, you can increase/decrease head on these pipes causing unequal flow distribution which can then bouce the valves open/close. All of your flow measuring systems need to be equal in performance and/or could require additional meters or replacements.
Split two will work out because you are only restricting flow in the large inlet pipe. The excess/deficient flow will run through the smaller inlet pipe increasing/slowing the rotation.
RE: How to Balance Flows between two Claricones
Eric
RE: How to Balance Flows between two Claricones
That solution sounds plausible but complex to me.
Another option that seems easier is to maintain a constant level in the wetwell (headtank?). If you calc your hydraulics between the cone and wetwell, set the "level to maintain" above your max flow level, you just have to open/close the valves to keep a constant level and double check to see the flows are even.