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The pressures of the two storage tanks are different, while all other parameters are the same. How can one pump be used to draw water from both tanks evenly at the same time?

2019-04-25View Original

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This post was last edited by FORREST_GUMP on 2019-4-25 at 15:45. Guys, two storage tanks have different pressures; all other parameters are the same. There is continuous inflow and outflow. How can we use just one pump to draw water from both tanks evenly? (The attachment is available in both image and CAD formats)
Reply #22019-04-25
:Can’t the two cans be connected together? If nothing else works, design a level control valve interlock, one for each tank
Reply #32019-04-25
Two tanks can be connected in series, but if they have different pressures, the amount of water pumped out by the pump will also differ between the two tanks; this may result in Tank 1 becoming empty while Tank 2 remains full...
Reply #42019-04-25
:Sleepy: After connecting them together, add a control valve to the pipeline in question, and interlock it with the liquid level in the tank at high pressure. This means that the liquid from the high-pressure tank is discharged into the low-pressure tank, and then drainage takes place through that low-pressure tank. The liquid level in the low-pressure tank is also interlocked with the control valve at the pump’s outlet, so that the liquid levels in both tanks can remain stable
Reply #52019-04-25
Thank you. Is it like this?
Reply #62019-04-25
It should be possible. The simplest and most cost-effective method is to connect the two tanks with a pipe whose diameter is slightly larger than that of the pump’s inlet pipe, and then connect the pump to draw liquid from them. With this drawing method, the liquid level in tank 2 is always 20 centimeters higher than that in tank 1. Otherwise, a control system has to be used. A level controller can be used to avoid drainage.
Reply #72019-04-25
Thank you. Also, I would like to ask if it is possible to connect Tank No. 1 using an inverted U-shaped bend (with a height of about 1.5 meters)? This eliminates the need for a level gauge and a control valve
Reply #82019-04-25
Thank you, sir. My understanding is different from yours: the pressure difference between tank 1 and tank 2 is 20 KPa. When the two tanks are connected by a pipe, without starting the pump, the liquid level in tank 2 is 2 meters higher than that in tank 1. The total height of the tank is about 1.5 meters, and Tank No. 2 will be filled to capacity.
Reply #92019-04-25
Will an inverted U-shaped bend cause the tank in which it is installed to fill with water?

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