Pump dynamics definiton
Pump dynamics definiton
(OP)
I have an issue with the definition of the "pump dynamics".
Can somebody explain to me what it means exactly?
Thank you!
Peter H.
Can somebody explain to me what it means exactly?
Thank you!
Peter H.





RE: Pump dynamics definiton
"Pump dynamics" at its simplest level could refer to the general nature of how pumps function, and I'm not sure that's the definition you're looking for.
RE: Pump dynamics definiton
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RE: Pump dynamics definiton
it should be related to the ability of a pump to deliver required volume of liquid in very short time after start pumping or, control valve opening.
I have developed a hydraulic system for direct injection of herbicides, which includes a gear pump, pressure relief valve and a PWM proportional solenoid valve placed upstream of the injection point. The flow rate is controlled by using this PWM valve.
The issue is when I fully open the PWM valve, the pressure in the pipe drop down immediatelly. Than it takes a long time to get the right pressure again and hence the required flow rate.
I guess, the problem must in the pump used. If there will be a "stronger" pump (pump with a better dymanics) the pressure increase would be much more faster.
Now, I don't how to define or describe this situation. How is the relation between the flow rate, revolutions, pressure and time. Eventually how to choose the right pump.
Thank you
Peter H.
RE: Pump dynamics definiton
FWIW, a gear pump is not a dynamic machine, it is a displacement type of tool.
In dynamic machines the energy is used to impart a high velocity to the fluid converted to developed pressure within the pump and piping later on.
Displacement machines apply energy to the fluids by enclosing them in moving volume boundaries; the pressure increases up to the value required to move the fluid through the discharge system.
RE: Pump dynamics definiton
Going the Big Inch!![[worm] worm](https://www.tipmaster.com/images/worm.gif)
http://virtualpipeline.spaces.msn.com
RE: Pump dynamics definiton
meanwhile, i hope this helps with the situation.
good luck!
-pmover
RE: Pump dynamics definiton
A dictionary definition in this case is also vague.
Naresuan University
Phitsanulok
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