Proportional valve calculation

Dzyanis June 21, 2016 0 Calculators cylinder, proportional, valve 755 Views

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Calculations Notes:

The formulas and algorithm of calculations you can find by this link.
Pressure compensated pump with variable displacement is used as a source of pressure and flow.
The spool lands work as orifices and have the same shape on both sides of the spool land.
The same orifice coefficient (Cv) is used for both lands.

Inputs:

Generic input data
Work pressure
Pump max flow
Pressure drop in the return line
Cylinder extension: Result force at the rod Use positive (+) value if the Result force is pushing the rod Use negative (-) value if the Result force is pooling the rod
Cylinder Retraction: Result force at the rod Use positive (+) value if the Result force is pooling the rod Use negative (-) value if the Result force is pushing the rod
Cylinder data
Piston Diameter
Rod Diameter
Cylinder Stroke
Cylinder’s max. work pressure
Proportional valve data
Nominal valve flow @ 100% valve open
Rated pressure drop per land @ nominal flow
Max valve flow rate
Valve’s spool lands ratio (A:B), rs:	:1
Control signal range	…

Results:

Click “Calculate” button to show the results

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