WOLFRAM SYSTEM MODELER
ThreeWayFlowControlValveAssembly with a restriction and a pressure compensating valve |
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Diagram
Wolfram Language
In[1]:=
SystemModel["Hydraulic.Valves.FlowControl.ThreeWayFlowControlValve"]
Out[1]:=
Information
This is a model of a three-way flow control valve with lumped volumes. When the pressure on port a is larger than on port b, the valve attempts to maintain a constant flow by "bleeding" flow to port t. When the pressure on port b is larger than port a, the "bleed" flow to tank is blocked.
Implementation
The model is an assembly consisting of a restriction and a pressure compensating valve. When the pressure on port a is larger than on port b and the pressure drop over the restriction increases, the spool in the compensating valve opens. When the pressure on port b is larger than port a, the spool is kept at its resting position, which blocks the "bleed" flow to tank.Parameters (10)
| medium |
Value: Oil() Type: Medium Description: Medium in the component |
|---|---|
| ARestriction |
Value: 0.001 Type: Area (m²) Description: Opening area of restriction |
| CdRestriction |
Value: 0.62 Type: Real Description: Coefficient of discharge for the restriction |
| V |
Value: 0.0001 Type: Volume (m³) Description: Volume of assembly |
| Gleak |
Value: 1e-020 Type: PressureDependentLeakage (m³/(s⋅Pa)) Description: Leakage between ports |
| pMaxCompensator |
Value: 10000.0 Type: Pressure (Pa) Description: Pressure when compensator valve is fully closed |
| pMinCompensator |
Value: 5000.0 Type: Pressure (Pa) Description: Pressure when compensator valve starts to close |
| t1Compensator |
Value: 0.01 Type: Time (s) Description: Time constant for first-order system of compensator valve |
| AMaxCompensator |
Value: 0.001 Type: Area (m²) Description: Maximum opening area of compensator valve |
| CdCompensator |
Value: 0.62 Type: Real Description: Coefficient of discharge for the compensator valve opening |
Connectors (3)
Components (4)
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medium |
Type: Medium Description: Medium in the component |
|---|---|---|
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restrictionTurbulent |
Type: RestrictionTurbulent Description: Turbulent restriction |
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pressureCompensatingValve |
Type: PressureCompensatingValveNormallyClosed Description: Pressure valve, controlled by the pressure difference between the ports |
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volume |
Type: Volume Description: Fixed volume with fluid storage |