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Navigation: Library > Iconic Diagrams > Hydraulics > Valves > Basic Valves > PilotOperatedPressureReliefValve |
  
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Iconic Diagrams\Hydraulics\Valves\Basic Valves
Domains: Continuous. Size: 1-D. Kind: Iconic Diagrams (Hydraulics).
This model describes a pilot operated pressure relief valve. The resistance depends on the pressure difference:
dp = pa.p - pb.p
pclosed_pilot=pclosed-pt.p
popen_pilot=popen-pt.p
dp < pclosed_pilot => valve closed, only leakage: pa.phi = pb.phi = dp * GLeak
pclosed_pilot < dp < popen_pilot => working range, i. e. valve partially opened
popen_pilot < dp => valve wide open: pa.phi = pb.phi = dp * GOpen
Ports |
Description |
pa, pb |
Both terminals of the hydraulic component. |
pt |
Pilot pressure |
Causality |
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fixed volume flow out pa fixed volume flow out pb fixed volume flow out pb |
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Parameters |
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pclosed popen pclosed_pilot popen_pilot GLeak GOpen |
Valve is closed under this pressure when pilot pressure is 0 [Pa]. Valve is fully open above this pressure when pilot pressure is 0 [Pa]. Valve is closed under this pressure [Pa]. Valve is fully open above this pressure [Pa]. Conductance of closed valve [m3/s.Pa]. Conductance of open valve [m3/s.Pa]. |