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Navigation: Library > Iconic Diagrams > Hydraulics > Valves > Basic Valves > checkvalve |
  
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Iconic Diagrams\Hydraulics\Valves\Basic Valves
Domains: Continuous. Size: 1-D. Kind: Iconic Diagrams (Hydraulics).
This model describes a spring-loaded check valve. The resistance depends on the pressure difference:
dp < pclosed => valve closed, only leakage: pa.phi = pb.phi = (Q_leak/p_nom)*dp
pclosed < dp < popen => working range, i. e. valve partially opened
popen < dp => valve wide open: pa.phi = pb.phi = = Q_nom * sqrt( dp / p_nom) + (Q_leak/p_nom)*dp
Ports |
Description |
pa, pb |
Both terminals of the hydraulic component. |
Causality |
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fixed volume flow out pa fixed volume flow out pb |
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Parameters |
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pclosed popen Q_nom Q_leak p_nom |
Valve is closed under this pressure [Pa]. Valve is fully open above this pressure [Pa]. Turbulent flow at nominal pressure drop [m3/s] Leakage flow at nominal pressure drop, make 1e-12 if unknown [m3/s] Nominal pressure [Pa]. |