checkvalve-states

Navigation:  Library > Iconic Diagrams > Hydraulics > Valves >

checkvalve-states

Previous pageReturn to chapter overviewNext page

Library

Iconic Diagrams\Hydraulics\Valves

Use

Domains: Continuous. Size: 1-D. Kind: Iconic Diagrams (Hydraulics).

Description

CheckValve-States

This model describes a spring-loaded check valve with parasitic volumes. The resistance depends on the pressure difference:

 

 

 

dp < pclosed => valve closed, only leakage: pa.phi = pb.phi = dp * GLeak

pclosed < dp < popen => working range, i. e. valve partially opened

popen < dp => valve wide open: pa.phi = pb.phi = K * sqrt(dp - pclosed);

CheckValve

Interface

Ports

Description

pa, pb

Both terminals of the hydraulic component.

Causality

 

preferred pressure out pa

preferred pressure out pb

 

Parameters

 

CheckValve\pclosed

CheckValve\popen

CheckValve\Q_nom

Valve is closed under this pressure [Pa].

Valve is fully open above this pressure [Pa].

Turbulent flow at nominal pressure drop [m3/s].

CheckValve\Q_leak

Leakage flow at nominal pressure drop, make 1e-12 if unknown [m3/s]

CheckValve\p_nom

Va\V

Va\p_initial

Vb\V

Vb\p_initial

Nominal pressure [Pa]

Volume of oil under pressure [m3] (hidden)

The starting pressure of the volume [Pa] (hidden)

Volume of oil under pressure [m3] (hidden)

The starting pressure of the volume [Pa] (hidden)