Class SafetyValveMechanicalDesign

java.lang.Object

neqsim.process.mechanicaldesign.MechanicalDesign

neqsim.process.mechanicaldesign.valve.ValveMechanicalDesign

neqsim.process.mechanicaldesign.valve.SafetyValveMechanicalDesign

All Implemented Interfaces:

Serializable

public class SafetyValveMechanicalDesign
extends ValveMechanicalDesign

Mechanical design for safety valves based on API 520 gas sizing.

Author:

esol

See Also:

• Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
private class	SafetyValveMechanicalDesign.FireCaseSizingStrategy
private class	SafetyValveMechanicalDesign.GasSizingStrategy
private class	SafetyValveMechanicalDesign.LiquidSizingStrategy
private class	SafetyValveMechanicalDesign.MultiphaseSizingStrategy
static final class	SafetyValveMechanicalDesign.SafetyValveScenarioReport	Lightweight reporting view for consumption by analysis tools.
static final class	SafetyValveMechanicalDesign.SafetyValveScenarioResult	Detailed sizing outcome for a single scenario.
private static interface	SafetyValveMechanicalDesign.SafetyValveSizingStrategy
(package private) static final class	SafetyValveMechanicalDesign.SizingContext	Container holding data shared with the sizing strategies.

Field Summary

Fields

Modifier and Type	Field	Description
private double	controllingOrificeArea
private String	controllingScenarioName
private double	orificeArea
private Map<String, SafetyValveMechanicalDesign.SafetyValveScenarioResult>	scenarioResults
private static final long	serialVersionUID
private final Map<SafetyValve.FluidService, SafetyValveMechanicalDesign.SafetyValveSizingStrategy>	strategies

Fields inherited from class ValveMechanicalDesign

allowChoked, allowLaminar, diameter, diameterInlet, diameterOutlet, dP, FD, FL, fullOutput, inletPressure, outletPressure, valveCharacterization, valveCharacterizationMethod, valveCvMax, valveSizingMethod, valveSizingStandard, valveWeight, xT

Fields inherited from class MechanicalDesign

costEstimate, designStandard, innerDiameter, maxDesignDuty, maxDesignGassVolumeFlow, maxDesignOilVolumeFlow, maxDesignPower, maxDesignVolumeFlow, maxDesignWaterVolumeFlow, minDesignDuty, minDesignGassVolumeFLow, minDesignOilFLow, minDesignPower, minDesignVolumeFLow, minDesignWaterVolumeFLow, moduleHeight, moduleLength, moduleWidth, outerDiameter, tantanLength, wallThickness, weightElectroInstrument, weightNozzle, weightPiping, weightStructualSteel, weightVessel, weigthInternals, weigthVesselShell

Constructor Summary

Constructors

Constructor	Description
SafetyValveMechanicalDesign(ProcessEquipmentInterface equipment)	Constructor for SafetyValveMechanicalDesign.

Method Summary

Modifier and Type	Method	Description
private SafetyValveMechanicalDesign.SizingContext	buildContext(SafetyValve valve, SafetyValve.RelievingScenario scenario)
void	calcDesign()	calcDesign.
double	calcGasOrificeAreaAPI520(double massFlow, double relievingPressure, double relievingTemperature, double z, double molecularWeight, double k, double kd, double kb, double kw)	Calculates the required orifice area for gas/vapor service according to API 520.
private double	calcGasOrificeAreaISO4126(double massFlow, double relievingPressure, double relievingTemperature, double z, double molecularWeight, double k, double kd, double kb, double kw)
private double	calcHemMultiphaseOrificeArea(double massFlow, double relievingPressure, double backPressure, double density, double kd, double kb, double kw)
private double	calcLiquidOrificeArea(double massFlow, double relievingPressure, double backPressure, double density, double kd, double kb, double kw)
private double	defaultDischargeCoefficient(SafetyValve.RelievingScenario scenario)
double	getControllingOrificeArea()
String	getControllingScenarioName()
double	getOrificeArea()	Returns the calculated orifice area.
Map<String, SafetyValveMechanicalDesign.SafetyValveScenarioReport>	getScenarioReports()	Convenience accessor returning a structured report suitable for higher-level analyzers.
Map<String, SafetyValveMechanicalDesign.SafetyValveScenarioResult>	getScenarioResults()	Immutable view of scenario sizing results keyed by scenario name.

Methods inherited from class ValveMechanicalDesign

calcValveSize, displayResults, getActuatorWeight, getAnsiPressureClass, getBodyWallThickness, getBodyWeight, getDesignPressure, getDesignTemperature, getDp, getFaceToFace, getFL, getFlangeType, getInletPressure, getNominalSizeInches, getOutletPressure, getRequiredActuatorThrust, getResponse, getStemDiameter, getValveCharacterization, getValveCharacterizationMethod, getValveCvMax, getValveSizingMethod, getValveSizingStandard, getValveType, getxT, readDesignSpecifications, setValveCharacterization, setValveCharacterizationMethod, setValveSizingStandard, toJson

Methods inherited from class MechanicalDesign

addDesignDataSource, equals, getApplicableStandards, getCompanySpecificDesignStandards, getConstrutionMaterial, getCorrosionAllowance, getCostEstimate, getDefaultLiquidDensity, getDefaultLiquidViscosity, getDesignCorrosionAllowance, getDesignDataSources, getDesignJointEfficiency, getDesignLimitData, getDesignMaxPressureLimit, getDesignMaxTemperatureLimit, getDesignMinPressureLimit, getDesignMinTemperatureLimit, getDesignStandard, getInnerDiameter, getJointEfficiency, getLastMarginResult, getMaterialDesignStandard, getMaterialPipeDesignStandard, getMaxAllowableStress, getMaxDesignGassVolumeFlow, getMaxDesignOilVolumeFlow, getMaxDesignPressure, getMaxDesignVolumeFlow, getMaxDesignWaterVolumeFlow, getMaxOperationPressure, getMaxOperationTemperature, getMinDesignGassVolumeFLow, getMinDesignOilFLow, getMinDesignPressure, getMinDesignVolumeFLow, getMinDesignWaterVolumeFLow, getMinOperationPressure, getMinOperationTemperature, getModuleHeight, getModuleLength, getModuleWidth, getOuterDiameter, getPressureMarginFactor, getProcessEquipment, getRecommendedStandards, getTantanLength, getTensileStrength, getVolumeTotal, getWallThickness, getWeightElectroInstrument, getWeightNozzle, getWeightPiping, getWeightStructualSteel, getWeightTotal, getWeightVessel, getWeigthInternals, getWeigthVesselShell, hasDesignStandard, hashCode, initMechanicalDesign, isHasSetCompanySpecificDesignStandards, setCompanySpecificDesignStandards, setConstrutionMaterial, setCorrosionAllowance, setDefaultLiquidDensity, setDefaultLiquidViscosity, setDesign, setDesignDataSource, setDesignDataSources, setDesignStandard, setDesignStandard, setDesignStandard, setDesignStandard, setDesignStandards, setHasSetCompanySpecificDesignStandards, setInnerDiameter, setJointEfficiency, setMaterialDesignStandard, setMaterialPipeDesignStandard, setMaxDesignDuty, setMaxDesignGassVolumeFlow, setMaxDesignOilVolumeFlow, setMaxDesignPower, setMaxDesignVolumeFlow, setMaxDesignWaterVolumeFlow, setMaxOperationPressure, setMaxOperationTemperature, setMinDesignDuty, setMinDesignGassVolumeFLow, setMinDesignOilFLow, setMinDesignPower, setMinDesignVolumeFLow, setMinDesignWaterVolumeFLow, setMinOperationPressure, setMinOperationTemperature, setModuleHeight, setModuleLength, setModuleWidth, setOuterDiameter, setPressureMarginFactor, setProcessEquipment, setTantanLength, setTensileStrength, setWallThickness, setWeightElectroInstrument, setWeightNozzle, setWeightPiping, setWeightStructualSteel, setWeightTotal, setWeightVessel, setWeigthInternals, setWeigthVesselShell, toCompactJson, validateOperatingEnvelope, validateOperatingEnvelope

Methods inherited from class Object

clone, finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Details

serialVersionUID

private static final long serialVersionUID

See Also:

• Constant Field Values

orificeArea

private double orificeArea

controllingOrificeArea

private double controllingOrificeArea

controllingScenarioName

private String controllingScenarioName

strategies

private final Map<SafetyValve.FluidService, SafetyValveMechanicalDesign.SafetyValveSizingStrategy> strategies

scenarioResults

private Map<String, SafetyValveMechanicalDesign.SafetyValveScenarioResult> scenarioResults

Constructor Details

SafetyValveMechanicalDesign

public SafetyValveMechanicalDesign(ProcessEquipmentInterface equipment)

Constructor for SafetyValveMechanicalDesign.

Parameters:

equipment - a ProcessEquipmentInterface object

Method Details

calcGasOrificeAreaAPI520

public double calcGasOrificeAreaAPI520(double massFlow,
 double relievingPressure,
 double relievingTemperature,
 double z,
 double molecularWeight,
 double k,
 double kd,
 double kb,
 double kw)

Calculates the required orifice area for gas/vapor service according to API 520.

Parameters:

massFlow - mass flow rate at relieving conditions [kg/s]

relievingPressure - absolute relieving pressure [Pa]

relievingTemperature - relieving temperature [K]

z - gas compressibility factor [-]

molecularWeight - molecular weight [kg/mol]

k - heat capacity ratio (Cp/Cv) [-]

kd - discharge coefficient [-]

kb - back pressure correction factor [-]

kw - installation correction factor [-]

Returns:

required flow area [m^2]

calcGasOrificeAreaISO4126

private double calcGasOrificeAreaISO4126(double massFlow,
 double relievingPressure,
 double relievingTemperature,
 double z,
 double molecularWeight,
 double k,
 double kd,
 double kb,
 double kw)

calcLiquidOrificeArea

private double calcLiquidOrificeArea(double massFlow,
 double relievingPressure,
 double backPressure,
 double density,
 double kd,
 double kb,
 double kw)

calcHemMultiphaseOrificeArea

private double calcHemMultiphaseOrificeArea(double massFlow,
 double relievingPressure,
 double backPressure,
 double density,
 double kd,
 double kb,
 double kw)

calcDesign

public void calcDesign()

calcDesign.

Overrides:

calcDesign in class ValveMechanicalDesign

getOrificeArea

public double getOrificeArea()

Returns the calculated orifice area.

Returns:

area [m^2]

getControllingOrificeArea

public double getControllingOrificeArea()

Returns:

the largest required orifice area across all configured scenarios

getControllingScenarioName

public String getControllingScenarioName()

Returns:

the name of the scenario requiring the maximum area, or null if none

getScenarioResults

public Map<String, SafetyValveMechanicalDesign.SafetyValveScenarioResult> getScenarioResults()

Immutable view of scenario sizing results keyed by scenario name.

Returns:

map of results

getScenarioReports

public Map<String, SafetyValveMechanicalDesign.SafetyValveScenarioReport> getScenarioReports()

Convenience accessor returning a structured report suitable for higher-level analyzers.

Returns:

list of report entries preserving scenario insertion order

buildContext

private SafetyValveMechanicalDesign.SizingContext buildContext(SafetyValve valve,
 SafetyValve.RelievingScenario scenario)

defaultDischargeCoefficient

private double defaultDischargeCoefficient(SafetyValve.RelievingScenario scenario)