pipeliners - control valves 11-9-09
TRANSCRIPT
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Control Valve Design &Control Valve Design &A licationsA lications
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AGENDAAGENDAAGENDAAGENDA
Introductions
Control Southern/PMCC Team Local Support
Control Valve Design Pipeline Applications
REXA XPAC Series 2 Electrohydraulic Actuators Pipelines
Products for Isolation and Automation Needs
Wrap-Up
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Your Local Support TeamYour Local Support TeamYour Local Support TeamYour Local Support Team
50 Years Experience as Fisher Controls Representative in Southeast
uppor oca pe ne erm na s cus omers nc u ng: an a as g ,
Colonial Pipeline, Dixie Pipeline, Plantation Pipe Line, andTransmontaigne
Local Control Southern Application Engineers and Managers have yearso n- ouse now e ge es gn ng ow con ro so u ons or an a on
Provide On-site support during commissioning and if issues arise
REXA Representative in Southeast since 1993
Over 1,500 REXA actuator installations in SE since 1993
, - , Provide on-site support during commissioning and if issues arise
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ISA DefinitionISA DefinitionISA DefinitionISA Definition
power opera e ev ce w c mo es e u ow ra e n
a process control system. It consists of a valve connectedto an actuator mechanism that is capable of changing thepos on o a ow con ro ng e emen n e va ve nresponse to a signal from the controlling system.
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Selection ParametersSelection ParametersSelection ParametersSelection Parameters
TemperatureConsiderations
Material Selection
Flow Characteristics Capacity
Shutoff Classifications
Cavitation and Flashing
End Connections Noise Considerations
Cost Considerations Maintenance
Considerations
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B16.34 vs. API 6D
ANSI B.16.34
The Fisher V260 fully meets the design criteria established by ANSI-B16.34. Specifically, ANSI now has ruled on a 3-piece
ball valve and applicable wall section dimensions.
Most pipeline ball valves originated in design to API - 6D criteria which only addresses stresses and test pressures with no
specific wall thickness dimensional criteria. Some manufacturers appear to take a gray interpretation of ANSI B16.34 and
actually publish compliance to that standard in their Sales brochures.
- -. .
Informational requirements are available on demand. It is our contention that certain manufacturers do not comply if
audited to certify same. This issue should be of assistance in product differentiation of the new V260 ball valve.
This is a complex issue to raise with a customer but many Oil & Gas Companies (Distribution and Transmission) areevolving their design standards for control valves from API-6D to ANSI B16.34. Some manual and power on-off devices
are also under scrutiny.
In summary ANSI B16.34 requires more metal in the valve body than API-6D. Control valves are energy absorbers by
function as different from block valves. The additional metal in a control valve is generally a positive factor in systems
design philosophy.
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CapabilitiesCapabilities
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11. Pump Station Pressure Control
2. Delivery Valve / Terminal Inlet
2
Pressure Control
3. Metering Balance Control Valves
53
4
.
5. Pump Recycle Valve
4
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---- Controls discharge pressure from pump stations
control
Most commonl a 600/900# 16 24 V250/V260
Increased throughput requirements has increasedum dischar e ressure be ond 1500 si
Use of a control valve eliminates the need forvariable frequency drives
Can be a 2x adder to the price of the pump
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22 -- Delivery Valve / Terminal Inlet PressureDelivery Valve / Terminal Inlet Pressure22 -- Delivery Valve / Terminal Inlet PressureDelivery Valve / Terminal Inlet Pressure
Reduces pressure from mainpipeline into terminal yard
ary ng n e pressures w a
150 psig outlet pressure Varying inlet pressures creates
Typically requires cavitationprotection for higher dP cases
characterized attenuator tominimize valve size andmaximize cavitationprotection
Must be designed to acceptelectrohydraulic actuation
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V260 OptionsV260 OptionsV260 OptionsV260 Options
Dual seals &
2 stage domesHigh Density
Dome
Characterized Dome
Attenuation thru 65
thru 90
Linear
Characteristic
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---- Will be multiple meter runs into each terminal yard (2 to 11
parallel runs)
Valves positioned to balance flow across all meter runs
Maximum capacity per run is 1650 m3/hr
Line ca acit limited to 40% - 80% due to turbine meterturndown
10 16 8560/8532 required
Accurate control desired to properly account for flow in and out ofthe facility
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----
Valve controls backpressure (35 psig) on turbine
Depending on head built up in tank farm, valve
V250 most commonly used, but V260 may be
necessary ere s po en a or cav a on
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---- Recycles flow around the pump to protect against
dama in cavitation
Typical pressure drops up to 1500 psid
3 8 ET with Cavitrol III 2-stage trim the most
common solution
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Gas Pi eline A licationGas Pi eline A lication
CapabilitiesCapabilities
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Three major types of gas pipelines: Gathering,
Transmission, Distribution
Used for transmitting Natural Gas to and from storagefacilities and on to homes, power plants, etc.
Most valves require noise attenuation due to high flowrates and proximity to people
Particular materials are required to combaterosion/corrosion
-flow/pressure control valves
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---- In most cases, this is done with two valves in
series that o erate off downstream ressure
If one fails open, the other valve will take over control
to account for reduced inlet pressure
Wide-open monitor system
Worker/monitor system
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Three small independent jets
Small jets recombine to form large jet:
- lower eak fre uenc
- higher power- higher conversion efficiencies
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Compressor surge is minimum flow condit ion where the
compressor becomes unstable
Flow reversal occurs because there is not enough gas in the
impeller to impart momentum
Full flow reversals can dama e the com ressors bearin sbecause of thrust reversals
Damaged bearings can further damage the seals and impeller
CompressorDriver CompressorDriver
FEPT
ST
FEPT
ST
FT PTFT PT
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Antisurge Valve IssuesAntisurge Valve IssuesAntisurge Valve IssuesAntisurge Valve Issues
The valve must respond to tripsignals in less than two seconds
The valve is sized to twice itsnormal capacity
The valve must handle wide flowvariations
The valve must provide stable
the surge line as possible
Excessive overshoot or
undershoot may induce
Higher surge margins meancostly recycle operation
Fisher E-body with Whisper
r m or a w anAerodome attenuator are typicalsolutions
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V260 Pipeline Severe Service Ball Valve withV260 Pipeline Severe Service Ball Valve with
REXA Electraulic ActuationREXA Electraulic Actuation
V260 Pipeline Severe Service Ball Valve withV260 Pipeline Severe Service Ball Valve with
REXA Electraulic ActuationREXA Electraulic Actuation
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V260 Pipeline Severe Service Ball Valve withV260 Pipeline Severe Service Ball Valve withREXA Electraulic Actuation (cont.)REXA Electraulic Actuation (cont.)V260 Pipeline Severe Service Ball Valve withV260 Pipeline Severe Service Ball Valve withREXA Electraulic Actuation (cont.)REXA Electraulic Actuation (cont.)
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pac er es
ctuators & Drives
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Xpac Series 2 Actuators
The Xpac self-contained microprocessor based electro-hydraulic actuator integral control
More precise and stiffer than pneumatics More durable and higher duty cycle than electrical
More compact and cleaner than conventional hydraulics
Electraulic was coined by REXA to describe thisrevo u onary ec no ogy
Simplicity of electric operation
owero y rau cs Flexibility of user configured control
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Xpac Series 2Xpac Series 2 -- X2X2Xpac Series 2Xpac Series 2 -- X2X2
Experience in the most demanding applications has developedextensive in-depth understanding of the product resulting in
One piece power module reduces the number of seals and fastenersimproving reliability.
Added gauges with isolation valves to standard units.
Now incorporate pressure limiting valves to eliminate over pressuring
the actuator and extend cylinder seal life.
Motor seal installation is simplified and are now redundant for anextra level of protection.
Terminal Strip connectors on Power Module.
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ElectraulicElectraulic ConstructionConstructionElectraulicElectraulic ConstructionConstructionElectrical
Sub-Assembly
Mechanical
Sub-Assembly
Power
Feedback
Cylinder
Moduleo or
Control Enclosure
Feedback SignalPower Supply
Motor Power
Electrical Sub Assembly can be mounted up
to 700 feet away from Mechanical SA
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L SeriesL Series -- Linear ActuatorsLinear ActuatorsL SeriesL Series -- Linear ActuatorsLinear Actuators
Cylinder bore determines thrust
Thrusts from 2000 200 000 lbs force and strokesfrom .75 up to 108
Small sizes use REXA block cylinders
,
Larger bores & longer strokes use Commercial tie-rodcylinders
Double rod construction allows for constantcylinder volume
sense position
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R SeriesR Series -- Rotary ActuatorsRotary ActuatorsR SeriesR Series -- Rotary ActuatorsRotary Actuators
Cylinder bore & quantity determines torque
Dual opposed cylinders allow for constant
c linder volume
Feedback is connected directly to the actuator.
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Why are EH actuators common on OilWhy are EH actuators common on OilPipeline Pressure Control Applications?Pipeline Pressure Control Applications?Why are EH actuators common on OilWhy are EH actuators common on OilPipeline Pressure Control Applications?Pipeline Pressure Control Applications?
Thrust/Torque is too high for most pneumatics
Repeatability, Frequency Response, Resolution requirements to
catch/maintain pressure fluctuations exceed pneumatic actuatorcapabilities
High cost and power requirements of compressor systems
100% modulating duty cycle requirement exceeds the capabilitiesof Electric ear actuators
No fail-safe options with Electric gear actuators
Electro-hydraulic actuators do not have these limitations
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ElectroElectro--Hydraulic ActuatorsHydraulic ActuatorsElectroElectro--Hydraulic ActuatorsHydraulic Actuators
Are very fast acting.
They offer very precise positioning.
service.
.
They offer very high frequency response
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Why Use REXA Actuators?Why Use REXA Actuators?Why Use REXA Actuators?Why Use REXA Actuators?
Low power consumption
Self-contained hydraulics
Standard of the industry
Reliability
Speed of response
No scheduled maintenance Ease of Repair
Repeatabil ity of Performance
u y cyc e
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Pressure Control ApplicationsPressure Control ApplicationsPressure Control ApplicationsPressure Control Applications
Responsive line pressure control is essential for
pressure excursions
ex y n p pe ne opera ons requ res requenchanges in flow rates and delivery sites
pec c va ve an ac ua or es gn s eng neereto meet requirements for specific application in
Pi li & E i i Fi i Fi hPi li & E i i Fi i Fi hPi li & E i i Fi i Fi hPi li & E i i Fi i Fi h
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Pipeline & Engineering Firms using FisherPipeline & Engineering Firms using FisherV260s and REXA ActuatorsV260s and REXA ActuatorsPipeline & Engineering Firms using FisherPipeline & Engineering Firms using FisherV260s and REXA ActuatorsV260s and REXA Actuators
PLANTATION PIPE LINE CO
KINDER MORGAN
ENDBRIDGE
COLORADO INTERSTATE GAS
NORTHERN BORDER PIPELINE
CHEVRON INC
BP
FLUOR DANIEL INC.
FLORIDA GAS TRANSMISSION
EXXON MOBILE
WILLIAMS GAS PIPELINE
SOUTHERN STAR CENTRAL GAS
CONOCOPHILLIPS COMPANY
BLACK & VEATCH INC
MICHIGAN CONSOLIDATED GAS CO.
PETROBRAS
BECHTEL CORPORATION
ANR PIPELINECO
PACIFIC PIPELINE SYSTEMS
CONOCO INC
NORTHERN BORDER PIPELINE
ENTERPRISE FIELD SERVICES LLC
ARCO ALASKA INC
BEAUMONT PLANT
BROWN & ROOT-CONDOR S.P.A.
ATHABASCA OIL SANDS
PVDSA
IRVING OIL LIMITED
KIEWIT INDUSTRIAL
TRIGON CONSULTANTS