1. START 2. POSITIONAL CONTROL SYSTEMS www.paladonsystems.com 3. INTRODUCTION Copyright 2013 Paladon Systems Ltd. All Rights Reserved. Paladon Systems Electro-Hydraulic Positional Control Systems are suitable for the accurate positioning of valves; either for continual modulation or stepping functions. The systems hydraulic supply pressure is normally provided from an existing ring main system, or alternatively, self- contained systems can be provided with their own motorised pump units. Control can be achieved by either pulsing the solenoid valves directly from a suitable D.C.S. or by means of an integral positioner operating from a 4-20 mA command signal. www.paladonsystems.com 4. APPLICATIONS Copyright 2013 Paladon Systems Ltd. All Rights Reserved. Linear actuator operation of: Choke valves Control valves Globe valves Semi-rotary actuator operation of: Butterfly valves Ball valves www.paladonsystems.com 5. FEATURES & BENEFITS Copyright 2013 Paladon Systems Ltd. All Rights Reserved. Hydraulic Control System Compact design Direct acting solenoid valve for accuracy and fast response Stay-Put, Open and Close failure modes available 316SS manifold construction to eliminate piping and increase system reliability Fully adjustable open & close speed control valves 90 to 210 Barg hydraulic supply from ring main or self-contained system Zero leakage Rugged design suitable for offshore and tropical environments -20C to +55C ambient operating temperature Suitable for operation mineral oil or HWB fluid System cleanliness to NAS 1683 Class 6 www.paladonsystems.com 6. RINGMAIN - SYSTEM OVERVIEW Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com Electronic Positioner 4 - 20mA Command 4 - 20mA Retransmission EExd EExia EExme Communication Infrared HART Foundation Fieldbus Loop Powered Actuator Linear Quarter-Turn Double-Acting Spring-Return Valve Choke Control Feedback Device EExd Transducer EExia Transducer Potentiometer Hydraulic Controls Speed Control Pressure Filter EExd Solenoid Valves EExia Solenoid Valves EExme Solenoid Valves Manual Override ESD Handpump 7. SR OPEN & CLOSED CONTROL Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com PI 0pen Closed 25% 50% 75% Click Slide to show the Open SOV and Close SOV being de-energised, and the actuator moving the mainline valve to the fully closed position Close SOV Open SOV Click Slide to show the Open SOV and Close SOV being energised, and the actuator moving the mainline valve to the fully open position Power Supply 4-20mA Input 4-20mA Re-Trans 8. DA OPEN & CLOSED CONTROL Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com PI Open SOV Close SOV Feedback Device Thermal Relief Valve Click Slide to show the Close SOV being opened and closed, thereby stepping the mainline valve to the 25%, 50%, 75% and fully closed positions Click Slide to show the Open SOV being opened, and the actuator moving the mainline valve to the fully open position Positioner Power Supply 0pen Closed 25% 50% 75% 4-20mA Input 4-20mA Re-Trans 9. PI 0pen Closed 25% 50% 75% Click Slide to show the effect of ambient temperature on closed hydraulic systems Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com THERMAL EXPANSION 10. THERMAL EXPANSION PROTECTION Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com PI 0pen Closed 25% 50% 75% Click Slide to see how the thermal relief valve protects the actuator from over-pressurisation 11. SELF CONTAINED SYSTEMS Paladon Systems Self-Contained Electro-Hydraulic (SCEH) systems require only a low power electrical supply in order to hydraulically actuate nearly all sizes and types of valves. These systems offer Operators significant operational benefits when compared to most traditional valve automation technologies and are increasingly becoming the solution of choice for many applications across the world. Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 12. FEATURES & BENEFITS Low Cost Installation No requirement for tubing runs from the control system to the actuator eliminate the requirement for piping, pipe runs, stanchions, uni-strut and underground grating etc. No concrete bases are required as actuator and integrated control system mount directly to the valve No requirement for hazardous area calculations for gas leakage No PED checks due to hydraulic operating medium and the size of the cylinders (P.S.S.R.) Lightweight and compact design reduces infrastructure needed during installation and maintenance activities Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 13. FEATURES & BENEFITS Reduced environmental impact and carbon footprint Zero Emissions Unlike Gas/Hydraulic (Gas-over-Oil) and Direct-Gas systems, SCEH systems do not vent any natural gas during valve operation No vent tubes and caps are required which can dislodge during gas venting allowing rain water to directly enter the system No concrete bases required which generate the highest carbon footprint of a typical installation Low standard operating power requirement of 24VDC 100W and even lower power requirements for certain systems Zero power consumption in static position Suitable for operation using integral solar panels and rechargeable battery sub-systems resulting in a zero carbon footprint during operation Suitable for operation using biodegradable fluid (Shell Naturelle HF- E) resulting in zero pollution in the event of a spillage and negligible fluid disposal costs Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 14. FEATURES & BENEFITS Fail-Safe Capability Unlike electric actuators which fail- last on loss of power, SCEH systems can include spring-return hydraulic actuators to ensure a fail-safe position Utilizing hydraulic accumulators, SCEH systems can provide a fail- safe capability even when used with double-acting hydraulic actuators Back-Up Valve Stroking Using hydraulic accumulators, SCEH systems sufficient hydraulic pressure to provide numerous back-up valve strokes on loss of the electrical power source Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 15. SELF CONTAINED - SYSTEM OVERVIEW Below is a typical SCEH system using a hydraulic spring-return scotch-yoke actuator. Hydraulic Spring-Return Valve Actuator Accumulators Hydraulic Reservoir Electro-Hydraulic Control System Electric Pump Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 16. SYSTEM OPERATION Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com This system has just been installed and is currently depressurised. Click to operate the electric motor/pump set to pressurise and fill the accumulator. M The accumulator is now pressurised and filled to the high level setpoint resulting in a signal being sent to stop the motor/pump set. Click to energize the solenoid valve to open the mainline valve. The mainline valve is now fully open. Click to de-energise the solenoid valve and move the mainline valve to its fully closed position. The mainline valve is now fully closed. In this system the accumulator has been sized to allow for 2 valve strokes before having to be refilled. Click to engergise the solenoid valve to open the mainline valve for the second time. Low level setpoint High level setpoint 17. SYSTEM OPERATION Copyright 2014 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com M Low level setpoint High level setpoint The mainline valve is now fully closed. In this system the accumulator has been sized to allow for 2 valve strokes before having to be refilled. Click to engergise the solenoid valve to open the mainline valve for the second time. The accumulator is now refilled and the motor/pump set automatically stopped. This concludes the animation. Click to continue. The mainline valve is now fully open for the second time and the fluid level in the accumulator has fallen to its low level setpoint. Click to see the motor/pump set being automatically started to refill the accumulator. 18. PARTIAL STROKING Copyright 2013 Paladon Systems Ltd. All Rights Reserved. Partial valve stroke testing is the process in which mainline valves are partially closed to check that the valve, actuator and controls system will be able to fully close the mainline valve when needed during a critical situation. Partial valve stroking testing allows operators to check the reliability of their valve systems without having to fully close mainline valves and stop production. When undertaken using smart positioners, sensors and diagnostic tools, partial valve stroking can help operators identify valve system problems long before they can affect production or jeopardise personnel safety or the environment. www.paladonsystems.com 19. CONTROL COMPONENTS Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 0pen Closed 25% 50% 75% PST Controller Partial Stroke SOV ESD SOV DCS SOV DCS Solenoid Valve ESD Solenoid Valve Partial Stroke Solenoid Valve Pilot Valve Exhaust Valve 20. VALVE OPENING Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com 0pen Closed 25% 50% 75% PST Controller Click to show the supply line becoming pressurised Click to energize the DCS & ESD solenoid valves & move them to their open positions Partial Stroke SOV ESD SOV DCS SOV ESD SOV DCS SOV PST Controller With the pilot valve in its open position, hydraulic fluid can now pressurize the actuators hydraulic cylinder. Click to show the actuators hydraulic cylinder being pressurized and the actuator moving the mainline valve to its fully open position With the DCS & ESD solenoid valves in their open positions, click to show pilot signals being applied to the pilot & exhaust valves. The pilot valve will move to its open position, and the exhaust valve will move to its closed position The mainline valve is now in its fully open position 21. PARTIAL VALVE STROKING Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com Partial Stroke SOV ESD SOV DCS SOV PST ControllerPST Controller 0pen Closed 25% 50% 75% Partial Stroke SOV Click to energize the partial stroke solenoid & move it to its open position The mainline valve has now moved to the desired 50% partial stroke position. When the desired mainline valve position has been reached, the PST Controller will de-energise the partial stroke solenoid valve & move it to its closed position. In its closed position, the partial stroke solenoid valve can apply a pilot signal to the pilot valve and move it to its open position. With the pilot valve in its open position, the actuators hydraulic cylinder becomes repressurized, and moves the mainline valve back to its full open position. Click to the show the above With the partial stroke solenoid valve now in the open position, the pilot signal to the pilot valve is removed. Click to show the partial stroke solenoid valve venting back to the reservoir, and the pilot valve moving to its closed position With the pilot valve now in its closed position, hydraulic fluid from the actuators hydraulic cylinder is able to now vent back to reservoir through the pilot valve & speed control valve. The speed of actuator closing is controlled using the speed control valve. Click to show the hydraulic fluid from the actuators hydraulic cylinder being vented back to the reservoir The degree/percentage of mainline valve closure is measured by the transducer, and the actual position set by the PST Controller. In this example, the TVC is using a 420mA signal to position the valve. If we apply a signal of 12mA, we can partially stroke the mainline valve 50% closed. Click to show the mainline valve moving 50% closed 22. PARTIAL VALVE STROKING Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com Partial Stroke SOV ESD SOV DCS SOV PST ControllerPST Controller 0pen Closed 25% 50% 75% Partial Stroke SOV The mainline valve has now moved back its fully open position The mainline valve has now moved to the desired 50% partial stroke position. When the desired mainline valve position has been reached, the TVC positioner will de-energise the partial stroke solenoid valve & move it to its closed position. In its closed position, the partial stroke solenoid valve can apply a pilot signal to the pilot valve and move it to its open position. With the pilot valve in its open position, the actuators hydraulic cylinder becomes repressurized, and moves the mainline valve back to its full open position. Click to the show the above 23. VALVE CLOSING - DCS Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com ESD SOV 0pen Closed 25% 50% 75% PST Controller Partial Stroke SOV DCS SOVDCS SOV PST Controller The mainline valve is now in its fully closed position. Click to continue to show how the mainline valve is closed during an emergency using the ESD solenoid valve Click to de-energize the DCS solenoid valve & move it to its closed position Click to show the hydraulic fluid from the actuator now venting back to the reservoir through the pilot valve and speed control valve, and also back to the reservoir through the exhaust valve. With the actuators hydraulic cylinder now depressurized, the actuators spring will move the mainline valve to its fully closed position With the DCS solenoid valve now in its open position and venting hydraulic fluid back to the reservoir, the pilot signals to the pilot & exhaust valves are removed. Click to show the DCS solenoid valve venting to reservoir, the pilot valve moving to its closed position, and the exhaust valve to its open position 24. VALVE CLOSING - ESD Copyright 2013 Paladon Systems Ltd. All Rights Reserved. www.paladonsystems.com DCS SOV ESD SOVESD SOV 0pen Closed 25% 50% 75% PST Controller Partial Stroke SOV PST Controller Click to de-energize the ESD solenoid valve & move it to its closed position With the ESD solenoid valve now in its open position and venting hydraulic fluid back to the reservoir, the pilot signals to the pilot & exhaust valves are removed. Click to show the ESD solenoid valve venting to reservoir, the pilot valve moving to its closed position, and the exhaust valve to its open position The mainline valve is now in its fully closed position Click to show the hydraulic fluid from the actuator now venting back to the reservoir through the pilot valve and speed control valve, and also back to the reservoir through the exhaust valve. With the actuators hydraulic cylinder now depressurized, the actuators spring will move the mainline valve to its fully closed position 25. POSITIONER - FEATURES & BENEFITS Copyright 2013 Paladon Systems Ltd. All Rights Reserved. Positioner Zone 1 / 2 Infrared communication interface using an Exia keypad Large graphics LCD with comprehensive status and data display Three way galvanic isolation command in, actual position out and power supply Selectable sinking or sourcing actual position 4-20mA output Local / remote configuration enable input and open drain status output Selectable solenoid drive sense for failsafe operation Selectable default operation on command signal/feedback signal break ESD solenoid output - 24VDC open drain Fault output - 24VDC open drain Hydraulic pump drive controlled by demand or external pressure sensors External fault contact monitoring Selectable interlock between ESD and fault outputs Stepping mode with adjustable ON and OFF times Low power - normal operation less than 2W plus solenoids Direct mounting within Compact Exd Enclosure System www.paladonsystems.com 26. In summary, we provide a comprehensive suite of valve automation solutions, including: Pneumatic & hydraulic quarter-turn & linear actuators Self-contained electro-hydraulic control systems Positional control systems Gas-over-oil and direct gas pipeline systems Turnkey HIPPS packages Hydraulic power units Turbine bypass systems Subsea packages Bespoke control systems Visit www.paladonsystems.com to find out more. END OF PRESENTATION www.paladonsystems.com