Prepared by: Denise Welte Dept. of Electrical and Computer Engineering Utah State University

1. ECE5320 MechatronicsAssignment#01: Literature Survey on Sensors and Actuators Topic: Control Valves Prepared by: Denise Welte Dept. of Electrical and Computer Engineering Utah State University E: denise.welte@aggiemail.usu.edu ; T: (801)390-4899; F: (435)797-3054 (ECE Dept.) 3/11/2010

2. Outline • Reference list • To probe further • Major applications • Basic working principle illustrated • Types of Control Valves • Sample Configuration • Major specifications • Limitations • Flow Characteristics • Valve Selection Process ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

3. Outline (continued) • Costs • Where to Buy • Material • Medium • Images • Conclusion ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

4. Reference list • http://www.documentation.emersonprocess.com/groups/public/documents/book/cvh99.pdf • http://www.engineeringtoolbox.com/control-valves-flow-characteristics-d_485.html • http://en.wikipedia.org/wiki/Control_valves • http://flow-control.globalspec.com/Specifications/Flow_Control_Flow_Transfer/Valves/Flow_Control_Valves ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

5. References (continued) • http://www.plant-maintenance.com/maintenance_articles_valves.shtml • http://www.controlvalves.com/ ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

6. To explore further (survival pointers of web references etc) • http://www.documentation.emersonprocess.com/groups/public/documents/book/cvh99.pdf • http://www.iceweb.com.au/Valve/control_valves.htm • http://www.valvemagazine.com/ ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

7. Major applications • Used in control systems to regulate flow of gases, liquids, fluidized solids, and slurries by opening and closing passageways. • In industry majority are used with oil and gas, power generation, mining, water control, sewage, and chemical manufacturing ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

8. Basic Working Principle • Control valve manipulates a flowing fluid, such as gas, steam, water, or chemical compounds, to compensate for the load disturbance and keep the regulated process variable as close as possible to the desired set point (Control Valve Handbook). http://www.isa.org/Template.cfm?Section=Communities&template=/TaggedPage/DetailDisplay.cfm&ContentID=43794 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

9. Types of Control Valves • Electric valve • Globe valve • Air powered valve • Angle seat piston valve • Rotary valves • Sliding cylinder valve • Solenoid valve Globe Valve http://en.wikipedia.org/wiki/Control_valves ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

10. Sample Configuration • Use of control valve to control lubricant/coolant going to milling machines at a manufacturing plant • The valve opens when the machine requests some coolant to start milling • The coolant/lubricant will be held in holding tanks when it isn’t used • Makes milling more efficient and reduces the amount of wear on milling tools ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

11. Major Specifications • Valve size • Pressure Rating • Number of Ports/Ways • Connection • Media Temperature • Flow (Cv) http://image.absoluteastronomy.com/images/encyclopediaimages/p/pl/pl_control_valve.gif ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

12. Limitations • Valves are limited on the following factors: • Flow rate • Number of Ports/Ways • Connection • Material • Maximum temperature allowed • Pressure rating ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

13. Flow Characteristics • Trim design of valve effects how the control valve capacity changes as the valve moves through its complete travel • Control valve flow characteristics shows how the linearity changes http://www.engineeringtoolbox.com/control-valves-flow-characteristics-d_485.html ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

14. Valve Selection Process http://www.documentation.emersonprocess.com/groups/public/documents/book/cvh99.pdf ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

15. Costs • Costs vary depending on what type of valve you are using. • Sprinkler control valve ~$12 • Electric valve actuator ~$80 • Pneumatic valve actuator ~$52-$400 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

16. Where to Buy • http://www.rotork.com/ • http://www.eprinc.net/catalog.asp?prodid=528660&showprevnext=1 • http://www.energysavingcontrols.com/Johnson-Controls-VA-7452-90011-Electric-Valve-Actuator-P173.aspx • http://www.tycoflowcontrol.com/ • http://www.tycovalves.com/ ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

17. Material • Acetal • Aluminum • Brass/Bronze • Cast Iron • Copper • CPVC • Ductile Iron • Exotic Metal • Nylon – Polyamide • PEEK • Polyethylene (PE) • Polypropylene (PP) • PTFE – Teflon • PVC • PVDF • Stainless Steel • Steel ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

18. Medium • Air • Compressed Air • Water • Ground Water • Potable Water • Salt Water • Wastewater • Gas • Gasoline/Diesel Fuel • High Purity Gas • LP – Gas • Natural Gas • Sour Gas • Specialty /Corrosive Gasses • Hydraulic Fluid • Powder/Solids • Steam • Other ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

19. Images http://www.experitec.com/images/fisherprodsimage.jpg ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators

20. Conclusion • Control valves are essential for controlling multiple medias in industry. • Help save a lot of money by only providing different medias when they are needed, instead of constantly. • Are simple to understand and to implement. ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators