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Assignment#01: Literature Survey on Sensors and Actuators ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Hydraulic.

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Presentation on theme: "Assignment#01: Literature Survey on Sensors and Actuators ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Hydraulic."— Presentation transcript:

1 Assignment#01: Literature Survey on Sensors and Actuators ECE5320 Mechatronics Assignment#01: Literature Survey on Sensors and Actuators Topic: Hydraulic Pump: Positive Displacement -Actuator Prepared by: Logan Weston Dept. of Electrical and Computer Engineering Utah State University E:ice.fisher22@yahoo.com; F: (435)797-3054 (ECE Dept.) 3/11/2010

2 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-2 Outline –Reference list –To probe further –Major applications –Basic working principle illustrated –A typical sample configuration in application (application notes) –Major specifications –Limitations –And many more relevant issues in applications (such as, how to choose, cost information, where to buy etc.)

3 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-3 Reference list Pumpschool.com –http://www.pumpschool.com/index.htmhttp://www.pumpschool.com/index.htm Hydraulics and Pneumatics: Serving Fluid Power and Motion Control Engineers Worldwide. –http://hydraulicspneumatics.com/200/FPE/IndexPage. aspxhttp://hydraulicspneumatics.com/200/FPE/IndexPage. aspx Hydraulic Supermarket.com –http://www.hydraulicsupermarket.com/technical9.htm lhttp://www.hydraulicsupermarket.com/technical9.htm l

4 Reference List Cont. Wikipedia References –Gear pump http://en.wikipedia.org/wiki/Gear_pump –Hydraulic motor http://en.wikipedia.org/wiki/Hydraulic_motor –Hydraulic pump http://en.wikipedia.org/wiki/Hydraulic_pump –Lobe pump http://en.wikipedia.org/wiki/Lobe_pump 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-4

5 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-5 To explore further (survival pointers of web references etc) Grainger –http://www.grainger.com/Grainger/hydraulic-gear- pumps/pumps/hydraulics/ecatalog/N-9db?op=searchhttp://www.grainger.com/Grainger/hydraulic-gear- pumps/pumps/hydraulics/ecatalog/N-9db?op=search Parker –http://www.parker.com/portal/site/PARKER/menuitem.75b3c0 354ff8851afa93ebde76108a0c/?vgnextoid=0fe3d1bea018f010 VgnVCM10000032a71dacRCRDhttp://www.parker.com/portal/site/PARKER/menuitem.75b3c0 354ff8851afa93ebde76108a0c/?vgnextoid=0fe3d1bea018f010 VgnVCM10000032a71dacRCRD

6 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-6 Major applications Move liquefied food products –IE: put the food under pressure for canning purposes Move light and heavy oil products –These oil products can be transported in pipes to a storage facility. The needed pressure comes from an electric motor turning a hydraulic pump. Transfer force from on area to another –Have the transferred force by amplified or de- amplified depending on the force need requirements.

7 Basic Working Principles Difference between Hydraulic Pump and a Hydraulic Motor: –Motor: Converts pressure to rotary torque and rotational speed. –Pump: Converts an input of rotary torque and speed into pressure. –Motor and Pump are inverses of each other, but they can not be interchanged. Each has a specific job, and it does that job well. If they were interchanged, damage to the hydraulic system would occur. 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-7

8 Basic Working Principe Cont. Classification of pumps : –Non-Positive-Displacement Pump (NPD): “produces a continuous flow, but it does not have an internal seal” http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps –“Output varies considerably as pressure varies. If the output port of a non-positive-displacement pump were blocked off, the pressure would rise, and output would decrease to zero. Although the pumping element would continue moving, flow would stop.” http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-8

9 Basic Working Principle Cont. Classification of Pumps: –Positive-Displacement Pump (PD): “Slippage is negligible compared to the pump's volumetric output flow. If the output port were plugged, pressure would increase instantaneously to the point that the pump's pumping element or its case would fail (probably explode, if the drive shaft did not break first), or the pump's prime mover would stall.” http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps –PD pumps deliver the same amount of fluid every cycle 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-9

10 Types of PD Pumps and their Function Two Main Types: Reciprocating and Gear Reciprocating pumps- –These pumps use a piston and valve system to move the fluid. They create a vacuum when the piston is pulled back, thus drawing in liquid. When the piston starts to move forward it creates a pressure in side the piston chamber, closing the inlet valve, opening the outlet valve. The liquid then exits the chamber and the process starts a gain. 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-10

11 Types of PD Pumps and their Function 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-11 Examples of PD Pumps Reciprocating PumpSpur GearLobe Gear http://hydraulicspneumatics.com/200/FPE/Pumps/Article/True/6401/Pumps

12 Types of PD Pumps and their Function Gear Pumps: –Spur/External: These pumps have two gears inside the housing that rotate in opposite directions and move the fluid around the inside of the case. There is not any fluid that flows between to the two gears. One gear is powered, and it turns the other gear. When the gears mess together, they force the fluid out the output side of the pump. When they open back up a small vacuum is formed which draws fluid into the pump. 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-12 http://en.wikipedia.org/wiki/File:Gear_pump.png http://www.pumpschool.com/principles/eg_ani.htm

13 Types of PD Pumps and their Function Gear Pumps: –Internal: These probably are the most versatile pump that is made. They can pump both thin and think liquids if you consider asphalt a liquid. They can be used in both directions, meaning that they can load and unload the cargo. 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-13 http://www.pumpschool.com /images/genpur.gif http://www.pumpschool.com /principles/ig_ani.htm http://hydraulicspneumatics.com /FPE/images/pumps1_4.gif

14 Types of PD Pumps and their Function Lobe Pump –Use two driven gears to move the fluid. –This is the best PD Pump to pump fluid that has food particles in it like peanut butter. They are able to handle food particles because they have a larger space between the gear teeth and the pump housing. 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-14 http://www.pumpschool.com/principles/lobe_ani.htm http://upload.wikimedia.org/wikipe dia/commons/e/e4/Boerger- Drehkolbenpume-THW.jpg

15 Types of PD Pumps and their Function Gear Pump: –Vane Pump: These pumps have only one internal gear with vanes that scrape along the pump housing causing the pumping action. The rotor can be centered or offset. The vanes are spring loaded to provide a constant seal against the housing. In the offset gear type, the vanes expand and contract as the rotor turns, thus forcing the liquid out, and pulling the new liquid in. 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-15

16 Types of PD Pumps and their Function Gear Pumps –Vane Pumps: Pictures 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-16 http://www.pumpschool.com/images/vnsteps.gif http://www.pumpschool.com/images/vanePum pLarge4.gif

17 Advantages Gear – Internal Only two moving parts Only one stuffing box Non-pulsating discharge Excellent for high-viscosity liquids Constant and even discharge regardless of pressure conditions Operates well in either direction Can be made to operate with one direction of flow with either rotation Low NPSH required Single adjustable end clearance Easy to maintain Flexible design offers application customization http://www.pumpschool.com/principles/internal.htm Gear - External High speed High pressure No overhung bearing loads Relatively quiet operation Design accommodates wide variety of materials http://www.pumpschool.com/principles/external.htm 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-17

18 Advantages Gear – Lobe Pass medium solids No metal-to-metal contact Superior CIP/SIP capabilities Long term dry run (with lubrication to seals) Non-pulsating discharge http://www.pumpschool.com/principles/lobe.htm Gear- Vane Handles thin liquids at relatively higher pressures Compensates for wear through vane extension Sometimes preferred for solvents, LPG Can run dry for short periods Can have one seal or stuffing box Develops good vacuum http://www.pumpschool.com/principles/vane.htm 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-18

19 Application External Various fuel oils and lube oils Chemical additive and polymer metering Chemical mixing and blending (double pump) Industrial and mobile hydraulic applications (log splitters, lifts, etc.) Acids and caustic (stainless steel or composite construction) Low volume transfer or application http://www.pumpschool.com/principles/external.htm Internal All varieties of fuel oil and lube oil Resins and Polymers Alcohols and solvents Asphalt, Bitumen, and Tar Polyurethane foam (Isocyanate and polyol) Food products such as corn syrup, chocolate, and peanut butter Paint, inks, and pigments Soaps and surfactants Glycol http://www.pumpschool.com/principles/internal.htm 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-19

20 Application Lobe Polymers Paper coatings Soaps and surfactants Paints and dyes Rubber and adhesives Pharmaceuticals Food applications (a sample of these is referenced below) http://www.pumpschool.com/principles/lobe.htm Vane Aerosol and Propellants Aviation Service - Fuel Transfer, Deicing Auto Industry - Fuels, Lubes, Refrigeration Coolants Bulk Transfer of LPG and NH 3 LPG Cylinder Filling Alcohols Refrigeration - Freons, Ammonia Solvents Aqueous solutions http://www.pumpschool.com/principles/vane.htm 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-20

21 Application Lobe Cont.- Food and cosmetic products capable of being pumped by lobe rotor pumps. From Dickenson, T. C. 1995. Pumping Manual, 9th Ed. Elsevier Advanced Technology: Kidlington, Oxford, U.K. Alcohol Apple purée Apricots Baby food Batter Beans Beer Beetroot Biscuit Cream Blackcurrants Brine 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-21 Broth Butter fat Caramel Castor Oil Cat food Cheese curd Cheese whey Cherries Chicken paste Chili con carne Chocolate Chutney Cockles Coconut oil Cod oil Coffee liquor Cordials Corn oil Corn syrup Cottage cheese Cotton seed oil Cranberry juice Cream Cream cheese Custard Dog food Dough Eggs - whole Egg yolk Essences Evaporated milk Fish Flavorings Fondants Fruit juice Fruit pulp Fruit - whole Fruit yogurt Gelatin Gherkins Glucose http://www.pumpschool.com/principles /lobe.htm

22 Limitation Internal Usually requires moderate speeds Medium pressure limitations One bearing runs in the product pumped Overhung load on shaft bearing External Four bushings in liquid area No solids allowed Fixed End Clearances 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-22

23 Limitations Lobe Requires timing gears Requires two seals Reduced lift with thin liquids Vane Can have two stuffing boxes Complex housing and many parts Not suitable for high pressures Not suitable for high viscosity Not good with abrasives 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-23

24 Where to Buy/Price Grainger –$150 + Hydraulic Supermarket.com –Email for Quote Viking Pump Inc. –Contact for Quote Wright Pump Corp. –Contact Manufacture for Quote 4/30/2015 ECE5320 Mechatronics. Assignment#1 Survey on sensors and actuators Slide-24


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