Presentation on theme: "What is Fluid Power? Fluid power is energy transmitted and controlled by means of a pressurized fluid, either liquid or gas. The term fluid power applies."— Presentation transcript:
What is Fluid Power? Fluid power is energy transmitted and controlled by means of a pressurized fluid, either liquid or gas. The term fluid power applies to both hydraulics and pneumatics. Hydraulics uses pressurized liquid, for example, oil or water; Pneumatics uses compressed air or other neutral gases. Fluid power can be effectively combined with other technologies through the use of sensors, transducers and microprocessors. From: http://www.nfpa.com/OurIndustry/OurInd_AboutFP_WhatIsFluidPower.asphttp://www.nfpa.com/OurIndustry/OurInd_AboutFP_WhatIsFluidPower.asp
How does Fluid Power Work? Pascal's Law expresses the central concept of fluid power: "Pressure exerted by a confined fluid acts undiminished equally in all directions."
An Example An input force of 10 pounds (44.8 Nm) on a 1-square- inch (6.45 cm 2 ) piston develops a pressure of 10 pounds per square inch (psi) (68.95 kN/m2 or 68.95 KPa) throughout the container. This pressure will allow a 10-square-inch piston to support a 100-pound (444.8 Nm) weight. The forces are proportional to the piston areas.
The Advantages Multiplication and variation of force Easy, accurate control Multi-function control High horsepower, low weight Low speed torque Constant force or torque Safety in hazardous environments Established standards and engineering
Fluid Power Applications Mobile –Backhoes –Graders –Tractors –Truck brakes –Suspensions –Spreaders –Highway maintenance vehicles
Fluid Power System Hydraulic pump or air compressor Cylinder or motor Valves Filters, regulators and lubricators Manifolds, hose, tube, fittings, couplings, etc., Sealing devices Accumulators and reservoirs Instruments, such as pressure switches, gauges, flow meters, sensors and transducers A typical fluid power system includes the following components: