Hydraulics and Pneumatics[302045]

Presented by

Prof. Jadhav M. V.

Hydraulics and Pneumatics[302045]

Chapter No.

In SemExam

End SemExam

Total

1 10 6 16

2 10 8 18

3 10 6 16

4 NA 16 16

5 NA 18 18

6 NA 16 16

Total 30 70 100

COURSE OBJECTIVES

1. Application of fluid mechanics and governing laws

2.Study and selection of pumps and motors forautomation systems

3. Study of actuators

4. Learning of hydraulic and pneumatic circuits used inindustry

5. Use of control valves, Servo and Electro hydraulicvalves

6. Hydraulic and pneumatic circuits design and control

COURSE OUTCOMES

1. Working principle of various components used forhydraulic & pneumatic systems.

2. Identify various components of hydraulic & pneumaticsystems.

3. Ability to select appropriate components required forhydraulic and pneumatic systems.

4. Ability to design hydraulic and pneumatic system forindustrial applications.

5. Ability to understand industrial applications ofhydraulic and pneumatic system.

6. Troubleshooting of hydraulic & pneumatic circuits.

Unit wise Guideline for Theory Syllabus

Unit – I Introduction to Hydraulics and Pneumatics (16M, 08 hrs)

• Introduction to oil hydraulics and pneumatics

• Structure hydraulics and pneumatics system

• Advantages and limitations

• Properties of fluids

• Fluids for hydraulic systems

• Governing laws

• Distribution of fluid power

• ISO Symbols

• Energy losses in hydraulic systems

Chapter 1: Introduction to hydraulics and Pneumatics

• No Numerical

• ISO Symbol related question ask in end sem only

• In sem 10 M & End sem 6 M

Unit – II Pumps (18M, 08 hrs) • Types, classification, principle of working and constructional

details of vane pumps, gear pumps, radial and axial plungerpumps, screw pumps

• Power and efficiency calculations, characteristics curves,selection of pumps for hydraulic Power transmission

• Power units and accessories: Types of power units, reservoirassembly, constructional details, pressure switches,temperature switches

• Reservoir, Filter, Seals

• Accumulators: Types, selection, Design procedure,applications of accumulators (Numerical on Sizing ofAccumulator).

• Types of Intensifiers (with circuit diagram)

• Pressure switches/sensors, Temperature switches/sensors,Level sensors

Chapter 2: Pump, Power unit, Accumulator andAccessories

• In sem 5 M theory & 5 M problem

• End Sem exam 8 M

Unit – III Hydraulic Actuators (16M, 08 hrs)

• Linear and Rotary Actuators.

• Hydraulic motors - Types- Vane, Gear, Piston types,radial piston.

• Methods of control of acceleration, deceleration.

• Types of cylinders and mountings.

• Calculation of piston velocity, thrust under staticand dynamic applications, considering friction,inertia loads.

• Design considerations for cylinders.

• Cushioning of cylinders. (Numerical treatment).

Chapter 3: Hydraulic Actuator

• In sem 5 M theory & 5 M problem

• End Sem exam 6 M

Unit – IV Industrial Circuits (16M, 08 hrs)• Simple reciprocating Circuit• Regenerative Circuit• Speed control Circuit (Meter in, Meter out and bleed off)• Sequencing Circuit• Synchronization Circuit• Transverse and feed Circuit• Circuit for riveting machine• Automatic reciprocating Circuit• Fail safe circuit• Counter balance circuit• Actuator locking Circuit• Circuit for hydraulic press• Unloading circuit (Numerical treatment)• Motor breaking circuit

Chapter 4: Industrial Hydraulic Circuit

• Refer Fluid power with application by AnthonyEsposito 7th edition, Pg No. 314 to 338

• End Sem exam 16 M (Theory + NumericalProblems)

• Question on Valve 6 M only meaning andpurpose

• Hydraulic Circuit (Design or Numerical 10 M)

• Numerical treatment on Simple reciprocating,Regenerative and Speed control circuit

Unit –V Pneumatics (18M, 08 hrs)• Principle of Pneumatics: Laws of compression, types of compressors,

selection of compressors.• Comparison of Pneumatics with Hydraulic power transmissions.• Types of filters, regulators, lubricators, mufflers, dryers• Pressure regulating valves,• Direction control valves, two way, three way, four way valves. Solenoid

operated valves, push button, lever control valves.• Speed regulating - Methods used in Pneumatics• Pneumatic actuators-rotary, reciprocating• Air motors- radial piston, vane, axial piston• Basic pneumatic circuit, selection of components,• Application of pneumatics in low cost automation and in industrial

automation• Introduction to vacuum and vacuum measurement, Vacuum pumps,

types, introduction to vacuum sensors and valves. Industrial applicationof vacuum.

Chapter 5: Pneumatics

• End Sem exam 18 M (Theory only)

Unit –VI System Design (16M, 08 hrs)

• Design of hydraulic circuit for practical application

• Design of Pneumatic circuit for practical application

• Selection of different components such as reservoir, various valves, actuators, filters, pumps based on design.

• Manufacturers catalogues

Chapter 6: System Design

• End Sem exam 18 M (Based on analysis anddesign of system)

Reference Books & Website

Reference Books:

• Oil Hydraulic System by S R Mujumdar

• Pneumatic System by S R Mujumdar

• Fluid Power & Application by Anthony Esposito

Website:

www.festo.com

www.eaton.com

www.polyhedron.com

List of Practicals1. Test on Gear/Vane/Piston pump and plotting of performance characteristics2. Following experiments to be done on hydraulic trainer:

a. Regenerative circuitb. Speed control circuitc. Sequencing circuitd. Transverse and feed circuit

3. Following experiments to be done on pneumatic trainer:a. Automatic reciprocating circuitb. Speed control circuitc. Pneumatic circuit involving shuttle valve/ quick exhaust valved. Electro pneumatic valves and circuit

4. Test on pressure relief valve5. Design of accumulators and intensifiers in hydraulic system6. Design of simple hydraulic systems used in practice such as copy turning

attachment, hydraulic clamps, jack, dumper, forklift etc.7. Design of simple pneumatic systems used in practice such as braking system,

vibrator, drilling, chisel etc.8. Industrial visit to study automation by means of hydraulic and pneumatic system

such as LPG bottling plant, hydraulic press, Injection moulding machines etc.

Assignments

1. Assignment on ISO symbols for different components of Hydraulic and Pneumatic system

2. Assignment on different types of actuators used in Pneumatic and Hydraulic system

3. Assignment on trouble shooting procedures of various hydraulic and pneumatic systems

4. Assignment on selection of circuit components for simple hydraulic and pneumatic systems

Thank You