Fluid Power Systems Theory And Practice.ppt 6a1x64

FLUID POWER SYSTEMS Theory and Practice

Oleh : Ir.Arino Anzip,MEngSc PROGRAM D3 TEKNIK MESIN - ITS

Textbook • • • • •

• •

Anthony Esposito, Fluid Power with Applications, 7th Edition, Pearson Education Inc, 2009 Merkle D, Schrader B dan Thomas M, Hydraulics : Textbook and Workbook Basic Level TP 501, Festo Didactic GmbH and Co, 1998 Merkle D, Rupp K dan Scholz M, Electrohydraulics : Textbook and Workbook Basic Level TP 601, Festo Didactic KG, 1994 Croser P, Pneumatics : Textbook and Workbook Basic Level 101, Festo Didactic KG, 1989 Prede D dan Scholz D, Electropneumatics : Textbook and Workbook Basic Level TP 201, Festo Didactic GmbH and Co, 2002. Vickers Industrial Hydraulics Manual, 4th Edition, Vickers Incorporated, 1999 Cundiff,J.S, Fluid Power Circuits and Controls, CRC Press, 2002

LECTURE MATERIALS COVERED • • • • •

•

Introduction to Fluid Power Systems Hydraulic Fluids Energy and Power in Hydraulic Systems Signal Control Section of Hydraulic Systems Hydraulic Power Section 1. Power Supply Section 2. Power Control Section 3. Drive Section Hydraulic Circuit Design and Analysis

• Pneumatic Systems 1. Air Preparation 2. Pneumatic Systems Components • Pneumatic Circuit and Applications 1. Pneumatic Circuit Design 2. Air Pressure Losses Calculation 3. Basic Pneumatic Circuit • Basic Electrical Control for Fluid Power Circuit 1. Electrical Components 2. Electro-pneumatic 3. Electro-hydraulic

POWER TRANSMISSION SYSTEM

Power Transmission Methods 1. Mechanical Power Transmission : Menggunakan elemen – elemen mesin untuk memindahkan daya

2. Electrical Power Transmission Systems Memanfaatkan jaringan listrik sebagai media pemindah daya listrik

Electrical Network Systems

3.Fluid Power Systems • Terdiri atas Sistem Pneumatik dan Hidraulik

Introduction to Fluid Power Systems • Fluid Power : Technology which deals with the generation, control and transmission of power using pressurized fluids • Fluid itself can be divided by 1. Air or Gas 2. Liquid such as water, mineral - based petroleum oils and synthetic oils

The Difference Between Gas and Liquid

Fluid Systems in Our Society : • Fluid Transport Systems Delivery of fluid from one place to another to accomplish some useful purpose such as pumping station and pneumatic conveying • Fluid Power Systems 1. Pneumatic Systems using gas or air as working fluid or bearing media 2. Hydraulic Systems using hydraulic fluids like petroleum oils as bearing media (working fluid)

HYDRAULIC SYSTEMS

Pumping Station

Components of Hydraulic Systems • Tank or Reservoir to contain oil • Pump converts mechanical power into hydraulic power • Electric Motor to drive pump • Valve to control oil direction, pressure and flow rate or capacity • Actuator to convert hydraulic power to mechanical power like hydraulic motor and cylinder • Piping System carrying oil from one component to another

Hydraulic Systems

HYDRAULIC SYSTEMS

Hydraulic Systems Components

Components of Pneumatic Systems • Air Receiver to contain pressurized air • Compressor to compress air • Electric Motor or other Prime Mover to drive compressor • Valve to control air direction, pressure and flow rate or capacity • Actuator to convert gas or air power to mechanical power like pneumatic motor and cylinder • Piping System carrying air from one component to another

Pneumatic Systems • Komponen – komponen sistem Pneumatik

Schematic Drawing of Pneumatic Systems

APPLICATIONS OF FLUID POWER SYSTEMS • Mobile : Fluid power is used to transport, excavate, lift

materials and control or power mobile equipment such as backhoes, tractors, graders etc

• Industrials : Provide power transmission and motion

control for machines of industry such as metalworking equipment, controllers, material handling and assembly equipment • Aerospace : Fluid power is used for commercial and military aircraft, spacecraft and related equipment such as landing gear system, brakes, flight controls and cargo loading equipment • Health : Dentist equipment, bed for patients, radiology equipment etc

Backhoe

Injection Molding Machine

Hydraulic Press Machine

Hydraulic Bench Equipment

Hydraulic Elevator in CVN USS George Washington

Aircraft Hydraulics

B2B Stealth Bomber

Aerospace Hydraulics

Pneumatic Application in Industry

HMS - QUEEN ELIZABETH

WHEN FLUID POWER SYSTEMS ARE USED ?

The Advantages of Fluid Power Systems • • • • • • • •

Multiplication and variation of forces Easy and accurate control Multi – function control Compact Low speed torque Constant force or torque Simplicity and safety Established standards and engineering (our Lab. uses ISO and ANSI standards)

Disadvantages of Fluid Power Systems • Higher initial investment • Transferring energy is slower when compared to electrical system • When hydraulic systems leak, it can pollute the environments • More dangerous than other systems due to high pressure fluids involved i.e. 15000 psi of working pressure

Fluid Power Systems Personnel in Industry • Fluid power mechanics Responsible for repair and maintenance of fluid power equipment • Fluid power technicians These people assist engineers in deg, testing, troubleshooting and maintaining fluid power systems • Fluid power engineers People who perform advanced design, development and testing of fluid power equipment