E-Book Overview
Butterworth, 1999. — 244 p. — ISBN 0750644192.
Nearly all industrial processes require objects to be moved, manipulated or subjected to some sort of force. This is frequently accomplished by means of electrical equipment (such as motors or solenoids), or via devices driven by air (pneumatics) or liquids (hydraulics). This book has been written by a process control engineer as a guide to the operation of hydraulic and pneumatic systems for all engineers and technicians who wish to have an insight into the components and operation of such a system. This second edition has been fully updated to include all recent developments such as the increasing use of proportional valves, and includes an extra expanded section on industrial safety. It will prove indispensable to all those wishing to learn about hydraulics and pneumatics. - Gives more essential, but simple maths on pipe flow and pressure drops - Offers the latest information on proportional valves and the electronics cards now appearing in hydraulic systems - Includes a new section on safety including European legislationTable of Contents Preface<strong>Fundamental principles Industrial prime movers A brief system comparison Definition of terms Pascal's law Pressure measurement Fluid flow Temperature Gas laws<strong>Hydraulic pumps and pressure regulation Pressure regulation Pump types Loading valves Filters<strong>Air compressors, air treatment and pressure regulation Compressor types Air receivers and compressor control Air treatment Pressure regulation Service units<strong>Control valves Graphic symbols Types of control valve Pilot-operated valves Check valves Shuttle and fast exhaust valves Sequence valves Time delay valves Servo valves Modular and cartridge valves<strong>Actuators Linear actuators Seals Rotary actuators Application notes<strong>Hydraulic and pneumatic accessories Hydraulic reservoirs Hydraulic accumulators Hydraulic coolers and heat exchangers Hydraulic fluids Pneumatic piping, hoses and connections Hydraulic piping, hosing and connections<strong>Process control pneumatics Signals and standards The flapper-nozzle Volume boosters The air relay and the force balance principle Pneumatic controllers Process control valves and actuators Converters Sequencing applications<strong>Fault-finding and maintenance Safety Cleanliness Fault-finding instruments Fault-finding Preventive maintenance Index
E-Book Content
Hydraulics and Pneumatics by Andrew A. Parr
• ISBN: 0750644192 • Publisher: Elsevier Science & Technology Books • Pub. Date: March 1999
Preface
Machines should work, people should think The IBM Pollyanna Principle
Practically every industrial process requires objects to be moved, manipulated or be subjected to some form of force. This is generally accomplished by means of electrical equipment (such as motors or solenoids), or via devices driven by air (pneumatics) or liquids (hydraulics). Traditionally, pneumatics and hydraulics are thought to be a mechanical engineer's subject (and are generally taught as such in colleges). In practice, techniques (and, more important, the faultfinding methodology) tend to be more akin to the ideas used in electronics and process control. This book has been written by a process control engineer as a guide to the operation of hydraulic and pneumatics systems. It is intended for engineers and technicia