Pneumatic & hydraulic hight tech SPKT

Pneumatic & hydraulic hight tech SPKT

8/28/2013 1 Chapter 1 Overview Pneumatic & Hydraulic Technology Ho Chi Minh City University of Technical Education Overview Instructor: Phan Thi Thu Thuy Higher Engineering Education Alliance Program Chapter 2: Air Generation Chapter 2: Air Generation Pneumatic & Hydraulic Technology Ho Chi Minh City University of Technical EducationHo Chi Minh City University of Technical Education Air Generation and Distribution Air Generation and Distribution Instructor: Phan Thi Thu Thuy Higher Engineering Education Alliance Program Contents Air compressorAir compressor 1 Air dryersAir dryers 2 Air receiverAir receiver 3 2 Air receiverAir receiver 3 Air distributionAir distribution 4 Air service equipmentAir service equipment 5 www.hcmute.edu.vn 1. Piston compressor 2. Two stage piston compressor V -type 3. Two stage piston compressor double acting 4. Piston – diaphragm compressor Air compressorAir compressor 1 3 4. Piston – diaphragm compressor 5. Sliding vane rotary compressor 6. Screw compressor 7. Roots compressor 8. Turbine compressor 9. Turbine compressor – four stages – radial compressor 10. Axial turbine compressor www.hcmute.edu.vn Objectives 1. Given name of several air compressors, be able to classify compressors based on working principle within 5 minutes 2. After attending the lecture, be able to describe the working principle of certain positive 4 describe the working principle of certain positive displacement compressors within 5 minutes 3. After attending a lecture, be able to explain the differences between intercooler and aftercooler within 5 minutes www.hcmute.edu.vn Compressor types Types of compressor Reciprocating piston compressor Piston Diaphragm Rotaty piston compressor Flow compressure Radial - flow Axial – flow 5  Reciprocating compressor are very common and provide a wide range of pressure and delivery rates.  For higher pressures multistage compression is used with intercooling between each stage of compression. Piston compressor Diaphragm compressure Sliding vane rotary compressor Roots compressor Radial - flow compressure Axial – flow compressure Two – axial screw compressor www.hcmute.edu.vn Compressor types based on working principle The major classifications of compressors are positive displacement and dynamic type.  Positive displacement can be further divided into (a) Reciprocating (b) Rotary. 6 In case of positive displacement compressors increase the pressure of air/gas by reducing the volume.  Dynamic compressors divided into (a) Radial (b)Axial. Dynamic compressors increase the air or gas velocity, which is then converted to increase the pressure. www.hcmute.edu.vn Compressor types The optimum range of pressure for reciprocating compressors are approximately:  Up to 400kPa (4 bar/58 psi) Single stage  Up to 1500kPa (15bar/217.5 psi) Double stage 7  Over 1500kPa Treble or multi-stage www.hcmute.edu.vn 1. Piston Compressor Piston compressors compress atmospheric air against an existing higher pressure at the exit port. 8 www.hcmute.edu.vn 1. Piston Compressor Consisting of: 1. Crank shaft 2. Piston 3. Piston rod 4. Cylinder 9 4. Cylinder 5. Inlet valve 6. Exhaust valve www.hcmute.edu.vn . 2: Air Generation Pneumatic & Hydraulic Technology Ho Chi Minh City University of Technical EducationHo Chi Minh City University of Technical Education. 8/28/2013 1 Chapter 1 Overview Pneumatic & Hydraulic Technology Ho Chi Minh City University of Technical Education Overview Instructor: Phan