船用空气压缩机动画原理(Air-compressor)课件

1、The course syllabus: (1) The application of compressed air(2) The working process of an air compressorIntroduction第1页，共16页。第2页，共16页。The application of compressed air : (1) Main engine starting and control；(2) Auxiliary engine starting and control(3) Pneumatic machines and Pneumatic tools(4) Cleannes

2、sThe end of section 1第3页，共16页。Emergency Air CompressorAuxiliaryAir BottleDiesel EngineGeneratorPowerStationMotorMain compressorMainAir BottleMain EngineA kind of schematic diagram of a compressed air systemPressure Reduction StationElevated TankMixed usesAutomatic Control第4页，共16页。Suction portDischar

3、ge portWorking Process of Reciprocating Air Compressor第5页，共16页。VcWhen the piston is at TDC, the volume above the first piston ring is defined as clearance volume.The impact between piston and cylinder cover, due to thermal expansion of piston can be avoided.It can also avoid liquid impact.第6页，共16页。P

4、V222341VpPsPd第7页，共16页。PV222341VpPsPd1-2：Adiabatic process第8页，共16页。PV222341VpPsPd1-2：Isothermal process第9页，共16页。PV222341VpPsPd1-2：Polytrophic process第10页，共16页。PV222341VpPsPd1-2：Adiabatic process1-2：Polytrophic process1-2：Isothermal process第11页，共16页。1.-Intake filter; 2.-LP suction valve; 3.-LP dischar

5、ge valve ;4.-LP safety valve ; 5.-intercooler; 6.-HP valve; 7.-HP discharge valve; 8.-aftercooler;9.-HP safety valve234567891A two-stage compressor with piston operating in series第12页，共16页。1.-connecting rod 2. -piston 3. -discharge valve 4.-suction valve 5.-cylinder 6. -crank-shaft第13页，共16页。The advantages :(1) Reduce discharge temperature and ensure good lubrication.(2) Increase the delivered air quantity.(3) Save power.(4) Reduce forces exerted on the com