往復壓縮機壓開吸氣閥氣量調(diào)節(jié)的理論與實驗研究.pdf

1、浙江大學碩士學位論文往復壓縮機壓開吸氣閥氣量調(diào)節(jié)的理論與實驗研究姓名：孫學亮申請學位級別：碩士專業(yè)：化工過程機械指導教師：吳榮仁洪偉榮20060201ABSTRACTUnloadinginletvalvesatpanialstrokeisonemearlsofcapacityregulatingforreciprocatingcompressor，anditpossesseseconomic，full—rangeandeasyusing

2、characterWithinletvalvesunloadedbysomedevice，gasflowsbackintosuctioncavitybeforebeingcompressed，whichcallsavetheenergyChangingthedurationofunloadinginletvalvesconducestovaryingcapacitytheoreticallyintherangeofO—100％Compr

3、esscirculationofanideal—gasreciprocatingcompressorwithunloadedinletvalveswasanalyzedandaformulawasdeducedtocalculatecapacityNumericalsimulationofunloadedvalvedynamicsshowsinfluenceoftheunloadingstructure，andsomeadviceWas

4、givenfordesignofunloadingsystemExperimentoncapacitycontrolsystemwithrotationalhydraulicdistributorrepresentstherealregulationeffectThroughthisresearchtask，thefollowingtopicscanbeobtained：1Combinedwiththesimplifiedthermod

5、ynamicscirculationofcompressor，thetheoreticalcalculationofcapacityandindicatedpowerhasbeendeduced，andtheregulationprinciplewasrevealed2Differentialequationsofgasflowandvalvemotionwereestablished，andcomputeraidedanalysisw

6、ithvariedunloadingtimewascarriedoutMeansteducetheimpactbetweenvalveplateandvalveseatweresuggested3Asimplecapacityregulationsystemwit】hrotationalhydraulicdistributorwasintroduced，andthetheoryofrotatoranddistributorcontrol

7、bymicroprocessorwasexplainedResultoftheoreticalexperimentshowsthattheunloadingtimeCanbecontrolled4Experimentofthecontrolsystemonarealreciprocatingcompressorhasbeenaccomplished，Theresultsindicate：Withthedurationoftheunloa