Highenergyelectrostaticsparkgenerator大能量静电火花发生器

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1、HighenergystaticsparkgeneratorMiaoNanIndustrialExplosionProtectionInstitute,NortheasternUniversitymiaonandsg@yahoo.com.cnhttp://iepi.neu.edu.cnTel:15040295249Whatishighenergyspark？Highenergy：E>100JinnominalApplication：pmax,Kst,MECetc.in20Lexplosionchamber23PrincipleHigh-voltagetrigg

2、er;Low-voltagearc-sustainTheleftpartoftheelectrodesistriggercircuit.ThehighestvoltageofhighvoltagepowersupplyU1is10kV,andthecapacitanceoftriggercapacitorisverysmall.Therightpartoftheelectrodesisarc-sustainingcircuit(maindischargecircuit).Thehighestvoltageofthearc-sustainingpowerisar

3、ound1kV,andthemaincapacitanceislarge.Themainenergyisstoredinthemaincapacitance.First,S3issetto“on”tochargethemaincapacitorC2,whichstoresmuchenergy.ThevoltageofC2isnotenoughtobreakdownthegapbetweentheelectrodes.ThenS1issetto“on”,C1ischargedtohighvoltage.ThenS2issetto“on”,andthegapbet

4、weenelectrodesisbrokendownbyC1becauseitshighvoltage.Oncethegapisbrokendown,energyinC2isdischargedbyarcsustainingdischarge,andtheenergyisreleasedinthegapbetweentheelectrodes.ControlboxFrontBack5Apparatus6DustexplosiontestParameters:1.pmax，Kst2.MECIgnition：ChemicalIgnition,Electrostat

5、icIgnitionDust：Lycopodium,HCMA(3-Hydroxy-4-methoxycinnamaldehyde)71.pmax,Kst-ChemicalIgnition-LycopodiumNo.C/(g/m3)pm/MPaKm/(MPa·m/s)11250.6077.35722500.71112.70232500.70313.14542500.70316.81455000.71817.17565000.68617.26575000.76415.92385000.77416.81795000.77417.891107500.70316.459

6、117500.67216.871127500.75014.4021310000.69914.651pmax=0.734MPa，Kst=17.014/(MPa·m/s)81.pmax,Kst-ChemicalIgnition-HCMANo.C/(g/m3)pm/MPaKm/(MPa·m/s)11250.29714.25722500.73624.77932500.72326.38942500.81527.52055000.95434.26165000.94136.58575000.92032.78087500.83132.82997500.83733.504107

7、500.80733.0981110000.79628.899pmax=0.938MPa，Kst=34.542/(MPa·m/s)9No.C/(g/m3)pm/MPaKm/(MPa·m/s)11250.6426.28222500.67910.73432500.67610.55645000.71715.40455000.69512.52365000.72514.76077500.66712.88187500.64413.239910000.64212.363pmax=0.712MPa，Kst=14.229/(MPa·m/s)1.pmax,Kst-Electrost

8、aticIgnition-Lycopo