机理研究［D］．焦作:河南理工大学，2017.PEIB．Ｒesearchonsynergisticlawandmechanismofgas-liquidtwo-phasemediumforsuppressingpipelinegasexplosion［D］．Jiaozuo:HenanUniversityofTechnology，2017.Ｒesearchoninertgas-watermistsynergisticexplosionsuppressionofmethaneHUShuangqi1，ZHUWenbo1，HULishuang1，LIUGenglin1，LILianqiang2(1SchoolofEnvironmentandSafetyEngineering，NorthUniversityofChina，Taiyuan030051，China;2InstituteofOccupationalHealthofOrdnanceIndustry，Xi’an710065，China)Abstract:Inthispaper，thesuppressionofgasexplosionwasstudiedbyusinga20Lself-modifiedsphericalexplosionvessel．Inexperiments，thegaspartialpressuremethodwasadoptedforthepreparationofmixedgas．Theresearchquantitativelyanalyzedtheexplosionpressureandtheexplosionpressureriserateofthegasexplosionandtheexplosionsuppressionefficiencywhenvariousinertgaseswereinjected．Theeffectsofthreeinertgases(CO2，N2，Ar)onthemaximumexplosionpressureandthemaximumexplosionpressureriserateofCH4explosionwereanalyzed．TheresultsshowthattheexplosionsuppressioneffectofCO2issuperiortotheothertwoinertgases．WhenthevolumefractionofCO2is6%，themaximumexplosionpressureandexplosionpressureriserateoftheCH4explosionare0.113MPaand1.58MPa/s，decliningrespectivelyby78.6%and86.4%．Itisprovedthattheoccurrenceofthegasexplosioncanbedelayedandtheexplosionintensitycanbereducedbyallofthethreeinertgases．However，forN2andAr，thevolumefractionofinertgasshouldbeincreasedtoachievethesameeffectofexplosionsuppressionasCO2．Therefore，accordingtothesingle-phaseexplosionsuppressionresultsabove，CO2，withthebestexplosionsuppressioneffectamongthethreeinertgases，istheoptimumselectiontostudythesynergisticeffectsofinertgaswithwatermistonexplosionsuppressionefficiency．Largeamountsofrepeatedexperimentsshowthattheexplosionsuppressionefficiencyof2%CO2－1MPawatermistisincreasedfrom20.3%withasingle-phasevolumefractionof2%CO2to38.5%，andtheexplosionsuppressionefficiencyissignificantlyimproved．Itmeansthatthesynergisticexplosionsuppressionefficiencyofiner...
