《工业分析 Industrial Analysis》课件-气体采样工具与采样方法（双语）

项目三：煤气质量分析任务一：气体样品采样方法气体样品采样工具与采样方法课程：工业分析中文Scenario3:QualityanalysisofcoalgasTask1:ThesamplingmethodofgassampleSamplingtoolsandmethodsforgassamplesCourse:IndustrialAnalysisEglish采样设备：4部分结构采样形式：4种采样形式采样方法：3种采样方法中文Samplingequipment:4-partstructureSamplingforms:4typesofsamplingformsSamplingmethods:3samplingmethodsEglish一、四部分结构中文一、4-partstructureSamplingtubeFilter→FilterwithglasswooltoremovemechanicalimpuritiesfromthegasCooler→Gasabove200°CneedstobecooledGascontainer->Collectrawsamples4-partstructureEglish二、4种采样形式中文二、Fourtypesofsamplingforms1.AverageSample

Samplingusingacertainsamplingdevicewithinacertaintimerange,oneproductioncycle,oroneproductioncycle

Agassamplethatcanrepresentaprocessorcycle;2.Regularsamplessamplescollectedatcertaintimeintervals3.Positioningsamplessamplescollectedfromdifferentpartsofproductionequipment;4.MixedsampleagassampleobtainedbymixingdifferentobjectsorthesameobjectatdifferenttimesEglish

三、3种采样方法中文三、ThreesamplingmethodsBasedonthedifferencebetweenthepressureandatmosphericpressureofthesampletobesampledSamplingmethodunderpositivepressureSamplingmethodunderatmosphericpressureSamplingmethodundernegativepressureEglish1、常压状态气体采样

气体状态：等于大气压或低正压或低负压采样方法：封闭液采样法、流水抽气法使用容器：采样瓶或采样管中文1、Samplingmethodunder

atmospheric

pressureGasstate:equaltoatmosphericpressureorlowpositivepressureorlownegativepressureSamplingmethods:closedliquidsamplingmethod,flowingwaterpumpingmethodUsingcontainers:samplingbottlesortubesEglish（1）采样瓶采样中文（1）Samplingwithasamplingbottlegas-samplebottleClosedliquidbottlerubbertube4

cockSpringclipDevicediagramofsamplingbottleFirstly,fillbottle2withsealingliquid→openspringclip5→raisebottle2→sealingliquidentersbottle1→exhaustairfrombottle1.Thenusetheplug4andrubbertube3→connecttothesamplingtube→lowerbottle2→gasentersbottle1→Totherequiredamount,closetheplug4andclampthespring5→CompletethesamplingworkEglish（2）采样管采样中文（2）Samplingwithasamplingtubecockcockgas-sampletubeClosedliquidbottleDevicediagramofsamplingtubeFirstly,fillbottle4withsealingliquid→opentherotaryplugs2and3andraisebottle4→thesealingliquidentersandfillstube1→exhausttheairintube1.Thenpassthroughtube1andtheplug,rubbertube→connecttothesamplingtube→lowerbottle4→gasentersthetubeuntiltheclosedliquiddropsbelowplug2→closeplugs2and3→completethesamplingwork.Eglish（3）流水抽气法采样（适用于低气压或负压不太高的负压状态气体）中文（3）Samplingusingflowingwaterpumpingmethod（Applicabletothecollectionofnegativepressuregaswithlowpressureorlownegativepressure）First,connectgassampletube1andrubbertube6tothesamplingtube→Connectvacuumpump4tothetapwaterheadthroughrubbertube5Thenturnonthetapandcock2,3→togeneratenegativepressureintheflowingvacuumpump→drawthegasintothegassampletube→afteracertainperiodoftime,closethetapandcock2,3→tocompletethesamplingworkcockrubbertubecockrubbertubeFlowingvacuumpumpgas-sampletubeDevicediagramofFlowingAirExtractionsamplingMethodEglish2.正压状态气体的采样特点：气体借助自己的正压进入气体采样容器。

注意事项：压力过大，应注意调整采样管旋塞，或者在采样装置与气体容器之间加装缓冲瓶。中文Features:Gasentersthegassamplingcontainerwithitsownpositivepressure.Attention:Ifthepressureistoohigh,attentionshouldbepaidtoadjustingthesamplingtubeplug,oraddingabufferbottlebetweenthesamplingdeviceandthegascontainer.2、SamplingmethodunderpositivepressureGasstate:Gaspressureismuchhigherthanatmosphericpressure;Samplingtools:samplingbottle,samplingtube,rubberbag.Eglish3.负压状态气体的采样气体状态：远低于大气压力的气体称负压气体采样方法：抽气泵减压法（负压不太高）抽空容器法（负压过高），抽空容器是0.5～3.0L容器，由优质厚壁的玻璃瓶或管瓶组成具有旋塞。中文3、SamplingmethodundernegativepressureGasstate:ThepressureofthegasismuchlowerthanatmosphericpressureSamplingmethod:flowingwaterpumpingmethod(withlownegativepressure)Vacuumcontainermethod(highnegativepressure):Thevacuumcontainerisa0.5-3.0Lcontainercomposedofhigh-qualitythickwalledglassbottlesortubebottles,witharotaryplug.Eglish负压状态气体的采样步骤：中文Samplingstepsforgasundernegativepressure:Beforesampling,useamechanicalvacuumpumptoremoveairfromthebottleortube→Thepressureinthebottleortubeshouldbereducedtobelow60-100mmHg→Closetherotaryplugandweighit;Whensampling,connectthevacuumcontain