燃气导热油炉锅炉房设计

锅炉电气控制原理图

附图是锅炉基本电气(二次)控制电路。

附图除水位、超压和报警是自动控制外，其它均为手动控制。原本我处所用锅炉电气控制都有睚动控制的，因多个香炉多个鬼，故障不断，所以改为现在的控制电路，另外，原本是烧煤的，现在改为烧柴；为此，若是烧煤的锅炉，在本电路上需增加控制煤斗升、降和限位电路，还需添加掏煤渣电路方可。

燃气锅炉房电气设计

求一位大侠帮忙把论文翻译成英文~100分谢谢燃气锅炉房的电气防爆设计摘要：通过分析燃气锅炉房事故原

2accidentreasonanalysis

Analysisofgasboilerroomthecauseoftheaccident,therearetwopossible:boilerontologyexplosion,boilerroomtoexplodegasexplosionconcentrationandexplosions.

Boilerblastfurnacebody,becausebein,orfluegasmixtureinexplosiveexistence,whenachievedbyfireorexplosionlimit,boilerheatignitescausingaccidentsinitself.Thispointandthenationalnormofbuildingfiresystemthatconformtotherelevantprovisions.Theactualcurrentboilerproducthasconsideredsafeproductionmeasurestoavoidit.Qualifiedgasboileritselfhastheexplosion-proofprocessdesign,suchasburnerinabnormalsituationautomaticstop,self-controldevicealsostopoutputfuel,Gasboilercombustionsystemhigherautomatization,includingthegaspressureishigh,lowlimitalarmprotection,whenthecontrollogicwherestepdoesnotmeettheconditionssetstartcorrespondinginterlockprotection.

Avoidtheboilerexplodedpossibility,butstillontologyexistaboveanotherpossibility,canavoid?Howtoavoidit?

Threemeasures

Infactindesign,accordingtotheboilerdesigncode"and"automaticfirealarmsystemdesigncode"GB50116-1998etcstandard,wehavetakenthefollowingmeasures:

Naturalgaspipelinesvalves,meter,mayoccurgasleakplace,boilerroommayproducegasstorageproductarea[relativedensity0.8,itistobeincommonlyroofareaintheseareas],allequippedwithcombustiblegasconcentrationmeasurementalarmdevice,accordingtocombustiblegasconcentrationsituationgiveoutsoundandlightalarmsignalandstartexhaustfan,whenleakageaccidentconcentrationsreachexplosionlimitofthelowerlimit50%[thisvalueforreferenceonly],butalsoimmediatelyclosenaturalairintakeducttotalintakesolenoidvalves.

Intheboilerroomandanaturalgaspipelineinandoutoftheroom,theincident,butalsowiththesmokeexhaustfancombustiblegasalarminterlocking(start).

Electrical,instrumentbycableselectionTongXin,notlessthan1.5mm2minimumsection.

Gasradiationtubetubetoporthenearby,thelightningrodshouldbeinstalledabovethepipejackingtipshouldbenotlessthan3m,anditsscopeofprotectiontubetopabovenotlessthan1-m.

Gaspipelineshouldbestaticgroundingdevicethat,whenpipelineasmetalmaterials,andlightningprotectionorelectricalengineeringprotectivegroundingwireconnected,themeasuredresistanceRmorethan4Ω.Inpipejoints,suchasthebend,flange,valveandpipewithgoodplacecannotmetalcontact,alsowithmetalsoftlinewillbebothendsjumper.

Intheboilerroomandanaturalgaspipelineinandoutoftheroomdoor,windowtakepressuremeasures.

Accordingtotheexplosionandfiredangerousenvironmentelectricaldevicedesignspecification"thelaws2.2.2bar,accordwithoneofthefollowingconditionsmay,whentheexplosiondangerarea:devininitem3,intheprocessofproductionusefireequipmentnear,Acombinationoftheseseveralmeasurescanclearly,electricalequipmentselectionfortheexplosion.

Atthesametimeaccordingtotheexplosionandfiredangerousenvironmentelectricaldevicedesignspecification"thelaws2.2.2bar,accordwithoneofthefollowingconditionsmay,whentheexplosiondangerareadevin:thefirst2items,andthehighestpossibleflammableexplosivechromadoesnotexceed10%ofthelowerlimit,Closeairintakeductnaturaltotalintakesolenoidvalves,concentrationexceed10%ofthelowerlimitexplosionlimit,boilerroomneartheroofareaaregasstorageproductarea,solightinglampsandlanternsandswitchchoosingisexplosion-prooftype.

4conclusion

Ingasboilerroomelectricaldesign,lightingchooseexplosion-prooflamps,otherpartadoptstheexplosion-prooftype.

references

[1]boilerdesignstandard.GB50041-1992.

[2]explosionandfiredangerousenvironmentelectricaldevicedesignstandard.GB50058-1992.

[3]thecodeforfireprotectiondesignofbuildings.GB50016-2006.

[4]automaticfirealarmsystemdesignstandard.GB50116-1998.

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