Safety manual interpretation training
2020-02-21
WELCOME TO
WELCOME TO
Hengshui qixing electric technology CO.,LTD.
Hengshui qixing electric technology CO.,LTD.
We are specialized in the design, overhaul, transformation, production and installation of air preheater and gas-gas heater (GGH).With the help of many customers and scientific experts, we have made some achievements. For the air leakage treatment of the air preheater, we have developed the flexible contact and the warehouse double sealing device one after another, achieving good results in many power plants. The mature and stable enamel production technology prevents the shedding and corrosion of enamel during the operation. In this field, we have more than ten years of production and research history. Besides, the scientific and reasonable design of soot blowing system increases the soot blowing effect, reduce the damage to thermoelements to ensure the normal operation of the unit. We have rich transforming experience and a solid technical team in the design and installation of the soot blowing system, the manufacture of the enamel heat exchanger components, the waveform design, the body maintenance and the DCS control system.
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2003
/yearsThe company was founded in 2003
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9090
/㎡Company area
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6109
million yuanTotal assets of the company
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11000
tonAnnual production capacity
| Product ----
| Product ---- Air preheater /GGH | Usage maintenance
Air preheater /GGH
QiXing Electric Power provides the electric power market with the whole set of qualified air preheater and GGH. We have experience of many years of and advanced technology on pressure type shearing of heat exchanger components, enamel coating process and enamel firing process, which have always been appraised by our customers.
Usage maintenance
Airpreheaterheattransfercomponents,installation,use,maintenanceinstructions Hoistingcomponents:Qixingpowersupplyheatexchangercomponentsaregenerallytwokindsofmaterials,oneforthelow-carbonsteelheatexchangercomponents,componentthicknessbetween0.5~0.6mm,usedinthehotend;theotherfortheenamelheatexchangercomponentscoatedAfterthethicknessof1.15~1.2mm,usedinthecoldside.Becausetheheattransfercomponentsarerolledbythesheet,inthetransport,liftingtheendofthecomponentmustbeavoideddamage,otherwise,willcausethedeformationofcomponents,enamelsheddingandotherissues,thegeneralFoundationwillprovideadedicatedspreader,Tolifttheheattransferelementcartridge.Prohibitedtheuseofordinarycarbonsteelspreadermade!.Duetofatigueresistanceofcarbonsteelispoor,pronetodecoupling,fracture,etc.,willcauseagreatsecurityaccident! HeattransfercomponentsTransportationStorage:Heattransfercomponentsintheloadingandtransportationprocessmustbeputneatlycode,andtietheprotectiverope,coveredwithraincloth,beforeunloadingthecar,therainandraintoshaketothecar,forbiddenshakingscatteredonthecomponents.Thesiteoftheheatexchangecomponentsmustbefreeofwater,debris,andotherplacesthanthecementplains,andwitharainclothtoprotect,prohibitloadingandunloadingintherainydayheatexchangercomponents,otherwiseitwillcausecorrosion. Heatexchangerinstallationprotection:Intheinstallation,avoidtouchingthesteelcolumn,electrichoisthook,guidechainandothermetalobjectsinthehoistinggrid,acertainsupporttocheckthesolidsteel,andcleanupweldingslag,scrapandotherdebris,Whenthecomponentstransferredtothegrid,onebyoneplacedasbestosblanket,theendofthecomponentstobeprotectedtopreventthenextinstallationprocessdamagetothecomponents! ComponentfoulingCorrosioncontrol:Theactualcombustionoftheboileralmostallthefuelcontainssulfur,theboilercombustionprocesswillbe2to6%ofthesulfurdioxideintosulfurtrioxide,andfluegasinthewaterreaction,denitrificationammoniaescapereactionofammoniasulfateformation,Inthecold-sideheattransferelementsurfacewillformastickywetcorrosive,inadditiontothefluegasinthefluegasandcatalystintheprocessofblowingtheparticles,fragmentsandotherdamage,andthuscontinuetocorrosionheatexchangercomponents,pluggingHeattransferchannel,resultinginpoorheattransferheatexchangercomponents,shortlife,largepressureandotherissues.SO2/SO3conversionisnotmorethan1%(molarratio);toavoidtheairpreheaterinthecontroloftherateoftheescapeofammoniainthegeneralcontrolof2.3mg/m3;The"coldjunctiontemperature"(fluegasoutlettemperature+airinlettemperature)isbelowtherecommendedminimumvalueforlongperiodsofoperation.Avoidingwaterleakagefromtheeconomizerorheaterfailureincreasesthedewpointofthefluegas,Roadleakageshouldbepromptlyrepaired. Firepreventionmeasures:Intheignition,low-loadoperation,poorcombustionconditions,theincompletecombustionofcoal,andignitionoilparcelswillappearsecondarycombustion,andthusmustpreventthesurfaceofthefuelelementoftheheattransferelementdeposition,otherwiseitwillcauseairpre-Firesituation.Theairpreheaterrotormustbekeptrotating;keepblowingsootregularlytoensurethattheheatexchangersurfaceclean;paycloseattentiontotheairpreheaterandairtemperature,whenthetemperatureanomaliesoccur,Shouldbepromptlyinvestigatedandeliminated;intheeventofsecondaryignition,mustkeeptheblower,induceddraftfan,sootblower,lowpressurewaterinanormalstate;firemonitoringsystemshouldbemaintainedinnormalworkingcondition. Checkbeforeandafterrunning:1,checkandthoroughlycleantheupperpartoftheairpre-heater,theflueinsidethetemporarypedal,scrap,support,etc.;2,checkthesootblowerbarrelbracketweldingissolid,reliable,ifnecessary,tostrengthenmeasurestopreventsootstentoffstuckrotor;3,usingthehandleplaterotor2lapstoseewhetherthefreerotation;4,checkthehigh-pressurewater,steampipes,valvesarenormal,soakedsteampipedrainageisnormal,sootvalvebeforethepressureandsuperheatisnormal;5,checktheradial,circumferential,axialsealinggap,sealingplateboltsarenormal;6,checktherotortopandbottombearings,gearboxoillubricationoilleveltomeettherequirements;7,checktheairpreheaterimportandexportbafflehasbeenclosed;8,checkthefiremonitoringdevice,checkthelocalcabinettoensureitsnormalwork;9,checktoensurethattherotorstallalarmdeviceisworkingproperly;10,checktheairpreheaterreducer,upperandlowerbearingrunningsoundisnormal;11,checkthedrivemotorcurrentisnormal;12,checktheairpreheaterair,smokeimportandexportoftemperatureisnormal. Heatexchangeelementsoot-blowing:1,theairpreheaternormaloperationafterblowingonceevery8hours,andinstrictaccordancewiththesootblowerinstructionsthatensurethattheairpreheaterresistancetomaintaintheoperatingvaluewithinthedesignvalue,beforetheshutdown,intheboilerstartupprocessandSootblowingmustbeintensifiedduringthelowloadstage.2,inordertoavoidcondensationonthesurfaceoftheheatexchangeelement,thesteamshouldbesoothedwhenthetemperatureoftheheatexchangeelementishigh,sothesootblowingshouldbeselectedundertheconditionthattheunitreachesacertainload.3,inordertoensurethatthesootblowingeffect,topreventalltheexternalwaterintotheairpreheater,payattentiontotheselectionofacertainpressureandtemperatu
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E-mail：zhongnengjiye@163.com Add：North Industrial Park, Hengshui City, Hebei Province
Hengshui Qixing Electric Technology Co., Ltd 冀ICP备08004088号-1 Powerded by 300.cn
