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PPR管道施工工艺PPRpipeinstallationmethodBasisofdrawingup1.1《给水排水管道工程施工及验收标准》GB50268-97。《ConstructionandacceptancenormofWatersupplyanddrainspipingengineering1.2《室内管道支架及吊架》03S402《Pipingsupportindoor施工工艺:Constructiontechnique:→材料进货检验→PPR管预制加工→支吊架制作安装→PPR管安装→PPR管试验Accordingtothearrangementand floworderoffield allkindsofpipelines,confirmtheprocess flow. This engineering adopts the following process flow: constructionpreparation→material stocking test→PPR pipe pre-processing→manufacture andinstallationofsupportandhanger→installationofPPRpipe→PPRpipetestpreparation能施工。Construction work and technicians are strictly familiar with the original drawing,comprehenddesignpurpose,andcarryouttheconstructionaftertheclaritytodrawingandactualpipelinearrangement.施工人员须生疏PPR管的一般性能,把握必需的操作要点。在各项预制加工工程开头前,依据实际编制材料打算,将需要的材料、设备等按规格、型号预备好,运至现场。ConstructermustknowwellthegeneralperformanceofPPR,masternecessaryoperationpoints,Beforeeach precast processing project,according to the plan of practicalschedulingmaterial,wellpreparetheneededmaterialandequipmentaccordingtospecificationandmodelandtransporttothefield.书和质量合格证书,须认真检查并经业主验明材质,核对质保书,规格、型号等,合格前方能入库,并分别作好标识。Materialequipmentrequirements:Theofferedfieldpipeandpipefittingsshouldaccordwithdesignprescription,addingwithproductstipulationandqualitycertification.Strictlyexamineandidentifymaterialbyowner,checkqualityguarantee,specificationandmodelsetc,warehouseafterqualification,andmarkseparately.管材和管件的内外壁应光滑平坦,无气泡、裂纹、脱皮和明显的痕纹、凹陷,色泽应根本一致。不得使用有损坏迹象的材料。如觉察管道质量有特别,应在使用前进展复检。Theinternalandexternalsurfaceofpipeandpipefittingsshouldbesmoothandflat,withoutairbladder,crack,desquamate,obvioustraceandhollow,andthecolorandlustershouldbeconsistent.Thematerialwithdamagedmarkshouldbeforbidden.Ifitisdiscoveredthatthereisprobleminthepipelinequality,recheckitbeforeusing.管材的端面应垂直于管材的轴线。管件应完整、无缺损、无变形。Endfaceofpipeshouldbeuprighttotheaxesofpipe.Thepipefittingsshouldbeintact,withoutlackanddistortion.管件时,应留神轻放,防止油污,严禁猛烈撞击,与锐利物触碰和抛、摔、拖。管材开口处应准时封堵,以免管道堵塞造成不必要的铺张。Pipefittingandpipeshouldnotbeplacedinthesunshineforalongtimetoavoidthepipecurveinstorageandtransportation,andpilingupthemshouldbelevel.Whenconveyingpipeandpipefittings,theyshouldhandledwithcareandavoidoilstain.Strongbump,cast,throwanddrawisforbidden.Pipehatchshouldbeimmediatelypluggedtoavoidpipejamandunnecessarywaste.度接近施工现场环境温度。Whenthereislargedifferenceinconstructionfieldandstoragetemperature,shouldplacepipefittingandpipeatthefieldbeforeinstallationforcertaintimeandmakeitstemperatureclosuretoenvironmenttemperatureofconstructionfield.本工程PPR管道承受热熔连接,施工前应认真检查所使用的热熔机具、割刀是否符合要求和正常使用,使用的电源及电线是否正常和安全。如以以下图:Thisprojectpipe-PPRpipeadoptsheatfusion.Beforeconstruction,shouldcarefullyexaminewhethertheusinghotmeltequipmentandcutterknifeaccordwithrequirementsandnormalservice,theusingpowersupplyandwirearenormalandsecurity.asthefollowingdrawings.材料进货检验:Material-stockingtest10%,管材同一截面的壁厚偏差应<14%,内外壁应光滑、平坦,无气泡、裂口、裂纹、凹陷、脱皮和严峻的冷斑及明显的痕迹。Forinsuringtheinstallationquality,shouldstrictlytestthematerialwhenitisstocked.Theellipticityofpipediametershouldbelessthan10%.Thewallthicknessdeviationinthesamepipesectionshouldbelessthan14%.Theinternalandexternalsurfaceshouldbesmooth,flat,withoutairbladder,crack,hollowingdesquamate,severecoldappearanceandobvioustrace.PPR管道预制加工: PrecastprocessingofinnerpipePEpipelinePE管连接:承受热熔连接方式。热熔连接最为牢靠,操作便利,气密性好,接口强度高。本方案中热熔焊接为关键工序,具体方案如下:PPRpipeconnection:adopthotmeltconnectionmethod.Hotmeltmethodisthemostreliable,withconvenientoperationandgoodairtightnessandhighjointstrength.Inthisproject,sweatingsolderingisthekeyworkingprocedure;thedetailprojectisasthefollowings.〔1〕PPR管道接触式焊接安装PEpipetouchweldinginstallation其施工方法及技术措施如下:Methodofexecutionofworksandactionstobetaken①管道连接承受热熔焊接。热熔焊接为关键工序,必需严格把握。Thepipingconjunctionadoptshotmelttoweld.Thehotmeltweldisthekeyworkhavetocontrolstrictly.②管道焊接主要程序:Thepipingweldsmainprocedure:A:设置焊机的初始值〔液压值、温度Establishtheinitialvalueoftheweldingmachine(theliquidpressesvalue,temperature)液压值的设置:Theconstitutionoftheliquidpressesvalue管径DN100MM0.2MPa;DiameterofpipeisDN100MMthefollowing,theliquidpressesvaluetosetfor0.2MPa;管径DN100-350MM时,0.4-0.5MPa;DiameterofpipeisDN100-DN350MM,theliquidpressesvaluetosetfor0.4-0.5MPa;温度的设置Theconstitutionofthetemperature加热板预热时,温度设定为210℃;Heatplankpreparehot,thetemperaturesetsto210℃;加热焊口时,190-210℃.Whileheatingthewelding,thetemperaturesetsto190-210℃.B:固定焊管,保证待焊接的管及管件中心在一条直线上,错口应在2毫米以内;Fixtheweldingpipe,assurancetreatstoweldingpipeandfitting’s centerisonastraightline,Distanceofshuntshouldat2mmin;C:抛磨管端口,保证端口平坦,再用医用酒精清洗管端口,保证端口内外壁的清洁;Throwtowhetpipe’shead,promisepipe’sheadneat,useagaintocuretocleanpipe’sheadwiththealcohol,promisetheinsideandoutsidewallofpipe’sheadtoclean;D20C时加热管及管件端口焊接参数如下表Outdoortemperatureisat20CheatingpipeandtubeportweldingparametersfollowingtableE:取出焊接好的管段,检查焊口,焊口宽度、高度、外形、均匀度等均符合焊接标准即为Takeouttoweldingpipe,checktheweldingsewtheweldingsewwidth,height,shape,evendegree...etc.allmatchingtoweldstandardisqualified,thenbeabletoinstall.管道试压及冲洗PipelinePressureTestingandFlushinga).管道试压:PipelinePressureTesting接部位的工程质量。Afterinstallation,pipelineshouldbetakenstrengthtestingandhermetictestingaccordingtodesignaswellasthequalitytestofpipelinesystemandconnections.0.07MPa0.07MPa的管道一般承受气压试验。Mediaofstrengthtestingandhermetictestingiswaterandthewaterusedfortestshouldmeettherelativestandards.Ifnorequestindesign,itusuallygoeslikebelow:pipelinewithworkpressuremorethan0.07MPashouldbetakenwaterpressuretesting;pipelinewithworkpressurelessthan0.07MPashouldbetakenairpressuretest.管道系统试验前应具备以下条件:Followingconditionsshouldbemetbeforetesting:管路系统施工安装完毕,且符合设计和标准的要求。Finishthepipelinesysteminstallationandmeetthedesignandspecificationrequest.全部支、吊架安装完毕且合格。 Supportsinstallationshouldbefinishedandqualified.管道位置、标高、坡度、坡向等经复查合格;试验用的临时加固措施经检查确认安全牢靠。Pipeline’sposition,elevation,gradientandslopdirectionshouldbequalified.Thetemporaryfacilityusedfortestshouldbestableandsafe.1.5级,表的满刻度值为最大1.5-22Pressuremeterusedfortestshouldbeokandmarkedwithprecisionnolessthan1.5-level.Thefullscalevalueshouldbe1.5-2timesasbiggesttested-pressure.具体试验方法宜承受分区、分层试压和系统试压相结合的方法。分区、分层试压时,待系统布满水且放净空气后进展加压1060分钟内压力不得下降最低点压力为准,压力升至试验压力后,稳10分钟,压力下降不得大于20Kpa,再将系统压力降至工作压力,外观检查无渗漏为合格。通知有关人员验收、办理交接手续,然后把水泄净、撤除试压泵和水源Thetestmethodistobechosenthecombinationofsubareatestanddelaminationtest.Whendoingtest,addpressureafterpipeisfullofwaterandwithoutairin.Firstincreasethepressureofpipelinenetorpipesectiontotestedpressureandkeepitfor10minwithnodescendingofworkpressure.Thenlowerthepressuretoworkpressurefor60mintocheckifthereareanyleakages.Noleakagesarequalified.Whendoingtestforpipelinesystem,firstincreasethepressurefromthelowesttotested-pressureandkeepitfor10minwithpressuredeclinelessthan20Kpa.Thenlowerthesystempressuretoworkpressuretocheckifthereareanyleakages.Noleakagesarequalified.Finallynoticerelativepersonnelforcheckanddischargethewaterinpipeandremovethepressure-testingpumpandshutoffwatersupply.试验时不得敲击管道。Don’tbeatthepipewhentesting.试压完毕后,恢复原有的设备、表计,并撤除隔断用盲板,试验后填写试压记录并作好验收签证。Recovertheequipmentandmeterandremovetheblindplateforpartitionaftertest.Thenfillthetestrecord.b). Pipelineblowingandflushing管道水系统冲洗:PipelineFlushingofWaterPipeSystem:调试、运行前必需进展系统的冲洗:水系统主、干管必需开式进展冲洗排污,反复屡次直至确认清洁,然后才允许转入封闭式循环过滤〔管网、机组、设备整体进展〕,反复清理过Itmustdoflushingaftertestandcommissioning:mainpipeandbranchesshouldbedownflushingrepeatedlyandthenitmaybeinclosedcirclingfiltration(includepipelinenet,units,equipment).Cleanthefilteragainandagainuntilthesystemisclean.管道系统在清
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