您好,欢迎访问三七文档
当前位置:首页 > 商业/管理/HR > 管理学资料 > 空调水系统试压及冲洗方案
1.1.1.空调水系统试压及冲洗方案PipepressuretestandwashingschemeofHVACwatersystem1.1.1.1.系统试压:Pipepressuretest1).主要机具Mainmachinesandtools空压机、临时水管(软管),、压力表、试压泵、对讲机、数码相机、手电筒等。Aircompressor,temporarywaterpipe(orhose),pressuregauge,pressuretestpump,interphone,digitalcameraandtorch,etc。2).试压前的准备:Pressuretestpreparationa).密封:检查管路所有部位的流量控制阀为开启状态,末端及排水部位阀门等封闭位置为关闭状态。Sealing:Allflowcontrolvalvesofpipelinesshallbeopenedandterminalsanddrainagevalvesshallbeclosed。b).检查可能的泄漏点:系统中可能存在的薄弱环节以及泄漏部位,在试压时不能泄漏,根据系统走向、排水口位置等做好标记,并做好应急措施,设置排水阀门,紧急时打开,出口连接至排水点。管路系统充水试压的工程中,相应人员对管路系统中可能的泄漏点进行巡视,若有异常情况立即停车泄水检修,禁止带压操作。Possibleleakagepoint:Thereareweaklinksandpartswhichcannotleaksotheyshallbemarkedwithemergencymeasurestosetdrainagevalveswhichcanbeopenedunderemergencyconditionsandoutletshallbeconnectedtodrainagepointaccordingtosystemdirectionandpositionofdrainagevents.Correspondingoperatorsshallpatrolpossibleleakagepointsforinstantshutdown,drainageandrepairunderabnormalconditionsanditisstrictlyprohibitedtooperatepipelineswithpressure。c).设备连接:部分设备不能承受管路系统的试验压力,只能工作在工作压力下,此部分设备必须断开,有必要的需做末端连通。Equipmentconnection:Somemachinescannotbeartestingpressureofpipelinesystemandtheyonlycanoperateunderworkingpressuresotheymustbecutoffwithterminalconnectionifnecessary。d).排气点的设置:排气点设置在管路系统每个试压层管路的最高点。Layoutofexhaustpoint:Exhaustpointshallbeinthehighestpointofeverypressuretestlayerofpipelinesystem。e).系统排水点的设置:管路排水设置在系统最低点处和试压泵最低点位置,再将排水管路连接统一排入就近的排水总管。Layoutofsystemdrainagepoint:Drainagepointshallbeinthelowestpointofsystemandpressuretestpumpanddrainagepipeshallbeconnectedtoadjacentmaindrainagepipeuniformly。f).自来水给水点的设置:临时自来水接水点与业主商定,(如正式给水系统完成则直接接至正式给水点)。Layoutoftapwatersupplypoint:Temporarytapwaterconnectorshallbedefinedwithowner(anditshallbeconnectedtoformalwatersupplypointdirectlyifformalwatersupplysystemisfinished)。g).排放试压水总位置的确定:管路系统试压水通过软管就近排,排放具体点由业主指定(如正式排水系统完成则直接接至正式排水点)。Definitionoftotaldrainageandpressuretestposition:Pressuretestwaterofpipelinesystemshallbedrainedlocallybyhoseanddetaileddrainagepointshallbedesignatedbyowner(anditshallbeconnectedtoformalwatersupplypointdirectlyifformalwatersupplysystemisfinished)。h).检查通知:准备工作做好后我司人员自行检查,等检查无误后通知业主、管理公司、监理进行检查。Inspectionnotice:OurCompanywillinspectafterpreparationthennotifyowner,managementcompanyandsupervisionpersonnelforinspectionafterconfirmation。3).操作方法:Operationmethoda).试压的方式Pressuretestmode:各系统分区试压,试压区域按照各栋,各系统划。Pressureshallbetestedinzonesaccordingtodifferentbuildingsandsystems。先气压、后水压Pneumatictestisdonebeforehydraulictest。试压的顺序依照现场管路安装的进度确定。Pressuretestsequenceshallbedefinedaccordingtositepipelineinstallationschedule。序号No.施工条件Constructionconditions施工阶段试压介质Pressuretestmedium试验压力Testingpressure测试时间Testingperiod1管道安装完成Afterpipelineinstallation空气Air系统压力Systempressure3hours2气压完成无问题后Aftersolvingpneumaticproblems水Water系统压力的1.5倍1.5timesofsystempressure视系统确定30minutes30min系统压力Systempressure视系统确定24hours24hourb).区域试压:对相对独立的局部区域的管道进行试压Pressuretestinthezone:Pressureofpipelinesinrelativelyindependentlocalzonesshallbetested。连接:将试压泵与试压管线连接,试压用的阀门及压力表等装在管路中,在管路最高点已装好排气阀,最低点已装好泄水阀。Connection:Pressuretestpumpshallbeconnectedtopressuretestpipelinesandrelevantvalvesandpressuregaugesandsoonshallbeinstalledinpipelineswithexhaustvalveinthehighestpointandwash-outvalveinthelowestpoint。充水:打开排气阀2、球阀4、9,关闭泄水阀11、闸阀5、8,利用自来水本身压力向试压管路灌水,当自动排气阀2连续不断地向外排水时,关闭排气阀2,充水完成(见下图)。Fillingwater:The2ndexhaustvalveandthe4thor9thballvalveshallbeopenedandthe11thwash-outvalveandthe5thor8thgatevalveshallbeclosedtopourwaterintopressuretestpipelinesbywaterpressureandthe2ndexhaustvalveshallbeclosedtostopfillingwaterwhenthe2ndautomaticexhaustvalvedrainscontinuously。检查:充水完以后,目视或用涂抹肥皂水检查管路(焊缝、螺纹口、法兰口)有无渗漏水现象;如有应做好所有标记,之后进行修补,再试压。Inspection:(Weldingjoints,screwholesandflangesof)pipesshallbeinspectedbyvisualobservationorsoapwaterafterfillingwaterwithmarksandrepairthenpressureshallbetested。c).升压:升压过程应缓慢、平稳,先把压力升到试验压力的一半,对试压管段进行一次全面的检查(目测焊缝、螺纹口、法兰口),若有问题应泄水修理,严禁带压修复;若无异常则继续升压,当压力达到试验压力的3/4时,再做一次全面的检查,无异常时继续升压至试验压力,一般分2~3次升到试验压力。每次检查如发现管路破坏性漏水,应立即在管路系统预先设置的排水点排水,以免造成损失。Pressurerise:Pressureshallriseslowlyandstablyanditshallrisetohalfoftestingpressurefirstlytoinspectpressuretestpipesonceforallthoroughly(byvisualobservationtoweldingjoints,screwholesandflanges).Pipesshallbedrainedandrepairedifthereisanytroublebuttheyarestrictlyprohibitedtorepairwithpressure.Pressurewillcontinuetoriseundernormalconditionsandpipesshallbeinspectedthoroughlyagainifpressurereaches3/4oftestingpressure.Pressureshallrisetotestingpressurefor2to3timesandtheyshallbedrainedinpre-setdrainagepointofpipelinesysteminstantlytoavoiddamageifthereisdestructivewaterleakageofpipelines。d).持压:压力升到试验压力后,稳压30min,以压力不降、无渗漏为合格;再将压力降至设计压力持压24hour。先自主检查,压力降在规范允许的范围内,再请业主、管理公司,监理至现场会勘,并拍照保存备查,并做好压力试验记录,相关各方签字确认;并用表记录保存。Pressurehold-down:Pressureshallbemaintainedfor30minutesafterreachingtestingpressuretoguaranteenopressuredropandleakagethenitshalldecreasetodesignpressureforhold-downfor24hours.Wewillinspectitfirstlythenaskowner,ManagementCompanyandsupervisionpersonneltothesiteforexploration,photosandrecor
本文标题:空调水系统试压及冲洗方案
链接地址:https://www.777doc.com/doc-6317986 .html