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发电厂用阀门安装、操作和维护说明书(文件编号:IME-TOT-001,版次0)2007年2月■总部和工厂韩国,忠清南道,天安,斗井洞63-6,电话:041-562-3401传真:041-556-3401■首尔办公室RM#301,SAMYOUNGBLDG,549-3,BANPO-DONG,SEOCHO-KU,SEOUL,KOREA电话:02-534-6091传真:041-556-3401INSTALLATION,OPERATION&MAINTENANCEMANUALFORPOWERPLANT(Doc.No.:IME-TOT-001,Rev0)February2007株式会社三信SAMSHINLIMITED■HEADOFFICE&FACTORY63-6,DUJONG-DONG,CHONAN,CHUNGCHONGNAM-DO,KOREAPHONE:041-562-3401FAX:041-556-3401■SEOULOFFICERM#301,SAMYOUNGBLDG,549-3,BANPO-DONG,SEOCHO-KU,SEOUL,KOREAPHONE:02-534-6091FAX:041-556-3401使用说明书InstructionManual株式会社三信SamshinLimited1目录1.绪论……………………………………………………………………………………….22.阀门介绍………………………………………………………………………………….23.安装……………………………………………………………………………………….34.操作原理………………………………………………………………………………….45.操作……………………………………………………………………………………….266.维护(预防和纠正)……………………………………………………………………….277.拆卸……………………………………………………………………………………….378.检验……………………………………………………………………………………….499.重新组装………………………………………………………………………………….4910.备件和易损件………………………………………………………………………….5011.贮存建议……………………………………………………………………………….50CONTENTS1.INTRODUCTION……………………………………………………………………………….22.DESCRIPTIONOFEQUIPMENT……………………………………………………………….23.INSTALLATION……………………………………………………………………………….34.PRINCIPLESOFOPERATIONS……………………………………………………………….55.OPERATION………………………………………………………………………………….266.MAINTENANCE(PREVENTIVEANDCORRECTIVE)………………………………………….277.DISASSEMBLY……………………………………………………………………………….378.INSPECTION……………………………………………………………………………….499.REASSEMBLY……………………………………………………………………………….4910.RENEWALANDSPAREPARTS……………………………………………………………….5011.STORAGERECOMMENDATIONS…………………………………………………………….50使用说明书InstructionManual株式会社三信SamshinLimited21.绪论警告在安装,维护和操作该阀门以前,必须要阅读,理解该说明书,并按该说明书的要求进行操作;不然,操作人员可能会对阀门造成损坏或破坏。该说明书提供了三信产闸阀,截止阀,旋启式止回阀,升降式止回阀,连续排放阀,排泄阀等阀门的贮存、安装、操作及维护的方法,要按照要求严格执行。本说明书提供详实的安装设备的标准,以便对阀门进行安全、连续、正确以及有效的服务与维修。2.阀门介绍2.1闸阀该说明书描述了所有种类闸阀的安装及维护。每个阀门都是由阀体,阀盖,支架,阀杆及闸板等零部件组成。阀门安装在管道上以后,当处于完全打开的位置时,流体可以无阻止的流动;当处于关闭的位置时,阻止流体的流动。闸阀只能应用于是全开或全关的状态。2.2截止阀截止阀用于截止或调整流体两种状态,但是主要是在一定程度上应用于后者的场合。2.3旋启式止回阀旋启式止回阀是所有止回阀中昀简单的一种。在三信的设计当中,旋启式止回阀由铰链和阀瓣等组成,围绕铰链销旋启,它们一起安装在阀体内部。当安装在管线中后,该阀门可以起到防止流体反向流动的作用。2.4升降式止回阀升降式止回阀中主要的零部件为:阀体,阀瓣,阀盖。当安装在管线中后,该阀门可以起到防止流体反向流动的作用。2.5逆止(截止止回阀)阀/角式截止止回阀该类阀门只能允许流体沿一个方向流动,并阻止流体反方向流动。主要功能零部件包括阀体和阀瓣。在正常的流动状况下,流体压力作用在阀瓣底部,使得阀门打开,并允许流体通过。在反方向流动的状况下,流体压力作用在阀瓣顶部,使得阀瓣自动关闭,阻止流体通过阀门。1.INTRODUCTIONThismanualprovidesessentialinstructionsforthestorage,installation,operationandmaintenanceofSamshinGate,Globe,SwingCheck,LiftCheckValves,C.B.DvalvesandDrainvalvesaretobestrictlyobservedbyallpersonnelconcerned.Thepurposeofthismanualistoaidintheinstallationoftheequipmentandtoprovidestandardizedproceduresforachievingsafe,continuous,accurateandefficientservicingandrepair.2.DESCRIPTIONOFEQUIPMENT2.1GateValveAlloftheequipmentwhoseinstallationandmaintenancearedescribedinthismanual.EachvalveconsistsaBody,Bonnet,Yoke,StemandDisc,etc.Wheninstalledinpipelinethesevalvesareintendedtoallowunimpededflowwhentheyareinthefullyopenpositionandtopreventflowwhentheyareintheclosedposition.Gatevalvesareintendedtousedinthefullyopenorfullyclosedpositiononly.2.2GlobeValveGlobeValvesisusedeithertostoportoregulatetheliquidflow,butaremainlyusedtodothelattertoanydesireddegree.2.3SwingCheckValveSwingCheckValvesareamongthesimplestofallCheckValvedesigns.IntheSamshindesigntheyconsistofahingeanddiscassemblythatswingsaboutahingepinandisenclosedintheValveBody.WheninstalledinapipelinetheseValvesareintendedtobepreventflowinthereversedirection2.4LiftCheckValveTheMainPartsofLiftCheckValvearetheBody,Disc,Cover.WheninstalledinapipelinetheseValvesareintendedtobepreventflowinthereversedirection2.5Non-Return(StopCheck)Valve/AngleStopCheckValveThevalvesaredesignedtoallowedflowinonedirectionandpreventflowintheoppositedirection.Thefunctionpartsofthevalveincludethebodyanddisc.Duringnormalflowconditions,thehydraulicpressureactsonbottomofthediscforcingitopenandallowingtheWARNINGTheseinstructionsmustberead,understoodandfollowedbeforeattemptingtoinstall,maintainoroperatethisequipment.Otherwiseseverepersonalinjuryordamagetoequipmentmayresult.使用说明书InstructionManual株式会社三信SamshinLimited3fluidtopass.Duringreverseflowcondition,thehydraulicpressureactsonthetopofthediscforcingthediscautothevalveseatandpreventingthepassageoffluid.2.6排放阀该类阀门用于在发电厂开始运行阶段和管道中大量排氧时,在高压差作用下,具有非常强烈的侵蚀性及多重动作的排放过程。特别是昀近以来在核发电厂以及热发电厂需要的变化发电负荷的场合得到了重要的应用。因此,热电场已经有每日开停操作(DSS)的趋势。由于每日开停操作而高频率的开停,使得对排放阀造成的侵蚀损坏非常严重,需要更多的措施来防止这种损坏。3.安装3.1打开包装所有阀门必须检查是否存在由运输造成的损坏。该检查过程中发现的任何问题都应该记录在检验记录中。严重的损坏应该向三信通报,以便于确定阀门是否需要进行修理或更换。在打开包装时必须仔细,以免对阀门造成损坏或对操作人员造成伤害。3.2处置和准备警告由于可能会造成损坏,不要用驱动装置起吊整个阀门。可以用吊锁或吊带在阀体下部起吊阀门。拆下阀门两端部的保护装置。去除阀门和管道中诸如焊渣、氧化皮,油,油脂或脏物等所有异物。焊接端部必须用适合的溶剂进行恰当的清洁。3.3与管道进行连接尽管闸阀,截止阀,升降式止回阀,逆止阀,角式截止止回阀和排放阀通常水平或垂直安装,它们同时在任何倾斜角度下安装在管道中。警告在焊接或压力释放过程中,阀门必须处于部分开启状态,以免由于热膨胀和/或电火花而对闸板造成粘连。当焊接或压力释放结束后,应该重新使阀门处于全部关闭状态。应该按照确认的相应程序进行预热,焊接,和焊后热处理。如果可行,应该对焊接部位进行局部热处理,以免对其它的阀门零部件造成不必要的温升。2.6DrainValveThevalvesaresubjecttoaveryviolenterosionwithamultiplyingactionofadraindischargeathighpressuredifferenceatthetimeofstartingplantandascaleoxideejectionoccurringofteninpiping.Especially,animportanceisbeingputonanuclearpowergene
本文标题:阀门安装维护手册
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