常见的PID图例缩写符号

1、LINESERVICEIDENTIFICATIONSYMBOL符号IAPADASTEAMAND蒸汽和凝液系统SERVICE帮助AIRSYSTEMS空气系统INSTRUMENTAIR仪表风PLANTAIR工厂风烧焦空气CONDENSATESYSTEMSHCHIGHPRESSURECONDENSATE高压蒸汽凝液MCMEDIUMPRESSURECONDENSATE中压蒸汽凝液LCLOWPRESSURECONDENSATE低压蒸汽凝液SCSURFACECONDENSATE表面凝液DSDILUTIONSTEAM稀释蒸汽HSHIGHPRESSURESTEAM高压蒸汽MSMEDIUMPRESSURESTE

2、AM中压蒸汽LSSUPERHEATEDLOWPRESSURESTEAM过热低压蒸汽PSSATURATEDLOWPRESSURESTEAM1 /25饱和低压蒸汽SHSSUPERHIGHPRESSURESTEAM超高压蒸汽DRAINSYSTEMS排放系统CDCHEMICALDRAIN化污LDLIQUIDDRAIN液体排放NDNON-CONTAMINATEDPOLLUTIONDRAIN无污染排放ODOILYDRAIN油污EXHAUSTANDVENTSYSTEMSAVATMOSPHERICVENT(NOTFROMPSV)通大气(不从安全阀)SVSAFETYVALVETOATMOSPHERE安全伐排大气

3、FLARESYSTEMS火炬系统DFDRYFLARE干火炬WFWETFLARE湿火炬GASSYSTEMS气体系统FGFUELGAS燃料气HGHYDROGEN氢气2 /25NGNITROGEN氮气SPECIALLIQUIDSYSTEMS特殊液体系统CLCAUSTIC腐蚀性QOQUENCHOIL急冷油SOSEALOIL密封油WOWASHINGOIL冲洗油(压缩机)PROCESSSERVICE(NORMAL)PPROCESS工艺REFRIGERANTSYSTEMSBRBINARYREFRIGERANT二元制冷PRPROPYLENEREFRIGERANT丙烯冷剂WATERSYSTEMS水系统BFWBO

4、ILERFEEDWATER锅炉给水FWFIREWATER消防水IWINTERMEDIATEWATER二次水CWRCOOLINGWATERRETURN冷却水回水3 /25CWSCOOLINGWATERSUPPLY冷却水PWPOLISHEDWATER工艺水QWQUENCHWATER急冷水UWUTILITYWATER工业水WWWASTEWATER废水SYMBOLSMISCELLANEOUSABBREVIATIONANDSERVICE各种缩写和符号MOTORAIRA空气马达ACCESSIBLEACC可接近的ATMOSPHEREATM大气LIMITBATTERYBL界区SHUT-OFFTIGHTBTSB

5、UBBLE缓慢紧密切断BYVENDORBV由供应商提供CONNECTIONCONN连接CLOSEDCARSEALCSC关闭锁定OPENCARCSOSEAL打开锁定4/25DECDETAILENGINEERINGCONTRACTOR工程承包商详细资料EORENDOFRUN运行结束SOREWEYEWASH洗眼FLGFLANGE法兰LCLOCKEDCLOSED锁定关闭LOLOCKEDOPEN锁定打开NCNORMALLYCLOSED正常情况下关闭NNFNORMALLYNOFLOW正常情况下无流量NONORMALLYOPEN正常情况下打开SSAMPLECONNECTION取样点SCSAMPLECONNE

6、CTIONWITHCOOLER连接冷却器的取样点RUNSTARTOFSOR开始运行STRAINERSR过滤器SHOWERSAFETYSS安全喷淋DRIPTLINETRAP5/25疏水器TSOTIGHTSHUTOFF密闭切断UCUTILITYCONNECTION公用工程接口LINESMAINLINE主线SECONDARYLINE副线UNDERGROUNDORBURY地下或隐藏ELECTRICALLYTRACED电缆线SPECIALTRACED特殊管线STEAMTRACED蒸汽伴热JACKETED夹套PACKAGEDEQUIPBOUNDARY成套设备分界线BATTERY界区分界线FUTURE未来M

7、ATERIALLIMITSPECBOUNDARYBREAK材料规格分界点DESIGNBREAK设计分界点6/25BELOWGROUNDLINERISINGABOVEGRADE地管伸出点BREAKOFREPONSIBILITY责任分界点ITEMSMISCELLANEOUS各种细节CONNECTIONOUTROD（FLUSHING）CONNECTIONCLEANOUT清理接口（冲洗）SPOOLABLEREMOV可拆除短管FLANGEWITHBLINDPIPENOZZLEOR带盲法兰的喷嘴或管线BLINDSPACERFOR盲管位置CLOSEDNORMALLY正常情况下关闭OPENNORMALLY正常

8、情况下打开BFIGUREB图BLINDREVERSIBLE字盲板8SWAGEORIFICE孔板JOINTFLANGEDINSULATED保温法兰连接（WELDED）CAPPIPE管帽（焊接）（SCREWED）PIPECAP7/25.管帽（法兰）REDUCER变径管T-STRAINERT型过滤器PERMANENTY-STRAINER（WITHVALVE）带阀门Y型过滤器TEMPORARYSTRAINER临时过滤器HOSECONNECTION软管接口SAMPLECONNECTION取样口*-SERVICESYMBOL符号说明SEQUENCENUMBER序列号OPENDRAINHUB敞口集液器MAT

9、ERIALBALANCESTREAMNUMBER物流号CONTINUTYARROW延续箭头INITIALFEED初始进料GRADE等级TRENCH地沟8/25.LINEIDENTIFICATION管线说明INSULATIONCODE保温代码MATERIALSPECIFICATION材质BRANCHIDENTIFIER分支标识SEQUENCENUMBER管线号PROCESSSECTIONAREA(MAYBEDIGIT)SINGLE工艺区SYMBOLSERVICELINE管线符号说明SIZELINE管线尺寸ALVESVALVEVGATE闸阀ALVEBUTTERFLYV蝶阀ALVEDIAPHRAGM

10、V隔膜阀ALVEVGLOBE球阀ALVENEEDLEV针型阀ALVEVPLUG截止阀ALVEBALLV9/25球阀CHECKVALVE止逆阀STOPCHECKVALVE(BOILERNON-RETURNVALVE)带手轮止逆阀THREE0RFOURVALVE三通或四通阀MULTIPORTPLUG多向切断阀ANGLEVALVE角阀DUALTANDEMBLOWNDOWNVALVES两段排污阀RANTYPEVALVER型阀T-TYPEGLOBEVALVET型球阀AUTOMATICRECIRCULATIONVALVE自动再循环阀INTERLOCKEDVALVES(MECHANICALLINK)机械联动

11、阀QUICKOPENINGORCLOSINGVALVE快速开关阀VALVEWITHBODYCAVITYRELIEFBLEEDBODYORCONNECTION带有排放阀的阀门DAMPER挡板ABBREVIATIONAPPROPRIATE合适的缩写10/25.SLIDEGATEVALVE滑动闸阀EQUIPMENTIDENTIFACATION设备符号SUPPLIEDWITHVENDOREQUIPMENT供应商提供的设备SPARE(A,B,C,ETCUSEDIFPARALLELUNITS)同一设备的编号NUMBERSEQUENCE序歹3NUMBERAREA区号ACCOUNTOFEQUIPMENTCOD

12、E设备代码DESIGNATIONUNIT单元名称ETHYLENEE-乙烯HYDROGENATIONH-DPG汽油加氢SITE&OFFU-UTILITY公用工程ANDPIPINGSPECIALTYITEMSEQUIPMENTMISCELLANEOUS特殊管项和各种设备AREITEMSIDENTIFIEDSPECIALTYALLPIPING所有特殊管线有以下注明ASWAY(SEQUENCENUMBERNUMBEREDSAMEININSTRUMENT)序列号(与仪表排序相同)11/25.EXHAUSTHEAD负呀总管ATOMPHERICVENTWITHWEATHERCAP防雨放空管DUPLE

13、XSTRAINER相同的过滤器PERMANENTBASKETSTRAINER提篮式过滤器FLEXIBLEHOSE金属软管EXPANSIONJOINT膨胀节INLINEMIXERSORVENTURITYPEHEATERDESUPER内嵌式混合器或文丘里型混合器SILENCER消音器EDUCTOREJECTOROR喷射器FILTER过滤器HOODFILTERWITH带罩过滤器(NON-PROCESS)TRAPCONDENSATE凝液疏水器PROTECTIONFIRE消防HYDRANTFIRE消防炮MONITORFIREHYDRANTWITH带监视器的消防栓12/25.FIREHYDRANTWITH

14、PUPPERCONNECTION消防栓HOSEHOUSE消防箱VALVEWITHINDICATORPOST带指示的阀MONITOR监视器EMIFELEVATEDPUMP泵CENTRIFUGAL离心泵METERINGORRECIPROCATING计量泵或往复式泵ROTARYGEAR,SCREW齿轮泵VERTICALSUMPPUMP立式污水泵VERTICALCANNEDPUMP(PFDONLYALLTYPES)泵LIQUIDRINGVACUUMPUMP水环式真空泵COMPRESSOR压缩机SINGLESTAGERECIPROCATINGMULTI-STAGERECIPROCATINGCENTRIF

15、UGAL离心式13/25.ROTARY旋转式BLOWERFAN鼓风机BLOWER(PFDONLYALLTYPES)鼓风机COMPRESSOR(PFDONLY)压缩机SCREW螺杆式DRIVER驱动装置ELECTRICMOTOR电动马达DIESELENGINE.ETC柴油发动机APPROPRIATEABBREVIATION相应的缩写AAIR空气DIESEL柴油HHYDRAULIC水力的MELECTRIC电气的STEAMTURBINE蒸汽涡轮EXPANDER扩大室14/25HEATEXCHANGER换热器SHELLANDTUBEHEATEXCHANGER管壳式换热器HORIZONTALSHELLA

16、NDTUBEHEATEXCHANGER水平式管壳式换热器VERTICALSHELLANDTUBEHEATEXCHANGER垂直式管壳式换热器SINGELSECTIONDOUBLEPIPEEXCHANGERTWOSECTIONDOUBLEPIPEEXCHANGERAIRCOOLER空冷器AIRCOOLER(PFDONLY)空冷器KETTLETYPEREBOILERORSTEAMGENERATORKETTLETYPEEXCHANGER(PFDONLY)GRAPHITEBLOCKTYPEEXCHANGERPLATEEXCHANGERDRAWINGIDENTIFICATION图形说明REVISIONN

17、O.修订号DRAWINGNO.图号AREANO.区号JOBNO.工号DRAWINGSIZEVESSELSANDFURNACES15/25.容器和炉子FLOATINGROOFTANK浮顶罐CONEROOFTANKWITHINTERNALCOIL带内盘管锥型顶罐COLUMN柱型PACKINGINTERNALBAFFLEVORTEXBREAKER旋风分离器CABINTYPEHEATERWITHEXTERNALCROSS-OVERSHORIZONALTYPEHEATERWITHINTERNALCROSSOVERS内部有交叉的水平加热管VESSELELEVATIONS离地面高度INSULATIONCOD

18、E保温代码DANTI-SWEATINSULATION防水保温EELECTRICALTRACINGFFULLHEATCONSERVATIONHNORMALHEATCONSERVATION一般保温MDUALSERVICEINSULATIONPPERSONNELPROTECTION防护人员SSPECIAL特殊的TSTEAMTRACING16/25.VACOUSTICAL听力的BREAKOFRESPONSIBILITYSYMBOLFORLOCATIONOFTIE-INPOINTCONNECTEDUNEWETHYLENESTORAGEAREA乙烯新区的VOSBL(ONNORTHSIDERACK)WOSB

19、L(ONMAINRACKINFRONTOFNEWHEATER)XOSBL(ONSOUTHSIDERACK)YOSBL(COOLINGWATER)EEXISTINGAREADDPGAREAC4C4HYDROAREAD(W)DPGAREAANDTHROUGHTHETIE-INPOINT(W)ONTHERACKC4(U)C4HYDROAREAANDTHROUGHTHETIE-INPOINT(U)ONTHERACKE(W)EXISTINGAREAANDTHROUGHTIE-INPOINT(W)ONTHERACKE(X)EXISTINGAREAANDTHROUGHTIE-INPOINT(X)ONTHER

20、ACKGENERALNOTES1.FORINSTRUMENTATIONSYMBOLSSEEDWGNO.0005B仪表符号参阅图DWGNO.0005B2. FLOWDIAGRAMSAREDIAGRAMATICONLY。ROUTINGOFPIPELINESMUSTBEINVESTIGATEDFORVENTINGOFHIGHPOINTSOFPIPINGANDDRAININGOFLOWPOINTSOFPIPINGANDEQUIPMENT.THESEPOINTSARENOTNORMALLYSHOWNONP&IFLOWDIAGRAM3. THECONTROLVALVEASSEMBLYWILLHAV

21、EA3/4"DRAINVALVELOCATEDONTHEUPSTREAMSIDEOFTHECONTROL17/25VALVE在调节阀的上游应有一个3/4英寸的就地排放阀。.4. VESSELINTERNALS,FURNACECOILS,HEADERS,ANDMANIFOLDSARESHOWNTOTHEEXTENTREQUIREDFORCLARITY.容器内部、炉管等在必要的地方标明。5. ALLOWANCEISTOBEMADEFORTEMPORARYSTRAINERSINSUCTIONLINESOFALLPUMPSANDCOMPRESSOR11/2"ANDLARGER.YT

22、YPESTRAINERSARETOBEPROVIDEDINSUCTIONLINES11/2"ANDSMALLER.在所有泵、压缩机的吸入管线上均装有11/2"或更大的临时过滤器，"Y"型过滤器则被装在11/2"或更小的管线上。6. /TOATMATSAFELOCATION/MEANS3000mmABOVEANYPLATFORMORSTAIRWAYWITHINAN8000mmRADIUS.2. 9mmWEEPHOLESHALLBEPROVIDEDINLOWPOINTSOFRELIEFVALVEDISCHARGESVENTINGTOATMOSPHE

23、RE.在排大气阀的低点有一个9mm的孔来排出液体。8. BATTERYLIMITORROOTVALVESARENOTNECESSARILYSHOWNONPROCESSP&IDS.THESESHOWNBESHOWNASREQUIREDONDISTRIBUTIONAND/ORUTILITYP&IDSDURINGDETAILEDDESIGN.界区阀和根部阀在工艺流程图中不一定有，但在公用工程的P&IDS图中会有详细资料。9. PUMPSEALFLUSHESANDCOOLINGDETAILSTOBEPROVIDEDBYDETAILEDENGINEERINGCONTRACTOR.

24、FORSPECIALREQUIREMENTS,SEEPUMPDATASHEETSORSCHEDULES.泵的密封和冷却系统由工程承包商提供，有特殊要求请查看泵的曲线和表。10. ALLELEVATIONSSHOWNAREPRELIMINARY,ELEVATIONSARETOBEFINALIZEDDURINGDETAILEDENGINEERING,TOWERANDDRUMELEVATIONSAREBASEDONREBOILERHYDRAULICSORPUMPNPSHREQUIRENENTS.18/25.11. BLOCKVALVESFORALLINSTRUMENTSSUCHASPLPGLIAND

25、LGARENOTINDICATEDANDTHESEBLOCKVALVESARE3/4",IFNOTINDICATED.12.RUNNINGSIGNALSFORALLMOTORARENOTINDICATED.所有的马达运行信号不被显示。LINEDESIGATIONSCONNECTIONTOPROCESS,MECHANICALLINEORINSTRUMENTINPUTCAPILLARYTUBING(FILLEDSYSTEM)PNEUMATICSIGNALELECTRICALSIGNALORSOFTWARESIGNALHYDRAULIC(LIQOID)SIGNALELECTROMAGNET

26、ICORSONICSIGNAL(INCLUDINGRADIOWAVES,NUCLEARRADIATION,HEATANDLIGHT)INSTRUMENTAIRSUPPLYINSTRUMENTLINEPURGE*-PURGEMEDIUM(LINESERVICEIDENTIFICATIONORASNOTED)TEMPERATUREINSTRUMENTSSINGLETHERMOCOUPLE,RTD,GAUGEORWELL,*-RTD(IFRESISTANCETEMPERATUREDETECTOR)DUPLEXTHERMOCOUPLEINONEWELLMULTI-ELEMENTTHERMOCOUPLE

27、FOR19/25DIFFERENTELEVATIONSORZONES(INDICATEFIRSTANDLASTTAGNUMBERSORTAGNUMBERSUFFIXES)TEMPERATUREREGULATOR温度调节阀PRESSUREINSTRUMENTS压力调节器CONTROLLINGSIDEPRESSUREREDUCINGREGULATOR-SELF-CONTAINEDPRESSUREREGULATORWITHEXTERNALPRESSURETAPDEFFERENTIALPRESSUREREDUCINGWITHEXTERNALANDTAPSEXTERNALPRESSUREALVERELI

28、EFVSAFETYSAFETYACUUMPRESSUREANDVALVERELIEFVALVEVOPERATEDSAFETYRELIEFPILOTCOVERMANHOLERELIEVINGRELIEFORVACUUMPRESSUREPRESSSET设定压力DISKRELIEFRUPTUREPRESSUREDISKRELIEFRUPTUREVACUUMINSTRUMENTSFLOW流量计ORIFICERESTRICTIONORIFICEPLATEOR孔板或限流孔FITTINGCHANGEORIFICEPLATEINQUICKNOZZLETUBEORFLOWVENTURLFLOW文丘里流量计或喷嘴

29、INSTRUMENTTYPEINSERTIONFLOW20/25.插入型流量计FLUMEWEIRROATMETER转子流量计FLOWSTRAIGHTENINGVANESEXTERNALTYPEFLOWINSTRUMENTSPECIFYTYPEOUTSIDEBUBBLEIN-LINEFLOWINSTRUMENTSPECIFYTYPEOUTSIDEBUBBLELEVELINSTRUMENTS液位计EXTERNALLEVELINSTRUMENT外部液位计(玻璃板、浮筒式)INTERNALFLOATTYPELEVELINSTRUMENT浮筒式液位计BUBBLETYPELEVELINSTRUMENTRA

30、DIATIONORSONICLEVELINSTRUMENTFLOATANDTAPETYPELEVELINDICATORORTRANSMITTERFORSTORAGETANKSOTHERLEVELINSTRUMENTSSPECIFYTYPEOUTSIDEBUBBLELEVELREGULATORWITHMECHANICALLINKAGECONTROLVALVESGLOBEVALVE球阀ANGLE角阀BUTTERFLY蝶型21/25.BALL.PLUGORDISC球、塞子、圆盘DIAPHRAGM(SAUNDERS)隔膜OTHER(SPECIFYNEXTTOSYMBOL)其他的(在下一个符号中详细说明

31、)THREEWAYGLOBE三通球型调节阀FOURWAYVALVE四通调节阀ACTUATORSSPRINGANDDIAPHRAGM弹簧和隔膜DIFFERENTIALDIAPHRAGM微分隔膜PISTONTYPE-SINGLEACTINGPISTONTYPE-DOUBLEACTINGELECTRICMOTOR电动马达SOLENOID螺线管ELECTRO-HYDRAULICGASMOTOR气动马达MANUALHANDWHEEL手轮ACCESSORIESSIDEMOUNTEDHANDWHEELMANUALRESETREMOTERESET22/25ADDITIONALINFORMATIONBODYSI

32、DE阀体尺寸BTSBUBBLETIGHTSHUT-OFFTSOTIGHTSHUT-OFFAIRFAILUREPOSITIONFOFAILOPEN故障时打开FCFAILCLOSE故障时关闭FL(O)FAILLOCKED(LASTPOSITION)VALVEOPENSONDECREASINGCONTROLSIGNALFL(C)FAILLOCKED(LASTPOSITION)VALVECLOSESONDECREASINGCONTROLSIGNALSPLITRANGEDESIGNATIONAFIRSTVALVETORESPONDTOINCREASINGCONTROLSIGNALBSECONDVALVETORESPONDTOINCREASINGCONTROLSIGN