1、1LINE SERVICE IDENTIFICATIONSYMBOL SERVICE 符号 帮助AIR SYSTEMS空气系统IA INSTRUMENT AIR仪表风PA PLANT AIR工厂风DA 烧焦空气STEAM AND CONDENSATE SYSTEMS蒸汽和凝液系统HC HIGH PRESSURE CONDENSATE高压蒸汽凝液MC MEDIUM PRESSURE CONDENSATE中压蒸汽凝液LC LOW PRESSURE CONDENSATE低压蒸汽凝液SC SURFACE CONDENSATE表面凝液DS DILUTION STEAM稀释蒸汽HS HIGH PRESSU
2、RE SREAM高压蒸汽MS MEDIUM PRESSURE STEAM中压蒸汽LS SUPERHEATED LOW PRESSURE STEAM 过热低压蒸汽PS SATURATED LOW PRESSURE STEAM饱和低压蒸汽SHS SUPER HIGH PRESSURE STEAM超高压蒸汽DRAIN SYSTEMS排放系统CD CHEMICAL DRAIN化污LD LIQUID DRAIN液体排放ND NON-CONTAMINATED POLLUTION DRAIN2无污染排放OD OILY DRAIN油污EXHAUST AND VENT SYSTEMSAV ATMOSPHERIC
3、 VENT (NOT FROM PSV)通大气（不从安全阀）SV SAFETY VALVE TO ATMOSPHERE安全伐排大气FLARE SYSTEMS火炬系统DF DRY FLARE 干火炬 WF WET FLARE湿火炬GAS SYSTEMS气体系统FG FUEL GAS燃料气HG HYDROGEN氢气NG NITROGEN氮气SPECIAL LIQUID SYSTEMS特殊液体系统CL CAUSTIC腐蚀性QO QUENCH OIL急冷油SO SEAL OIL密封油WO WASHING OIL冲洗油（压缩机）PROCESS SERVICE (NORMAL)P PROCESS工艺REF
4、RIGERANT SYSTEMSBR BINARY REFRIGERANT二元制冷PR PROPYLENE REFRIGERANT3丙烯冷剂WATER SYSTEMS水系统BFW BOILER FEED WATER 锅炉给水FW FIRE WATER消防水IW INTERMEDIATE WATER二次水CWR COOLING WATER RETURN冷却水回水CWS COOLING WATER SUPPLY冷却水PW POLISHED WATER工艺水QW QUENCH WATER急冷水UW UTILITY WATER工业水WW WASTE WATER废水MISCELLANEOUS ABBRE
5、VIATION AND SERVICE SYMBOLS各种缩写和符号A AIR MOTOR空气马达ACC ACCESSIBLE可接近的 ATM ATMOSPHERE大气 BL BATTERY LIMIT界区BTS BUBBLE TIGHT SHUT-OFF缓慢紧密切断BV BY VENDOR 由供应商提供4CONN CONNECTION连接CSC CAR SEAL CLOSED关闭锁定CSO CAR SEAL OPEN打开锁定DEC DETAIL ENGINEERING CONTRACTOR工程承包商详细资料 EOR END OF RUN 运行结束SOREW EYEWASH洗眼FLG FLAN
6、GE法兰LC LOCKED CLOSED锁定关闭LO LOCKED OPEN锁定打开NC NORMALLY CLOSED正常情况下关闭NNF NORMALLY NO FLOW正常情况下无流量NO NORMALLY OPEN正常情况下打开S SAMPLE CONNECTION取样点SC SAMPLE CONNECTION WITH COOLER连接冷却器的取样点SOR START OF RUN开始运行SR STRAINER过滤器SS SAFETY SHOWER安全喷淋T LINE DRIP TRAP 疏水器TSO TIGHT SHUT OFF密闭切断UC UTILITY CONNECTION公用
7、工程接口5LINESMAIN LINE主线SECONDARY LINE副线UNDERGROUND OR BURY地下或隐藏ELECTRICALLY TRACED电缆线SPECIAL TRACED特殊管线STEAM TRACED蒸汽伴热JACKETED夹套PACKAGED EQUIP BOUNDARY成套设备分界线BATTERY LIMIT BOUNDARY界区分界线FUTURE未来MATERIAL SPEC BREAK材料规格分界点DESIGN BREAK设计分界点BELOW GROUND LINE RISING ABOVE GRADE地管伸出点BREAK OF REPONSIBILITY责任
8、分界点MISCELLANEOUS ITEMS各种细节ROD OUT CONNECTIONCLEAN OUT CONNECTION (FLUSHING)清理接口（冲洗）REMOVABLE SPOOL可拆除短管NOZZLE OR PIPE WITH BLIND FLANGE带盲法兰的喷嘴或管线SPACER FOR BLIND盲管位置6NORMALLY CLOSED正常情况下关闭NORMALLY OPEN正常情况下打开FIGURE BB 图REVERSIBLE BLIND8 字盲板ORIFICE SWAGE孔板INSULATED FLANGED JOINT保温法兰连接PIPE CAP (WELDED
9、)管帽（焊接）PIPE CAP (SCREWED)管帽（法兰）REDUCER变径管T-STRAINERT 型过滤器PERMANENT Y-STRAINER (WITH VALVE)带阀门 Y 型过滤器TEMPORARY STRAINER临时过滤器HOSE CONNECTION软管接口SAMPLE CONNECTION取样口*-SERVICE SYMBOL符号说明SEQUENCE NUMBER序列号OPEN DRAIN HUB敞口集液器MATERIAL BALANCE STREAM NUMBER物流号CONTINUTY ARROW延续箭头INITIAL FEED初始进料GRADE等级TRENCH
10、7地沟LINE IDENTIFICATION管线说明INSULATION CODE保温代码MATERIAL SPECIFICATION材质BRANCH IDENTIFIER分支标识SEQUENCE NUMBER管线号PROCESS SECTION AREA(MAY BE SINGLE DIGIT)工艺区LINE SERVICE SYMBOL管线符号说明LINE SIZE管线尺寸VALVESGATE VALVE闸阀BUTTERFLY VALVE蝶阀DIAPHRAGM VALVE隔膜阀GLOBE VALVE球阀NEEDLE VALVE针型阀PLUG VALVE截止阀BALL VALVE球阀CHEC
11、K VALVE止逆阀STOP CHECK VALVE(BOILER NON-RETURN VALVE)带手轮止逆阀THREE 0R FOUR VALVE8三通或四通阀MULTI PORT PLUG多向切断阀ANGLE VALVE角阀DUAL TANDEM BLOWNDOWN VALVES两段排污阀RAN TYPE VALVER 型阀T-TYPE GLOBE VALVET 型球阀 AUTOMATIC RECIRCULATION VALVE自动再循环阀INTERLOCKED VALVES(MECHANICAL LINK)机械联动阀QUICK OPENING OR CLOSING VALVE快速开关
12、阀VALVE WITH BODY CAVITY RELIEF OR BODY BLEED CONNECTION带有排放阀的阀门DAMPER挡板 APPROPRIATE ABBREVIATION合适的缩写SLIDE GATE VALVE滑动闸阀EQUIPMENT IDENTIFACATION设备符号SUPPLIED WITH VENDOR EQUIPMENT供应商提供的设备SPARE(A,B,C,ETC USED IF PARALLEL UNITS)同一设备的编号SEQUENCE NUMBER序列号AREA NUMBER区号EQUIPMENT CODE OF ACCOUNT设备代码UNIT DE
13、SIGNATION单元名称E ETHYLENE9乙烯H - DPG HYDROGENATION汽油加氢U - UTILITY & OFF SITE公用工程PIPING SPECIALTY ITEMS AND MISCELLANEOUS EQUIPMENT特殊管项和各种设备ALL PIPING SPECIALTY ITEMS ARE IDENTIFIED所有特殊管线有以下注明SEQUENCE NUMBER ( NUMBERED IN SAME WAY AS INSTRUMENT )序列号（与仪表排序相同）EXHAUST HEAD负呀总管ATOMPHERIC VENT WITH WEATHER C
14、AP防雨放空管DUPLEX STRAINER相同的过滤器PERMANENT BASKET STRAINER提篮式过滤器FLEXIBLE HOSE金属软管EXPANSION JOINT膨胀节INLINE MIXERS OR VENTURI TYPE DESUPER HEATER内嵌式混合器或文丘里型混合器SILENCER消音器EJECTOR OR EDUCTOR喷射器FILTER过滤器FILTER WITH HOOD带罩过滤器CONDENSATE TRAP (NON-PROCESS)凝液疏水器FIRE PROTECTION10消防FIRE HYDRANT消防炮FIRE HYDRANT WITH
15、MONITOR带监视器的消防栓FIRE HYDRANT WITH PUPPER CONNECTION消防栓HOSE HOUSE消防箱VALVE WITH INDICATOR POST带指示的阀MONITOR 监视器EM IF ELEVATEDPUMP泵CENTRIFUGAL离心泵METERING OR RECIPROCATING计量泵或往复式泵ROTARY GEAR ,SCREW 齿轮泵VERTICAL SUMP PUMP立式污水泵VERTICAL CANNEDPUMP (PFD ONLY ALL TYPES)泵LIQUID RING VACUUM PUMP水环式真空泵COMPRESSOR压缩
16、机SINGLE STAGE RECIPROCATINGMULTI-STAGE RECIPROCATING11CENTRIFUGAL离心式ROTARY旋转式BLOWER FAN鼓风机BLOWER (PFD ONLY ALL TYPES)鼓风机COMPRESSOR (PFD ONLY)压缩机SCREW螺杆式DRIVER驱动装置ELECTRIC MOTOR电动马达DIESEL ENGINE .ETC柴油发动机APPROPRIATE ABBREVIATION相应的缩写A AIR空气D DIESEL柴油H HYDRAULIC水力的M ELECTRIC电气的 STEAM TURBINE蒸汽涡轮EXPAND
17、ER扩大室HEAT EXCHANGER换热器SHELL AND TUBE HEAT EXCHANGER12管壳式换热器HORIZONTAL SHELL AND TUBE HEAT EXCHANGER水平式管壳式换热器VERTICAL SHELL AND TUBE HEAT EXCHANGER垂直式管壳式换热器SINGEL SECTION DOUBLE PIPE EXCHANGERTWO SECTION DOUBLE PIPE EXCHANGERAIR COOLER空冷器AIR COOLER (PFD ONLY)空冷器KETTLE TYPE REBOILER OR STEAM GENERATOR
18、KETTLE TYPE EXCHANGER (PFD ONLY)GRAPHITE BLOCK TYPE EXCHANGERPLATE EXCHANGERDRAWING IDENTIFICATION图形说明REVISION NO.修订号DRAWING NO.图号AREA NO.区号JOB NO.工号DRAWING SIZEVESSELS AND FURNACES容器和炉子FLOATING ROOF TANK浮顶罐CONE ROOF TANK WITH INTERNAL COIL13带内盘管锥型顶罐COLUMN柱型PACKINGINTERNAL BAFFLEVORTEX BREAKER旋风分离器C
19、ABIN TYPE HEATER WITH EXTERNAL CROSS-OVERSHORIZONAL TYPE HEATER WITH INTERNAL CROSSOVERS内部有交叉的水平加热管VESSEL ELEVATIONS离地面高度INSULATION CODE保温代码D ANTI-SWEAT INSULATION防水保温E ELECTRICAL TRACINGF FULL HEAT CONSERVATIONH NORMAL HEAT CONSERVATION一般保温M DUAL SERVICE INSULATIONP PERSONNEL PROTECTION防护人员S SPECIA
20、L特殊的T STEAM TRACINGV ACOUSTICAL听力的BREAK OF RESPONSIBILITYSYMBOL FOR LOCATION OF TIE-IN POINT CONNECTED14U NEW ETHYLENE STORAGE AREA乙烯新区的V OSBL (ON NORTH SIDE RACK)W OSBL (ON MAIN RACK IN FRONT OF NEW HEATER)X OSBL (ON SOUTH SIDE RACK)Y OSBL (COOLING WATER)E EXISTING AREAD DPG AREAC4 C4 HYDRO AREAD(W
21、) DPG AREA AND THROUGH THE TIE-IN POINT(W) ON THE RACKC4(U) C4 HYDRO AREA AND THROUGH THE TIE-IN POINT(U) ON THE RACKE(W) EXISTING AREA AND THROUGH TIE-IN POINT(W) ON THE RACKE(X) EXISTING AREA AND THROUGH TIE-IN POINT(X) ON THE RACKGENERAL NOTES1. FOR INSTRUMENTATION SYMBOLS SEE DWG NO.0005B仪表符号参阅图
22、 DWG NO.0005B2. FLOW DIAGRAMS ARE DIAGRAMATIC ONLY 。 ROUTING OF PIPELINES MUST BE INVESTIGATED FOR VENTING OF HIGH POINTS OF PIPING AND DRAINING OF LOW POINTS OF PIPING AND EQUIPMENT . THESE POINTS ARE NOT NORMALLY SHOWN ON P&I FLOW DIAGRAM3. THE CONTROL VALVE ASSEMBLY WILL HAVE A 3/4 DRAIN VALVE LO
23、CATED ON THE UPSTREAM SIDE OF THE CONTROL VALVE在调节阀的上游应有一个 3/4 英寸的就地排放阀。.154. VESSEL INTERNALS, FURNACE COILS , HEADERS, AND MANIFOLDS ARE SHOWN TO THE EXTENT REQUIRED FOR CLARITY.容器内部、炉管等在必要的地方标明。5. ALLOWANCE IS TO BE MADE FOR TEMPORARY STRAINERS IN SUCTION LINES OF ALL PUMPS AND COMPRESSOR 1 1/2 A
24、ND LARGER . YTYPE STRAINERS ARE TO BE PROVIDED IN SUCTION LINES 1 1/2 AND SMALLER在所有泵、压缩机的吸入管线上均装有 1 1/2或更大的临时过滤器，Y型过滤器则被装在 1 1/2或更小的管线上。6. TO ATM AT SAFE LOCATIONMEANS 3000mm ABOVE ANY PLATFORM OR STAIRWAY WITHIN AN 8000mm RADIUS.7. 9mm WEEP HOLE SHALL BE PROVIDED IN LOW POINTS OF RELIEF VALVE DISC
25、HARGES VENTING TO ATMOSPHERE.在排大气阀的低点有一个 9mm 的孔来排出液体。8. BATTERY LIMIT OR ROOT VALVES ARE NOT NECESSARILY SHOWN ON PROCESS P&IDS. THESE SHOWN BE SHOWN AS REQUIRED ON DISTRIBUTION AND/OR UTILITY P&IDS DURING DETAILED DESIGN.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. PUMP SEAL FLUSHES AND COOLING DET
26、AILS TO BE PROVIDED BY DETAILED ENGINEERING CONTRACTOR. FOR SPECIAL REQUIREMENTS, SEE PUMP DATA SHEETS OR SCHEDULES.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. ALL ELEVATIONS SHOWN ARE PRELIMINARY, ELEVATIONS ARE TO BE FINALIZED DURING DETAILED ENGINEERING, TOWER AND DRUM ELEVATIONS ARE BASED ON REBOILER H
27、YDRAULICS OR PUMP NPSH REQUIRENENTS.11. BLOCK VALVES FOR ALL INSTRUMENTS SUCH AS PLPGLI AND LG ARE NOT INDICATED AND THESE BLOCK VALVESARE 3/4, IF NOT INDICATED.12. RUNNING SIGNALS FOR ALL MOTOR ARE NOT INDICATED. 所有的马达运行信号不被显示。16LINE DESIGATIONSCONNECTION TO PROCESS, MECHANICALLINE OR INSTRUMENT IN
28、PUTCAPILLARY TUBING(FILLED SYSTEM)PNEUMATIC SIGNALELECTRICAL SIGNAL ORSOFTWARE SIGNALHYDRAULIC (LIQOID) SIGNAL ELECTROMAGNETIC OR SONIC SIGNAL(INCLUDING RADIO WAVES, NUCLEAR RADIATION,HEAT AND LIGHT)INSTRUMENT AIR SUPPLYINSTRUMENT LINE PURGE*-PURGE MEDIUM(LINE SERVICE IDENTIFICATION OR AS NOTED)TEMP
29、ERATURE INSTRUMENTSSINGLE THERMOCOUPLE, RTD,GAUGE OR WELL,* - RTD (IF RESISTANCE TEMPERATURE DETECTOR)DUPLEX THERMOCOUPLEIN ONE WELLMULTI-ELEMENT THERMOCOUPLE FOR17DIFFERENT ELEVATIONS OR ZONES(INDICATE FIRST AND LAST TAGNUMBERS OR TAG NUMBER SUFFIXES)TEMPERATURE REGULATOR温度调节阀PRESSURE INSTRUMENTS压力
30、调节器CONTROLLING SIDEPRESSURE REDUCING REGULATOR-SELF-CONTAINEDPRESSURE REGULATOR WITH EXTERNAL PRESSURE TAPDEFFERENTIAL PRESSURE REDUCING WITH EXTERNAL AND EXTERNAL PRESSURE TAPSSAFETY RELIEF VALVEPRESSURE AND VACUUM SAFETYRELIEF VALVEPILOT OPERATED SAFETY RELIEF VALVERELIEVING MANHOLE COVERPRESSURE
31、OR VACUUM RELIEFSET PRESS设定压力PRESSURE RELIEF RUPTURE DISKVACUUM RELIEF RUPTURE DISKFLOW INSTRUMENTS流量计18ORIFICE PLATE OR RESTRICTION ORIFICE孔板或限流孔ORIFICE PLATE IN QUICK CHANGE FITTINGVENTURL FLOW TUBE OR FLOW NOZZLE文丘里流量计或喷嘴INSERTION TYPE FLOW INSTRUMENT插入型流量计FLUMEWEIRROATMETER转子流量计FLOW STRAIGHTENIN
32、G VANESEXTERNAL TYPE FLOW INSTRUMENT SPECIFY TYPEOUTSIDE BUBBLEIN-LINE FLOW INSTRUMENT SPECIFY TYPE OUTSIDE BUBBLELEVEL INSTRUMENTS液位计EXTERNAL LEVEL INSTRUMENT外部液位计（玻璃板、浮筒式）INTERNAL FLOAT TYPE LEVEL INSTRUMENT浮筒式液位计BUBBLE TYPE LEVEL INSTRUMENTRADIATION OR SONIC LEVEL INSTRUMENTFLOAT AND TAPE TYPE LE
33、VEL INDICATOR OR TRANSMITTER FOR STORAGE TANKSOTHER LEVEL INSTRUMENTS SPECIFY TYPE OUTSIDE BUBBLE 19LEVEL REGULATOR WITH MECHANICAL LINKAGECONTROL VALVESGLOBE VALVE球阀 ANGLE角阀BUTTERFLY蝶型BALL. PLUG OR DISC球、塞子、圆盘DIAPHRAGM（SAUNDERS）隔膜OTHER （SPECIFY NEXT TO SYMBOL）其他的（在下一个符号中详细说明）THREE WAY GLOBE三通球型调节阀F
34、OUR WAY VALVE四通调节阀ACTUATORSSPRING AND DIAPHRAGM弹簧和隔膜DIFFERENTIAL DIAPHRAGM微分隔膜PISTON TYPE - SINGLE ACTINGPISTON TYPE - DOUBLE ACTINGELECTRIC MOTOR电动马达SOLENOID螺线管ELECTRO-HYDRAULICGAS MOTOR气动马达MANUAL HANDWHEEL手轮20ACCESSORIESSIDE MOUNTED HANDWHEELMANUAL RESETREMOTE RESETADDITIONAL INFORMATIONBODY SIDE阀
35、体尺寸BTS BUBBLE TIGHT SHUT-OFFTSO TIGHT SHUT-OFFAIR FAILURE POSITIONFO FAIL OPEN故障时打开FC FAIL CLOSE故障时关闭FL(O) FAIL LOCKED(LAST POSITION) VALVE OPENS ON DECREASING CONTROL SIGNALFL(C) FAIL LOCKED(LAST POSITION) VALVE CLOSES ON DECREASING CONTROL SIGNALSPLIT RANGE DESIGNATIONA FIRST VALVE TO RESPOND TO I
36、NCREASING CONTROL SIGNALB SECOND VALVE TO RESPOND TO INCREASING CONTROL SIGNALMISCELLANEOUS ITEMS各种INLINE INSTRUMENTS21在线仪表FLAME ARRESTORCONTINUOUS DRAINEROPTIONAL VENT LINEEXCESS FLOW VALVEPROCESS STEAM TRAPANALYZERANALYTICAL COMPONENT OR PHYSICAL PROPERTYPURGING DETAILDIAPHRAGM SEALSPIPED CONNECTI
37、ONFLUSH MOUNTEDTRACINGCONVENTIONAL INSTRUMENTATIONDIGITAL INSTRUMENTATIONPUSHBOTTON , SWITCHES & LIGHTSINDICATING LIGHTPUSHBOTTONPUSHBOTTON WITH LIGHTSWITCHSWITCH WITH LIGHT(LIGHT INCLUDED FOR EACH PUSHBUTTON FUNCTION)HIGH/LOW OPEN/CLOSE22LIGHT DESIGNATIONMEASURED VARIABLEFUNCTIONBYP BY PASSHOA HAND
38、/OFF/AUTOMATICO/C OPEN/CLOSERESETS/S START/STOPTRIP TRIPNOTES1. FOR PIPING AND EQUIPMENT SYMBOLS , SEE DWG 0000542. THE INSTRUMENTATION REPRESENTATION ON P&I FLOW DIAGRAMS, IN GENERAL , CONSISTS OF A SINGLE OR SEVERAL BALOONS SUFFICIENT FOR FUNCTIONAL DEFINATION, COMPLEX OR UNUASUAL LOOPS ARE DIPECT
39、ED WITH INDIVIDUAL COMPONENT BALOONS AS REQUIRED FOR CLARITY.3. ALL CONTROL ROOM INSTRUMENTS ARE LOCATED IN THE CENTRAL CONTROL ROOM UNLESS OTHERWISE NOTES.4. NEEDLE VALVE AND CHECK VALVE ARE INTEGRAL PART OF ROTAMETER.5. AN INSTRUMENT NUMBER WITH AN X SUFFIX OR AN X IN PLACE OF THE LOOP NO. DENOTES THE INSTRUMENT IS FURNISHED AS PART OF AN EQUIPMENT PACKAGE.
