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 STEAM高压蒸汽MS MEDIUM PRESSURE STEAM中压蒸汽LS SUPERHEATED LOW PRESSURE STEAM 2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 DRAIN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3GAS 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RE
4、FRIGERANT SYSTEMSBR BINARY REFRIGERANT二元制冷PR PROPYLENE REFRIGERANT丙烯冷剂4WATER 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 ABBR
5、EVIATION AND SERVICE SYMBOLS各种缩写和符号A AIR MOTOR空气马达ACC ACCESSIBLE可接近的 5ATM 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CONN 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 FLA
6、NGE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 FLOW6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
7、公用工程接口LINESMAIN LINE主线SECONDARY LINE副线UNDERGROUND OR BURY地下或隐藏ELECTRICALLY TRACED7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
8、责任分界点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8NOZZLE OR PIPE WITH BLIND FLANGE带盲法兰的喷嘴或管线SPACER FOR BLIND盲管位置NORMALLY 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 (WELD
9、ED)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 CONNECTION9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TRE
10、NCH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 NUMBER10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CHECK VALVE止逆阀STOP CHECK VALVE(BOILER NON-RETURN VALVE)带手轮止逆阀THREE 0R FOUR VALVE
