LINE SERVICE IDENTIFICATION
SYMBOL SERVICE 符号 帮助
AS 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 PRESSURE 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 DRAIN 无污染排放 OD OILY DRAIN油污
EXHAUST AND VENT SYSTEMS
AV ATMOSPHERIC 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
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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
REFRIGERANT SYSTEMS
BR BINARY REFRIGERANT 二元制冷 PR PROPYLENE REFRIGERANT 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 ABBREVIATION 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 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 SOR Star Of Run 运行开始
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EW EYEWASH 洗眼 FLG FLANGE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公用工程接口
LINES
MAIN 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责任分界点
MISCELLANEOUS ITEMS各种细节 ROD OUT CONNECTION连接杆
CLEAN 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
NORMALLY CLOSED正常情况下关闭
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NORMALLY OPEN正常情况下打开 FIGURE B B 图
REVERSIBLE BLIND 8字盲板 ORIFICE SWAGE孔板
INSULATED FLANGED JOINT保温法兰连接 PIPE CAP (WELDED)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
VALVES
GATE 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
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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 DESIGNATION单元名称 E – ETHYLENE 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负压总管
ATOMPHERIC VENT WITH WEATHER CAP防雨放空管
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PID图例符号介绍
