LINE SERVICE IDENTIFICATION
SYMBOL 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
蒸汽与凝液系统
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 CONDENSA TE
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
饱与低压蒸汽
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-CONTAMINA TED POLLUTION DRAIN
无污染排放
OD OIL Y DRAIN
油污
EXHAUST AND VENT SYSTEMS
A V ATMOSPHERIC VENT (NOT FROM PSV)
通大气（不从安全阀）
SV SAFETY V ALVE TO A TMOSPHERE
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 W ASHING 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 WA TER
锅炉给水
FW FIRE WATER
消防水
IW INTERMEDIATE WATER
二次水
CWR COOLING WA TER RETURN
冷却水回水
CWS COOLING W A TER SUPPL Y
冷却水
PW POLISHED WA TER
工艺水
QW QUENCH W ATER
急冷水
UW UTILITY WA TER
工业水
WW W ASTE W ATER
废水
MISCELLANEOUS ABBREVIATION AND SERVICE SYMBOLS
各种缩写与符号
A AIR MOTOR
空气马达
ACC ACCESSIBLE
可接近得
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
EW EYEW ASH
洗眼
FLG FLANGE
法兰
LC LOCKED CLOSED
锁定关闭
LO LOCKED OPEN
锁定打开
NC NORMALL Y CLOSED
正常情况下关闭
NNF NORMALL Y NO FLOW
正常情况下无流量
NO NORMALL Y OPEN
正常情况下打开
S SAMPLE CONNECTION
取样点
SC SAMPLE CONNECTION WITH COOLER 连接冷却器得取样点
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
ELECTRICALL Y 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
BA TTERY 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
CLEAN OUT CONNECTION (FLUSHING)
清理接口（冲洗）
REMOV ABLE SPOOL
可拆除短管
NOZZLE OR PIPE WITH BLIND FLANGE
带盲法兰得喷嘴或管线
SPACER FOR BLIND
盲管位置
NORMALL Y CLOSED
正常情况下关闭
NORMALL Y 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-STRAINER
T型过滤器
PERMANENT Y-STRAINER (WITH V ALVE)
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
V ALVES
GA TE V ALVE
闸阀
BUTTERFL Y V ALVE
蝶阀
DIAPHRAGM V ALVE
隔膜阀
GLOBE V ALVE
球阀
NEEDLE V ALVE
针型阀
PLUG V ALVE
截止阀
BALL VALVE
球阀
CHECK V ALVE
止逆阀
STOP CHECK V ALVE(BOILER NON-RETURN V ALVE)
带手轮止逆阀
THREE 0R FOUR V ALVE
三通或四通阀
MULTI PORT PLUG
多向切断阀
ANGLE V ALVE
角阀
DUAL TANDEM BLOWNDOWN V ALVES
两段排污阀
RAN TYPE V ALVE
R型阀
T-TYPE GLOBE V ALVE
T型球阀
AUTOMA TIC RECIRCULATION V ALVE
自动再循环阀
INTERLOCKED V ALVES(MECHANICAL LINK))
机械联动阀
QUICK OPENING OR CLOSING V ALVE
快速开关阀
V ALVE WITH BODY CA VITY RELIEF OR BODY BLEED CONNECTION 带有排放阀得阀门
DAMPER
挡板
APPROPRIATE ABBREVIATION
合适得缩写
SLIDE GATE V ALVE
滑动闸阀
EQUIPMENT IDENTIFACATION
设备符号
SUPPLIED WITH VENDOR EQUIPMENT
供应商提供得设备
SPARE(A,B,C,ETC USED IF PARALLEL UNITS)
同一设备得编号
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
特殊管项与各种设备
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 CAP
防雨放空管
DUPLEX STRAINER
相同得过滤器
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 PROTECTION
消防
FIRE HYDRANT
消防炮
FIRE HYDRANT WITH MONITOR
带监视器得消防栓
FIRE HYDRANT WITH PUPPER CONNECTION
消防栓
HOSE HOUSE
消防箱
V ALVE WITH INDICA TOR POST
带指示得阀
MONITOR
监视器
EM IF ELEVATED
PUMP
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 CANNED
PUMP (PFD ONL Y ALL TYPES)
泵
LIQUID RING V ACUUM PUMP
水环式真空泵
COMPRESSOR
压缩机
SINGLE STAGE RECIPROCATING MULTI-STAGE RECIPROCATING CENTRIFUGAL
离心式
ROTARY
旋转式
BLOWER FAN
鼓风机
BLOWER (PFD ONL Y ALL TYPES) 鼓风机
COMPRESSOR (PFD ONL Y)
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
相应得缩写
A AIR
空气
D DIESEL
柴油
H HYDRAULIC
水力得
M ELECTRIC
电气得
STEAM TURBINE
蒸汽涡轮
EXPANDER
扩大室
HEAT EXCHANGER
换热器
SHELL AND TUBE HEAT EXCHANGER
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 EXCHANGER
TWO SECTION DOUBLE PIPE EXCHANGER
AIR COOLER
空冷器
AIR COOLER (PFD ONL Y)
空冷器
KETTLE TYPE REBOILER OR STEAM GENERA TOR KETTLE TYPE EXCHANGER (PFD ONL Y)
GRAPHITE BLOCK TYPE EXCHANGER
PLATE EXCHANGER
DRAWING IDENTIFICATION
图形说明
REVISION NO、
修订号
DRAWING NO、
图号
AREA NO、
区号
JOB NO、
工号
DRAWING SIZE
VESSELS AND FURNACES
容器与炉子
FLOATING ROOF TANK
浮顶罐
CONE ROOF TANK WITH INTERNAL COIL
带内盘管锥型顶罐
COLUMN
柱型
PACKING
INTERNAL BAFFLE
VORTEX BREAKER
旋风分离器
CABIN TYPE HEATER WITH EXTERNAL CROSS-OVERS
HORIZONAL TYPE HEATER WITH INTERNAL CROSSOVERS
内部有交叉得水平加热管
VESSEL ELEVA TIONS
离地面高度
INSULATION CODE
保温代码
D ANTI-SWEAT INSULATION
防水保温
E ELECTRICAL TRACING
F FULL HEAT CONSERV ATION
H NORMAL HEAT CONSERV ATION
一般保温
M DUAL SERVICE INSULATION
P PERSONNEL PROTECTION
防护人员
S SPECIAL
特殊得
T STEAM TRACING
V ACOUSTICAL
听力得
BREAK OF RESPONSIBILITY
SYMBOL FOR LOCATION OF TIE-IN POINT CONNECTED
U NEW ETHYLENE STORAGE AREA
乙烯新区得
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 W ATER)
E EXISTING AREA
D DPG AREA
C4 C4 HYDRO AREA
D(W) DPG AREA AND THROUGH THE TIE-IN POINT(W) ON THE RACK
C4(U) C4 HYDRO AREA AND THROUGH THE TIE-IN POINT(U) ON THE RACK
E(W) EXISTING AREA AND THROUGH TIE-IN POINT(W) ON THE RACK E(X) EXISTING AREA AND THROUGH TIE-IN POINT(X) ON THE RACK
GENERAL NOTES
1、FOR INSTRUMENTA TION SYMBOLS SEE DWG NO、0005B
仪表符号参阅图DWG NO、0005B
2、FLOW DIAGRAMS ARE DIAGRAMA TIC ONL Y 。ROUTING
OF PIPELINES MUST BE INVESTIGA TED FOR VENTING
OF HIGH POINTS OF PIPING AND DRAINING OF LOW
POINTS OF PIPING AND EQUIPMENT 、THESE POINTS
ARE NOT NORMALL Y SHOWN ON P&I FLOW DIAGRAM
3.THE CONTROL VALVE ASSEMBL Y WILL HA VE A 3/4＂DRAIN
V ALVE LOCATED ON THE UPSTREAM SIDE OF THE CONTROL
V ALVE
在调节阀得上游应有一个3/4英寸得就地排放阀。
、
4.VESSEL INTERNALS, FURNACE COILS , HEADERS, AND
MANIFOLDS ARE SHOWN TO THE EXTENT REQUIRED FOR CLARITY、容器内部、炉管等在必要得地方标明。
5.ALLOWANCE IS TO BE MADE FOR TEMPORARY STRAINERS
IN SUCTION LINES OF ALL PUMPS AND COMPRESSOR 1 1/2＂
AND LARGER 、＂Y＂TYPE STRAINERS ARE TO BE PROVIDED
IN SUCTION LINES 1 1/2＂AND SMALLER、、
在所有泵、压缩机得吸入管线上均装有1 1/2＂或更大得临时过滤器，＂Y＂型过滤器则被装在1 1/2＂或更小得管线上。
6.＇TO ATM AT SAFE LOCA TION＇MEANS 3000mm ABOVE ANY
PLATFORM OR STAIRWAY WITHIN AN 8000mm RADIUS、
7.9mm WEEP HOLE SHALL BE PROVIDED IN LOW POINTS OF
RELIEF VALVE DISCHARGES VENTING TO ATMOSPHERE、
在排大气阀得低点有一个9mm得孔来排出液体。
8.BA TTERY LIMIT OR ROOT V ALVES ARE NOT NECESSARIL Y SHOWN
ON PROCESS P&IDS、THESE SHOWN BE SHOWN AS REQUIRED ON DISTRIBUTION AND/OR UTILITY P&IDS DURING DETAILED DESIGN、界区阀与根部阀在工艺流程图中不一定有，但在公用工程得P&IDS图中会有详细资料。
9.PUMP SEAL FLUSHES AND COOLING DETAILS TO BE PROVIDED
BY DETAILED ENGINEERING CONTRACTOR、FOR SPECIAL REQUIREMENTS, SEE PUMP DA TA SHEETS OR SCHEDULES、
泵得密封与冷却系统由工程承包商提供，有特殊要求请查瞧泵得曲线与表。
10、ALL ELEVA TIONS SHOWN ARE PRELIMINARY, ELEV ATIONS ARE TO
BE FINALIZED DURING DETAILED ENGINEERING, TOWER AND DRUM ELEV ATIONS ARE BASED ON REBOILER HYDRAULICS OR PUMP NPSH REQUIRENENTS、
11、BLOCK V ALVES FOR ALL INSTRUMENTS SUCH AS
PLPGLI AND LG ARE NOT INDICA TED AND THESE BLOCK V ALVES
ARE 3/4＂, IF NOT INDICATED、
12、RUNNING SIGNALS FOR ALL MOTOR ARE NOT INDICATED、
所有得马达运行信号不被显示。
LINE DESIGATIONS
CONNECTION TO PROCESS, MECHANICAL
LINE OR INSTRUMENT INPUT
CAPILLARY TUBING
(FILLED SYSTEM)
PNEUMA TIC SIGNAL
ELECTRICAL SIGNAL OR
SOFTWARE SIGNAL
HYDRAULIC (LIQOID) SIGNAL
ELECTROMAGNETIC OR SONIC SIGNAL
(INCLUDING RADIO WA VES, NUCLEAR
RADIATION,HEAT AND LIGHT)
INSTRUMENT AIR SUPPL Y
INSTRUMENT LINE PURGE
**-PURGE MEDIUM
(LINE SERVICE IDENTIFICATION OR AS NOTED)
TEMPERATURE INSTRUMENTS
SINGLE THERMOCOUPLE, RTD,
GAUGE OR WELL,
*** - RTD (IF RESISTANCE
TEMPERATURE DETECTOR)
DUPLEX THERMOCOUPLE
IN ONE WELL
MULTI-ELEMENT THERMOCOUPLE FOR
DIFFERENT ELEV ATIONS OR ZONES
(INDICATE FIRST AND LAST TAG
NUMBERS OR TAG NUMBER SUFFIXES)
TEMPERATURE REGULATOR
温度调节阀
PRESSURE INSTRUMENTS
压力调节器
CONTROLLING SIDE
PRESSURE REDUCING REGULATOR-SELF-CONTAINED
PRESSURE REGULATOR WITH EXTERNAL PRESSURE TAP DEFFERENTIAL PRESSURE REDUCING WITH EXTERNAL AND EXTERNAL PRESSURE TAPS
SAFETY RELIEF V ALVE
PRESSURE AND V ACUUM SAFETY
PILOT OPERATED SAFETY RELIEF V ALVE
RELIEVING MANHOLE COVER
PRESSURE OR V ACUUM RELIEF
SET PRESS
设定压力
PRESSURE RELIEF RUPTURE DISK
V ACUUM RELIEF RUPTURE DISK
FLOW INSTRUMENTS
流量计
ORIFICE PLATE OR RESTRICTION ORIFICE
孔板或限流孔
ORIFICE PLATE IN QUICK CHANGE FITTING
VENTURL FLOW TUBE OR FLOW NOZZLE
文丘里流量计或喷嘴
INSERTION TYPE FLOW INSTRUMENT
插入型流量计
FLUME
WEIR
ROATMETER
转子流量计
FLOW STRAIGHTENING V ANES
EXTERNAL TYPE FLOW INSTRUMENT SPECIFY TYPE
OUTSIDE BUBBLE
IN-LINE FLOW INSTRUMENT
SPECIFY TYPE
OUTSIDE BUBBLE
LEVEL 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 INSTRUMENT
RADIATION OR SONIC LEVEL INSTRUMENT
FLOAT AND TAPE TYPE LEVEL INDICA TOR OR TRANSMITTER FOR STORAGE TANKS
OTHER LEVEL INSTRUMENTS SPECIFY TYPE OUTSIDE BUBBLE
LEVEL REGULATOR WITH MECHANICAL LINKAGE
CONTROL V ALVES
球阀
ANGLE
角阀
BUTTERFL Y
蝶型
BALL、PLUG OR DISC
球、塞子、圆盘
DIAPHRAGM（SAUNDERS）
隔膜
OTHER （SPECIFY NEXT TO SYMBOL）其她得（在下一个符号中详细说明）
THREE W AY GLOBE
三通球型调节阀
FOUR W AY VALVE
四通调节阀
ACTUATORS
SPRING AND DIAPHRAGM
弹簧与隔膜
DIFFERENTIAL DIAPHRAGM
微分隔膜
PISTON TYPE - SINGLE ACTING PISTON TYPE - DOUBLE ACTING ELECTRIC MOTOR
电动马达
SOLENOID
螺线管
ELECTRO-HYDRAULIC
GAS MOTOR
气动马达
MANUAL HANDWHEEL
手轮
ACCESSORIES
SIDE MOUNTED HANDWHEEL
MANUAL RESET
REMOTE RESET
ADDITIONAL INFORMATION
BODY SIDE
阀体尺寸
BTS BUBBLE TIGHT SHUT-OFF
TSO TIGHT SHUT-OFF
AIR FAILURE POSITION
FO FAIL OPEN
故障时打开
FC FAIL CLOSE
故障时关闭
FL(O) FAIL LOCKED(LAST POSITION) V ALVE OPENS ON DECREASING CONTROL SIGNAL
FL(C)) FAIL LOCKED(LAST POSITION) V ALVE CLOSES ON DECREASING CONTROL SIGNAL
SPLIT RANGE DESIGNA TION
A FIRST V ALVE TO RESPOND TO INCREASING CONTROL SIGNAL
B SECOND V ALVE TO RESPOND TO INCREASING CONTROL SIGNAL MISCELLANEOUS ITEMS
各种
INLINE INSTRUMENTS
在线仪表
FLAME ARRESTOR
CONTINUOUS DRAINER
OPTIONAL VENT LINE
EXCESS FLOW V ALVE
PROCESS STEAM TRAP
ANALYZER
ANAL YTICAL COMPONENT OR PHYSICAL PROPERTY
PURGING DETAIL
DIAPHRAGM SEALS
PIPED CONNECTION
FLUSH MOUNTED
TRACING
CONVENTIONAL INSTRUMENTA TION
DIGITAL INSTRUMENTATION
PUSHBOTTON , SWITCHES & LIGHTS
INDICATING LIGHT
PUSHBOTTON
PUSHBOTTON WITH LIGHT
SWITCH
SWITCH WITH LIGHT(LIGHT INCLUDED FOR EACH PUSHBUTTON FUNCTION)
HIGH/LOW OPEN/CLOSE
LIGHT DESIGNA TION
MEASURED V ARIABLE
FUNCTION
BYP BY PASS
HOA HAND/OFF//AUTOMA TIC
O/C OPEN/CLOSE
RESET
S/S START/STOP
TRIP TRIP
NOTES
1、FOR PIPING AND EQUIPMENT SYMBOLS , SEE DWG 000054
2.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 DIPECTED WITH INDIVIDUAL COMPONENT BALOONS AS REQUIRED FOR CLARITY、
3、ALL CONTROL ROOM INSTRUMENTS ARE LOCA TED IN THE CENTRAL CONTROL ROOM UNLESS OTHERWISE NOTES、
4.NEEDLE V ALVE 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、