PID图例符号介绍

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PID图例符号介绍

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 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

AND 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

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

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

AND

SERVICE 7

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 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 NO S SC WITH SOR SR SS T

NORMALLY NO FLOW 正常情况下无流量 NORMALLY OPEN 正常情况下打开

SAMPLE CONNECTION 取样点

SAMPLE CONNECTION COOLER

连接冷却器的取样点 START OF RUN 开始运行 STRAINER 过滤器

SAFETY SHOWER

安全喷淋

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 CLEAN

OUT

CONNECTION

(FLUSHING)

清理接口（冲洗） REMOVABLE SPOOL 可拆除短管

NOZZLE OR PIPE 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 B B 图

REVERSIBLE BLIND 8字盲板

ORIFICE SWAGE 孔板

INSULATED FLANGED 保温法兰连接

PIPE CAP (WELDED)

WITH JOINT BLIND 12

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 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

(WITH 13

MATERIAL BALANCE 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

STREAM

管线号

PROCESS SECTION AREA(MAY 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

BE 15

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 三通或四通阀

MULTI PORT PLUG 多向切断阀 ANGLE VALVE 角阀 DUAL VALVES 两段排污阀

RAN TYPE VALVE R型阀

T-TYPE GLOBE VALVE T型球阀

TANDEM BLOWNDOWN

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 负呀总管

ATOMPHERIC VENT WITH WEATHER CAP 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 PROTECTION

消防

FIRE HYDRANT 消防炮

FIRE HYDRANT WITH 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 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 ONLY ALL TYPES)

泵

LIQUID RING VACUUM 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 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

EXPANDER 扩大室

HEAT EXCHANGER 换热器

SHELL AND TUBE EXCHANGER 管壳式换热器

HORIZONTAL SHELL AND HEAT EXCHANGER 水平式管壳式换热器

VERTICAL SHELL AND TUBE EXCHANGER 垂直式管壳式换热器

SINGEL SECTION DOUBLE EXCHANGER

TWO SECTION DOUBLE EXCHANGER

AIR COOLER 空冷器

HEAT TUBE HEAT PIPE PIPE 24

AIR COOLER (PFD ONLY) 空冷器

KETTLE TYPE REBOILER STEAM GENERATOR

KETTLE TYPE EXCHANGER ONLY)

GRAPHITE BLOCK EXCHANGER

PLATE EXCHANGER

DRAWING IDENTIFICATION 图形说明

REVISION NO. 修订号

DRAWING NO. 图号

AREA NO. 区号

OR (PFD TYPE

JOB NO. 工号

DRAWING SIZE

VESSELS AND FURNACES 容器和炉子

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 TRACING

F FULL HEAT CONSERVATION H

NORMAL

HEAT

CONSERVATION 一般保温

M DUAL SERVICE INSULATION

P PERSONNEL PROTECTION

防护人员

S SPECIAL 特殊的

T STEAM TRACING

V ACOUSTICAL 听力的

BREAK OF RESPONSIBILITY

SYMBOL FOR LOCATION OF TIE-IN POINT CONNECTED

U 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 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) RACK

GENERAL NOTES

EXISTING AREA AND

THROUGH TIE-IN POINT(X) ON THE

1. FOR INSTRUMENTATION SYMBOLS SEE DWG NO.0005B

仪表符号参阅图DWG NO.0005B 2. OF

FLOW

DIAGRAMS

MUST

ARE BE

DIAGRAMATIC ONLY 。 ROUTING

PIPELINES

INVESTIGATED FOR VENTING OF HIGH POINTS OF PIPING AND DRAINING OF LOW POINTS

PIPING

AND

EQUIPMENT . THESE POINTS ARE NOT NORMALLY SHOWN ON P&I FLOW DIAGRAM

3. THE CONTROL VALVE ASSEMBLY WILL HAVE A 3/4＂ DRAIN

VALVE LOCATED 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。 .

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＂ AND

LARGER

＂Y＂TYPE

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 LOCATION＇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.

在排大气阀的低点有一个9mm的孔来排出液体。

8. BATTERY

LIMIT

ROOT

VALVES ARE NOT NECESSARILY SHOWN ON PROCESS P&IDS. THESE SHOWN BE SHOWN AS REQUIRED

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 BE

COOLING PROVIDED SPECIAL PUMP

DETAILS

DETAILED

SEE OR

ENGINEERING CONTRACTOR. FOR

REQUIREMENTS, DATA

SHEETS

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

REBOILER

HYDRAULICS OR PUMP NPSH REQUIRENENTS.

11. BLOCK VALVES FOR ALL INSTRUMENTS SUCH AS

PLPGLI AND LG ARE NOT INDICATED AND THESE BLOCK VALVES

ARE 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。

LINE DESIGATIONS

CONNECTION MECHANICAL

LINE OR INSTRUMENT INPUT

CAPILLARY TUBING (FILLED SYSTEM)

TO PROCESS,

PNEUMATIC SIGNAL

ELECTRICAL SIGNAL OR

SOFTWARE SIGNAL

HYDRAULIC (LIQOID) SIGNAL

ELECTROMAGNETIC SIGNAL

(INCLUDING NUCLEAR

RADIATION,HEAT AND LIGHT)

INSTRUMENT AIR SUPPLY

INSTRUMENT LINE PURGE **-PURGE MEDIUM

(LINE SERVICE IDENTIFICATION OR AS NOTED)

OR SONIC

RADIO WAVES,

TEMPERATURE INSTRUMENTS

SINGLE THERMOCOUPLE, RTD,

GAUGE OR WELL,

*** - RTD (IF RESISTANCE TEMPERATURE DETECTOR)

DUPLEX THERMOCOUPLE IN ONE WELL

MULTI-ELEMENT FOR

DIFFERENT ELEVATIONS OR ZONES (INDICATE FIRST AND LAST TAG NUMBERS SUFFIXES)

TEMPERATURE REGULATOR

THERMOCOUPLE

OR TAG NUMBER

温度调节阀

PRESSURE INSTRUMENTS 压力调节器

CONTROLLING SIDE

PRESSURE

DEFFERENTIAL PRESSURE REDUCING WITH EXTERNAL AND EXTERNAL PRESSURE TAPS

SAFETY RELIEF VALVE

PRESSURE AND VACUUM SAFETY

RELIEF VALVE

REDUCING

REGULATOR-SELF-CONTAINED

REGULATOR

WITH

EXTERNAL PRESSURE TAP

PILOT OPERATED SAFETY RELIEF VALVE

RELIEVING MANHOLE COVER

PRESSURE OR VACUUM RELIEF

SET PRESS 设定压力

PRESSURE RELIEF RUPTURE DISK

VACUUM 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 INSTRUMENT 插入型流量计 FLUME WEIR

ROATMETER 转子流量计

FLOW STRAIGHTENING VANES

EXTERNAL TYPE INSTRUMENT SPECIFY TYPE

OUTSIDE BUBBLE

IN-LINE FLOW INSTRUMENT

FLOW

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 INDICATOR OR TRANSMITTER FOR STORAGE TANKS OTHER

LEVEL INSTRUMENTS

SPECIFY TYPE OUTSIDE BUBBLE LEVEL REGULATOR WITH

MECHANICAL LINKAGE

CONTROL VALVES

GLOBE 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 SYMBOL）

其他的（在下一个符号中详细说明） THREE WAY GLOBE

TO 41

三通球型调节阀 FOUR WAY VALVE 四通调节阀

ACTUATORS

SPRING AND DIAPHRAGM 弹簧和隔膜

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) VALVE OPENS ON DECREASING CONTROL SIGNAL

FL(C)) FAIL LOCKED(LAST POSITION)

SPLIT RANGE DESIGNATION

A FIRST VALVE TO RESPOND TO INCREASING CONTROL SIGNAL

B SECOND VALVE TO RESPOND TO INCREASING CONTROL SIGNAL

MISCELLANEOUS ITEMS 各种

VALVE CLOSES ON

DECREASING CONTROL SIGNAL

INLINE INSTRUMENTS 在线仪表

FLAME ARRESTOR

CONTINUOUS DRAINER

OPTIONAL VENT LINE

EXCESS FLOW VALVE

PROCESS STEAM TRAP

ANALYZER

ANALYTICAL COMPONENT PHYSICAL PROPERTY

PURGING DETAIL

DIAPHRAGM SEALS

PIPED CONNECTION

OR 45

FLUSH MOUNTED

TRACING

CONVENTIONAL INSTRUMENTATION

DIGITAL INSTRUMENTATION

PUSHBOTTON , SWITCHES & LIGHTS

INDICATING LIGHT

PUSHBOTTON

PUSHBOTTON WITH LIGHT

SWITCH

WITH

LIGHT(LIGHT

INCLUDED FOR EACH PUSHBUTTON FUNCTION)

HIGH/LOW OPEN/CLOSE

LIGHT DESIGNATION

MEASURED VARIABLE

FUNCTION

BYP

HOA

O/C RESET

S/S

TRIP

NOTES

BY PASS HAND/OFF//AUTOMATIC OPEN/CLOSE START/STOP TRIP 47

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 3.

ALL

CONTROL

ROOM

INSTRUMENTS ARE LOCATED IN THE CENTRAL CONTROL ROOM UNLESS OTHERWISE NOTES.

BALOONS AS

REQUIRED FOR CLARITY.

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. 6.

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