常见的PID图例缩写符号

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 STEAM

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

A V ATMOSPHERIC VENT (NOT FROM PSV)

通大气（不从安全阀）

SV SAFETY V ALVE 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 WA TER

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

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