仪表常用符号图解

MANUALLY OPERATED VALVES

By adding an actuator to the basic valve symbol ,the valve becomes a control valve .

V-4

闸阀

Globe valve

球形阀止回阀

Ball valve 球阀

阻塞阀

手动控制阀

V-7

Butterfly valve or damper 蝶阀或节气闸

V-8

断流止回阀

Ram valve 冲击阀

Blowdown valve 吹扫阀

Diaphragm valve 薄膜阀

Angle valve 角阀

Three way valve 三通阀

Four way valve 四通阀Disc valve 隔膜阀

Needle valve 针阀Slide valve 滑阀

Other valves

Indicated proper abbreviation under valve, example

2-6″-WB-134-J1B7-FHC-1．5″

UNIT NUMBER 单元编号 LINE SIZE 管线尺寸 SERVICE SYMBOL 用途符号 LINE NUMBER 管线编号

PIPING SERVICE SPECIFICATION 管道用途描述

TYPE OF INSULATION OR TRACING绝缘类型或保温

LINE INSULATION THICKNESS管道保温厚度

INSULATION CODE保温代号

FCC Full cold conservation完全保持冷却

FHC Full heat conservation完全保持伴热

PHC Partial heat conservation局部保持伴热

PP Personnel protection个人防护

NI No insulation无保温

ST Steam traced and insulated蒸汽伴热

ET Electric traced and insulated电伴热INSTRUMENT NUMBERING PHILOSOPHY

X--XX--XXX—X

Multiple instrument designator多种仪表指示

Loop number/Intrument tag回路编号或仪表位号

Section number/Intrument code区域编号或仪表代号

Train number顺序编号

PIPING SYMBOLS管道符号

silencer

消音器filter

过滤器

Open funnel

敞口漏斗

Open drain 敞口排放

Closed drain funnel

密闭排放漏斗slope Downword slope

下斜

others

ge

Pipe specification limit 管线规格界限 Strainghtening vane

矫正器具

Spectacle blind install donut in line 管道上安装

的开位置肓板

E-5

Pipe size reduction

管径尺寸缩小

Spectacle blind install donut in line 管道上安装

的关位置肓板

防火装置

S

软管连接 Temporary strainer

临时过滤器 Basket strainer

篮式过滤器 Y-type strainer

Y 型过滤器 Expansion joint

膨胀接合处

H

Hamer Blind 肓板

Sample Connection

取样连接Steam Trap 蒸汽汽水阀Piping Engineered Item

管道工程单位 Steam Desuperheater

蒸汽减温器

GENERAL 概述

涡流断路器Grade 平面

整个区域

Mesh-Type Mist Eliminator 网状除雾器Note Reference Symbol

注释参照符号Horizontial Vane-Type

Mist Eliminator 水平叶片型除雾器

LINE SYMBOLS管道符号

Primary Process Line

主工艺管道

Secondary Process Line

次工艺管道

Jacketed Pipe 套管

Existing OR Future Line

现有或将有的管道

Flexible Host 柔性软管

Underground Line

地下管道

Instrument Pneumatic

Line仪表气源管线

Instrument Capillary

Tubing仪表毛细管

Hydraulic Signal

水压信号

Electromagnetic,Sonic,,

Optical Or Radioactive

Signal电磁、声波、光学

或辐射信号

Heat Traced Line

伴热管线

Electrical Signal

电信号

Internal

Signal(software or data

link) 内部信号（软件

或数据连接）

ABBRIVATIONS缩写

AG—Above Ground 地面 HP—Horse Power Or Highpressor马达或高压ATM—Atmosphere 大气 H.PT—High Point 高点

BF—Blind Flange 肓法兰 IAC—Insulation Acoustic隔音

BHP—Brake Horse Power马达闸 LC—Lock Closed 锁定关

BL—Battery Limit 电池限额 LO—Lock Open 锁定开

BW—Backwash 逆流 LH—Lock Hopper 锁斗

CC—Chemical Clean化学清洗 LP—Low Pressure 低压

CH OP—Chain Operated连续运转 L,PT—Low Point 低点

CP—Corrosion Probe 防腐蚀探测器

M—Motor Or Motorized Actuator电动机或电动执行器

CSC—Car Seal Closed 气缸密封关 MW—Manway人行道

CSC—Car Seal Open 气缸密封开 NC—Normally Closed常闭

D—Drain 排放 NDE—Normally Deenergized正常不带电DE—Deenergized 不带电 NE—Normally Energized正常带电

E—Energized 带电 NNF—Normally No Flow正常无流量

(E)—Existing 当前的 NO—Normally Open常开

(F)—Furnished 供应 PD—Positive Displacement实际置换

F＆P--Furnished＆piped供应或管道传输 PV—Process Variable进程变量

FC—Fail Closed 故障关 S—Sample Connection取样连接

FI—Fail Indeterminate 不确定故障 SP.GR.—Specific Gravity特殊引力

FL—Fail Locked 故障锁定 SO—Steam Out蒸汽排出

FO—Fail Open Or First Out故障开或首次输出

SOV—Solenoid Operated Valve电磁阀