常见的PID图例缩写符号

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 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 ONLY) 空冷器

KETTLE TYPE REBOILER OR STEAM GENERATOR

KETTLE TYPE EXCHANGER (PFD ONLY)

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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 容器和炉子

FLOATING ROOF TANK 浮顶罐

CONE ROOF TANK WITH INTERNAL 带内盘管锥型顶罐 COLUMN 柱型 PACKING

INTERNAL BAFFLE

COIL 17

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

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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

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 THE RACK

C4(U) C4 HYDRO AREA AND THROUGH ON THE RACK

E(W) EXISTING AREA AND THROUGH THE RACK

E(X) EXISTING AREA AND THROUGH

OF NEW HEATER) TIE-IN POINT(W) ON THE TIE-IN POINT(U) TIE-IN POINT(W) ON TIE-IN POINT(X) ON 19

THE RACK

GENERAL NOTES

1. FOR INSTRUMENTATION SYMBOLS SEE DWG NO.0005B 仪表符号参阅图DWG NO.0005B

2. FLOW DIAGRAMS ARE DIAGRAMATIC ONLY 。 ROUTING OF PIPELINES MUST BE INVESTIGATED FOR VENTING OF HIGH POINTS OF PIPING AND DRAINING OF LOW POINTS OF 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。

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