仪表常用符号图解

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1、MANUALLYOPERATEDVALVESByaddinganactuatortothebasicvalvesymbol,thevalvebecomesacontrolvalve.OthervalvesIndicatedproperabbreviationundervalve,example2-6″-WB-134-J1B7-FHC-1．5″UNITNUMBER单元编号LINESIZE管线尺寸SERVICESYMBOL用途符号LINENUMBER管线编号PIPINGSERVICESPECIFICATION管道用途描述T

2、YPEOFINSULATIONORTRACING绝缘类型或保温LINEINSULATIONTHICKNESS管道保温厚度INSULATIONCODE保温代号FCCFullcoldconservation完全保持冷却FHCFullheatconservation完全保持伴热PHCPartialheatconservation局部保持伴热PPPersonnelprotection个人防护NINoinsulation无保温STSteamtracedandinsulated蒸汽伴热ETElectrictracedandinsu

3、lated电伴热INSTRUMENTNUMBERINGPHILOSOPHYX--XX--XXX—XMultipleinstrumentdesignator多种仪表指示Loopnumber/Intrumenttag回路编号或仪表位号Sectionnumber/Intrumentcode区域编号或仪表代号Trainnumber顺序编号PIPINGSYMBOLS管道符号GENERAL概述LINESYMBOLS管道符号ABBRIVATIONS缩写AG—AboveGround地面HP—HorsePowerOrHighpresso

4、r马达或高压ATM—Atmosphere大气H.PT—HighPoint高点BF—BlindFlange肓法兰IAC—InsulationAcoustic隔音BHP—BrakeHorsePower马达闸LC—LockClosed锁定关BL—BatteryLimit电池限额LO—LockOpen锁定开BW—Backwash逆流LH—LockHopper锁斗CC—ChemicalClean化学清洗LP—LowPressure低压CHOP—ChainOperated连续运转L,PT—LowPoint低点CP—Corrosio

5、nProbe防腐蚀探测器M—MotorOrMotorizedActuator电动机或电动执行器CSC—CarSealClosed气缸密封关MW—Manway人行道CSC—CarSealOpen气缸密封开NC—NormallyClosed常闭D—Drain排放NDE—NormallyDeenergized正常不带电DE—Deenergized不带电NE—NormallyEnergized正常带电E—Energized带电NNF—NormallyNoFlow正常无流量(E)—Existing当前的NO—NormallyOp

6、en常开(F)—Furnished供应PD—PositiveDisplacement实际置换F＆P--Furnished＆piped供应或管道传输PV—ProcessVariable进程变量FC—FailClosed故障关S—SampleConnection取样连接FI—FailIndeterminate不确定故障SP.GR.—SpecificGravity特殊引力FL—FailLocked故障锁定SO—SteamOut蒸汽排出FO—FailOpenOrFirstOut故障开或首次输出SOV—SolenoidOpera

7、tedValve电磁阀FOB—FlatOnBottom底部平面SP—SetPoint设定点FOT—FlatOnTop顶部平面SR—StressRelieve减压FP—FullPort整个端口ST—SteamTrap蒸汽汽水阀FV—FullVacuum完全真空TSO—TightShut-off完全切断GE—GeneralElectricGasificationProcess常规电气化程序GO—GearOperated齿轮传动T/T—TangentToTangent相互接触HH—Handhole人孔UG—Undergrou

8、nd地下的HS-=-HydraulicSupply供水V—Vent出口VV—VentValve排放阀VB—VortexBreaker涡流断路器VP—VeePortV型端口Commoditycodes通常代码Air空气LN—LowPresureNitrogen低压氮气BD—BlowDown吹扫LS—LowPresureSteam低压