隔膜式系列压力表
隔膜式系列压力表(配接化学密封)DiaphragmSeriesPressureGauge(chemicalseals)F标准型Fstandardstyle:一般螺栓式隔离体NormalthreadedconnectiontypeF1:I型法兰隔离体1-ShapeFlangeF2:敞开式法兰隔离体OpenFlangeF4:角度可调式隔离体AngleadjustableF5:探入式隔离体ExtededtypeF6;F7:卫生型隔离体SanitarydiaphragmsealsF8:焊接一体式Weldedone-piecetypeF9:管道型In-Line-TypeDiaphragmSealsToFitStandardFlangesF10:在线型隔离体InLineDiaphragmSealsF11:夹心式隔离体Cell-typeMS:MS型法兰MStypeflange产品简介隔膜式系列压力表(配接化学密封),是由一个不同类型的通用压力表与一个隔膜隔离体配接而成的。在通用型压力表与隔膜隔离体之间还可以配接具有特定要求的连接体。通过这种配接,使一般通用型的压力表,增加了对特殊腐蚀要求、温度高、粘度大或含有固态浮游物、易凝固介质压力的测量性能。隔膜式压力表(配接化学密封)在石油化工、制碱、化纤、制药、钢铁、食品等行业测量流体介质压力时被广泛使用。BriefSeriesYTPdiaphragmpressuregauge(chemicalseals)iscomposedofaconventionalpressuremeasuringinstrument,aconnectorandadiaphragmseal.Thiscombinationenablesageneralpurposepressuregaugetomeasuremediaofstrongcorrosion,hightemperature,highviscosity,containingsuspendedmatterorcrystallizing.Diaphragmgaugesareuniversallyusedinpetrochemical,alkali,chemicalfiber,pharmaceutical,metallurgical,andfoodindustries.结构原理配接化学密封系列压力表的工作原理如图所示。隔离膜片在被测介质压力P的作用下产生变形,压缩内部充填的工作液形成一个相当于P的压力P’。经工作液的传导,使压力仪表中的弹性元件自由端产生相应的变形,并按与之相配接的类别压力仪表工作原理显示出被测的压力值。ConfigurationPrincipleThisillustrationshowstheoperatingprincipleofthediaphragmpressuregauge.ThediaphragmisdeflectedbythepressureofmediumP,andanequivalentpressureP’isgenerated.Withtran***ittingthroughworkingfluid,thepressureP’deflecttheelasticelementofapressuremeasuringinstrumentwhichthereaftershowsthepressurevalue.隔膜压力表密封液的液位差配接化学密封系列压力表在安装时受压部份与通用型压力表处于不同位置时,(尤其对于采用软管连接的隔膜表)应考虑到由于液位差对压力的影响。如图所示。(密封工作液比重大体等于1的,落差1m,压力差约为0.01Mpa/cm2。LevelDifferenceofdiaphragmpressuregaugesealsliquidWhenadiaphragmpressuregaugeismountedwithpressuregaugeanddiaphragmsealatdifferentpositi***,theeffectofleveldifferenceshouldbetakenintoc***ideration(especiallyforadiaphragmgaugewithcapillary).Astheillustrationshows,withaS.G.oftheworkingfluidatapprox.1,andaleveldifferenceof1m,thepressuredifferenceisapprox.0.01MPa/cm2.隔膜式压力表的温度影响隔膜式压力表其温度的影响量与密封液膨胀系数隔膜刚度及受压部位的温度有关。仪表在使用环境温度偏离20&plu***n;5℃时,受温度影响的示值***大变化率刚性不大于0.1%℃,柔性(远接式)不大于0.1+0.025L%/℃(L-传压导管长度m)隔膜式压力表在制做时应注意根据不同的使用环境,选择相适应的密封工作液。TemperatureInfluenceofdiaphragmpressuregaugeThetemperatureinfluenceofadiaphragmpressuregaugeisrelativetoexpansioncoefficientofthesealsworkingfluid,rigidityofthediaphragm,andtemperatureofpressedpart.Whenworkingtemperaturedeviatesfrom20&plu***n;5℃,theindicationvarieswithin0.1%/℃forrigidsystem,andwithin0.1+0.025L%/℃(L-lengthofcapillaryinm.)forflexiblesystem(remotemounting).Diaphragmpressuregaugesarefilledwithsuitableworkingfluidaccordingtodifferentoperatingconditi***.隔膜式压力表的耐腐蚀性能本公司制造的隔膜式压力表其耐腐蚀性能包括充分满足客户外部环境,及内部环境(介质腐蚀性)两个方面,根据外部环境的要求,可以选择本公司生产的不同类型的压力表及与之相适应的隔离器进行配接。对于不同腐蚀性的测量介质可通过选择与之相适应的防腐材料隔膜及防腐材料的隔离体部件来保证。Corrosion-ProofPropertiesofdiaphragmpressuregaugeInstrumentsDiaphragmPressureGaugesatisfiescustomers’requirementsofbothenvironmentalconditi***andflowconditi***(corrosivemedia)basedonitssignificantcorrosion-proofproperties.Choosevariouspressuregaugescombinedwithappropriateseparatoraccordingtoenvironmentalconditi***.Choosematerialofdiaphragmandhousingcompatiblewithcorrosivemedia.隔膜材料:SUS316,SUS316L蒙乃尔合金(Cu30Ni70)哈氏合金(H276c)钽(Ta)氟塑料(F4)钛膜片等隔离体材料:1Cr18Ni9TiSUS316SUS316L钛材氟塑料(F4),在不锈钢外部喷涂或内衬氟塑料或适用其它材料密封垫圈材料:丁睛橡胶,氟橡胶,硅橡胶及氟塑料DiaphragmMaterial:SUS316,SUS316L,Monel(Cu30Ni70),Hastelloy(H276c),Tantalum(Ta),Fluoroplastic(F4)PartitionMaterial:1Cr18Ni9Ti,SUS316,SUS316L,Fluoroplastic(F4),FluoroplasticCoatedStainlessSteelSealsMat***l:NitrileRubber,Viton,SiliconeRubber,Fluoroplastic产品详细资料请点击:H.隔膜式配接化学密封隔膜压力表介绍.pdf隔膜压力表、法兰压力表、法兰隔膜压力表、化学密封压力表、)
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