一、产品结构特点简介：D343H/Y/W三偏心多层次硬密封蝶阀是我公司主要产品，大量使用在石油、化工、冶金、轻工、电力、气体、水道等领域。二、原理：本阀具有双向无气泡紧密关闭性能。这种几何形状保证阀瓣密封只是在关闭位置时才与阀体阀座接触，因此不会产生磨擦或磨损，并且产生一种扭矩使得弹性密封具有足够的“焊接”性能，确保密封接触的均匀一致性。三、三重偏心几何形状：偏心1阀轴位于阀座后面，使得密封能够完全紧密环绕接触整个阀座。偏心2阀轴中心线偏离管道和阀门中心线，着就免受阀开启和关闭的干扰。偏心3阀座锥体轴偏离阀轴中心线，这样可以在关闭和开启过程中消除磨擦作用，并且实现环绕整个阀座的均匀一致的压缩密封效果。使用寿命更长的无磨擦密封（1）作为标准配置，阀座采Cr13合金或钨络钴合金硬面。（2）密封垫采用螺旋盘绕不锈钢/石墨，用于实现零泄漏。关闭期间的扭距产生阀座力，并均匀一致的作用在整个圆周围。弹性密封弯曲并充满活力，保持了阀座的形状。压缩力沿着周长均匀作用，使得阀门能够实现双向紧密关闭密封的弹性使得阀门阀体和阀瓣能够接触或阔张，避免了由于温度波动而产生堵塞的危险。这种装置是能够自行调整对准。四、标准与规范设计与制造结构长度压力-温度等级配管法兰试验与检验JB/T8527GB122380GB12221JB/T74、GB9131JB/T74-90GB9112-9131HG20592-20596GB/T13927五、材料及主要参数要零件材料阀体WCBZG1Cr18Ni9TiCF8CF3ZG1Cr18Ni12Mo2TiCF8MCF3M压圈WCBZG1Cr18Ni9TiCF8(304)CF3(304L)ZG1Cr18Ni12Mo2TiCF8M(316)CF3M(316L)蝶板碳钢面堆焊Cr13ZG1Cr18Ni9TiCF8(304)CF3(304L)ZG1Cr18Ni12Mo2TiCF8M(316)CF3M(316L)阀杆2Cr131Cr18Ni9Ti0Cr19Ni900Cr19Ni111Cr18Ni12Mo2Ti0Cr17Ni12Mo200Cr17Ni14Mo2阀座1Cr18Ni9Ti0Cr19Ni900Cr19Ni1100Cr19Ni110Cr17Ni12Mo200Cr17Ni14Mo200Cr17Ni14Mo2适用工况适用介质水、蒸汽、油品等硝酸等腐蚀性介质强氧化性介质醋酸等腐蚀性介质尿素等腐蚀性介质蜗轮传动蝶阀在阀门类型代号D后加入“3”表示，示例：D343H-16C气动蝶阀在阀门类型代号D后加入“6”，示例：D643H-25气压0.4~0.6MPa电动蝶阀在阀门类型代号D后加“9”表示，示例：D943H-16C六、主要尺寸及重量：公称压力PN(MPa)公称通径DN(mm)尺寸(mm)LDD1D2bZ-φdH1H短长D43D3431.040106140145/15011085184-187619824850108150160/165125100184-188520225465112170180/185145120204-189522227880114180195/200160135204-181062463121OO127190215/220180155228-18114270330125140200245/250210185248-1813029436815014021O280/285240210248-23148326404200152230335/340295265268-23176-496250165250390/3953503202612-23210-558300178270440/4454003682812-23238-632350190290500/5054604282812-23270-6724002163105655154823012-25/26302-7144502223306155655323020-25/26332-7685002293506706205853220-25/26370-8286002673907807256853620-30432-9527002924308958408003624-30470-100080031847010109509053824-34530-10789003305101110105010053828-34580-118010004105501220116011153828-34650-127212004706301450138013254032-41765-141814005307101675159015254436-48890-151916006007901915182017504840-541010-162318006708702115202019505044-541090-176320007609502325223021605446-541195-20941.640106140145/15011085164-187619824850108150160/165125100164-188520225465112170180/185145120184-189522227880114180195/200160135208-181062463121OO127190215/220180155208-18114270330125140200245/250210185228-1813029436815014021O280/285240210248-23148326404200152230335/3402952652612-23176-4962501652504053553203012-25/26210-5583001782704604103753012-25/26238-6323501902905204704353416-25/26270-6724002163105805254853616-30302-7144502223306405855454020-30332-7685002293507156506084420-34370-8286002673908407707184820-36/41432-9527002924309108407885024-36/41470-10008003184701020/10259508985224-41530-10789003305101120/112510509985428-41580-118010004105501255117011105628-42/48650-127212004706301485139013255832-48/54765-141814005307101685159015256036-48/54890-141916006007901930182017506840-581010-1629D343H/Y/W三偏心多层次硬密封蝶阀生产供应厂商上海石化高压阀门厂有限公司,中国名牌产品,上海知名厂家几十年的生产经验通过ISO9001、TS等认证。致力于阀门的专业生产,为客户提供高质量蝶阀产品。)