基本信息
| 标准名称： | 定流向摆线转子润滑泵 |
| 中标分类： |
机械 >>
通用零部件 >>
润滑与润滑装置 |
| 发布部门： | 中华人民共和国机械工业部 |
| 发布日期： | 1996-04-22 |
| 实施日期： | 1996-07-01 |
| 首发日期： | 1900-01-01 |
| 作废日期： | 1900-01-01 |
| 提出单位： | 机械工业部广州机床研究所 |
| 归口单位： | 机械工业部广州机床研究所 |
| 起草单位： | 姜堰市潜水泵厂、广州机床研究所 |
| 起草人： | 张桂成、朱俊峰、刘凤新 |
| 出版社： | 机械工业出版社 |
| 出版日期： | 1996-07-01 |
| 页数： | 8页 |
| 批文号： | 机械科[1996]359号 |
适用范围
本标准规定了定流向摆线转子润滑泵的型号标志、技术要求、试验方法、数据整理、检验规则及标志、包装与贮存。本标准适用于以精制矿物油为工作介质的润滑泵。
前言
没有内容
目录
没有内容
引用标准
没有内容
所属分类： 机械 通用零部件 润滑与润滑装置
【英文标准名称】:StandardPracticeforIntegrityTestingofWaterFiltrationMembraneSystems
【原文标准名称】:水过滤膜系统的完整性测试的标准实施规程
【标准号】:ASTMD6908-2006(2010)
【标准状态】:现行
【国别】:美国
【发布日期】:2006
【实施或试行日期】:
【发布单位】:美国材料与试验协会(US-ASTM)
【起草单位】:D19.08
【标准类型】:(Practice)
【标准水平】:()
【中文主题词】:
【英文主题词】:continuousmonitoring;integrity;membrane;multiplexing;pressuredecay;solubledyetest;TOCtest;vacuumdecay;Dyetracers;Filters/filterprocedures--watertesting;Integritytesting;Membranefilters(MF)--watertesting;Pressuredecay;Solubledye
【摘要】:Theintegritytestmethodsdescribedareusedtodeterminetheintegrityofmembranesystems,andareapplicabletosystemscontainingmembranemoduleconfigurationsofbothhollowfiberandflatsheet;suchas,spiral-woundconfiguration.InallcasesthepracticesapplytomembranesintheRO,NF,andUFmembraneclasses.However,theTOCandDyeTestpracticesdonotapplytomembranesintheMFrangeortheupperendoftheUFporesizerange(0.01x03BC;mandlargerporesizes)duetoinsignificantorinconsistentremovalofTOCmaterialbythesemembranes.Thesemethodsmaybeusedtoidentifyrelativechangesintheintegrityofasystem,orusedinconjunctionwiththeequationsdescribedin9.4,toprovideameansofestimatingtheintegrityintermsoflogreductionvalue.Forcriticalapplications,estimatedlogreductionsusingtheseequationsshouldbeconfirmedbyexperimentfortheparticularmembraneandsystemconfigurationused.Theabilityofthemethodstodetectanygivendefectisaffectedbythesizeofthesystemorportionofthesystemtested.Selectingsmallerportionsofthesystemtotestwillincreasethesensitivityofthetesttodefects.Whendeterminingthesizethatcanbetestedasadiscreteunit,usetheguidelinessuppliedbythesystemmanufacturerorthegeneralguidelinesprovidedinthisstandard.Theapplicabilityofthetestsislargelyindependentofsystemsizewhenmeasuredintermsoftheimpactofdefectsonthetreatedwaterquality(thatis,thesystemLRV).Thisisbecausethebypassflowfromanygivendefectisdilutedinproportiontothesystemstotalflowrate.Forexample,a10-modulesystemwithasingledefectwillproducethesamewaterqualityasa100-modulesystemwithtenofthesamesizedefects.1.1Thispracticecoversthedeterminationoftheintegrityofwaterfiltrationmembraneelementsandsystemsusingairbasedtests(pressuredecayandvacuumhold),solubledye,continuousmonitoringparticulatelightscattertechniques,andTOCmonitoringtestsforthepurposeofrejectingparticlesandmicrobes.Thetestsareapplicabletosystemswithmembranesthathaveanominalporesizelessthanabout1x00B5;m.TheTOC,andDye,testsaregenerallyapplicabletoNFandROclassmembranesonly.1.2Thispracticedoesnotpurporttocoverallavailablemethodsofintegritytesting.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappropriatesafetyandhealthpracticesanddeterminetheapplicabilityofregulatorylimitationspriortouse.7.1Thispracticecoversthedeterminationofintegrityformembranesystemsusingthepressuredecaytest(PDT)andvacuumdecaytest(VDT).7.2Thetestsmaybeusedonmembranesinallclasses,ROthroughMF,andaresuitableforhollowfibers,tubularandflatsheet(suchasspiralwound)configurations.However,thePDTismostcommonlyemployedforin-situtestingofUFandMFsystemsandtheVDTfortestingNFandROelementsandsystems.SeePracticeD3923.10.1ThispracticeisapplicablewherethemembranesystemandwatersourcewillallowthemonitoringofTOCbothupstreamanddownstreamofthesystem,andatleastorderofmagnitudedifferencefromthefeedcanbemeasuredinthepermeate(product)water.SeeD4839