MT/T 240-1997 煤矿降尘用喷咀通用技术条件
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来源:标准资料网
基本信息
| 标准名称： | 煤矿降尘用喷咀通用技术条件 |
| 英文名称： | General specification for the water nozzle |
| 中标分类： |
矿业 >>
矿山机械设备 >>
煤矿专用设备器材 |
| ICS分类： |
采矿和矿产品 >>
煤
|
| 替代情况： | 代替MT 240-1991 |
| 发布部门： | 中华人民共和国煤炭工业部 |
| 发布日期： | 1997-12-30 |
| 实施日期： | 1998-06-01 |
| 首发日期： | |
| 作废日期： | |
| 归口单位： | 煤矿安全标准化技术委员会 |
| 起草单位： | :煤炭科学研究总院重庆分院、煤炭科学研究总院 |
| 出版日期： | |
| 页数： | 14页 |
适用范围
本标准规定了煤矿降尘用喷嘴(以下简称喷嘴)的要求、试验方法、检验规则、标志、包装、运输和贮\r
存。
本标准适用于煤矿喷雾降尘用喷嘴。
前言
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目录
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引用标准
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所属分类： 矿业 矿山机械设备 煤矿专用设备器材 采矿和矿产品 煤
【英文标准名称】:StandardTestMethodforMeasuringLiquidandSolidMaterialFireLimitsinGaseousOxidants
【原文标准名称】:测量气体氧化剂中液体和固体材料着火极限的标准试验方法
【标准号】:ASTMG125-2000(2008)
【标准状态】:现行
【国别】:美国
【发布日期】:2000
【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】:G04.01
【标准类型】:(TestMethod)
【标准水平】:()
【中文主题词】:
【英文主题词】:Firelimit;Firetesting--gases;Flammabilitylimit;Gaseousoxygensystems/service;Oxidantindex;Oxygenindex;Pressurelimit;Promoter/promotedcombustion/ignition
【摘要】:Thistestmethodprovidesformeasuringoftheminimumconditionsofarangeofparameters(concentrationofoxidantinaflowingmixtureofoxidantanddiluent,pressure,temperature)thatwilljustsupportsustainedpropagationofcombustion.Formaterialsthatexhibitflamingcombustion,thisisaflammabilitylimitsimilartothelowerflammabilitylimit,upperflammabilitylimit,andminimumoxidantforcombustionofgases(1).However,unlikeflammabilitylimitsforgases,intwo-phasesystems,theconceptofupperandlowerflamelimitsisnotmeaningful.However,limitscantypicallybedeterminedforvariationsinotherparameterssuchastheminimumoxidantforcombustion(theoxidantindex),thepressurelimit,thetemperaturelimit,andothers.Measurementanduseofthesedataareanalogoustothemeasurementanduseofthecorrespondingdataforgaseoussystems.Thatis,thelimitsapplytosystemslikelytoexperiencecompletepropagations(equilibriumcombustion).Successfulignitionandcombustionbelowthemeasuredlimitsatotherconditionsorofatransientnaturearenotprecludedbelowthethreshold.Flammabilitylimitsmeasuredatonesetofconditionsarenotnecessarilythelowestthresholdsatwhichcombustioncanoccur.Thereforedirectcorrelationofthesedatawiththeburningcharacteristicsunderactualuseconditionsisnotimplied.1.1Thistestmethodcoversaprocedureformeasuringthethreshold-limitconditionstoallowequilibriumofcombustionofmaterialsinvariousoxidantgasesunderspecifictestconditionsofpressure,temperature,flowcondition,fire-propagationdirections,andvariousothergeometricalfeaturesofcommonsystems.1.2ThistestmethodispatternedafterTestMethodD2863-95andincorporatesitsprocedureformeasuringthelimitasafunctionofoxidantconcentrationforthemostcommonlyusedtestconditions.Sections8,9,10,11,13,and14forthebasicoxidantlimit(oxygenindex)procedurearequoteddirectlyfromTestMethodD2863-95.OxygenindexdatareportedinaccordancewithTestMethodD2863-95areacceptablesubstitutesfordatacollectedwiththisstandardundersimilarconditions.1.3Thistestmethodhasbeenfoundapplicabletotestingandrankingvariousformsofmaterials.Ithasalsofoundlimitedusefulnessforsurmisingtheprospectthatmaterialswillprovex201C;oxygencompatiblex201D;inactualsystems.However,itsresultsdonotnecessarilyapplytoanyconditionthatdoesnotfaithfullyreproducetheconditionsduringtest.Thefirelimitisameasurementofabehavioralpropertyandnotaphysicalproperty.UsesofthesedataareaddressedinGuidesG63andG94.Note18212;Althoughthistestmethodhasbeenfoundapplicablefortestingarangeofmaterialsinarangeofoxidantswitharangeofdiluents,theaccuracyhasnotbeendeterminedformanyofthesecombinationsandconditionsofspecimengeometry,outsidethoseofthebasicprocedureasappliedtoplastics.Note28212;TestMethodD2863-95hasbeenrevisedandtherevisedTestMethodhasbeenissuedasD2863-97.Themajorchangesinvolvesampledimensions,burningcriteriaandthemethodfordeterminingtheoxygenindex.TheaimoftherevisionswastoalignTestMethodD2863withISO4589-2.Sixlaboratoriesconductedcomparisonroundrobintestingonself-supportingplasticsandcellularmaterialsusingD2863-95andD2863-97.Theresultsindicatethatthereisno......
【中国标准分类号】:C82
【国际标准分类号】:19_040
【页数】:9P.;A4
【正文语种】:英语
Product Code:SAE AS4228
Title:Fitting, Adapter, External Thread, Beam Seal to Integral Weld Ring
Issuing Committee:G-3, Aerospace Couplings, Fittings, Hose, Tubing Assemblies
Scope:Scope unavailable.
