1、BRITISH STANDARD BS EN 561:2002 Gas welding equipment Quick-action coupling with shut-off valves for welding, cutting and allied processes The European Standard EN 561:2002 has the status of a British Standard ICS 23.040.70 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBS EN
2、561:2002 This British Standard, having been prepared under the direction of the Engineering Sector Policy and Strategy Committee, was published under the authority of the Standards Policy and Strategy Committee on 10 July 2002 BSI 10 July 2002 ISBN 0 580 40062 X National foreword This British Standa
3、rd is the official English language version of EN 561:2002. It supersedes BS EN 561:1995 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committee WEE/18, Gas welding appliances, which has the responsibility to: A list of organizations represented on this commi
4、ttee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European publications referred to in this document may be found in the BSI Catalogue under the section entitled “International Standards Correspondence Index”, or by using the “S
5、earch” facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from leg
6、al obligations. aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. S
7、ummary of pages This document comprises a front cover, an inside front cover, the EN title page, pages 2 to 14, an inside back cover and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication Amd. No. Date Comm
8、entsEUROPEANSTANDARD NORMEEUROPENNE EUROPISCHENORM EN561 June2002 ICS23.040.70 SupersedesEN561:1994 Englishversion GasweldingequipmentQuickactioncouplingwithshutoff valvesforwelding,cuttingandalliedprocesses MatrieldesoudageauxgazRaccordsrapides obturationpourlesoudage,coupageetlestechniques connexe
9、s GasschweigerteSchlauchk upplungenmitselbstttiger GassperrefrSchweien,Schneidenundverwandte Prozesse ThisEuropeanStandardwasapprovedbyCENon25March2002. CENmembersareboundtocomplywiththeCEN/CENELECInternalRegulationswhichstipulatetheconditionsforgivingthisEurope an Standardthestatusofanationalstanda
10、rdwithoutanyalteration.Uptodatelistsandbibliographicalreferencesconcernings uchnational standardsmaybeobtainedonapplicationtotheManagementCentreortoanyCENmember. ThisEuropeanStandardexistsinthreeofficialversions(English,French,German).Aversioninanyotherlanguagemadebytra nslation undertheresponsibili
11、tyofaCENmemberintoitsownlanguageandnotifiedtotheManagementCentrehasthesamestatusasthe official versions. CENmembersarethenationalstandardsbodiesofAustria,Belgium,CzechRepublic,Denmark,Finland,France,Germany,Greece, Iceland,Ireland,Italy,Luxembourg,Malta,Netherlands,Norway,Portugal,Spain,Sweden,Switz
12、erlandandUnitedKingdom. EUROPEANCOMMITTEEFORSTANDARDIZATION COMITEUROPENDENORMALISATION EUROPISCHESKOMITEEFRNORMUNG ManagementCentre:ruedeStassart,36B1050Brussels 2002CEN Allrightsofexploitationinanyformandbyanymeansreserved worldwideforCENnationalMembers. Ref.No.EN561:2002EEN561:2002(E) 2 Contents
13、page Foreword3 Introduction .4 1 Scope 4 2 Normativereferences 4 3 Termsanddefinitions. .4 4 Typesofcouplings 5 5 Installation 5 6 Designrequirements . 5 7 Workingrequirements .7 8 Generaltestconditions . 8 9 Testprocedures . 11 10 Marking .13 Bibliography 14EN561:2002(E) 3 Foreword ThisdocumentEN56
14、1:2002hasbeenpreparedbyTechnicalCommitteeCEN/TC121“Welding“,thesecretariatof whichisheldbyDS. ThisEuropeanStandardshallbegiventhestatusofanationalstandard,eitherbypublicationofanidenticaltextor byendorsement,atthelatestbyDecember2002,andconflictingnationalstandardsshallbewithdrawnatthelatest byDecem
15、ber2002. ThisdocumentsupersedesEN561:1994. AccordingtotheCEN/CENELECInternalRegulations,thenationalstandardsorganizationsofthefollowing countriesareboundtoimplementthisEuropeanStandard:Austria,Belgium,CzechRepublic,Denmark,Finland, France,Germany,Greece,Iceland,Ireland,Italy,Luxembourg,Malta,Netherl
16、ands,Norway,Portugal,Spain, Sweden,SwitzerlandandtheUnitedKingdom.EN561:2002(E) 4 Introduction Quickactioncouplingswithshutoffvalvesareusedinequipmentforgaswelding,cuttingandalliedprocessesto connectthehosesusedbetweentheregulatorandthetorch,eithertooneanotherortotheregulatorsandthe torchesthemselve
17、s. Thesecouplingsarefittedwithshutoffdevicesthatinterruptthegasflowwhenthetwoelementsaredisconnected, sothatcouplinganduncouplingoperationscanbeperformedmanuallywhiletheequipmentisunderpressure. 1Scope ThisEuropeanStandarddefinesthespecificationsandthetypetestsforquickactioncouplingswithshutoff valv
18、es.Itappliestoquickactioncouplingsusedbetweentheregulatorandthetorchinequipmentforgaswelding, cuttingandalliedprocesses. ThisstandardappliestocaseswherethesecouplingsareusedwithhosesaccordingtoEN559orthreadedunions accordingtoEN560. 2 Normativereferences ThisEuropeanStandardincorporatesbydatedorunda
19、tedreference,provisionsfromotherpublications.These normativereferencesarecitedattheappropriateplacesinthetext,andthepublicationsarelistedhereafter.For datedreferences,subsequentamendmentstoorrevisionsofanyofthesepublicationsapplytothisEuropean Standardonlywhenincorporatedinitbyamendmentorrevision.Fo
20、rundatedreferencesthelatesteditionofthe publicationreferredtoapplies(includingamendments). prEN7301, GasweldingequipmentSafetydevicesPart1:Incorporatingaflame(flashback)arrestor. EN29090, Gastightnessofequipmentforgasweldingandalliedprocesses(ISO9090:1989). EN29539, Materialsforequipmentusedingaswel
21、ding,cuttingandalliedprocesses(ISO9539:1988). ISO6150, PneumaticfluidpowerCylindricalquickactioncouplingsformaximumworkingpressuresof10bar, 16barand25bar(1MPa,1,6MPaand2,5MPa)Plugconnectingdimensions,specifications,application guidelinesandtesting. 3 Termsanddefinitions ForthepurposesofthisEuropeanS
22、tandard,thefollowingtermsanddefinitionsapply. 3.1 quickactioncouplingwithshutoffvalve deviceenablingarapidcouplingoruncouplingunderpressureofequipmentand/orhoses,andpreventingthe mutualconnectionoftwolinescontainingincompatiblegases(e.g.oxygenandfuelgas) 3.2 elements devicecomprisingtwoelements,amal
23、eandafemaleelement,ofwhichthefemaleelementisfittedwithan automaticshutoffsystemwhichpreventsgasleakagewhenthetwoelementsareuncoupledEN561:2002(E) 5 4 Typesofcouplings Thisstandarddealswiththreetypesofquickactioncouplingswithshutoffvalves,accordingtothegasesforwhich theyareintended. Thesethreetypesar
24、ethefollowing: a) typeOoxygen; b) typeFfuelgas; c) typeNothergasesspecificforweldingprocesses. 5Installation Thequickactioncouplingswithshutoffvalvesshallbeinstalledsothattheelementwiththeshutoffdeviceis locatedupstreamintermsofthegasflowfromthesource. 6Design requirements 6.1 Dimensions,nonintercha
25、ngeabilityandinterchangeability Inordertoensurethat: a) elementsofdifferenttypes,and; b) elementsofdifferenttypesandcouplingsforcompressedair,accordingtoISO6150, arenotinterchangeable,quickactioncouplingswithshutoffvalvesaccordingtothisstandardshallhavethe dimensionsspecifiedinFigure1andTable1forcou
26、plingsoftypesO,FandN.EN561:2002(E) 6 Dimensionsandtolerancesofcoaxialityand perpendicularityinmillimeters,surfacesroughness valuesinmicrometers a Theminimumhardnessofthemaleelementsurfaceis270HV10fortheminimumlengthof15,2mm. b TheinternaldiameterCshallbeforaminimumlengthof20mm. Figure1Maleelement Ta
27、ble1Dimensionsofmaleelement Dimensionsinmillimeters Gas Type A h10 B h10 C a JS13 oxygen O 6,8 12,8 4,5 fuelgas F 7,3 12,3 5 othergases specificfor weldingprocesses N 6,3 13,3 4 a DiameterCshallbeobservedoveralengthof 20mm. ThedimensionsandfabricationdetailsnotspecifiedinFigure1andTable1arelefttothe
28、discretionofthe manufacturer,withtheprovisothatquickactioncouplingswithshutoffvalvesofthesametypeshallbe interchangeable,regardlessoftheirmanufacturer. 6.2 Configuration Theshutoffsystemshallbelocatedinthefemaleelementofthequickactioncoupling. 6.3 Couplinganduncoupling Thechoiceofthecouplinganduncou
29、plingmeansislefttothediscretionofthemanufacturer.EN561:2002(E) 7 Couplinganduncouplingshallbeachievedwitheaseandshallnotrequiretheuseoftools.Itshallnotbepossible todisengagethetwoelementsby: a) eitherasimplerotationofoneelementagainsttheother; b) ortheapplicationofalongitudinaltractionforceoflesstha
30、n1kN. Underserviceconditions,asdefinedbythemanufacturer,noundesireduncouplingshalloccur. Theopeningandclosureoftheshutoffsystemshalloccurautomatically. 6.4 Connections TheoutsidethreadedconnectionsshallconformwiththespecificationsgiveninEN560.Arighthandthreadshall beusedforcouplingsoftypesOandNandal
31、efthandthreadshallbeusedforcouplingsoftypeF. 6.5 Materials ThematerialsusedfortheconstructionofthesecouplingsshallconformwiththerequirementsgiveninEN29539. 6.6 Surfaceprotection Unlessotherwiseprotectedfromexternaldamagebymechanicalmeans,themaleelementshallbeconstructed frommaterialofasurfacehardnes
32、snotlessthan270HV10(Thisspecificationreferstothesurfacehardnessofthe standardizedexternalprofileoveralengthof15,2mm.). 7 Workingrequirements 7.1 Pressureresistance Quickactioncouplingswithshutoffvalvesshallbedesignedforamaximumworkingpressureof2MPa(20bar). Whentestedundertheconditionsgivenin9.2,they
33、shallwithstand: a) atestpressureof4MPa(40bar)withoutpermanentdeformation,and; b) atestpressureof6MPa(60bar)withoutrupture. 7.2 Gastightness 7.2.1 Generalrequirements ThegeneralrequirementsforgastightnessgiveninEN29090shallbesatisfied. 7.2.2 Specificrequirements Duringtestsperformedaccordingto9.3,the
34、measuredleakagerate,inboththecoupledandtheuncoupled position,shallnotexceed10cm 3 /h. 7.3 Pressuredrop Atthemaximumoperatingpressureandtheflowratespecifiedbythemanufacturer,thepressurelossintroduced bythequickactioncouplingswithshutoffvalvesshallnotexceed10%ofthemaximumoperatingpressure specified. 7
35、.4 Resistancetoflameflashback Afterhavingbeensubmittedtooneflashbackinaccordancewiththeconditionsspecifiedin9.4,quickaction couplingswithshutoffvalvesshallcontinuetoconformwiththerequirementsspecifiedinclause8.EN561:2002(E) 8 7.5 Resistancetotensileload Whentestedundertheconditionsindicatedin9.5,the
36、quickactioncouplingswithshutoffvalvesshall: a) remainsuitablefornormalserviceandfulfilthetestrequirementsspecifiedinthisEuropeanStandard,after havingbeensubmittedtoanaxialloadof600N,and; b) remaincoupledandgastightafterhavingbeensubmittedtoanaxialloadof1kN. 7.6 Resistancetoradialloads Whentestedunde
37、rconditionsindicatedin9.6,thequickactioncouplingswithshutoffvalvesshall: a) remainsuitablefornormalserviceandfulfilthetestrequirementsspecifiedinthisstandard,afterhavingbeen submittedtoaradialloadof1kN,and; b) remaincoupledandgastightafterhavingbeensubmittedtoaradialloadof2kN. 7.7 Endurance Whentest
38、edundertheconditionsspecifiedin9.7,thequickactioncouplingswithshutoffvalvesshallremaingas tightaftertheyhavebeensubmittedtoaminimumof1000coupling/uncouplingcyclesatamaximumworking pressure(see7.2). 7.8 Otherfunctions Incaseswhereaquickactioncouplingwithshutoffvalveisassociatedwithanyotherfunctiontha
39、nthosespecified inthisstandard,itshallcomplywiththerequirementsofclauses6and7andshallthenbetestedinaccordance withclause8and9afterithasmettherequirementsnecessarytoperformtheotherfunction. 8General test conditions 8.1 General Thetestsdescribedhereunderarethetypetests. Unlessotherwisespecified,theysh
40、allbeperformedatanambienttemperatureof(23 2)Cusingoilfreeairorin nitrogen.Thepressureresistancetestshallbeperformedunderhydraulicpressure. Eightsamplesofthequickactioncouplingswithshutoffvalvesshallbetested.Thetwoelementsofeachofthese samplesshallbecarefullymarkedtoensurethatalltestsareperformedusin
41、gthesamepairofelements. Figures2to4showtheprincipleofthetensileloadtestandexamplesofthetestrigsforgastightnessand resistancetoradialloads.EN561:2002(E) 9 Dimensionsinmillimetres Key 1 2 3 4 5 6 Rodconnectedtothemaleelement Fixturetoholdfemaleelement Pressure(2MPa(20bar);0,02MPa(0,2bar) Coupledtestco
42、upling Centrelineoflockingdevice 40Nloadperpendiculartothecouplingcentreline Figure2Testrigforthegastightnesstestinthecoupledposition internalpressure2MPa(20bar) Key 1 F Threadedortappedparts Tensileload Figure3PrincipleofthetensileloadtestEN561:2002(E) 10 Dimensionsinmillimetres Key 1 2 3 4 5 6 7 L
43、oad Couplingtobetested Circulategasatapressureof2MPa(20bar) Support Loadingcounterplate Rubberplate(chlorophrene,shorehardness80IRHD) Steelbaseofthesupport Figure4Rigfortestingunderradialloads 8.2 Testsequence Eachoftheeightsamplesshallbesubmittedtothetestsdescribedinclause9,asindicatedbythecrossesin Table2.ThetestsshallbeperformedinthesequenceshowninTable2withthetestseriesbeingperformedin alphabeticalorder;onesampleshallbeusedforeachtestseriesA,B,andCandfivesamplesshallbeusedfor testseriesD.EN561:2002(E) 11 Table2Testsequenceandtestseries Subclause Tests
