EN ISO 14114-2014 en Gas welding equipment - Acetylene manifold systems for welding cutting and allied processes - General requirements《气焊设备 焊接 切割和类似工艺的乙炔汇流系统 一般要求(ISO 14114 2014)》.pdf

1、BSI Standards PublicationBS EN ISO 14114:2014Gas welding equipment Acetylene manifold systemsfor welding, cutting andallied processes Generalrequirements (ISO 14114:2014)BS EN ISO 14114:2014 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO14114:2014. It super

2、sedes BS EN ISO 14114:1999 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee WEE/18, Gas welding and cutting appliances.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to i

3、nclude all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2014. Published by BSI StandardsLimited 2014ISBN 978 0 580 82948 2ICS 25.160.30Compliance with a British Standard cannot confer immunity fromlegal obligations.This Br

4、itish Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2014.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 14114 May 2014 ICS 25.160.30 Supersedes EN ISO 14114:1999English Version Gas wel

5、ding equipment - Acetylene manifold systems for welding, cutting and allied processes - General requirements (ISO 14114:2014) Matriel de soudage aux gaz - Centrales de dtente pour la distribution dactylne pour le soudage, le coupage et les techniques connexes - Exigences gnrales (ISO 14114:2014) Gas

6、schweigerte - Acetylen-Batterieanlagen fr Schweien, Schneiden und verwandte Verfahren - Allgemeine Anforderungen (ISO 14114:2014) This European Standard was approved by CEN on 6 March 2014. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for g

7、iving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three o

8、fficial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies

9、 of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spai

10、n, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG CEN-CENELEC Management Centre: Avenue Marnix 17, B-1000 Brussels 2014 CEN All rights of exploitation in any form and by any means reserved worldwide

11、 for CEN national Members. Ref. No. EN ISO 14114:2014 EBS EN ISO 14114:2014EN ISO 14114:2014 (E) 3 Foreword This document (EN ISO 14114:2014) has been prepared by Technical Committee ISO/TC 44 “Welding and allied processes“ in collaboration with Technical Committee CEN/TC 121 “Welding and allied pro

12、cesses” the secretariat of which is held by DIN. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by November 2014, and conflicting national standards shall be withdrawn at the latest by November 2014

13、. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall not be held responsible for identifying any or all such patent rights. This document supersedes EN ISO 14114:1999. According to the CEN-CENELEC Internal Re

14、gulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland,

15、 Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 14114:2014 has been approved by CEN as EN ISO 14114:2014 without any modification. BS EN ISO

16、 14114:2014ISO 14114:2014(E) ISO 2014 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope . 12 Normative references 13 Terms and definitions . 13.3 Pressure, p 23.6 Low pressure valves . 23.7 High pressure valves 24 Design and materials . 44.1 Requirements for the manifold system an

17、d its components. 44.2 Materials of construction . 45 Tests . 45.1 Strength test 45.2 External gas tightness test 55.3 Decomposition blocker 56 Marking 57 Instructions for use . 6Annex A (normative) Configurations of acetylene manifold systems 7Annex B (informative) Test procedure for decomposition

18、blocker.13BS EN ISO 14114:2014ISO 14114:2014(E)ForewordISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each mem

19、ber body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International El

20、ectrotechnical Commission (IEC) on all matters of electrotechnical standardization.The procedures used to develop this document and those intended for its further maintenance are described in the ISO/IEC Directives, Part 1. In particular the different approval criteria needed for the different types

21、 of ISO documents should be noted. This document was drafted in accordance with the editorial rules of the ISO/IEC Directives, Part 2 (see www.iso.org/directives). Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be h

22、eld responsible for identifying any or all such patent rights. Details of any patent rights identified during the development of the document will be in the Introduction and/or on the ISO list of patent declarations received (see www.iso.org/patents). Any trade name used in this document is informat

23、ion given for the convenience of users and does not constitute an endorsement.For an explanation on the meaning of ISO specific terms and expressions related to conformity assessment, as well as information about ISOs adherence to the WTO principles in the Technical Barriers to Trade (TBT) see the f

24、ollowing URL: Foreword - Supplementary informationThe committee responsible for this document is ISO/TC 44, Welding and allied processes, Subcommittee SC 8, Equipment for gas welding, cutting and allied processes.This second edition cancels and replaces the first edition (ISO 14114:1999), which has

25、been technically revised.iv ISO 2014 All rights reservedBS EN ISO 14114:2014ISO 14114:2014(E)IntroductionRequests for official interpretations of any aspect of this standard should be directed to the Secretariat of ISO/TC 44/SC 8 via your national standards body, a complete listing which can be foun

26、d at www.iso.org. ISO 2014 All rights reserved vBS EN ISO 14114:2014BS EN ISO 14114:2014Gas welding equipment Acetylene manifold systems for welding, cutting and allied processes General requirements1 ScopeThis standard applies to acetylene cylinder manifold systems extending from the cylinder valve

27、 or the bundle outlet connections to the outlet connection of the main shut-off valve. It specifies requirements for design, materials and testing of cylinder manifold systems for the supply of acetylene for use in welding, cutting and allied processes.This standard applies to acetylene cylinder man

28、ifold systems in which acetylene single cylinders or acetylene bundles are coupled for collective gas withdrawal. NOTE National regulations exist regarding limitation of the amount of single cylinders/bundles.This standard also covers a test procedure for decomposition blocker.2 Normative references

29、The following documents, in whole or in part, are normatively referenced in this document and are indispensable for its application. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 5175

30、, Equipment used in gas welding, cutting and allied processes Safety devices for fuel gases and oxygen or compressed air General specifications, requirements and testsISO 7291:2010, Gas welding equipment Pressure regulators for manifold systems used in welding, cutting and allied processes up to 30

31、MPa (300 bar)ISO 9539, Gas welding equipment Materials for equipment used in gas welding, cutting and allied processesISO 14113, Gas welding equipment Rubber and plastics hose and hose assemblies for use with industrial gases up to 450 bar (45 MPa)ISO 15296:2004, Gas welding equipment Vocabulary Ter

32、ms used for gas welding equipmentISO 15615:2013, Gas welding equipment Acetylene manifold systems for welding, cutting and allied processes Safety requirements in high-pressure devicesISO 10961, Gas cylinders Cylinder bundles Design, manufacture, testing and inspection3 Terms and definitionsFor the

33、purposes of this document, the terms and definitions given in ISO 15296 and the following apply.3.1acetylene manifold systemsassembly of devices generally linking one or more gas sources coupled to a user pipeline system, delivering a regulated pressure under specified safe conditionsNote 1 to entry

34、: A manifold includes for example components like collectors, safety devices, and pressure regulators.INTERNATIONAL STANDARD ISO 14114:2014(E) ISO 2014 All rights reserved 1BS EN ISO 14114:2014ISO 14114:2014(E)3.2acetylene cylinder bundleacetylene cylinder packassembly of cylinders fastened together

35、, interconnected by a manifold for collective filling and gas withdrawal, and intended to be transported as a single unit3.3 Pressure, p3.3.1high pressurep 1,5 bar (0,15 MPa) up to 25 bar (2,5 MPa)Note 1 to entry: All pressures are given as gauge pressures.3.3.2low pressurep 1,5 bar (0,15 MPa)Note 1

36、 to entry: All pressures are given as gauge pressures.3.4manifold high pressure pipeworkpipework system extending from the outlet connection of acetylene cylinders or bundles at full charging pressure to the inlet of the pressure regulator, including as required hose assemblies or coiled metal pipes

37、, piping and high pressure valves3.5flame arrestordevice which arrests a flame frontSOURCE: ISO 15296:2004, 2.4.3, modified3.6 Low pressure valves3.6.1temperature-sensitive cut-off devicedevice which stops the gas flow when a predetermined temperature is reachedSOURCE: ISO 15296:2004, 2.4.5, modifie

38、d3.6.2pressure-sensitive cut-off devicedevice which interrupts the gas flow in the event of a back pressure wave from the downstream sideSOURCE: ISO 15296:2004, 2.4.6, modified3.6.3main shut-off valvemain valve downstream of the system3.7 High pressure valves3.7.1quick-acting shut-off devicesafety d

39、evice which prevents the continued withdrawal of acetylene and/or gaseous products of decomposition from the manifold system if an acetylene decomposition or a flashback occurs2 ISO 2014 All rights reservedBS EN ISO 14114:2014ISO 14114:2014(E)3.7.1.1manual quick acting shut-off valvemanually activat

40、ed device to quickly stop the gas flowSOURCE: ISO 15296:2004, 2.4.93.7.1.2automatic quick acting shut-off deviceself-acting device which closes quickly, e.g. when triggered by acetylene decomposition in the high pressure manifold pipework3.7.2high pressure stop valvedevice to prevent, when closed, t

41、he flow of gas on the high pressure side3.8pressure limiting devicedevice which limits the pressure downstream of the manifold regulator in the event of regulator failure or malfunctionNote 1 to entry: Examples of such devices are: (a) relief valve, (b) pressure actuated shut-off valves, (c) manual

42、or automatic systems to cut the flow, (d) pressure actuated venting device.3.9non-return valvedevice which prevents passage of gas in the direction opposite to normal flowSOURCE: ISO 15296:2004, 2.4.2, modified3.10purge valvedevice which enable a pipework system to reach atmospheric pressure or elim

43、inate undesirable gases or residues by flushing3.11change-over unitdevice in a two sided system allowing switching the supply of gas from the system to either of its bank of cylinders or bundles without interrupting supplyNote 1 to entry: The switching action can be manually or automatically actuate

44、d3.12three way valvedevice which allows gas flow from one side of the high pressure manifold to enter the regulator while isolating flow from the second side3.13pressure regulator for manifold systemsdevice for regulating a generally variable inlet pressure to as constant as possible an outlet press

45、ure when controlling the output of a manifold of cylindersSOURCE: ISO 7291:2010, 3.13.14decomposition blockersafety device which stops acetylene decomposition incorporating a thermal or pressure-sensitive cut-off valve3.15high pressure filterdevice to retain particles with a size of 100 m or greater

46、 ISO 2014 All rights reserved 3BS EN ISO 14114:2014ISO 14114:2014(E)4 Design and materials4.1 Requirements for the manifold system and its componentsAcetylene cylinder manifold systems shall be equipped with the following system components:a) high pressure non-return valve according to ISO 15615 to

47、avoid non-return flows and to prevent air and moisture contamination of the manifold system, located immediately downstream of the cylinder or bundle outlet. Alternatively combination of purge valve and non-return valve located downstream of the coiled metal pipe or high pressure hose can be used;b)

48、 high pressure pipework or coiled metal pipe with pipe wall thicknesses determined according to the methods in ISO 10961 to connect the cylinder or bundle outlet to the manifold inlet, including high pressure hoses according to ISO 14113;c) manual (only possible for systems up to 2 8 cylinders) or a

49、utomatic quick acting shut-off valves according to ISO 15615 upstream of the manifold regulator;d) for a one side system, a high pressure stop valve according to ISO 15615:2013, 3.7 shall be used. For a two side system, a three way valve according to ISO 15615:2013, 3.6 can be used instead of the two high pressure stop valves according to ISO 15615:2013, 3.7;e) pressure regulators for manifold systems according to ISO 7291 or for change over units;f) pressure limiting device according to ISO 5175 downstre