BS EN 14359-2006 Gas-loaded accumulators for fluid power applications.pdf
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1、BRITISH STANDARD BS EN 14359:2006 Gas-loaded accumulators for fluid power applications The European Standard EN 14359:2006 has the status of a British Standard ICS 17.040.30 ? Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Mar 12 23:16:24 GMT+00:00 2007, Uncontrolled C
2、opy, (c) BSI BS EN 14359:2006 This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 November 2006 BSI 2006 ISBN 0 580 49618 X National foreword This British Standard was published by BSI. It is the UK implementation of EN 14359:2006. It supersed
3、es BS 7201-1:1989 which is withdrawn. The UK participation in its preparation was entrusted by Technical Committee MCE/18, Fluid power systems and components, to Subcommittee MCE/18/-/1, Accumulators. A list of organizations represented on MCE/18/-/1 can be obtained on request to its secretary. This
4、 publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Amendments issued since publication Amd. No. DateComments Licensed Copy: Institute
5、 Of Technology Tallaght, Institute of Technology, Mon Mar 12 23:16:24 GMT+00:00 2007, Uncontrolled Copy, (c) BSI EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 14359 October 2006 ICS 17.040.30 English Version Gas-loaded accumulators for fluid power applications Accumulateurs hydropneumatiques
6、pour transmissions hydrauliques Hydrospeicher fr Hydraulikanwendungen This European Standard was approved by CEN on 18 September 2006. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national s
7、tandard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any othe
8、r language made by translation under the responsibility of a CEN member into its own language and notified to the Central Secretariat has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Cyprus, Czech Republic, Denmark, Estonia, Finland, Fr
9、ance, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE
10、FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2006 CENAll rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 14359:2006: E Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Mar 12 23:16:24 GMT+0
11、0:00 2007, Uncontrolled Copy, (c) BSI EN 14359:2006 (E) 2 Contents Page Foreword5 1Scope.6 2Normative references 7 3Terms, definitions, symbols, units and abbreviated terms.8 3.1Terms and definitions8 3.2Symbols, units and abbreviated terms9 3.2.1General9 3.2.2Inter-relation of thickness definitions
12、10 4Materials10 4.1Requirements for metallic materials10 4.2Material certificates for components of the pressure containing envelope11 5Basic design and calculation criteria.11 5.1General11 5.2Corrosion11 5.3Qualification by similarity .11 5.4Design methods .11 5.4.1General11 5.4.2Basic symbols, uni
13、ts and description .12 5.4.3Maximum allowable values for the nominal design stress for pressure bearing parts.13 5.5Design and calculation methods common to all accumulator types .13 5.5.1General13 5.5.2Specific definitions13 5.5.3Cylindrical shells14 5.5.4Dished ends under internal pressure 14 5.5.
14、5Isolated openings and nozzles in spherical shells and spherical centre areas of dished ends 17 5.5.6Thread calculation .23 5.6Specific design criteria for piston accumulators .25 5.6.1Threaded end caps 25 5.6.2Tie-rod retained end caps .30 5.6.3Split-ring retained end caps32 5.7Specific design crit
15、eria for diaphragm accumulators35 5.7.1General35 5.7.2Two-part screwed shell design.36 5.7.3Three-part screwed shell design38 5.7.4Gas-precharging openings .42 5.8Specific design criteria for oil ports mainly used in bladder type accumulators .43 5.8.1General43 5.8.2Oil port design and calculation 4
16、3 6Manufacture46 6.1General46 6.2Special manufacturing processes for welded diaphragm accumulators 46 6.2.1General46 6.2.2Requirements for the use of permanent backing strips46 6.2.3Electron and laser beam welding.47 6.2.4Welded nozzles 47 6.2.5Heat treatment47 6.2.6Approval of special welding proce
17、dures.48 Licensed Copy: Institute Of Technology Tallaght, Institute of Technology, Mon Mar 12 23:16:24 GMT+00:00 2007, Uncontrolled Copy, (c) BSI ? EN 14359:2006 (E) 3 6.2.7Qualification of welding procedure specifications.48 6.2.8Verification and utilization of welding procedure specifications when
18、 applied to welding machines48 6.3Forming of bladder accumulator shells.48 6.3.1Processes .48 6.3.2Heat treatment49 6.3.3Verification of mechanical properties49 6.3.4Visual and ultrasonic examination.50 7Inspection and testing.51 7.1General51 7.2Design documentation 51 7.3Design review and design ex
19、amination.52 7.4Inspection during manufacture 52 7.5Hydrostatic pressure test52 7.6Fatigue test.53 7.6.1General53 7.6.2Basic symbols and units.53 7.6.3Test equipment and preparation of test accumulator54 7.6.4Accuracy.55 7.6.5Test conditions and procedure 55 7.6.6Method of evaluating and interpretin
20、g fatigue test results using the gradient of the stress-number curve and a probability of failure .57 7.6.7Fatigue assessment of gas loaded accumulators Guarantee factor method)63 7.7Marking and labelling 70 7.7.1General70 7.7.2Marking method .71 7.7.3Marking contents .71 7.7.4Information labelling7
21、1 7.8Documentation.71 7.8.1General71 7.8.2Process records.72 8Safety instructions and equipment for accumulators72 8.1Introduction 72 8.2Safety equipment.72 8.2.1General72 8.2.2Limitation of pressure .73 8.2.3Pressures gauges74 8.2.4Shut-off devices.74 8.2.5Fluid side pressure release devices 74 8.2
22、.6Gas side release devices 74 8.3Tests and examinations before first operation.75 8.3.1Examination of documentation including instructions for first operation, stamps and CE-marks.75 8.3.2Examination of proper mounting .75 8.3.3Examination of safety equipment.75 8.4Supervision and maintenance76 Anne
23、x A (informative) Categories of gas-loaded accumulators including reference to modules of conformity assessment.77 Annex B (informative) Summary of activities in respect to conformity assessment modules 78 Annex C (informative) Examples of safety equipment configuration 79 Annex D (informative) Manu
24、facturers declaration of conformity form .86 Annex E (informative) Example of the application of the method of evaluating and interpreting fatigue test results carried out on complete accumulators .87 E.1General87 E.1.1General87 E.1.2Consider a population of accumulators with the following character
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