1、March 2013 Translation by DIN-Sprachendienst.English price group 23No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS
2、23.080!$rU“1957950www.din.deDDIN EN ISO 9906Rotodynamic pumps Hydraulic performance acceptance tests Grades 1, 2 and 3 (ISO 9906:2012);English version EN ISO 9906:2012,English translation of DIN EN ISO 9906:2013-03Kreiselpumpen Hydraulische Abnahmeprfungen Klassen 1, 2 und 3 (ISO 9906:2012);Englisch
3、e Fassung EN ISO 9906:2012,Englische bersetzung von DIN EN ISO 9906:2013-03Pompes rotodynamiques Essais de fonctionnement hydraulique pour la rception Niveaux 1, 2 et 3 (ISO 9906:2012);Version anglaise EN ISO 9906:2012,Traduction anglaise de DIN EN ISO 9906:2013-03SupersedesDIN EN ISO 9906:2002-08ww
4、w.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 64 pages02.13 DIN EN ISO 9906:2013-03 2 A comma is used as the decimal marker. National foreword This document (EN ISO 9906:2012) has been prepared by Technical Committee ISO/TC 115 “Pumps”
5、in collaboration with Technical Committee CEN/TC 197 “Pumps” (Secretariat: AFNOR, France). The responsible German body involved in its preparation was the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-11-01 AA Kreiselpumpen of Section Pumpen. Rep
6、resentatives of manufacturers and users of pumps, and of the employers liability insurance associations contributed to this standard. The International Standards referred to in this document and taken over as European Standards have been published as the corresponding DIN EN ISO Standards with the s
7、ame number. Amendments This standard differs from DIN EN ISO 9906:2002-08 as follows: a) Clause 1 “Scope” has been extended to include three levels of acceptance; b) Clause 2 “Normative references” has been updated; c) Clause 3 “Terms, definitions, symbols and subscripts” has been revised; d) Subcla
8、use 4.3 “Measurement uncertainty” has been revised (e.g. amplitudes of fluctuation, acceptance grades and tolerances); e) annexes have been rearranged; Annex A (normative) “Test arrangements”; new Annex D “Measurement equipment” and new Annex H “Witnessed pump test”; f) the Bibliography has been upd
9、ated. Previous editions DIN 1944: 1938, 1943, 1952, 1968-10 DIN EN ISO 9906: 2002-08 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9906 May 2012 ICS 23.080 Supersedes EN ISO 9906:1999English Version Rotodynamic pumps - Hydraulic performance acceptance tests -Grades 1, 2 and 3 (ISO 9906:20
10、12) Pompes rotodynamiques - Essais de fonctionnement hydraulique pour la rception - Niveaux 1, 2 et 3 Kreiselpumpen - Hydraulis che Abnahmepr fung - This European Standard was approved by CEN on 16 March 2012. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate
11、the conditions for giving 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 Standa
12、rd exists in three official 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 natio
13、nal standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerl
14、and, Turkey and United Kingdom. Management Centre: Avenue Marnix 17, B-1000 Brussels 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 9906:2012: EEUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPIS
15、CHES KOMITEE FR NORMUNG (ISO 9906:2012) Klassen 1, 2 und 3 (ISO 9906:2012) Contents Page Foreword . 3 Introduction . 4 1 Scope . 5 2 Normative references. 5 3 Terms, definitions, symbols and subscripts . 5 3.1 Terms and definitions 5 3.2 Terms relating to quantities 7 3.3 Symbols and subscripts 13 4
16、 Pump measurements and acceptance criteria 14 4.1 General 14 4.2 Guarantees 15 4.3 Measurement uncertainty 15 4.4 Performance test acceptance grades and tolerances 19 4.5 Default test acceptance grades for pump application . 25 5 Test procedures . 26 5.1 General 26 5.2 Date of testing 26 5.3 Test pr
17、ogramme . 26 5.4 Testing equipment . 26 5.5 Records and report 26 5.6 Test arrangements . 27 5.7 Test conditions . 27 5.8 NPSH tests 27 6 Analysis . 30 6.1 Translation of the test results to the guarantee conditions 30 6.2 Obtaining specified characteristics . 31 Annex A (normative) Test arrangement
18、s 32 Annex B (informative) NPSH test arrangements. 41 Annex C (informative) Calibration intervals 44 Annex D (informative) Measurement equipment 45 Annex E (informative) Tests performed on the entire equipment set String test . 50 Annex F (informative) Reporting of test results 52 Annex G (informati
19、ve) Special test methods . 56 Annex H (informative) Witnessed pump test . 57 Annex I (informative) Conversion to SI units 58 Annex J (informative) Measurement uncertainty for NPSH test . 60 Bibliography 61 2DIN EN ISO 9906:2013-03 EN ISO 9906:2012 (E) Foreword This document (EN ISO 9906:2012) has be
20、en prepared by Technical Committee ISO/TC 115 Pumps in collaboration with Technical Committee CEN/TC 197 “Pumps” the secretariat of which is held by AFNOR. This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the la
21、test by November 2012, and conflicting national standards shall be withdrawn at the latest by November 2012. 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 a
22、ll such patent rights. This document supersedes EN ISO 9906:1999. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Es
23、tonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, 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 9906:2012 has been approv
24、ed by CEN as a EN ISO 9906:2012 without any modification. “ ”3DIN EN ISO 9906:2013-03 EN ISO 9906:2012 (E) IntroductionThe tests in this International Standard are intended to ascertain the performance of the pump and to compare this with the manufacturers guarantee.The nominated guarantee for any q
25、uantity is deemed to have been met if, where tested according to this International Standard, the measured performance falls within the tolerance specified for the particular quantity (see 4.4).4DIN EN ISO 9906:2013-03 EN ISO 9906:2012 (E) 1 ScopeThis International Standard specifies hydraulic perfo
26、rmance tests for customers acceptance of rotodynamic pumps (centrifugal, mixed flow and axial pumps, hereinafter “pumps”).This International Standard is intended to be used for pump acceptance testing at pump test facilities, such as manufacturers pump test facilities or laboratories.It can be appli
27、ed to pumps of any size and to any pumped liquids which behave as clean, cold water.This International Standard specifies three levels of acceptance: grades 1B, 1E and 1U with tighter tolerance; grades 2B and 2U with broader tolerance; grade 3B with even broader tolerance.This International Standard
28、 applies either to a pump itself without any fittings or to a combination of a pump associated with all or part of its upstream and/or downstream fittings.2 Normative referencesThe following referenced documents are indispensable for the application of this document. For dated references, only the e
29、dition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies.ISO 17769-1, Liquid pumps and installation General terms, definitions, quantities, letter symbols and units Part 1: Liquid pumpsISO 17769-2, Liquid pumps and installation Ge
30、neral terms, definitions, quantities, letter symbols and units Part 2: Pumping system3 Terms, definitions, symbols and subscripts3.1 Terms and definitionsFor the purposes of this document, the terms, definitions, quantities and symbols given in ISO 17769-1 and 17769-2 and the following apply.NOTE 1
31、Table 1 gives an alphabetical list of the symbols used and Table 2 gives a list of subscripts; see 3.3.NOTE 2 All formulae are given in coherent SI units. For conversion of other units to SI units, see Annex I.3.1.1 General terms NOTE All of the types of test in 3.1.1 apply to guarantee point to ful
32、fil the customers specification(s).3.1.1.1guarantee pointflow/head (Q/H) point, which a tested pump shall meet, within the tolerances of the agreed acceptance class5DIN EN ISO 9906:2013-03 EN ISO 9906:2012 (E) 3.1.1.2factory performance testpump test performed to verify the initial performance of ne
33、w pumps as well as checking for repeatability of production units, accuracy of impeller trim calculations, performance with special materials, etc.NOTE A typical performance test consists of the measurement of flow, head and power input to the pump or pump test motor. Additional measurements, such a
34、s NPSH, may be included as agreed upon. A factory test is understood to mean testing at a dedicated test facility, often at a pump manufacturers plant or at an independent pump test facility.3.1.1.3non-witnessed pump test3.1.1.3.1factory testtest performed without the presence of a purchasers repres
35、entative, in which the pump manufacturer is responsible for the data collection and judgement of pump acceptanceNOTE The advantage of this test is cost savings and accelerated pump delivery to the pump user. In many cases, if the purchaser is familiar with the performance of the pump (e.g. identical
36、 pump model order), a factory non-witnessed test may be acceptable.3.1.1.3.2signed factory testtest performed without the presence of a purchasers representative, in which the pump manufacturer is responsible for compliance with the parameters of the agreed acceptance class NOTE The pump manufacture
37、r conducts the test, passes judgement of pump acceptance and produces a signed pump test document. The advantage of this test is the same as seen on the non-witnessed test. Compared to a witnessed test, this test is substantially less expensive and often leads to accelerated pump delivery to the end
38、 user.3.1.1.4witnessed pump testNOTE The witnessing of a pump test by a representative of the pump purchaser can serve many useful functions. There are various ways of witnessing a test.3.1.1.4.1witnessing by the purchasers representativetesting physically attended by a representative of the purchas
39、er, who signs off on the raw test data to certify that the test is performed satisfactorilyNOTE It is possible for final acceptance of the pump performance to be determined by the witness. The benefit of witness testing depends largely on the effectiveness and expertise of the witness. A witness can
40、not only ensure the test is conducted properly, but also observes operation of the pump during testing prior to pump shipment to the job site. A disadvantage of witness testing can be extended delivery times and excessive cost. With just-in-time manufacturing methods, the scheduling of witness testi
41、ng requires flexibility on the part of the witness and can lead to additional costs if the schedule of the witness causes delays in manufacturing.3.1.1.4.2remote witnessing by the purchasers representativepump performance testing witnessed from a distance by the purchaser or his/her representativeNO
42、TE With a remote camera system, the purchaser can monitor the entire testing remotely in real-time. The raw data, as recorded by the data acquisition system, can be viewed and analysed during the test, and the results can be discussed and submitted for approval. The advantages of this type of testin
43、g are savings in travel costs and accelerated pump delivery.6DIN EN ISO 9906:2013-03 EN ISO 9906:2012 (E) 3.2 Terms relating to quantities3.2.1angular velocitynumber of radians of shaft rotationNOTE 1 It is given by: =2pin (1)NOTE 2 It is expressed in time, e.g. s-1, where n is given in 60 min-1.3.2
44、.2speed of rotationnumber of rotations per second3.2.3mass flow raterate of flow discharged into the pipe from the outlet connection of the pumpNOTE 1 The mass flow rate is given in kilograms per second.NOTE 2 The following losses or limiting effects are inherent to the pump:a) discharge necessary f
45、or hydraulic balancing of axial thrust;b) cooling of the pump bearings.NOTE 3 Leakage from the fittings, internal leakage, etc., are not to be reckoned in the rate of flow. On the contrary, all derived flows for other purposes, such asa) cooling of the motor bearings, andb) cooling of a gear box (be
46、arings, oil cooler)are to be reckoned in the rate of flow.NOTE 4 Whether and how these flows should be taken into account depends on the location of their derivation and of the section of flow-measurement respectively.3.2.4volume rate of flowrate of flow at the outlet of the pump, given by:Qq=(2)NOT
47、E In this International Standard, this symbol may also designate the volume rate of flow in any given section. It is the quotient of the mass rate of flow in this section by the density. (The section may be designated by subscripts.)3.2.5mean velocitymean value of the axial speed of flow, given by:
48、UQA= (3)NOTE Attention is drawn to the fact that in this case, Q may vary for different reasons across the circuit.3.2.6local velocityspeed of flow at any given point7DIN EN ISO 9906:2013-03 EN ISO 9906:2012 (E) 3.2.7headenergy of mass of liquid, divided by acceleration due to gravity, g, given by:H
49、yg= (4)See 3.2.16.3.2.8reference planeany horizontal plane used as a datum for height measurementNOTE For practical reasons, it is preferable not to specify an imaginary reference plane.3.2.9height above reference planeheight of the considered point above the reference planeSee Figure A.1.NOTE Its value is: positive, if the considered point is above the reference plane; negative, if the considered point is below the reference plane.3.2.10gauge pressu
