1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 9906:2012Rotodynamic pumps Hydraulic performanceacceptance tests Grades 1, 2and 3 (ISO 9906:2012)BS EN ISO 9906:2012 BRITISH STANDARDNational forewordThis British Stand
2、ard is the UK implementation of EN ISO 9906:2012.It supersedes BS EN ISO 9906:2000 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/6, Pumps and pump testing.A list of organizations represented on this committee can beobtained on request to its secre
3、tary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. The British Standards Institution 2012. Published by BSI StandardsLimited 2012ISBN 978 0 580 58832 7ICS 23.080Compliance with a British Standard cannot confe
4、r immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 31 May 2012.Amendments issued since publicationDate Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 9906 May 2012 ICS 23.080 Supersedes EN I
5、SO 9906:1999English Version Rotodynamic pumps - Hydraulic performance acceptance tests -Grades 1, 2 and 3 (ISO 9906:2012) Pompes rotodynamiques - Essais de fonctionnement hydraulique pour la rception - Niveaux 1, 2 et 3 (ISO 9906:2012) Kreiselpumpen -Hydraulische Abnahmeprfung - Klassen 1, 2 und 3 (
6、ISO 9906:2012) 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 the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and biblio
7、graphical 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 official versions (English, French, German). A version in any other language made by translation under the responsi
8、bility 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 of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greec
9、e, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG M
10、anagement 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: EBS EN ISO 9906:2012EN ISO 9906:2012 (E) 3 Foreword This document (EN ISO 9906:2012) has been prepared by Techn
11、ical 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 latest by November 2
12、012, 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 all such patent rig
13、hts. 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, Estonia, Finland, Fr
14、ance, 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 approved by CEN as a EN
15、ISO 9906:2012 without any modification. BS EN ISO 9906:2012ISO 9906:2012(E) ISO 2012 All rights reserved iiiContents PageForeword ivIntroduction v1 Scope 12 Normative references . 13 Terms, definitions, symbols and subscripts 13.1 Terms and definitions . 13.2 Terms relating to quantities 33.3 Symbol
16、s and subscripts 94 Pump measurements and acceptance criteria 104.1 General .104.2 Guarantees 114.3 Measurement uncertainty . 114.4 Performance test acceptance grades and tolerances .154.5 Default test acceptance grades for pump application 215 Test procedures .225.1 General .225.2 Date of testing 2
17、25.3 Test programme .225.4 Testing equipment .225.5 Records and report .225.6 Test arrangements 235.7 Test conditions .235.8 NPSH tests 236 Analysis .266.1 Translation of the test results to the guarantee conditions .266.2 Obtaining specified characteristics .27Annex A (normative) Test arrangements
18、28Annex B (informative) NPSH test arrangements 37Annex C (informative) Calibration intervals 40Annex D (informative) Measurement equipment 41Annex E (informative) Tests performed on the entire equipment set String test .46Annex F (informative) Reporting of test results .48Annex G (informative) Speci
19、al test methods .52Annex H (informative) Witnessed pump test .53Annex I (informative) Conversion to SI units 54Annex J (informative) Measurement uncertainty for NPSH test 56Bibliography .57BS EN ISO 9906:2012ISO 9906:2012(E)ForewordISO (the International Organization for Standardization) is a worldw
20、ide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on th
21、at committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization.International Standards are drafted in a
22、ccordance with the rules given in the ISO/IEC Directives, Part 2.The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard req
23、uires approval by at least 75 % of the member bodies casting a vote.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 held responsible for identifying any or all such patent rights.ISO 9906 was prepared by Technical
24、 Committee ISO/TC 115, Pumps, Subcommittee SC 2, Methods of measurement and testing.This second edition cancels and replaces the first edition (ISO 9906:1999), which has been technically revised.iv ISO 2012 All rights reservedBS EN ISO 9906:2012ISO 9906:2012(E)IntroductionThe tests in this Internati
25、onal Standard are intended to ascertain the performance of the pump and to compare this with the manufacturers guarantee.The nominated guarantee for any quantity is deemed to have been met if, where tested according to this International Standard, the measured performance falls within the tolerance
26、specified for the particular quantity (see 4.4). ISO 2012 All rights reserved vBS EN ISO 9906:2012BS EN ISO 9906:2012Rotodynamic pumps Hydraulic performance acceptance tests Grades 1, 2 and 31 ScopeThis International Standard specifies hydraulic performance tests for customers acceptance of rotodyna
27、mic 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 applied to pumps of any size and to any pumped liquids
28、 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 applies either to a pump itself without any fitt
29、ings 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 edition cited applies. For undated references, the
30、 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 General terms, definitions, quantities, letter symb
31、ols 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 Table 1 gives an alphabetical list of the symbols
32、 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 fulfil the customers specification(s).3.1.1.1guarant
33、ee pointflow/head (Q/H) point, which a tested pump shall meet, within the tolerances of the agreed acceptance classINTERNATIONAL STANDARD ISO 9906:2012(E) ISO 2012 All rights reserved 1BS EN ISO 9906:2012ISO 9906:2012(E)3.1.1.2factory performance testpump test performed to verify the initial perform
34、ance of new 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 measuremen
35、ts, such as 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 purchas
36、ers representative, 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.
37、 identical 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 m
38、anufacturer 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
39、to the end 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 t
40、he purchaser, 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 w
41、itness cannot 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 wit
42、ness testing 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 repres
43、entativeNOTE 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
44、 of testing are savings in travel costs and accelerated pump delivery.2 ISO 2012 All rights reservedBS EN ISO 9906:2012ISO 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, whe
45、re n is given in 60 min-1.3.2.2speed 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
46、pump:a) discharge necessary for 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, an
47、db) cooling of a gear box (bearings, 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
48、 the pump, given by:Qq=(2)NOTE 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 ax
49、ial speed of flow, given by: 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 point ISO 2012 All rights reserved 3BS EN ISO 9906:2012ISO 9906:2012(E)3.2.7headenergy of mass of liquid, divided by acceleration due to gravity, g, given by:Hyg= (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 pla
