1、BRITISH STANDARD BS EN ISO9905:1998Technical specifications for centrifugal pumps Class IICS 23.080Incorporating corrigendum July 2006+A1:2011National forewordThis British Standard is the UK implementation of EN ISO 9905:1998+A1:2011. It supersedes BS EN ISO 9905:1998, which is withdrawn.The start a
2、nd finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to ISO text carry the number of the ISO amendment. For example, text altered by ISO amendment 1 is indicated by !“ tags.TThe UK participation in its preparation was entrusted to Technical C
3、ommittee MCE/6, Pumps and pump testing.A list of organizations represented on this committee can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application.Compliance with a Britis
4、h Standard cannot confer immunity from legal obligations.BS EN ISO 9905:1998+A1:2011This British Standard, havingbeen prepared under thedirection of the EngineeringSector Board, was publishedunder the authority of theStandards Board and comesinto effect on15 October 1994 BSI 2011The following BSI re
5、ferencesrelate to the work on thisstandard:Committee reference MCE/6Draft for comment 91/76635 DCAmendments/corrigenda issued since publicationAmd. No. Date Comments 9864 February 1998 Renumbers BS 7784:1994 as BS EN ISO 9905:199816277Corrigendum No. 131 July 2006 Changes to Clause 1 and addition to
6、 bibliography31 July 2011 Implementation of ISO amendment 1:2011 with CEN endorsement A1:2011ISBN 978 0 580 72930 0iContentsPageCommittees responsible Inside front coverNational foreword iii1Scope 32Normative references 33Definitions 34Design 65Materials 246Shop inspection and tests 257Preparation f
7、or dispatch 288Responsibilities 28Annex A (normative) Centrifugal pumpData sheet 29Annex B (normative) External forces and moments on branches 34Annex C (normative) Enquiry, proposal, purchase order 41Annex D (normative) Documentation after purchase order 41Annex E (informative) Peak displacement 42
8、Annex F (informative) Examples of seal arrangements 43Annex G (informative) Piping arrangements for seals 45Annex H (informative) Code for identification of fluid connections62Annex J (informative) Materials and material specifications forcentrifugal pump parts63Annex K (informative) Check-list 65An
9、nex L (informative) Bibliography 66Annex ZA (normative) Normative references to internationalpublications with their relevant European publications 67Figure 1 Driver output percentage of rated pump power requiredin the range of1 kW to100 kW 64Figure 2 Conditions of critical speed 64Figure 3 Maximum
10、spacing between shaft guide bushes (verticallineshaft pumps) 64Figure E.1 Single amptitude A , as a function of speed of rotationfor various rms-velocity values 42Figure F.1 Soft packing (P) 43Figure F.2 Single mechanical seal (S) 43Figure F.3 Multiple mechanical seal (D) 44Figure F.4 Quench arrange
11、ment (Q) for soft packing, single andmultiple mechanical seal 44Table 1 Limits of vibration severity for horizontal pumps withmultivane impellers 11Table 2 Minimum running clearances 14Table 3 Maximum coupling end floats 22Table B.1 Characteristics of horizontal pump families 35Table B.2 Characteris
12、tics of vertical pump families 36Table B.3 Basic values of forces and moments for horizontaland vertical pumps38Table B.4 Coefficients for actual values of horizontal pumps 39Table B.5 Coefficients for actual values of vertical pumps 39Table H.1 Identification of corrections for measurement devices
13、63Table H.2 Identification of corrections for auxiliary devices 63 BSI 2011BS EN ISO 9905:1998+A1:2011EN ISO 9905:1998+A1:2011 (E)iiPageTable J.1 Material specification for centrifugal pump parts63Table J.2 Material code for mechanical seal components 64 BSI 2011BS EN ISO 9905:1998+A1:2011EN ISO 990
14、5:1998+A1:2011 (E)EUROPEAN STANDARDNORME EUROPENNEEUROPISCHE NORMEN ISO 9905:1998+A1:2011ICS 23.080.00Descriptors: SeeISO documentEnglish versionTechnical specifications for centrifugal pumpsClass I (ISO9905:1994)Spcifications techniques pour pompes centrifugesClasse I(ISO9905:1994)Kreiselpumpen tec
15、hnische Anforderungen Klasse I(ISO9905:1994)This European Standard was approved by CEN on18 September 1997.CEN members are bound to comply with the CEN/CENELEC InternalRegulations which stipulate the conditions for giving this European Standardthe status of a national standard without any alteration
16、. Up-to-date lists andbibliographical references concerning such national standards may be obtainedon 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 other language made by translation und
17、er theresponsibility of a CEN member into its own language and notified to theCentral Secretariat has the same status as the official versions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland,Ireland, Italy, Luxembo
18、urg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and United Kingdom.CENEuropean Committee for StandardizationComit Europen de NormalisationEuropisches Komitee fr NormungCentral Secretariat: rue de Stassart 36, B-1050 Brussels 1997 CEN All rights of exploitation in any form and by any me
19、ans reserved worldwide for CEN nationalMembers. Ref. No. EN ISO9905:1997 EI ncorporating Corrigendum February 2005 April 20112ForewordThe text of the International Standard from Technical Committee ISO/TC115, Pumps, of the International Organization for Standardization (ISO) has been taken over as a
20、 European Standard by Technical Committee CEN/TC197, 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 April1998, and conflicting national standards
21、shall be withdrawn at the latest by April1998.According to CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, I
22、taly, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and the United Kingdom.Endorsement noticeThe text of the International Standard ISO9905:1994has been approved by CEN as a European Standard without any modification.NOTE Normative references to International Standards are li
23、sted inAnnex ZA (normative).Foreword to amendment A1This document (EN ISO 9905:1997/A1:2011) has been 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 Amendment to the European Standard EN
24、ISO 9905:1997 shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by October 2011, and conflicting national standards shall be withdrawn at the latest by October 2011. Attention is drawn to the possibility that some of the ele
25、ments 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. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this E
26、uropean Standard: 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, Switzerland an
27、d the United Kingdom. Endorsement notice The text of ISO 9905:1994/AMD 1:2011 has been approved by CEN as a EN ISO 9905:1997/A1:2011 without any modification. BSI 2011BS EN ISO 9905:1998+A1:2011EN ISO 9905:1998+A1:2011 (E)31 Scope1.1 This International Standard covers the Class I (most severe) requi
28、rements for centrifugal pumps used in various industries. It consists of a basic text covering general requirements. The technical requirements refer only to the pump unit.Storage pumps are not included in this International Standard. A separate standard will be issued by IEC.1.2 This International
29、Standard includes design features concerned with installation, maintenance and safety of such pumps, including baseplate, coupling and auxiliary piping.1.3 Where this International Standard specification has been called for: a) and requires a specific design feature, alternative designs may be offer
30、ed which meet the intent of this International Standard, provided that the alternative is described in detail;b) pumps not complying with all requirements of this International Standard may be offered for consideration, provided that all deviations are stated.2 Normative referencesThe following stan
31、dards contain provisions which, through reference in this text, constitute provisions of this International Standard. At the time of publication, the editions indicated were valid. All standards are subject to revision, and parties to agreements based on this International Standard are encouraged to
32、 investigate the possibility of applying the most recent editions of the standards indicated below. Members of IEC and ISO maintain registers of currently valid International Standards.ISO 7-1:1982, Pipe threads where pressure-tight joints are made on the threads Part 1: Designation, dimensions and
33、tolerances. ISO 76:1987, Rolling bearings Static load ratings. ISO 185:1988, Grey cast iron Classification. ISO 228-1:1982, Pipe threads where pressure-tight joints are not made on the threads Part 1: Designation, dimensions and tolerances. ISO 281:1990, Rolling beatings Dynamic load ratings and rat
34、ing life. ISO 1940-1:1986, Mechanical vibration Balancequality requirements of rigid rotors Part 1: Determination of permissible residual unbalance. ISO 2858:1975, End-suction centrifugal pumps (rating 16 bar) Designation, nominal duty point and dimensions. ISO 3069:1974, End suction centrifugal pum
35、ps dimensions of cavities for mechanical seals and for soft packing. ISO 3274:1975, Instruments for the measurement of surface roughness by the profile method Contact (stylus) instruments of consecutive profile transformation Contact profile meters, system M. ISO 3506:1979, Corrosion-resistant stain
36、less steel fasteners Specifications. ISO 3744:1981, Acoustics Determination of sound power levels of noise sources Engineering methods for free-field conditions over a reflecting plane. ISO 3746:1979, AcousticsDetermination of sound power levels of noise sources Survey method. ISO 3755:1991, Cast ca
37、rbon steels for general engineering purposes. ISO 4863:1984, Resilient shaft couplingsInformation to be supplied by users and manufacturers. ISO 7005-1:1992, Metallic flangesPart 1: Steel flanges. ISO 7005-2:1988, Metallic flangesPart 2: Cast iron flanges. ISO 7005-3:1988, Metallic flangesPart 3: Co
38、pper alloy and composite flanges. ISO 544:1989, Filler materials for manual weldingSize requirements. The requirements of this International Standard do not apply to centrifugal pumps used in petroleum, petrochemical and natural gas applications. The requirements for centrifugal pumps used in these
39、applications are given in ISO 13709. !Text deleted“!Text deleted“ISO 9906:1), Rotodynamic pumps Hydraulicp e r f o r m a n c e a c c e p t a n c e t e s t s G r a d e s 1 , 2 a n d 31) To be published. (Revision of ISO 9906:1999)!“! “ BSI 2011BS EN ISO 9905:1998+A1:2011EN ISO 9905:1998+A1:2011 (E)43
40、.2 rated conditionsspecified guarantee-point operating conditions, including flowrate, head, power, efficiency, net positive suction head, suction pressure, temperature, density, viscosity and speed3.3 operating conditionsall operating parameters (for example temperature, pressure) determined by a g
41、iven application and pumped liquidthese parameters will influence the type of construction materials3.4 allowable operating rangeflow range, defined by the manufacturer/supplier, at the specified operating conditions using the impeller supplied, as limited by cavitation, heating, vibration, noise, s
42、haft deflection and other similar criteria; range whose upper and lower limits are denoted by maximum and minimum continuous flow, respectively3.5 maximum allowable casing working pressuregreatest outlet pressure at the specified operating temperature for which the pump casing is suitable3.6 basic d
43、esign pressurepressure derived from the permitted stress at20 C of the material used for the pressure-containing parts3.7 maximum outlet working pressuresum of the maximum inlet pressure plus maximum differential pressure at rated conditions using the supplied impeller3.8 rated outlet pressureoutlet
44、 pressure of the pump at the guarantee point with rated flow, rated speed, rated inlet pressure and density3.9 maximum inlet pressurehighest inlet pressure to which the pump is subjected during operation3.11 maximum allowable temperaturehighest allowable continuous temperature for which the equipmen
45、t (or any part to which the term refers) is suitable when handling the specified operating fluid at the specified operating pressure3.12 rated power inputpower required by the pump at the rated conditions3.13 maximum dynamic sealing pressurehighest pressure expected at the shaft seals during any spe
46、cified operating condition and during startup and shutdownNOTE1In determining this pressure, consideration should be given to the maximum inlet pressure, circulation or injection (flush) pressure and the effect of internal clearance changes.3.14 minimum permitted flow1) for stable flow: Lowest flowr
47、ate at which the pump can operate without exceeding the noise and vibration limits imposed by this International Standard.2) for thermal flow: Lowest flowrate at which the pump can operate and still maintain the temperature of the pumped liquid below that at which net positive suction head available
48、 equals net positive suction head required.3.15 corrosion allowancethat portion of the wall thickness of the parts wetted by the pumped liquid in excess of the theoretical thickness required to withstand the pressure limits given in 4.4.2.2 and4.4.2.43.16 maximum allowable continuous speedhighest sp
49、eed at which the manufacturer will permit continuous operation3.17 rated speednumber of revolutions of the pump per unit time required to meet the rated conditionsNOTE2Induction motors will operate at a speed that is a function of the load imposed.3.18 trip speedspeed at which the independent emergency overspeed device operates to shut down a prime mover3 DefinitionsFor the purposes of this International Standard, the following definitions apply.3.1 normal conditionsconditions at which usual operation is
