BS PD CEN TR 13930-2009 Rotodynamic pumps. Design of pump intakes. Recommendations for installation of pumps
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ID： |
4BCB0358EE9F4BC987CE332D152C7D78 |
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文件大小(MB)： |
0.45 |
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页数： |
32 |
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日期： |
2011-3-9 |
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文本摘录（文本识别可能有误，但文件阅览显示及打印正常，pdf文件可进行文字搜索定位）：
PD CEN/TR,13930:2009,ICS 23.080,NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW,PUBLISHED DOCUMENT,Rotodynamic pumps —,Design of pump intakes,— Recommendations,for installation of,pumps,This Published Document,was published under the,authority of the Standards,Policy and Strategy,Committee on 28 February,2009,. BSI 2009,ISBN 978 0 580 62247 2,Amendments/corrigenda issued since publication,Date Comments,PD CEN/TR 13930:2009,National foreword,This Published Document is the UK implementation of CEN/TR,13930:2009.,The UK participation in its preparation was entrusted to Technical,Committee 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 British Standard cannot confer immunity,from legal obligations.,PD CEN/TR 13930:2009,TECHNICAL REPORT,RAPPORT TECHNIQUE,TECHNISCHER BERICHT,CEN/TR 13930,January 2009,ICS 23.080 Supersedes CR 13930:2000,English Version,Rotodynamic pumps - Design of pump intakes -,Recommendations for installation of pumps,Pompes rotodynamiques - Conception des ouvrages,d'aspiration - Recommandations d'installation des pompes,Kreiselpumpen - Gestaltung der Einlaufbauten -,Empfehlungen zur Installation der Pumpen,This Technical Report was approved by CEN on 13 October 2008. It has been drawn up by the Technical Committee CEN/TC 197.,CEN members are the national standards bodies of Austria, Belgium, Bulgaria, 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 and United Kingdom.,EUROPEAN COMMITTEE FOR STANDARDIZATION,COMITé EUROPéEN DE NORMALISATION,EUROP腎SCHES KOMITEE FüR NORMUNG,Management Centre: Avenue Marnix 17, B-1000 Brussels,. 2009 CEN All rights of exploitation in any form and by any means reserved,worldwide for CEN national Members.,Ref. No. CEN/TR 13930:2009: E,PD CEN/TR 13930:2009,CEN/TR 13930:2009 (E),2,Contents Page,Foreword 3..,Introduction . 4..,1.. Scope . 5..,2.. General .. 5..,2.1.. Factors which influence the operation of the plant .. 5..,2.2.. General design principles for a pumping plant 6..,3.. Plant with vertical suction inlet .. 7..,3.1.. General arrangements . 7..,3.2.. Diameter (D) at the entrance of the bellmouth or the tapered suction.. 9..,3.3.. Distance (C) between the bellmouth or the tapered suction inlet and floor 10..,3.4.. Distances between suction inlet axis and walls 11..,3.4.1.. Distance (L) between suction inlet axis and side walls 11..,3.4.2.. Distance (E) between suction inlet axis and rear wall .. 11..,3.5.. Submergence (S) . 11..,3.5.1.. Conditions to be satisfied for the determination of submergence 11..,3.5.2.. Determination of submergence (S) 12..,3.6.. Strainer .. 12..,3.7.. Feed intake - Pump environment 13..,3.7.1.. Feed intake .. 13..,3.7.2.. Immediate environment of the pump 20..,3.8.. Case of pumping plant with vertical suction inlet and flow rate less than 50 m3/h 23..,4.. Plant with intake with top suction inlet .. 23..,5.. Plant with intake with floor suction inlet 24..,5.1.. Bellmouth . 25..,5.2.. Submergence of horizontal plate 25..,5.3.. Special anti-vortex devices . 25..,6.. Plant with intake with wall suction inlet . 25..,6.1.. Shape and position of suction inlet .. 25..,6.2.. Submergence . 27..,6.3.. Special anti-vortex devices . 27..,Bibliography . 29..,PD CEN/TR 13930:2009,CEN/TR 13930:2009 (E),3,Foreword,This document (CEN/TR 13930:2009) has been prepared by Technical Committee CEN/TC 197 “Pumps”, the,secretariat of which is held by AFNOR.,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 CR 13930:2000.,PD CEN/TR 13930:2009,CEN/TR 13930:2009 (E),4,Introduction,In addition to the risks of cavitation that may exist at the intake of any pump depending on the NPSH available,pumping from a sump poses specific problems.,In fact, if the water passes from a flow state with an exposed surface to flow under pressure, significant swirling,movements may occur and sometimes be amplified, thus creating a sort of funnel or vortex which opens out into,the exposed surface of the sump with a risk of air being entrained or creating a swirling chimney, or whirl between,the bottom……
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