1、PD CEN/TR 13931:2009 ICS 23.080 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW PUBLISHED DOCUMENT Rotodynamic pumps Forces and moments on flanges Centrifugal, mixed flow and axial flow horizontal and vertical shafts pumps Incorporating corrigendum June 2010National foreword T
2、his Published Document is the UK implementation of CEN/TR 13931:2009, incorporating corrigendum June 2010. 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 i
3、ts 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 13931:2009 This Published Document was published under
4、 the authority of the Standards Policy and Strategy Committee on 28 February 2009 BSI 2010 Amendments/corrigenda issued since publication Date Comments 31 August 2010 Implementation of CEN/TR corrigendum June 2010; Figure in Table 6 replaced ISBN 978 0 580 71462 7TECHNICAL REPORT RAPPORT TECHNIQUE T
5、ECHNISCHER BERICHT CEN/TR 13931 January 2009 ICS 23.080 English Version Rotodynamic pumps - Forces and moments on flanges - Centrifugal, mixed flow and axial flow horizontal and vertical shafts pumps Pompes rotodynamiques - Forces et moments applicables aux brides - Pompes centrifuges, hlico-centrif
6、uges et hlices axes horizontal et vertical Rotodynamische Pumpen - Zulssige Flanschenkrfte und Momente - Kreiselpumpen, Halbaxialaufpumpen und Axialpumpen mit horizontaler und verticaler Achse This Technical Report was approved by CEN on 13 October 2008. It has been drawn up by the Technical Committ
7、ee 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, Sl
8、ovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR 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
9、 national Members. Ref. No. CEN/TR 13931:2009: E Incorporating corrigendum June 2010 Supersedes CR 1393 :2000 1PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 2 Contents Page 1 Scope 4 2 Normative references 4 3 Responsibilities of manufacturer and purchaser . 4 3.1 General 4 3.2 Design considerations 4
10、4 Criteria adopted in setting limiting forces and moments 5 4.1 Shaft-end movement . 5 4.2 Distortion of the pump casing 5 4.3 Validity of force and moment values Effects of materials and temperature 5 5 Horizontal shaft pumps . 6 5.1 Definition of pump families and summary of features . 6 5.2 Calcu
11、lation of maximum permissible forces and moments 11 5.3 Maximum permissible forces and moments on standardised or modular pump families . 14 5.3.1 General 14 5.3.2 Composition of forces and moments 14 5.3.3 Possibility of adapting the tables to other pumps of similar design . 14 5.4 Other horizontal
12、 pump families 14 5.5 Practical considerations for horizontal shaft pumps . 14 6 Vertical shaft pumps . 15 6.1 Definition of pump families and summary of features . 15 6.1.1 Installation types 15 6.1.2 Position(s) of flange(s) 16 6.2 Calculation of maximum permissible forces and moments 19 6.3 Maxim
13、um permissible forces and moments on pump flanges . 21 6.3.1 General 21 6.3.2 Suspended shaft pumps generally used for transporting water (“for water“) 21 6.3.3 “In line“ pumps 22 6.4 Practical considerations for vertical shaft pumps . 22 Annex A (informative) Horizontal shaft pumps - Calculation of
14、 forces and moments for reinforced and/or concrete mountings for families 2, 3.B, 3.C, 5.A, 5.B, 6, 7 and 8 23 Annex B (informative) Specifications relating to additional possibilities . 24 B.1 General 24 B.2 Horizontal pumps only 24 B.2.1 Pump stopped 24 B.2.2 Reinforced and/or concrete mounting 24
15、 B.3 Horizontal and vertical pumps . 27 B.3.1 Prestressing on the pipework 27 B.3.2 Weighting or compensation formula . 27 B.3.3 Limit of accumulation of possibilities . 28 Bibliography 29 PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 3 Foreword This document (CEN/TR 13931:2009) has been prepared by Te
16、chnical 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
17、document supersedes CR 13931:2000. The pumps families are numbered sequentially, leaving room for the inclusion of additional types if required at a later date: horizontal shaft pumps: N 1 to 8 1 ; vertical shaft pumps: N 20 to 36 1 . The pump families are described and illustrated in Tables 2 and 5
18、. Annexes A and B are for information only. 1 Numbers 9 to 19 are reserved for potential new families of pumps. PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 4 1 Scope This CEN Technical Report provides information for the calculation of maximum permissible forces and moments allowed on the flanges of
19、various types of horizontal and vertical shaft rotodynamic pumps, caused by the reaction to pipework that is rigidly connected to the installation. This document does not take into account the effect of any elastic or deformable linkages, such as bellows, elastic joints, self butting sliding joints,
20、 etc. This CEN Technical Report is not applicable to multistage monobloc pumps, whose outlets are remote from the installation plane, or to horizontal shaft pumps mounted vertically for installation reasons, such as, fixing to a vertical wall. 2 Normative references The following referenced document
21、s are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 22858, End-suction centrifugal pumps (rating 16 bar) - Designation, nominal dut
22、y point and dimensions (ISO 2858:1975) EN ISO 5199:2002, Technical specifications for centrifugal pumps - Class II (ISO 5199:2002) API 610, Centrifugal pumps for general refinery service 3 Responsibilities of manufacturer and purchaser 3.1 General The manufacturer should inform the purchaser of the
23、family to which the equipment offered belongs. The purchaser should calculate the loads applied to the pump at its flanges, considered for all possible relevant conditions (at ambient temperature, at operating temperature, at rest, under pressure). The purchaser should ensure that the values of thes
24、e loads do not exceed the corresponding calculated limits for the pump selected. If they do, the pipework should be modified to reduce the loads, or a different type of pump, capable of withstanding higher loads, shall be selected. Both parties should agree on the type of baseplate to be provided (c
25、onventional, reinforced, concrete, etc.). The basic values given in Tables 2 and 5 and Annex B correspond to the most common sizes of pumps; for larger sizes of pumps, the manufacturer shall indicate the limiting values. 3.2 Design considerations Excessive loads transmitted to a pump by the piping c
26、an compromise smooth running and reduce the life of the pump, the coupling and perhaps the motor bearings, increase the demand for maintenance and, in the extreme, will cause failure. These adverse effects result from two distinct causes: displacement of the pump shaft end relative to that of the dr
27、iver. The misalignment will overload the pump and driver bearings and, when a flexible coupling is used, increase its rate of wear. PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 5 distortion of the pump casing, changing the internal clearances between the fixed and rotating parts, thus increasing wear
28、and vibrations, sometimes leading to seizure. If mechanical seals are installed, parallelism of the faces will be upset, causing leakage and rapid breakdown. It is for these reasons that limits must be set to the external forces and moments acting on the flanges. Manufacturers are responsible for ve
29、rifying that the pump offered will operate satisfactorily when these limits are not exceeded. 4 Criteria adopted in setting limiting forces and moments 4.1 Shaft-end movement The lateral displacement of the shaft-end, relative to a fixed point in space, is given in Table 1 for the various pump famil
30、ies, as a function of shaft size. Table 1 Criteria for forces and moments limitations Type of pump Families Shaft-end diameter (mm) Displacement (mm) Standard (N) Modular 1A, 1B 3A 4A, 4B 40 (N42) 0,15 0,20 0,25 Other horizontal Pumps 2, 3B, 3C 5A, 5B 6, 7, 8A, 8B, 8C 50 50 50 0,125 0,175 0,175 Vert
31、ical pumps All (20A-36B) All 0,150 4.2 Distortion of the pump casing It is the responsibility of the pump manufacturer to verify that the loads applied on the flanges, in any of the permitted combinations, do not cause greater changes in internal clearance or disturbances to the mechanical seals tha
32、n are allowed by his own design rules or those of the specifications imposed by the user, whichever are the more stringent. 4.3 Validity of force and moment values Effects of materials and temperature Unless indicated otherwise, the values for forces and moments are given for the basic material for
33、the pump family (see Tables 2 and 5) and for a maximum permissible temperature as shown. For other materials and higher temperatures, the values shall be corrected by applying the modulus of elasticity relation, namely: 20b tm E Ewhere E 20bmodulus of elasticity of the basic material at 20 C PD CEN/
34、TR 13931:2009 CEN/TR 13931:2009 (E) 6 E t.mmodulus of elasticity of the selected material at temperature t C For lamellar graphite cast iron, unalloyed steel and grade 18.8 stainless steel, refer to the graph in Figure 1. t (C) Key A Unalloyed steel B Type 18.8 stainless steel C Grey cast iron Figur
35、e 1 Variation of modulus of elasticity (E) as a function of temperature 5 Horizontal shaft pumps 5.1 Definition of pump families and summary of features Pump families are defined on the basis of the most commonly used geometric configurations and the most frequent operating conditions. They are numb
36、ered from 1 to 8, as listed and described in Table 2. Pumps with characteristics different from those in Table 2 should be subject to agreement between the parties concerned. PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 7 Table 2 Characteristics of horizontal pump families Family No. and Number of sta
37、ges 1)General Picture and description Technical limits Material Remarks Coefficients to apply to basic values Additional possibilities 2)Allowable Working Flange DN max Forces (N) Moment (N.m) Reinforced mounting Other pressure bar Temperature C 1.A 1 stage Single stage, overhung bearing frame; feet
38、 on casing; mounted at base level. 10 110 200 (Outlet)Cast iron Dimensions in accordance with EN 22858. x 0,50 X 0,50 yes no 1.B 1 stage 16 250 200 (Outlet)Cast steel x 1 x 1 yes no 2 1stage Axial inlet; outlet vertical on pump centreline. 10 110 500 Cast iron x 0,40 x 0,40 yes no 3.A 1 stage Single
39、 stage, overhung bearing frame; feet on casing; mounted at centreline level. Axial inlet; outlet vertical on pump centreline. 30 300 200 (Outlet)Cast steel Pump similar to EN 22858 but with casing mounted at centreline level. x 1,2 x 1,2 yes no 3.B 1 stage or 2 stages Single or two stage, overhung b
40、earing frame; feet on casing; mounted at centreline level. Axial or overhead inlet; outlet vertical. 55 430 350 Cast steel Equipment in accordance with API 610. x 0,85 (- 500) on every axis x 1 yes yes PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 8 Table 2 (continued) Family No. and Number of stages 1
41、)General Picture and description Technical limits Material Remarks Coefficients to apply to basic values Additional possibilities 2)Allowable Working Flange DN max Forces (N) Moment (N.m) Reinforce d mounting Other pressure bar Temperature C 3.C 1 stage Single stage, impeller between bearings; feet
42、on casing; mounted at centreline level. Inlet vertical; outlet vertical. 55 530 450 Cast steel Equipment in accordance with API 610. x 1 x 1 yes yes 4.A Single stage, overhung bearing frame; feet on bearing frame; mounted at base level. Axial inlet; outlet vertical on pump centreline or tangential.
43、Cast iron x 0,35 x 0,35 yes no 4.B 10 110 200 Cast steel x 0,60 x 0,60 yes no 5.A 1 stage or 2 stages Single or two stage; impeller between bearings; horizontal joint plane; feet on casing; mounted at base level. Inlet and outlet perpendicular to shaft axis. 20 110 600 Cast iron x 0,40 x 0,30 no no
44、PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 9 Table 2 (continued) Family No. and Number of stages 1)General Picture and description Technical limits Material Remarks Coefficients to apply to basic values Additional possibilities 2)Allowable Working Flange DN max Forces (N) Moment (N.m) Reinforced mou
45、nting Other pressure bar Temperature C 5.B 1 stage or 2 stages Single or two stage; impeller between bearings; horizontal joint plane; feet on casing; mounted at base level. Inlet and outlet perpendicular to shaft axis. 120 175 450 Cast steel Equipment in accordance with API 610. x 1 x 1 yes yes 6 M
46、ulti- stage Multi-stage; impellers between bearings; vertical joint plane; feet on casing mounted at base level. Inlet and outlet perpendicular to shaft axis. 15 110 150 Cast iron x 0,30 (- 500) on resulting x 0,35 no no PD CEN/TR 13931:2009 CEN/TR 13931:2009 (E) 10 Table 2 (end) Family No. and Numb
47、er of stages 1)General Picture and description Technical limits Material Remarks Coefficients to apply to basic values Additional possibilities 2)Allowable Working Flange DN max Forces (N) Moment (N.m) Reinforced mounting Other pressure bar Temperature C 7 Multistage Multi-stage; impellers between b
48、earings; vertical joint plane; feet on casing; mounted at centreline level. Inlet and outlet perpendicular to shaft axis. 40 175 150 Cast steel x 0,72 (- 500) on resulting x 0,84 no no 8.A 3 to 5 stages Muti-stage; impellers between bearings; horizontal joint plane; feet on casing mounted at centrel
49、ine or base level. Inlet and outlet perpendicular to shaft axis. 150 175 350 Cast steel Equipment in accordance with API 610. x 1 x 1 yes yes 8.B 6 to 10 stages x 1 x 0,75 yes yes 8.C 11 to 15 stages x 1 x 0,50 yes yes 1) In family 7, with brackets on ground, divide index by 1,2 or: - Forces: x 0,6; - Moments: (- 500 N.m
