1、BRITISH STANDARD BS4082-1: 1969 Specification for External dimensions for vertical in-line centrifugal pumps Part1: “I” typeBS4082-1:1969 This British Standard, having been approved by the MechanicalEngineering IndustryStandards Committee, was published under the authorityof the Executive Boardon 30
2、 April1969 BSI08-1999 First published December1966 First revision April1969 The following BSI references relate to the work on this standard: Committee reference MEE/29 and MEE/29/2 Draft for comment68/30997 ISBN 580 05019 X Co-operating organizations The Mechanical Engineering Industry Standards Co
3、mmittee, under whose supervision this British Standard was prepared, consists of representatives from the following Government departments and scientific and industrial organizations: Associated Offices Technical Committee Institute of Marine Engineers Association of Consulting Engineers Institution
4、 of Civil Engineers Association of Mining Electrical and Institution of Gas Engineers Mechanical Engineers Institution of Heating and Ventilating Board of Trade Engineers* British Chemical Plant Manufacturers Institution of Mechanical Engineers* Association* Institution of Mechanical Engineers Briti
5、sh Compressed Air Society (Automobile Division) British Electrical and Allied Manufacturers Institution of Production Engineers Association* Locomotive and Allied Manufacturers British Gear Manufacturers Association Association of Great Britain British Internal Combustion Engine London Transport Boa
6、rd Manufacturers Association* Machine Tool Trades Association British Mechanical Engineering Ministry of Defence* Confederation* Ministry of Defence, Army Department* British Pump Manufacturers Association* Ministry of Power British Steel Industry Ministry of Public Building and Works Crown Agents f
7、or Oversea Governments and Ministry of Technology* Administrations* Ministry of Technology National Department of Employment and Productivity Engineering Laboratory* (H.M. Factory Inspectorate) Ministry of Transport Electricity Council, the Central Electricity National Coal Board* Generating Board a
8、nd the Area Boards in National Physical Laboratory (Ministry of England and Wales* Technology) Engineering Equipment Users Association* Radio Industry Council Gas Council* Royal Institute of British Architects The Government departments and scientific and industrial organizations marked with an aste
9、risk in the above list, together with the following, were directly represented on the committee entrusted with the preparation of this British Standard: Association of Hydraulic Equipment Institution of Mining Engineers Manufacturers Institution of Water Engineers British Hydromechanics Research Met
10、ropolitan Water Board Association Ministry of Defence, Navy Department British Railways Board Oil Companies Materials Association Institution of Electrical Engineers Amendments issued since publication Amd. No. Date CommentsBS4082-1:1969 BSI 08-1999 i Contents Page Co-operating organizations Inside
11、front cover Foreword ii 1 Scope 1 2 Definitions 1 3 Selection of pump 1 4 Pressure and temperature ratings 4 5 Designation of pump 4 6 Dimensions 4 7 Branches and branch flanges 6 8 Direction of rotation 7 Appendix A Derivation of the basic selection chart grid 8 Appendix B Change of speed 8 Figure
12、1 Basic selection chart for pumps 3 Figure 2 Dimensions for vertical in-line pumps “I” type 6 Figure 3 Selection chart for pumps operating at1450rev/min 9 Figure 4 Selection chart for pumps operating at1750rev/min 10 Figure 5 Selection chart for pumps operating at3500rev/min 11 Table 1 Quantity clas
13、sification 1 Table 2 Differential head classification 2 Table 3 Casing test pressure rating 4 Table 4 Standard dimensions for “I” type pumps 5 Table 5 Tolerances 5 Table 6 Branch flanges 7BS4082-1:1969 ii BSI 08-1999 Foreword This standard makes reference to the following British Standards: BS1560,
14、Steel pipe flanges and flanged fittings for the petroleum industry. BS4082, External dimensions for vertical in-line centrifugal pumps Part2:“U” type. BS . . . ., Flanges and bolting for pipes, valves and fittings 1) . This British Standard, prepared under the authority of the Mechanical Engineering
15、 Industry Standards Committee, is the first revision of BS4082-1 dealing with the standardization of the principal external dimensions of a range of vertical “in-line” centrifugal pumps, and applies to pumps with the “I” configuration of the inlet and outlet branches (seeClause2, Definitions). The s
16、tandard has been prepared to provide a range of standard principal external dimensions (metric) for specified duties, to ensure interchangeability of pump units. Pumps of the peripheral or gear type normally associated with small quantities are not precluded from complying with this standard, provid
17、ed they conform to the requirements in Clause2 and the dimensions in Table 4. The standard does not require pump manufacturers to produce pumps for all the operating zones defined on the basic selection chart (Figure 1). Pumps for duties outside the zones defined may be developed for inclusion in th
18、is British Standard at a later date. In this revision provision has been made for pump flanges to be in accordance with BS. . . ., “Flanges and bolting for pipes, valves and fittings” 1) , or alternatively to BS1560, “Steel pipe flanges and flanged fittings for the petroleum industry”. Both these st
19、andards are in metric units. It should be noted that BS. . . . 1)reflects current European practice and is based on the International Federation of the National Standardization Associations (ISA) Bulletin5A(1940), “Pipes and fittings”, which also forms the basis for European Standards on flanges inc
20、luding the German DIN Standards. Flanges to BS1560 (Class300) correspond closely to ASAB.16.5 (300) and BS1560 (Class150) correspond closely to ASAB.16.5 (150). It is therefore recommended that in view of the international usage of the type of pump covered by this British Standard, the flange dimens
21、ions adopted for castings should be the greatest envelope dimensions (diameter and thickness) provided by these standards. This standard does not provide, at present, dimensional requirements for the flange connection between the pump and the motor, shaft extensions nor shaft ends, but it is intende
22、d to include such requirements in a later edition. Requirements relating to the performance testing of pumps are given in BS599, “Methods of testing pumps”. A further standard in this series is BS4082-2, covering pumps with the “U” configuration of the inlet and outlet branches. It is proposed to su
23、bmit this British Standard to the International Organization for Standardization (ISO) as the basis for a future ISO Recommendation. NOTEThe coherent system of units adopted by ISO, known as the SI system, has been used in this British Standard. The pressure unit adopted is the “bar”, which is not i
24、tself an SI unit, but which is defined, as10 5 N/m 2 , where the newton (N) is the SI unit of force. The “bar” also approximates to one atmosphere. Information concerning SI units is given in BS350, “Conversion factors and tables”, and PD5686, “The use of SI units”. 1) In course of preparation.BS408
25、2-1:1969 BSI 08-1999 iii A British Standard does not purport to include all the necessary provisions of a contract. Users of British Standards are responsible for their correct application. Compliance with a British Standard does not of itself confer immunity from legal obligations. Summary of pages
26、 This document comprises a front cover, an inside front cover, pagesi toiv, pages1to11 and a back cover. This standard has been updated (see copyright date) and may have had amendments incorporated. This will be indicated in the amendment table on the inside front cover.iv blankBS4082-1:1969 BSI 08-
27、1999 1 1 Scope This British Standard specifies the principal external dimensions of a range of vertical “in-line” centrifugal single-stage pumps of the “I” type, normally driven by vertical close-coupled electric motors. Other forms of drive are not excluded, provided the pump complies with the requ
28、irements of2 1). 2 Definitions For the purposes of this British Standard the following definitions apply: 1) Vertical “in-line” centrifugal pump. A pump with the inlet and outlet branches arranged in the “I” configuration and having all the following features: a) A vertical shaft axis. b) A driving
29、unit supported exclusively by the pump. c) inlet and outlet branch connections, identical in size and rating, lying on a common centre line which intersects the vertical axis. 2) “Close coupled”. A form of construction where the impeller is mounted on the shaft of the driving unit. 3 Selection of pu
30、mp The pump size for a given duty point of quantity and differential head shall be determined from the basic selection chart, Figure 1. This is based on a rotational speed of2900rev/min except for pumps designated60D and60E which are based on a rotational speed of1450rev/min. This chart defines the
31、zone of operation in terms of quantity and differential head for each pump size, based on the assumption that the liquid handled is clean water at17 C with a mass density of988kg/m 3 . A series of selection charts, Figure 3, Figure 4 and Figure 5, are included in Appendix B, and give guidance on pum
32、p selection at rotational speeds of1450rev/min1750rev/min and3500rev/min. These charts have been derived from the basic selection chart (Figure 1) and it should be noted that the quantity/differential head code classification is independent of the rotational speed. Each zone of operation, and the co
33、rresponding pump, is defined by reference to a quantity and differential head datum point designated by: 1) A number code classifying the quantity. 2) A letter code classifying the differential head. The numerical values assigned to the codes are given in Table 1 and Table 2. Table 1 Quantity classi
34、fication Code Cubic metres per hour 10 20 30 40 50 60 12 24 48 96 192 384BS4082-1:1969 2 BSI 08-1999 Table 2 Differential head classification The basic selection chart has been compiled on the assumption that the maximum efficiency points of the pump coincide with the quantity-differential head datu
35、m points. Code Metres B C D E F G H 10 16 25 40 64 100 160BS 4082-1:1969 BSI 08-1999 3 NOTEThis chart is based on a rotational speed of2900 rev/min except for pumps designated60D and60E which are based on a rotational speed of1450rev/min (seeAppendix B). Figure 1 Basic selection chart for pumpsBS408
36、2-1:1969 4 BSI 08-1999 The top line of each quantity-differential head zone defines the upper limit of operation but does not represent the performance characteristic curve of the pump. A pump unit will normally be supplied to perform one specified quantity-differential head duty within the zone, bu
37、t with adjustment or replacement of impeller and driving unit, will be capable of any duty within this zone. The derivation of the basic selection chart is given in Appendix A. 4 Pressure and temperature ratings 4.1 Pressure rating. Pumps complying with this British Standard shall be manufactured in
38、 two casing pressure ratings, a high pressure series designated by a code letter R, and a low pressure series designated by a code letter L. The hydrostatic test pressure corresponding to these two series shall be as specified in Table 3. Table 3 Casing test pressure rating The low casing pressure s
39、eries L shall not be available for pumps in the differential head code “H”. 4.2 Temperature rating. Pumps shall be capable of operating at a temperature rating up to and including175 C, with the substitution of suitable glands, joints and other accessories, as necessary. 5 Designation of pump Pumps
40、shall be designated by a code embodying the following information: 6 Dimensions The principal external dimensions of each standard pump shall be in accordance with the dimensions specified in Table 4. Code Pressure (max.) R L 60bar(6000kN/m 2 ) 25bar(2500kN/m 2 )BS4082-1:1969 BSI 08-1999 5 Table 4 S
41、tandard dimensions for “I” type pumps The “2P” dimension shall be taken to the joint faces and shall be identical for the high pressure (R) and low pressure (L) casing series. The tolerances on dimensions “2P”, “T” and “G” shall be as given in Table 5. Table 5 Tolerances (All dimensions are in milli
42、metres) Quantity code Differential head code Nominal branch size Dimensions Inlet and outlet P T G 10 B C&D E&F G 40 160 180 265 355 125 150 20 B C&D E&F G 50 180 212 265 355 125 200 30 C&D E&F G&H 80 250 300 400 160 250 40 D E&F G&H 100 250 300 400 224 250 50 E&F G&H 150 355 400 250 250 60 F G&H D&
43、E 200 375 450 530 300 280 2P T G +1.5mm 1.5mm +0mm 1.5mm +1.0mm 1.0mmBS4082-1:1969 6 BSI 08-1999 7 Branches and branch flanges 7.1 Branches. Inlet and outlet branch sizes shall be as stated in Table 4. Branches shall be capable of wholly supporting the pump unit from the adjacent pipework. A foot ma
44、y also be incorporated to support the pump unit (seeFigure 2), as agreed between the purchaser and the manufacturer. 7.2 Branch flanges. The pump inlet and outlet branch flanges shall be drilled as specified by the purchaser in accordance with the requirements of Table 6. Figure 2 Dimensions for ver
45、tical in-line pumps “I” type Symbols for standardized dimensions Letter symbol Dimensionsdescription G Distance between centre line of fixing holes about axes of pump foot. P Distance from face of pump inlet or outlet to vertical centre line. T Distance from centre line of pump inlet and outlet to b
46、ottom face of pump foot when provided.BS4082-1:1969 BSI 08-1999 7 Table 6 Branch flanges Flanges shall be flat faced and of a thickness not less than that to the raised face portion of the corresponding raised face flange specified in the British Standards listed in Table 6. The flanges shall be ful
47、ly machined across the face and drilled off-centre. The rear of the flanges in the vicinity of the bolt holes shall be parallel with the joint face. This can be achieved by fully machining the rear face of the flange, by spot facing or other equally suitable methods. The joint face of the inlet and
48、outlet branch flanges shall be parallel such that the difference between lengths(2P), measured at the points of any corresponding diameter on the flange faces, shall not exceed0.5mm. 8 Direction of rotation The direction of rotation shall be clockwise or anticlockwise when viewed from the driving un
49、it, as preferred by the individual manufacturer. The direction of rotation shall be clearly indicated by means of an arrow on the pump casing in the direction of the flow. Casing pressure series Branch flanges R a BS. . . . (Metric) Nominal pressure40bar (4000kN/m 2 ) b BS1560 (Metric) (Class300) L a BS. . . . (Metric) Nominal pressure16bar (1600kN/m 2 ) b BS1560 (Metric) (Class150) a BS. . . ., “Flanges and bolting for pipes, valves and fittings” in course of preparation. b BS1560, “Steel pipe flanges and flang
