DIN 28141-2003 Connecting flanges for vessels and process apparatus of non-alloy and stainless steel《非合金钢和不锈钢制容器和加工器具用连接法兰》.pdf

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1、ICS 71.120.10Montageflansche fr Behlter und Apparate aus unlegiertem undnichtrostendem StahlIn keeping with current practice in standards published by the International Organization for Standardiza-tion (ISO), a comma has been used throughout as the decimal marker.Ref. No. DIN 28141 : 2003-11English

2、 price group 09 Sales No. 010902.05DEUTSCHE NORM November 200328141Continued on pages 2 to 9. No part of this translation may be reproduced without the prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for Ger

3、man Standards (DIN-Normen).Translation by DIN-Sprachendienst.In case of doubt, the German-language original should be consulted as the authoritative text.Connecting flanges for unalloyed and stainlesssteel mixing vessels for use in processengineeringSupersedesJanuary 1992 edition.ForewordThis standa

4、rd has been prepared by the Normenausschuss Chemischer Apparatebau (Process Engineer-ing Standards Committee).AmendmentsThis standard differs from the January 1992 edition in that it has been editorially revised.Previous editionsDIN 28141: 1975-10, 1983-10, 1992-01.All dimensions are in millimetres.

5、1 ScopeThis standard specifies dimensions and materials for connecting flanges for unalloyed and stainless steelvessels and other equipment for use in process engineering applications (e.g. mixing vessels as inDIN 28136-1). See Explanatory notes for more information on the use of such flanges.2 Norm

6、ative referencesThis standard incorporates, by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text and the titles of the publications arelisted below. For dated references, subsequent amendments to or revisions of

7、any of these publicationsapply to this standard only when incorporated in it by amendment or revision. For undated references,the latest edition of the publication referred to applies.DIN 28030-2 Flanged joints for chemical apparatus Tolerances on flanges dimensionsDIN 28136-1 Mixing vessels for use

8、 in process engineering Principal dimensionsDIN 28137-1 Flanges for unalloyed and stainless steel mixing vessels for use in process engineering Dimensions and designDIN 28138-1 Mechanical seals for unalloyed and stainless steel mixer shafts Ratings and dimensionsDIN 28154 Unalloyed and stainless ste

9、el mixer shaft ends for use with mechanical seals, in processengineering applications DimensionsDIN 28156 Unalloyed and stainless steel mixer shaft ends for use with stuffing boxes DimensionsPage 2DIN 28141 : 2003-11DIN 28161 Shafts for mixers in process engineering applications Rotational speed and

10、 direction,running accuracy, arrangement of bearings and housing space for shaft sealsDIN 28162-1 Housings for mixer drive trains with mechanical seals, in process engineering applica-tionsDIN 28162-2 Housings for mixer drive trains with gland stuffing box, in process engineering appli-cationsDIN 28

11、163 Gland stuffing boxes for unalloyed and stainless steel mixer shafts, in process engi-neering applicationsDIN EN 1092-1 Flanges and their joints Circular flanges for pipes, valves, fittings and accessories Part 1: Steel flanges, PN designatedDIN EN 10028-2 Flat products made of steels for pressur

12、e purposes Part 2: Unalloyed and alloy steelswith elevated temperature propertiesDIN EN 10028-7 Flat products made of steels for pressure purposes Part 7: Stainless steelsDIN EN 10204 Metallic products Types of inspection documentsISO 2768-1 : 1989 General tolerances Part 1: Tolerances for linear an

13、d angular dimensions withoutindividual tolerance indicationsAD 2000-Merkbltter, Reihe W (AD 2000 Codes of practice, W series*)Directive 97/23/EC of the European Parliament and of the Council of 29 May 1997 on the approximation ofthe laws of the Member States concerning pressure equipment, EC Officia

14、l Journal, 1997, No. L 265, p. 1103 Dimensions and designation3.1 DimensionsFigures 1 and 2 show the use of connecting flanges in cases where the nominal diameter at the base of thedrive train housing is lower than or equal to that of the mixer mounting flange. The common (and geometricallyfeasible)

15、 combinations of mixer mounting flange, drive train housing and mixer capacity are given in table 1,whereas tables 2 and 3 specify the dimensions of flanges as a function of housing bottom size and mixershaft diameter, respectively. Figure 3 shows a flange (type G as in DIN EN 1092-1) enlarged at th

16、e bore.This standard specifies six types of connecting flange:a) flanges which fit types AG and BG mixer mounting flanges as in DIN 28137-1: type A: for type A shaft ends as in DIN 28154 and as in DIN 28156 (see figure 4); type B: for type B shaft ends as in DIN 28154 (see figure 5); type C: for typ

17、e C shaft ends as in DIN 28154 (see figure 6);b) flanges which fit types AN and BN mixer mounting flanges as in DIN 28137-1: type D: for type A shaft ends as in DIN 28154 and shaft ends as in DIN 28156 (see figure 7); type E: for type B shaft ends as in DIN 28154 (see figure 8); type F: for type C s

18、haft ends as in DIN 28154 (see figure 9).The dimensions of connecting flanges designed to fit types CGO, CGU and CN mixer mounting flanges asin DIN 28137-1 shall be subject to agreement.Tolerances shall be in compliance with DIN 28030-2, DIN 28161 or DIN EN 1092-1. Where no tolerances arespecified i

19、n these standards, general tolerances as in ISO 2768-1, class m, shall apply.Normally, the surface finish of flanges and flange facings shall be as specified in DIN EN 1092-1. Otherfinishes (depending on the type of seal to be used) may be agreed between manufacturer and user.*) Obtainable from Beut

20、h Verlag GmbH, Burggrafenstr. 6, 10787 Berlin, Germany.Page 3DIN 28141 : 2003-11The designs shown are for illustrative purposes only; however, the dimensions of flanges shall be asspecified.Key1 Bottom of housing for mixer drive train2 Connecting flange, type B3 Mounting flangeFigure 1: Bottom of ho

21、using for mixer drive train which is equal to mounting flange sizeKey1 Bottom of housing for mixer drive train2 Connecting flange, type C3 Mounting flangeFigure 2: Bottom of housing for mixer drive train which is smaller than mounting flange sizePage 4DIN 28141 : 2003-11Figure 3: Connecting flange e

22、nlarged at the boreTable 1: Sizes of drive train housing bottoms1) Only A, C, D and F types flanges of thickness s can be made to fit. For types B and E, the thicknessshall be enlarged at the flange bore (cf. figure 3).2) For combinations that are assigned a code number, housings as in DIN 28162-1 a

23、nd DIN 28162-2 aresuitable.Combinations without a code number (marked + or ) have been classified according to the size ofthe housing bottom.3) As in DIN 28136-1.ring2Page 5DIN 28141 : 2003-11Type AThreaded holes are to be located symmetrically to their common axes. Clearance holes shall not be posi

24、-tioned on these axes.For the purpose of transportation and assembly, connecting flanges shall be provided with two additionalM16 holes, located opposite to each other on the circumference of a circle of diameter k1and on one of thetwo axes.Figure 4: Type A connecting flangeUnalloyed and stainless s

25、teel flange Unalloyed steel flange with stainless steel facing(for unspecified dimensions and indications, referto illustration on the left).Detail DetailPage 6DIN 28141 : 2003-11Table 2: Flange sizesTable 3: Flange dimensions as a function of shaft diameterType BFor unspecified dimensions and indic

26、ations, refer to type A.Figure 5: Type B connecting flangeType CFor unspecified dimensions and indications, refer to type A.Figure 6: Type C connecting flangeType DFor unspecified dimensions and indications, refer to type A.Figure 7: Type D connecting flangePage 7DIN 28141 : 2003-11Type EFor unspeci

27、fied dimensions and indications, refer to type B.Figure 8: Type E connecting flangeType FFor unspecified dimensions and indications, refer to type C.Figure 9: Type F connecting flange3.2 DesignationDesignation of a type A connecting flange made of grade P 265GH steel (material number 1.0425) as inDI

28、N EN 10028-2, designed to fit a mounting flange of size 400, a size 300 drive train housing bottom and witha shaft of diameter, d3, equal to 80 mm, faced with grade X6CrNiMoTi 17-12-2 steel (material number 1.4571)as in DIN EN 10028-7:Flange DIN 28141 A 400 300 80 1.0425/1.45714 MaterialsThe materia

29、l of flanges and that of any facing is to be selected as a function of the vessel material and itsdesign strength. It is to be specified when ordering.Proof of the suitability of materials shall be provided in the form of an inspection document as in DIN EN 10204and as set out in the relevant AD 200

30、0 codes of practice, series W.5 AnalysisSince connecting flanges are considered components of pressure vessels in accordance with EC Directive97/23/EC, they shall be analysed for adequate strength, taking into account the stresses to which the vesselwill be subjected in service, including any additi

31、onal loading resulting from the mixing mechanism.Page 8DIN 28141 : 2003-11Annex AGuidance on the use of connecting flangesThe flanges dealt with here are used to connect mixer mounting flanges as in DIN 28137-1 to drive trainhousings as in the DIN 28162 series. They are designed to accommodate mecha

32、nical seals or gland stuffingboxes as in DIN 28138-1 and DIN 28163, respectively, and to be fitted with mixer shafts as specified inDIN 28154 or DIN 28156.Connecting flanges allow the combination of mixer flanges with mechanical seals or gland stuffing boxes anddrive train housings of various sizes.

33、Key1 Drive train housing for use with mechanical seal (as in DIN 28162-1)2 Coupling3 Mechanical seal as in DIN 28138-14 Connecting flange as in DIN 281415 Mounting flange as in DIN 28137-16 Mixer vessel as in DIN 28136-17 Shaft end to accommodate mechanical seal (as in DIN 28154)8 Drive train housing for use with gland stuffing box (as in DIN 28162-2)9 Bearing10 Gland stuffing box (as in DIN 28163)11 Shaft end to accommodate gland stuffing box (as in DIN 28156)Figure A.1: Typical mixer drive trainPage 9DIN 28141 : 2003-11