DIN EN ISO 29461-1-2014 Air intake filter systems for rotary machinery - Test methods - Part 1 Static filter elements (ISO 29461-1 2013) German version EN ISO 29461-1 2013《旋转机械的进气过.pdf

1、March 2014Translation by DIN-Sprachendienst.English price group 26No part of this translation may be reproduced without prior permission ofDIN Deutsches Institut fr Normung e. V., Berlin. Beuth Verlag GmbH, 10772 Berlin, Germany,has the exclusive right of sale for German Standards (DIN-Normen).ICS 2

2、9.160.99!%,X“2099153www.din.deDDIN EN ISO 29461-1Air intake filter systems for rotary machinery Test methods Part 1: Static filter elements (ISO 29461-1:2013);English version EN ISO 29461-1:2013,English translation of DIN EN ISO 29461-1:2014-03Luftfiltereinlasssysteme von Rotationsmaschinen Prfverfa

3、hren Teil 1: Statische Filterelemente (ISO 29461-1:2013);Englische Fassung EN ISO 29461-1:2013,Englische bersetzung von DIN EN ISO 29461-1:2014-03Systmes de filtration dair dadmission pour machines tournantes Mthodes dessai Partie 1: lments filtrants pour filtres statiques (ISO 29461-1:2013);Version

4、 anglaise EN ISO 29461-1:2013,Traduction anglaise de DIN EN ISO 29461-1:2014-03www.beuth.deIn case of doubt, the German-language original shall be considered authoritative.Document comprises 74 pages02.14 DIN EN ISO 29461-1:2014-03 2 A comma is used as the decimal marker. National foreword This docu

5、ment (EN ISO 29461-1:2013) has been prepared by Technical Committee ISO/TC 142 “Cleaning equipment for air and other gases” in collaboration with Technical Committee CEN/TC 195 “Air filters for general air cleaning” (Secretariat: UNI, Italy). The responsible German body involved in its preparation w

6、as the Normenausschuss Maschinenbau (Mechanical Engineering Standards Committee), Working Committee NA 060-09-21 AA Luftfilter (SpA CEN/TC 195 und ISO/TC 142) of Section Allgemeine Lufttechnik. Representatives of manufacturers and users of air filters, and of research and testing institutes contribu

7、ted to this standard. Once this standard is cited in the Official Journal of the European Union, it is deemed a “harmonized” standard and thus, a manufacturer applying this standard may assume compliance with the requirements of the Machinery Directive (“presumption of conformity”). The Internationa

8、l Standards referred to in this document and taken over as European Standards have been published as the corresponding DIN EN ISO Standards with the same number. Where the International Standards and publications referred to are not also DIN ISO Standards with the same number, there are no national

9、standards available. EN ISO 29461 consists of the following parts, under the general title Air intake filter systems for rotary machinery Test methods: Part 1: Static filter elements Cleanable (pulse jet) and surface loading filters, mechanical integrity of filter elements, in situ testing, marine a

10、nd offshore environment filter systems, and cleanable (pulse jet) filter elements will form the subjects of future parts. In addition to the legal units of measurement, this standard also uses the units “F”, “inch” and “inch WG”. It is important to note that according to the German law on units in m

11、etrology, the use of these units is not permitted in official or business communications within Germany. The indication of these units solely serves to facilitate the communication with those countries where these units are used (import-export business). EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE

12、NORM April 2013 ICS 29.160.99 English Version Air intake filter systems for rotary machinery - Test methods - Part 1: Static filter elements (ISO 29461-1:2013) Systmes de filtration dair dadmission pour machines tournantes - Mthodes dessai - Partie 1: lments filtrants pour filtres statiques (ISO 294

13、61-1:2013) Luftfiltereinlasssysteme von Rotationsmaschinen - Prfverfahren - Teil 1: Statische Filterelemente(ISO 29461-1:2013)This European Standard was approved by CEN on 1 March 2013. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for givin

14、g this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member. This European Standard exists in three offic

15、ial versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions. CEN members are the national standards bodies of

16、Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, S

17、weden, Switzerland, Turkey and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN nationa

18、l Members. Ref. No. EN ISO 29461-1:2013: EEN ISO 29461-1 Contents Page Foreword . 4 0 Introduction 5 1 Scope . 7 2 Normative references. 7 3 Terms and definitions 8 3.2 Velocity 8 3.3 Efficiency 8 3.5 Pressure drop (differential pressure) . 9 3.6 Filter area 9 3.7 Filters . 9 3.8 Test aerosol 10 3.9

19、 Test dust 11 3.10 Particle sampling 11 3.11 Particle shedding . 11 4 Symbols and abbreviated terms . 12 5 General requirements 14 6 Test rig and equipment 14 6.1 Test condition . 14 6.2 Test rig . 14 6.3 DEHS test aerosol generation . 18 6.4 Aerosol sampling system 19 6.5 Flow measurement . 20 6.6

20、Particle counter 20 6.7 Differential pressure measuring equipment 21 6.8 Dust feeder 21 6.9 Diluter equipment . 23 7 Qualification of test rig and apparatus 24 7.1 General 24 7.2 Air velocity uniformity in the test duct . 24 7.3 Aerosol uniformity in the test duct . 25 7.4 Particle counter sizing ac

21、curacy 26 7.5 Particle counter zero test 26 7.6 Particle counter overload test . 26 7.7 100 % efficiency test 27 7.8 Zero % efficiency test 27 7.9 Aerosol generator response time . 27 7.10 Dilution ratio . 28 7.11 Correlation ratio . 28 7.12 Pressure drop checking 29 7.13 Dust feeder airflow rate .

22、29 7.14 Reference filter check 30 7.15 Summary of qualification requirements 31 7.16 Apparatus maintenance 31 8 Test materials . 32 8.1 Test air . 32 8.2 Test aerosol 32 8.3 Loading dust . 33 8.4 Final filter 33 2DIN EN ISO 29461-1:2014-03EN ISO 29461-1:2013 (E) 9 Test procedure 33 9.1 Preparation o

23、f filter to be tested . 34 9.2 Initial pressure drop . 34 9.3 Initial particulate efficiency measurement 34 9.4 Conditioning test 38 9.5 Dust loading 38 10 Uncertainty calculation of the test results 39 10.1 Particulate efficiency for medium efficiency filters (initial particulate efficiency: 35 E 8

24、5 % at 0,4 m) . 39 10.2 Particulate efficiency for high efficiency filters (initial particulate efficiency 85 % at 0,4 m) . 40 10.3 Gravimetric efficiency 42 11 Reporting 42 11.1 General 42 11.2 Interpretation of test reports . 43 11.3 Summary . 44 11.4 Efficiency 46 11.5 Pressure drop and airflow r

25、ate . 46 11.6 Marking 46 Annex A (normative) Conditioning test procedure 53 Annex B (informative) Shedding from filter elements 57 Annex C (informative) Commentary . 59 Annex D (normative) Pressure drop calculation 63 Annex E (normative) Net Area Calculation 65 Bibliography 72 3DIN EN ISO 29461-1:20

26、14-03EN ISO 29461-1:2013 (E)Foreword This document (EN ISO 29461-1:2012) has been prepared by Technical Committee ISO/TC 142 Cleaning equipment for air and other gases in collaboration with Technical Committee CEN/TC 195 “Air filters for general air cleaning” the secretariat of which is held by UNI.

27、 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 October 2013, and conflicting national standards shall be withdrawn at the latest by October 2013. Attention is drawn to the possibility that some

28、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. According to the CEN-CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implem

29、ent this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania,

30、Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and the United Kingdom. Endorsement notice The text of ISO 29461-1:2013 has been approved by CEN as EN ISO 29461-1:2013 without any modification. “”4DIN EN ISO 29461-1:2014-03EN ISO 29461-1:2013 (E) 0 Introduction0.1 Filters in power generating/

31、compressor applicationsIn rotating machinery applications, the filtering system, typically a set of filter elements arranged in a suitable manner, are an important part of the whole turbine/compressor system. The development of turbine machinery used for energy production or others has led to more s

32、ophisticated equipment and therefore the importance of good protection of these systems has become more important in the recent years. It is known that particulate contamination can deteriorate a turbine power system quite substantially if not taken care of.This event is often described as “erosion”

33、, “fouling” and “hot corrosion” where salt and other corrosive particles are known as potential problems. Other particulate matters may also cause significant reduction of efficiency of the systems. It is important to understand that air filter devices in such systems are located in various environm

34、ental conditions. The range of climate and particulate contamination is very wide, ranging from deserts to humid rain forests to arctic environments. The requirements on these filter systems are obviously different depending on where they will be operating.ISO 29461 has based the performance of the

35、air intake filter systems not only upon heavy dust collection but also particulate efficiency in a size range that is considered to be the problematic area for these applications. Both ultra-fine and fine particles, as well as larger particles, should be considered when evaluating turbine fouling. I

36、n typical outdoor air, ultra-fine and fine particles in the size range from 0,01 m to 1 m contribute to 99 % of the number concentration and to 90 % of the surface contamination. The majority of the mass normally comes from larger particles (1,0 m).Turbo-machinery filters comprise a wide range of pr

37、oducts from filters for very coarse particles to filters for very fine, sub-micron particles. The range of products varies from self-cleaning to depth and surface loading systems. The filters and the systems have to withstand a wide temperature and humidity range, very low to very high dust concentr

38、ation and mechanical stress. The shape of products existing today can be of many different types and have different functions such as droplet separators, coalescing products, filter pads, metal filters, inertial filters, filter cells, bag filters, panel-type, self-cleanable and depth loading filter

39、cartridges and pleated media surface filter elements.ISO 29461 will provide a way to compare these products in a similar way and define what criteria are important for air filter intake systems for rotary machinery performance protection. The performance of products in this broad range must be compa

40、red in a good manner. Comparing different filters and filter types must be done with respect to the operating conditions they finally will be used in.For instance, if a filter or a filter system is meant to operate in an extreme, very dusty environment, the real particulate efficiency of such a filt

41、er cannot be predicted because the dust loading of the filter plays an important role. ISO 29461-2 will address the performance of cleanable and surface loading filters.0.2 Filtration characteristicsInitiatives to address the potential problems of particle re-entrainment, shedding and the in-service

42、 charge neutralization characteristics of certain types of media have been included in Annexes A and B.Certain types of filter media rely on electrostatic effects to achieve high efficiencies at low resistance to airflow. Exposure to some types of challenge, such as combustion particles or other fin

43、e particles, may inhibit such charges with the result that filter performance suffers. The normative test procedure, described in Annex A, provides techniques for identifying this type of behaviour. This procedure is used to determine whether the filter particulate efficiency is dependent on the ele

44、ctrostatic removal mechanism and to provide quantitative information about the importance of the electrostatic removal. The procedure was selected because it is well established, reproducible, relatively fast and easy to perform.In an ideal filtration process, each particle would be permanently arre

45、sted at the first contact with a filter fibre, but incoming particles may impact on a captured particle and dislodge it into the air stream. Fibres or particles from the filter itself could also be released, due to mechanical forces. From the users point of view it might be important to know this, s

46、ee Annex B.5DIN EN ISO 29461-1:2014-03EN ISO 29461-1:2013 (E)Filters with a low initial or conditioned particulate efficiency (1 000 mm and/or 1,1 LFigure 4 Duct section including the filter to be tested (4) and filter length ( L)Key1 filter sectionFigure 5 Example of filter section with transition

47、for special filter constructionFigure 6 Examples of mounting of circular cartridge in test duct17DIN EN ISO 29461-1:2014-03EN ISO 29461-1:2013 (E)Dimensions in millimetresKey1 mixing orifice2 perforated plate with diameter 152 mm 2 mm and 40 % open area3 pressure tap4 transition duct - test filter s

48、maller than duct5 transition duct - test filter larger than ductFigure 7 Details of test duct components6.3 DEHS test aerosol generationThe test aerosol shall consist of undiluted DEHS, or other aerosols in accordance with 8.2. Test aerosol of DEHS (DiEthylHexylSebacate) produced by a Laskin nozzle aerosol generator is widely used in performance testing of high efficiency filters. The aerosol shall be virtually un-charged, which means that no additional treatment of the aerosol (such as neutralization with