1、BS EN 15611:2008ICS 45.060.01NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBRITISH STANDARDRailway applications Braking Relayvalves+A1:2010National forewordThis British Standard is the UK implementation of EN 15611:2008+A1:2010. It supersedes BS EN 15611:2008, which is withdr
2、awn.The start and finish of text introduced or altered by amendment is indicated in the text by tags. Tags indicating changes to CEN text carry the number of the CEN amendment. For example, text altered by CEN amendment A1 is indicated by !“.The UK participation in its preparation was entrusted to T
3、echnical Committee RAE/4, Braking.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 Sta
4、ndard cannot confer immunity from legal obligations.BS EN 15611:2008+A1:2010This British Standard was published under the authority of the Standards Policy and Strategy Com-mittee on 31 December 2008 BSI 2011Amendments/corrigenda issued since publicationDate Comments 31 January 2011 Implementation o
5、f CEN amendment A1:2010ISBN 978 0 580 70061 3EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN 15611:2008+A1 October 2010 ICS 45.060.01 Supersedes EN 15611:2008English Version Railway applications - Braking - Relay valves Applications ferroviaires - Freinage - Relais pneumatiques Bahnanwendungen
6、- Bremse - Relaisventile This European Standard was approved by CEN on 27 September 2008 and includes Amendment 1 approved by CEN on 30 August 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status o
7、f 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 Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A ver
8、sion in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Re
9、public, 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 COMIT EUROPEN
10、DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Brussels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 15611:2008+A1:2010: E2 Contents Page Foreword 41 Scope 52 Normative reference
11、s 53 Terms and definitions, symbols and abbreviations .53.1 Terms and definitions .53.2 Symbols 93.3 Abbreviations 104 Design and manufacture 104.1 General . 104.2 Functional requirements 124.2.1 Minimum output pressure 124.2.2 Accuracy of the output pressure and changeover 134.2.3 Load signal chara
12、cteristics . 134.2.4 Enabling of a change of relay valve ratio during brake application of a relay valve of type B1 . 144.2.5 Prevention of a change of relay valve ratio during brake application of a relay valve of type B2 and a variable load relay valve, types C, C1, D, E . 144.2.6 Kinked character
13、istic of a variable load relay valve (type E) . 144.2.7 Interaction of a relay valve and a distributor valve . 154.2.8 Hysteresis 164.2.9 Sensitivity 164.2.10 Flow 164.2.11 Leakage 164.2.12 Change of relay valve ratio 164.3 Shock and vibration . 174.4 Environment requirements 174.4.1 General . 174.4
14、.2 Temperature 174.4.3 Other environmental conditions . 184.5 Compressed air quality 194.6 Service life . 204.7 Fire behaviour . 204.8 External appearance . 204.9 Design requirements regarding pressure stress 204.10 Interface . 204.10.1 General . 204.10.2 Mechanical . 204.10.3 Pneumatic 205 Material
15、s 216 Type tests 216.1 General . 216.2 Individual relay valve tests 216.2.1 Test bench for individual relay valves 216.2.2 Sampling for type tests 246.2.3 Test temperature and air quality . 246.2.4 Procedure for type tests 247 Routine test and inspection . 478 Type-validation 47BS EN 15611:2008+A1:2
16、010EN 15611:2008+A1:2010 (E)3 9 Documentation 4710 Designation 4811 Identification and marking 48Annex A (informative) In-service trial . 49A.1 General . 49A.2 Test set-up and sampling . 49A.3 Procedure . 49A.4 Pass/fail criteria . 49Annex B (informative) Static vehicle and running tests . 50B.1 Gen
17、eral . 50B.2 Test recommendations . 50B.2.1 Variable load relay valve . 50B.2.2 Empty/load relay valve 51Annex ZA (informative) !Relationship between this European Standard and the Essential Requirements of EU Directive 2008/57/EC of the European Parliament and of the Council of 17 June 2008 on the
18、interoperability of the rail system within the Community (Recast)“ . 52!deleted text“ Bibliography 58BS EN 15611:2008+A1:2010EN 15611:2008+A1:2010 (E)4 Foreword This document (EN 15611:2008+A1:2010) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which
19、is held by DIN. 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 April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn to the possibility
20、 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 includes Amendment 1, approved by CEN on 2010-08-30. This document supersedes EN 15611:2008. The start and fi
21、nish of text introduced or altered by amendment is indicated in the text by tags ! “. !This document has been prepared under a mandate given to CEN/CENELEC/ETSI by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive 2008/57/EC. For rel
22、ationship with EU Directive 2008/57/EC, see informative Annex ZA, which is an integral part of this document.“ According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria,
23、 Croatia, 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. BS EN 15611:2008+A1:2010EN
24、15611:2008+A1:2010 (E)5 1 Scope This European Standard is applicable to relay valves designed to control the brake cylinder pressure of compressed air brakes fitted to railway vehicles, in association with an air brake distributor valve or other control device, and in response to a change in vehicle
25、 load that is either continuously variable or in two stages i.e. empty - loaded. Relay valves operating with other pressures, in particular the brake pipe pressure, are not included. This European Standard specifies the requirements for the design, manufacture and testing of relay valves. 2 Normativ
26、e references The following referenced documents 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 14478:2005, Railway applications
27、Braking Generic vocabulary EN 15355, Railway applications Braking Distributor valves and distributor-isolating devices EN 15625, Railway applications Braking Automatic variable load sensing devices EN 50125-1, Railway applications Environmental conditions for equipment Part 1: Equipment on board rol
28、ling stock EN 60721-3-5:1997, Classification of environmental conditions Part 3: Classification of groups of environmental parameters and their severities Section 5: Ground vehicle installations (IEC 60721-3-5:1997) EN 61373:1999, Railway applications Rolling stock equipment Shock and vibration test
29、s (IEC 61373:1999) EN ISO 228-1, Pipe threads where pressure-tight joints are not made on the threads Part 1: Dimensions, tolerances and designation (ISO 228-1:2000) ISO 8573-1:2001, Compressed air Part 1: Contaminants and purity classes 3 Terms and definitions, symbols and abbreviations For the pur
30、poses of this document, the terms and definitions, symbols and abbreviations given in EN 14478:2005 and the following apply. 3.1 Terms and definitions 3.1.1 relay valve device, the main function of which is to control a pneumatic output pressure as a function of the variation of one or more input pr
31、essures NOTE 1 See Figure 1. BS EN 15611:2008+A1:2010EN 15611:2008+A1:2010 (E)6 Key 1 first input pressure 2 second input pressure 3 control signal - continuous load sensing pressure (Lcp), or control signal - empty/load signal pressure (Lsp), or mechanical input (lever) or electrical input 4 auxili
32、ary reservoir pressure, supply pressure (AR) 5 output pressure 6 relay valve Figure 1 Relay valve, pressures and control signals NOTE 2 The definition of “relay valve” in EN 14478 is specific to a load dependant relay valve. This EN standard considers one or more input pressures in accordance with t
33、he diagram in Figure 1. 3.1.2 input pressure control pressure received by the relay valve NOTE Pressure generally considered as being the output pressure from a distributor or a brake control unit; sometimes referred to as pilot pressure or dummy brake cylinder pressure. 3.1.3 output pressure pressu
34、re output from the relay valve NOTE Pressure generally considered as being the brake cylinder pressure when the relay valve is used in a variable load braking system. This pressure can also be used as the input pressure to another relay valve. The output pressure can obtain one, two or three fixed l
35、evels or it can be changed continuously between a minimum and a maximum or vice versa. 3.1.4 relay valve ratio ratio of the output pressure to input pressure BS EN 15611:2008+A1:2010EN 15611:2008+A1:2010 (E)7 3.1.5 control signal signal received from the continuous load sensing device (Lcp) or empty
36、 - loaded changeover device (Lsp) or a mechanical input (lever) or an electrical input that varies the relay valve ratio dependant on vehicle load NOTE This can also be a speed signal or other parameter, dependant on the relay valve application. 3.1.6 Relay valve types 3.1.6.1 single stage relay val
37、ve relay valve type A relay valve with one fixed relay valve ratio, where the ratio can be less (step-down), equal or greater (step-up) than 1 3.1.6.2 multi stage relay valve relay valve type B relay valve with more than one fixed relay valve ratio, where the ratios can be less (step-down), equal or
38、 greater (step-up) than 1 3.1.6.2.1 relay valve type B1 multi stage relay valve that can change relay valve ratio during a brake application NOTE Typically used on vehicles normally operated in empty or fully loaded condition. 3.1.6.2.2 relay valve type B2 multi stage relay valve where a change of r
39、elay valve ratio cannot take place during a brake application NOTE Blocking the relay valve ratio during brake application is typically used to avoid frequent changeovers taking place on vehicles operated near the changeover weight. 3.1.6.2.3 empty/load relay valve specific type of multi stage relay
40、 valve (type B1 or B2) with only two stages, giving an empty (tare) or a loaded output pressure proportional to input pressure dependant on the load signal input 3.1.6.3 variable load relay valve relay valve type C relay valve with a continuously changeable relay valve ratio, where a load signal is
41、used to change the ratio 3.1.6.4 multi stage variable load relay valve relay valve type C1 relay valve with a continuously changeable relay valve ratio, where a load signal is used to change the ratio and with a multi stage feature added NOTE Typically a load signal is used to change the relay valve
42、 ratio and a control signal (automatic or manual) is used to change the stage(s). The typical result is that at the same load and input pressure, in the lower stage (e.g. P-mode, passenger train) results a lower output pressure and in a higher stage (e.g. R-mode, rapid passenger train) this results
43、in a higher output pressure. 3.1.6.5 two (multi) input relay valve relay valve type D relay valve (type A, B or C) with two (or more) input pressures, controlling a single output pressure BS EN 15611:2008+A1:2010EN 15611:2008+A1:2010 (E)8 3.1.6.6 variable load relay valve with kinked characteristic
44、relay valve type E variable load relay valve (Type C) with a special, non-linear characteristic, which automatically comes into operation when the vehicle has more than a certain load NOTE This function reduces (in comparison with a linear characteristic) the output pressure for low input pressures
45、to a certain level to limit the heat impact to the wheels during continuous braking. 3.1.7 sensitivity change of input pressure causing a variation of output pressure, when the change of input pressure is in the same direction, with no overshoot or reversal 3.1.8 initial sensitivity change of input
46、pressure, starting at 0 bar which causes the output pressure to start increasing NOTE See Figure 2. 3.1.9 sensitivity at reversal change of input pressure causing a variation of output pressure, when the change of input pressure is changing its direction from increasing to decreasing NOTE See Figure
47、 2. 3.1.10 hysteresis difference in output pressure with the same input pressure, where the input pressure is first rising to a value and then, having been taken past that value, subsequently falls to the same value NOTE See Figure 2. BS EN 15611:2008+A1:2010EN 15611:2008+A1:2010 (E)9 Key 1 initial
48、sensitivity 2 hysteresis 3 sensitivity at reversal NOTE The figure is simplified for illustrative purposes, e.g. the real pressure development is not shown. Figure 2 Hysteresis and sensitivity 3.1.11 initial braking position first braking step corresponding to a reduction of the brake pipe pressure
49、of 0,4 bar to 0,5 bar, which results in an input pressure to the relay valve of (0,7 0,1) bar 3.1.12 normal litre Nl unit of mass for gases equal to the mass of 1 l at a pressure of 1,013 2 bar (1 atmosphere) and at a standard temperature, often 0 C or 20 C NOTE Airflow is often stated in normal litres per minute (Nl/min). 3.2 Symbols p pressure piinput pressure pooutput pressure t time BS EN 15611:2008+A1:2010EN 15611:200
