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1、BS EN 15612:2008 ICS 45.060.01 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BRITISH STANDARD Railway applications Braking Brake pipe accelerator valve Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI This Briti
2、sh Standard was published under the authority of the Standards Policy and Strategy Committee on 31 December 2008 BSI 2008 ISBN 978 0 580 58007 9 Amendments/corrigenda issued since publication DateComments BS EN 15612:2008 National foreword This British Standard is the UK implementation of EN 15612:2
3、008. The UK participation in its preparation was entrusted to Technical 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 resp
4、onsible for its correct application. Compliance with a British Standard cannot confer immunity from legal obligations. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM E
5、N 15612 November 2008 ICS 45.060.01 English Version Railway applications - Braking - Brake pipe accelerator valve Applications ferroviaires - Freinage - Valve acclratrice de vidange Bahnanwendungen - Bremse - Schnellbremsbeschleunigungsventil This European Standard was approved by CEN on 27 Septembe
6、r 2008. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving 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 obtai
7、ned on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official 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 Managem
8、ent Centre has the same status as the official versions. 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, Norwa
9、y, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: rue de Stassart, 36 B-1050 Brussels 2008 CENAll rights of exploitation in any form
10、and by any means reserved worldwide for CEN national Members. Ref. No. EN 15612:2008: E Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EN 15612:2008 (E) 2 Contents Page Foreword3 1 Scope 4 2 Normative references4 3 Te
11、rms and definitions .4 4 Design and manufacture.5 4.1 General5 4.2 Functional requirements.5 4.3 Vibration and shocks requirements.7 4.4 Environment requirements.7 4.5 Compressed air quality.10 4.6 Service life10 4.7 Fire behaviour10 4.8 External appearance10 4.9 Design requirements regarding pressu
12、re stress .10 4.10 Interfaces11 5 Materials .11 6 Type tests .11 6.1 General11 6.2 Individual brake pipe accelerator tests .11 6.3 Simulated train consist tests17 7 Routine test and inspection19 8 Documentation.19 9 Designation 20 10 Identification and marking20 Annex ZA (informative) Relationship b
13、etween this European Standard and the Essential Requirements of EU Directive 96/48/EC, as modified by Directive 2004/50/EC 21 Annex ZB (informative) Relationship between this European Standard and the Essential Requirements of EU Directive 2001/16/EC of the European Parliament and of the Council of
14、19 March 2001 on the interoperability of the trans-European conventional rail system, as modified by EU Directive 2004/50/EC of 29 April 2004 .22 Bibliography23 Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EN 15612:
15、2008 (E) 3 Foreword This document (EN 15612:2008) has been prepared by Technical Committee CEN/TC 256 “Railway applications”, the secretariat of which 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
16、, at the latest by May 2009, and conflicting national standards shall be withdrawn at the latest by May 2009. 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
17、all such patent rights. This European Standard 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 96/48 and EU Directive 2001/16, as modified by EU Directive 2004/50. For r
18、elationship with EU Directive(s), see informative Annexes ZA and ZB, which are integral parts 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
19、, 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 the United Kingdom. Licensed Copy: London South Ban
20、k University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EN 15612:2008 (E) 4 1 Scope This European Standard is applicable to brake pipe accelerator valves designed to vent the brake pipe of railway vehicles when an emergency brake application is initiated, w
21、ithout taking the type of vehicles and track-gauge into consideration. This European Standard specifies the requirements for the design, manufacture and testing of brake pipe accelerator valves. 2 Normative references The following referenced documents are indispensable for the application of this d
22、ocument. 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 Braking Generic vocabulary EN 14601, Railway applications Straight and angled end cocks for bra
23、ke pipe and main reservoir pipe EN 15355, Railway applications Braking - Distributor valves and distributor-isolating devices EN 50125-1, Railway applications Environmental conditions for equipment Part 1: Equipment on board rolling stock EN 60721-3-5:1997, Classification of environmental conditions
24、 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 tests (IEC 61373:1999) EN ISO 228-1, Pipe threads where pressure-tight joint
25、s 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 For the purposes of this document, the terms and definitions given in EN 14478:2005 and the following apply. 3
26、.1 brake pipe accelerator valve device connected to the brake pipe of a vehicle, which operates in response to seeing a rapid fall in brake pipe pressure to ensure a continuing rapid fall to below 2,5 bar 3.2 braking mode “goods ” braking mode “freight” braking mode “G“ braking mode characterized by
27、 slow brake application and release times specific for distributor valves used on freight trains for slow speed 3.3 braking mode “passenger” braking mode “P” braking mode characterized by fast brake application and release times specific for distributor valves used on trains for passenger traffic Li
28、censed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EN 15612:2008 (E) 5 3.4 normal litre Nl unit of mass for gases equal to the mass of 1 l at a pressure of 1,013 2 bar (one atmosphere) and at a standard temperature, often 0
29、 C or 20 C NOTE Airflow is often stated in normal litres per minute (Nl/min). 3.5 operating pressure reference input pressure in full release position NOTE This is normally 5 bar brake pipe pressure but can be 4 bar or 6 bar. 3.6 quick service function function of a distributor valve which allows, w
30、hen applying the brake from stand-by and released position, the local fast venting of brake pipe pressure by a certain specified amount and at a certain specified gradient, to provide pneumatic brake signal transmission through a train 3.7 quick service device device that fulfils the quick service f
31、unction 3.8 emergency brake application brake pipe pressure fall seen at the accelerator valve as a result of a demand for an emergency brake application from any source 3.9 overcharge increase in brake pipe pressure above normal operating pressure 4 Design and manufacture 4.1 General The design and
32、 manufacture of the brake pipe accelerator valves shall take the requirements of this standard into account for all intended operating conditions. 4.2 Functional requirements 4.2.1 General Brake pipe accelerator valves shall be able to operate with all interoperable distributors and existing interop
33、erable brake pipe accelerator valves. The brake pipe accelerator valve shall be ready to operate when the brake pipe has reached its operating (running) pressure. The brake pipe accelerator valve shall operate in response to a defined rapid fall of brake pipe pressure to ensure a continuing rapid fa
34、ll to below 2,5 bar. 4.2.2 Operating requirements The following operating requirements are defined in relation to a 5 bar brake pipe operating (running) pressure. When an emergency brake application occurs, the brake pipe accelerator valves shall create a sufficiently rapid reduction in brake pipe p
35、ressure to ensure the rapid increase in brake cylinder pressure on every vehicle Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EN 15612:2008 (E) 6 in the train set. When the pressure in the brake pipe has fallen quic
36、kly to below 2,5 bar, and within no more than 4 s after the brake pipe accelerator valve commences operation, the brake pipe accelerator valve shall stop venting air in such a way that the brake pipe can rapidly be refilled. This requirement shall be proven by testing in accordance with 6.2.4.4. No
37、functional errors shall occur in the operation of the brake pipe accelerator valve at operating (running) pressures of (5 1) bar. This requirement shall be proven by testing in accordance with 6.2.4.10. 4.2.3 Train/vehicle behaviour The brake pipe accelerator valve shall exhaust the air from the bra
38、ke pipe without causing any adverse effect on vehicle/train behaviour. This requirement shall be proven by testing in accordance with 6.3. 4.2.4 Affect of overcharge 4.2.4.1 Overcharge after full service application The brake pipe accelerator valve shall not come into operation due to the effect of
39、an operating pressure overcharge after a full service brake application, which allows a build up of brake pipe pressure above normal operating pressure to 6 bar. It shall be taken into account that this overcharge can be present for up to 40 s in braking mode “G” and 10 s in braking mode “P” after a
40、 full service application. This requirement shall be proven by testing in accordance with 6.2.4.8. 4.2.4.2 Overcharge starting from operating pressure The brake pipe accelerator valve shall not come into operation if the brake pipe pressure, starting from the operating pressure, is raised to 6 bar f
41、or 2 s, then is reduced to 5,2 bar in 1 s, followed by a return to the operating pressure at a rate of 0,15 bar in 60 s. This requirement shall be proven by testing in accordance with 6.2.4.9. 4.2.5 Affect of individual vehicle The operation of the brake pipe accelerator valve shall not be affected
42、by an individual vehicle with a brake pipe volume not exceeding 25 l, where a brake pipe accelerator valve is not fitted or the brake has been isolated. This shall apply irrespective of the position of that vehicle in the train consist. This requirement shall be proven by testing in accordance with
43、6.3. 4.2.6 Subsequent emergency application The brake pipe accelerator valve shall come into operation when an emergency brake application is made after a full service brake application. This requirement shall be proven by testing in accordance with 6.2.4.7. 4.2.7 Sensitivity The brake pipe accelera
44、tor valve shall come into operation no later than 2 s after the pressure in the brake pipe, venting to atmosphere, has fallen from 5 bar to 3,2 bar within 3 s. This requirement shall be proven by testing in accordance with 6.2.4.4. 4.2.8 Insensitivity to brake pipe pressure fall The brake pipe accel
45、erator valve shall not come into operation when the pressure in the brake pipe falls uniformly from 5 bar to 3,2 bar over 6 s with the distributor inoperative. Continuing the pressure fall down to 2,5 bar shall not cause the brake pipe accelerator valve to operate. This requirement shall be proven b
46、y testing in accordance with 6.2.4.5. Licensed Copy: London South Bank University, South Bank University, 31/01/2009 03:21, Uncontrolled Copy, (c) BSI BS EN 15612:2008 EN 15612:2008 (E) 7 4.2.9 Insensitivity to distributor valve quick service device operation The brake pipe accelerator valve shall n
47、ot operate during the initial stage of service braking due to operation of the distributor valve internal quick service device. This requirement shall be proven by testing in accordance with 6.2.4.6. 4.2.10 Isolation 4.2.10.1 If the brake pipe accelerator valve is incorporated in the distributor, it
48、 shall be inoperative after the distributor has been isolated. This requirement shall be proven by testing in accordance with EN 15355 as part of the distributor valve test. 4.2.10.2 If the brake pipe accelerator valve is fitted separately from the distributor it shall be possible to isolate the bra
49、ke pipe accelerator valve from the brake pipe and vent its pressure, using a suitable valve or device in the pipework such that it can be sealed in the normal open position with the isolating handle in the vertical down position. NOTE This requirement will be specified in the relevant vehicle system standard. 4.2.11 Leakage Leakage of the brake pipe accelerator valve shall be such that technical performance as specified by this standard is met without restrictions. The sealing arrangement within the brake pipe accelerator valve shall prevent los