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1、ICS 45.060.01S 30TSRailway Industrial Standard of the Peoples Republic of ChinaTB/T 32502010Specifications of Sealing Design and Test for Powered Car Train-set (EMU)Issued on January 12, 2011Enforced on July 01, 2011Issued by Ministry of Railways of PRCTB/T 32502010Table of ContentsForeword11Scope12
2、Normative References13Terms and Definitions14Sealing Design15Sealing Test1ForewordThis Standard was drafted according to the rules specified in GB/T 1.12009.This Standard was proposed and is under centralized management of CNR Sifang Rolling Stock Research Institute Co, Ltd.This Standard was drafted
3、 by Locomotive & Rolling Stock Institute of China Academy of Railway Sciences, CNR Sifang Rolling Stock Research Institute Co, Ltd., Changchun Railway Vehicles Co., Ltd., CSR Qingdao Sifang Locomotive & Rolling Stock Co., Ltd, Tangshan Railway Vehicle Co., Ltd., and Low-temperature test station of P
4、roduct Quality Surveillance Test Center of the Ministry of Railway.The main drafters of this Standard are Wang Yueming, Chen Houchang, Ouyang Zhongzhi, Chen Ping, Li Zeyu, Zhang Fangtao, Li Minggao, Wang Wei.Specifications of Sealing Design and Test for EMU1ScopeThis Standard defines the sealing des
5、ign requirements and test method of EMU.This Standard is applicable to the sealing design and test of the EMU with maximum running speed of 200 km/h-350 km/h. It can also be used as a reference for the other railway vehicles with the same speed grade.2Normative ReferencesThe following documents are
6、essential for the application of this document. For the dated reference, only the dated version shall be applicable for this document. For the undated reference, the latest version (including all amendments) shall be applicable for this document.GB/T 4549.12004 Railway Vehicle VocabularyPart 1: Basi
7、c VocabularyTB/T 18021996 Rain Leakage Test Method for Railway Vehicles3Terms and DefinitionsThe terms and definitions defined in GB/T 4549.12004 and the following are applicable to this document.3.1Air-tightness Capacity of impeding air leakage.GB/T 4549.12004, definition 6.143.2Water-tightnessCapa
8、city of impeding water leakage.4Sealing Design4.1Sealing requirements of whole EMU 4.1.1Except for the machine room and equipment cabin outside the car, the EMU shall be designed with air tight to ensure safety and conformity of passengers and attendants.4.1.2The entire EMU can form an independent p
9、ressurized airtight cabin (hereinafter referred as airtight cabin) or form three independent airtight cabins, i.e. passenger cab, head car and drivers cab in tail car.4.1.3The air-tightness of EMU is guaranteed jointly by air-tightness of car structure, window, door, diaphram, air duct of air-condit
10、ioning and ventilation system and various through-the-wall cables, electrical, air and water pipelines, etc. Favorable air-tightness shall be maintained under 6 kPa pressure.4.1.4During the design, leakage area shall be minimized to ensure air-tightness after the whole EMU train set is completed. Th
11、e leakage area shall be weighted and allocated as per the equivalent length of combined position gap of the components forming the airtight structure; the equivalent length shall be determined with the following method:Diaphram L1=a1I1k1.(1)Car window L2=a2I2k2.(2)Car door L3=a3I3k3.(3)Pipeline L4=a
12、4I4k4.(4)Air duct and leaked valve and cover, etc. L5=a5I 5k5.(5)Car body structure L6=a6(L1+L2+L3+L4+L5).(6)Where,ai(i=l,2,3,4,5,6)weighting coefficient, which shall be determined as per the sealing performance of the whole EMU;Li(i=1,2,3,4,5,6)equivalent length of the combination between diaphram,
13、 window, door and through-the-wall pipeline and the car body respectively;Ii(i=1,2,3,4,5,6)actual length of the combination between diaphram, window, door and through-the-wall pipeline and the car body respectively;Ki(i=1,2,3,4,5,6)respective number of diaphram, window, door and through-the-wall pip
14、eline;limiting value of equivalent leakage area of the part j of component i is:SjSLi/(L1+L2+L3+L4+L5+L6) /ki .(7)Where,Ssum of equivalent leakage area of the airtight cabin, unit: square centimeter (cm2).4.1.5The leakage time limit of a certain airtight cabin shall be calculated with the following formula, which can be as a reference upon airtight test of components.Where,t leakage time of a certain airtight cabin, unit: second (s);Poair pressure at the beginning of timing, taken as 4kPa for the whole EMU;Peair pressure at the
