关于CRH2A/2C平台动车组干燥装置用板式止回阀漏风故障分析及解决措施  

Trouble-shooting for Air Leakage And Solution of Plate Check-valve for Drying Device of CRH2A/2C EMU

作　　者：李逵 LI Kui(CRRC Nanjing Puzhen Haitai Brake Equipment Co.,Ltd.,Nanjing 211800 Jiangsu,China)

机构地区：[1]南京中车浦镇海泰制动设备有限公司,南京211800

出　　处：《铁道机车车辆》2023年第4期139-143,共5页Railway Locomotive & Car

摘　　要：针对CRH2A/2C平台动车组干燥装置板式止回阀漏风问题,通过系统分析,寻找故障原因。根据故障原因优化板式止回阀阀芯橡胶材质,由低腈丁腈橡胶更改为中高腈丁腈橡胶,提高了橡胶耐油性,避免长期使用后因橡胶破损导致的漏风问题。Aiming at the air leakage problem of the plate check valve in the drying device of CRH2A/2C platform EMU,through systematic analysis,the cause of the failure was found,and the rubber material of the valve core of the plate check-valve was optimized according to failure reasons,and the rubber was changed from low nitrile rubber to medium high nitrile rubber,which improved the oil resistance of the rubber and avoided the air leakage problem caused by rubber breakage after long-term use.

关 键 词：板式止回阀 破损 耐油性 丙烯腈含量 

分 类 号：U266[机械工程—车辆工程]