单车明线工况下高速列车室内压力波动研究

发布时间：2018-05-30 17:47

  本文选题：动车组 + 耳鸣　； 参考：《中南大学学报(自然科学版)》2014年08期

【摘要】：对已在明线工况下连续运营一段时间的16节长编组200 km/h动车进行实车试验,利用车载测试系统重点测试列车经过分相区、紧急制动以及列车到站开启车门3种工况下,客室内气压变化率和室内外压差;并根据车体气密性指数求解方法,分析车体动态气密性指数随时间变化关系。根据测试结果,结合动车组通风换气装置结构特点分析动态气密性指数增大发生耳鸣现象的原因,并提出改进措施。研究结果表明:随着运行时间的增加,室内负压呈线性逐渐增大,室内最大负压为-982 Pa;室内压力变化率随室内外压差的变大而逐渐增大,列车到站开启车门工况下3 s变化率最大为602 Pa/(3 s),1 s变化率最大为564 Pa/s,经过分相区时的最大3 s变化率和1 s变化率分别为263 Pa/(3 s)和93 Pa/s。车体动态气密性指数随运行时间的增加而增加,最大值为11.58。
[Abstract]:The actual vehicle test was carried out for the 16 section 200 km/h train, which has been running for a period of time under the working condition of the Ming line. The vehicle test system was used to test the change rate of the air pressure in the passenger compartment and the pressure difference indoors and outside under the 3 kinds of operating conditions of the train passing through the phase division area, emergency brake and the train to the station to open the door; and the calculation method based on the air tightness index of the car body was carried out. The dynamic air tightness index of the car body is analyzed with time. According to the test results and combining the structural characteristics of the ventilating and ventilating device of the EMU, the cause of the dynamic air tightness index is analyzed, and the improvement measures are put forward. The results show that the negative pressure in the room increases linearly with the increase of the running time and the maximum negative pressure in the room. Pressure is -982 Pa; the change rate of indoor pressure increases gradually with the pressure difference between inside and outside room. The maximum change rate of 3 s is 602 Pa/ (3 s) and the maximum change rate of 1 s is 564 Pa/s. The maximum 3 s change rate and 1 s change rate are 263 Pa/ (3 s) and 93 Pa/s. body dynamic air tightness index. The increase of time is increased, the maximum value is 11.58.
【作者单位】： 中南大学交通运输工程学院 轨道交通安全教育部重点实验室;
【基金】：国家自然科学基金重点资助项目(U1134203);国家自然科学基金青年科学基金资助项目(51205418)
【分类号】：U270.1;U451.3
，

本文编号：1956224