动静态气密性分析方法及其在动车组上的应用

李明; 张雷; 刘斌; 孔繁冰

doi:10.6052/0459-1879-20-230

动静态气密性分析方法及其在动车组上的应用

doi: 10.6052/0459-1879-20-230

中车唐山机车车辆有限公司, 河北唐山 064000

基金项目: 1)中央引导地方科技发展资金(206G2201Z);中国铁路总公司科技研究开发计划资助项目(P2018J003)

详细信息

作者简介:
2) 李明, 教授级高工, 主要研究方向: 空气动力学及综合节能技术. E-mail: sjc-liming@tangche.com

通讯作者:
李明

中图分类号: U266.2
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出版历程
- 收稿日期: 2020-06-29

DYNAMIC AND STATIC AIR TIGHTNESS ANALYSIS METHOD AND THEIR APPLICATION IN EMU

Research and Development Department, CRRC Tangshan Co.Ltd., Tangshan, Tangshan 064000, Hebei, China

摘要

摘要: 随着运行速度的提升, 高速动车组受到的外部激扰愈发剧烈. 尤其是动车组通过隧道和在隧道内交会时, 车体外表面产生的剧烈瞬变压力传入车厢内, 会引起司乘人员耳感不适等问题. 为研究动车组运行过程中的气密性能对车内气压波动和乘客乘坐舒适度的影响关系, 本文采用动静态测试结合的分析方法, 结合时间常数模型和当量泄漏面积模型, 通过在不同车辆内外部布置气压波动监测传感器, 对四级修前后的高速动车组进行了线路运行气动载荷测试; 针对不同部位具体结构特征开发了不同型式的气体泄漏量测试工装, 并对不同车辆的静态气密性进行了测试研究. 搭建了动静态气密性能分析模型并获得了动静态气密指数, 总结了隧道条件、运行速度等因素对车内压力波动和动态气密性能的影响规律, 同时针对典型气密部件的泄漏量和泄漏面积进行了分析, 对气密敏感部件进行了影响度排序并提出了优化方案. 本文提出的方法和相关研究数据对于关键部件的设计方案和修程修制优化具有一定的参考意义.
- 动车组 /
- 气密性 /
- 运行速度 /
- 动态测试 /
- 静态测试
Abstract: With the increase of running speed, the external disturbance of high speed EMU becomes more and more severe. In particular, when the EMUs pass through the tunnel and meet in the tunnel, the violent transient pressure generated by the external surface of the EMU is transmitted into the compartment, which will cause ear discomfort to drivers and passengers. Aiming at studying the influence of the airtight performance of EMU during operation on the pressure fluctuation and the passengers ride comfort, this article adopted the analysis method with combination of the dynamic and static test, combining with the time constant model and the equivalent leakage area model, through the internal and external arrangement of air pressure fluctuation monitoring sensors in different vehicles, carried out the aerodynamic load test before and after the operation of the EMU maintenance (Level IV) . According to the specific structural characteristics of different parts, different types of gas leakage testing equipment were developed to test and study static air tightness of different vehicles. The dynamic and static hermetic performance analysis model was established and the related air indexes were obtained, then the influence law of the condition of tunnel, speed and other factors on the interior pressure fluctuation and dynamic airtight performance was summarized. At the same time the leakage and the leakage area of the typical air tight parts were analyzed, and the effect of air sensitive parts sorting and optimized scheme were put forward. The method and relevant research data proposed in this paper have certain reference significance for the design scheme and repair program optimization of key components.
- EMU /
- air tightness /
- running velocity /
- dynamic test /
- static test

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参考文献(30)

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