高速列车受电弓气动噪声研究.docVIP

高速列车受电弓气动噪声研究 高阳 李新一 吴健 中车长春轨道客车股份有限公司国家轨道客车工程研发中心 X 关注成功！ 加关注后您将方便地在 我的关注中得到本文献的被引频次变化的通知！ 新浪微博 腾讯微博 人人网 开心网 豆瓣网 网易微博 摘????要： 随着我国铁路交通事业的蓬勃发展, 高速列车已被广泛的应用于铁路营运中, 其高速、舒适、快捷的特点已深受广大乘客的好评, 但同时, 高速列车的噪声问题也倍受人们关注。气动噪声是高速列车的主要噪声之一, 列车高速行驶时, 受电弓产生的气动噪声尤为突出。对受电弓气动噪声的产生机理及降噪措施进行了介绍, 并以国外受电弓气动噪声的研究经验为基础, 对我国CRH3型车的两种受电弓结构进行了缩比模型风洞试验, 对比分析了受电弓升降弓几个状态下的气动噪声特性。 关键词： 高速列车; 气动噪声; 受电弓; 风洞试验; 作者简介：高阳 (1980—) 男, 高级工程师 Aerodynamic Noise Research on High-speed Train Pantograph GAO Yang LI Xinyi WU Jian National Rail Vehicle Engineering RD Center, CRRC Changchun Railway Passenger Vehicle Co, Ltd; Abstract： High-speed train has been widely used in railway operation with the vigorous development of the railway transportation industry in our country, the characteristics of its high speed, comfortable and fast has been well received by the majority of passengers, but at the same time, the noise problem of high speed train is also paid attention to.Aerodynamic noise is one of the main noises of high speed train, when the train is running at high speed;the aerodynamic noise generated by the pantograph is particularly prominent.In this paper, the generation mechanism of pantograph aerodynamic noise and noise reduction measures are introduced, and based on the research experience of the aerodynamic noise of the pantograph in foreign countries, the shrinkage ratio model wind tunnel test of the two pantograph structure of the CRH3 vehicle is carried out, and the aerodynamic noise characteristics of the pantograph in different work conditions are analyzed and compared. Keyword： High-speed train; aerodynamic noise; pantograph; wind tunnel test; 随着我国客运专线和城际高速铁路的建设, 高速列车车速正不断向着300km/h以上迈进, 京沪高铁等国内多条重要线路的高铁列车的行驶速度达到350km/h, “十二五”规划中高速列车的行驶速度要向500km/h迈进。然而, 高速列车在高速行驶中所带来的驾乘舒适度和对环境的影响问题是制约高速铁路发展的重要原因, 特别是对于城际高速铁路。高速列车在高速行驶时会加剧列车气动噪声问题, 因为, 高速列车的噪声主要由牵引噪声、轮轨噪声和气动噪声等组成, 而气动噪声随着速度大约以60lgv (v为列车运行速度) 的关系增长, 即随行驶速度的6次方增长, 而轮轨噪声以30lgv的速率增加, 即随行驶速度的3次方增长[1] (如图1所示) 。可见, 高速行驶时气动噪声比其他噪声随速度的增加更