川藏铁路电力机车司机室空气品质控制研究OA北大核心CSTPCD
Research on air quality control in electric locomotive driver's cab along Sichuan-Tibet railway
为了保证电力机车在川藏铁路运行过程中司机室内有良好的空气品质,通过调研雅安至林芝段沿线海拔、温度及隧道热害情况,分析人体对空气成分的耐受性,建立司机室空气品质仿真模型,研究了机车运行过程中司机室内O2 和CO2质量比的动态变化特性.结果表明:该路段部分隧道存在热害及有毒有害气体问题;人体对空气成分的耐受性要求为司机室内CO2 质量百分比不应超过0.23%,以及O2 质量百分比应控制在21.5%～25.4%;司机室下方的O2 质量百分比高于司机头部上方,司机前方的O2 质量百分比较低.人员头部上方区域的O2 质量百分比大多都在19%以下,室内前端的CO2 质量百分比达到0.28%以上;机车以160 km/h的时速运行在热害及有毒气体隧道内关闭新风系统,而在其他路段将新风量从常规的25 m3/(h·人)增加到40 m3/(h·人),可使司机室内O2 和CO2 质量百分比均满足室内环境要求;当车速一定时,随着新风量的提高,司机室内环境会有较好的改善;当新风量一定时,随着机车时速的增加,司机室内所需满足空气环境要求的新风量将会减少.研究结果可为川藏铁路机车设计提供参考依据.
In order to ensure good air quality in the driver's cab of electric locomotives when running along the Sichuan-Tibet Railway,based on the investigation of the altitude,temperature and thermal damage in tunnels along the section from Ya'an to Linzhi as well as analysis of the human body's tolerance to air components,a numerical model was established to study the dynamic characteristics of O2 and CO2 mass percentage in the electric locomotive driver's cab.The results show that there exist the thermal damage and toxic gases in some tunnels.The tolerance of the human body to air components requires that the mass percentage of CO2 in the driver's cab should not exceed 0.23%,and the mass percentage of O2 should be controlled in the range of 21.5%～25.4%.The O2 mass percentage in lower part of the cab is higher than that above the driver's head,and the O2 mass percentage is lower in front of the driver.The O2 mass percentage in the area above the driver's head are generally lower than 19%,and the CO2 mass percentage at the front end of the cab reaches more than 0.28%.When the locomotive runs at a speed of 160 km/h in a tunnel with thermal damage and toxic gases,the fresh air system has to be shut down,while increasing the fresh air volume from the conventional 25 to 40 m3/(h·人)in other sections can make O2 and CO2 mass percentage in the driver's cab meet the indoor environment requirements;When the speed is constant,with the increase of the fresh air volume,the driver's indoor environment will be well improved;when the fresh air volume is constant,with the increase of the locomotive speed,the fresh air volume in the driver's cab that needs to meet the air environment requirements will be reduced.The research results can provide reference basis for the design of locomotives on the Sichuan Tibet railway.
肖峰敏;苏雄;易柯;肖云华;曹小林;王聪;饶政华;左近龙
中车株洲电力机车有限公司,湖南株洲 412001||重载快捷大功率电力机车全国重点实验室,湖南株洲 412001中车株洲电力机车有限公司,湖南株洲 412001中南大学 能源科学与工程学院,长沙 410083
机械工程
川藏铁路电力机车新风空气品质仿真
Sichuan-Tibet railwayelectric locomotivefresh airair qualitysimulation
《流体机械》 2024 (009)
74-83 / 10
湖南省自然科学基金项目(2020JJ4722);重载快捷大功率电力机车全国重点实验室开放课题(2021KJ134;13121430001290)
评论