摘要
随着路网交通量的增长,部分公路隧道已达到交通量设计峰值,通风设施面临高负荷运行、安全运行风险加大的现实问题。依托秦岭终南山公路隧道轴流风机修复改造工程,针对轴流风机动叶可调系统的故障率高、精度要求高且维修费用昂贵等问题,提出静叶可调替代动叶可调的修复改造方案,通过结构分析和调整实现叶片角度静止可调运行方式;针对电机轴承高故障率,采用双参数威布尔分布函数描述电机轴承的故障变化率,提出一种优化轴承维护周期的模型,应用于秦岭终南山公路隧道风机轴承维护计划。实验结果表明,改造后的轴流风机满足规范设计要求,运行效果良好。分析得到的隧道风机维护计划合理经济,保证轴承的可靠运行并充分发挥其使用价值。
With the growth of the traffic volume of the road network,some highway tunnels have reached the design peak of traffic volume,and the ventilation facilities are facing the practical problems of high load operation and increased risk of safe operation.Relying on the repair and reconstruction project of axial flow fan in Qinling Zhongnanshan Highway Tunnel,aiming at the problems of high failure rate,high precision requirement and high maintenance cost of axial flow wind blade adjustable system,a repair and reconstruction scheme of static blade adjustable instead of moving blade is put forward.through structural analysis and adjustment,the static adjustable operation mode of blade angle is realized.In view of the high failure rate of motor bearings,the fault change rate of motor bearings is described by two-parameter Weibull distribution function,and a model for optimizing bearing maintenance cycle is proposed,which is applied to the fan bearing maintenance plan of Qinling Zhongnanshan Highway Tunnel.The experimental results show that the modified axial flow fan meets the design requirements of the specification and the operation effect is good.The maintenance plan of the tunnel fan obtained from the analysis is reasonable and economical,which ensures the reliable operation of the bearing and gives full play to its use value.
出处
《科技创新与应用》
2024年第16期148-151,共4页
Technology Innovation and Application
基金
2021年度国家重点研发计划重点专项“重大自然灾害防控与公共安全”专项“长大公路隧道突发事故应急处置关键技术与装备”(2021YFC3002000)项目课题五“隧道典型事故灾变物理试验平台与试验验证及应用示范”(2021YFC3002005)。
关键词
隧道工程
轴流风机
修复改造
轴承维护周期
长大隧道
tunnel engineering
axial flow fan
repair and transformation
bearing maintenance cycle
long tunnel
