螺杆式主空压机排气冰堵分析及防治措施

Analysis and Prevention Measures of Vent Ice Block Issue in Screw Main Air Compressor

针对某动车组用螺杆式主空压机在极端低温高湿运用过程中出现排气冰堵问题,通过现场故障排查及理论分析其产生原因,进行了有针对性的优化整治、地面试验验证,整治后现车运用良好。鉴于该故障暴露的主空压机环境适应性问题,结合轨道交通特殊运用工况,提出后续主空压机预防低温冰堵、高温报警及润滑油乳化的智能化变频控制设计方向,以进一步提升轨道交通车辆用主空压机的耐环境能力和可用性。

In response to the problem of exhaust ice block during extreme low-temperature and high-humidity operation of a screw-type main air compressor for a series High-speed train,we have made a targeted optimization reconstruction and ground test to verify the causes through on-site troubleshooting and theoretical analysis,and the vehicle upon reconstruction is in good operation.In view of the environmental adaptability of the main air compressor exposed by the fault and the special operating conditions of rail transit,we propose to be engaged in intelligent variable frequency control on the main air compressor for rail transit vehicles to prevent low temperature ice blockage,high temperature alarm and lubricant emulsification,so as to further improve the environmental resistance and availability of the main air compressor for rail transit vehicles.