摘要
为了研究煤矿用MB670型掘锚机主油泵诱发气蚀的原因,对应用工况及液压系统进行系统化分析,研究了由于动力压降诱发气蚀的因素,分析并计算了稳态与瞬态压降的理论值,并阐明了油气分离压的构成因素。结果表明:增大泵盖通流面积、设计合理的油膜间隙,能够有效控制动力压降,降低诱发气蚀的原因。以该研究为基础,对1^(#)主油泵通流面积进行优化设计,经过实际应用,解决了气蚀产生噪声的问题。同时提出了对工作管路优化设计的方案,可为掘锚机的维护和液压系统设计提供参考。
In order to study the cause of cavitation induced by the main oil pump of the MB670 bolter miner used in coal mine,the application conditions and hydraulic system were systematically analyzed.The factors that induce cavitation due to dynamic pressure drop were studied,the theoretical values of steady-state and transient pressure drops were analyzed and calculated,and the constituent factors of oil-gas separation pressure were clarified.The results show that increasing the flow area of the pump cover and designing a reasonable oil film gap can effectively control the dynamic pressure drop and reduce the cause of cavitation.Based on this study,the No.1 main pump flow area was optimized,through practical application,solved the problem of cavitation noise.At the same time,the optimal design scheme of working pipelines was proposed,which can provide references for the maintenance and the hydraulic system design of bolter miner.
作者
杨友晴
侯强
刘以全
Yang Youqing;Hou Qiang;Liu Yiquan(Ningbo Sail Hydraulic Transmission Co.,Ltd.,Ningbo 315800,China;High-end Equipment Research and Development Center,Shendong Coal Group,CHN Energy Group,Yulin 719315,China)
出处
《煤矿机械》
2022年第3期60-62,共3页
Coal Mine Machinery
