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通过对某输油站输油主泵频繁出现非驱端轴承超温过热导致的停泵问题进行分析,指出故障表象是非驱端轴温逐渐升高并超标,而故障实质是主泵级间迷宫平衡套被通过平衡孔的夹带杂质的高压油流产生频繁抛丸冲蚀,导致轴向力逐渐不平衡,最终推力轴承不能平衡多余的轴向力;指出工艺管道布置方式是导致该输油站3#泵故障率最高、2#泵故障率次之、1#泵故障率最低的原因。基于这些因素,提出改进措施:在运行管理环节应采取调整进站过滤器滤网目数、缩短过滤清理周期、加强对重点管段的清管工作等措施;在站场工艺环节,应增加新型高效强磁除锈装置的技术改造。实际应用结果表明:上述措施可有效控制进入输油主泵的杂质量,从而保护主泵内部构件,特别是级间迷宫平衡套,有效地保证了输油主泵长周期运行。
By analyzing the stoppage pump caused by frequent overheating and overheating of non-driven end bearing in the main oil pump of a gas station, it is pointed out that the appearance of fault is that the temperature of non-driven end shaft gradually increases and exceeds the standard, The balance sleeve is frequently ejected by the high-pressure oil flow passing through the balance hole entrained with impurities, resulting in gradual imbalance of the axial force and eventually the thrust bearing can not balance the surplus axial force. It is pointed out that the process piping is arranged to cause the gas station 3 # pump the highest failure rate, 2 # pump failure rate followed, # 1 pump the lowest failure rate. Based on these factors, some improvement measures are proposed: measures such as adjusting the mesh number of the inbound filter strainer, shortening the filtration and cleaning cycle, and strengthening the pigging work of the key pipelines should be taken into consideration in the operation and management processes; new and highly efficient Technical Transformation of Strong Magnetic Descaling Device. The practical application shows that the above measures can effectively control the amount of impurities entering the main pump and thus protect the internal components of the main pump, especially the inter-stage maze bushing, which effectively ensures the long-term operation of the main pump.