循环氧脱硫塔贫溶剂泵轴断裂失效分析

doi:10.13228/j.boyuan.issn1001-0777.20220040

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摘要针对某型氧脱硫塔贫溶剂泵在正常工况下进行作业时其泵轴发生断裂,进行了原因分析以及提出改进措施。首先对失效泵轴进行宏观分析,根据实际断裂特点确定其断裂形式,然后在轴断面选择一点进行金相分析,其次分析失效泵轴的化学成分,最后运用扫描电镜对轴断面进行微观分析,并且在韧窝区和沿晶区进行了能谱对比,发现各区元素并无明显差异,基于以上分析,得出泵轴断裂失效原因可能与轴的异常磨损和不当的热处理工艺有关,同时提出有针对性的预防措施。

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	孙小兵
	姚阳明
	彭安校
	尹鹏
	王小林
	梁圣钊

关键词 ：泵轴, 断裂, 失效分析, 预防措施

Abstract：Aiming at the fracture of pump shaft of a lean solvent pump in an oxygen desulfurization tower under normal working conditions, the causes were analyzed and the improvement measures were put forward. Firstly, the failure pump shaft was analyzed macroscopically, and the fracture form was determined according to the actual fracture characteristics. Then, the metallographic analysis was carried out at a point of the shaft section. Thirdly, the chemical composition of the failure pump shaft was analyzed. Finally, the fracture section of shaft was analyzed microscopically using scanning electron microscope. The energy spectrum comparison was carried out in the dimple region and the intergranular region. It was found that the elements in various areas had no significant difference. Based on the analyses above, the fracture failure of the pump shaft may be related to the abnormal wear and improper heat treatment process of the shaft, and meanwhile, the corresponding preventive measures were proposed.

Key words： pump shaft crack failure analysis preventive measure

收稿日期: 2022-06-02

引用本文:

孙小兵, 姚阳明, 彭安校, 尹鹏, 王小林, 梁圣钊. 循环氧脱硫塔贫溶剂泵轴断裂失效分析[J]. 物理测试, 2023, 41(2): 43-47. SUN Xiaobing, YAO Yangming, PENG Anxiao, YIN Peng, WANG Xiaolin, LIANG Shengzhao. Fracture failure analysis of lean solvent pump shaft in circulating oxygen desulfurization tower. PHYSICS EXAMINATION AND TESTING, 2023, 41(2): 43-47.

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