某立式多级筒袋泵的轴向力问题及处理措施
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摘要
针对国内某化工装置内所使用的2台立式多级筒袋泵在开车过程中出现的轴向力问题进行了分析和计算,并提出了更改导轴承材质、叶轮密封环尺寸等改造措施,显著降低了轴向力,解决了因轴向力带来的振动、抱轴、机封泄漏等问题,并增设了温度、振动监控仪表。此外,介绍了离心泵常用的轴向力平衡措施的原理及特点,以及轴向力问题的处理措施。
In this paper,the axial force problems of 2 vertical multistage pumps used in a chemical plant in China are analyzed and calculated,and modification measures are put forward including replacing the material of guide bearing and changing the size of the seal ring of impeller. The axial force is greatly reduced, and the vibration, shaft seizing and mechanical seal leakage problems caused by the axial force are solved. Temperature and vibration monitoring instruments are also added. In addition,the principle and characteristics of axial force balancing measures commonly used for centrifugal pumps are introduced,and the treatment measures for axial force are summarized,providing reference for centrifugal pump designer,project engineers and operators to deal with the axial force of centrifugal pump.
In this paper,the axial force problems of 2 vertical multistage pumps used in a chemical plant in China are analyzed and calculated,and modification measures are put forward including replacing the material of guide bearing and changing the size of the seal ring of impeller. The axial force is greatly reduced, and the vibration, shaft seizing and mechanical seal leakage problems caused by the axial force are solved. Temperature and vibration monitoring instruments are also added. In addition,the principle and characteristics of axial force balancing measures commonly used for centrifugal pumps are introduced,and the treatment measures for axial force are summarized,providing reference for centrifugal pump designer,project engineers and operators to deal with the axial force of centrifugal pump.
引文
[1] API 610—2010 Centrifugal pumps for petroleum,petrochemical and natural gas industries[S].
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[3] 李伟,施卫东,蒋小平,等.多级离心泵轴向力的数值计算与试验研究[J].农业工程学报,2012,28(23):52-59.
[4] 孔繁余,高翠兰,张旭峰,等.PBN65-40-250型屏蔽泵轴向力平衡计算及其试验[J].农业工程学报,2009,25(5):68-72.
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[6] 陆伟刚,张金凤,袁寿其.离心泵叶轮轴向力自动平衡新方法[J].中国机械工程,2007,18(17):2037-2040.
[7] 安芝贤,任振林.高压磁力驱动多级离心泵轴向力研究[J].甘肃科学学报,2003,15(2):94-98.
[8] 高红俐,杨继隆,叶力,等.分段式多级离心泵的轴向力计算[J].水泵技术,2000(2):8-12.
[9] 陆伟刚,李启锋,施卫东,等.减小叶轮后盖板直径的轴向力试验[J].排灌机械工程学报,2008,26(1):1-5.
[10] 董华林,石国弘,张德南.液氨泵轴抱死原因分析及改造[J].中氮肥,2018(1):18-20.
[11] API 682 Pumps-shaft sealing systems for centrifugal and rotary pumps[S].
[12] 关醒凡.现代泵技术手册[M].北京:宇航出版社,1995.
[13] 牟介刚,汪慧,苏苗印,等.叶轮背叶片外径对平衡轴向力性能影响的研究与探讨[J].中国农机化学报,2012(3):66-69.
[2] 周岭,施卫东,陆伟刚,等.深井离心泵轴向力数值预测与试验[J].农业机械学报,2012,43(7):100-103.
[3] 李伟,施卫东,蒋小平,等.多级离心泵轴向力的数值计算与试验研究[J].农业工程学报,2012,28(23):52-59.
[4] 孔繁余,高翠兰,张旭峰,等.PBN65-40-250型屏蔽泵轴向力平衡计算及其试验[J].农业工程学报,2009,25(5):68-72.
[5] 李伟,施卫东,蒋小平,等.屏蔽泵轴向力平衡新方法[J].农业工程学报,2012,28(7):86-90.
[6] 陆伟刚,张金凤,袁寿其.离心泵叶轮轴向力自动平衡新方法[J].中国机械工程,2007,18(17):2037-2040.
[7] 安芝贤,任振林.高压磁力驱动多级离心泵轴向力研究[J].甘肃科学学报,2003,15(2):94-98.
[8] 高红俐,杨继隆,叶力,等.分段式多级离心泵的轴向力计算[J].水泵技术,2000(2):8-12.
[9] 陆伟刚,李启锋,施卫东,等.减小叶轮后盖板直径的轴向力试验[J].排灌机械工程学报,2008,26(1):1-5.
[10] 董华林,石国弘,张德南.液氨泵轴抱死原因分析及改造[J].中氮肥,2018(1):18-20.
[11] API 682 Pumps-shaft sealing systems for centrifugal and rotary pumps[S].
[12] 关醒凡.现代泵技术手册[M].北京:宇航出版社,1995.
[13] 牟介刚,汪慧,苏苗印,等.叶轮背叶片外径对平衡轴向力性能影响的研究与探讨[J].中国农机化学报,2012(3):66-69.