摘要
针对高压多级离心泵日常运行过程中,在入口压力(装置汽蚀余量)足够的情况下,泵仍然出现汽蚀现象,引起一定的噪声和振动,严重时轴甚至抱死无法运行。同时在泵维修时经常发现导叶、蜗壳、口环表面等部位出现不同程度的汽蚀破坏现象。本文首先对间隙内产生汽蚀现象的原因及对泵部件的影响进行了初步分析,然后采用CFD计算模拟了间隙内汽蚀产生过程,最后提出了改善间隙汽蚀的解决措施,对高压多级离心泵长周期安全稳定运行具有重要意义。
During the daily operation of the high-pressure multistage centrifugal pump,under the condition of sufficient inlet pressure(cavitation allowance of the device),cavitation still occurs in the pump,which causes some noise and vibration,in severe cases,the shaft is even locked and cannot rotate.When repairing the pump,it is often found that the surface of guide vane,volute and wear ring and other area have different degrees of cavitation damage.The cause of cavitation in the clearance and the effect on the pump components are preliminarily analyzed first,then CFD computation software is used to simulate the cavitation generation process in the clearance,and finally the solutions to improve the clearance cavitation are proposed.It is of great significance for long-term safe and stable operation of multistage centrifugal pump.
作者
成科
岳维亮
胡四兵
杜振明
王振伟
CHENG Ke;YUE Weiliang;HU Sibing;DU Zhenming;WANG Zhenwei(Sinopec Luoyang Company,Luoyang 471012,China;Dalian Leo Huaneng Pump Co.,Ltd.,Dalian 116000,China;Hefei General Machinery Research Institute Co.,Ltd,Hefei 230031,China)
出处
《流体机械》
CSCD
北大核心
2021年第5期74-79,共6页
Fluid Machinery
基金
安徽省科技重大专项(18030901026)
国机集团重大科技专项(SINOMAST-ZDZX-2017-01-04,SINOMAST-ZDZX-2018-01-04)。
关键词
间隙
汽蚀
高压多级离心泵
稳定性
clearance
cavitation
high pressure multistage centrifugal pump
stability
