%A CAO Wei-dong, ZHU Rong-sheng, SHI Wei-dong, PAN Wei-dong %T A Simple System of Pump Units Used for Isobaric Water Supplying %0 Journal Article %D 2001 %J Journal of Drainage and Irrigation Machinery Engin %R 10.3969/j.issn.1674-8530.2001.06.011 %P 31-32 %V 19 %N 6 %U {http://zzs.ujs.edu.cn/pgjx/CN/abstract/article_856.shtml} %8 2001-11-25 %X A parallel connection system of pump units pipeline system and working principle are presented.The working logic relation of each section has been analyzed with the changing of outer water supply. Some questionscan be solved by this system, for example, pumps racing when the pressure of inlet is negative, pumps erodingwhen the rotating parts was stationary if the pressure of inlet is positive.