The paper calculates the hydraulic transition in drainage system of single-suck convective super-lift submersible pump by characteristic line method,and offers reliable technical information for emergency drainage design of deep mine.
采用特征线法计算不同阀门关闭规律与不同排水管径情况下单吸对旋超高扬程潜水泵排水系统的水力过渡过程,为深井抢险排水设计提供了可靠的技术数据。
The technology development of efficiency and net positive suction(NPSH) performance indexes about single-stage and single-suction rinsing centrifugal pump are investigated in this paper, in which a great deal of measuring or national standard value and sample value of two performance indexes about vertical and horizontal pump are collected and compared.
论文通过对单级单吸清水离心泵的性能指标进行行业调查,在收集大量数据的基础上,将效率、汽蚀余量性能指标的实测值与国家标准规定值及样本数值进行比较,对立式结构、卧式结构分别进行统计、整理,详细地介绍了国内单级单吸清水离心泵的技术水平现状,指出了样本数据普遍与实测数据不一致、低比转速的性能指标技术水平相对好一些及立式结构的效率性能指标偏低,并对整理结果进行详细技术分析。
In this paper,the elastic property of the single sucking disc for the wallclimbing robot analyzed.
系统地讨论了单吸盘真空吸附式爬壁机器人吸盘系的弹性性能，从气体流变过程的角度，推导出气囊式密封垫弹性刚度理论计算公式。
With object function of minimized NPSH,the inlet design factors were analyzed both for single suction and double suction impellers.
离心叶轮设计系数的选用决定了叶轮设计的优劣,以汽蚀余量最小为目标函数对单吸式和双吸式离心叶轮的进口设计系数进行了分析,结果表明,单吸式和双吸式叶轮的进口条件不同,相应得到的进口设计系数选用曲线也不同。
