排灌机械工程学报
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排灌机械工程学报  2011, Vol. 29 Issue (5): 392-396    DOI: 10.3969/j.issn.1674—8530.2011.05.005
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闭式试验台水泵装置模型试验过渡过程
马新华,李  浩,施卫东,邵  鑫
(江苏大学流体机械工程技术研究中心, 江苏  镇江 212013)
Transition process of pump device model test in closed test-bed
Ma Xinhua, Li Hao, Shi Weidong, Shao Xin
(江苏大学流体机械工程技术研究中心, 江苏  镇江 212013)
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摘要 为研究闭式试验台试验过程中水泵装置模型各参数的变化规律和特征,采用物理模拟试验的方法,在水泵立式试验台上对某泵站模型泵进行性能试验.通过在稳定转速的条件下逐步减小流量,同时采集装置进出口前后即试验台上下游处的平均压力以及水泵运行时其他工况各参数,分析了试验过程中水泵装置模型的进出口前后的压力及其轴功率变化过程,探讨了试验系统在向稳定工况过渡过程中,水泵及系统内部各工况的变化情况.试验结果表明:在整个过渡过程中,水泵进口前的压力波动不大,相对稳定;出口后的压力在初阶段呈上升趋势波动,波动幅度较大,经过一段时间后,也趋于相对稳定;轴功率的变化与出口后的压力波动类似,初始阶段波动较大,但变化明显,随着时间的延续,逐渐趋于稳定;过渡过程持续时间大于90 s.
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马新华
施卫东
关键词水泵装置模型   过渡过程   闭式试验台   进出口压力   轴功率     
Abstract: In order to study the characteristics of the pump test-bed and pump working conditions, physical simulation experiment method was used to do the experiment of a model pump used in some pump station on a vertical closed pump test-bed. The averaged pressure before the inlet and after the outlet of the pump,as well as the averaged pressure in upstream and downstream of the pump test-bed, and pump working conditions parameters were collected with gradually reducing the flow under constant rotating speed. The change characters of pump pressure before the inlet and after the outlet as well as shaft power were analyzed, and the internal changes of both the pump device model and test system during the transition to be stable were discussed. The test results show that during the transition process, the inlet pressure fluctuation of the pump is subtle and can always be in relatively stable state. The outlet pressure in the initial stage shows ascendant trend fluctuations, and the fluctuations are intensive. But after a while, tends are relatively stable. The shaft power changes are similar to the pressure fluctuations after outlet. In the initial stage, changes are obvious, but the fluctuations gradually become stable. This period of the process has continued for more than 90 s.
Key wordspump device model   transition process   closed test-bed   inlet and outlet pressure   shaft power   
收稿日期: 2010-10-18; 出版日期: 2011-09-30
基金资助:

“十一五”国家科技支撑计划项目( 2008BAF34B15)

通讯作者: 马新华( 1956-),男,江苏金坛人,副研究员(mxh@ujs.edu.cn),主要从事流体机械的理论、设计方法和试验研究.   
作者简介: 李 浩( 1987-),男,河南新乡人,硕士研究生( lee_lh305@163.com),主要从事流体机械自动测控研究
引用本文:   
马新华,李,浩等. 闭式试验台水泵装置模型试验过渡过程[J]. 排灌机械工程学报, 2011, 29(5): 392-396.
MA Xin-Hua,LI ,HAO et al. Transition process of pump device model test in closed test-bed[J]. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(5): 392-396.
 
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