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.
马新华，李 浩，施卫东，邵 鑫. 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 Xinhua, Li Hao, Shi Weidong， Shao Xin. Transition process of pump device model test in closed test-bed. Journal of Drainage and Irrigation Machinery Engin, 2011, 29(5): 392-396.
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