The change of hydraulic moment on blades is closely related with pumpcharacteristics, which should arouse the attention of pump designers.
叶片水力矩的变化与泵性能参数的变化密切相关，应引起泵设计人员的充分重视。
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Analyses the influence of pumpcharacteristics and pipeline characteristics on flow increment in parallel, and points out that insufficient flow increment could cause pumps to overload.
Aimed at pump system, this article investigates the transient characteristics and the influencing factors of the whole system by means of experiment and numerical calculation.