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每种型号水泵的运行扬程范围都是有限的,一般情况下水泵配套电动机转速一定,水泵输出流量会随扬程的变化而相应反向变化,若扬程变幅所占扬程本身大小的比例不大,不影响水泵稳定运行,反之则不能稳定运行,且达不到预计供水效果。当提水泵站扬程变幅较大时,应考虑使用水泵配套电机变频运行或分组选泵的措施。文章以丹寨吊洞水库工程一级泵站为例,对扬程变幅较大的泵站水泵机组选型进行论述。
Each type of pump running head range is limited, under normal circumstances supporting the pump speed of a certain motor, the pump output flow will be the corresponding change in head and reverse changes, if the lift head lift accounted for the proportion of their size is not large, Does not affect the stable operation of the pump, otherwise it can not be stable operation, and reach the expected water supply effect. When pumping pumping station head larger amplitude, should consider the use of pumps supporting motor variable frequency operation or pump grouping measures. In this paper, a case of Danzhai hanging hole Reservoir Engineering Pumping Station is taken as an example to discuss pump type selection of pump station with large lift.