【摘要】 提供了城市供水水泵的变压变流量自动控制方法，成功地解决了水源地和地区加压站昼夜之间水流量和水压变化大、难以控制的问题。实现了按需供应的最佳供水方式，大幅度地降低了耗电量，节约了水源，减轻了城市自来水管道的压力。同时也为油泵供油、风机送风等提供了一种可借鉴的控制方法。更多还原

【Abstract】 This peper introduces the new method about variable pressure and variable current control of water pump in the process of cities water supply. This scheme overcomes successfully the control problem that current and presure is varied largely in the process of cities water supply during day and night, realized the best water supply manner acording to need. Power consumption is largely reduced,saving energy marked and the presure of water pipes is weakened.更多还原