一、水泵变速运行的优点水泵变速运行的主要优点是节能。为调节水泵送水量,目前国内普遍采用节流阀。即调节出水阀门开启度,改变管路系统的水力损失,从而改变水泵的工况点来调节流量。也有的水泵出水阀门全开,由用户根据需要的流量自行调节。这些分散用户的阀门 First, the advantages of the pump to run at a variable speed The main advantage of the variable speed operation of the pump is energy saving. In order to regulate the amount of water delivered by pumps, throttle valves are commonly used at home. That is, adjusting the opening degree of the water outlet valve, changing the hydraulic loss of the pipeline system, thereby changing the operating point of the pump to adjust the flow. Some water pump outlet valves are fully open and are adjusted by the user according to the required flow. These dispersed users’ valves