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在水泵出水管上不装逆水阀,可以减少阻力损失,从而节省电费,同时也可防止停泵时水锤的发生。 1.怀化水厂由湖南省建筑设计院设计,泵站内水泵压力为7.0公斤/厘米~2,水泵出水管上不装逆止阀。测定了水泵因事故停泵时的逆转速为额定转速的80～90％,轴承未见损坏,叶轮也未松动。省设计院在衡阳、邵阳都设计有水泵出水管上不装逆止阀的泵站。
Do not install the backwater valve on the water pump outlet pipe, which can reduce the resistance loss, thus saving electricity costs, but also prevent the occurrence of water hammer when the pump is stopped. 1. Huaihua Water Plant is designed by the Hunan Provincial Institute of Architectural Design. The pump pressure in the pump station is 7.0 kg/cm2, and no check valve is installed on the water pump outlet pipe. The reverse rotation speed of the pump when the pump was stopped due to an accident was determined to be 80 to 90% of the rated rotation speed, the bearing was not damaged, and the impeller was not loosened. Provincial Design Institute in Hengyang, Shaoyang are designed with pump outlet pipe is not equipped with check valve pump station.