随着城市供水管网的更新、改造和扩建，某些城市的管网压力分布不均问题日益突出，即当输配水管线较长时，在管网中产生较大的沿程水头损失，为了维持管网末梢服务压力，势必提高水厂的出厂压力，以至在管网前端服务压力过高，造成区域之间的水压差过大，在高压区供水能量浪费 With the renewal, transformation and expansion of urban water supply pipe networks, the problem of uneven distribution of pipe network pressure in some cities has become increasingly prominent. That is, when the transmission and distribution pipelines are long, there is a large head loss in the pipeline network. In order to maintain the pressure of service at the end of the pipeline network, it is bound to increase the factory pressure of the water plant, and even the pressure at the front end of the pipeline network is too high, resulting in excessive water pressure difference between regions and waste of water supply energy in the high pressure area.