Pressure Changes Evaluation for Valve Replacement Condition Based on a Micro-Scope Hydraulic Model

The pressure change of whole water supply system is studied in this paper. Some areas are isolated by closing isolation valves. The schemes of valve shutdown are made based on the valve arrangement principles and the methods of the valve closing. The whole water supply system is divided into 8457 segments, of which two segments are closed to prevent the water entering the area. Therefore, the valve can be replaced in that two areas. The micro-scope hydraulic model is closest to the real water supply system is used to simulate the pressure changes. The color coding is used to show the pressure of the whole water supply system. The simulation in different water consumption conditions is also conducted.