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城市供水管网在运行一段时间后,铸铁管会出现锈蚀的问题,这会减小管道过水断面面积和增加管道摩阻系数,从而提高了供水能耗。环氧树脂喷涂改造是一种新型的管道修复方法,依托北京某小区供水管网喷涂改造修复工程,研究了喷涂前后管网监测点压力值的变化情况,结果表明喷涂改造后管网监测点压力值都有所上升。
After running for some time in urban water supply pipe network, the cast iron pipe will have corrosion problems, which will reduce the cross-sectional area of the pipe and increase the friction coefficient of the pipe, thereby increasing the water consumption. Epoxy resin spray coating is a new type of pipeline repair method. Based on the renovation project of spray spraying in a district water supply network in Beijing, the pressure changes of the monitoring points before and after spraying are studied. The results show that the monitoring points pressure Values have risen.