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热水采暖锅炉为季节性运行设备.在停运期间,外界管网系统在排水后,吸收空气中的水分而形成水膜,水膜中的氧与铁起化学反应,生成铁锈,腐蚀管网.到下一个运行期,这些锈斑、杂质会随着循环水流进入锅炉本体及某些管束.当热水锅炉的水循环不良,水流速过低时,在热强度较高的某些管束中,因局部汽化会产生硬度很高的沉淀物,以至堵塞管道.
During the shutdown period, the external pipe network system drains the moisture in the air and forms a water film after the water is discharged from the pipe system. The oxygen and iron in the water film react chemically to form rust and corrode the pipe network In the next run, these rusts and impurities will flow into the boiler body and some tube bundles with the circulating water.When the water circulation in the hot water boiler is poor and the water flow rate is too low, in some tube bundles with higher heat intensity, Local vaporization can result in deposits of high hardness, clogging pipes.