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近年来民用住宅发展很快,而且正在向较高楼层发展。上水管路水压在夏季仅能满足二、三层楼房用水,所以设计中一般采用自备水箱集中供水。在水箱水位自动控制中,由于北方寒冷地区现有的水位检测系统(如浮球式、变换阻值式等)已不适应冬季供水控制情况(因水箱房无采暖)。当室外达一30°C以上时往往出现水箱无水不启泵或水
In recent years, residential houses have developed rapidly and are evolving to higher floors. The water pressure of the Sheung Shui pipeline can only meet the water consumption of the second- and third-floor buildings in the summer, so the centralized water supply from self-provided water tanks is generally used in the design. In the automatic control of water level in tanks, the existing water level detection systems (such as float ball, switch resistance, etc.) in northern cold regions are no longer adapted to the winter water supply control situation (because the water tank houses have no heating). When the outdoor reaches a temperature of more than 30 °C, water tanks do not start pump or water