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某居民楼顶有一水箱向全楼用户供水,早晚高峰时用水量大,其余时间用水量不确定。用户负载由一出水阀代替,水箱进水由一台进水泵负责。现系统存在问题如下:如果水泵一直工作,则用水量减少时会导致水箱水位过高甚至溢出,而且也不利于节能减排;如果水泵由定时开关控制,在传统的早晚用水高峰时定时工作,则在用水非高峰时段突发地水量需求增大时,系统无法提供足够的水压,降低用户用水体验满意度。基于以上原因,本文对水罐水位进行恒定控制,使得水箱水位可以在0到10米范围内进行控制,水箱的液位高度用水压变送器间接算出。系统既可以调节水位高度,又可以使水位稳定在指定高度范围内。
A resident of the roof has a water tank to the entire floor of users of water, morning and evening peak water consumption, water consumption for the rest of the time uncertain. User load replaced by a valve, the water tank by a water pump is responsible. Now the system problems are as follows: If the pump has been working, the water consumption will lead to the water tank is too high or even overflow, but also not conducive to energy saving; if the pump is controlled by the timer switch, regular morning and evening peak hours of regular work, The system can not provide enough water pressure to reduce the satisfaction of the user’s water experience when the demand of water suddenly increases during the non-peak period of water use. Based on the above reasons, this paper has a constant control of the tank water level, so that the tank water level can be controlled within the range of 0 to 10 meters, the water tank height is indirectly calculated using a hydraulic pressure transmitter. The system can adjust the water level, but also can make the water level stable within the specified height range.