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電子無負壓供水係統裝置工作原理
電子無負壓供水裝置直接串接在自來水供水管上 ，在水泵進水端和出水端分別安裝壓力傳感器 ，采集實時壓力變化信號並送入中心控製單元 。其虛擬浮堰單元 、模糊控製單元 、自動跟隨單元 、壓力PID控製單元 ，經控製中心協調運算控製水泵組自動運行 。
電子虛擬浮堰可在進水管道中形成一道虛擬浮堰 ，其作用與真實浮堰相同 ，其浮堰高度可通過控製麵板靈活設定，實際運行時控製前端進水目標壓力始終不低於電子浮堰設定值 ，這就確保了前端自來水管網周邊用戶不受負壓影響 ，供水裝置隻對越過電子浮堰的水量進行在線疊壓 ，充分利用了自來水管網原有壓力 ，最大幅度的節約了電能 ，當自來水管網因故障產生來水壓力及來水量不足時 ，越過電子浮堰的水量繼續被係統加壓輸出 ，以保證供水的連續性 。當越過浮堰的水量為零時 ，設備自動停止運轉 。當自來水管網恢複正常隻要有越過浮堰的水量出現 ，設備會自動運行加壓 。
由於電子無負壓供水裝置直接串接在自來水供水管上 ，省去了傳統的水箱 ，從根本上避免了水與大氣接觸而形成的二次汙染 。
電子無負壓產品優點
1 、 占地麵積小 。
2 、 涉水部件少 、麵積小 ，電子傳感部件不受水垢雜質影響 。
3 、 防負壓過程可根據來水量同步加壓 ，來多少加多少 ，隻有流量為零時才停機 。
4 、 有效保護自來水管網壓力不受負壓影響 ，且設定調整靈活方便 。
5 、 管路串聯 ，充分利用了自來水進水壓力 ，設備運行效率高 。
6 、 設備完全密閉與大氣隔絕 ，確保水質不受汙染 。
Working principle of electrical water supplying system device without negative pressure
The device is directly connected to the tap water supplying pipes with a concatenation, and pressure sensors will be mounted respectively at the water in-let and out-let ends to collect real time pressure alterative signal and send to the central control unit. Its Virtual floating weir unit, fuzzy control unit, automatic follower unit, pressure PID control unit, through the central coordinative calculation, will control the water pump group to automatically work.
Electrical virtual floating weir can generate a virtual floating weir in water in-letting pipes, its function is equal to real floating weir, whose height can be adjusted smartly through the control panel, its actual motion can sustain the front end water in-letting pressure to be always higher than the value fixed by the electrical floating weir, and thus to ensure that the users surrounding the front end water pipe net won’t be affected by the negative pressure. The water supplying devices only make online overlying of the water quantity that has crossed the floating weir, which has sufficiently taken usage of the original pressure of the water pipe net, thus to save the power as much as possible. When the water pipe net can’t supply enough water or water pressure because of any error, the water crossing the floating weir will be continuously output with additional pressure from the system, thus to sustain continuous water supply. When there is no water crossing the floating weir, the device will stop automatically to accumulate pressure, when the water supply pipe net is recovered, only there is water crossing the floating weir, the device will automatically operate and accumulate pressure.
Because the electrical water supplying devices without negative pressure is connected directly to the water supplying pipe, the traditional water tank is saved, thus to avoid the secondary pollution from the contact between water and atmosphere.
Advantage of electrical products without negative pressure:
1 、Small area taken.
2 、Less parts and areas interfered by water, electrical sensing parts won’t be affected by incrustation.
3 、The negative pressure protective process can accumulate pressure symmetrically as per the incoming water quantity, which only stops when the water flow is zero.
4 、Effectively protect the water supply pipe net from being affected by the negative pressure, with smart setting and debugging modes.
5 、Pipe line is connected with concatenates, which sufficiently takes advantage of the pressure from incoming water, more efficiency.
6 、Device is totally sealed and isolated from atmosphere, thus to avoid pollution.
