6SL31201TE130AB0

6SL31201TE130AB0

6SL31201TE130AB0

该类型设备在实际应用中较多，系统由水泵组、循环软启动变频柜、压力仪表、管路系统等构成。变频柜由变频调速器，恒压供水控制器，低压电器等组成。系统一般选择同型号水泵2-3台，以3台泵为例，系统的工作情况如下：

《联系人；欧先生》
《座机：0592-5709825》
《传真：0592-5917519》
《24小时热线：18030229053微信同步》
《QQ  ：2479261344》
《QQ邮箱：2479261344@qq》

平时1台泵变频供水，当1台泵供水不足时，先开的泵切换为工频运行，变频柜再软启动第2台泵，若流量还不够，第2台泵切换为工频运行，变频柜再软启动第3台泵，若用水量减少，按启泵顺序依次停止工频泵，直到 1台泵变频恒压供水。

另外系统具有定时换泵功能，若某台泵连续运行超过24h变频柜可自动停止该泵切换到下一台泵继续变频运行。换泵时间由程序设定，可按要求随时调整。这样可均衡各泵的运行时间，延长整体泵组的寿命，防止个别水泵长时间不工作而锈死。

当变频供水系统在小流量或零流量的情况下，比如在夜间用水低谷时，系统内的用水量很小，此时水泵在低流量下运行，会造成水泵效率大大降低，不能达到节能的目的，水泵功率越大用电越多。例如对300-1000户的多层住宅小区或600户左右的小高层住宅楼群（12层以内）的生活用水系统，生活主泵功率一般在15KW左右，系统的零流量频率P0一般为25.00—35.00Hz故在夜间小流量时，采用主泵变频供水效率降低。

这就涉及供水系统在小流量时的节电问题，一般可以采取4种方案：a变频主泵+工频辅泵；b变频主泵+工频辅泵+气压罐；d变频主泵+变频辅泵。从技能投资角度看第4中方案更为适宜，该方案即在原变频主泵基础上，再配备1-2台小泵专用在夜间或平时小流量时变频供水，一般选择小泵流量为3-6 m³/h，居民区户数越多，流量可适当选择大些，小泵功率一般为1.5-3kw，小泵的扬程按主泵或略低扬程即可。

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