无负压供水设备应用，是现代水网当中不可忽视的重要部分。无负压供水设备原理应(ying)用(yong)(yong)，是以管网(wang)水(shui)(shui)(shui)压(ya)(或(huo)用(yong)(yong)户(hu)用(yong)(yong)水(shui)(shui)(shui)流量)为设(she)定参数，通过微机控制(zhi)变(bian)频器(qi)的(de)(de)输(shu)出频率从而自动调(diao)节水(shui)(shui)(shui)泵(beng)电(dian)机的(de)(de)转(zhuan)速(su)，实现管网(wang)水(shui)(shui)(shui)压(ya)的(de)(de)闭环调(diao)节(PID)，使供(gong)(gong)(gong)水(shui)(shui)(shui)系(xi)统自动恒稳(wen)于设(she)定的(de)(de)压(ya)力值：即用(yong)(yong)水(shui)(shui)(shui)量增加时，频率升(sheng)高，水(shui)(shui)(shui)泵(beng)转(zhuan)速(su)加快(kuai)，供(gong)(gong)(gong)水(shui)(shui)(shui)量相应(ying)增加;用(yong)(yong)水(shui)(shui)(shui)量减(jian)少时，频率降低，水(shui)(shui)(shui)泵(beng)转(zhuan)速(su)减(jian)慢，供(gong)(gong)(gong)水(shui)(shui)(shui)量亦相应(ying)减(jian)小，这样就保证了供(gong)(gong)(gong)水(shui)(shui)(shui)效率用(yong)(yong)户(hu)对水(shui)(shui)(shui)压(ya)和水(shui)(shui)(shui)量的(de)(de)要求，同时达(da)到(dao)了提高供(gong)(gong)(gong)水(shui)(shui)(shui)品质和供(gong)(gong)(gong)水(shui)(shui)(shui)效率的(de)(de)目(mu)的(de)(de)，“用(yong)(yong)多少水(shui)(shui)(shui)，供(gong)(gong)(gong)多少水(shui)(shui)(shui)”;采用(yong)(yong)该设(she)备(bei)不需建造高位水(shui)(shui)(shui)箱，水(shui)(shui)(shui)塔，水(shui)(shui)(shui)质无二次污染，是一种理想的(de)(de)现代化建筑(zhu)供(gong)(gong)(gong)水(shui)(shui)(shui)设(she)备(bei)。

　　使用无负压(ya)(ya)供(gong)水设备实现恒压(ya)(ya)供(gong)水，与用调(diao)节(jie)阀(fa)门(men)来实现恒压(ya)(ya)供(gong)水相比，节(jie)能效果十(shi)分显著。

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