變頻器多泵疊(die)壓給(gei)水設備恒(heng)壓供水應用及電機切(qie)換(huan)問題

1 引言 

      在(zai)(zai)變頻技術應(ying)用還未廣泛的時期,區域疊壓(ya)(ya)給水(shui)(shui)設備供水(shui)(shui)系統都是(shi)經(jing)由市政管(guan)網(wang)經(jing)過二次加(jia)壓(ya)(ya)和(he)高位(wei)水(shui)(shui)塔(ta)儲水(shui)(shui)池(chi)來滿足用戶(hu)對供水(shui)(shui)壓(ya)(ya)力的要求。日常(chang)供水(shui)(shui)控(kong)制通常(chang)采用水(shui)(shui)泵(beng)恒速運行加(jia)上調整出口閥開度(du)的方(fang)式(shi)調節(jie)(jie)供水(shui)(shui)的水(shui)(shui)量水(shui)(shui)壓(ya)(ya)。而由水(shui)(shui)泵(beng)的揚(yang)程特(te)性圖(tu)及管(guan)阻特(te)性圖(tu)可知這(zhe)種靠調節(jie)(jie)輸出閥門(men)來進行恒壓(ya)(ya)供水(shui)(shui)的方(fang)式(shi)使得大(da)量能(neng)量消耗在(zai)(zai)出口閥門(men)而造成浪費,而且存(cun)在(zai)(zai)水(shui)(shui)池(chi)的二次污染(ran)問題。 

2 疊壓給(gei)水設(she)備恒壓供水原理 

2.1 供水原理(li) 

      變(bian)(bian)(bian)頻(pin)技術(shu)通過調速(su)(su)節(jie)約(yue)(yue)了(le)在(zai)(zai)(zai)改(gai)(gai)變(bian)(bian)(bian)閥(fa)(fa)門(men)(men)開度(du)上(shang)(shang)造成的(de)(de)能(neng)量(liang)(liang)(liang)浪費,并(bing)且(qie)由于(yu)取(qu)消水(shui)(shui)塔而(er)從(cong)原理上(shang)(shang)解決二次污染(ran)問題。閥(fa)(fa)門(men)(men)控制(zhi)法(fa)的(de)(de)本質是水(shui)(shui)泵(beng)本身的(de)(de)供(gong)水(shui)(shui)能(neng)力不(bu)(bu)(bu)變(bian)(bian)(bian),通過改(gai)(gai)變(bian)(bian)(bian)水(shui)(shui)路中(zhong)的(de)(de)管阻(zu)大小來改(gai)(gai)變(bian)(bian)(bian)流量(liang)(liang)(liang),以適(shi)應(ying)用(yong)(yong)(yong)戶(hu)對流量(liang)(liang)(liang)的(de)(de)需(xu)求。而(er)轉速(su)(su)特(te)性(xing)是在(zai)(zai)(zai)閥(fa)(fa)門(men)(men)開度(du)不(bu)(bu)(bu)變(bian)(bian)(bian)的(de)(de)情況(kuang)下,通過調節(jie)轉速(su)(su)來達到(dao)用(yong)(yong)(yong)戶(hu)要求的(de)(de)水(shui)(shui)量(liang)(liang)(liang)。我(wo)們知道流量(liang)(liang)(liang)與揚程的(de)(de)乘積(ji)(ji)近(jin)似(si)為供(gong)水(shui)(shui)功(gong)(gong)率,如圖1水(shui)(shui)泵(beng)的(de)(de)揚程特(te)性(xing)及管阻(zu)特(te)性(xing)圖所(suo)示(shi),假定現在(zai)(zai)(zai)用(yong)(yong)(yong)戶(hu)用(yong)(yong)(yong)水(shui)(shui)量(liang)(liang)(liang)穩定在(zai)(zai)(zai)E點,我(wo)們可(ke)以看到(dao)在(zai)(zai)(zai)閥(fa)(fa)門(men)(men)開度(du)不(bu)(bu)(bu)變(bian)(bian)(bian)的(de)(de)情況(kuang)下單純(chun)(chun)調節(jie)轉速(su)(su)所(suo)需(xu)要的(de)(de)供(gong)水(shui)(shui)功(gong)(gong)率(面(mian)積(ji)(ji)OECD)小于(yu)轉速(su)(su)不(bu)(bu)(bu)變(bian)(bian)(bian)而(er)單純(chun)(chun)調節(jie)閥(fa)(fa)門(men)(men)所(suo)需(xu)的(de)(de)供(gong)水(shui)(shui)功(gong)(gong)率(面(mian)積(ji)(ji)ABOE),所(suo)以說變(bian)(bian)(bian)頻(pin)技術(shu)節(jie)約(yue)(yue)了(le)能(neng)量(liang)(liang)(liang),并(bing)且(qie)解決了(le)二次污染(ran)問題。(如圖1所(suo)示(shi),面(mian)積(ji)(ji)ABCD即為節(jie)約(yue)(yue)的(de)(de)能(neng)量(liang)(liang)(liang))。 

      現有的變頻(pin)水泵疊(die)壓給水(shui)設備恒壓供水(shui)方式基(ji)于PID控制(zhi)原理,簡單概括就是:維持管(guan)路(lu)供水(shui)壓(ya)力(li)的(de)恒(heng)定。當用(yong)戶(hu)用(yong)水(shui)量加(jia)(jia)大(da)時(shi),管(guan)路(lu)壓(ya)力(li)減(jian)小(xiao)(xiao),變頻器轉速(su)要提(ti)高以增加(jia)(jia)流量補充(chong)壓(ya)力(li)。反(fan)之,用(yong)戶(hu)用(yong)水(shui)量減(jian)小(xiao)(xiao)時(shi),管(guan)路(lu)壓(ya)力(li)增大(da),變頻器轉速(su)要降低,使流量適(shi)當降低以使壓(ya)力(li)恒(heng)定。 

2.2 多泵供水 

      疊壓(ya)給水(shui)(shui)設備多(duo)泵(beng)(beng)(beng)供(gong)(gong)水(shui)(shui)是較常(chang)見(jian)的變(bian)(bian)頻(pin)(pin)(pin)供(gong)(gong)水(shui)(shui)方案。多(duo)泵(beng)(beng)(beng)建筑(zhu)供(gong)(gong)水(shui)(shui)系統(tong)普遍(bian)采用(yong)(yong)變(bian)(bian)頻(pin)(pin)(pin)器(qi)循環控(kong)制方式。多(duo)泵(beng)(beng)(beng)控(kong)制思(si)路是一(yi)拖多(duo)工(gong)(gong)變(bian)(bian)頻(pin)(pin)(pin)結合復合式變(bian)(bian)流(liu)量(liang)(liang)(liang)(liang)變(bian)(bian)頻(pin)(pin)(pin)供(gong)(gong)水(shui)(shui)。在小(xiao)流(liu)量(liang)(liang)(liang)(liang)用(yong)(yong)水(shui)(shui)時(shi)工(gong)(gong)況，變(bian)(bian)頻(pin)(pin)(pin)器(qi)帶(dai)一(yi)臺(tai)(tai)水(shui)(shui)泵(beng)(beng)(beng)運行(xing),隨用(yong)(yong)水(shui)(shui)量(liang)(liang)(liang)(liang)的變(bian)(bian)化,調整(zheng)水(shui)(shui)泵(beng)(beng)(beng)的轉(zhuan)速(su),實現(xian)恒壓(ya)供(gong)(gong)水(shui)(shui)；當(dang)用(yong)(yong)水(shui)(shui)量(liang)(liang)(liang)(liang)增(zeng)大(da)(da),變(bian)(bian)頻(pin)(pin)(pin)器(qi)達到50HZ時(shi),變(bian)(bian)頻(pin)(pin)(pin)器(qi)發出(chu)指令,使(shi)該變(bian)(bian)頻(pin)(pin)(pin)泵(beng)(beng)(beng)切換到工(gong)(gong)頻(pin)(pin)(pin),同時(shi)使(shi)變(bian)(bian)頻(pin)(pin)(pin)器(qi)帶(dai)動下一(yi)臺(tai)(tai)水(shui)(shui)泵(beng)(beng)(beng)變(bian)(bian)頻(pin)(pin)(pin)軟啟動運行(xing)。隨用(yong)(yong)水(shui)(shui)流(liu)量(liang)(liang)(liang)(liang)增(zeng)大(da)(da),以后各臺(tai)(tai)水(shui)(shui)泵(beng)(beng)(beng)的軟啟動依次類推。當(dang)用(yong)(yong)水(shui)(shui)量(liang)(liang)(liang)(liang)減(jian)小(xiao)時(shi),先(xian)停轉(zhuan)為工(gong)(gong)頻(pin)(pin)(pin)運行(xing)的那臺(tai)(tai)水(shui)(shui)泵(beng)(beng)(beng)。系統(tong)主電(dian)路如圖1所示。有一(yi)點需要說明,由于水(shui)(shui)泵(beng)(beng)(beng)在工(gong)(gong)頻(pin)(pin)(pin)運行(xing)時(shi),變(bian)(bian)頻(pin)(pin)(pin)器(qi)不(bu)可能對電(dian)機進行(xing)過載保(bao)護,所以 須(xu)接入(ru)熱繼電(dian)器(qi)FR,用(yong)(yong)于工(gong)(gong)頻(pin)(pin)(pin)運行(xing)時(shi)的過載保(bao)護。 

      我們(men)以臺達變(bian)頻器(qi)(qi)VFD-F系列為例,其輸(shu)入,輸(shu)出端子(zi)外(wai)部接線見(jian)圖(tu)(tu)(tu)2,RA1至(zhi)RA8為多功能繼(ji)電器(qi)(qi)輸(shu)出端子(zi),其中RA3至(zhi)RA8為選件RY00所提(ti)供。為便于理解，把圖(tu)(tu)(tu)1控制電路圖(tu)(tu)(tu)進行(xing)簡化,簡化后的(de)(de)(de)圖(tu)(tu)(tu)省略了斷路器(qi)(qi),熱(re)繼(ji)電器(qi)(qi)。在這之前我們(men)要先注意到(dao)由(you)于在變(bian)頻器(qi)(qi)的(de)(de)(de)輸(shu)出端是(shi)不(bu)允(yun)許與電源相連(lian)接的(de)(de)(de),因此接觸器(qi)(qi)KM1和KM2 不(bu)允(yun)許同時接通,相互(hu)之間(jian)(jian) 須(xu)(xu)有非常可(ke)靠(kao)的(de)(de)(de)機(ji)(ji)械互(hu)鎖。經(jing)驗表明,KM1和KM2采用有機(ji)(ji)械互(hu)鎖的(de)(de)(de)接觸器(qi)(qi)是(shi)工程推薦的(de)(de)(de)機(ji)(ji)電復合(he)可(ke)靠(kao)性(xing)設計。同時,電機(ji)(ji)側由(you)KM1切離(li)到(dao)KM2閉合(he)之間(jian)(jian)的(de)(de)(de)延遲時間(jian)(jian)也是(shi)必，，須(xu)(xu)的(de)(de)(de),這可(ke)通過調(diao)節F系列變(bian)頻器(qi)(qi)11-04的(de)(de)(de)時間(jian)(jian)參數(shu)來實現。 

      現(xian)在(zai)根據圖2所(suo)示簡略(lve)描述工變頻(pin)切換過程。假定(ding)現(xian)在(zai)用(yong)戶用(yong)水流量加大,管(guan)道中的(de)壓力(li)減小,1號變頻(pin)泵達到11-06所(suo)設定(ding)的(de)50HZ后(hou)仍未滿足壓力(li)要求(qiu),此時(shi)需要加泵以補(bu)充(chong)管(guan)網(wang)壓力(li),KM1要等到11-05參數所(suo)設定(ding)的(de)延(yan)遲時(shi)間后(hou)當(dang)面板顯示Pu-cH幾(ji)個字母后(hou)(變頻(pin)器(qi) 停(ting)止輸出(chu)以后(hou))斷開,然后(hou)KM2要經過11-04所(suo)設置的(de)延(yan)遲時(shi)間后(hou)閉合,同時(shi)KM3閉合。 

      當用(yong)戶用(yong)水量繼(ji)續(xu)加大,管道中的(de)壓(ya)力(li)(li)(li)再一次下降,需要(yao)再次加泵以補(bu)充管網壓(ya)力(li)(li)(li),頻率達到11-06所設定的(de)參數50HZ后(hou)(hou)仍(reng)未滿足壓(ya)力(li)(li)(li)要(yao)求,KM3要(yao)經(jing)過11-05所設置的(de)延(yan)遲時間后(hou)(hou),當面板顯(xian)示Pu-cH幾個字(zi)母后(hou)(hou)斷(duan)開,然后(hou)(hou)KM4要(yao)經(jing)過11-04所設置的(de)延(yan)遲時間后(hou)(hou)閉(bi)合(he),同時KM5閉(bi)合(he)。 

      當(dang)(dang)(dang)用(yong)戶用(yong)水(shui)(shui)量減小時(shi),管道中(zhong)的(de)(de)(de)壓(ya)力回升,需要減工頻(pin)(pin)(pin)泵,本(ben)著先(xian)(xian)起(qi)先(xian)(xian)停(ting)的(de)(de)(de)原則,1號水(shui)(shui)泵先(xian)(xian)啟動所以一(yi)號水(shui)(shui)泵先(xian)(xian)停(ting),KM2斷開。如果(guo)用(yong)水(shui)(shui)量進一(yi)步減小,再接著停(ting)2號水(shui)(shui)泵,KM4斷開。此(ci)時(shi)只(zhi)有3號水(shui)(shui)泵在變頻(pin)(pin)(pin)運行,如果(guo)用(yong)水(shui)(shui)量再次減小(比如說深夜無人(ren)(ren)或很少人(ren)(ren)用(yong)水(shui)(shui)的(de)(de)(de)情況下(xia)(xia))，輸出頻(pin)(pin)(pin)率(lv)(lv)減小,當(dang)(dang)(dang)變頻(pin)(pin)(pin)器檢(jian)測輸出頻(pin)(pin)(pin)率(lv)(lv)到(dao)參(can)(can)數11-08(休(xiu)眠頻(pin)(pin)(pin)率(lv)(lv))所設定的(de)(de)(de)值后經(jing)過(guo)參(can)(can)數11-07的(de)(de)(de)延遲(chi)時(shi)間,開始進入休(xiu)眠狀(zhuang)態。為(wei)了防止在短時(shi)間內(nei)水(shui)(shui)泵時(shi)起(qi)時(shi)停(ting)的(de)(de)(de)“振(zhen)蕩”現象,需要設置一(yi)個確(que)認(ren)(ren)時(shi)間T,如果(guo)低于(yu)下(xia)(xia)限(xian)頻(pin)(pin)(pin)率(lv)(lv)的(de)(de)(de)時(shi)間小于(yu)T,變頻(pin)(pin)(pin)器可以不必(bi)理會(hui)；只(zhi)有當(dang)(dang)(dang)超過(guo)下(xia)(xia)限(xian)頻(pin)(pin)(pin)率(lv)(lv)的(de)(de)(de)時(shi)間較長(chang),大于(yu)確(que)認(ren)(ren)時(shi)間T的(de)(de)(de)時(shi)候(hou),變頻(pin)(pin)(pin)泵才會(hui)休(xiu)眠。這也就是參(can)(can)數11-07延遲(chi)時(shi)間的(de)(de)(de)意義。 

      當夜間過去后,白天到(dao)來(lai)用(yong)水(shui)(shui)(shui)量開始(shi)(shi)增大(da)(da),此(ci)時間變(bian)頻(pin)(pin)器從休(xiu)眠(mian)狀態喚醒(xing)(3號泵(beng)(beng)開始(shi)(shi)喚醒(xing),喚醒(xing)頻(pin)(pin)率11-09),當用(yong)水(shui)(shui)(shui)量繼續(xu)增大(da)(da),3號泵(beng)(beng)切(qie)為工頻(pin)(pin),1號泵(beng)(beng)切(qie)為變(bian)頻(pin)(pin),用(yong)水(shui)(shui)(shui)量再(zai)加(jia)大(da)(da),2號泵(beng)(beng)切(qie)為變(bian)頻(pin)(pin),3號泵(beng)(beng)切(qie)為工頻(pin)(pin)。以下不再(zai)詳述。整個反復循(xun)環(huan)的過程可(ke)以參(can)見(jian)(表(biao)(biao)1)。我們(men)看到(dao)參(can)數(shu)11-02較(jiao)大(da)(da)設定值為4,也就是說(shuo)較(jiao)多可(ke)以帶四臺水(shui)(shui)(shui)泵(beng)(beng),4臺水(shui)(shui)(shui)泵(beng)(beng)的循(xun)環(huan)過程也用(yong)表(biao)(biao)列了出來(lai),可(ke)以參(can)見(jian)(表(biao)(biao)2)。 

3 疊壓給水設(she)備多泵變(bian)頻(pin)供水的電(dian)機切換 

3.1 大電流沖擊問(wen)題(ti) 

      變頻(pin)泵循環(huan)運行方式優點(dian)很(hen)多,但是(shi)實現起(qi)來卻較復雜,關鍵問題是(shi)變頻(pin)器(qi)(qi)輸出切換(huan)問題。在非同(tong)步控制下,即變頻(pin)器(qi)(qi)的頻(pin)率(lv)(lv)和(he)相位與共頻(pin)電源(yuan)的頻(pin)率(lv)(lv)和(he)相位不一致(zhi)時,將水泵電動機從變頻(pin)器(qi)(qi)供電切換(huan)到工(gong)頻(pin)電網供電,將可能(neng)遇到很(hen)大的電流沖擊。 

      如圖2所示,以，1臺電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機為例在KM1斷開(kai)以后,定(ding)子(zi)(zi)(zi)繞組是(shi)開(kai)路的,不可能有(you)勵磁電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。而(er)(er)轉子(zi)(zi)(zi)繞組是(shi)自成回路的,其電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)有(you)一個逐漸(jian)衰減的過(guo)程,它將產生(sheng)(sheng)一個逐漸(jian)衰減的直(zhi)流(liu)磁場(chang),而(er)(er)定(ding)子(zi)(zi)(zi)三(san)相(xiang)繞組將和(he)此旋轉的直(zhi)流(liu)磁場(chang)相(xiang)互切割,從而(er)(er)產生(sheng)(sheng)出相(xiang)應(ying)的感(gan)應(ying)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)勢,即(ji)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機在切斷電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)以后,存在著一個處于非同(tong)步(bu)(bu)發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態的電(dian)(dian)(dian)(dian)(dian)(dian)(dian)磁過(guo)渡過(guo)程。非同(tong)步(bu)(bu)發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態不同(tong)于電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機的再次(ci)生(sheng)(sheng)成發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態,電(dian)(dian)(dian)(dian)(dian)(dian)(dian)動(dong)(dong)機的再次(ci)生(sheng)(sheng)成發(fa)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)狀態是(shi)指定(ding)子(zi)(zi)(zi)繞組 須和(he)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)相(xiang)接,以得到勵磁電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)。而(er)(er)此處所述(shu)情況是(shi)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)機已經脫離電(dian)(dian)(dian)(dian)(dian)(dian)(dian)源(yuan)。 

      一(yi)(yi)般(ban)來說我們在(zai)工程實(shi)踐應用中,總結出來的(de)(de)(de)經驗是(shi)在(zai)水泵(beng)脫離變頻器(qi)后(hou),等待(dai)(dai)一(yi)(yi)段時間(jian)(jian)(參(can)數11-04),待(dai)(dai)電(dian)(dian)(dian)動機(ji)的(de)(de)(de)反電(dian)(dian)(dian)動勢(shi)(shi)降下(xia)來以(yi)后(hou)再接(jie)到(dao)工頻電(dian)(dian)(dian)源(yuan)。如果不(bu)等待(dai)(dai)切換(huan)(huan),即KM2在(zai)閉合的(de)(de)(de)瞬間(jian)(jian),即在(zai)電(dian)(dian)(dian)動機(ji)的(de)(de)(de)反電(dian)(dian)(dian)動勢(shi)(shi)比較高時切換(huan)(huan),會發生兩種情況,①電(dian)(dian)(dian)源(yuan)電(dian)(dian)(dian)壓恰好與(yu)電(dian)(dian)(dian)動機(ji)定子繞組的(de)(de)(de)電(dian)(dian)(dian)動勢(shi)(shi)同相(因(yin)為轉子的(de)(de)(de)轉速(su)在(zai)不(bu)斷下(xia)降,所以(yi)反電(dian)(dian)(dian)動勢(shi)(shi)的(de)(de)(de)周期(qi)略大(da)于工頻電(dian)(dian)(dian)壓的(de)(de)(de)周期(qi)),此(ci)時切換(huan)(huan)無附加(jia)的(de)(de)(de)沖擊(ji)電(dian)(dian)(dian)流(liu)。②若電(dian)(dian)(dian)動機(ji)的(de)(de)(de)反電(dian)(dian)(dian)動勢(shi)(shi)與(yu)工頻電(dian)(dian)(dian)壓的(de)(de)(de)相位差正(zheng)好為180度,則(ze)情況很糟糕,一(yi)(yi)般(ban)的(de)(de)(de)異步電(dian)(dian)(dian)動機(ji)將流(liu)過(guo)額(e)定電(dian)(dian)(dian)流(liu)10倍左右的(de)(de)(de)電(dian)(dian)(dian)流(liu),對供電(dian)(dian)(dian)電(dian)(dian)(dian)網和電(dian)(dian)(dian)動機(ji)會產生過(guo)大(da)的(de)(de)(de)電(dian)(dian)(dian)流(liu)沖擊(ji)。

疊壓給水設備概述

      中(zhong)贏系(xi)列一種新型變(bian)頻(pin)疊壓給(gei)水設(she)(she)備(bei)。分為箱式(shi)無負壓變(bian)頻(pin)設(she)(she)備(bei)和罐(guan)式變頻無(wu)負壓設備。系統串接在市(shi)(shi)政(zheng)自來水(shui)管網(wang)壓(ya)力(li)(li)不足的(de)地方，通(tong)過傳感器檢測出口壓(ya)力(li)(li)并(bing)與設(she)定值(zhi)進行比較(jiao)，運(yun)算出需要增加的(de)壓(ya)力(li)(li)值(zhi)，確定水(shui)泵投入運(yun)行臺數(shu)和(he)電機轉速。該(gai)設(she)備較(jiao)大限(xian)度(du)地利用了市(shi)(shi)政(zheng)自來水(shui)管網(wang)的(de)原有壓(ya)力(li)(li)，對市(shi)(shi)政(zheng)管網(wang)不產生負壓(ya)，用不銹鋼水(shui)箱或無(wu)負壓(ya)罐(guan)取(qu)代老式水(shui)池，減少了用水(shui)二次污(wu)染。是供水(shui)領域(yu)新一代節能型(xing)產品。

疊壓給水設備(bei)技術特(te)點：

1、設備(bei)全密封運行(xing)，不與(yu)空氣接(jie)觸，水接(jie)觸過(guo)流部(bu)分均為(wei)食品(pin)級不銹(xiu)鋼材質，避(bi)免二次(ci)污染，保(bao)證飲(yin)用水的良好水質；

2、  較好的水利模型， 加工制作工藝和外表面處理，提高系統使(shi)用(yong)效率和使(shi)用(yong)壽命；

3、系統結(jie)構設(she)計緊湊，安裝(zhuang)與(yu)維護快(kuai)捷方便，同時節(jie)省設(she)備占(zhan)地面(mian)積(ji)，節(jie)省大量土建投(tou)資；

4、充分利用(yong)管網壓(ya)力，疊(die)加增壓(ya)，節省電能(neng)，密閉(bi)管道運(yun)行，避免跑(pao)，冒，滴，滲，漏等水(shui)資源流失；

5、通過自主研發的控制(zhi)模(mo)塊進(jin)行(xing)智能化控制(zhi)，提高系統(tong)使用的穩(wen)定性，同時可以選配遠程監(jian)控模(mo)塊輕松通過新(xin)號傳輸第，，一時間掌握(wo)系統(tong)運(yun)行(xing)情況。

疊壓給水設備產品(pin)特點(dian)

（1）高度有(you)效(xiao)(xiao)節能(neng)：充分利用市政水源本身(shen)具(ju)有(you)的壓力(li)熱(re)能(neng)，差多(duo)少(shao)(shao)補多(duo)少(shao)(shao)，切實有(you)效(xiao)(xiao)地(di)、較(jiao)大限(xian)度地(di)發揮了變頻調速的節能(neng)效(xiao)(xiao)果。

（2）潔凈(jing)衛(wei)生(sheng)：構成連續密閉(bi)的增壓(ya)供(gong)水方(fang)式， 保持(chi)了市政(zheng)水源水質衛(wei)生(sheng)標(biao)準，從根本(ben)上避免了增壓(ya)系統造成的水質標(biao)準降低和各種水源污染問題。

（3）避(bi)免(mian)浪費：不僅淘汰了高位水(shui)(shui)箱(xiang)，還(huan)徹(che) 地取消了地面（地下）水(shui)(shui)池水(shui)(shui)箱(xiang)，避(bi)免(mian)了水(shui)(shui)箱(xiang)溢流，定期(qi)清洗造成的水(shui)(shui)源浪費。

（4）運行(xing)噪(zao)聲低：系列產品(pin)采用全變(bian)頻調整方案時，大(da)部分時間特別(bie)在夜間處(chu)于(yu)低噪(zao)聲運行(xing)工況。

（5）設計了全密閉(bi)的、兼有緩沖作用(yong)和動態補償作用(yong)的水源箱(xiang)罐，與目前市場(chang)所謂無負壓罐相比(bi)，更具有實際(ji)意(yi)義，并使控制(zhi)系統(tong)得以簡化。

（6）該系列產品(pin)控(kong)制系統(tong)充分總結了本及(ji)國內外(wai)變頻變頻給水設備設計制造經驗，采用(yong)規范(fan)通用(yong)的控(kong)制系統(tong)技術(shu)方案，可(ke)換用(yong)任意廠商的變頻器、調(diao)節(jie)器、PLC和其他元器件，調(diao)試維修特別(bie)方便，為產品(pin)的終身售(shou)后服務(wu)奠定(ding)了良好(hao)基礎，不會因(yin)技術(shu)進步而導致售(shou)后服務(wu)問題。

（7）該系列產品控制系統具有(you)較高智能(neng)(neng)性(xing)，設計中充分考慮了(le)機、電、儀協調(diao)配合，具有(you)欲速則(ze)不達的檢測(ce)監視(shi)和簡(jian)單(dan)方便的人機交互(hu)功能(neng)(neng)。具有(you)全面的故(gu)障(zhang)保(bao)護功能(neng)(neng)和對策，變頻器故(gu)障(zhang)保(bao)護時(shi)，自動(dong)降級運(yun)行（成為工頻自動(dong)供水設備廠），自動(dong)系統故(gu)障(zhang)時(shi)，還可手動(dong)操作(zuo)應(ying)急(ji)備用，贏(ying)得維(wei)修時(shi)間(jian)。

（8）可(ke)按要求選配(pei)各(ge)種通訊(xun)接(jie)口、協議，從而(er)可(ke)連(lian)接(jie)各(ge)種人機(ji)界面、監(jian)控(kong)計算機(ji)，可(ke)與各(ge)種控(kong)制網絡，通信(xin)網絡相接(jie)，適用于特殊(shu)、復雜的運行控(kong)制和聯網監(jian)控(kong)要求。可(ke)為用戶開發配(pei)套監(jian)控(kong)軟件。

疊(die)壓給水設備應用范圍

◆新建住宅小區或樓宇等生活用水。

◆已(yi)建有水池、水箱的供水方式為(wei)了減(jian)少水質污(wu)染的 改造。

◆工礦企業的(de)生產、生活(huo)用水(shui)。

◆城鎮供(gong)(gong)水(shui)系(xi)統長(chang)距離供(gong)(gong)水(shui)中(zhong)間加壓站，區域供(gong)(gong)水(shui)管網(wang)加壓站，高(gao)位地域集中(zhong)供(gong)(gong)水(shui)加壓站。