目前自(zi)(zi)控自(zi)(zi)吸泵(beng)產品種類繁多，質量良莠不齊，自控自吸泵選型根據設計流量、所需揚程、管道口徑選泵。自控自吸泵顧名思義就是一種離心式原理的自吸泵類產品。自控自吸泵葉輪分為閉式葉輪及開式葉輪兩種、閉式葉輪只能輸送不含顆粒雜質的類似于清水的液體、特點有高揚程的型號供用戶選擇、而開式葉輪的自控自吸泵特點是不僅僅能輸送清水而且含有固體顆粒及雜質的液體也能輸送、只是揚程范圍相對閉式葉輪的自控自吸泵要低一點。

選(xuan)型方(fang)法(fa)要因(yin)地制宜選(xuan)擇自(zi)吸(xi)(xi)(xi)泵(beng)(beng)，氣(qi)液混(hun)合(he)式(shi)(shi)自(zi)吸(xi)(xi)(xi)泵(beng)(beng)的(de)(de)工(gong)作(zuo)過(guo)程，由(you)于(yu)自(zi)吸(xi)(xi)(xi)泵(beng)(beng)泵(beng)(beng)體(ti)(ti)的(de)(de)特殊(shu)結(jie)構，水(shui)(shui)泵(beng)(beng)停轉(zhuan)后，泵(beng)(beng)體(ti)(ti)內存有一定量的(de)(de)水(shui)(shui)，泵(beng)(beng)再次啟動(dong)后由(you)于(yu)葉(xie)(xie)輪(lun)旋(xuan)轉(zhuan)作(zuo)用(yong)，吸(xi)(xi)(xi)入(ru)管路(lu)(lu)的(de)(de)空(kong)氣(qi)和(he)水(shui)(shui)充分混(hun)合(he)，并(bing)被(bei)排到氣(qi)水(shui)(shui)分離室，氣(qi)水(shui)(shui)分離室上(shang)部(bu)的(de)(de)氣(qi)體(ti)(ti)逸出(chu)，下部(bu)的(de)(de)水(shui)(shui)返回葉(xie)(xie)輪(lun)，重新和(he)吸(xi)(xi)(xi)入(ru)管路(lu)(lu)的(de)(de)剩(sheng)余空(kong)氣(qi)混(hun)合(he)，直(zhi)到把泵(beng)(beng)及吸(xi)(xi)(xi)入(ru)管內的(de)(de)氣(qi)體(ti)(ti)全(quan)部(bu)排出(chu)，完成自(zi)吸(xi)(xi)(xi)，并(bing)正常(chang)抽(chou)水(shui)(shui)。水(shui)(shui)環輪(lun)式(shi)(shi)自(zi)吸(xi)(xi)(xi)泵(beng)(beng)是(shi)將(jiang)水(shui)(shui)環輪(lun)和(he)水(shui)(shui)泵(beng)(beng)葉(xie)(xie)輪(lun)組合(he)在一個殼體(ti)(ti)內，借助水(shui)(shui)環輪(lun)將(jiang)氣(qi)體(ti)(ti)排出(chu)，實(shi)現(xian)自(zi)吸(xi)(xi)(xi)功(gong)能。

要適當超標(biao)選(xuan)水(shui)泵(beng)(beng)(beng)，確記水(shui)泵(beng)(beng)(beng)類(lei)型后，要考(kao)慮(lv)其(qi)經濟性能，特別要注意水(shui)泵(beng)(beng)(beng)的(de)揚程和流量及(ji)其(qi)配套動(dong)力(li)的(de)選(xuan)擇。必須注意，水(shui)泵(beng)(beng)(beng)標(biao)牌上注明的(de)揚程(總(zong)揚程)與使用時(shi)的(de)出水(shui)揚程(實(shi)際揚程)是有差別的(de)，這是由于水(shui)流通過輸水(shui)管和管路附近(jin)時(shi)會有一定的(de)阻力(li)損失。所(suo)以，實(shi)際揚程一般要比總(zong)揚程低10%20%，出水(shui)量也相(xiang)應減少(shao)。

因(yin)此(ci)，實際使用(yong)(yong)(yong)(yong)時，只(zhi)能(neng)按標牌所注揚程(cheng)和流(liu)量的(de)(de)(de)80%90%佔算，水(shui)(shui)(shui)泵(beng)配套動力(li)的(de)(de)(de)選擇，可按標牌 上注明(ming)的(de)(de)(de)功率(lv)選擇，為(wei)了使水(shui)(shui)(shui)泵(beng)啟動迅速(su)和使用(yong)(yong)(yong)(yong) 安(an)全，動力(li)機的(de)(de)(de)功率(lv)也略(lve)大于水(shui)(shui)(shui)泵(beng)所需功率(lv)，一般(ban)高(gao)出10%左右(you)為(wei)宜；如果己有(you)動力(li)，選擇水(shui)(shui)(shui)泵(beng)時，則(ze)可按動力(li)機的(de)(de)(de)功率(lv)選擇與(yu)之(zhi)相(xiang)配套的(de)(de)(de)水(shui)(shui)(shui)聚。要(yao)嚴格(ge)手續(xu)購(gou)水(shui)(shui)(shui)泵(beng)。選擇水(shui)(shui)(shui)泵(beng)時還(huan)要(yao)審驗，只(zhi)有(you)三證齊全方(fang)能(neng)避免購(gou)置(zhi)淘(tao)汰產(chan)品及(ji)劣質產(chan)品。當給水(shui)(shui)(shui)管網無調節設施時，宜采用(yong)(yong)(yong)(yong)調速(su)泵(beng)組(zu)或(huo)(huo)額定轉速(su)泵(beng)組(zu)編組(zu)運(yun)行供水(shui)(shui)(shui)。泵(beng)組(zu)的(de)(de)(de)出水(shui)(shui)(shui)量不(bu)應小于小區(qu)給水(shui)(shui)(shui)設計流(liu)量，并應以(yi)消防工況校核。選擇水(shui)(shui)(shui)箱、水(shui)(shui)(shui)塔的(de)(de)(de)提升泵(beng)應盡量減少泵(beng)的(de)(de)(de)臺(tai)(tai)數(shu)，宜一用(yong)(yong)(yong)(yong)一備(bei)；當單泵(beng)可以(yi)滿足要(yao)求時，則(ze)不(bu)宜采用(yong)(yong)(yong)(yong)多(duo)臺(tai)(tai)并聯方(fang)式(shi)；若必須采用(yong)(yong)(yong)(yong)多(duo)臺(tai)(tai)并聯運(yun)行或(huo)(huo)大小泵(beng)搭配方(fang)式(shi)時，其型(xing)號、臺(tai)(tai)數(shu)不(bu)宜過(guo)多(duo)，型(xing)號一般(ban)不(bu)宜超過(guo)兩種，自控自吸泵(beng)的(de)(de)(de)揚程(cheng)范圍應相(xiang)近；并聯運(yun)行時每臺(tai)(tai)泵(beng)宜仍在有(you)效區(qu)范圍內運(yun)行。

變頻調(diao)速(su)泵(beng)(beng)(組(zu))設計(ji)供水(shui)(shui)流量(liang)應(ying)保證滿(man)足(zu)生活(huo)給(gei)水(shui)(shui)系(xi)(xi)統中的(de)(de)設計(ji)秒流量(liang)的(de)(de)要求(qiu)。電(dian)(dian)源須可(ke)靠(雙(shuang)電(dian)(dian)源或(huo)雙(shuang)回路供電(dian)(dian));自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)的(de)(de)工(gong)作(zuo)(zuo)點(dian)(dian)應(ying)選(xuan)在自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)特性曲(qu)線(xian)(xian)(xian)(Q-H曲(qu)線(xian)(xian)(xian))的(de)(de)有(you)(you)效工(gong)作(zuo)(zuo)區內(nei)，并不(bu)得選(xuan)在Q-H曲(qu)線(xian)(xian)(xian)的(de)(de)延長(chang)線(xian)(xian)(xian)上，設計(ji)的(de)(de)不(bu)利工(gong)作(zuo)(zuo)點(dian)(dian)應(ying)在自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)特性曲(qu)線(xian)(xian)(xian)有(you)(you)效區段(duan)的(de)(de)右端點(dian)(dian)，即(ji)自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)出水(shui)(shui)量(liang)大。而揚程較低但能(neng)(neng)滿(man)足(zu)要求(qiu)的(de)(de)那個點(dian)(dian)，也就是自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)特性曲(qu)線(xian)(xian)(xian)有(you)(you)效區的(de)(de)低點(dian)(dian)與管道特性曲(qu)線(xian)(xian)(xian)的(de)(de)交叉點(dian)(dian)。自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)調(diao)速(su)工(gong)作(zuo)(zuo)范圍能(neng)(neng)盡量(liang)在自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)有(you)(you)效段(duan)內(nei)；調(diao)速(su)范圍宜設在自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)供水(shui)(shui)量(liang)的(de)(de)25%～100%之(zhi)間；設備應(ying)具(ju)有(you)(you)水(shui)(shui)位自(zi)(zi)(zi)(zi)(zi)(zi)動(dong)控(kong)(kong)制(zhi)功能(neng)(neng)。生活(huo)加(jia)壓給(gei)水(shui)(shui)系(xi)(xi)統的(de)(de)自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)機組(zu)應(ying)設置備用泵(beng)(beng)，備用泵(beng)(beng)的(de)(de)供水(shui)(shui)能(neng)(neng)力(li)應(ying)大于任何一臺運行自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)的(de)(de)供水(shui)(shui)能(neng)(neng)力(li)，自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)宜自(zi)(zi)(zi)(zi)(zi)(zi)動(dong)切換，交替(ti)運行。自(zi)(zi)(zi)(zi)(zi)(zi)控(kong)(kong)自(zi)(zi)(zi)(zi)(zi)(zi)吸(xi)泵(beng)(beng)所配電(dian)(dian)機的(de)(de)電(dian)(dian)壓應(ying)相同，且(qie)電(dian)(dian)源制(zhi)式應(ying)與國家電(dian)(dian)網(wang)供電(dian)(dian)制(zhi)式相同。