具體參數

拖泵(beng)分(fen)類(lei)選型

37千(qian)(qian)(qian)(qian)瓦(wa)(wa)（目前國(guo)內標準混凝土泵，37千(qian)(qian)(qian)(qian)瓦(wa)(wa)以下為細石砂漿(jiang)泵）、45千(qian)(qian)(qian)(qian)瓦(wa)(wa)、55千(qian)(qian)(qian)(qian)瓦(wa)(wa)、75千(qian)(qian)(qian)(qian)瓦(wa)(wa)、90千(qian)(qian)(qian)(qian)瓦(wa)(wa)、110千(qian)(qian)(qian)(qian)瓦(wa)(wa)、130千(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴油(you)）、132千(qian)(qian)(qian)(qian)瓦(wa)(wa)、162千(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴油(you)）、174千(qian)(qian)(qian)(qian)瓦(wa)(wa)（柴油(you)）等(deng)等(deng)。

選擇多大(da)(da)電(dian)(dian)機(ji)混凝土泵，首(shou)先要(yao)考(kao)慮變壓器容量，其(qi)次(ci)考(kao)慮距離混凝土泵的遠近和線(xian)徑大(da)(da)小，以免壓降過(guo)(guo)大(da)(da)造(zao)成電(dian)(dian)流增(zeng)高(gao)或(huo)跳閘停機(ji)，過(guo)(guo)大(da)(da)功率造(zao)成成本增(zeng)加(jia)和使(shi)用不便。電(dian)(dian)機(ji)過(guo)(guo)小，同時也滿足不了(le)工(gong)程需要(yao)。

混凝(ning)土(tu)輸(shu)(shu)(shu)送(song)泵(beng)功率、混凝(ning)土(tu)輸(shu)(shu)(shu)送(song)泵(beng)出口壓力(li)、混凝(ning)土(tu)輸(shu)(shu)(shu)送(song)泵(beng)輸(shu)(shu)(shu)送(song)量(liang)之(zhi)間的關系(xi)。

一臺混凝土(tu)輸送(song)泵(beng)的電機功率是(shi)決定出口壓力(li)和(he)輸送(song)方量的前提條件，在電機功率一定的情況下，壓力(li)的升高必(bi)將使(shi)輸送(song)量降低；相反，降低出口壓力(li)，將會(hui)使(shi)輸送(song)量增加(jia)。

為了保證混凝土輸送(song)(song)泵既要有(you)較大輸送(song)(song)量(liang)，又能有(you)一(yi)定(ding)的(de)(de)(de)出(chu)口(kou)壓力和與之相(xiang)匹配的(de)(de)(de)經(jing)濟功(gong)(gong)率(lv)(lv)，在(zai)混凝土輸送(song)(song)泵的(de)(de)(de)設計(ji)中(zhong)，大都采(cai)用了恒(heng)功(gong)(gong)率(lv)(lv)柱塞泵；即恒(heng)功(gong)(gong)率(lv)(lv)值選定(ding)后，當出(chu)口(kou)壓力升高(gao)(gao)時(shi)，油泵輸出(chu)排(pai)量(liang)會自動降低(di)，達(da)到(dao)與功(gong)(gong)率(lv)(lv)設計(ji)相(xiang)對應的(de)(de)(de)值；如果既要達(da)到(dao)出(chu)口(kou)壓力高(gao)(gao)，又想(xiang)得到(dao)輸送(song)(song)量(liang)大的(de)(de)(de)目(mu)的(de)(de)(de)。惟(wei)一(yi)的(de)(de)(de)途(tu)徑就(jiu)是增加電機功(gong)(gong)率(lv)(lv)。

因此(ci)(ci)，在國家新(xin)標準中，引用(yong)了混(hun)凝(ning)土輸送(song)泵的(de)(de)能力(li)(li)指(zhi)數(shu)概念（以(yi)MPa·m3/h為度(du)量單(dan)位）；即混(hun)凝(ning)土輸送(song)泵的(de)(de)實(shi)際(ji)出口壓力(li)(li)與每(mei)小時(shi)實(shi)際(ji)輸送(song)量之乘積，該值越(yue)大(da)，其能力(li)(li)指(zhi)數(shu)也越(yue)大(da)，電機的(de)(de)功(gong)(gong)(gong)率(lv)也將越(yue)大(da)，由(you)此(ci)(ci)實(shi)現(xian)大(da)排量、高揚程的(de)(de)目的(de)(de)。科尼樂公司(si)在設計時(shi)，還采用(yong)了高低壓切換(huan)的(de)(de)功(gong)(gong)(gong)能設計，以(yi)滿(man)足不(bu)同(tong)的(de)(de)施工要求，在經濟狀態下，又能產生較大(da)的(de)(de)輸送(song)量，或者以(yi)相(xiang)同(tong)的(de)(de)電機功(gong)(gong)(gong)率(lv)，產生較高的(de)(de)出口壓力(li)(li)。