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計(jì)量泵技術(shù)
您的當(dāng)前位置：巴特首頁 > 技術(shù)支持 > 計(jì)量泵技術(shù) >了解巴特熔體計(jì)量泵的控制系統(tǒng)
來源：巴特計(jì)量泵、齒輪泵公司 發(fā)布時(shí)間：2013-11-21 15:20:29 瀏覽次數(shù)：次
鄭州巴特熔體計(jì)量泵泵公司根據(jù)市場(chǎng)的需求，BATTE公司提供驅(qū)動(dòng)裝置和熔體泵控制系統(tǒng)，并可為客戶設(shè)計(jì)系統(tǒng)，以滿足特殊的加工工藝要求。我們有豐富的施工經(jīng)驗(yàn)和卓越的工程設(shè)計(jì)能力，為客戶在精密擠出領(lǐng)域提供佳方案。針對(duì)精密擠出中對(duì)穩(wěn)定壓力，恒定流量的要求，我公司開發(fā)了儀表和PLC兩個(gè)系列四種控制系統(tǒng)（P10，S10，S20，S60），來滿足擠出領(lǐng)域的大多要求。計(jì)量泵首選巴特品牌。
P10儀表控制系統(tǒng)：1.兩個(gè)壓力閉環(huán)控制 2.壓力上下限報(bào)警
3.三個(gè)獨(dú)立溫度控制 4.泵低溫保護(hù)
S10 PLC控制系統(tǒng)：1.兩個(gè)壓力閉環(huán)控制 2.壓力上下限報(bào)警
3.流量控制 4.手自動(dòng)無擾切換
5.觸摸屏人機(jī)界面
S20 PLC控制系統(tǒng)：1.兩個(gè)壓力閉環(huán)控制 2.壓力上下限報(bào)警
3.三個(gè)獨(dú)立溫度控制 4.流量控制
5.手自動(dòng)無擾切換 6.觸摸屏人機(jī)界面
7.過程值連續(xù)監(jiān)控
S60 PLC控制系統(tǒng)：1.兩到四個(gè)壓力閉環(huán)控制 2.壓力上下限報(bào)警
3.20-30個(gè)獨(dú)立溫度控制 4.流量監(jiān)控
5.手自動(dòng)無擾切換 6.觸摸屏人機(jī)界面
7.過程值連續(xù)監(jiān)控 8.運(yùn)行監(jiān)控和故障檢修
9.適應(yīng)更復(fù)雜的擠出或復(fù)合系統(tǒng)
系統(tǒng)工作原理：
采用西門子S200系列PLC+觸摸屏對(duì)熔體泵及上游主機(jī)進(jìn)行閉環(huán)控制，系統(tǒng)同時(shí)顯示熔體泵進(jìn)料口、出料口壓力及轉(zhuǎn)速和電流等數(shù)據(jù)，并可對(duì)流量進(jìn)行控制。系統(tǒng)具有的機(jī)電一體化特性，實(shí)現(xiàn)壓力、流量的手動(dòng)/自動(dòng)控制，提高生產(chǎn)質(zhì)量和效率，并且具有一定節(jié)能效果。
熔體計(jì)量泵系統(tǒng)控制：電氣框圖如上，正常時(shí)系統(tǒng)可設(shè)定一個(gè)壓力值，由驅(qū)動(dòng)器拖動(dòng)電機(jī)進(jìn)行調(diào)速運(yùn)行，維持出料流量恒定和擠出壓力恒定。當(dāng)壓力增加流量過大時(shí)，裝在熔體泵出口的壓力傳感器將檢測(cè)到的壓力信號(hào)轉(zhuǎn)換成電信號(hào)送到PLC，PLC通過精準(zhǔn)比較、計(jì)算，發(fā)出信號(hào)給變頻器控制部分，驅(qū)動(dòng)器的輸出頻率下降，進(jìn)而使泵電機(jī)轉(zhuǎn)速降低，管道壓力降低，恢復(fù)到設(shè)定狀態(tài)，達(dá)到出料口流量恒定的目的，滿足正常的生產(chǎn)需求。
當(dāng)流量減少壓力降低時(shí)，而是通過相反的過程，使管道出口的壓力、流量恢復(fù)正常。也就是，當(dāng)管網(wǎng)受外界干擾或流量變化，引起壓力波動(dòng)時(shí)，由PLC控制驅(qū)動(dòng)器自動(dòng)調(diào)節(jié)輸出頻率，改變泵電機(jī)轉(zhuǎn)速，從而恒定輸出流量，以維持模頭壓力在設(shè)定范圍內(nèi)，達(dá)到擠出精密制品，并相應(yīng)的提高產(chǎn)品質(zhì)量。
主機(jī)輔助控制：系統(tǒng)控制主機(jī)保持一個(gè)較穩(wěn)定的輸出，將物料充滿熔體泵的入料口，同時(shí)又不至于壓力太高損壞擠出機(jī)和熔體泵，使熔體泵穩(wěn)定的輸送物料成為可能。
牽引機(jī)輔助控制：（可選）牽引機(jī)控制器根據(jù)在線檢測(cè)提供的信號(hào)，及時(shí)控制牽引電機(jī)調(diào)整牽引速度，把好擠出系統(tǒng)的后一關(guān)。
計(jì)量泵控制系統(tǒng)的主要特點(diǎn)：動(dòng)/自動(dòng)切換、工頻運(yùn)行、故障報(bào)警來控制系統(tǒng)的正常工作。采用壓力傳感器，進(jìn)行現(xiàn)場(chǎng)數(shù)據(jù)采樣，并經(jīng)模擬量模塊輸入PLC完成維持壓力恒定的自動(dòng)控制。系統(tǒng)可根據(jù)流量、壓力大小自動(dòng)調(diào)節(jié)熔體泵的轉(zhuǎn)速，維持設(shè)定的壓力、流量在設(shè)定值。同時(shí)并記錄時(shí)實(shí)數(shù)據(jù)、歷史數(shù)據(jù)。無管網(wǎng)沖擊，降低噪聲，延長壽命。 系統(tǒng)具有過壓、欠壓、過流、過載等保護(hù)功能。
鄭州巴特熔體泵有限公司
主營產(chǎn)品：計(jì)量泵、齒輪泵、熔體泵、高溫熔體泵、
熔體齒輪泵、熔體計(jì)量泵、化學(xué)泵、化工泵。
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