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熔體泵技術(shù)
您的當(dāng)前位置：巴特首頁(yè) > 技術(shù)支持 > 熔體泵技術(shù) >熔體泵聯(lián)軸節(jié)脫扣防范措施
來(lái)源：巴特計(jì)量泵、齒輪泵公司 發(fā)布時(shí)間：2013-11-15 10:45:52 瀏覽次數(shù)：次
為了保證熔體泵正常運(yùn)行，避免聯(lián)軸節(jié)脫扣事故的再次發(fā)生，鄭州巴特熔體泵通過(guò)對(duì)情況的認(rèn)真分析和研究，制定了以下防范措施。
1 穩(wěn)定熔體泵的工況
熔體泵扭矩計(jì)算公式：
其中： 為輸入扭矩（工作扭矩），Nm；△p為泵出人口壓差，MPa； 為熔體泵的機(jī)械效率；q為泵的排量，即齒輪泵每轉(zhuǎn)排出的熔體質(zhì)量。
我們可以看出，當(dāng)熔體泵機(jī)械效率保持不變時(shí)，熔體泵工作扭矩與泵出人口壓差成正比。適當(dāng)降低熔體泵出口壓力有助于降低熔體泵的扭矩。因此，我們提高了后路熔體過(guò)濾器的切換標(biāo)準(zhǔn)，同時(shí)適當(dāng)降低熔體管線壓力，使熔體泵出口壓力降至16.8MPa以下，從而使熔體泵轉(zhuǎn)速和扭矩有所降低，遠(yuǎn)離臨界點(diǎn)。
2 加強(qiáng)現(xiàn)場(chǎng)檢查
熔體泵聯(lián)軸節(jié)發(fā)生脫扣現(xiàn)象后，我們立即將它定為特護(hù)設(shè)備，每天定時(shí)由操作人員，管理人員和維修人員對(duì)它進(jìn)行仔細(xì)檢查和記錄，特別對(duì)軸封處認(rèn)真查看，防止軸封漏量過(guò)大或沒(méi)有漏量，避免由此引起的聯(lián)軸節(jié)脫扣現(xiàn)象。
3.3 加強(qiáng)對(duì)添加劑配置的管理
我們對(duì)DEG的加料系統(tǒng)進(jìn)行了改進(jìn)，在加料過(guò)程中增加過(guò)濾環(huán)節(jié)，加料完畢后立即用蓋板將加料口封住，防止雜質(zhì)微粒進(jìn)入系統(tǒng)。
4 加強(qiáng)工藝監(jiān)控
4.1加強(qiáng)對(duì)溫度的監(jiān)控
通過(guò)對(duì)終聚釜或氣相管線以及熔體泵本體的溫度的監(jiān)控，可以發(fā)現(xiàn)設(shè)備內(nèi)部有無(wú)加熱不均勻現(xiàn)象，從而消除并避免冷點(diǎn)的出現(xiàn)，防止產(chǎn)生的硬塊進(jìn)入泵內(nèi)造成聯(lián)軸節(jié)脫扣。
4.2 加強(qiáng)對(duì)黏度的監(jiān)控
我們將黏度控制指標(biāo)偏差范圍由±4縮小為±2，減小黏度的波動(dòng)，穩(wěn)定熔體泵工況，減小因黏度影響造成的扭矩波動(dòng)。
4.3 加強(qiáng)對(duì)冷卻水的監(jiān)控
通過(guò)加強(qiáng)對(duì)軸封冷卻水溫度和壓力的監(jiān)控，可以及時(shí)發(fā)現(xiàn)冷卻水的異常變化，避免因此產(chǎn)生的對(duì)軸封冷卻效果的影響。
5 增大操作人員的培訓(xùn)力度
增強(qiáng)操作人員對(duì)緊急事故的處理能力，特別是在后路增壓泵跳停后的反應(yīng)速度和處理方式，將會(huì)大大減少因此而造成的熔體泵聯(lián)軸節(jié)脫落現(xiàn)象。同時(shí)通過(guò)培訓(xùn)，糾正了部分人員在操作手法上的不足，大程度地降低人為失誤，如升降負(fù)荷過(guò)快等。
鄭州巴特熔體泵有限公司
主營(yíng)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。
主要聯(lián)系方式：
國(guó)內(nèi)銷(xiāo)售部：0371-67993077 67993177
國(guó)外銷(xiāo)售部：0371-61682066 61682088
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