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2020-01-21View Original

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Reply #22020-01-22
"Multirentrifiques centrifuges",
Reply #32020-01-22
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Reply #42020-01-22
"Un modèle de C6 demultentrifiques centrifuges sans无有铭牌,出口出口阀门全开,入口阀门开5个开度启动电机无转速还未达到额定转速,电机驱动端、风机驱动端异响、振动严重,电机启动电流36A(电气人员说运行8A)电流最低降到3A就不再再下降了然后跳机。经检查盘车正常很轻快无卡涩一个手很轻松就能盘动联轴器对中打表复测无问题联轴器为弹性套柱销联轴器。弹性套圈无问题联轴器螺栓无问题风机轴承内有黄油干净风机转子无轴向窜动拆联轴器螺栓空试电机电流86A电机前后轴承无振动无异常噪声用撬棍撬电机联轴器时电机转子可以轴向窜动nmm回装联轴器后启动电机当轴承马上开始振动异响时停电机然后不震动无异响后(电机还在转)再开电机如此反复开关4次电机带着风机达到额定转速电流86A风机无振动无异响请大神帮们忙分析下振动、异响、和超电流的原因个人认为是电机轴向窜动造成的此次事故对不对还有小型深沟球轴承的电机转子轴向窜动的原因和危害有没有可能造成风机振动异响"
Reply #52020-01-22
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Reply #62020-01-22
"Ce phénomène devrait être inspecté en démontant. Il est très probable que ce soit un problème avec les roulements. C'est une considération mécanique. De plus, en termant, l'ouverture d'entrée avant n'est pas apparueutte前喘振,开度越小越好。每当停机时入口关闭到不出现喘振时的最小电流所对应的入口阀门开度。这个开度作为下次启动前前的准备开度。你5~1太宏观了。这要是对于大型离心风机(压缩机),开度都会有很大影响。供参考。"
Reply #72020-01-22
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Reply #82020-01-22
"Merci,小型鼓风机,我又问了下电气电机45Kw左右"
Reply #92020-01-25
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Reply #102020-01-25
"Comme je l'aipensé,请继续分析好吗谢谢"
Reply #112020-01-25
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Reply #122020-01-25
"Le fait que le roulement轻松代表无轴卡顿,速度一高就震动代表动平衡不好,两个原因:转子动平衡不好,风机轴承坏。轴弯曲,叶轮腐蚀,风道有杂物阻拦。"
Reply #132020-01-26
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Reply #142020-01-28
"Comme Changbaaishai分析的的很有道理。这个现象很明显就是电机启动负荷过大启动电流超高跳车了。启动前进口阀门应该尽可能小一点。当达到额定转速时开大进口阀。"
Reply #152020-02-01
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