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["저희가 저流量运行会出现什么状况,为什么?",,"제가大佬们详细解答一下这个问题吧"\n["小流量运行时,径向力大,泵振动大。如果低于热控最小流量,介质会因为温升而汽化导致泵没法用了。"\n"离心泵小小时运行时,没有足够的冷流体带叶轮旋转与被输送介质摩擦产生的热量泵体会发热且温度不断的升高随后是泵抽空。抽空会导致泵振动加剧轴承箱内的润滑油温度升高抱轴导致密封损坏。润滑油温度高了会降低润滑性能温度高到一定程度会着火。如果是油泵的话密封损坏泄漏会导致着火。"\n"小流量运行时径向力大泵振动大。"\n"泵过热或产生气蚀。原因是泵内部功率损失引起液体温度升高;泵产生震动及噪音。原因是叶轮流道内产生旋涡及叶轮进口处产生二次回流;叶轮流道内液体脱流;泵及管道内压力产生波动;有驼峰特性的泵浦也会出现喘振现象导致震动及噪音;3轴承及轴承座易损坏。低流量运行会产生径向力尤其对单蜗壳泵同时径向力也会增大。"\n

2018-07-03View Original

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如题,求大佬详细解答
Reply #22018-07-03
小流量运行时,径向力大,泵振动大。如果低于热控最小流量,介质会因为温升而汽化,导致泵没法用了。
Reply #32018-07-03
离心泵流量过小时,没有足够的冷流体带有叶轮旋转与被输送介质摩擦产生的热量泵体会发热,且温度不断的升高,随后是泵抽空。 抽空会导致泵振动加剧,导致轴承箱内的润滑油温度升高、抱轴,导致密封损坏。 润滑油温度高了,润滑性能降低,温度高到一定程度会着火。是油泵的话,密封损坏泄漏也会导致着火。
Reply #42018-07-05
小流量运行时,径向力大,泵振动大。
Reply #52018-07-06
1.泵過熱或產生氣蝕。原因是泵內部功率損失引起液體溫度升高; 2.泵產生震動及噪音。原因是葉輪流道內產生旋渦及葉輪出口處產生二次迴流;葉輪流道內液體脫流;泵及管道內壓力產生波動;有駝峰特性的泵浦也會出現喘振現象導致震動及噪音; 3.軸承及軸承座易損壞。低流量運行會產生徑向力(尤其對單蝸殼泵),同時軸向力也會增大。

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