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单级双吸泵中开泵调试方法

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【摘要】:
一、单级双吸中开泵泵起动前.转动泵的转子,应该轻滑均匀,关闭出水闸阀,向泵内注水(如无底阀则用真空泵抽吸引水),要保证泵内充满水,无空气窝存。  二、如果泵上装有真空表或压力表,要关闭其与泵相连接的旋塞再起动电动机,待转速正常后再打开,然后逐渐打开出水闸阀,如流量过大,可以适当关小闸阀进行调节,反之,流量过小时,将闸阀开大.  三、单级双吸泵均匀地拧紧填料压盖上的压紧螺母,使液体成滴状漏出,同时注意填料腔外的温升.  四、当停止水泵运转时,要先关闭真空表及压力表的旋塞和出水管路上的闸阀,然后切断电动机的电源,如所处环境的温底较低时,则应将泵体下部的四方螺塞打开,去掉剩水,以免冻裂.  五、单级双吸泵长期停止使用时,应该拆开水泵,将零件上的水擦干,在加工表面涂上防锈油保管好.  六、运转  水泵轴承最高温度不应超过75度,润滑油轴承用的钙基黄油的数量以古轴承体空间的1/3-1/2为宜.填料磨损时可适当压紧填料压盖,若磨损过多应更换.定期检查弹性联轴器部件,注意电机轴承温升,运转过程中,如发现噪声或其他不正常的声音时,应立即停车,检查其原因,加以消除.  七、单级双吸泵不得任意提高水泵的转速,但可以降低转速使用,如本型额定转速为n.流量为Q,轴功率为N.降低转速为n1,降速后流量,扬程,轴功率分别为Q1,H1和N1,其相关系,可用下列公式进行换算,Q1=(n1/n)QH1=(n1/n)2QH1=(n1/n)2HN1=(n1/n)3N  泵可能发生的故障及其消除方法  一、泵不吸水,压力表及真空表的指针剧烈跳动。方法:往泵内注水,拧紧堵塞露气处;  二、泵不吸水,真空表显示高度真空,校正或更换底阀,清洗或更换吸水管路,降低吸水高度;  三、泵不出水,压力表显示有压力,检查或缩短出水管路,纠正电动机的旋转方向,清洗叶轮,检查电源电压,提高转速;  四、单级双吸泵流量不足或扬程太低,清洗叶轮或管路,更换损坏的密封环,调整额定转速;  五、泵消耗功率太大,拧松填料压盖,检查原因,消除机械摩擦,减小闸阀开度;  六、单级双吸泵内声音反常,泵不上水清理吸水管路之底阀,降低吸水高度,检查底阀,降低吸水高度,堵塞漏气处,降低液体温度,调节出水闸阀,使之在规定的性能范围内运转;  七、泵不正常振动,调节出水闸阀,使之在规定的性能范围内运转,校正泵轴和电动机的同心度,拧紧底脚螺栓;  八、单级双吸泵轴承过热,检查并清洗轴承体,加润滑油,校正两轴的同心度在同一中心线上。

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