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2020-09-02View Original

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user
Reply #22020-09-02
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Reply #32020-09-02
son
Reply #42020-09-03
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Reply #52020-09-03
4년 6개월 동안 사용된 이중 흡입 펌프의 초과 유량 현상
Reply #62020-09-03
주파수 7.5의 모터의 정격 전류는 14.5이며, 펌프를 연결하고 배출 밸브를 열지 않으면 4.5회전 11.55,; 새 축을 돌리는 것도 부드럽습니다. 口环间隙也正常。这泵已经用了几周了,工艺流程没有改变,对中 0.5。电机绝缘没有问题也不缺相,换个电机也一样超流,今天又换了个泵的悬架总成也超。在不行就得换泵体了。。 有对电了解的的吗?电方面还有哪些可能存在的故障?
Reply #72020-09-03
是不是送到修理厂修理过电机了?
Reply #82020-09-03
是不是叶轮损坏,导致机泵效率降低引起的电流超标?
Reply #92020-09-03
如果叶轮损坏,出口关死应该不会高电流吧?
Reply #102020-09-03
没有,怀疑是电机,所以又找了个电机换上也不行
Reply #112020-09-04
关死阀门应该是低电流,就算叶轮损坏也不能到正常工况的电流吧。今天准备调一下别的电源试试。当时我也怀疑是不是泵体入口导流那小铁块磨损导致效率降低,但出口阀不开就要超流就不应该啊
Reply #122020-09-05
泵流量扬程是多少?出口压力是多少?在超电流之前和之后时间段内出口压力有没有变化?出口阀门关闭时压力有没有变化?
Reply #132020-09-08
电流高,说明做功多,流量大,首先判断出口压力是不是太低;再者就是是不是最近维修过,更换叶轮了?测量一下叶轮外径,是不是比原来的大了。

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