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[". 출수 전동 밸브 부드 문제

2019-08-15View Original

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一台中开离心泵 流量360扬程90m 介质清水,平时电流300A 一次停机后再开只有180A。检查水泵没问题,进水阀是蝶阀没问题,止回阀阀板都取了,应该是出水阀门掉板,送不出水。手动开出水电动阀,泵会反转。而且开这个出水闸阀的时候,填料处漏水,说明阀板是能打开一点的,为什么闸阀门出现掉板的情况,还能开一点点呢?如果阀门没掉板,为什么开泵又送不出水。。。
Reply #22019-08-15
这是闸阀阀杆腐蚀严重时的典型现象,这是因为,新的闸阀(一般讲双闸板),阀杆端部有个大头,这个大头的厚度,也制约了两个闸板的最小宽度,而腐蚀以后变窄,所以盘根部位泄露严重,全部开启后因为受到闸板另一端密封面的制约,一般泄露较小。也就是说,没开或者开了一小部分,闸阀是会泄露的,也许泄露更厉害
Reply #32019-08-15
出水电动阀,泵反转怎么回事?
Reply #42019-08-15
因为和另外一台泵并联,出水电动阀开一点点就反转,止回阀是坏的,阀板掉了以后被我们取掉了。
Reply #52019-08-15
问题是为什么只能开一点点。。情况是这个闸阀应该掉板了,他为什么能开一点点不能全开。这个泄漏的现象是说明闸阀开了一点,但是开泵完全没流量。
Reply #62019-08-16
泄露不能说明开了,闸阀要旋转很大距离,闸板才能到达开启位置,开不开是因为阀杆腐蚀严重所致,拿下来焊接好可以再用,没问题。

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