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2018-03-15View Original

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Reply #22018-03-15
user
Reply #32018-03-15
1
Reply #42018-03-15
user
Reply #52018-03-15
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Reply #62018-03-15
'utilisateur
Reply #72018-03-15
1
Reply #82018-03-15
MMdd
Reply #92018-03-16
'utilisateur
Reply #102018-03-16
1
Reply #112018-03-17
为了防止设置在出口的止回阀出故障不能关闭,从而造成介质倒流,离心泵倒转,物料倒流也会造成其他的工艺事故; \、当你停泵时不关出口阀门,如果突然断电,会导致止回阀突然冲击式的关闭,从而减少或损坏止回阀; 3、不关出口阀停泵属于带负荷停泵,会对电气方面形成冲击,不可取。 所以要在停泵前应逐渐关闭出口阀,使泵的负荷逐渐降至最低,停泵。
Reply #122018-03-18
应该关闭;防止出口单向阀不起作用,造成泵反向转动;因为该泵停止转动,没有了能量,此时备用泵运转或是后续管线中存在压力,造成泵反转;这样容易使泵的叶片螺母松动,损坏设备;也由于反向转动,对电机产生影响;
Reply #132018-03-19
正常停泵前必须关闭出口阀门, 防止介质回流冲击泵的过流部件(主要是叶片部位)导致叶片螺母松动,叶片脱落或者其他零部件损坏。

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