Centrifugal pump takes place emptying phenomenon lead to failure analysis
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May 24 15:20:18, 2023
Evacuation is one of the many causes of a centrifugal pump failure when it occurs with the following conditions: a) The motor current drops. ②, the pressure fluctuated sharply. ③, abnormal fluctuations in traffic. ④, issued a different noise. ⑥, the pump vibration. ⑦, pump cylinder temperature increases. Evacuate the phenomenon of the reasons: ①, centrifugal pump leak occurred at the entrance. ②, blockage occurs at the inlet of the centrifugal pump. ③, the pressure at the entrance to the centrifugal pump is not enough. ④, centrifugal pump inlet temperature is too high saturated steam is too large. ⑤, centrifugal pump inlet valve is not open or spool off. ⑥, centrifugal pump outlet opening too large (small). ⑦, centrifugal pump seal with water. ⑧, centrifugal pump tower or container liquid level is low or no liquid level. ⑨, centrifugal impeller or wear the inner wear ring serious. ⑩, centrifugal pump motor reversal. The corresponding approach: ①, if the entrance leak, stop the pump should check the centrifugal pump inlet leakage and flange. ②, if the entrance is blocked, you should stop the pump to check the centrifugal pump inlet leakage and impeller, after purging for maintenance. ③, if the inlet pressure is not enough, you should increase the liquid back pressure. ④, if the inlet medium temperature is too high, you should reduce the medium temperature, the centrifugal pump to vent the steam row net. ⑤, if the inlet valve is not open or spool off, you should open the valve or pump for overhaul. ⑥, if the outlet opening is too large (small), you should make appropriate adjustments to the valve opening. ⑦, if the seal oil with water, the seal should be dehydrated oil tank. ⑧, if the liquid level in the tower or container is low, you should temporarily close the centrifugal pump outlet valve or stop the pump until the liquid level rise recovery. ⑨, if the impeller or inner wear ring, it should be timely replacement. ⑩, if the motor is reversed, you should promptly adjust the steering.