OIL PUMPS

What is the reason for the small amount of heavy oil pumped

Source:未知 Time:2021-07-01 09:46
What is the reason for the small amount of heavy oil pumped out?
Many oil pump manufacturers are studying this problem. The following points are summarized:
 
(1) the pump after starting the fault phenomenon, the motor three-phase current is normal, in the power supply voltage is no problem, the pump does not oil or a small amount of oil.
2. Check and analyze
 
1) In the test of the newly installed electric pump, the pump has no oil or a small amount of oil.
May be the pump to the contrary, any two phase cable phase sequence exchange, can solve: or Yang cheng after the end of the larger pump: in addition, the pipe connection flange oil leakage, tubing rupture will affect the pump out of the oil.
 
2) normal use of NYP pump, oil volume decreases, the pump can be serious wear seal ring after long-term use, should be replaced: in the pump suction plug, affect the oil intake, clean the pump grille or filter.
 
3) the cast aluminum rotor of the motor is broken, and the cast copper rotor end ring is welded, which leads to the output power of the motor is not enough, the speed drops, and the oil output of the oil pump is insufficient. The rotor should be replaced or welded.
 
4) In the normal operation of the motor, but the three-phase current is small, then the pump does not oil.
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