What should I do if the mechanical center of the high-voltage motor is inconsistent with the magnetic field center?

The inconsistency between the mechanical center and the magnetic field center of the high-voltage motor is a common problem in the daily operation of the motor. The so-called inconsistency between the mechanical center and the magnetic field center of the high-voltage motor means that when the high-voltage motor is running, its rotor will be positioned at the magnetic field center, and there is a mechanical center between the rotor main shaft and the two bearings (that is, the position where the distance between the shafts at both ends of the motor rotor and the distance between the bearings are equal). These two centers may be inconsistent during installation.

The following situations may occur: If this happens during installation, the axial spacing of the shafts is adjusted based on the mechanical center.

After the motor is installed and started, the rotor will automatically position itself at the center of the magnetic field, and the motor shaft is prone to axial movement, which will destroy the axial spacing adjusted during the original installation. When this deviation is not large, for the gear coupling, it can be compensated by the reserved axial clearance of the internal and external gear sleeves; if it exceeds the reserved axial clearance of the coupling, the coupling and the driven shaft will be subjected to an axial external force, causing end face friction of the components, generating heat and other harmful effects.

Based on the above problems, Litesimo Motor provides the following three solutions:

⑴ For the high-pressure Pump Motor rotor connected by a gear coupling, if the motor rotor axial movement occurs, the lift and shaft center of thehigh-pressure motor rotor should be considered first.

⑵ To deal with the clearance problem between the high-pressure motor rotor shaft shoulder and the bearing bush, the load end bearing bush clearance should be adjusted according to the motor speed and high-pressure pump characteristics to avoid the defects of the rotor shaft shoulder and the bearing contacting and rubbing, causing the bearing bush temperature to rise and causing impact.

⑶ Through the above-mentioned analysis of the cause of the axial movement of the high-pressure pump motor rotor, the magnetic center of the high-pressure motor of the middle plate high-pressure pump was adjusted, the rotor bearing stop was reprocessed, and finally the shaft system was aligned, which completely solved the problems of rotor movement of the middle plate high-pressure pump motor and abnormal vibration and temperature rise of the motor, and avoided the possible consequences of motor bore sweeping and burning due to damage to the sliding bearing.