How to choose the field dynamic balancer
Rotor mass imbalance often produces excessive vibration and reduces the life of mechanical components. First, we define unbalance. When the center line of the rotor mass does not coincide with the center line of the rotating shaft, there will be unbalance. If unbalanced fault occurs in the equipment, we need to carry out field dynamic balance experiment on the equipment to eliminate the unbalanced component and reduce the vibration. At this time, we need a field dynamic balance instrument.
There are many brands of dynamic balancing instrument on the market. How do we choose a suitable dynamic balancing instrument? What are the reference indicators? In general, from the following to evaluate the dynamic balance meter:
1, measurement performance: working speed and accuracy range range and linearity, minimum resolution phase Angle tracking precision filtering characteristics is sharp enough system stability and repeatability?
2, the balance solution function: according to the test data to calculate what radius should be selected in the correction plane, what Angle with how much mass to significantly reduce the vibration of the rotor.
Example, one measurement point one correction plane dynamic balance. Two measurement points two correction planes and others. Dynamic balance of multiple measurement points and multiple correction planes. The number of measurement points is equal to the correction plane. The number of measurement points exceeds the correction plane. The number of measuring points is less than the correction plane.
3, time, frequency domain analysis function: not all the vibration can be eliminated by dynamic balance technology. When the vibration is more complex, it is necessary to understand the vibration time domain waveform and spectrum analysis. Only when the equipment is unbalanced, our dynamic balancer can calculate the radius, weight and Angle of the counterweight to eliminate the unbalanced component. The dynamic balancer with the function of standby time and frequency domain analysis undoubtedly provides convenience for the qualitative analysis of equipment faults, lays a solid foundation for the field dynamic balance, and avoids directional errors.
4, the structure of the symmetric double support rotor fast damping: both sides at the same direction at the same time, the balance to eliminate the force imbalance; Both sides at the same time in the opposite direction of the test, counterweight to eliminate the force couple imbalance. Both sides at the same time in different phases, with different weights, eliminate the unbalance with the couple. Can reduce the number of start and stop. When the original vibration is measured by the stored influence coefficient, the weight is counterbalanced. After the measurement and recording, the data is entered once for calculation. Counterweight synthesis and decomposition.
