Perform dynamic balancing on the impeller?
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For a single-stage impeller, is it possible to achieve dynamic balancing when D/b is greater than 6 on the machine?
It’s possible to do that; remove duplicates and work on both the wheel and impeller surfaces
According to API610, 8th edition: 1. For single-stage and two-stage pumps with a rotational speed of less than 1800 rpm, static balancing is sufficient, regardless of whether the D/b ratio is greater than or less than 6. If dynamic balancing is required, it is necessary to ensure that D/b＜6. 2. When the rotational speed is ≥ 1800 rpm, if D/b ≥ 6, static balancing alone is sufficient. However, the remaining unbalance after balancing must be equal to or less than 1/2 of the allowable unbalance. If dynamic balancing is required, it is necessary to check whether the balance of the two correction surfaces can be achieved separately on a balancing machine; if not, only static balancing can be performed.
Currently, the standards only mention single-sided balance and double-sided balance – are both considered dynamic balance? How are dynamic balance and static balance defined? What are the standards for the static balance of impellers? Can G2.5 be achieved?
The rotation speed for our dynamic balancing is 700 revolutions
When D/b is greater than 6, what do D and b represent?
D: Rotor diameter; b: Distance between the two opposite faces of the rotor