The effect of flow rate on compressor vibration
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Logically, the greater the circulation rate, the greater the vibration should be. But why is it that for a certain period of time, within a specific range of circulation rates, an increase in circulation rate results in less vibration, while a decrease in circulation rate leads to more vibration?
It depends on the type of circulator you have – reciprocating or centrifugal – as well as how many units are operating in a single series. There is always an optimal range for anything; the load in chemical production is usually between 70% and 110%, with 105% generally considered to be the optimal operating load
It is a centrifugal compressor, not a reciprocating one
It’s a dynamic balance issue; it should be logical that higher gas density in the cycle leads to greater vibrations. This requires adjustments to factors such as load, bleed air, and driving power
The key is the matching issue; sometimes a high load is required to stabilize the rotor
How is your circulation volume adjusted? Don’t the components change during adjustment? :)
There could be several reasons for this: 1. A larger circulation rate actually leads to better dynamic balance, which in turn results in less vibration. For example, when we played with tops as children, they were more stable when spinning fast, but they swung more violently as they neared stopping. 2. The magnitude of the circulation volume is related to the components, and since the molecular masses of these components vary, a higher circulation volume sometimes indicates a higher concentration of component C in the circulating gas. This results in more uniform forces acting on the gas as it passes through the impeller, thereby reducing vibrations.