surge
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Why does adjusting the speed of the compressor prevent surge when the compressor surges?
This is a concluding question, right? Can surge be eliminated by reducing the speed? How much lower? What's the principle? The general form of surge is because the outlet pressure is greater than the design capacity. If the speed is reduced, the pressure will also be reduced. But it will still be higher than the pressure generated by the relative speed. I don’t know how to eliminate the surge. Please give me some advice. Thank you!
A decrease in rotational speed is equivalent to an increase in flow rate, provided that the outlet pressure is not constant. If the outlet pressure remains unchanged, decreasing the rotational speed is ineffective.
The return line is generally called anti-flight in the oil refining unit, and the outlet returns to the inlet.
If the speed decreases, the flow rate should decrease.
surge phenomenon: The compressor inlet flow is low, causing the compressor outlet pressure to drop. However, the outlet pipeline and system capacity are large, and the pressure drops slowly, causing the compressor outlet management gas to flow back into the body. When the backflow reaches the machine body, the flow of the compressor is sufficient, the outlet pressure is higher than the pipeline, and the compressed gas is discharged. The above is repeated, causing the compressor to vibrate and causing serious damage to the compressor. Elimination measures: Increase the inlet flow, for example, open the outlet return inlet bypass to increase the inlet flow ； Or reduce the outlet pressure and torch the outlet
This sentence refers to the status of the compressor. I have been thinking about it for a long time and don’t know how to say it properly: lol