Can you guys help me analyze the reason?
Thread Content
There is a vibration value at the rear end of the high-pressure cylinder of the centrifugal carbon dioxide compressor that is opposite to the fluctuation trend of the four-stage outlet flow. Specifically: when the vibration value decreases, the flow rate increases, and when the vibration value increases, the flow rate decreases. I don’t know whether the vibration value affects the flow rate or the flow rate affects the vibration value. Can you guys help me analyze it.
Although I want to help you, I don’t really understand
It is difficult to analyze from these two trends alone that vibration or displacement has an impact on flow, inlet and outlet pressure, speed, etc.
The flow affects the vibration value, is it surge?
How much is the opening of the anti-surge valve? Is there any abnormal sound or vibration caused by fluctuations on site? If 80% of the cases are surges, check the inlet flow pressure of each section, especially section 4, and increase it appropriately. Open the anti-surge valve appropriately, reduce the speed appropriately within the allowable range, and then increase the speed when normal.