What are the types of failures in centrifugal compressors and how to resolve them?
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What are the common types of failures in centrifugal compressors? What should the system do if a compressor fails during normal operation? I hope the experts can offer some guidance.
Personally, I think the question posed by the original poster is a bit vague. First of all, there are many types of centrifugal compressors, so it would be necessary to specify which type of compressor is being referred to. The fault diagnosis methods for different types of compressors vary. Let me start by laying the foundation and discussing the types of centrifugal compressors. Classified by exhaust pressure: low, medium, high, and ultra-high pressure compressors. Classified by power: micro, small, medium, and large capacity compressors. Classified by the flow rate of the inlet gas: low, medium, and high flow rate compressors. Classified by structural features: horizontally split type and vertically split type compressors
First, let’s talk about common faults. The failures I have encountered with centrifugal compressors include the following: 1. The compressor does not meet the required performance standards. 2. Insufficient flow rate and discharge pressure from the compressor. 3. Fluctuations in discharge pressure. 4. Zero flow rate and pressure when the compressor starts up. 5. Decreased flow rate. 6. High gas temperature. 7. Abnormal vibration and noise from the compressor. 8. Compressor surging. 9. Abnormal noises coming from the machine. 10. Air leakage from the compressor. 11. Bearing failures. 12. Thrust bearing failures. 13. Increased bearing temperature. 14. Alarms indicating increased shaft displacement. 15. Failures in the oil seal rings. 16. Unstable or abnormal operation of the sealing system. 17. Damage to the compressor impeller. 18. Abnormal noises from the gear drive. 19. Increased gear vibration. 20. Poor lubrication of the gears. 21. Decreased lubricating oil pressure. 22. Severe fluctuations in oil pressure. 23. High oil temperature after passing through the oil cooler. 24. Vibration, heating, or noise from the main oil pump. 25. Increased oil temperature. 26. Degraded lubricating oil. 27. Sudden decrease in the amount of lubricating oil. 28. Overload of the prime mover
Different faults require different approaches to handling, and even the same fault can have various causes, which in turn leads to many possible solutions. I hope the original poster will find this useful