What should you do if a centrifugal compressor malfunctions? This article provides the answer!
2024-02-29
Centrifugal compressor failures and troubleshooting methods are as follows
As a common compression equipment in industrial fields, the operation failures and processing methods of centrifugal compressors are crucial. The following details the possible failures and their processing methods of centrifugal compressors, so that operators can find problems and deal with them effectively in time.
I. Impeller damage: As the core component of the centrifugal compressor, the impeller undertakes the task of gas compression. If the impeller is damaged, it will affect the normal operation of the compressor. When checking the impeller, pay attention to the wear and tear, cracks, etc. of the impeller. If necessary, repair or replace it to ensure the stable operation of the compressor.
II. Abnormal bearings: Bearings are the key components supporting the normal operation of the impeller. If the bearings fail, it may cause the compressor to run unstably. When abnormal bearings are found, the wear and lubrication of the bearings should be checked, and the clearance should be adjusted. If the bearing is severely damaged, it needs to be repaired or replaced.
III. Coupling failure or imbalance: The coupling connects the impeller and the motor. If the coupling fails or is unbalanced, it may cause the compressor to vibrate more intensely. When checking the coupling, pay attention to the balance of the coupling, check whether the coupling bolts and nuts are tightened, and repair or replace them if necessary.
IV. Poor sealing ring: The sealing ring is an important component to prevent gas leakage. If the sealing ring gap is too large or damaged, it may cause gas leakage. When checking the sealing ring, its gap should be measured, and it should be repaired or replaced if necessary.
V. Abnormal oil pressure and oil temperature: Oil pressure and oil temperature are crucial to the operation of the compressor. If the oil pressure and oil temperature are abnormal, it may cause bearing wear and poor lubrication. Check the oil pressure, oil temperature and oil system operation at each oil injection point, and adjust them in time if any abnormality is found to ensure the normal operation of the compressor.
VI. Dirt and unclean oil cause bearing wear: Oil contamination may cause bearing wear and affect the compressor's lifespan. Identify the source of the dirt, change the oil regularly, add a filter, and ensure the oil is clean. At the same time, check the bearings and adjust the clearance.
VII. Surge: Surge is a phenomenon unique to centrifugal compressors. If not handled properly, it may cause equipment damage. Check whether the compressor is far away from the surge point during operation, whether the surge margin is correct, and whether the surge protection device is working properly.
VIII. Stress from gas pipelines transmitted to the casing, causing misalignment: Stress from gas pipelines may cause deformation of the compressor casing, affecting the stability of equipment operation. Check the stress of the gas pipeline and take corresponding measures to adjust it.
IX. Excessive clearance: During installation, if the installer's training is inadequate and the installation accuracy detection deviation is large, it may cause excessive clearance in the unit installation. Installer training should be strengthened, and installation should be carried out strictly according to the instructions to ensure that the clearance is within the specified range.
X. Unit surge: Insufficient intake flow, insufficient intake valve opening, too dirty or icy intake filter element, blocked intake passage, reduced or cut off intake source, and too large opening of the intake pressure relief valve may all lead to insufficient intake flow of the unit. The intake valve opening should be adjusted, the intake filter should be cleaned, the intake passage should be cleared, the intake source should be kept stable, and the intake pressure relief valve opening should be adjusted appropriately to keep the unit's intake flow stable.
The above information is for reference only. If you encounter problems, it is recommended to consult professionals or refer to professional books. In actual operation, according to the specific situation, failures should be found and handled in time to ensure the stable operation of the centrifugal compressor. At the same time, strengthen the daily maintenance and management of equipment, improve the skill level of operators, and reduce the probability of failures.
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