Reasons for coupling diaphragm failure
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The unit vibration is within the acceptable limits; the diaphragm of the coupling is broken. What could be the possible causes?
How long has it been in use? Is it worn out?
The unit alignment is poor; there are issues with determining the positive value
One day before the disassembly, the instantaneous value of the generator shaft vibration exceeded the limit three times, and abnormal noises were heard. Could the rupture of the diaphragm be due to an increased amount of movement in the motor?
Poor alignment, fatigue fracture, unstable operating conditions
It is most likely a alignment issue. How long has the diaphragm been in use? If it hasn’t been long, then it’s necessary to check the quality of the diaphragm.
How can we analyze the reasons from the perspective of the torque exerted on the diaphragm?
How to analyze it from the perspective of the torque exerted on the diaphragm?
Fatigue fracture, unstable operating conditions, frequent startups.
Check the coupling alignment, or use the shaft-lifting method to examine the quality of the bearings