Use of diaphragm couplings
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1. How many years does it take for a diaphragm coupling to need replacement during its operational life? 2. Does a diaphragm coupling with a long operating time affect rotor balance? 3. What equipment is used to measure the level of fatigue? 4. Can it be repaired and used after deformation? 5. How is the speed range for using diaphragm couplings determined?
Reference can be made to the standard JB/T 9147-1999 for diaphragm couplings. The advantage of such couplings is that they are easy to disassemble, which facilitates the maintenance of motors or machines without the need to align both of them； Such couplings have a good self-adjusting effect
1. It should be related to the usage pattern, not necessarily based on time. 2. The axial distance is properly controlled, so the impact should be minimal. 3. Not known yet. 4. It probably cannot be used. 5. The J1MJ11 we use has a permitted speed of 2000 revolutions per minute per the standards, but the actual speed is 4200 revolutions per minute.
Does diaphragm deformation or rupture have an impact on vibration during operation? 5000 revolutions
Diaphragm deformation or rupture can have an impact on vibrations during operation
The components of diaphragm couplings that are prone to damage are usually the diaphragm and the bolts. If any damage is detected in the diaphragm or bolts during use, they should be replaced promptly. Of course, there are methods available for conducting non-destructive testing and dimensional checks on these vulnerable components!
It’s very difficult to detect fatigue problems using equipment; even if it’s possible to do so, it can only be done after the component has been damaged!
I haven’t seen any quantitative analysis data on these issues for use in actual operations.