Video není dostupné.
Omlouváme se.
Part 41 - Vibration Analysis - Condition Monitoring in Rotating Equipment
Vložit
- čas přidán 18. 03. 2024
- About the presenter:
• Recipient of the ASME Burt L. Newkirk Award.
• Recipient of the ASME Turbo Expo Best Paper Award (Structures and Dynamics Committee).
• Recipient of the Best Paper Award from International Rotor Dynamics Conference - IFToMM.
• Recipient of the ASME IGTI Young Engineer Award.
• Ph.D.
• American (US citizen)
• Email: rotordynamics101@gmail.com
• LinkedIn: / rotordynamics
• Twitter: / rotordynamics1
Your support means everything to us. If you find value in our videos, please consider sharing them with someone who would benefit. Thank you so much!
Thanks for this informative video. This is probably the best that I have seen on the subject. Thanks once again
You're welcome! I'm glad you found the video informative and helpful. Your kind words mean a lot. If you have any more questions or need further information, feel free to ask. Thanks again for your support!
Very concise and informative. It is a great introduction to the topic.
Thank you for your kind words! I'm glad you found the information concise and informative. If you have any more questions or need further details, feel free to ask!
Loose bolting & soft foot on motors can give high amplitude at twice line frequency and at slip frequency.
You are absolutely correct. Loose bolting and soft foot conditions can indeed lead to high amplitude vibrations at times. Thank you for your feedback!
Excellent
Thank you!
thanks, it's useful for me
Thank you for your feedback! I'm glad you found the video useful. If you think it could benefit your colleagues and engineering friends, please consider sharing it with them. Sharing knowledge helps us all grow together!
In case of bowing we also observe continuous phase change as described in Newkirk / Morton effect
Yes and it should move in same direction as rotation, whereas for a seal rub causing bowing phase change goes against rotation as explained by the great late Prof den Hartog in his book "Mechanical Vibrations".
@@MrFRANKOK you are right. Phase rotation is different in both cases. I have seen both of them happening at different compressors in our plant. Thank you for sharing the reference of the book, I will definitely check.
Based on what the balancing grade for the rotor is chosen as per ISO and API system can you explain like when we need to go with 1plane 2 plane multiplane wrt grade system ? simply what is the deciding factor of balancing grade and number of balancing planes while doing balancing on the rotor ?
Excellent inquiry! The choice of balancing grade is indeed contingent upon the specific requirements of the machine being designed. For high-end, long-lasting machines where reliability is paramount, opting for a tighter balancing grade is often preferred. In numerous cases, a G2.5 grade strikes the right balance between precision and cost-effectiveness.
Additionally, I recommend referencing Part 24 video for further insight into distinguishing between rigid and flexible rotors. Understanding this distinction is crucial as it significantly impacts the balancing process. Rigid rotors, typical in simpler machines, generally follow a more straightforward balancing procedure. Conversely, flexible rotors necessitate a more intricate technical evaluation to achieve optimal balance. Thank you for raising this pertinent point!
Believe thermal bowing due to Morton effect using a sleeve was patented. Patent may have expired hopefully.
Thanks for sharing that information! :)
Thank you very much for the video, it is excellent as always! How do I get the time response and orbit of the rotor (at 3:14 in this video)?
Thank you so much for your kind words! I'm glad you found the video helpful. To get the time response and orbit of the rotor at 3:14 in the video, you can use two displacement probes (such as Bently Nevada's Proximity Sensor - 3300 XL Proximitor Sensor) and record the signal from the DAQ (Data Acquisition Systems). I'll also consider making a dedicated tutorial on this topic in the future to provide more detailed guidance. Stay tuned for updates, and feel free to ask if you have any further questions!