Établie au Québec, Canada, depuis 1986, VibroSystM est un fabricant de renommée mondiale dans le domaine des systèmes de surveillance de l’état de grandes machines tournantes. Avec d’importants clients internationaux et des équipements installés dans plus de 75 pays, la croissance continue de VibroSystM est basée sur une expertise à la fine pointe de la technologie.
Our story:
Established since 1986 in Québec, Canada, VibroSystM is a leading world-renowned manufacturer of condition monitoring systems for large rotating machines. With international key customers and equipment installed in over 75 countries, VibroSystM’s continuing growth is based on state-of-the-art expertise.
El calentamiento del estator transmite la temperatura al rotor y el rotor al eje, lo que provoca una expansión axial del eje, dañando los soportes, rodamiento plano o de elementos rodantes lo que incluso puede derivar en una falla catastrófica.
thank you for sharing this important case but i am wondering about the too long period almost five years (2011 -2016)and still the problem is unsolved if the data was being analyzed by you why haven't you identified exactly where the repair should be ? further I am wondering if along these five years the level of vibration have affected the in slot portion thanks
@@VibroSystM Hi! Good to see you again! I would love to watch more content related to vibrations at mining industry, such as ball mills specially, SAG mills, flotation cells, conveyor belts, pumps (and their misalignments). What may contribute the most with vibration reduction in the case of mills? Gears condition, shafts misalignments, electrical engine electromagnetic field disalignement... Thank you once again, Sir!
@@Jeff-es1yr Thank you for your interest! I sent your message to André and our reps that can answer you better. If you have any other comments, feel free and if there is content that you prefer like 1 hour Q&A's or short videos, let us know!
@@Jeff-es1yr If I understand correctly, your question is what would help reduce the vibration levels the most. As I’m sure you know, vibration in large rotating machines is primarily caused by mechanical or electromagnetic sources. I say primarily because, to some extent, heat can also play an important role, albeit indirectly. In addition, the fact that mills are horizontal, gravity also has a role to play in the behavior. The mechanical concerns are as follows : - Energy provided by the motors in gear-driven mills. This is especially true in cases of misalignment or speed issues. - Issues with uneven oil film distribution at the bearings are also sources of mechanical vibration. - Obviously, the movement of ore and balls contribute tremendously to the vibration, however; this vibration is somewhat asynchronous, therefore; difficult to assess. - Problematic stator frame to the stator core structure, causing looseness of the core. - Significantly elliptical stator shape, which is quite common in SAG and Ball mills. The electromagnetic concerns are as follows : - Uneven magnetic field distribution between the rotor and the stator. - Shorted turns in rotor poles. - End-winding looseness caused by defective, or worn-out attachment systems. - Axial misalignment between the rotor and stator. These are the main sources of vibration however, many other combinations exist as well. I hope this answers your question. Please do not hesitate to contact us if you have any other queries.
If you want the presentation that we showed in this video, go to this link: s3.amazonaws.com/library.vibrosystm.com/Q%26A+7+Hydroelectric+Generators+Monitoring+.pdf
During this Q&A session (37m32s), a participant asked if VibroSystM was considering the Cloud as a possible option for its solutions. The provided answer was aligned with legacy VibroSystM solutions. However, it is worth adding that VibroSystM is in the process of transitioning from current Zoom-based solutions to its next-generation systems. Simon Ethier, Director of Product Development at VibroSystM, provided us with complementary information: In contrast to current offering, next generation systems will fully take advantage of the cloud to improve the end-user experience, enforce state-of-the-art security, facilitate data access, and promote enhanced services to VibroSystM customers. Cloud data storage, advanced alarm management, assisted monitoring and scheduled diagnostics are examples of such services. VibroSystM will further be in a position to promote prediction analysis and machine learning capabilities based on historical data and VibroSystM’s extensive test and diagnostic expertise. It is also part of VibroSystM’s strategy to transition existing customers so they can also benefit from VibroSystM Cloud capabilities. Please do not hesitate to comment or to contact us at sales@vibrosystm.com to learn more about our forthcoming solutions.
If you want the presentation that André showed at the end, you can find it here: s3.amazonaws.com/library.vibrosystm.com/Stator+Insulation+Deterioration+presentation.pdf
Thank you for attending our Q&A! If you have any questions, please comment here, We will be happy to answer them during our next Q&A. Also, if another time slot would be more convenient for you, please tell us in the comments. We will do our best to suit your schedule. See you on August 27!
A magnetic unbalance is detected when the rotor is energized (excitation on), or when the excitation is removed (during a shutdown or a load rejection). The moment the rotor is energized, it will suddenly move towards the location where the smallest air gap exists. During a shutdown, or a load rejection (where the excitation is removed), the rotor will move away from the location where the smallest air gap exists (magnetic center) and return suddenly to its original position (mechanical center). To detect this problem, air gap sensors and shaft displacement probes are used
