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Dynamic Analysis of a Bladed Balance Ring Device

[+] Author Affiliations
Leonardo Urbiola-Soto, Marcelo Lopez-Parra

Universidad Nacional Autonoma de Mexico (UNAM), Queretaro, QUE, Mexico

Francisco Cuenca-Jimenez

Universidad Nacional Autonoma de Mexico (UNAM), Mexico, D.F., Mexico

Paper No. ESDA2012-82102, pp. 639-649; 11 pages
doi:10.1115/ESDA2012-82102
From:
  • ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 1: Advanced Computational Mechanics; Advanced Simulation-Based Engineering Sciences; Virtual and Augmented Reality; Applied Solid Mechanics and Material Processing; Dynamical Systems and Control
  • Nantes, France, July 2–4, 2012
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4484-7
  • Copyright © 2012 by ASME

abstract

Among the solutions to the rotor unbalance problem, the previous art shows the use of passive balancers. The liquid balance ring fall in this category, which basically consists of a hollow ring equipped with a number of anti-sloshing baffle boards inside the cavity. The liquid contained within the ring adopts an antagonist position to the unbalance, thus balancing the rotor. Nowadays, in regard to the shape of the baffles boards employed in liquid balance ring devices, the use of straight baffles is the standard practice. However, as the fluid is subjected to rotation, it makes sense to believe that there should be a better baffle shape to enhance the fluid-solid interaction and improve the balance ring dynamic performance. This research work introduces for the first time a balance ring with curved (forward and backward) blades that remarkably enhance the unbalance response of rotors in the transient and steady-state. A classical dynamics model of this novel bladed concept is introduced and employed in designing a liquid balance ring for high-speed performance. Experimental data showing good correlation between the model and tests is presented.

Copyright © 2012 by ASME

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