Optimising Low Speed Dynamic Balancing of High Speed Rotors

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Optimising Low Speed Dynamic Balancing of High Speed Rotors

Journal Title: Jurnalul Stiintific TURBO - Year 2017, Vol 4, Issue 1

Abstract

The research conducted revealed some particularities of the rotors manufactured and/or assembled at INCD Turbomotoare COMOTI. Different phenomena were encountered, named, and described, using data recorded while dynamically balancing the rotors, like the phenomena where a rotor spins with progressively lower amplitude of vibration when increasing the rotation speed (named self-centering phenomena), to a point where the rotor stabilises, and the phenomena where the heavy point of a specific correction plane appears to move angularly while balancing at progressively increased speeds (phenomena usually encountered in the case of flexible rotors). The recorded data was used to create six graphs that give a clear image of a rotors’ behaviour on a specific range of speeds. After gathering a lot of experimental data, certain patterns emerged that helped formulate a balancing procedure based on these graphs. The procedure was tested successfully and it immensely reduced the time required for dynamic balancing with better results while operating in normal conditions (lower levels of measured vibration of the machinery), at the designed nominal speed.

Authors and Affiliations

Alexandru TUDORACHE, Robert ISAC, Emilian TOMA

Keywords

dynamic balancing high speed rotors.

EP ID EP268906
DOI -
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