February 2020

Valves, Pumps and Turbomachinery

Reveal the unmonitored risks in your rotating equipment: The effects of torsional vibration—Part 2

In recent case studies, unexpected and unmonitored torsional vibration resulted in sudden failures, costly downtime and potential safety hazards. Part 1 of this article, which appeared in the January issue of Hydrocarbon Processing, examined the origins of torsional vibration and case histories to drive an understanding of the unmonitored risk existing at many industrial sites.

O’Connor, D., Gutierrez, J., Bently Nevada, a Baker Hughes Business

In recent case studies, unexpected and unmonitored torsional vibration resulted in sudden failures, costly downtime and potential safety hazards. Part 1 of this article, which appeared in the January issue of Hydrocarbon Processing, examined the origins of torsional vibration and case histories to drive an understanding of the unmonitored risk existing at many industrial sites. Application 1: Variable frequency drives Motor compressor trains with attached variable frequency drives (VFDs) are becoming increasingly popular with original equipment manufacturers (OEMs) and end users in the oil and gas, power generation and processing industries. Since speed is directly proportional to frequenc

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