Method of controlling the dynamic stiffness of the electric motor — pump frame — foundation system by installing dynamic dampers
Authors: Zinin V.A., Pavlov D.A., Zhukov I.E.
Published in issue: #12(168)/2025
Category: Mechanics | Chapter: Theoretical Mchanics, Machine Dynamics
The study is devoted to solving the problem of increased vibration of pumping units installed as part of process equipment on block-pontoons of the Yamburg oil and gas condensate field. The relevance of the study is due to frequent cases of resonant vibrations of equipment associated with the design features of pontoons that play the role of a foundation. The paper proposes a method for controlling the dynamic rigidity of the “electric motor-frame-foundation” system by installing cantilever dampers. The aim of the study is to reduce the vibration activity of equipment without modifying the foundation design. The method is based on the analysis of the natural frequencies of the system and the introduction of an additional oscillatory circuit, the resonant frequency of which is adjusted individually for each case. It has been experimentally confirmed that the installation of a damper with a mass of 0.5–3% of the weight of the electric motor reduces the vibration velocity level by 3–10 times. The results of the work can be used to reduce vibration of equipment on low-rigidity foundations.
EDN FOPFMI
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