Investigation into operation dynamics of a downhole eccentric-type vibration source

Challenges for Development in Mining Science and Mining Industry

Savchenko, A.V.^1 ; Tsupov, M.N.^1 ; Evstigneev, D.S.^1

Chinakal Institute of Mining, Siberian Branch, Russian Academy of Sciences, Novosibirsk, Russia^1

关键词: Amplitude frequency characteristics;    Eccentric types;    Laboratory test;    Low frequency range;    Operation dynamics;    Rotation frequencies;    Shaft rotation;    Vibration sources;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/262/1/012060/pdf
DOI  :  10.1088/1755-1315/262/1/012060

来源: IOP

【 摘 要 】

Wave-type oscillations generated by a downhole unbalanced seismic source are studied on the laboratory test stand. The mode of source operation with an inner chamber filled with a fluid is investigated at shaft rotation frequency ranged from 3 to 8 Hz. The difference of rotation frequencies of vibration source and magnetic field of asynchronous motor stator is determined. The amplitude-frequency characteristic of the vibration source in the low-frequency range is obtained.