Open AccessApplication of diagnostics-in-place for determining technical condition of turbo-gear unit reduction gear of Sevmorput LASH carrier
Author(s) -
Konstantin Olegovich Sergeev,
T. M. Volkova
Publication year - 2020
Publication title -
vestnik astrahanskogo gosudarstvennogo tehničeskogo universiteta. seriâ: morskaâ tehnika i tehnologiâ
Language(s) - English
Resource type - Journals
eISSN - 2225-0352
pISSN - 2073-1574
DOI - 10.24143/2073-1574-2020-2-7-14
Subject(s) - vibration , bearing (navigation) , reduction (mathematics) , acoustics , octave band , turbo generator , power (physics) , engineering , mechanical engineering , automotive engineering , computer science , octave (electronics) , mathematics , physics , geometry , quantum mechanics , artificial intelligence
The article discusses the results of diagnostics-in-place of the reduction gear of the main turbo-gear unit (MTGU) of the Sevmorput LASH carrier. The main characteristics and a brief description of the MTGU design are given. The constructive arrangement of the MTGU project684 OM5 has been illustrated. There are substantiated the methods that can be used for diagnostics-in-place of the turbo-gear units: monitoring vibration levels on bearing housings and comparing them with the results of the previous measurement, comparing the third-octave vibration velocity spectra in the frequency band up to 500 Hz between the power flows of the sides and with the norms of the Russian Maritime Register of Shipping, monitoring the temperature of the bearing assemblies of the gearbox, etc. Choosing the in-situ diagnosis method for the MTGU is determined by the specific features of its design. The diagnostics results are provided. Vibration control was carried out twice: in 1995, on sea trials, and in 2006, during a ship’s voyage to the port of Dudinka under normal running conditions. It was noted that the difference in vibration levels is insignificant; the scatter of values in 2006 appears smaller than in 1995. Changes in the values of temperatures and vibration levels of bearing assemblies during measurement in 2006 were caused by different power modes, compared to measurement made in 1995. The MTGU project 684 OM5 has been approved for further operation after agreeing on the measurement results with the manufacturer of Kirovsky Zavod Production Association. It has been inferred that determining the technical condition of such complex objects by methods of diagnostics-in-place is possible.