The article considers and analyzes various types of experimental equipment for power generating machines and aggregates. Based on the results of the analysis, a dynamic stand for the study of plain bearings is presented. An information and measurement system for ensuring the operation of a dynamic stand based on the software and hardware complex of the company "National Instruments"is proposed. The results of experimental studies of plain bearings used in power generating equipment are presented.
The paper briefly describes the current state of distributed energy systems, which acts as a leading supplier of electric and thermal energy to small cities, towns and villages, industrial enterprises, livestock farms, etc. The main working unit of this type of systems is low–power microturbine installations. For these types of installations, the most critical and critical part is the rotor–bearing assembly. The article discusses a dynamic two–mass model of a rotor–bearing assembly including a rotor and a thrust paddle bearing. The masses of the rotor and elastic elements are taken into account in the model, and the simulation results are given for harmonic and pulse excitation.
The article presents a study of the adhesion strength of film anti-friction coatings. The process of a film anti-friction coating formation is described. An experiment to determine the adhesion strength of a film anti-friction coating is considered. In the course of the experiment, a number of samples of different roughness were used on which an anti-friction coating was applied. The thickness of the coating was controlled by a thickness gauge. Conducted a qualitative assessment of the adhesive strength of the coating with the base metal. Conclusions about the strength of adhesion, its dependence on surface roughness and initial surface treatment are made.
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