Research into Correlation between the Lubrication Mode of Contact Surfaces and Dynamic Parameters of Turbo-Generator Transmissions

Abstract

e paper presents the results of an experimental study aimed at assessing the correlation between the measurement of dynamic parameters (vibration, high-frequency vibration, and acoustic emission) and the analysis of friction mode and the state of lubrication of the contact surfaces of two gearboxes in the turbo-generator assembly (high-speed single-body steam turbine-gearbox-generator) with the transmission power of no more than 50 MW. e analysis confirmed the assumption of a significant correlation of the monitored high-frequency vibration signal with the unsatisfactory engagement of the gear teeth.rough vibration analysis, an increased level of the tooth vibration component and vibration multiples with increased acoustic emission were identified in gearbox operation. e gear oil of one of the gearboxes examined showed a loss of additive elements in the real operation of the contact surfaces of the teeth engagement. e trend analysis confirmed the complexity of the monitored transmission operation in terms of the friction mode and the influence of the oil quality on the state of the tooth flank microgeometry.

Optimization Model of Vibrodiagnostic Maintenance of Turbogenerators

“…These factors affect the occurrence of vibrations and failures [16]. Vibration analysis is one of the techniques used in maintenance and is based on conditions, to monitor and analyze specific machines and equipment within technical systems [17][18][19][20]. Vibrodiagnostics is a support tool for ensuring the necessary reliability with the lowest possible cost of production, exploitation, and preventive maintenance [21].…”