A transmission system torsional vibration damping method and its application

Abstract

The invention provides a transmission system torsional vibration reducing method and application thereof. The method is characterized in that a torsional vibration damper, which is a tuned rotary inertia damper, is added on a transmission shaft in a parallel connection manner, and the torsional rotation movement around the transmission shaft is used for reducing the vibration level of a certain first order torsional mode frequency. The method is flexible, can effectively reduce vibration without damage to the original structure of the transmission system, and can be used for later repair of the transmission system. The method can be applied to wind energy / tidal current energy generator sets; the torsional vibration damper is installed on a shaft, connected with a generator, of a high speed shaft coupler to greatly reduce a first-order mode component in the torsional vibration, so that a transmission system can operate more stably, the reliability of the structure can be improved and the service life can be prolonged.

Description

Technical field [0001] The invention relates to the technical field of mechanical vibration reduction, in particular to a torsional vibration reduction method of a transmission system and its application. Background technique [0002] For wind turbines and tidal current generators with gearbox transmission, the torsional vibration of the transmission system is dominated by the first-order modal frequency. Significantly reducing the first-order modal component in torsional vibration will make the transmission system run more smoothly, and the torsional fatigue load of each component will be smaller, which is beneficial to improve the reliability and life of the structure. [0003] At present, wind power generators and tidal current power generators use gearbox vibration damping supports to reduce vibration. Common technical solutions to reduce the torsional vibration of the transmission system in the automotive industry include driven disc type and dual-mass flywheel type torsional...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a transmission system torsional vibration damping method, which has strong flexibility and good vibration damping effect, and can significantly reduce vibration on the basis of not destroying the original structure of the transmission system, thereby overcoming the existing vibration damping method. Lack of inconvenient structure and late repair

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