Engine & Turbine Technology
Vibration analysis: save time, money and your reputation
El Dr. Steve Lacey describe cómo la comprobación del funcionamiento de los reductores de las turbinas eólicas puede ayudar a identifi car problemas potenciales relacionados con los engranajes o con los rodamientos antes de la instalación, ahorrando al cliente gran cantidad de problemas.
Dr. Steve Lacey beschreibt, wie Betriebstests von Windturbinengetrieben zur Erkennung potentieller getriebe- oder lagerspezifi scher Probleme vor dem Einbau beitragen und dem Kunden so viel Ärger ersparen können.
Dr Steve Lacey describes how the operational testing of wind turbine gearboxes can help to identify potential gear- or bearing-related problems prior to installation, saving the customer a great deal of trouble.
V
ibration-based condition monitoring (CM) is a well- established technique for monitoring the mechanical condition of the wind
turbine drivetrain (i.e. rotor, gearbox and generator). CM tools are commonly used for the early detection of faults and failures in order to minimise downtime and maximise productivity. In the case of wind turbines, vibration monitoring can be used to assess the condition of drivetrain components prior to installing these on the wind turbine. Rolling element bearings are manufactured to high accuracy and great care is taken over the geometrical accuracy, form and surface fi nish of the rolling surfaces. It is therefore important that all associated bearing components such as shafts, housings and spacers are all manufactured to high standards. In addition, assembling the bearings and associated components in a clean,
controlled environment using the correct tools is critical. Failure to do so can seriously compromise the performance and reliability of the bearing in service.
Damage during assembly Assembly of large gearboxes is a skilled task and so it is not uncommon to fi nd that some damage has been introduced to the bearing rolling surfaces during the assembly process. While it is easy to introduce damage, detecting it is almost impossible without conducting some form of operational test. Operational tests typically involve
running the gearbox on a purpose-built test stand under a range of operating conditions. In some cases, only operating temperatures may be measured in order to quality assure the gearbox, but often this is not suffi cient and any damage to the bearing rolling surfaces may go undetected.
Rolling element bearings are manufactured to high accuracy and great care is taken over the geometrical accuracy, form and surface fi nish of the rolling surfaces. All components must be manufactured to high standards.
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