LUBRICANTS
ADVANCED WIND TURBINE GEARBOX FILTRATION AND CONDITION MONITORING SYSTEMS
Our regular lubricants feature continues to grow and therefore proves how important the subject area is to the industry.
We welcome Hydac as our sponsors for the next year and they start us off with information on advanced filtration and condition monitoring, thus ensuring gearbox health.
Ensuring gearbox health and avoidance of early failures with advanced filtration and condition monitoring system upgrade kits
A wind turbine gearbox is one of the most important components of a wind turbine. The cost of changing a gearbox after a bearing failure can easily add up to £100,000 and more, which can threaten the economic success of operating a wind turbine. So protecting the gearbox with a state-of-the-art lube and filtration system is a key factor to a reliable and profitable operation.
UPGRADES TO HIGH PERFORMANCE FILTRATION
For more than 15 years HYDAC have been and still are the leading supplier of lube systems and filtration for wind. Based on the experience in this application and on testing and R&D studies, the filtration concepts and products were optimised for the wind application in several steps.
This helps maintain oil cleanliness during the whole installation time of the filter element. The differential pressure remains lower for the lifetime of the filter.
This reduces the amount of time with open filter bypass and without full filtration.
Also many older wind
This resulted in the most recent filter element series BN4HX which is used for new wind turbine gearbox installations.
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www.windenergynetwork.co.uk
turbine gearbox designs can be converted to BN4HX filter elements to achieve full protection for the gearbox using this most recent technology. This includes the recommendable 2-stage design where a 50µm filter provides a minimum filtration
The BN4HX elements have an increased dirt holding capacity, high beta ratios and a low differential pressure at high flow rates and high viscosity lubricants.
for situations with open filter bypass. Analyses of used filters have shown that the 50µm stage was helpful because large contaminants, ≥100µm, were found and were removed by the 50µm-stage. Without the 50µm stage these would have been delivered to the lube contacts in the gearbox.
FILTER SIZE EXTENSION KITS There are various options available, such as larger filters with the same pore size, providing more filter life-time; these have the potential to reduce the annual filtration cost. Also there are upgrade kits with higher micron ratings providing a higher cleanliness level or special filter media for removal of non-solid contaminants. There is a 3-stage-filter option which has an additional stage with partial flow to combine a filter element with low differential pressure and very fine filtration in the partial flow situation.
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