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WIND TURBINES
by Key Account Manager
Thomas Møller Andersen |
SHORT DESCRIPTION OF THE APPLICATION
One of the fastest growing industries in the world today is the wind turbine industry. In 2001 more than 6.824 MW of new wind turbine capacity was installed world wide which is an increase of 52 % compared to 2000.
More than 75 % for all running wind turbines are constructed with a gear system containing 70-450 litres of lubricating gear oil.
THE TYPICAL PROBLEM CONCERNING THIS APPLICATION
The level of contamination in wind turbine gearboxes is often very high. On older turbines you do not find a filtration system on the wind turbine gearbox, which means that all the contamination buildup in the system, added with new oil or generated in the turbine, stays in the system and possibly damages the surfaces of the gearbox components thereby generating even more contamination (accelerated wear). In the new generation of wind turbines you often find an oil filter in the gear oil cooling system, but as the cooling system is dimensioned to keep the oil temperature low it is often not easy to find a filter with an acceptable efficiency. The recommenced level of contamination in a wind turbine gearbox is referred to as an ISO 17/15/12 but the contamination level is often higher.
More about:
Particle contamination
Water condensation
Oxidation of the oil
OIL TYPES
The oil types used in the wind turbine gearboxes are mainly very high viscosity gear oils. Mineral, semisynthetic and synthetic oils using an ISO VG 320.
Read more about Gear Oil
CJC SOLUTION
The Fine Filters C.C.JENSEN offers the wind turbine manufactures and the end users are the HDU 15/25 PV and the HDU 27/27 PV depending on the oil volume in the gearbox. As the viscosity of the oil is very high and the temperature of the oil can get very low the filter pump is constructed with a special by-pass valve tested down to minus 30°C with a ISO VG 320 cSt.
TEST RESULTS
C.C.JENSEN hold test results from more than 20 different sizes of turbines from a may different manufactures. With a CJC Off-line installed we promise an ISO 17/15/12 or lower - we even tend to se an ISO 15/12/10.
APPLICATION STUDIES
REFERENCES
C.C.JENSEN has by the spring of 2005 supplied more than 18000 filters to the wind turbine industry. Mainly supplied for the leading manufactures of the turbines:
Denmark
Bonus Energy A/S
NEG Micon A/S
Vestas Wind Systems A/S
Dan-Service ApS
DMP-Mølleservice ApS
Spain
IZAR Propulsión y Energía Turbinas S.L.
Gamesa Eólica
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Wind Turbines:
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 Slideshow
Wind Turbine Gear Oil
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