| The different versions of mechanical energy transfer systems, the loss in performance of the gear and the climatical and environmental conditions have an influence to be considered for the general conception of the lubrication system.
A 100% reliability of the lubrication system under all operation states can only be achieved, if well-proved components which are known in their detailed function are combined to a system.
To consider the minimum of cost of the lubrication system in the foreground and to choose components whose special system function is not experimentally proved, would cause the risk of failure cost which are in an unjustifiable proportion to the surplus price of a properly running system.
In cooperation with various projects of wind power plants, the gear manufacturer Eickhoff, t he pump manufacturer Rickmeier and the cooler manufacturer ASA-Hydraulik, the company INTERNORMEN developed a coordinated conception for the lubrication system of gears in wind power plants.
Uncomplicated components from the manufacturers` standard range which are properly running and easy-to-service are the essantial factors for a reliable function of the system and a quick service to be maintained long-term.
The lubrication system developed by INTERNORMEN and coordinated with the users and before-mentioned cooperating partners has proved its general functionality by special experiments. Cold start conditions down to -20°C (-4°F) ambient temperature were simulated, and the special gear oil was used.
The oil cross-flow of the air-oil-cooler cooled down to -20°C (-4°F) could be achieved after 2 minutes. The time until an evident increase of temperature T7 at the cooler outlet, respectivlely until an oil cross-flow QK of about 20 % of the total flow Q in the range of set pressures from 6 to 12 bar (87 to 174 psi) and from 10 to 2 minutes could be influenced by an adjustable pressure difference valve VD3.
All system components such as the pump, the filter, the valve system of the filters as well as the tube system worked properly from the cold start up to the maximum temperature of 70°C (158 °F) without any negative effects on the total function of the oil supply to the gear.
At any time the oil flow Q was filtered 100 %, and the oil flow was conducted in full extent - except of the deaeration flow Q5 - through the main element HS, filter fineness 10 µm glass fibre fleece at oil viscosities < 1000 mm²/s (< 4635 sus). To indicate the respective states of operation INTERNORMEN offers electric, electronic and visual pressure difference indicators which are connected with the filter without any tubes.
|
Products 
