Wind turbine systems are ALLFETT central lubrications system's progressive system components developed suitable for wind turbines. Due to flexible design these systems will increase the life time and productivity of the equipment by easy maintanance and repair.
WORKING PRINCIPLE OF PROGRESSIVE SYSTEM
The lubricant coming from the pump is divided up by progressive feeders in defined ratios. The distribution of lubricant to the lube points is performed by pilot controlled valves and this is done in predetermined order.
Each piston can execute its stroke only after the one before has completed its. Thus the outlets of the progressive feeders and the connected lube points receive lubricant one after another. If the pump continues to operate, after delivering lube from the first to the last lube point, the cycle will be repeated.
The valves resume operation at the position they were stopped when the pump starts to function again. The operation and stand-by periods of the pump can be electronically regulated and the number of outlets as well as the dosage can be adjusted according to operator’s preferences. Each of the feeder section has two respective outlets and the amount of lube supplied per stroke is determined by the piston’s diameter. In case that a lube point does not accept any lubricant - whatever the reason - is or if a feeder piston is blocked, the entire feeder as well as the entire lubrication cycle stops.
One of the advantages of the progressive system is that the situation can be used to emit a signal when the system is monitored
SPECIAL PROGRESSIVE SYSTEM COMPONENTS FOR WIND TURBINES
PUMP: Systems is based on ALL-10 PS central lubrication pump which is available in 12 and 24 V DC. Because of the special design of the reservoir the pump can work in any position. Up to 6 pump elements can be attached to one pump. The pressure produced by pump elements can be adjusted up to 400 bars. The lubricant level is controlled with level sensor controlled by electronic card.
DISTRIBUTOR: Distribution to lubrication points is done by modular progressive dsitributors. There are indicators at each outlet of the distributor; in case of blockage the failure is easy to find. The doses for each point can be adjusted by the distributor.