Grease Consumables Solutions
Lubricants Solution for Wind Power
Industry pain points
Harsh Operational Environment
Wind turbines is a typical outdoor equipment with little mannual operation. In order to make full use of wind resources, severe cold and coastal areas have become places where wind power generation equipment is most concentrated. In these areas, low temperature, humidity, salt fog and other adverse environments pose great threats to safe and steady operation of the wind turbine. Therefore, lubricants with special performance are required to enable uncompromised protection for wind turbines.
Difficult equipment maintenance
Compared with ground equipment, a standout feature of wind turbines is the difficulty of maintenance due to its installation height. In addition, the areas where wind resources are abundant are generally located in relatively remote areas, cause high overall maintenance cost. Therefore, the basic requirements for maintenance is long period, simple and easy to maintain. Accordingly, long-term effective lubrication has become the basic requirement for lubricating grease in wind turbines
Lubrication requirements
Excellent Lubricating Protection
As a large equipment with complexity operation conditions and difficulty in maintenance, the lubricants must provide excellent protection for lower wear and longer durability.
Adaptability
Complex equipment raises various lubrication requriments. Since wind turbines are distributed over a wide area and diversified environments. So lubricating grease must adapt to complicated environmental challenges such as wide temperature, humidity, salt fog, vibration .etc.
Long Life-time
Wind power equipment is extremely demanding for the operation stability in cosnideration of the difficult and costly for maintenance. Therefore, long life-time has become the basic requirement for wind power lubricating grease.
Solutions
Based on the special requirements of wind turbine operation, and by dint of a decade of lubrication knowhow in wind power industry, Paguld Intelligent’s R&D team developed Harlub series of greases aimed for large wind turbines application, which can provide efficient, long-lasting and reliable protection for large wind turbines.
Main bearing grease : ①WBG-10 ②WBG-460
Pitch/yaw bearing grease : ①WBG-20 ②WBG -20K ③WBG-20F
Generator bearing grease :WBG-30
Open Gear Grease: ① WGG-40R (Manual Operated) ②WGG-40R (W) （Spray）
Products
Application progress
At present, Paguld's Harlub brand wind turbine greases have been applied in bulk by well-known wind turbine manufacturers such as Goldwind and Envision, and have been unanimously recognized by customers. Some products have served tens of thousands of wind turbines, effectively ensuring the efficient production of clean energy.
Main bearing lubrication requirements and difficulties
Typical low-speed and heavy-load bearing operation mode is difficult to form a continuous effective oil film.
Impact loads during the start-stop process bring in boundary lubrication state.
Require excellent low temperature performanace to offer good pumpability, lower torque and reduce the fretting wear.
Keep corrosive agents away from metal surfaces and, if the agents reach the surfaces, inhibit the reaction.
Problems that could be solved
Reasonable base oil viscosity ratio helps grease to form stable lubricating oil film in the contact area
Adnvanced additives system design ensure the sufficient protection under boundary lubrication state.
The systhetic base oil utilization provide enough low temperature pumpability, low bearing torque and effectively help to reduce the fretting wear.
The selected rust inhibitators effectively protect the bearing from the humidity and salt fog.
Solutions
WBG-10 Wind Turbine Lubricating Grease (Main Bearing)
HR460风电润滑脂
APPLICATION PROGRESS
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Pitch/Yaw Bearing lubrication requirements and difficulties
Frequently start-stop bring impact load and incontinuity oil film
Fretting wear is prone to occur when bearing is locked
Require excellent low temperature to offer good pumpability, low torque and reduce the fretting wear.
Keep corrosive agents away from metal surfaces and, if the agents reach the surfaces, inhibit the reaction.
Problems that could be solved
Large enough load capacity to resist huge operating loads and solve the fretting wear of bearings
The systhetic base oil utilization provide enough low temperature pumpability, low bearing torque and effectively help to reduce the fretting wear.
The selected rust inhibitators effectively protect the bearing from the humidity and salt fog.
Solutions
Based on deep understanding on Pitch/Yaw bearing, Harlub WBG-20 series including 4 different products aim to meet OEM various product demand.
WBG-20 Wind Turbine Grease (Pitch/Yaw Bearings)
HR585K风电润滑脂
HR141风电润滑脂
PRODUCTS
Application progress
In the localization project of Envision Energy's pitch grease, multiple rounds of bench tests and on-site prototype tests proved that Paguld’s grease WBG-20 performance exceeded that of the imported similar products. It was technically certified by Envision bearing supplier RotheErde and recognized by Envision. By now, It has been bulk supplied to Envision and has served more than 10,000 WT units in total.
Generator bearing lubrication requirements and difficulties
High temperature and high speed require grease have excellent performance on anti-oxidation and shear resistance;
To control the bearing temperature ramp up, the grease is required to have good performance on anti-wear, low friction and low torque.
Due to the high operating temperature, it is necessary to inject the fresh grease in time and discharge the used grease
Problems that could be solved
The selection of complex thickener and systhetic base oil make grease have excellent resistance on oxidation and shear stability.
Appropriate formulation design can optimize the bearing running condition, decrease the torque and friction, extended the bearing and grease life time.
The selection of appropriate consistency and base oil viscosity, ensure the grease can be smoothly dischared for better lubrication
Solutions
HR WBG-30 wind power grease
Products
Application progress
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Open gear lubrication requirements and difficulties
Frequently start-stop bring impact load on tooth and hard to form adequate oil film. The contact stress on the tooth surface is huge. Even under static condition, fretting wear occurs due to blade vibration.
In an open environment susceptible to environmental effects, the performance of rust prevention and water resistance is very important
Problems that could be solved
Excellent lubricity and extreme pressure protection, provide stable and reliable lubrication protection under boundary friction conditions
Excellent adhesion, can maintain long-term adhesion on gear surface without grease drop
Excellent anti-rust performance, protecting gears from corrosion, especially salt fog in offshore wind farm.
Excellent pumpability , can meet the requirments of automatic lubrication system at low temperatures.
Solutions
WGG-40R Anti-rust Open Gear grease
WGG-40R (W) Anti-rust Open Gear grease
Products
Application progress
WGG-40R anti-rust open gear grease has been applied in bulk to Envision Energy’s onshore WT units, covering 1.5MW-6MW models, and has served tens of thousands of wind turbines.
WGG-40R (W) anti-rust open gear grease has been supplied in bulk to Envision Energy’s offshore Model units;
Meanwhile, it has been applied substantially in pitch open gear of Goldwind’s WT units using automatic lubrication systems. It has served thousands of units, covering all models that use gear ring to drive pitch.
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