Research on the Rheological Characteristics of Wind Power Grease Based on Rheological Parameters

Peng, Han; Li, Songyin; Shangguan, Linjian; Zhang, Hai; Zhao, Defang

doi:10.3390/lubricants11070299

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…In contrast, at low temperatures, the fluidity of the gel-state grease is weakened, and the flow point strain value is increased, which may lead to excessive viscosity and affect the start-up and normal operation of the wind turbine. According to the survey, it is known that the standard operating temperature range of wind turbines is usually between −20 • C and 80 • C, and the operating temperature of bearings during operation does not exceed 80 • C [38]. Therefore, the temperature measurement points chosen in this paper are −20 • C, 30 • C, and 80 • C. In the dynamic oscillation test, the control angular velocity was kept constant at 10 rad/s and the shear strain ranged from 0.1% to 100%.…”

Section: Rheological Experimental Design and Parameterizationmentioning

confidence: 99%

The Optimization Study of Rheological Characteristics of Wind Power Grease Based on Gel-State

Peng,

Zhao,

Shangguan

et al. 2024

Gels

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The gel-state grease plays a vital and indispensable role in the long-term operation of wind turbines. To reduce carbon emissions and increase the reliability of wind turbines, this paper takes the gel-state Mobil SHC 461WT grease as the study object. Firstly, the rheological properties of the gel-state Mobil SHC 461WT grease were investigated using the Anton Paar MCR302 rotational rheometer. Secondly, the rheological characteristics of three different gel states of the Mobil SHC 461WT grease (additive content of 0.1% of RFM3000, SK3115, and PV611, respectively, in the gel-state Mobil SHC 461WT grease) were optimized under the same conditions. Finally, according to the experimental results and the Herschel–Bulkley (H–B) model, the RFM3000 additive has the best effect on improving the rheological characteristics of the gel-state Mobil SHC 461WT grease. This research provides a new idea and direction for the technological advancement of the gel-state grease industry.

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Section: Rheological Experimental Design and Parameterizationmentioning

confidence: 99%

The Optimization Study of Rheological Characteristics of Wind Power Grease Based on Gel-State

Peng,

Zhao,

Shangguan

et al. 2024

Gels

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“…The speed of bearing rotation significantly impacts the lifespan of the grease [112]. The higher rotation speeds increase the shear stress on the grease, which can damage its fibrous structure and shorten its lifespan [113,114]. Different bearings have varying speed limits, and a speed factor is often used to compare them.…”

Section: Selection Of Bearing Greasementioning

confidence: 99%

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Peng,

Zhao,

Shangguan

et al. 2023

Coatings

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With the significant penetration of wind generation, wind turbines require higher and higher lubrication performance for bearings. To improve the lubrication performance of wind power bearings, this study takes wind power bearings as the research object and comprehensively analyzes the wear forms of wind power bearings as well as intelligent lubrication methods. Firstly, the main roles and wear forms of wind turbine bearings are sorted out and analyzed. Secondly, the common lubrication problems of wind power bearings are analyzed from the bearing grease selection, lubrication mode, and lubrication status, highlighting the important influence of lubrication on bearings. Thirdly, the wind turbine bearing wisdom lubrication method research and organization, mainly including the wind power generation bearing lubrication materials, lubrication devices and monitoring methods, and other issues of research and analysis. Finally, current challenges and future development directions are summarized, which are designed to provide theoretical reference and technical support for the related research and engineering practice in the field of wind power engineering.

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“…Extensive research has been conducted to explore the effects of these parameters on grease properties and subsequent bearing performance. 12–14…”

Section: Introductionmentioning

confidence: 99%

Impact of grease physical properties on the friction torque and service life of wheel bearings

Jain,

Soni,

Vashishtha

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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Wheel bearings play a crucial role in ensuring the smooth and reliable rotation of wheels in automotive applications. Grease is commonly used as a lubricant in wheel bearings. The physical properties of grease, such as viscosity, base oil type, and thickener composition, significantly influence the overall performance and longevity of wheel bearings. This study investigates the impact of grease's physical properties on wheel bearing friction torque and service life. To evaluate the effects of different grease formulations, a series of experiments were conducted using a four-ball tester, rheometer, and a custom-built test rig to measure bearing frictional torque and service life. Multiple greases with varying viscosity grades, base oil types (mineral oil, synthetic oil), and thickener compositions (lithium, diurea, and polyurea) were tested under controlled operating conditions. Friction torque measurements were obtained using a high-accuracy torque sensor, while service life was determined by monitoring the bearing life in actual endurance testing. The results indicated that grease physical properties directly affected wheel bearing friction torque and service life. Low to Medium-viscosity greases generally exhibited 35–40% lower friction torque due to enhanced lubrication film formation and reduced metal-to-metal contact however, excessively high viscosity resulted in 50–60% higher frictional torque and thereby increased energy consumption. Different base oil types showed varying friction reduction and service life level, with mineral oil in some cases showed lower frictional torque around 30–40% particularly at high temperature but with significant reduction in the service life. Furthermore, the thickener composition significantly influenced grease performance. Based on these findings, selecting the appropriate grease with optimal physical properties is crucial for minimizing friction torque and extending the service life of wheel bearings.

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Research on the Rheological Characteristics of Wind Power Grease Based on Rheological Parameters

Cited by 4 publications

References 25 publications

The Optimization Study of Rheological Characteristics of Wind Power Grease Based on Gel-State

The Optimization Study of Rheological Characteristics of Wind Power Grease Based on Gel-State

Review of Wind Power Bearing Wear Analysis and Intelligent Lubrication Method Research

Impact of grease physical properties on the friction torque and service life of wheel bearings

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