Developing History of Water Hydraulic Technology and its Application in Coal Mine Production

Abstract

Water hydraulic technology, an ideal green technology, attracts great attention in the field of power transmission & control technology. In this technology, natural water or sea water is used to replace mineral oil as working fluid in hydraulic circuits, with the great advantages of fireproofing, environment protection, safety, and with lower price. The paper introduces the changing process of the working fluid between water and the mineral oil after a brief review of the development of hydraulic technology, summarizes the achievements in the research of water hydraulic technology in China and other countries, analyzes the current technological problems such as friction and wear in components and the vibration noise in hydraulic systems, and it also discusses the application and prospect of the water hydraulic technology in the coal mine production systems, such as hydraulic support, gas drainage, and so on.

Effect of Material Selection and Surface Texture on Tribological Properties of Key Friction Pairs in Water Hydraulic Axial Piston Pumps: A Review

“…At the beginning of the 20th century, with the rise of the petroleum industry and the development of oil-resistant sealing materials, such as butadiene rubber, the mineral oil hydraulic medium, with its good comprehensive physical and chemical properties, soon replaced water, and became the most important working medium in hydraulic systems [2]. In 1905, American professor Harvey W., and engineer Reynold J. developed an oil hydraulic axial piston pump.…”

Molecular Dynamics Simulation of Water-Based Nano-Lubrication

“…At present, most of the lubricants used in the industrial are still mineral oil, resulting in huge energy consumption and environmental pollution [1]. As a green, energy-saving and safe new alternative lubricant, water is becoming the focus of attention and researches in recent years [2][3][4][5][6]. However, the low viscosity and poor film-forming ability of the water clearly limit its practical application in the lubrication industrials [7].…”