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Large and medium sized water conservancy projects generally have comprehensive benefits such as flood control, water supply, irrigation and power generation. As the main hydraulic power generation equipment, the safe and economic operation of hydroturbine generator sets is of vital importance. For a hydroturbine affected by the flow of water in the running process, the paper explores the cavitation and abrasion phenomena, analyses the phenomenon of resource waste, energy waste and material waste caused by unreasonable protection of water turbine, and introduces relevant protective measures. These results further enhance the understanding of the corrosion resistance of the hydroturbine and could be used to optimize the hydroturbine protection techniques.

Ecological protection and high-quality development in the Yellow River Basin is a major national strategy for regional economic growth and embodiment of green and coordinated policies. This paper expounds the research direction, implementation measures and existing achievements in the ecological theme for the Yellow River basin in China. It also introduces the methods to realize ecological optimization from the perspective of water resources, which is of certain significance for the further development of ecological protection and rational utilization of water resources in the basin.

Tidal current energy is a rich Marine resource. Compared with other energy sources, it is predictable and the flow rate is stable. For horizontal axis tidal turbine, this paper expounds the development of horizontal axis tidal turbine from scientific research institutions at home and abroad, and introduces the “windmill” type, dome type, “hollow” tubular trend to turbine blade design and hydraulic performance study. This study is of certain significance to the turbine performance optimization.