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The bulb cross-flow type’s pumping conditions and power generation conditions can obtain excellent performance due to the straightness of the inlet and outlet water channels. According to the layout and structure of the turbine, the hydroelectric generating sets for tidal power generation have the following categories ( Peng et al., 2017 Zhang, 2011 Lee et al., 2018 Yin and Wang, 2010): full-flow type, shaft-through flow type, vertical cross-flow type, bulb cross-flow type.
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CREO AIRFOIL GENERATOR GENERATOR
Using the height difference between the high tide and the low tide level to drive the turbine to rotate, which in turn translates into generator power generation. Similar to ordinary hydropower generation, tidal power generation is that during high tide, seawater is stored in reservoirs as potential energy, and then the seawater is released during the ebb tide. As a kind of renewable energy source ( Liu et al., 2018 Xu and Wang, 2019 Gao et al., 2016 Kreitmair et al., 2019) tidal energy has the advantages of high efficiency, cleanliness, and large-scale development and application. And the influence of the inter-stage gap on the unit is summarized from the vorticity distribution and the axial section pressure cloud diagram analysis, and the range of the best inter-stage gap of the unit performance is determined.Īt present, fossil fuels still account for the vast majority of global energy demand, and their mining progress and environmental degradation have far exceeded imagination. The main contents are as follows: hydraulic design of “S”-shaped blade for the two-way counter-rotating axial-flow pump turbine is conducted, and the influence of the gap between different impeller stages on the performance is calculated and analyzed, and the variation law of head and efficiency of the pump turbine under different inter-stage clearances is obtained. Under the premise of realizing the forward and reverse power generation and the forward and negative pumping basic function, it has important engineering significance and academic value for improving the pump turbine performance of various working conditions. In this paper, the hydrodynamic optimization of the two-way counter-rotating axial-flow pump turbine is carried out. The two-way counter-rotation technology is mainly applied to the tidal power station. 2Marine Design & Research Institute of China, Shanghai, China.1China National Research Center of Pumps, Jiangsu University, Zhenjiang, China.Wang Xiuli 1, Lin Bin 1, Li Yang 1, Zhang Yan 2, Zhu Rongsheng 1, Long Yun 1* and Fu Qiang 1