Study on the flow field uniformity of hydro-floating ship lift combined type hydraulic-driven system based on the residual energy theory

摘要

The hydro-floating ship lift originally invented in China is a major innovation in the field of navigation technology. The shaft water levels synchronization of its unique hydraulic-driven system plays a crucial role in reducing the torque of the synchronous shafts and ensuring the safety and stability operation of the ship lift. This study aims to investigate the muti-shaft water level synchronization and the flow velocity uniformity of the combined type hydraulic-driven system. Based on the theory of residual energy, a new index m2 proposed in this study is more suitable for evaluating the flow velocity uniformity of the combined hydraulic-driven system. Finally, the critical value of m2=75 is calculated via the results of the scaled physical mode test as the threshold of water flow uniformity, and it provides a basis for determining the reasonable height of the pressure stabilizing chamber.