This invention discloses a design method for
marine energy utilization blades and the designed
impeller. Based on a spherical profile lift-drag combined design concept, the
marine energy utilization blade consists of a
helical blade and two booster blades, one at the top and one at the bottom. The
helical blade is determined by the initial airfoil line along the scanning path of the
helical blade. The two booster blades are respectively connected to the upper and lower ends of the
helical blade, and are determined by a bucket-shaped profile along the spherical arc guide line. The
impeller consists of three sets of blades, a central shaft, and two end plates, all connected spherically. The three sets of blades are evenly distributed on the spherical profile. The central shaft is connected to the upper and lower end plates, providing support for rotation. The upper and lower end plates provide support and fixation, and are connected to the power generation device. This invention's
impeller can achieve efficient and stable operation in omnidirectional low-velocity flow environments such as deep seas, and has advantages such as omnidirectional response to unpredictable ocean currents, high self-starting capability and
operational stability, and optimized structural parameters for efficient operation.