Impeller blade, impeller blade leading edge waveform determination method and water jet propulsion pump

Abstract

The invention relates to an impeller blade, an impeller blade leading edge waveform determination method and a water jet propulsion pump. The front edges of the impeller blades are three-dimensional wavy front edges extending in the spanwise direction and the transverse direction. The water jet propulsion pump comprises an impeller, a guide vane body, a pump body and a pump shaft, the impeller andthe guide vane body are sequentially arranged in a pump cavity of the pump body in the water flow direction. The guide vane body is fixed on the inner wall of the pump body; the pump shaft penetratesthrough an inner hole of the guide vane body; and the impeller is fixed on the pump shaft. By applying the wavy front edge impeller blades to the water jet propulsion pump, the operation performanceof the water jet propulsion pump can be effectively optimized, and the lift efficiency of the water jet propulsion pump is improved.

Description

technical field [0001] The invention relates to the field of propellers, in particular to an impeller blade and a method for determining the waveform of the leading edge of the impeller blade and a water jet propulsion pump. Background technique [0002] The development of the global economy, the increase in the demand for trade in goods, and the increase in international maritime transport trade have promoted the continuous expansion of the ship propulsion market. Water jet propulsion pumps have high mobility, strong cavitation resistance, shallow draft, low relative resistance, can adapt to different operating conditions, and have low underwater acoustic radiation, and are widely used in new high-performance ships. Although the head performance of the existing water jet propulsion pump can meet the existing transportation needs, with the increasing demand for transportation and trade, the research and development of water jet propulsion pumps with better performance can be...

AI Technical Summary

Problems solved by technology

[0003] Due to the complexity of the internal flow field of the water jet propulsion pump, the previous technical means to improve the performance of the water jet propulsion pump are almost limited to external means, such as optimizing the shape of the water inlet channel, which can only improve the water jet propulsion in a certain working condition There are few solutions to optimize the performance of water jet propulsion pumps from the design level

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