The invention relates to a pump jet propeller which comprises an annular guide pipe, a first stator, a rotor and a propeller hub, the first stator, the rotor and the propeller hub are all arranged in the annular guide pipe, the first stator is close to the tail edge of the annular guide pipe, the first stator and the rotor are connected with the propeller hub, and the first stator is connected with the inner wall of the annular guide pipe. The tail edge of the annular guide pipe is provided with a plurality of sawtooth assemblies which are arranged at intervals in the circumferential direction of the annular guide pipe, the sawtooth assemblies are located between every two adjacent stator blades, each sawtooth assembly comprises at least one sawtooth structure, and the first stator comprises a plurality of stator blades; the rotor is used for rotating and generating water power, so that the pump-jet propeller generates forward thrust; the sawtooth assembly is used for disturbing the wake flow field of the pump-jet propeller to conduct vibration and noise reduction, and the problems that due to a continuously-distributed sawtooth structure, the thrust loss is large, and the noise reduction effect is poor can be solved.
本申请涉及一种泵喷推进器,包括环形导管、第一定子、转子和桨毂,第一定子、转子和桨毂均设置于环形导管内部,第一定子靠近环形导管的尾缘,第一定子和转子与桨毂连接,第一定子与环形导管的内壁连接,环形导管的尾缘设置有沿环形导管的周向间隔排布的多个锯齿组件,锯齿组件位于相邻两个定子叶片之间,锯齿组件包括至少一个锯齿结构,第一定子包括多个定子叶片;转子,用于旋转并产生水动力,以使泵喷推进器产生向前的推力;锯齿组件,用于干扰泵喷推进器的尾流场进行减振降噪,可以改善连续分布式锯齿结构引起的较大推力损失及降噪效果不佳的问题。
Pump-jet propeller
泵喷推进器
2025-02-14
Patent
Electronic Resource
Chinese