The invention discloses an efficient low-noise water jet propulsion pump, and belongs to the technical field of ship engineering. The propulsion pump comprises a flow guide cover, a spray pipe, a driving shaft, a driving shaft protection pipe, a hub, an impeller and a guide impeller; the flow guide cover is in butt joint with the spray pipe, the driving shaft and the hub are coaxially connected and then supported in the flow guide cover and the spray pipe through the driving shaft protection pipe, and the impeller and the guide impeller are fixed to the hub, wherein pits are formed in the inner surfaces of contracted nozzles at the positions, corresponding to the rear portion of the impeller and the rear portion of the guide impeller, of the tail of the spray pipe, and the pits are evenlydistributed in the inner surface. By means of the efficient low-noise water jet propulsion pump, the overflow resistance of the water jet propulsion pump can be reduced, and the propulsion efficiencyis improved.
本发明公开了一种高效低噪喷水推进泵,属于船舶工程技术领域。该推进泵包括导流罩、喷管、驱动轴、驱动轴护管、轮毂、叶轮和导叶轮;导流罩和喷管对接,驱动轴和轮毂同轴连接后由驱动轴护管支撑在导流罩和喷管的内部,叶轮和导叶轮固定在轮毂上,其中,叶轮与导叶轮后部对应的喷管尾部收缩状喷口的内表面开具凹坑,所述凹坑在内表面上均匀分布。本发明能够减小喷水推进泵的过流阻力,提高推进效率。
Efficient low-noise water jet propulsion pump
一种高效低噪喷水推进泵
2021-03-12
Patent
Electronic Resource
Chinese