Multi-channel water-jet propulsion pump with guide vanes with unequal number of blades

Abstract

The invention provides a multi-channel water-jet propulsion pump with unequal amounts of guide blades, comprising a suction elbow, a suction straight tube, an impeller, guide blade multi-channel partitions, a guide blade tail cone, a nozzle, a spindle, and guide blades; an outlet of the suction elbow is communicated with an inlet of the suction straight tube, an outlet of the suction straight tube is communicated with an inlet of a mounting cavity of the impeller, an outlet of the mounting cavity of the impeller is communicated with guide blade mounting cavities and the nozzle in sequence, the guide blade tail cone is connected to the tails of the guide blades, the impeller is disposed on the spindle, the guide blade multi-channel partitions are fixed in channels of the guide blades, and skeleton lines of the guide blade multi-channel partitions divide the guide blade channels into j channels, with j being a natural number greater than 1. The guide blade channels are divided into multiple channels, the great flow speed differences between the inner wheel edges and hub sides of the guide blade channels are decreased, flow distribution in the guide blades is under control, the stable operation of the water-jet propulsion pump under high speed and low noise is achieved, and the structure breaks the space limits in water-jet pump design.

Description

Technical field [0001] The invention relates to a water jet propulsion pump, in particular to a water jet propulsion pump with multi-channel guide vanes with unequal number of blades. Background technique [0002] With the continuous development of the shipbuilding industry, especially the continuous challenges brought by war to military technology, thruster technology has become the key to determining maritime warfare. Stealth technology and precision guidance technology require not only high speed, but also low noise. . [0003] In terms of military applications, water jet propulsion technology has applications in high-speed assault boats, high-speed car-passenger ferries, naval high-speed transport ships, frigates, corvettes, amphibious armored vehicles and quiet nuclear submarines, and has some applications in certain aspects. Special advantages. The water jet propulsion pump uses the reaction force of the water jet from the propulsion pump to push the ship forward. Compared ...

AI Technical Summary

Problems solved by technology

Another way is to increase the speed to improve the efficiency of the propulsion pump, but increasing the speed will cause cavitation in the impeller accompanied by noise and hydraulic vibration, which will seriously affect the safe and stable operation of the propulsion pump

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