Multi-stage spiral pipe type pump spraying propeller

Abstract

The invention belongs to mechanical equipment, and particularly relates to a multi-stage spiral pipe type pump spraying propeller. A guide cone is arranged on the outer circumference of the left end of an outer conduit (12); a plurality of side gill holes (2) are formed in the outer wall of the guide cone; a plurality of spiral pipe bodies (11) are connected to the right end of an unspiral flow distribution pipe; each spiral pipe body consists of a main pipe, a plurality of branch pipes and a valve plate; a plurality of branch pipes are evenly distributed on the main pipe in a diverging mode in the circumferential direction. One end of each branch pipe is communicated with the main pipe, the other end of each branch pipe is communicated with an inner cavity of the valve plate, the left endface of each valve plate seals an inner cavity of the right end of the main pipe of the spiral pipe body, and the right end face of each valve plate is communicated with an inner cavity of the left end of the main pipe of the spiral pipe body connected with the right side. Due to the fact that a multi-stage structure is adopted, the radial size of a rotor can be greatly reduced under the condition that the same precession coefficient is guaranteed, the structure of the whole propeller can be more compact, low torque and high rotation speed enable an internal flow field to flow at a high speed, and the propeller is more suitable for high-speed submarine propulsion.

Description

technical field [0001] The invention belongs to mechanical equipment, in particular to a multi-stage coil type pump-jet propeller. Background technique [0002] Submarines are of great significance to our country's coastal defense. In the manufacturing process of submarines, improving their speed and sonar invisibility are two important issues. The speed of the submarine is mainly realized by the pump-jet propeller, and the traditional pump-jet propeller must have dragging resistance due to the existence of propeller blades, the flow path is discontinuous, and there must be blades due to the gap between the blade tip and the duct. tip leakage and vortex flow, while generating tip vortex cavitation, aggravating vibration and noise, thereby reducing the speed and sonar stealth, and cannot meet the high-speed submarine propulsion. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned technical deficiencies, and provide a m...

AI Technical Summary

Problems solved by technology

The speed of the submarine is mainly realized by the pump-jet propeller, and the traditional pump-jet propeller must have dragging resistance due to the existence of propeller blades, the flow path is discontinuous, and there must be blades due to the gap between the blade tip and the duct. tip leakage and vortex, and tip vortex cavitation at the same time, aggravating vibration and noise, thereby reducing the speed and sonar stealth, and cannot meet the requirements of high-speed submerged propulsion

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