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Open-hole deflector and pump-jet propeller based on open-hole deflector method

A deflector and diversion hole technology, applied in the direction of rotary propeller, ship propulsion, propulsion components, etc., can solve the problems of no reference and difficult to adopt, and achieve the goal of reducing strength, reducing strength and reducing cavitation noise. Effect

Active Publication Date: 2020-04-21
CHINA SHIP DEV & DESIGN CENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional methods of reducing the blade tip vortex, such as reducing the blade tip clearance or integrating the blade with the deflector, are difficult to adopt in pump spraying and have no reference value

Method used

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  • Open-hole deflector and pump-jet propeller based on open-hole deflector method
  • Open-hole deflector and pump-jet propeller based on open-hole deflector method
  • Open-hole deflector and pump-jet propeller based on open-hole deflector method

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Embodiment Construction

[0022] It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0023] It should be noted that, in the description of the present invention, the terms "horizontal", "vertical", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientation or positional relationship indicated by "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, and It is not to indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, or operate in a particular orientation, and thus should not be construed as limiting the invention. In addition, the terms "first", "second", etc. are used for descriptive purposes only and should not be const...

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Abstract

The invention discloses a pump-jet propulsor based on a trepanning flow guiding method. The pump-jet propulsor comprises a flow guiding cover, a trepanning flow guiding device and a propeller; the outer side of the propeller is covered with the flow guiding cover, and the trepanning flow guiding device is mounted on the area, over propeller blade tips, on the flow guiding cover; and the trepanningflow guiding device is of a circular-ring-shaped structure and is internally provided with a hollow annular cavity, and a plurality of flow guiding holes communicating with the annular cavity of thetrepanning flow guiding device are formed in the side wall of the inner annular side of the trepanning flow guiding device. According to the pump-jet propulsor based on the trepanning flow guiding method, the strength of blade tip vortexes in a flow field is lowered, thus cavitation is reduced, and cavitation noise is lowered.

Description

technical field [0001] The invention relates to the technical field of ship propulsion devices, in particular to an aperture deflector and a pump-jet propeller based on the aperture deflector method. Background technique [0002] The pump-jet propeller is a combined propulsion device composed of an annular duct, a stator and a rotor. It has the advantages of good maneuverability, high maneuverability, and strong anti-cavitation ability, and has been applied in ships. However, with the increasing demand for high speed and heavy load, the cavitation of pump jet propulsion has become inevitable. The occurrence of cavitation not only reduces the thrust and efficiency of the pump-jet propeller, causes cavitation damage on the surface of the propeller, and reduces the service life of the propeller, but also aggravates the vibration and noise of the pump-jet propeller, seriously affecting the acoustic performance of the ship . [0003] Due to the existence of the tip gap between ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H11/02B63H1/16B63H1/18
CPCB63H1/16B63H1/18B63H11/02
Inventor 陈鹏潘亚军田波王冠袁兴军
Owner CHINA SHIP DEV & DESIGN CENT
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