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Radial turbulence preventing ship propeller

A propeller and anti-interference technology, applied in the direction of rotating propellers, rotary propellers, etc., can solve the problems of unseen ship propellers, cavitation generated by propeller blades, and reduced propeller efficiency, so as to reduce vibration and noise, reduce blade Slightly cavitating, the effect of improving concealment

Inactive Publication Date: 2014-03-05
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Radial turbulence will not only cause noise and vibration to the propeller, but also generate cavitation near the propeller blade; the above-mentioned phenomena will reduce the efficiency of the propeller or even make it unable to use normally
At present, there are many effective measures and methods in engineering practice to reduce and improve propeller noise, vibration and cavitation caused by non-radial turbulence to improve propeller efficiency; Propeller noise, vibration, and cavitation caused by turbulence for ship propellers that improve propulsion efficiency

Method used

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  • Radial turbulence preventing ship propeller
  • Radial turbulence preventing ship propeller
  • Radial turbulence preventing ship propeller

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0021] The anti-disturbance strip 2 of the present invention is arranged on all the blades of the ship propeller, figure 1 with figure 2 Shown is the anti-disturbance strip for one blade of a marine propeller. Looking from the stern to the bow, the propeller rotation indicated by the arrow is clockwise.

[0022] figure 1 with figure 2 Among them, at the arc position with the 4th axis of the propeller shaft as the center and R1 or R2 as the radius, the arc K1K2 obtained by intersecting R2 with the propeller trailing edge 12 at point K1 and intersecting with the propeller leading edge 11 at point K2 , 1 to 2 anti-disturbance strips 2 protrude laterally at the arc K1K2. The anti-disturbance strip 2 includes the blade surface anti-disturbance strip 22 and the blade back anti-disturbance strip 23. The center line 21 of the anti-distur...

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Abstract

The invention discloses a radial turbulence preventing ship propeller. 1-2 turbulence preventing bars are manufactured integrally on each propeller blade. The turbulence preventing bars include the blade face turbulence preventing bars and the blade back turbulence preventing bars. The center line of each turbulence preventing bar is a spatial helical line with R2 as the radius and the center of a rotary shaft of the propeller as the circle center. Compared with a ship propeller without turbulence preventing bars, the radial turbulence preventing ship propeller has the advantages that through the turbulence preventing bars, the velocity and the degree of radial turbulence on the blade faces of the ship propeller can be effectively decreased, blade tip cavitation bubbles and vibration are reduced, noise and acoustic resonance are lowered, efficiency is improved, and thus energy is saved; meanwhile, people can live on a ship more comfortably, and concealed performance of a military ship can be improved.

Description

technical field [0001] The invention relates to a ship propeller structure that uses a propeller to propel water surface or underwater navigation, in particular to a ship propeller structure that can improve ship propulsion efficiency, and belongs to the technical field of ship propulsion. Background technique [0002] Ship propeller is the most widely used ship propeller among all kinds of ship propellers. In order to meet the different propulsion requirements of various ships, there are various types of ship propellers, such as B-type propellers, MAU-type propellers, and large side propellers. Pitch propellers, ducted propellers, controllable pitch propellers, etc. Due to the high-speed rotation of the propeller in the water, and the complex, changeable, and uneven water flow field, the propeller generates noise, vibration, and cavitation on the surface of the blade; The pressure is greater than the suction surface (blade back), which causes the water flow on the propelle...

Claims

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Application Information

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IPC IPC(8): B63H1/14B63H1/15B63H1/18
Inventor 周玉龙潘亦鹏王志东马越
Owner JIANGSU UNIV OF SCI & TECH
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