Efficient ducted propeller

A ducted propeller and high-efficiency technology, applied in ship propulsion, ship parts, ships, etc., can solve problems such as affecting the normal navigation of ships, easy to get stuck in water and grass debris, etc., to increase propulsion, reduce possibility, and improve work. The effect of efficiency

Inactive Publication Date: 2014-01-15
WUXI TONGCHUANG FIBERGLASS BOAT FACTORY
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

At present, ducted propellers mainly have the following main disadvantages: the gap between the inner wall of the duct and the tip of the propeller is very small, and water and debris are easy to get stuck; if the duct is deformed, the blade tip will collide with the inner wall of the duct, which will affect the normal navigation of the ship

Method used

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  • Efficient ducted propeller
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Experimental program
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Embodiment Construction

[0013] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0014] See figure 1 , the present invention includes a conduit 1 and a paddle 2 , wherein the inner surface of the conduit 1 is provided with a groove 3 , and the position of the groove 3 corresponds to the peripheral position of the tip 4 of the paddle 2 . See figure 2 The groove 3 of the conduit 1 includes a front end part 31 and a rear end part 30, the front end part 31 is close to the small-diameter end 5 of the conduit 1, there is a slope between the front end part 31 and the rear end part 30, and the slope of the front end part 31 is smaller than the rear end The inclination of the part 30 is to facilitate the discharge of sundries and increase the propulsive force of the propeller; the groove 3 may include a plurality, the number of which is set according to the manufacturing cost of the propeller and the load of the ship.

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Abstract

The invention relates to an efficient ducted propeller which comprises a duct and paddles. The efficient ducted propeller is characterized in that a groove is formed in the inner surface of the duct, and the position of the groove corresponds to the periphery positions of the tail ends of the paddles. Compared with an existing ducted propeller, according to the efficient ducted propeller, due to the fact that the gaps between the tail ends of the paddles and the inner wall of the duct are enlarged, the groove with a certain gradient is formed, the probability that sundries are clamped between the duct and the paddles is reduced, the propulsive force of the propeller is enlarged, and therefore the working efficiency of the propeller is improved.

Description

technical field [0001] The invention relates to the field of ships, in particular to a ducted propeller. technical background [0002] Ducted propeller is a kind of propulsion tool for ships. It refers to adding a guide tube around the propeller, that is, installing a circular sleeve around the ordinary propeller. The structure of the sleeve is relatively simple. It can be fixed and is called fixed. Conduit; can also be rotating, called rotating catheter. Wherein the rotating duct not only plays a diversion role, but also plays the role of a rudder. There are two types of ducts. One type of duct accelerates the water flow at the propeller, which is called an acceleration duct. Acceleration ducts increase the efficiency of heavily loaded propellers, and the ducts themselves generate positive thrust. At present, acceleration ducts have been widely used on tugboats, push wheels, and fishing trawlers; another type of ducts slows down the water flow at the propeller, called de...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H5/14
Inventor 宣敏浩
Owner WUXI TONGCHUANG FIBERGLASS BOAT FACTORY
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