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Propeller

A new type of propeller technology, applied in the direction of rotating propellers, rotating propellers, etc., can solve the problems of insufficient economy, power loss, increased energy consumption, etc., and achieve the effect of simple structure, small vibration force and energy saving

Inactive Publication Date: 2003-12-24
李日华
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  • Abstract
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Problems solved by technology

[0002] Shipping is one of the country's major transportation industries, ocean transportation, inland waterway transportation and various industrial ships. It is one of the industries for the country's economic development, and the propeller is the main part of the ship. The tail of the traditional propeller blade is short. The oblique screwing method causes power loss, is laborious, increases energy consumption, and is not economical

Method used

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Embodiment Construction

[0009] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0010] The invention as figure 2 As shown, it is composed of a wheel shaft 2 and a plurality of blades 1, and the edge of the blade 1 is composed of four curves connected in sequence: the anti-drag line k, the outer rotation line l1, the connecting line m, and the waterline n. Assume that the length of the propeller tail in the traditional technology is D, then the length 3 of the propeller tail part of the present invention is 2D-4D, and the outer rotation line l1 is an arc line with the axle center as the center, and half of the radius of this circle is a radius to draw a circle to form the arc line l2, within the outer rotation line l1 The part of the blade 1 other than the arc line l2 is concave along the direction perpendicular to the radial direction, and forms an angle of 13-23 degrees with the shaft section.

[0011] The following examples illustrate:

[0...

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Abstract

A novel propeller is composed of an axle and multiple blades, and features that the axial length of blade tail is elongated by 2-4 times and the edge of blade consists of anti-resistance curve, external edge curve which is an arc line, a transition curve and a water curve which is an arc line, a transition curve and a water yielding curve. The partial blade between said external edge curve and a particular arc has a concave surface. Its advantages are high shap speed increased by 30%, low vibration, and simple structure.

Description

technical field [0001] The invention relates to a propeller, in particular to a novel propeller. Background technique [0002] Shipping is one of the country's major transportation industries, ocean transportation, inland waterway transportation and various industrial ships. It is one of the industries for the country's economic development, and the propeller is the main part of the ship. The tail of the traditional propeller blade is short. The oblique precession method causes power loss, is laborious, increases energy consumption, and is not economical. see figure 1 , the propeller in traditional technology is composed of four curves connected in turn, the anti-resistance line k, the connecting line m, and the waterline n, forming a side oblique precession mode. Contents of the invention [0003] The object of the present invention is to provide a novel propeller with simple structure, little effort and low energy consumption. [0004] The present invention is realize...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H1/26
Inventor 李日华
Owner 李日华
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