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A square tube propeller ship propeller

A propeller and propeller technology, applied in the field of propeller ship propulsion, can solve the problems of large resistance and large cross-sectional area, and achieve the effects of small resistance, small cross-sectional area and high efficiency

Active Publication Date: 2018-08-03
DUTCH THRUSTLEADER MARINE PROPULSION (JIANGSU) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The traditional barreled propeller propeller is cylindrical, the rotation plane of its blades is basically perpendicular to the opening direction of the casing, the cross-sectional area is large, and the resistance is relatively large, especially at high speeds.

Method used

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  • A square tube propeller ship propeller
  • A square tube propeller ship propeller

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Embodiment Construction

[0009] The present invention is described below in conjunction with accompanying drawing: With reference to accompanying drawing, a kind of square tube propeller ship propeller comprises engine 1, propeller 2 and square tube shape shell 3. The engine 1 is installed on the outside of the square tubular casing 3 by a bracket. The output shaft 11 of the engine is connected with the propeller 2 , and the output shaft 11 of the engine forms an acute angle with the opening direction of the square tubular casing 3 . The rotation plane of the propeller 2 is perpendicular to the output shaft 11 of the engine, and the included angle α between the rotation plane of the propeller 2 and the side wall of the square tubular casing 3 is 45°. The section of propeller 2 is airfoil. The inner circumference of the cross section of the square tubular shell 3 is a rectangle, the length of the rectangle is slightly greater than the maximum outer diameter of the propeller 2, and the width of the rec...

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Abstract

A ship propeller with a square tube propeller relates to a ship propeller, which includes an engine, a propeller and a square tube casing. The engine is mounted on the outside of the square tube casing through brackets. The rotation plane of the propeller is perpendicular to the output shaft of the engine, and the rotation plane of the propeller forms an acute angle with the opening direction of the square tubular shell. The section of the propeller is airfoil. The inner circumference of the cross-section of the square tubular shell is rectangular, the length of the rectangle is slightly greater than the maximum outer diameter of the propeller, and the width of the rectangle is slightly greater than the maximum external diameter of the propeller, the rotation plane of the propeller and the opening direction of the square tubular shell. The product of the sines of the acute angles formed. The propeller is completely inside the square tube housing. The propeller can rotate flexibly in the square tubular casing. Compared with the traditional ship propeller, the cross-sectional area of ​​the propeller of the present invention is much smaller when the flow rate is the same, and the efficiency is high and the resistance is small.

Description

technical field [0001] A square tube propeller ship propeller relates to a ship propeller, in particular to a propeller ship propeller. Background technique [0002] The traditional barreled propeller propeller is cylindrical, and the rotation plane of its blades is basically perpendicular to the opening direction of the casing. The cross-sectional area is large and the resistance is relatively large, especially at high speeds. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the above-mentioned prior art, and provide a square tube propeller ship propeller with small cross-sectional area and low resistance. [0004] The technical solution of the present invention is: a square tube propeller ship propeller, comprising an engine, a propeller and a square tube shell. The engine is mounted on the outside of the square tube casing through brackets. The output shaft of the engine is connected with the propeller, and the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H5/14
Inventor 王志成
Owner DUTCH THRUSTLEADER MARINE PROPULSION (JIANGSU) CO LTD
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