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Fish shape simulating nacelle propeller

A technology for propellers and pods is applied in the field of components in the field of ship structure technology, which can solve problems such as water leakage and excessive wear of propeller bearings, and achieve the effects of improving maneuverability, delaying wear and damage, and improving hydrodynamic performance.

Inactive Publication Date: 2007-11-14
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above-mentioned pod propeller are: in the actual application process, there have been phenomena such as water leakage and excessive wear of propeller bearings.

Method used

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  • Fish shape simulating nacelle propeller
  • Fish shape simulating nacelle propeller

Examples

Experimental program
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Embodiment Construction

[0021] As shown in Figures 1 and 2, the present invention includes: pod body 1, bracket 2, motor bearing 3, shaft coupling 4, propeller 5, propeller bearing 6, propulsion motor stator 7, propulsion motor rotor 8, tail fin 9, two A side fin 10, the pod body 1 is fixedly connected with the support 2, and one end of the propeller 5 is fixed in the pod body 1 through the propeller bearing 6, and the propulsion motor stator 7 is arranged in the pod body 1 through the motor bearing 3 and the support, The shaft of the propulsion motor rotor 8 is connected with the shaft of the propeller 5 through a coupling 4, and the tail fin 9 and the side fins 10 are connected to the pod body 1 in a smooth transition respectively.

[0022] The pod body 1 is fish-shaped in shape.

[0023] The pod body 1 has an elliptical cross-section, and its ellipticity is ≤3%.

[0024] In the pod body 1 , the ratio of the diameter at the largest section to the diameter of the propeller is in the range of 0.4-0....

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Abstract

The present invention is one kind of fish-shaped nacelle propeller and belongs to the field of ship propelling technology. The fish-shaped nacelle propeller of the present invention includes nacelle body, support, motor bearings, shaft coupling, screw propeller, screw propeller bearing, propelling motor stator, propelling motor rotor, tail fin and two side fins. The nacelle body is connected with the support; the screw propeller has one end fixed via the screw propeller bearing inside the nacelle body; the propelling motor stator is set via the motor bearings and the support inside the nacelle body; the propelling motor rotor shaft is connected to the shaft of the screw propeller via shaft coupling; and the tail fin and the side fins are connected to the nacelle body smoothly. The present invention has optimized streamline outer shape, effectively improved tail flow field, improved hydrodynamic performance, and raised propeller efficiency.

Description

technical field [0001] The invention relates to a component in the technical field of ship structure, in particular to a fish-like pod propeller. Background technique [0002] The concept of pod propulsion originated from icebreakers and was first proposed in the late 1880s. At that time, the Finnish Maritime Administration was trying to find a solution for icebreakers with higher performance in ice areas. The initial idea was that the propulsion motor could provide propulsion in any direction. Subsequently, ABB proposed the prototype of Azipod and submitted it to the Kvaerner Masa shipyard for manufacture. The propeller mainly includes two parts, the pod and the propeller. The pod is suspended below the hull by brackets and can rotate in all directions. The motor is placed inside the pod, the stator of the motor is fixed on the shell of the pod, and the rotor of the motor is the shaft of the propeller, which directly drives the propeller. The ship's propulsion system an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H5/125B63H20/18
Inventor 董涛王志新
Owner SHANGHAI JIAOTONG UNIV
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