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Counter-rotating shaftless rim drive propellers

A technology of wheel rim drive and propeller, which is applied in the direction of rotary propeller, ship propulsion, propulsion components, etc. It can solve the problems of difficult manufacturing, high manufacturing and maintenance costs, and small carrying capacity, so as to avoid head-on resistance and entanglement , Good lateral stability, and the effect of improving stability

Active Publication Date: 2017-09-26
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This hubless structure is beneficial to reduce resistance and solve the problem of debris or cable entanglement, but limited by the size of the motor, the power of the propeller is limited
Moreover, the thrust generated by the blades is generally borne by the water-lubricated dynamic pressure bearings at both ends of the rotor. The bearing area is limited by the thickness of the shell, and the bearing capacity is small, which also limits the development of high-power shaftless propellers.
The Chinese patent "Shaftless Driven Integrated Motor Propeller" (CN102632982A) is a single-rotor hub-type rim-driven propeller. Support the bearing and transmit thrust; although this structure is conducive to improving the bearing capacity of the bearing, it cannot eliminate the head-on resistance of the propeller hub and the hull
Although this structure is beneficial to reduce the rotation loss of the wake and improve the propulsion efficiency, it has obvious disadvantages such as complex shafting, difficult manufacturing, and high manufacturing and maintenance costs.
Moreover, there is a relatively obvious cavitation phenomenon at the tip of the counter-rotating propeller.

Method used

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Embodiment Construction

[0028] The present invention will be further described below in conjunction with the embodiments and drawings, but not limited to the following embodiments.

[0029] The counter-rotating shaftless wheel rim drive propeller provided by the invention has a structure such as figure 1 and figure 2 As shown, it consists of five parts: front rotor assembly, rear rotor assembly, conduit assembly, stator winding 1, and bearing assembly, wherein: the front rotor assembly and the rear rotor assembly are respectively installed in the inner cavity of the housing 3 of the conduit assembly, respectively It is supported by bearing assemblies installed at both ends of the conduit assembly; the stator winding 1 is installed in the inner wall of the casing 3 of the conduit assembly, and the inner wall of the stator winding 1 is opposite to the outer walls of the front rotor assembly and the rear rotor assembly; the conduit assembly is connected to the The hulls are connected.

[0030] The fr...

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Abstract

The invention discloses a counter-rotating shaftless rim-driven propeller. The propeller is provided with a conduit assembly, and a stator winding, a front rotor assembly, and a rear rotor assembly are installed in the inner chamber of the casing; the rotor in the two rotor assemblies is The ring forms a conical matching pair in the axial direction, and the permanent magnets embedded in the outer walls of the two rotor rings have opposite polarities; after the stator winding is energized, it forms a magnetically opposite magnetic field with the permanent magnets at the same time, that is, the single stator drives the double rotors to rotate, forming The double-rotor ring motor drives the front blade and the rear blade to rotate in opposite directions, generating thrust to propel the ship forward. The invention has the advantages of small space occupation, high propulsion efficiency, large thrust, good lateral stability, small vibration, etc., and is especially suitable for propulsion of military ships and modern civil ships and positioning of offshore platforms.

Description

technical field [0001] The invention belongs to the field of ship propulsion, in particular to a new type of propulsion with high efficiency, high thrust, good stability and high integration formed by simultaneously driving a hubless double rotor with blades to rotate counter-rotatingly by a single stator in a duct propellers, so-called counter-rotating shaftless rim drive propellers. Background technique [0002] In recent years, with the needs of naval defense construction and the development of water trade, the performance requirements of ship propulsion devices have become higher and higher. The disadvantages of traditional shaft-driven propellers have gradually become prominent, and they can no longer better meet the work requirements. For example, the traditional shaft-driven propeller has many components, complex structure, large cabin space, large energy loss, difficult vibration and noise control, high construction and maintenance costs, etc. These defects have led ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B63H1/18H02K16/02
CPCB63H2005/1258B63H2001/165B63H1/16
Inventor 严新平欧阳武刘正林梁兴鑫
Owner WUHAN UNIV OF TECH
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