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Double-rotor pump-jet propeller and advancing tool adopting same

A dual-rotor pump and propeller technology, which is applied in ship propulsion, propulsion parts, ship parts, etc., can solve the problems of limited installation space of the motor stator, complex structure of the external duct, and reduced propulsion efficiency of the propeller, etc. The effect of maintenance, saving production and maintenance costs, and improving propulsion efficiency

Inactive Publication Date: 2021-06-01
武汉波依迈科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

From a structural point of view, the structure of the external conduit is complex, and the corresponding manufacturing is extremely difficult, and the electric drive device is placed inside the conduit, which greatly reduces the flow area of ​​the conduit and reduces the propulsion efficiency of the propeller
[0004] The Chinese patent "Counter-rotating Shaftless Rim Drive Propeller" (CN105109650B) discloses a counter-rotating propeller. It is not difficult to find out from the structure that the installation space of its motor stator and rotor is extremely limited, and the power and volume of the motor are limited. Direct relationship, and in order to reduce water resistance, the conduit is required to be as thin as possible, which further restricts the installation space of the motor part, so the power of the propeller is also greatly limited

Method used

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  • Double-rotor pump-jet propeller and advancing tool adopting same
  • Double-rotor pump-jet propeller and advancing tool adopting same
  • Double-rotor pump-jet propeller and advancing tool adopting same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Such as Figure 1~3 As shown, a double-rotor pump-jet propeller includes a rotating shaft 1, a housing 4, a front end cover 11 and a tail end cover 13. The rotating shaft 1 is hollow and has a trumpet-like structure, and includes a large end portion 1-11, The small end portion 1-3 and the gradual change portion 1-2 connecting the large end portion 1-1 and the small end portion 1-3, the inner cavity of the large end portion 1-1 is fixedly equipped with a first propeller 7; the rotating shaft 1 The bearing 5 is movably connected to the end caps on both sides of the housing 4, and the side of the bearing 5 is provided with a sealing assembly 19; a first power drive device is fixed between the housing 4 and the rotating shaft 1, and the first power drive The device includes a motor stator 3 and a motor rotor 2, the motor rotor 2 is fixed on the gradual change part 1-2 of the rotating shaft 1; the motor stator 3 is fixed on the housing, and provides an axial rotating magneti...

Embodiment 2

[0034] Such as Figure 4~6 As shown, a double-rotor pump-jet propeller includes a rotating shaft 1, a housing 4, a front end cover 11 and a tail end cover 13. The rotating shaft 1 is hollow and has a trumpet-like structure, and includes a large end portion 1-11, The small end portion 1-3 and the gradual change portion 1-2 connecting the large end portion 1-1 and the small end portion 1-3, the inner cavity of the gradual change portion 1-2 is fixedly equipped with a first propeller 7; the rotating shaft 1 passes through The magnetic bearing 5 is movably connected in the end caps on both sides of the housing 4, and a first power driving device is fixed between the housing 4 and the rotating shaft 1, and the first power driving device includes a motor stator 3 and a motor rotor 2, The motor rotor 2 is fixed on the gradual change part 1-2 of the rotating shaft 1; the motor stator 3 is fixed on the housing, providing an axial rotating magnetic field for the motor rotor 2, driving t...

Embodiment 3

[0038] Such as Figure 7 As shown, a traveling tool includes a body 21 and any one of the dual-rotor jet pump propellers 20 mentioned in the above embodiments, the first support frame 17 of the dual-rotor jet pump propeller 20 is integrated with the body 21 Designed, fixed on the body 21, the connecting rod 10 is connected with the second power drive device in the body 21 to provide rotational power, the main propulsion force in the navigation process, the second power drive device is an internal combustion engine 22; in order to improve the submarine's For balance, the casing 4 of the dual-rotor jet pump propeller 20 is provided with hydrofoils 23; in order to further reduce the noise during driving, sound-absorbing materials can be laid on the casing 4.

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Abstract

The invention discloses a double-rotor pump-jet propeller. The pump-jet propeller comprises a rotating shaft, end covers and a shell. The pump-jet propeller is characterized in that: the rotating shaft is of a hollow and trumpet-shaped structure, is movably fixed in the end covers on the two sides of the shell through a bearing, and comprises a large end part, a small end part and a gradual change part connecting the large end part and the small end part; a first propeller is fixedly mounted at the large end part or the gradual change part; a first power driving device used for driving the rotating shaft to rotate is fixedly installed in the space between the rotating shaft and the shell; a second propeller is contained in the rotating shaft and located at the front end or the rear end of the first propeller; the second propeller is movably connected into a supporting seat on a flow guide cover through a connecting rod, and the flow guide cover is fixedly installed on the shell; and the connecting rod is driven by a second power driving device to rotate. The invention provides the high-power, high-efficiency and low-noise double-rotor pump-jet propeller which is designed by fully utilizing the Venturi effect and the structural characteristics of a pipeline.

Description

technical field [0001] The invention belongs to the field of fluid propellers, and in particular relates to a high-power, high-efficiency double-rotor pump-jet propeller designed by utilizing the Venturi effect and the structural characteristics of pipelines and a traveling tool using the propeller. Background technique [0002] As an effective energy-saving scheme for ship propulsion, contra-rotating propellers have been receiving much attention. The counter-rotating propellers are arranged on the propulsion axis of the propellers, one behind the other. The diameter of the front propeller is larger than the diameter of the rear propeller, and The direction of rotation of the two propellers is opposite. We know that in the traditional single-propeller propulsion system, the vortex energy in the propeller wake cannot be utilized, while in the counter-rotating propeller propulsion system, the vortex energy produced by the front propeller is not utilized. The vortex energy of t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B63H11/04
CPCB63H11/04B63H2011/043
Inventor 王前进
Owner 武汉波依迈科技有限公司
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