CN219008094U - A Conduit Balanced Torque Underwater Magnetic Coupling Energy-saving Propeller - Google Patents

Abstract

The utility model provides a conduit balance torque type underwater magnetic coupling energy-saving propeller, which belongs to the technical field of underwater robots and includes a balance torque module, a magnetic coupling propulsion module and a propeller hub energy-saving module. The balance torque module includes a conduit, The middle end of the casing, the front stator of the airfoil and the fin of the airfoil. The magnetic coupling propulsion module includes the head end of the casing, the water lubricated bearing, the tail end of the casing, the fixed cover, the angular contact bearing, the motor stator, and the motor rotor , motor output shaft, propeller output shaft, inner magnetic ring, outer magnetic ring, shaft sleeve, fixed end cover, short screw, inner magnetic ring fixed end, outer magnetic ring fixed end, threaded skeleton, the propeller hub energy-saving module includes Propeller, hubcap fins, long screws. The beneficial effect of the utility model is: it has the advantages of simple and reasonable structure, low overall torque, strong energy saving, etc., can improve the propulsion efficiency of the aircraft, increase the energy saving performance of the propeller, ensure the smooth progress of underwater operations, and is convenient to use.

Description

A Conduit Balanced Torque Underwater Magnetic Coupling Energy-saving Propeller

technical field

The utility model relates to an underwater robot, in particular to a balanced torque type magnetic coupling propeller of the underwater robot.

Background technique

my country is rich in marine resources and is a huge treasure house of natural resources. The exploration and development of marine resources is imminent. Autonomous Underwater Vehicle (AUV) is an important tool for the investigation and development of marine resources, and has many military and civilian uses. In order for the aircraft to maintain a certain speed and sail forward in the water, a certain thrust must be provided to overcome the resistance it suffers. Devices or mechanisms that convert power from energy sources into power to push a boat forward are collectively referred to as underwater thrusters.

The underwater propeller industry is technically difficult and has great market potential. my country's technology research and development in this industry is still in a relatively backward state. At present, the underwater propellers with balanced torque used in the world are mostly counter-rotating propellers. This kind of thruster is noisy, and the design structure is loaded down with trivial details, and the structure is complex and easily damaged and difficult to maintain.

Propeller propeller is the most commonly used driving device for underwater robots, and its dynamic sealing problem is difficult to solve. At present, the commonly used method to solve the problem of propeller dynamic sealing is mechanical seal, that is, to use gray ring, oil seal or rubber sealing ring on the propeller shaft, but the mechanical seal has large friction resistance and low transmission efficiency during the transmission process, and the transmission efficiency affected by seawater pressure. A method based on the principle of magnetic coupling to solve the problem of propeller dynamic sealing has also been studied in depth. The basic principle is that a number of permanent magnets are respectively embedded on the driving shaft (generally the motor output shaft) and the driven shaft (generally the propeller drive shaft). Through reasonable arrangement, the attractive force will be generated between the two shafts, and then the spacer will be used to separate the two and ensure the watertightness of the motor. In this way, the driven shaft can be rotated synchronously with the driving shaft through the force of the magnetic field.

Contents of the invention

The utility model provides a conduit balanced torque type underwater magnetic coupling energy-saving propeller, which has the advantages of simple and reasonable structure, low overall torque, strong energy saving, etc., can improve the overall efficiency of the propeller and the navigation body, and can replace ordinary conduit propeller propulsion The propeller increases the overall energy-saving performance of the thruster without increasing the structural complexity, which can ensure the smooth progress of underwater operations and is easy to use.

In order to solve the above technical problems, the embodiment of the present application provides a balanced torque underwater magnetic coupling energy-saving propeller, including a balanced torque module, a magnetic coupling propulsion module and a propeller hub energy-saving module, characterized in that the balanced torque module Including the duct, the middle end of the shell, 5 airfoil front stators and 5 airfoil fins. The magnetic coupling thruster module includes a shell head end, a water-lubricated bearing, a shell tail end, a fixed cover, an angular contact bearing 1, an angular contact bearing 2, an angular contact bearing 3, a motor stator, a motor rotor, and a motor output shaft , Propeller output shaft, inner magnetic ring, outer magnetic ring, shaft sleeve, fixed end cover, short screw, inner magnetic ring fixed end, outer magnetic ring fixed end, threaded skeleton. The propeller hub energy-saving module includes propellers, hub cap fins and long screws.

The conduit, the middle end of the casing, the five airfoil front stators and the five airfoil fins are an integrated structure, the motor stator is placed in the middle end of the casing, fixed by special glue, and the motor rotor is installed At the front end of the output shaft of the motor, the rear end of the output shaft is connected to the shaft sleeve. There is an inner magnetic ring fixed end and an inner magnetic ring on the shaft sleeve. The right side is fixed by a fixed end cover connected by a short screw. The convex groove is connected to the fixed end of the outer magnetic ring, and the outer magnetic ring is sealed with a threaded skeleton and special glue. The rear end of the housing shown is connected to the middle end of the locking housing through a water-lubricated bearing, and the rear end of the housing is fixed on the propeller drive through an angular contact bearing. On the shaft, the hub cap fin is connected to the propeller by long screws.

As a preferred embodiment of this solution, the airfoil front stator and airfoil fins in the balance torque module are asymmetrical airfoils, and have a specific inclination angle parallel to each other, which is the same as the pitch angle at the root of the propeller. equal.

As a preferred embodiment of this solution, the airfoil front stator, the conduit, the middle end of the casing, and the airfoil fins in the balance torque module are an integrated structure, and exhibit periodic symmetry around the central axis.

As a preferred embodiment of this solution, the middle end of the housing and the tail end of the housing in the magnetic coupling propulsion module are connected and fixed by angular contact bearings and water-lubricated bearings, and the tail end of the housing and the propeller are integrated structures.

As a preferred embodiment of this solution, the permanent magnetic coupling body is in the form of a cylindrical nest, and is separated by a shell in the middle with a gap left.

As a preferred embodiment of this solution, the inner magnetic ring in the magnetic coupling propulsion module is connected to the fixed end of the inner magnetic ring, and fixed on the motor output shaft through a bushing, and the right end of the motor output shaft has a fixed end cover locked by a short screw .

As a preferred embodiment of this solution, the propeller in the propeller hub energy-saving module is integrated with the tail end of the housing.

As a preferred embodiment of this solution, the hub cap fin is an asymmetric airfoil and has the same number of blades as the propeller, and the installation position of the hub cap fin leading edge is the center position of the edge of the adjacent blade of the propeller, and along the The direction of rotation of the propeller is tilted by a specific angle equal to the pitch angle at the root of the propeller blade.

One or more technical solutions provided in the embodiments of this application have at least the following technical effects or advantages:

It has the advantages of simple and reasonable structure, low overall torque, and strong energy saving. It can improve the overall efficiency of propellers and navigation bodies, and can replace ordinary ducted propeller propellers. It can increase the overall energy-saving performance of propellers without increasing structural complexity. It can ensure the smooth progress of underwater operations and is convenient to use.

Description of drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are only some embodiments of the present utility model, and those skilled in the art can also obtain other drawings according to these drawings without any creative effort.

Fig. 1 is a schematic diagram of the energy-saving structure of the propeller hub according to the embodiment of the present application;

Fig. 2 is a schematic diagram of the balance torque structure of the embodiment of the present application;

Fig. 3 is a schematic cross-sectional view of a magnetic coupling propulsion module according to an embodiment of the present application;

In Fig. 1-Fig. 3: 1. Housing head end, 2. Housing middle end, 3. Fixed cover, 4. Angular contact bearing 1, 5. Motor stator, 6. Motor rotor, 7. Motor output shaft, 8 , Angular contact bearing 2, 9, Water lubricated bearing, 10, Shell tail end, 11, Propeller, 12, Hub cap fin, 13, Long screw, 14, Angular contact bearing 3, 15, Short screw, 16, Fixed end Cover, 17, outer magnetic ring, 18, inner magnetic ring, 19, threaded skeleton, 20, shaft sleeve, 21, inner magnetic ring fixed end, 22, outer magnetic ring fixed end, 23, 5 airfoil fins, 24 , 5 airfoil front stators, 25, propeller output shaft, 26, duct.

Detailed ways

The invention provides a conduit balanced torque type underwater magnetic coupling energy-saving propeller, which has the advantages of simple and reasonable structure, low overall torque, strong energy saving, etc., can improve the overall efficiency of the propeller and the navigation body, and can replace the common conduit propeller propeller , without increasing the structural complexity, the overall energy-saving performance of the thruster can be increased, which can ensure the smooth progress of underwater operations and is easy to use.

In order to better understand the above-mentioned technical solution, the above-mentioned technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

As shown in Figures 1-3, a conduit balanced torque underwater magnetic coupling energy-saving propeller includes a balanced torque module, a magnetic coupling propulsion module and a propeller hub energy-saving module, wherein the balanced torque module includes a conduit 26. 2 shell middle ends, 5 airfoil front stators 24 and 5 airfoil fins 23, the magnetic coupling propulsion module includes shell head end 1, water lubricated bearing 9, shell tail end 10, Fixed cover 3, angular contact bearing 14, angular contact bearing 2 8, angular contact bearing 314 motor stator 5, motor rotor 6, motor output shaft 7, propeller output shaft 25, inner magnetic ring 18, outer magnetic ring 17, shaft sleeve 20 , fixed end cover 16, short screw 15, inner magnetic ring fixed end 21, outer magnetic ring fixed end 22, thread skeleton 19, the propeller hub energy-saving module includes propeller 11, hub cap fin 12, long screw 13.

The conduit 26, the middle end 2 of the casing, the five airfoil front stators 24 and the five airfoil fins 23 are an integrated structure, and the motor stator 5 is fixed inside the middle end 2 of the casing by special glue , the motor rotor 6 is installed on the front end of the motor output shaft 7, the rear end of the output shaft is connected to the shaft sleeve 20, the inner magnetic ring fixed end 21 and the inner magnetic ring 18 are arranged on the shaft sleeve, and the fixed end cover 16 connected by the short screw 15 on the right side Fixed, the inside of the housing tail 10 is connected to the fixed end 22 of the outer magnetic ring through a convex groove, and the outer magnetic ring 17 is sealed by adding special glue to the threaded skeleton 19, and the housing tail 10 is connected and locked by a water-lubricated bearing 9 The middle end 2 of the housing and the tail end 10 of the housing are fixed on the propeller output shaft 25 through angular contact bearings 314, and the hubcap fin 12 is connected to the propeller through long screws 13.

The airfoil front stator 24 , conduit 26 , casing middle end 2 , and airfoil fins 23 are an integrated structure, and exhibit periodic symmetry around the central axis.

The airfoil front stator 24 and the airfoil fins 23 are asymmetric airfoils, and have a specific inclination angle parallel to each other, which is equal to the pitch angle at the root of the propeller.

In practical applications, the airfoil front stator 24 and the airfoil fins 23 in the balance torque module are asymmetrical airfoils. Assuming that the propeller 11 rotates clockwise as the positive direction, when the water flows through the airfoil front stator 24 and the airfoil fins 23, the pressure will be different due to the different flow velocities on the two sides of the asymmetrical airfoil, and the side with higher pressure will The force is generated on the side with less pressure, and the force generated by the five airfoil front stators 24 and airfoil fins 23 uniformly distributed on the same axis will form a stable clockwise torque, which can effectively offset the impact on the propeller 11 when it rotates. The force in the counterclockwise direction generated by the middle end 2 of the casing realizes the torque balance of the propeller in the water flow.

In practical applications, the airfoil front stator 24 in the balance torque module is inclined at the same angle as the rotation direction of the propeller 11, and when the water flows through the airfoil front stator 24, the same inclination angle will cause the water flow to produce a certain Pre-swirl, when the pre-swirled water flows into the propeller 11, the load on the blades will be reduced, which can enhance noise performance and save energy. The rotation angle is selected according to the pitch of the propeller 11.

The hub cap fin 12 in the propeller hub energy-saving module is an asymmetric airfoil and has the same number of blades as the propeller 11. The leading edge installation position of the hub cap fin 12 is the center position of the edge of the adjacent blade of the propeller, and along the The direction of rotation of the propeller 11 is inclined at a specific angle, which is equal to the pitch angle at the root of the propeller blade

In practical application, the hub cap fin 12 is connected with the propeller 11 through a long screw 13. Assuming that the propeller 11 rotates clockwise as a positive direction, the rotation will occur when the water flows through, and a hub vortex will be generated at the propeller hub and a In the low-pressure area, this phenomenon will lead to an increase in the overall energy consumption of the propeller. At this time, the hub cap fin 12 connected to the rear of the propeller 11 will guide this part of the fluid, eliminate the existence of the low-pressure hub vortex, and produce an energy-saving effect.

The tail end 10 of the housing in the magnetic coupling propulsion module is connected and fixed to the middle end 2 of the housing through the water lubricated bearing 9 and the angular contact bearing 314, and the tail end 10 of the housing and the propeller 11 are an integrated structure. The inner magnetic ring 18 of the inner magnetic ring is connected with the fixed end 21 of the inner magnetic ring, and is fixed on the motor output shaft 7 through the shaft sleeve 20, and the fixed end cover 16 connected by the short screw 15 is arranged at the right end of the motor output shaft 7.

In practical application, the fixing method of the water-lubricated bearing 9 and the angular contact bearing 314 makes the tail end 10 of the housing have good coaxiality and also has good transmission performance. The inner magnetic ring 18 and the outer magnetic ring The coaxial and parallel nesting of the rings 17 can provide a strong magnetic attraction force, which prevents the loosening of the middle end 2 of the housing.

The above description is only a preferred embodiment of the present invention, and does not limit the present invention in any form. Although the present invention has been disclosed as above with preferred embodiments, it is not intended to limit the present invention. Anyone familiar with this field Those skilled in the art, without departing from the scope of the technical solution of the present invention, can use the technical content disclosed above to make some changes or modify equivalent embodiments with equivalent changes. Any simple modifications, equivalent changes and modifications made to the above embodiments still belong to the scope of the technical solution of the present invention.

Claims (6)

1. A conduit balance torque type underwater magnetic coupling energy-saving propeller, comprising a balance torque module, a magnetic coupling propulsion module and a propeller hub energy-saving module, characterized in that the balance torque module includes a conduit (26), a housing in end (2), 5 airfoil front stators (24) and 5 airfoil fins (23), the magnetic coupling propulsion module includes the shell head (1), water lubricated bearing (9), shell Body end (10), fixed cover (3), angular contact bearing 1 (4), angular contact bearing 2 (8), angular contact bearing 3 (14), motor stator (5), motor rotor (6), motor Output shaft (7), propeller output shaft (25), inner magnetic ring (18), outer magnetic ring (17), shaft sleeve (20), fixed end cover (16), short screw (15), inner magnetic ring fixing end (21), outer magnetic ring fixed end (22), threaded skeleton (19), the described propeller hub energy-saving module includes propeller (11), hub cap fin (12), long screw (13), and the described conduit (26), the middle end of the housing (2), 5 airfoil front stators (24) and 5 airfoil fins (23) are integrated structures, and the motor stator (5) is fixed on the Inside the middle end (2) of the housing, the motor rotor (6) is installed on the front end of the motor output shaft (7), and the rear end of the output shaft is connected to the shaft sleeve (20), on which there is an inner magnetic ring fixed end (21) and an inner magnetic ring Ring (18), the right side is fixed by the fixed end cover (16) connected by short screws (15), the inside of the housing tail end (10) is connected to the outer magnetic ring fixed end (22) through a convex groove, and the screw thread The skeleton (19) is added with special glue to seal the outer magnetic ring (17), the tail end of the housing (10) is connected to the middle end (2) of the locking housing through a water-lubricated bearing (9), and the tail end (10) of the housing is passed through Angular contact bearing 3 (14) is fixed on the propeller output shaft (25), and described hub cap fin (12) is connected on the propeller (11) by long screw (13). 2. A kind of duct balance torque type underwater magnetic coupling energy-saving propeller according to claim 1, characterized in that, the airfoil front stator (24) and airfoil fins (23) in the balance torque module ) is an asymmetrical airfoil with a specific inclination angle parallel to each other, which is equal to the pitch angle at the propeller blade root. 3. A conduit balanced torque type underwater magnetically coupled energy-saving propeller according to claim 1, characterized in that the airfoil front stator (24), conduit (26), and shell in the balanced torque module The middle end of the body (2) and the airfoil fins (23) are integrated structures, and present periodic symmetry around the central axis. 4. A conduit balance torque type underwater magnetic coupling energy-saving thruster according to claim 1, characterized in that the tail end (10) of the housing in the magnetic coupling propulsion module passes through the water-lubricated bearing (9) The angular contact bearing 3 (14) is connected and fixed with the middle end (2) of the casing, and the tail end (10) of the casing and the propeller (11) are an integral structure. 5. A conduit balanced torque type underwater magnetic coupling energy-saving propeller according to claim 1, characterized in that the inner magnetic ring (18) and the inner magnetic ring fixed end (21) in the magnetic coupling propulsion module ) connection, fixed on the motor output shaft (7) by the axle sleeve (20), the fixed end cover (16) connected by the short screw (15) is arranged at the right end of the motor output shaft (7). 6. A conduit balanced torque type underwater magnetically coupled energy-saving propeller according to claim 1, characterized in that, the hub cap fin (12) in the hub energy-saving module is an asymmetrical airfoil and is aligned with the propeller (11) have the same number of blades, the installation position of the leading edge of the hub cap fin (12) is the center position of the edge of the adjacent blade of the propeller, and it is inclined at a specific angle along the direction of rotation of the propeller (11), and its size is the same as that at the root of the propeller The pitch angles are equal.

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