CN112829913A

CN112829913A - High-thrust rim propeller and advancing tool adopting same

Info

Publication number: CN112829913A
Application number: CN202110112297.0A
Authority: CN
Inventors: 王前进
Original assignee: Wuhan Boymai Technology Co ltd
Current assignee: Wuhan Boymai Technology Co ltd
Priority date: 2021-01-27
Filing date: 2021-01-27
Publication date: 2021-05-25

Abstract

The invention discloses a high-thrust rim propeller, which comprises a rotating shaft, a shell, a motor stator and a motor rotor, wherein the rotating shaft is arranged on the shell; the rotating shaft is in a hollow and horn-shaped structure and is movably arranged in the end covers at the two sides of the shell through bearings; a sealing component is arranged outside the bearing; the inner ring of the large end part of the rotating shaft is fixedly provided with a propeller, and the outer ring of the small end part is fixedly provided with a motor rotor; the motor stator is fixedly arranged on the shell and corresponds to the rotor; the rear end of the propeller is provided with a fairing, and the fairing is fixed on the air guide sleeve through a connecting rod penetrating through a central channel of the propeller; the air guide sleeve is fixedly arranged on the shell. The invention provides a rim propeller which has good sealing performance, combines the structural characteristics of a pipeline and a propeller, utilizes the Venturi effect, excellently solves the problems of contradiction between a high-power driving device in the rim propeller and limited installation space and the utilization of vortex energy in the pipeline, ensures the small volume of the rim propeller, and greatly improves the thrust and the propulsion efficiency.

Description

High-thrust rim propeller and advancing tool adopting same

Technical Field

The invention belongs to the field of fluid propellers, and particularly relates to a rim propeller which is good in sealing performance, large in thrust, high in efficiency and stable in operation, and a travelling tool adopting the propeller.

Background

In recent years, with the development of maritime work and water entertainment, the performance requirement on the propeller is higher and higher, the disadvantages of the traditional shaft-driven propeller are gradually highlighted, and the working requirement cannot be better met. Such as the multiple components, complex structure, large cabin footprint, high energy consumption, difficult vibration and noise control, high construction and maintenance costs, etc., of conventional shaft driven propellers have led to a gradual eye shift to more advanced shaftless rim propulsion systems.

The rim driving propeller is divided into two forms of no hub and hub, and at present, in order to reduce resistance and solve the problem of winding of sundries or cables, the form of no hub is adopted. The rim propeller mainly comprises a stator and a rotor of a motor, wherein the rotor is cylindrical, propeller blades are arranged in the rotor, magnetic poles in the rotor are uniformly distributed on the radial circumference of the propeller, the stator is directly arranged on the outer ring of the propeller and corresponds to the magnetic poles, and the rotor is driven to drive the propeller to rotate after being electrified; in a single propeller propulsion system, the vortex energy in the wake flow of the propeller cannot be utilized and cannot be converted into effective propulsion power, and meanwhile, the dumping moment is generated to influence the stability of the propeller; in addition, the bearing is used as a main component for supporting the rotating shaft, so that the strong loading capacity is provided, the rotation precision of the rotating shaft is guaranteed, however, when the motor runs underwater, in order to prevent water and other impurities from entering the bearing and the motor and prevent the lubricant from running off, the bearing generally adopts contact sealing, the friction coefficient of the sealing mode is large, the power ratio of extra loss is high, and a large amount of heat is generated, so that the conversion efficiency of the motor is greatly influenced.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides the rim propeller which has good sealing performance, combines the characteristics of a pipeline and a propeller and is designed to have high power, high efficiency and stable operation by utilizing the Venturi effect.

In order to achieve the purpose, the invention adopts the technical scheme that:

a high-thrust rim propeller comprises a rotating shaft, a shell, a motor stator and a motor rotor, wherein the rotating shaft is of a hollow and horn-shaped structure and is movably arranged in end covers at two sides of the shell through bearings; the side edge of the bearing is provided with a sealing assembly, and the sealing assembly comprises a concave pole and a convex pole; one of the concave pole or the salient pole is fixed on the rotating shaft; the outer side of the concave pole is provided with a permanent magnet, and the inner side of the concave pole is provided with a U-shaped or V-shaped groove; the tops of the salient poles are arranged in the grooves, and U-shaped or V-shaped gaps are formed between the salient poles and the grooves; magnetic fluid is filled in the gap; the magnetic fluid is accumulated at the bottom of the groove under the action of a magnetic field provided by the magnetic pole at the inner side of the permanent magnet, and a U-shaped or V-shaped sealing strip is formed between the salient pole and the concave pole by utilizing the principle of static pressure balance of the fluid in the U-shaped pipe; the inner ring of the large end part of the rotating shaft is fixedly provided with a propeller, and the outer ring of the small end part of the rotating shaft is fixedly provided with a motor rotor; the motor stator is fixedly arranged on the shell and corresponds to the motor rotor; a fairing is arranged at the rear end of the propeller and fixed on the air guide sleeve through a connecting rod penetrating through a central channel of the propeller; the air guide sleeve is fixedly arranged on the shell; the beneficial effects are that: the structural forms of the salient poles and the concave poles jointly create a gap with a U-shaped section, and magnetic fluid is filled in the gap; the magnetic poles on the inner side of the permanent magnet provide a radial magnetic field for the magnetic fluid in a close distance, so that the two ends of the magnetic fluid generate a potential energy moving radially outwards, the magnetic fluid is further promoted to be accumulated at the bottom of the groove to form a sealing strip, the static pressure balance of the fluid in the U-shaped pipe is realized, the sealing strip is wholly deviated to achieve new balance under the condition that the pressure difference exists between the two ends of the magnetic fluid, the sealing surface cannot be damaged, and the sealing effect is not influenced; when the salient pole or the concave pole in a rotating state drives the magnetofluid to rotate, the magnetofluid can generate centrifugal force, the direction of the centrifugal force is also outward in the radial direction, the magnetofluid enhances the potential accumulated to the bottom of the concave pole under the equidirectional superposition effect of the magnetic force and the centrifugal force, according to the principle of static pressure balance of the fluid in the U-shaped tube, the pressure difference between two ends of the magnetofluid is zero, when the pressure difference is not zero, the magnetofluid can be wholly deviated in a gap to form liquid level height difference between two ends, so that the balanced pressure difference is realized, the higher the rotating speed is, the larger the centrifugal force is, the extremely small liquid level height difference can resist extremely strong external pressure difference, the extremely good dynamic sealing effect can be ensured, the problem that the sealing thickness is stretched and thinned and punctured due to the influence of the centrifugal force of the magnetofluid in a high-speed state is not worried about, the stronger the capacity of resisting the external pressure difference, the more suitable the working condition that the external pressure difference increases along with the increase of the rotating speed, and the self-regulation capacity is strong; if the distance between the outer ring and the inner ring of the bearing is large enough, the sealing assembly can be directly integrated between the outer ring and the inner ring of the bearing to form a sealing bearing for use in order to simplify the structure; the rotating shaft is of a hollow and horn-shaped structure, in the operation process, fluid enters from the large end part and passes through the gradual change part, the speed rises due to the relation of change of the inrush sectional area, the speed reaches the maximum value at the narrowest part, the static pressure reaches the minimum value, so that the fluid is sprayed out from the small end part at a high speed, the spraying speed of the water outlet is increased by utilizing the Venturi effect, the propelling efficiency is improved, particularly, the horn-shaped structure of the rotating shaft is required to be pointed out, the installation space of the motor part is greatly increased, the rotor is fixedly installed at the small end part, the stator is fixedly installed on the shell and corresponds to the rotor. The rim propeller breaks through the conventional design and is reasonably arranged, the contradiction between a high-power stator and a high-power rotor in the rim propeller and a narrow installation space is well solved, and the propelling power and the propelling efficiency of the rim propeller are greatly improved while the small volume of the rim propeller is ensured; the fluid passing through the propeller has backward movement and also has a movement rotating relative to the center of the rotating shaft, the rotating movement of the fluid is harmful, so that the ship body has a dumping moment, and the rotating movement can consume a part of power of the motor.

Preferably, a pressure relief groove is formed in the end face of the end cover, which is in contact with the air guide sleeve; the beneficial effects are that: at the propeller in-process of marcing, because the rivers impact of front end, can make the water pressure increase of propeller end, produce powerful impact to seal assembly, especially when marcing at a high speed, and the pressure relief groove is as an open-ended return circuit, can march the water-washed pressure drainage to the outside of in-process end with the propeller, and then alleviates seal assembly's pressure, guarantees the good sealing performance of propeller, and the rivers in the pressure relief groove can also take away a heat, improves the radiating effect of propeller.

Preferably, the commutator segment and the connecting rod are integrally processed; the beneficial effects are that: the production and processing flow is simplified, and the product can be manufactured by adopting a casting mode.

Preferably, a heat dissipation structure is arranged on the rotating shaft; the cooling structure has the advantages that a large amount of heat needs to be dissipated in the running process of the motor stator, if the heat is not dissipated in time, the performance of the motor is affected, a coil can be wound off under severe conditions, just in time of motor running, the rotating shaft can rotate at a high speed to drive the propeller, under the action of the propeller, a large amount of fluid can pass through the flow channel, most of heat can be taken away, the gradual change portion serves as an important component part for completing the Venturi effect, the cooling structure such as the groove or the blade is arranged on the gradual change portion, the contact area of the rotating shaft and air can be increased, the flowing of hot air in the motor can be accelerated, and the cooling efficiency.

Preferably, the screw is assembled and combined by a plurality of rim blades, and the beneficial effects are that: the single wheel rim blade is more convenient to manufacture, the manufacturing difficulty of the propeller is reduced, and the manufacturing cost is saved.

Preferably, a carrier liquid bar for increasing the contact area with the magnetic fluid is arranged in the gap and is fixed on the rotating component; the beneficial effects are that: the liquid carrying bar is used as an extension part of the concave pole or the convex pole, so that the surface contact area of the concave pole or the convex pole and the magnetic fluid is indirectly increased, the capacity of the concave pole or the convex pole for driving the magnetic fluid to rotate is enhanced, the magnetic fluid can obtain more energy to rotate, and a larger centrifugal force is generated; the carrier liquid bar can be made of a material with a sponge structure, such as high-density sponge, and is mainly characterized by flexibility and porosity, fluid can freely shuttle in pores of the carrier liquid bar without affecting the fluidity of the carrier liquid bar and further without affecting the sealing effect of the fluid, and more importantly, the sponge structure of the carrier liquid bar is criss-cross, so that the capacity of the rotating part for driving the magnetic fluid to rotate is greatly increased; in general, the carrier strip may be replaced with batt fiber or down for cost savings.

Preferably, the salient pole is fixed on the outer ring through a support ring, and the concave pole and the permanent magnet are connected into a whole and fixed on the inner ring through a rotating ring; the beneficial effects are that: the permanent magnet and the concave pole are connected into a whole to further shorten the distance between the magnetic pole and the magnetic fluid, so that the magnetic fluid can obtain larger magnetic force and generate stronger sealing performance; the concave pole is fixed on the rotating component, on one hand, the magnetic fluid is accumulated towards the bottom of the groove under the action of a magnetic field, the magnetic particles in the magnetic fluid are distributed unevenly under the action of the magnetic field, the concentration of the magnetic particles is denser at the part closer to the magnetic pole, and further the part closer to the magnetic pole is, the viscosity of the magnetic fluid is higher, compared with the salient pole, the concave pole rotates to drive the magnetic fluid to obtain centrifugal force, so that the sealing performance is higher in a dynamic sealing state, and the viscosity of the magnetic fluid close to the salient pole is small, the friction force between the magnetic fluid and the salient pole is small during rotation, and the heat generated during operation is relatively small; on the other hand, in the sealing structure, the concave part is arranged at the outer ring of the salient pole, the surface contact area of the concave pole and the magnetic fluid is larger than that of the salient pole and the magnetic fluid, the generated static friction force is large, the transmitted energy is large, the capacity of driving the magnetic fluid to rotate is better than that of the salient pole, and in the rotating process, the speed of the concave pole line at the outer ring is larger than that of the salient pole at the inner ring, the generated centrifugal force is larger, and the resistance to external pressure difference is better facilitated; the concave pole is preferably made of flexible materials, such as high-elasticity polymers with strong plasticity, more specifically polytetrafluoroethylene, which is resistant to high temperature and low temperature, and when the concave pole is made of flexible materials, the annular permanent magnet can be used as a support to provide powerful support for the concave pole, so that the concave pole is ensured not to deform during high-speed operation, the sealing effect is further ensured, and the number of parts is reduced; it is especially pointed out that, because the magnetic poles of the permanent magnet are respectively positioned at the inner side and the outer side, the inner side magnetic pole provides a magnetic field for the magnetic fluid, and the outer side magnetic pole can also provide a magnetic field, if a U-shaped gap is formed in the outer space of the permanent magnet, the magnetic grease can be filled in the non-Newtonian magnetic fluid with high viscosity and low cost, and an auxiliary sealing strip is formed under the action of centrifugal force.

Preferably, a mud throwing ring is arranged on the outer side of the sealing assembly and is fixed on the rotating shaft; the beneficial effects are that: the high-speed rotatory mud ring of getting rid of can utilize the effect of centrifugal force to throw away large granule impurity such as silt of aquatic, avoids impurity to get into the fluid seal area in, influences sealing performance.

Preferably, a flow guide hydrofoil is arranged on the shell; the beneficial effects are that: the contact area of the propeller and the water flow is increased, the radiating effect of the propeller is further increased, and the running stability of the propeller is guaranteed.

A travelling tool comprises a body and a propeller for providing travelling power for the body, wherein the propeller is a rim propeller as claimed in any one of claims 1-9; the beneficial effects are that: the advancing tool comprises an aircraft or a surface ship and the like, the rim propeller has small volume, high power and high propelling efficiency, and particularly can provide powerful power for the advancing tool taking water as a circulating medium; the rim propeller has low noise and small vibration, and can provide comfortable driving experience for underwater moving tools; it should also be pointed out that this rim propeller is small, and the installation is convenient, establishes the equipment of electric power such as battery or generator in the body and provides the power for it, can greatly save the space in cabin in large-scale boats and ships, and convenient further optimization ship type improves the performance.

Compared with the prior art, the invention has the beneficial effects that: 1. the rim propeller increases the jet speed of the water outlet by utilizing the Venturi effect, improves the propelling efficiency, and simultaneously skillfully utilizes the structural characteristics of the rotating shaft to arrange the motor part at the small end part, thereby greatly increasing the installation space of the motor and improving the power of the propeller; 2. the detachable propeller is adopted by the rim propeller, so that the rim propeller is convenient to manufacture and maintain, and the manufacturing and maintenance cost is saved; 3. the flange propeller combines the structural characteristics of the propeller, and the commutator segments are ingeniously arranged between the propeller and the rotating shaft, and the design of the commutator segments ensures that the whirling energy of the fluid in the rotating process is completely converted into the propelling power, thereby improving the propelling efficiency, eliminating the dumping moment and ensuring the running stability of the propeller; 4. the advancing tool adopting the propeller has low noise and small vibration, the propelling part occupies small space, and the linear optimization of the body is convenient; 5. the sealing component adopts magnetic fluid sealing, and has good sealing performance, low friction coefficient and strong adaptability.

Drawings

FIG. 1 is a schematic view of the internal structure of a high-thrust rim thruster according to a first embodiment;

FIG. 2 is a schematic view of an external structure of the high-thrust rim thruster in accordance with the first embodiment;

FIG. 3 is a schematic structural diagram of the seal assembly according to the first embodiment;

FIG. 4 is a schematic view of an equilibrium state of the seal assembly according to the first embodiment in the presence of a pressure differential;

FIG. 5 is a schematic structural view of the integrated rim type propeller according to the first embodiment;

FIG. 6 is a schematic structural diagram of the combined rim type propeller according to the first embodiment;

FIG. 7 is a schematic structural diagram of the rectifying plate according to the first embodiment;

FIG. 8 is a schematic structural view of the pod in accordance with a first embodiment;

FIG. 9 is a schematic side view of the watercraft of the second embodiment;

FIG. 10 is a schematic view of the rear portion of the watercraft of the second embodiment;

in the figure: 1. a rotating shaft; 2. a motor rotor; 3. a motor stator; 4. a housing; 5. a bearing; 6. a seal assembly; 6-1, salient pole; 6-2, magnetic fluid; 6-3, a concave pole; 6-4, permanent magnets; 6-5, rotating the ring; 6-6, carrying liquid bar; 6-7, a support ring; 7. a propeller; 7-1, convex strips; 8. a clamp spring; 9. a commutator segment; 10. a connecting rod; 11. a pod; 12. a front end cover; 13. a tail end cover; 14. a shaft sleeve; 15. a pressure relief groove; 16. throwing mud rings; 17. a flow guiding hydrofoil; 18. a propeller; 19. a body.

DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example one

As shown in fig. 1 to 8, a high-thrust rim propeller comprises a rotating shaft 1, a shell 4, a motor stator 3 and a motor rotor 2, wherein the rotating shaft 1 is of a hollow and horn-shaped structure, a large end part of the rotating shaft 1 is used for fixedly mounting a propeller 7, and a small end part of the rotating shaft is used for fixedly mounting the motor rotor 2; the rotating shaft 1 is movably arranged in the shell 4 through a bearing 5, a front end cover 12, a shaft sleeve 14 and a tail end cover 13; the motor stator 3 provides a rotating magnetic field for the motor rotor 2, and drives the rotor 2 to drive the rotating shaft 1 to rotate; the sealing assembly 6 comprises a concave pole 6-3 and a convex pole 6-1, a permanent magnet 6-4 is arranged on the outer side of the concave pole 6-3, the concave pole 6-3 and the permanent magnet 6-4 are connected into a whole and fixed on the rotating shaft 1 through a rotating ring 6-5, a U-shaped groove is formed in the concave pole 6-3, and the concave pole 6-1 is formed by pouring a flexible material, such as silica gel, polytetrafluoroethylene and the like; the salient pole 6-1 is fixed on the end cover through a support ring 6-7, the top of the salient pole is arranged in the groove, and a U-shaped gap is formed between the salient pole and the groove; the gap is filled with magnetic fluid 6-2; the permanent magnet 6-4 is an annular permanent magnet, is magnetized in a radiation mode and is a monopole radiation ring; the magnetic fluid 6-2 overcomes the gravity to accumulate towards the bottom of the groove under the action of a radial magnetic field provided by the permanent magnet 6-4 at the outer side of the concave pole 6-3, and a U-shaped sealing belt is formed between the salient pole 6-1 and the concave pole 6-3 by utilizing the principle of static pressure balance of the fluid in the U-shaped pipe; in order to increase the capacity of the concave electrode 6-3 for driving the magnetic fluid 6-2 to rotate, a carrier liquid strip 6-6 is bonded on the concave electrode 6-3, and the carrier liquid strip 6-6 is made of fine sponge; a mud throwing ring 16 is arranged on the outer side of the sealing assembly 6, and particle impurities in water can be thrown out by using centrifugal force; the propeller 7 is of an integral wheel rim type, convex strips 7-1 are arranged on the wheel rim, the convex strips and the large end part of the rotating shaft 1 are detachably connected, and the propeller 7 with a large diameter can be combined; the small end part of the rotating shaft 1 is provided with a motor rotor 2 which is used as a motor component in a conventional design, the motor stator 3 comprises a stator core and a stator winding, the stator core is fixedly arranged in an upper shell 4 and corresponds to the motor rotor 2, and the stator winding wound on the stator core generates radial electromagnetic force after being electrified to drive the motor rotor 2 to rotate; the motor rotor 2 further comprises a rotor core, the rotor core is cylindrical and annular, the magnetic steel substrates are uniformly distributed on the outer ring of the rotor core, the rotor core provides an electromagnetic loop for the magnetic steel substrates, magnetic leakage is reduced, and the rotor core is sleeved on the small end portion of the rotating shaft; the rear end of the propeller 7 is provided with a fairing 9, the fairing 9 is fixed in a flow guide sleeve 11 by a connecting rod 10 penetrating through the center of the propeller 7, the flow guide sleeve 11 is fixedly arranged in the shell 4, and the fairing 9 and the connecting rod 10 can be integrally designed and processed; in order to reduce the pressure of the sealing assembly and ensure the good sealing performance of the propeller, a pressure relief groove 15 is arranged on the end surface of the contact end of the air guide sleeve 11 and the front end cover 12; in order to ensure the operation stability of the propeller under water, the shell is provided with a flow guide hydrofoil 17.

In the operation process, fluid enters from the big end part of the rotating shaft and passes through the propeller 7, and then the fluid has backward movement and also has a movement rotating relative to the center of the rotating shaft, the rotation movement is harmful, so that the ship body has a dumping moment, and the rotation movement can consume a part of power of the motor; on the other hand, according to the venturi effect of fluid, because there is some pressure energy to turn into kinetic energy, the fluid velocity of flow in the pivot binding off portion can increase, and then impels the reverse thrust of cowling piece can increase, has further improved the thrust of propeller.

According to the principle of static pressure balance of fluid in the U-shaped pipe, when the sealing belt is in a static sealing state, the magnetic fluid 6-2 keeps balance under the action of the magnetic pole above the concave pole 6-3; when no pressure difference exists between the two ends of the magnetic fluid 6-2, the height difference h of the liquid level at the two ends is zero, when the pressure at any end is increased, the magnetic fluid 6-2 integrally moves to the side with low pressure until the height difference h of the liquid level reaches a certain value, and the new balance is achieved under the action of the magnetic force under the external pressure difference; when the sealing tape is in a dynamic sealing state, the rotating concave pole 6-3 drives the magnetic fluid 6-2 to rotate, the magnetic fluid 6-2 is under the action of magnetic force and centrifugal force, the magnetic fluid and the centrifugal force are superposed in the same direction to jointly provide a force field to balance pressure difference, the higher the rotating speed is, the larger the centrifugal force is, the smaller the liquid level height difference h can resist extremely strong external pressure difference change, the excellent dynamic sealing effect is ensured, and the problem that the sealing failure is caused by the fact that the fluid is broken down due to the stretching and thinning of the sealing thickness caused by the influence of the centrifugal force in a high-speed state is avoided.

Example two

As shown in fig. 9 to 10, an underwater traveling tool includes a body 19 and a propeller 18 for providing a traveling power to the body 19, wherein a cross section of a tail of the body 19 is W-shaped, the W-shaped cross section extends to a position close to a head of the body 19, and a straight-through flow channel is formed in a longitudinal direction of a middle portion of the body 19; the propeller 18 is any one of the above rim propellers and is arranged in a flow channel at the stern of the body 19, so that the cabin space inside the body 19 occupied by the traditional propulsion system is effectively reduced, and the space utilization rate is improved; the main body 19 is also provided with a storage battery or a generator and other devices for providing power and a driving and controlling device of the motor part of the rim propeller. When the body 19 advances in water, water can directly enter the rim propeller from the bow runner, so that the extra work of the loss required by bottom water absorption in the traditional pump-jet propeller is avoided, the utilization rate of power is improved, and more power is converted into thrust.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a high thrust rim propeller, includes pivot, casing, motor stator and electric motor rotor, its characterized in that: the rotating shaft is of a hollow and horn-shaped structure and is movably arranged in the end covers at two sides of the shell through bearings; the side edge of the bearing is provided with a sealing assembly, and the sealing assembly comprises a concave pole and a convex pole; one of the concave pole or the salient pole is fixed on the rotating shaft; the outer side of the concave pole is provided with a permanent magnet, and the inner side of the concave pole is provided with a U-shaped or V-shaped groove; the tops of the salient poles are arranged in the grooves, and U-shaped or V-shaped gaps are formed between the salient poles and the grooves; magnetic fluid is filled in the gap; the magnetic fluid is accumulated at the bottom of the groove under the action of a magnetic field provided by the magnetic pole at the inner side of the permanent magnet, and a U-shaped or V-shaped sealing strip is formed between the salient pole and the concave pole by utilizing the principle of static pressure balance of the fluid in the U-shaped pipe; the inner ring of the large end part of the rotating shaft is fixedly provided with a propeller, and the outer ring of the small end part of the rotating shaft is fixedly provided with a motor rotor; the motor stator is fixedly arranged on the shell and corresponds to the motor rotor; a fairing is arranged at the rear end of the propeller and fixed on the air guide sleeve through a connecting rod penetrating through a central channel of the propeller; the air guide sleeve is fixedly arranged on the shell.

2. A high thrust rim thruster according to claim 1 wherein: and a pressure relief groove is formed in the end face of the contact end of the air guide sleeve and the end cover.

3. A high thrust rim thruster according to claim 1 wherein: the commutator segments and the connecting rods are integrally processed.

4. A high thrust rim thruster according to claim 1 wherein: and a heat dissipation structure is arranged on the rotating shaft.

5. A high thrust rim thruster according to claim 1 wherein: the propeller is formed by assembling and combining a plurality of rim blades.

6. A high thrust rim thruster according to claim 1 wherein: and a liquid carrying bar for increasing the contact area with the magnetic fluid is arranged in the gap and is fixed on the rotating component.

7. A high thrust rim thruster according to claim 1 wherein: the salient pole is fixed on the end cover through the support ring, and the concave pole and the permanent magnet are connected into a whole and fixed on the shaft sleeve through the rotating ring.

8. A high thrust rim thruster according to claim 1 wherein: and a mud throwing ring is arranged on the outer side of the sealing assembly and is fixed on the rotating shaft.

9. A high thrust rim thruster according to claim 1 wherein: the shell is provided with a flow guide hydrofoil.

10. A travel tool, characterized by: the high-thrust rim propeller comprises a body and a propeller used for providing advancing power for the body, wherein the propeller is the high-thrust rim propeller as claimed in any one of claims 1-9.