CN116767472B - A low-noise, detachable, and well-lubricated rim pump-jet propulsion system - Google Patents

Abstract

This invention discloses a low-noise, detachable, and well-lubricated rim-pump-jet propulsion device, belonging to the field of marine equipment propulsion technology. It includes a housing, with a stator sealing mechanism installed on the inner wall of the housing. A rotor assembly is located inside the stator sealing mechanism, and blades are installed inside the rotor assembly. Heat dissipation end caps are installed at both ends of the housing. Each end of the rotor assembly is rotatably connected to a corresponding heat dissipation end cap. The rotor assembly and the heat dissipation end caps are rotatably connected via bearings, with the heat dissipation end caps used to dissipate heat from the bearings. This invention, employing the aforementioned low-noise, detachable, and well-lubricated rim-pump-jet propulsion device, solves the cavitation and noise problems of traditional propulsion devices. It also solves the problems of blade disassembly and bearing lubrication and cooling in existing technologies, thereby extending the service life of the blades and bearings.

Description

Wheel rim pump spraying propeller with low noise, good detachability and good lubrication and heat dissipation performance

Technical Field

The invention belongs to the technical field of marine equipment propellers, and particularly relates to a low-noise detachable rim pump jet propeller with good lubricating and heat dissipation performances.

Background

With the increasing exhaustion of global fossil energy, energy conservation has become a major concern in the development of the world's propeller today. Researchers in various countries are devoted to improving the energy-saving effect of the propeller, the requirements on the performance of the propeller are higher and higher, the disadvantages of the traditional shaft-driven propeller are gradually highlighted, and the working requirements, such as that the shaft-driven propeller is driven axially, larger noise is generated due to shafting vibration when blades rotate, and the blade tips and the blade hubs can lower the water-opening efficiency and have poor cavitation resistance.

There are various kinds of underwater propellers in the market at present, and the underwater propellers can be classified into a common propeller, a conduit propeller, a pump jet propeller, a rim propeller, a coaxial counter-rotating propeller and the like according to the characteristics of the propeller. Among them, rim thrusters are attracting attention due to their higher thrust efficiency and transmission efficiency, and become a new pet in the era. In deep sea fight, compared with a traditional propulsion system, the rim propeller has better cavitation and vibration performance, and more powerful hiding capacity is given to the submarine, so that the fight capacity is obviously enhanced.

In order to improve the propulsion performance, a rim pump jet propeller is proposed in the market. The structure of the rim pump spray propeller is disclosed in China patent application (CN 112874747A), and comprises a rotating shaft, a shell, a stator and a rotor, wherein the rotating shaft is of a hollow and horn-shaped structure and is movably arranged in end covers on two sides of the shell through bearings, the rotating shaft comprises a large end part, a small end part and a gradual change part for connecting the large end part and the small end part, a propeller is fixedly arranged in an inner cavity of the large end part, the rotor is fixedly arranged on an outer ring of the gradual change part, and the stator is fixedly arranged on the shell and corresponds to the rotor. The invention combines the structural characteristics of the pipeline and the propeller, fully utilizes the Venturi effect, breaks through the conventional design, reasonably distributes, well solves the contradiction between the high-power stator and rotor in the rim pump jet propeller and the limited installation space and the utilization problem of vortex energy in the pipeline, ensures the small volume of the rim pump jet propeller, and greatly improves the propulsion power and the propulsion efficiency. However, the blade and the ring rotor are of an integrated structure, the problem of blade replacement is not considered, the problems of maintenance and replacement of the propeller blade are greatly limited, the lubrication and heat dissipation functions of the bearing are not well considered, the bearing is easy to wear, and the service life of the bearing is short.

Disclosure of Invention

The invention aims to provide the rim pump spraying propeller with low noise, detachability and good lubricating heat dissipation performance, which solves the cavitation and noise problems of the traditional propeller, solves the problems of blade detachment and bearing lubrication and cooling in the prior art, and further prolongs the service lives of the blades and the bearings.

In order to achieve the above object, the present invention provides the following solutions:

The rim pump spray propeller with low noise, detachability and good lubricating heat dissipation performance is characterized by comprising a shell, wherein a stator sealing mechanism is arranged on the inner wall of the shell, a rotor assembly is arranged on the inner side of the stator sealing mechanism, paddles are arranged in the rotor assembly, heat dissipation end covers are arranged at two ends of the shell, two ends of the rotor assembly are respectively and rotatably connected with the corresponding heat dissipation end covers, the rotor assembly is rotatably connected with the heat dissipation end covers through bearings, and the heat dissipation end covers are used for dissipating heat of the bearings;

The rotor assembly comprises a propeller retainer, five blade mounting grooves are formed in the middle of the propeller retainer, each blade mounting groove is uniformly and equally arranged at intervals, three threaded holes are formed in two sides of each blade mounting groove, and the blade mounting grooves are connected with blades through the threaded holes.

Preferably, the boss that is used for fixing the bearing is provided with on the inner wall of heat dissipation end cover, be provided with the recess that is used for subtracting heavy on the outer wall of heat dissipation end cover, a plurality of drainage mouth has been seted up on the outer edge of heat dissipation end cover, every evenly equally spaced between the drainage mouth, the inboard of pipe main part has set up the drainage ring, the position of drainage ring with the position of drainage mouth corresponds.

Preferably, a first collar and a second collar are fixedly arranged on the propeller retainer, the first collar is matched with the retainer supporting ring, and the end part of the second collar is in contact with the bearing.

Preferably, a key slot is formed in the propeller retainer, the key slot is located between the two blade mounting grooves, and the propeller retainer and the permanent magnet are axially fixed through key connection.

Preferably, one end diameter of the propeller retainer is smaller than the other end, a bearing bush is additionally arranged between one end of the small diameter of the propeller retainer and the bearing, and the bearing bush is made of nylon.

Preferably, one end of the cage support ring is in contact with a plane corresponding to the bearing bush, and the other end is in contact with a plane corresponding to the permanent magnet.

Preferably, the stator sealing mechanism comprises a stator sealing shell inner cylinder, the end face of the stator sealing shell inner cylinder is in plane contact with the corresponding permanent magnet, the stator sealing shell inner cylinder is fixedly connected with a stator sealing shell outer cylinder, one end of the stator sealing shell outer cylinder is fixedly connected with a stator sealing shell end cover, a stator winding is arranged inside the stator sealing shell inner cylinder, one end of the stator winding is attached to the stator sealing shell inner cylinder, the other end of the stator winding is attached to the stator sealing shell outer cylinder, and two ends of the stator winding are in sealing arrangement with the stator sealing shell end cover.

Preferably, the bearing is a water-lubricated tapered roller bearing made of zirconia.

Compared with the prior art, the invention has the following advantages and technical effects:

The propeller retainer is designed to realize a propeller hub-free structure, so that the problem of noise generated by shafting vibration when blades rotate is avoided, the noise is reduced, the propeller hub-free structure is high in water opening efficiency and good in cavitation resistance, five blade mounting grooves are formed in the middle of the propeller retainer, three threaded holes are uniformly formed in two sides of each mounting groove and used for mounting the blades, convenience is provided for replacement of the blades, the blades can be detached from the retainer individually, the cost for replacing the blades is reduced, the heat dissipation end cover is used for dissipating heat of a bearing, seawater can be introduced into the running bearing to lubricate and cool the bearing, and the service life of the bearing is prolonged.

Drawings

For a clearer description of an embodiment of the invention or of the solutions of the prior art, the drawings that are needed in the embodiment will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art:

FIG. 1 is a schematic diagram of a low noise, detachable and lubricative heat dissipation rim pump jet propulsion apparatus of the present invention;

FIG. 2 is a top view of a low noise, removable, lubricated heat dissipation rim pump jet propulsion system of the present invention;

FIG. 3 is a schematic view of the structure of the propeller retainer of the present invention;

FIG. 4 is a schematic view of a heat dissipating end cap according to the present invention;

FIG. 5 is a side view of a heat dissipating end cap of the present invention;

Reference numeral 1, a shell; 2, a catheter main body, 3, a stator sealing mechanism, 301, a stator sealing shell inner cylinder, 302, a stator winding, 303, a stator sealing shell outer cylinder, 304, a stator sealing shell end cover, 4, a bearing, 5, a rotor assembly, 501, a propeller retainer, 502, a blade mounting groove, 503, a first collar, 504, a second collar, 505, a retainer support ring, 506, a key slot, 507, a permanent magnet, 6, a blade, 7, a heat dissipation end cover, 701, a boss, 702, a groove, 703, a drainage port, 8 and a bearing bush.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to the appended drawings and appended detailed description.

As shown in fig. 1-5, the rim pump spray propeller with low noise and good detachable and lubricating heat dissipation performance comprises a shell 1, a stator sealing mechanism 3 is installed on the inner wall of the shell 1, a rotor assembly 5 is arranged on the inner side of the stator sealing mechanism 3, paddles 6 are installed in the rotor assembly 5, heat dissipation end covers 7 are installed at two ends of the shell 1, the two ends of the rotor assembly 5 are respectively and rotatably connected with the corresponding heat dissipation end covers 7, the rotor assembly 5 and the heat dissipation end covers 7 are rotatably connected through bearings 4, the heat dissipation end covers 7 are used for dissipating heat of the bearings 4, except that seawater can be introduced into the running bearings 4 to lubricate and cool the bearings, so that the service life of the bearings 4 is prolonged, and the required pretightening force can be provided for the two bearings 4 besides the positioning and fixing support of the rotor assembly 5.

The rotor assembly 5 comprises a propeller retainer 501, five blade mounting grooves 502 are formed in the middle of the propeller retainer 501, each blade mounting groove 502 is uniformly and equally arranged at intervals, a blade 6 is mounted in each blade mounting groove 502, and a rotor hub-free design is achieved by fixing the blade 6 and the propeller retainer 501 together. Three threaded holes are formed in two sides of each blade mounting groove 502 for mounting the blade 6, and the blade 6 is convenient to replace due to the design, and when the blade 6 needs to be replaced, the blade 6 and the propeller retainer 501 can be detached in a mode of disassembling the mounting screws, so that the cost of replacing the blade 6 is reduced.

According to a further optimization scheme, a boss 701 for fixing the bearing 4 is arranged on the inner wall of the heat radiation end cover 7, a groove 702 for reducing weight is arranged on the outer wall of the heat radiation end cover 7, a plurality of drainage ports 703 are formed in the outer edge of the heat radiation end cover 7, the number of the drainage ports 703 is not particularly limited, the number of the drainage ports 703 is preferably 4, the interval between each drainage port 703 is uniform, seawater can be introduced into the running bearing 4 for lubrication and cooling of the bearing 4, and the service life of the bearing 4 is prolonged. The inside of the catheter main body 2 is provided with a drainage ring, the position of the drainage ring corresponds to the position of the drainage port 703, so that seawater can smoothly enter the inner duct without unnecessary resistance caused by the height difference between the heat radiation end cover 7 and the inner wall of the rotor assembly 5, and the propulsion efficiency of the rim pump jet propeller is improved.

In a further optimization scheme, a first collar 503 and a second collar 504 are fixedly arranged on the propeller retainer 501, the first collar 503 is matched with the retainer support ring 505, the first collar 503 and the retainer support ring 505 can jointly realize axial fixation of the rotor assembly 5, and thrust generated by the blades 6 can be transmitted along the axial direction. The end of the collar two 504 is in contact with the bearing 4, so that the generated thrust is transmitted from the propeller holder 501 to the bearing 4, and the thrust is transmitted to the housing 1 by the bearing 4, thereby providing thrust for the aircraft. Five reinforcing ribs are uniformly arranged on one side, far away from the first collar 503, of the second collar 504 along the circumferential direction, so that the bearing capacity of the second collar 504 can be improved.

Further optimizing scheme has offered keyway 506 on the screw holder 501, and keyway 506 is located between two paddle mounting groove 502, and screw holder 501 and permanent magnet 507 carry out axial fixity through the key connection, realize the axial fixity between screw holder 501 and the permanent magnet 507 through the key connection, guarantee can not take place relative slip between permanent magnet 507 and screw holder 501 in the power transmission process.

Further optimizing scheme, one end diameter of screw holder 501 is less than the other end, adds between screw holder 501 minor diameter's one end and bearing 4 and is equipped with bearing bush 8, and bearing bush 8 is nylon material. In order to ensure that the permanent magnet 507 can be smoothly mounted on the propeller retainer 501, one end of the propeller retainer 501 has a smaller diameter than the other end, and the smaller end cannot meet the matching requirement with the bearing 4, so that the problem is solved by adopting a mode of additionally mounting the nylon bearing bush 8.

Further preferably, one end of the cage support ring 505 is in contact with a corresponding flat surface of the bearing bush 8, which functions in operation as the collar two 504 above. The other end contacts with the corresponding plane of the permanent magnet 507, and the permanent magnet 507 is axially fixed together with the first collar 503 of the propeller retainer 501.

Further optimizing scheme, stator seal mechanism 3 includes stator seal shell inner tube 301, the terminal surface of stator seal shell inner tube 301 and the plane contact that permanent magnet 507 corresponds, stator seal shell inner tube 301 fixedly connected with stator seal shell urceolus 303, the one end fixedly connected with stator seal shell end cover 304 of stator seal shell urceolus 303, stator seal shell inner tube 301 inside is provided with stator winding 302, stator winding 302 circular telegram produces rotating magnetic field, be special magnetic coupling transmission mode between stator and the rotor, the magnetic field that produces drives permanent magnet 507 and rotates, and then drive the screw holder 501 with permanent magnet 507 rigid connection rotates. One end of the stator winding 302 is attached to the inner cylinder 301 of the stator sealing shell, the other end is attached to the outer cylinder 303 of the stator sealing shell, two ends of the stator winding 302 are in sealing arrangement with the end cover 304 of the stator sealing shell, a stator winding compacting rubber ring is fixedly arranged on one side of the stator winding 302, and a stator winding fixing ring is fixedly arranged on the other side of the stator winding 302 so as to fix the position of the stator winding 302 and prevent displacement.

The stator sealing shell inner cylinder 301 and the stator sealing shell outer cylinder 303 are fixedly connected by bolts, and the bolts are hexagon head bolts and spring washer assemblies, wherein the stator sealing shell outer cylinder 303 and the stator sealing shell end cover 304 are fixedly connected by bolts. A group of O-shaped sealing rings are arranged on the inner wall of the inner cylinder 301 of the stator sealing shell, another group of O-shaped sealing rings are arranged on the inner wall of the outer cylinder 303 of the stator sealing shell, and the two groups of O-shaped sealing rings are arranged diagonally, so that the sealing effect is enhanced.

According to the further optimization scheme, the bearing 4 is a water-lubricated tapered roller bearing made of zirconia, axial constraint is needed in the working process in consideration of the fact that the rotating part is affected by downward gravity when the propeller is stopped, the bearing is required to bear radial force and axial force at the same time, and meanwhile, the water-lubricated tapered roller bearing made of zirconia is designed from the aspects of environmental protection and design complexity.

The working process of the invention is as follows:

When the controller issues a forward command, the stator windings 302 are energized and generate a rotating magnetic field. The generated magnetic field drives the permanent magnet 507 to rotate, and the power of the permanent magnet 507 is transmitted to the propeller retainer 501 through the key, so that the blade 6 is driven to rotate along the axis. The thrust is generated by the interaction force of the blades 6 and the seawater, and is transmitted to the propeller retainer 501 through the blades 6, so that the thrust tends to advance along the thrust direction, and then the thrust is transmitted to the permanent magnet 507 through the first collar 503, then the thrust is transmitted to the retainer support ring 505 through the permanent magnet 507, and then the thrust is transmitted to the nylon bearing bush 8 and the front heat dissipation end cover 7, and then the power is transmitted to the engine body through the heat dissipation end cover 7 and the conduit shell 1. When the controller sends out a backward command, the propeller rotor reverses, and the thrust transmission process is similar to that of forward.

In the description of the present invention, it should be understood that the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present invention.

The above embodiments are only illustrative of the preferred embodiments of the present invention and are not intended to limit the scope of the present invention, and various modifications and improvements made by those skilled in the art to the technical solutions of the present invention should fall within the protection scope defined by the claims of the present invention without departing from the design spirit of the present invention.

Claims (5)

1. A low-noise, detachable, and lubricated heat dissipation rim pump-jet propulsion device, characterized in that: it includes a housing (1), a stator sealing mechanism (3) is installed on the inner wall of the housing (1), a rotor assembly (5) is provided on the inner side of the stator sealing mechanism (3), a blade (6) is installed inside the rotor assembly (5), heat dissipation end caps (7) are installed at both ends of the housing (1), the two ends of the rotor assembly (5) are respectively rotatably connected to the corresponding heat dissipation end caps (7), the rotor assembly (5) and the heat dissipation end caps (7) are rotatably connected by a bearing (4), and the heat dissipation end caps (7) are used to dissipate heat from the bearing (4); The rotor assembly (5) includes a propeller holder (501), and five blade mounting slots (502) are provided in the middle of the propeller holder (501). Each blade mounting slot (502) is evenly spaced, and three threaded holes are provided on both sides of each blade mounting slot (502). The blade (6) is connected to the blade mounting slot (502) through the threaded holes. The inner wall of the heat dissipation end cap (7) is provided with a boss (701) for fixing the bearing (4), the outer wall of the heat dissipation end cap (7) is provided with a groove (702) for weight reduction, and a plurality of drainage ports (703) are opened on the outer edge of the heat dissipation end cap (7), with each drainage port (703) evenly spaced. A drainage ring is provided on the inner side of the conduit body (2), and the position of the drainage ring corresponds to the position of the drainage port (703). The propeller cage (501) is fixedly provided with a first collar (503) and a second collar (504). The first collar (503) cooperates with the cage support ring (505), and the end of the second collar (504) contacts the bearing (4). The propeller holder (501) is provided with a keyway (506), which is located between the two blade mounting slots (502). The propeller holder (501) and the permanent magnet (507) are axially fixed by a key connection. The propeller cage (501) is fixedly provided with a first collar (503) and a second collar (504). The first collar (503) cooperates with the cage support ring (505). The first collar (503) and the cage support ring (505) together realize the axial fixation of the rotor assembly (5). The end of the second collar (504) contacts the bearing (4), which enables the generated thrust to be transmitted from the propeller cage (501) to the bearing (4), and then the bearing (4) transmits the thrust to the housing (1). Five reinforcing ribs are evenly arranged along the circumferential direction on the side of the second collar (504) away from the first collar (503). The reinforcing ribs are used to improve the load-bearing capacity of the second collar (504). 2. The rim pump-jet propeller with low noise, detachable and good lubrication and heat dissipation performance according to claim 1, characterized in that: the diameter of one end of the propeller retainer (501) is smaller than that of the other end, and a bearing bushing (8) is installed between the smaller diameter end of the propeller retainer (501) and the bearing (4), and the bearing bushing (8) is made of nylon. 3. A low-noise, detachable, and well-lubricated and heat-dissipating rim pump-jet propulsion device according to claim 2, characterized in that: one end of the retainer support ring (505) is in contact with the plane corresponding to the bearing bushing (8), and the other end is in contact with the plane corresponding to the permanent magnet (507). 4. A low-noise, detachable, and well-lubricated rim pump-jet propulsion device according to claim 3, characterized in that: the stator sealing mechanism (3) includes a stator sealing shell inner cylinder (301), the end face of the stator sealing shell inner cylinder (301) is in contact with the plane corresponding to the permanent magnet (507), the stator sealing shell inner cylinder (301) is fixedly connected to a stator sealing shell outer cylinder (303), one end of the stator sealing shell outer cylinder (303) is fixedly connected to a stator sealing shell end cap (304), a stator winding (302) is provided inside the stator sealing shell inner cylinder (301), one end of the stator winding (302) is attached to the stator sealing shell inner cylinder (301), the other end is attached to the stator sealing shell outer cylinder (303), and both ends of the stator winding (302) are sealed to the stator sealing shell end cap (304). 5. The rim pump-jet propulsion device with low noise, detachable design and good lubrication and heat dissipation performance according to claim 1, characterized in that: the bearing (4) is a water-lubricated tapered roller bearing made of zirconium oxide.