CN114633861A

CN114633861A - Rim underwater propeller

Info

Publication number: CN114633861A
Application number: CN202011476046.2A
Authority: CN
Inventors: 王超; 刘铁法; 胡志强; 谷浪; 王兴; 孙威; 李豫
Original assignee: Shenyang Institute of Automation of CAS
Current assignee: Shenyang Institute of Automation of CAS
Priority date: 2020-12-15
Filing date: 2020-12-15
Publication date: 2022-06-17
Anticipated expiration: 2040-12-15
Also published as: CN114633861B

Abstract

The invention relates to an underwater propeller, in particular to a rim underwater propeller, which comprises a front guide vane, a front air guide sleeve, a machine shell, a rear air guide sleeve, a stator winding, rotor magnetic steel, a rotor sleeve and a propeller, wherein the front guide vane and the rear air guide sleeve are respectively connected to the front end and the rear end of the machine shell, and the front air guide sleeve is arranged on the outer side of the front guide vane; the stator winding is arranged on the inner wall of the shell; the propeller is accommodated in the inner side of the casing and rotatably mounted on the front guide vane, the rotor sleeve is sleeved on the propeller, and the rotor magnetic steel is arranged on the outer side of the rotor sleeve and corresponds to the stator winding. The invention adopts the structural form of a rim motor, the motor rotor directly drives the propeller to rotate and generate thrust, the transmission chain is short, the structure is compact, the motor stator part adopts the encapsulation process, the cabin penetrating part is used for leading the outlet wire of the stator winding into the dry cabin of the hollow part of the guide vane, and the bearing adopts a full ceramic rolling bearing, so that the propeller can be ensured to efficiently work in the underwater environment for a long time.

Description

Rim underwater propeller

Technical Field

The invention relates to an underwater propeller, in particular to a rim underwater propeller.

Background

The underwater propeller is an important part with navigation capability, such as an underwater robot, and can meet the thrust requirements of the underwater robot at different navigation speeds.

However, as the underwater robot is applied more and more widely, the requirements on the propulsion efficiency, the compactness and the like of the propeller are more and more obvious. For torpedo-shaped underwater robots, the propeller is often installed at the tail part, the tail part is in a flow collecting shape, the internal space is very limited, the tail part is also required to be provided with parts such as a steering engine, and the overall arrangement of various groups of parts at the tail part of the underwater robot can be greatly facilitated if the propeller does not occupy the space. In addition, the torpedo-shaped underwater robot takes long-term cruising as a main task, and the efficient propeller is beneficial to saving the energy consumption of the underwater robot and prolonging the voyage of the underwater robot.

Therefore, it is desirable to design a propeller that is compact, efficient, and capable of operating in a submerged environment for extended periods of time.

Disclosure of Invention

In view of the above problems, an object of the present invention is to provide a rim underwater propeller which has a compact structure and high efficiency, and can work in an underwater environment for a long time, thereby satisfying the installation requirements of a torpedo-shaped underwater robot.

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

a rim underwater propeller comprises a front guide vane, a front flow guide sleeve, a machine shell, a rear flow guide sleeve, a stator winding, rotor magnetic steel, a rotor sleeve and a propeller, wherein the front guide vane and the rear flow guide sleeve are respectively connected to the front end and the rear end of the machine shell, and the front flow guide sleeve is arranged on the outer side of the front guide vane; the stator winding is arranged on the inner wall of the shell; the propeller is accommodated in the inner side of the casing and rotatably mounted on the front guide vane, the rotor sleeve is sleeved on the propeller, and the rotor magnetic steel is arranged on the outer side of the rotor sleeve and corresponds to the stator winding.

The front guide vane is provided with a plurality of guide vanes, through holes are arranged in three guide vanes along the radial direction, and cable connecting components are arranged outside the through holes; the tail end of the front guide vane is provided with an extended shaft, and the tail end of the shaft is provided with a threaded hole.

The cable connecting assembly comprises a cabin penetrating piece shell, a cabin penetrating piece insulator and a cabin penetrating piece inner core, wherein the cabin penetrating piece shell is arranged at the end part of the through hole and is in sealing connection with the guide vane; the cabin penetrating piece is characterized in that a cabin penetrating piece insulator is arranged in the cabin penetrating piece shell, a cabin penetrating piece inner core is arranged in the cabin penetrating piece insulator, welding cups are arranged at two ends of the cabin penetrating piece inner core, and the welding cups are used for welding single-core cables.

The front end face of the front guide vane is provided with a plurality of plug-in components, each plug-in component comprises a watertight socket and a watertight plug, and the watertight socket is arranged on the front guide vane and is used for being connected with the stator winding; the watertight plug is plugged with the watertight socket.

The watertight socket comprises a socket shell, a socket inner core and a socket insulator, wherein the socket shell is connected with the front guide vane, the socket insulator is arranged in the socket shell, the socket inner core is arranged in the socket insulator, and the socket inner core is used for welding the outgoing line of the stator winding.

The watertight plug comprises a plug outer shell, a plug insulator and a plug inner core, wherein the plug insulator is arranged in the plug outer shell, and the plug inner core is arranged in the plug insulator; the plug outer shell is inserted with the socket outer shell and is locked by a locking nut and a plug elastic retainer ring; the plug inner core is in close contact with the socket inner core and forms a passage.

After the machine shell, the stator winding, the socket shell, the socket insulation and the socket inner core are installed and welded with the outgoing line, the stator winding, the socket shell and the machine shell are encapsulated into a whole by epoxy resin.

The propeller is installed on the tail end extending shaft of the front guide vane through a bearing and is axially positioned through a pressing sleeve.

The rear end of the propeller is provided with a tail guide cone

After the front guide vane, the front air guide sleeve, the machine shell and the rear air guide sleeve are installed, the outer contour of the front guide vane, the front air guide sleeve, the machine shell and the rear air guide sleeve is of an integrated streamline structure.

The invention has the following advantages and beneficial effects:

1. the motor rotor of the invention is directly sleeved on the propeller, the transmission chain is shortest, and the transmission efficiency is high.

2. The end part of the front guide vane is provided with a flange mounting hole, the guide vane can be directly mounted at the tail part of a torpedo-shaped underwater robot, and the guide vane is driven by a rim motor, so that the space of the tail part of the underwater robot is not occupied, and the spatial arrangement of the tail part components of the underwater robot is facilitated.

3. The motor stator winding adopts an integral encapsulation process, and the leading-out wire of the stator winding passes through the watertight connector and the cabin penetrating piece and enters the dry cabin in the middle of the front guide vane through the middle hole of the front guide vane blade, so that the propeller can work underwater for a long time and the heat dissipation performance of the propulsion motor is improved.

4. The invention adopts the all-ceramic rolling bearing, has good corrosion resistance, and uses the fiber gasket to pass through the impurities in the water outside the bearing, thereby greatly reducing the loss of the bearing and further improving the efficiency of the propeller.

5. The front guide vane, the front flow guide sleeve, the shell and the rear flow guide sleeve are integrally designed in a streamline manner, so that the self resistance of the propeller is greatly reduced, and the propelling efficiency is improved.

Drawings

FIG. 1 is an axial side view of a rimmed underwater propulsor of the present invention;

FIG. 2 is a cross-sectional view of the rimmed underwater propulsor of the present invention;

FIG. 3 is a partial cross-sectional view of a bearing portion of the present invention;

FIG. 4 is a side view of the present invention with the front fairing removed;

FIG. 5 is a partial cross-sectional view of a receptacle housing portion in accordance with the present invention;

fig. 6 is a partial cross-sectional view of a penetration housing portion in accordance with the present invention.

Wherein: the novel guide vane structure comprises a front guide vane 1, a front flow guide cover 2, a machine shell 3, a rear flow guide cover 4, a stator winding 5, rotor magnetic steel 6, a rotor sleeve 7, a propeller 8, a tail flow guide cone 9, a bearing elastic retainer ring 10, a fiber gasket 11, a bearing 12, an inner retainer ring 13, a pressing sleeve 14, a compression screw 15, a socket shell 16, a plug shell 17, a plug insulator 18, a plug inner core 19, a socket inner core 20, a socket insulator 21, a locking nut 22, a plug elastic retainer ring 23, a cabin penetrating piece shell 24, a cabin penetrating piece insulator 25 and a cabin penetrating piece inner core 26.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-2, the rim underwater propeller provided by the present invention comprises a front guide vane 1, a front air guide sleeve 2, a casing 3, a rear air guide sleeve 4, a stator winding 5, a rotor magnetic steel 6, a rotor sleeve 7 and a propeller 8, wherein the front guide vane 1 and the rear air guide sleeve 4 are respectively connected to the front end and the rear end of the casing 3, and the front air guide sleeve 2 is arranged outside the front guide vane 1; the stator winding 5 is arranged on the inner wall of the shell 3 in an interference fit manner; the propeller 8 is accommodated in the inner side of the casing 3 and rotatably mounted on the front guide vane 1, the rotor sleeve 7 is sleeved on the propeller 8, and the rotor magnetic steel 6 is arranged on the outer side of the rotor sleeve 7 and corresponds to the stator winding 5.

In the embodiment of the invention, a plurality of guide vanes are arranged on a front guide vane 1, through holes are arranged in three guide vanes along the radial direction, and cable connecting components are arranged on the outer sides of the through holes; the tail end of the front guide vane 1 is provided with an extended shaft, and the tail end of the shaft is provided with a threaded hole.

In the embodiment of the invention, as shown in fig. 3, the propeller 8 is mounted on the end extension shaft of the front guide vane 1 by means of two bearings 12 and is axially positioned by means of a clamping sleeve 14. Further, the rear end of the propeller 8 is provided with a tail guide cone 9.

Specifically, the bearings 12 are all ceramic rolling bearings, the bearing types are angular contact type, the two bearings are installed back to back, inner check rings 13, fiber gaskets 11 and bearing elastic check rings 10 are sequentially installed on the outer sides of the two bearings 12, the inner check rings 13 and the fiber gaskets 11 are installed on the propeller 8 and then integrally installed on an extension shaft on the front guide vane 1, a compression sleeve 14 is installed at the tail end of the front guide vane 1 and fixed by compression screws 15 to realize compression of the bearings 7, and the tail guide cone 9 is installed on the propeller 8 and rotates along with the propeller 8.

Furthermore, the front end of the front guide vane 1 is provided with a flange threaded hole which can be directly installed at the tail of a torpedo-shaped underwater robot, the hollow part of the front guide vane 1 can be used as one part of a pressure-resistant cabin of the underwater robot, the front guide vane 1 is provided with a plurality of guide vanes, three large guide vanes are provided with through holes, the through holes can be transmitted into a single-core cable meeting the power requirement of a motor, the tail end of the front guide vane 1 is provided with an extended shaft for installing a bearing 12 and a pressing sleeve 14, and the tail end of the shaft is provided with a threaded hole for installing a pressing screw 15. After the front guide vane 1, the front air guide sleeve 2, the machine shell 3 and the rear air guide sleeve 4 are installed, the outer contour is in an integrated streamline design.

As shown in fig. 6, in the embodiment of the present invention, the cable connection assembly includes a cabin penetrating member outer shell 24, a cabin penetrating member insulation 25 and a cabin penetrating member inner core 26, wherein the cabin penetrating member outer shell 24 is disposed at an end of the through hole and is in sealed connection with the guide vane; a cabin penetrating piece insulation 25 is arranged in the cabin penetrating piece shell 24, a cabin penetrating piece inner core 26 is arranged in the cabin penetrating piece insulation 25, and welding cups are arranged at two ends of the cabin penetrating piece inner core 26 and used for welding single-core cables.

Specifically, a sealing ring groove is formed in each cabin penetrating piece shell 24, a sealing ring can be installed to achieve sealing of a blade through hole of the front guide vane 1, cabin penetrating piece insulation 25 is made of engineering plastics, welding cups are arranged at two ends of a cabin penetrating piece inner core 26, the welding cups at two sides are brass pieces which are not communicated, and single-core cables can be welded at two ends of the cabin penetrating piece inner core 26.

As shown in fig. 4, on the basis of the above embodiment, the front end face of the front guide vane 1 is provided with a plurality of plug-in assemblies, each plug-in assembly comprises a watertight socket and a watertight plug, and the watertight socket is arranged on the front guide vane 1 and is used for being connected with the stator winding 5; the watertight plug is plugged with the watertight socket.

As shown in fig. 5, in the embodiment of the present invention, the watertight socket includes a socket outer shell 16, a socket inner core 20, and a socket insulation 21, wherein the socket outer shell 16 is connected to the front vane 1, the socket insulation 21 is disposed in the socket outer shell 16, the socket inner core 20 is disposed in the socket insulation 21, and the socket inner core 20 is used for welding the outgoing line of the stator winding 5. The watertight plug comprises a plug outer shell 17, a plug insulation 18 and a plug inner core 19, wherein the plug insulation 18 is arranged in the plug outer shell 17, and the plug inner core 19 is arranged in the plug insulation 18; the plug shell 17 is inserted into the socket shell 16 and locked by a locking nut 22 and a plug elastic retainer ring 23; the plug core 19 is in close contact with the receptacle core 20 and forms a passage.

In the embodiment of the invention, after the front fairing 2 is removed, three socket shells 16 are arranged on the machine shell 3, a socket insulation 21 is arranged in each socket shell 16, the socket insulation 21 is made of engineering plastics, a socket inner core 20 is arranged in each socket insulation 21, each socket inner core 20 is a brass piece, a welding cup is arranged at one time close to the stator winding 5, three-phase lead-out wires of the stator winding 5 are welded, and the socket shells 16, the socket insulation 21 and the socket inner cores 20 jointly form a watertight socket whole.

Furthermore, the plug insulation 18 is made of engineering plastics, the plug inner core 19 is made of brass, the lock nut 22 is in threaded connection with the socket outer shell 16, the plug inner core 19 is in close contact with the socket inner core 20 after connection to form a passage, a single-core watertight cable can be welded on the plug inner core 19, a sealing ring groove is formed in the connection part of the plug outer shell 17 and the socket outer shell 16, and a sealing ring can be installed to guarantee the water tightness of the connection position of the plug inner core 19 and the socket inner core 20.

In the embodiment of the invention, after the machine shell 3, the stator winding 5, the socket shell 16, the socket insulation 21 and the socket inner core 20 are installed and the stator winding is subjected to wire outgoing welding, the stator winding 5, the socket shell 16 and the machine shell 3 are encapsulated into a whole by adopting an epoxy resin integral encapsulation process. After encapsulation, no bubble is in the rotor, and the uniformity of air gaps between the rotor and the rotor magnetic steel is ensured. And a watertight cable is welded between each cabin penetrating member inner core 6 and the plug inner core 19, the connecting positions of the watertight cable, the cabin penetrating member inner core 6 and the plug inner core 19 after the welding members adopt a vulcanization process, and vulcanized rubber is used for ensuring the water tightness of the connecting positions.

The rim propeller provided by the invention adopts the motor with the front guide vane and the rim structure, the motor rotor is directly sleeved on the propeller to realize the driving of the propeller, the transmission efficiency is high, the front end of the guide vane is provided with the flange mounting hole and can be directly mounted on a dry cabin at the tail part of the underwater robot, the leading-out wire of the motor stator enters the dry cabin in the guide vane through the watertight connector, the cabin penetrating piece and the guide vane middle hole, the propeller does not occupy the tail part space of the underwater robot, the structure is more compact, and the installation of the propeller at the tail part of the underwater robot is convenient. The motor stator part adopts the mode of resin embedment, plays the protection and the radiating action of stator winding, adopts full ceramic antifriction bearing to support the screw, makes the propeller work in the environment under water for a long time. The front guide vane, the front flow guide sleeve, the casing and the rear flow guide sleeve are integrally streamlined, so that the self resistance of the propeller is effectively reduced, and the propulsion efficiency is improved.

The invention can be directly installed at the tail part of the torpedo-shaped underwater robot in the using process, does not occupy other spaces of the underwater robot, and has compact structure and convenient arrangement. The integral encapsulation process, the bearing material and the mounting structure adopted by the motor stator part can ensure that the underwater motor stator part can work in an underwater environment for a long time and efficiently.

The above description is only an embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, extension, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. The wheel rim underwater propeller is characterized by comprising a front guide vane (1), a front guide vane (2), an enclosure (3), a rear guide vane (4), a stator winding (5), rotor magnetic steel (6), a rotor sleeve (7) and a propeller (8), wherein the front guide vane (1) and the rear guide vane (4) are respectively connected to the front end and the rear end of the enclosure (3), and the front guide vane (2) is arranged on the outer side of the front guide vane (1); the stator winding (5) is arranged on the inner wall of the shell (3); the propeller (8) is accommodated in the inner side of the casing (3) and rotatably mounted on the front guide vane (1), the rotor sleeve (7) is sleeved on the propeller (8), and the rotor magnetic steel (6) is arranged on the outer side of the rotor sleeve (7) and corresponds to the stator winding (5).

2. Rim underwater propulsor according to claim 1, wherein the front guide vane (1) is provided with a plurality of guide vanes, three guide vanes are provided with through holes along the radial direction, and the outer side of the through holes is provided with a cable connecting component; the tail end of the front guide vane (1) is provided with an extended shaft, and the tail end of the shaft is provided with a threaded hole.

3. Rim underwater thruster according to claim 2, characterized in that the cable connection assembly comprises a bulkhead outer shell (24), a bulkhead insulation (25) and a bulkhead inner core (26), wherein the bulkhead outer shell (24) is arranged at the end of the through hole and is sealingly connected with the guide vanes; a cabin penetrating piece insulation (25) is arranged in the cabin penetrating piece shell (24), a cabin penetrating piece inner core (26) is arranged in the cabin penetrating piece insulation (25), welding cups are arranged at two ends of the cabin penetrating piece inner core (26), and the welding cups are used for welding single-core cables.

4. Rim underwater thruster according to claim 3, characterized in that the front end face of the front guide vane (1) is provided with a plurality of plug-in assemblies comprising a watertight socket and a watertight plug, the watertight socket being provided on the front guide vane (1) for connection with the stator winding (5); the watertight plug is plugged with the watertight socket.

5. Rim underwater thruster according to claim 4, characterized in that the watertight socket comprises a socket housing (16), a socket core (20) and a socket insulation (21), wherein the socket housing (16) is connected with the front guide vane (1), the socket insulation (21) is arranged in the socket housing (16), the socket core (20) is arranged in the socket insulation (21), and the socket core (20) is used for welding the outgoing wires of the stator winding (5).

6. Rim underwater thruster according to claim 5, characterized in that the watertight plug comprises a plug outer shell (17), a plug insulation (18) and a plug inner core (19), wherein the plug outer shell (17) is provided with the plug insulation (18) and the plug insulation (18) is provided with the plug inner core (19); the plug outer shell (17) is plugged with the socket outer shell (16) and is locked by a locking nut (22) and a plug elastic retainer ring (23); the plug core (19) is in close contact with the socket core (20) and forms a passage.

7. Rim underwater propulsor according to claim 5, characterized in that after the installation and the outgoing line welding of the machine shell (3), the stator winding (5), the socket shell (16), the socket insulation (21) and the socket core (20) are completed, the stator winding (5), the socket shell (16) and the machine shell (3) are encapsulated into a whole by epoxy resin.

8. Rimmed underwater thruster according to claim 2, characterized in that the propeller (8) is mounted on the terminal extension shaft of the front guide vane (1) by means of bearings (12) and is axially positioned by means of a compression sleeve (14).

9. Rim underwater thruster according to claim 1, characterized in that the rear end of the propeller (8) is provided with a tail deflector cone (9)

10. Rim underwater thruster according to claim 1, characterized in that the profile of the front guide vane (1), the front fairing (2), the housing (3) and the rear fairing (4) is an integrated streamline structure after installation.