CN211252971U

CN211252971U - Underwater propeller

Info

Publication number: CN211252971U
Application number: CN201921250671.8U
Authority: CN
Inventors: 左名久; 胡珊
Original assignee: Wuhan Zhagu Marine Technology Co ltd
Current assignee: Wuhan Zhagu Marine Technology Co ltd
Priority date: 2019-08-02
Filing date: 2019-08-02
Publication date: 2020-08-14
Anticipated expiration: 2029-08-02

Abstract

The utility model discloses an underwater propeller belongs to underwater equipment technical field. The underwater propeller includes: a housing comprising a first shell, a second shell, and a conduit; a power system including a driver and a motor; the propulsion system comprises a magnetic coupling inner rotor, an isolation cover and a magnetic coupling outer rotor assembly; a large number of parts in the propulsion system are installed by using a nested structure and are in direct contact with water, and the shell only carries out sealing protection on the electric elements. The complexity of the machine shell is obviously reduced, and the difficulty of disassembling and assembling each part is reduced. The function requirement of being convenient for to disassemble and assemble is realized, and the maintenance and the overhaul of the underwater propeller are facilitated.

Description

Underwater propeller

Technical Field

The embodiment of the utility model provides a relate to underwater equipment technical field, a propeller under water specifically says so.

Background

The underwater propeller is a vital component of an underwater vehicle, at present, the main driving mode of the underwater propeller mostly adopts the direct connection of a motor output shaft and a propeller so as to realize the driving of the propeller, and because the working environment of the underwater propeller is severe, the propeller and the motor output shaft part can be immersed in water for a long time and suffer from the influence of factors such as chemical corrosion, complex stress and the like, the damage of the motor output shaft can easily cause the output shaft of the motor to be damaged, and the damage of the motor output shaft can cause the whole underwater propeller to be required to be disassembled and maintained, which is not beneficial to ensuring the service life of the.

SUMMERY OF THE UTILITY MODEL

The utility model aims to overcome above-mentioned technique not enough, provide an underwater propeller, solve the technical problem that the underwater propeller dismantles and overhauls loaded down with trivial details complicacy among the prior art.

In order to achieve the above technical purpose, the technical scheme of the utility model provides an underwater propeller, include:

the shell comprises a first shell, a second shell and a guide pipe, wherein a first cavity is formed in the first shell; the second shell is detachably fixed on the mounting seat extending out of the outer edge of the first shell, and a second cavity is formed in the second shell; the guide pipe is cylindrical and is detachably fixed on the outer edge of the first shell;

the propulsion system comprises a magnetic coupling inner rotor, an isolation cover, a magnetic coupling outer rotor assembly and a propeller, wherein the isolation cover is coaxially arranged in the guide pipe, and the opening end of the isolation cover is hermetically connected to the outer wall of the first shell; the magnetic coupling inner rotor is coaxially arranged in the isolation cover and is in clearance fit with the isolation cover; the magnetic coupling outer rotor assembly is coaxially sleeved on the isolation cover and is rotatably connected with the isolation cover, and the propeller is sleeved on the magnetic coupling outer rotor assembly;

the power system comprises a driver and a motor, the motor is arranged in the first cavity, and a rotating shaft of the motor penetrates through the inner wall of the first shell and is coaxially connected with the inner rotor of the magnetic coupling; the driver is installed in the second cavity and electrically connected with the motor.

Compared with the prior art, the utility model discloses an adopt the cooperation of magnetic coupling inner rotor, cage, magnetic coupling external rotor subassembly, make the output shaft of magnetic coupling inner rotor and motor place in sealed inside the cage, avoided its contact with water, also avoided it to receive complicated stress effect, it is through the magnetic coupling effect of magnetic coupling inner rotor and magnetic coupling external rotor subassembly in order to realize that the complicated stress that external rotor subassembly received then acts on the cage, and can not act on the output shaft of motor, it is favorable to prolonging the life of whole underwater propulsor; meanwhile, the first shell, the second shell and the guide pipe are detachably connected, so that the first shell, the second shell and the guide pipe are conveniently disassembled and assembled, and the propulsion system and the power system are convenient to overhaul and maintain.

Drawings

Fig. 1 is a schematic structural view of an underwater propeller provided by an embodiment of the present invention;

fig. 2 is a schematic structural view of a propulsion system of an underwater propeller provided by an embodiment of the present invention;

fig. 3 is a schematic structural view of an outer rotor of a magnetic coupling according to an embodiment of the present invention;

fig. 4 is a schematic top view of an underwater propulsion unit according to an embodiment of the present invention;

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

As shown in fig. 1 to 4, an underwater propeller according to an embodiment of the present invention includes:

the underwater propeller comprises a machine shell 100, a propulsion system 200 and a power system 300, wherein the propulsion system 200 and the power system 300 are arranged in the machine shell 100, and the power system 300 is used for generating power to drive the propeller system 200 to rotate, so that the thrust generated by the underwater propeller acting on water is realized.

The housing 100 includes a first housing 110, a second housing 120 and a guide tube 130, wherein the first housing has a first cavity 110a, and a fixing base 115 extends from the outer edge of the first housing 110 or the second housing 120; the fixed seat 115 is provided with three lugs 115a, and the three lugs 115a are respectively provided with a slotted hole 115b for installing and fixing the underwater propeller; obviously, the underwater vehicle should be provided with a corresponding fixing seat, for use in cooperation with the present invention.

A second cavity 120a is formed in the second housing 120, and the second housing 120 is detachably mounted on the outer edge of the first housing 110 to extend out of the mounting seat 111 and connected with the mounting seat through a screw; the guide tube 130 is cylindrical and detachably mounted on the outer edge of the first housing 110; in order to improve the flow guiding effect, the radial cross section of the inner wall of the guide tube 130 is circular arc, and the inner diameter is gradually increased from the middle to the two ends. The apertures at the two ends are large, so that water can be guided in and discharged, the middle is small, the flow velocity of water near the propeller 210 can be increased, a better flow guide effect is achieved, and the propulsion efficiency of the propeller 210 is improved.

A propulsion system comprising a magnetic coupling inner rotor 240, an isolation cover 230, a magnetic coupling outer rotor assembly 220, and a propeller 210. The shielding case 230 contains a containing cavity, the tail end of the shielding case extends backwards to form a mounting shaft for mounting the outer rotor 240 of the magnetic coupling, the outer edge of the opening is provided with an external thread, the internal threads of the mounting part of the first shell 110 are matched to realize mounting and fixing of the shielding case, and the port of the shielding case 230 is abutted with a sealing gasket to realize sealing of the containing cavity in the shielding case 230 and the first cavity 110 a. The magnetic coupling inner rotor 240 is connected to the motor 310 for rotation, and is driven by the motor to rotate, so as to drive the magnetic coupling outer rotor assembly 220 and the propeller 210 to rotate by means of magnetic coupling. The isolation cover 230 bears a large load, and is easily aged when being soaked in water, so that the isolation cover 230 is made of hastelloy in the embodiment, and the corrosion resistance and the structural strength of the isolation cover 230 are enhanced. Of course, other conventional means may be substituted by those skilled in the art to achieve the same effect. For example, the stress concentration portion is passivated, and the surface of the part is subjected to conventional means such as corrosion resistance treatment, and the utility model is not described in detail.

The power system 300 includes a motor 310 and a driver 320, the motor 310 is mounted in the first cavity 110a, and the motor shaft passes through the isolation cover 230 and is connected with the magnetic coupling inner rotor 240. In this embodiment, in order to obtain better performance effect, the motor 310 is a dc brushless motor, and has smaller vibration and higher output torque with the same volume. The driver 320 is mounted on the bracket in the second cavity 120a, and is connected to the motor 310 through a through hole formed between the first casing 110 and the second casing 120.

In the embodiment, the rotation of the motor 310 is controlled by the driver 320, so as to drive the magnetic coupling inner rotor 240 to rotate, the magnetic coupling inner rotor 240 drives the magnetic coupling outer rotor assembly 220 to rotate relative to the isolation cover 230 through the magnetic coupling effect of the magnetic coupling inner rotor 240 and the magnetic coupling outer rotor assembly 220, the propeller 210 rotates along with the magnetic coupling outer rotor assembly 220, so as to realize the underwater work of the underwater thruster, the cooperation of the magnetic coupling inner rotor 240, the isolation cover 230 and the magnetic coupling outer rotor assembly 220 is adopted, so that the magnetic coupling inner rotor 240 and the output shaft of the motor 310 are hermetically arranged in the isolation cover 230, the contact between the magnetic coupling inner rotor 240 and the magnetic coupling outer rotor assembly 220 is avoided, the complex stress action on the magnetic coupling outer rotor assembly 220 is also avoided, the rotation of the magnetic coupling outer rotor assembly 220 is realized through the magnetic coupling effect of the magnetic coupling inner rotor 240 and the magnetic coupling outer rotor assembly, without acting on the output shaft of the motor 310, which is advantageous for extending the service life of the entire underwater propeller.

In addition, in the present embodiment, the detachable connection manner is adopted between the first casing 110, the second casing 120 and the guide tube 130, which is beneficial to the dismounting and mounting of the first casing 110, the second casing 120 and the guide tube 130, so as to facilitate the overhaul and maintenance of the propulsion system 200 and the power system 300, specifically, after the guide tube 130 is dismounted from the first casing 110, a part of the structure of the propulsion system 200 can be directly exposed and exposed, which is convenient for overhaul and the dismounting and maintenance of the propulsion system 200, and the first casing 110 and the second casing 120 can facilitate the individual overhaul and maintenance of the components mounted therein, which is beneficial to the convenience of operation.

In a preferred embodiment, an assembly form of the magnetic coupling outer rotor assembly is provided on the basis of the scheme. The isolation cover 230 includes an isolation cover body and a rectifying terminal 231, and the rectifying terminal 231 is coaxially connected to the tail end of the isolation cover 230 by a screw thread. The screw-in length of the rectifying terminal 231 is adjusted by rotating the screw, thereby compressing and fixedly sleeving the magnetic coupling outer rotor assembly 220 on the cage 230.

In order to make the technical solution of the present invention better understood by those skilled in the art, the magnetic coupling outer rotor assembly 220 is explained in more detail by using the preferred embodiment, the magnetic coupling outer rotor assembly 220 includes a magnetic coupling outer rotor 221 and a fairing 222, the magnetic coupling outer rotor 221 is sleeved on the isolation cover 230, and is rotatably connected with the isolation cover 230; the center of the propeller 210 is embedded and fixed with the magnetic coupling outer rotor 221 and can rotate along with the magnetic coupling outer rotor 221; the fairing 222 is bowl-shaped, the opening end of the fairing is sleeved at the tail end of the isolation cover 230, the edge of the port is abutted against the hub of the propeller 210, and the fairing 222 and the outer side of the propeller 210 integrally form a smooth streamline shape, so that the flow resistance of water is reduced.

The magnetic coupling outer rotor assembly 220 further comprises at least one bearing 223, and the bearing 223 is fittingly nested between the magnetic coupling outer rotor 221 and the body of the cage 230 and/or between the fairing 222 and the fairing terminal 231.

To duct mount's preferred scheme, the utility model discloses an extend the splice bar from first casing 110 and be connected with the pipe port, the splice bar is two at least and evenly arranges along shell body circumference, and every splice bar all radially sets up and one end is connected in shell body outer wall, the other end is connected in pipe 130 one end terminal surface along the shell body, and the relative pipe 130 one end of one of them splice bar outwards extends and is connected with mount pad 111. In addition, regarding the assembly manner of the motor, the embodiment of the present invention adopts the first casing 110 with one end open and detachably connected to the end cap 112, and the other end recessed inwards to form a connection groove, and the end portion of the opening of the body of the isolation cover 230 is fittingly inserted into the connection groove and abuts against the sealing ring in the connection groove;

in a preferred embodiment, the fairing 222, the propeller 210 and the magnetic coupling outer rotor 221 are integrally formed. The fit clearance between each part is reduced or even eliminated, and then the contact area of the propulsion system and water is reduced, and the corrosion resistance is improved. Meanwhile, due to the integral forming, the assembling process is simplified, and the assembling and disassembling efficiency is further improved.

Preferably, the outlet of the motor 310 is located at the end of the rotating shaft, and it passes through a through hole formed on the connecting rib to be electrically connected with the driver 320. The outlet end and the rotating shaft end of the motor 310 are high-incidence points of faults, namely, key positions for maintenance are overhauled, the outlet end and the rotating shaft end are arranged in a centralized mode, and later-stage overhauling and maintenance are facilitated.

As an underwater propeller, if the metal casing 100 is immersed in water for a long time, the casing 100 is easily oxidized and corroded. A sacrificial anode 114 is thus arranged at the lower end of the first housing 110 as a corrosion protection for protecting the casing from corrosion.

The driver 320 is provided with a rotating speed feedback interface, the surface of the second housing 120 is additionally provided with the watertight connector 121, the driver 320 is electrically connected with the watertight connector 121, and a feedback channel of working information is provided, so that the working state of the motor 310 is judged, and whether equipment maintenance is normally required is judged.

In addition, the electric element generates heat during operation, the sealed casing is not favorable for heat dissipation, and the temperature inside the casing is easily overhigh, so that the second casing 120 is provided with the heat dissipation port 122, and the heat dissipation port 122 is sealed by a slotted large-circular-column-head screw matched with an O-shaped ring and used for guiding the heat out of the casing, thereby improving the working environment in the second casing 120 and being favorable for prolonging the service life of the electric element.

The above description of the present invention does not limit the scope of the present invention. Any other corresponding changes and modifications made according to the technical idea of the present invention should be included in the scope of the claims of the present invention.

Claims

1. An underwater propeller, characterized by comprising:

the propulsion system comprises a magnetic coupling inner rotor, an isolation cover and a magnetic coupling outer rotor assembly, wherein the isolation cover is coaxially arranged in the conduit, and the opening end of the isolation cover is hermetically connected to the outer wall of the first shell; the magnetic coupling inner rotor is coaxially arranged in the isolation cover and is in clearance fit with the isolation cover; the magnetic coupling outer rotor assembly is coaxially sleeved on the isolation cover and is rotatably connected with the isolation cover;

2. The underwater propeller of claim 1, wherein the isolation cover includes an isolation cover body and a fairing terminal, one end of the isolation cover body is open and is hermetically connected to the first shell, and the fairing terminal is arranged on one side of the isolation cover body, which is far away from the first shell, and one end of the fairing terminal is coaxially connected to the closed end of the isolation cover body.

3. The underwater propulsor of claim 2 wherein said magnetic coupling outer rotor assembly comprises a magnetic coupling outer rotor, a fairing, and a propeller;

the magnetic coupling outer rotor is coaxially sleeved on the isolation cover body and matched with a magnetic coupling inner rotor arranged in the isolation cover body, the propeller is coaxially sleeved on the magnetic coupling outer rotor, the rectifying cover part is coaxially sleeved on the rectifying terminal, and the other part of the rectifying cover part is sleeved on the magnetic coupling outer rotor and connected with the propeller; the magnetic coupling outer rotor is rotatably connected with the isolation cover body and/or the fairing is rotatably connected with the fairing terminal.

4. The underwater propulsor of claim 3 wherein said magnetic coupling outer rotor assembly further comprises at least one bearing matingly nested between said magnetic coupling outer rotor and said cage body and/or between said fairing and said fairing terminal.

5. The underwater propulsion unit of claim 3, wherein the fairing, the propeller, and the magnetic coupling outer rotor are integrally formed.

6. The underwater propeller of claim 1, wherein the first shell comprises a shell body, an end cover and a connecting rib, one end of the shell body is open and is detachably connected with the end cover, the other end of the shell body is recessed inwards to form a connecting groove, and the open end part of the isolation cover body is fittingly inserted into the connecting groove and abuts against a sealing ring in the connecting groove; the splice bar is two at least and follows shell body circumference is evenly arranged, every the splice bar all follows the shell body radially sets up and one end connect in shell body outer wall, the other end connect in pipe one end terminal surface, and one of them the relative pipe one end of splice bar outwards extend and with the mount pad is connected.

7. The underwater propeller as recited in claim 6, wherein the outlet of the motor is located at the end of the rotating shaft, and the outlet of the motor passes through a through hole formed in the connecting rib to be electrically connected with the driver.

8. An underwater propulsion device as in claim 1 wherein the first hull surface has corrosion resistant members.

9. An underwater propulsion device as claimed in claim 1 wherein the drive has a rotational speed feedback interface, the second housing surface is fitted with a watertight connector, and the drive is electrically connected to the watertight connector.

10. The underwater propulsion unit of claim 1, wherein the second housing has a heat sink that is sealed by a screw fitting O-ring.