Novel low-noise energy-saving underwater vehicle propeller

Abstract

The utility model relates to the technical field of underwater unmanned vehicles, in particular to a novel low-noise energy-saving underwater vehicle propeller, which comprises a propeller body, a plurality of groups of helical blades, a plurality of pressure relief holes and a fixing device, the helical blades are uniformly arranged in an inner cavity of the propeller body, the pressure relief holes are arranged on the helical blades, and the fixing device is arranged in the inner cavity of the propeller body. The screw blade adopts a shaftless pump jet propulsion system, the shaftless pump jet propulsion system eliminates a shaft system and a transmission device in a traditional propulsion system, energy loss is reduced, meanwhile, the stability and reliability of the system are improved, and the design of the pressure relief holes can effectively reduce tip vortex cavitation of a propeller, so that underwater radiation noise is reduced, and the service life of the system is prolonged. And the sliding block is driven to move in the sliding groove under the acting force of the spring, so that the positioning block enters the positioning groove to lock the screw rod, the connecting stability of the screw rod is guaranteed, and the situation that the screw rod is loosened due to long-term impact is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of underwater unmanned vehicles, in particular to a novel low-noise and energy-saving underwater vehicle propeller. Background Art

[0002] As we all know, as a force multiplier at sea, underwater unmanned vehicles (UUVs) have extensive and important military uses and will play an irreplaceable role in future naval battles. With the development of underwater unmanned vehicles and related technologies, underwater unmanned vehicles have been used to perform tasks such as minesweeping, reconnaissance, intelligence gathering and ocean detection. In future naval battles, they may also be used as underwater weapon platforms, logistics support platforms and other equipment, so they are of great significance.

[0003] With the deepening of ocean exploration and the increasing demand for underwater operations, underwater vehicles are being used more and more widely. However, traditional underwater vehicle propellers produce a lot of noise during operation, and also have high energy consumption. They also need to withstand a large impact during operation after installation, so their installation stability needs to be ensured. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] In view of the deficiencies of the prior art, the utility model provides a novel low-noise and energy-saving propeller for underwater vehicles.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a novel low-noise energy-saving underwater vehicle propeller, comprising a propeller body, a spiral blade, a pressure relief hole and a fixing device, wherein the inner cavity of the propeller body is evenly arranged with a plurality of groups of the spiral blades, and the spiral blades are arranged with a plurality of pressure relief holes, and the spiral blades adopt a shaftless pump-jet propulsion system, and the fixing device comprises a connecting rod, a fixing seat, a first connecting plate, a second connecting plate, a screw, a movable groove, a positioning block, a positioning groove, a slider, a slide groove and a spring, one end of the connecting rod is installed with the first connecting plate, and the left and right ends of the propeller body are both installed with the second connecting plate. The locking plate has two cams, one of which is a hole in the middle of the second connecting plate and a hole in the middle of the second connecting plate. The locking plate has two cams, one of which is a hole in the middle of the second connecting plate and a hole in the middle of the second connecting plate. The locking plate has two cams, one of which is a hole in the middle of the second connecting plate and a hole in the middle of the second connecting plate.

[0008] In order to facilitate the guidance of the slider, the utility model is improved in that a fixing rod is fixedly installed in the sliding groove, and the fixing rod passes through the spring and is slidably connected to the slider.

[0009] In order to reduce the resistance, the utility model is improved in that the outer wall of the connecting rod is designed with rounded corners.

[0010] Preferably, the utility model is improved in that the spiral blades are designed to have five groups.

[0011] In order to facilitate driving the positioning block, the utility model is improved in that a pull plate is installed at one end of the positioning block away from the positioning groove.

[0012] In order to facilitate the limiting of the pull plate, the utility model is improved in that the side wall of the fixing seat is provided with a groove, and the groove is adapted to the pull plate.

[0013] Preferably, the utility model is improved in that the spiral blade adopts a special curved shape.

[0014] In order to facilitate the screw rod to push the positioning block to move, the utility model is improved in that one end of the positioning block close to the positioning groove is designed as a slope.

[0015] (III) Beneficial effects

[0016] Compared with the prior art, the utility model provides a new type of low-noise and energy-saving underwater vehicle propeller, which has the following beneficial effects:

[0017] This new type of low-noise and energy-saving underwater vehicle propeller adopts an advanced shaftless pump-jet propulsion system to improve the propulsion efficiency of the spiral blades. The shaftless pump-jet propulsion system eliminates the shaft system and transmission device in the traditional propulsion system, reduces energy loss, and improves the stability and reliability of the system. Pressure relief holes are arranged on the spiral blades. The design of these pressure relief holes can effectively reduce propeller tip vortex cavitation, thereby reducing underwater radiated noise. The number and position of the pressure relief holes have been strictly calculated and experimentally verified to ensure that the propeller's propulsion performance is not affected while reducing noise.

[0018] This new type of low-noise and energy-saving underwater vehicle propeller can achieve precise positioning and fixation of the propeller body through the setting of the fixing device. The positioning block is movably installed in the movable groove. When the screw is screwed in, the positioning block is adapted to the positioning groove on the side wall of the screw to prevent the screw from rotating further. The positioning block is buffered and protected by the elastic force of the spring. This design can reduce the risk of component damage caused by vibration or impact, and also helps to improve the durability and reliability of the entire propeller body. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0020] Figure 2 It is a schematic diagram of a half-cut three-dimensional structure of the first connecting plate, the second connecting plate and the fixing seat of the utility model;

[0021] Figure 3 For the utility model Figure 2 A schematic diagram of the structure at the local A of the enlarged part;

[0022] Figure 4 It is a schematic diagram of the three-dimensional structure of the separated parts of the utility model.

[0023] In the figure: 1. propeller body; 2. spiral blade; 3. pressure reducing hole; 4. connecting rod; 5. fixing seat; 6. first connecting plate; 7. second connecting plate; 8. screw rod; 9. movable groove; 10. positioning block; 11. positioning groove; 12. slider; 13. slide groove; 14. spring; 15. threaded hole; 16. threaded groove; 17. fixing rod; 18. pull plate; 19. groove. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] See also Figure 1-4 A novel low-noise and energy-saving underwater vehicle propeller comprises a propeller body 1, a spiral blade 2, a pressure relief hole 3 and a fixing device, wherein the inner cavity of the propeller body 1 is evenly arranged with a plurality of groups of the spiral blades 2, and the spiral blades 2 are provided with a plurality of pressure relief holes 3, and the spiral blades 2 adopt a shaftless pump-jet propulsion system, and the fixing device comprises a connecting rod 4, a fixing seat 5, a first connecting plate 6, a second connecting plate 7, a screw 8, a movable groove 9, a positioning block 10, a positioning groove 11, a slider 12, a slide groove 13 and a spring 14, and the first connecting plate 6 is installed at one end of the connecting rod 4, and the second connecting plate 7 is installed at both left and right ends of the propeller body 1, and the first connecting plate 6 and the second connecting plate 7 are installed at both left and right ends of the propeller body 1, and the first connecting plate 6 and the second connecting plate 7 are installed at both ends of the propeller body 1. The second connecting plate 7 is provided with a threaded hole 15, the bottom end of the second connecting plate 7 is installed with the fixing seat 5, the fixing seat 5 is provided with a threaded groove 16 penetrating the threaded hole 15, the fixing seat 5 is provided with the movable groove 9 penetrating the threaded groove 16, the movable groove 9 is provided with the positioning block 10 movably installed, the side wall of the screw 8 is provided with a positioning groove 11, the positioning groove 11 is adapted to the positioning block 10, the upper and lower ends of the movable groove 9 are provided with the sliding groove 13, the slider 12 is slidably installed in the sliding groove 13, the spring 14 supporting the slider 12 is installed in the sliding groove 13, and the two groups of the sliders 12 are respectively connected with the positioning blocks 10 The upper and lower side walls are fixedly connected. In this embodiment, when in use, an advanced shaftless pump-jet propulsion system is adopted to improve the propulsion efficiency of the spiral blade 2. The shaftless pump-jet propulsion system eliminates the shaft system and transmission device in the traditional propulsion system, reduces energy loss, and improves the stability and reliability of the system. Pressure relief holes 3 are arranged on the propeller blades. The design of these pressure relief holes 3 can effectively reduce the propeller tip vortex cavitation, thereby reducing the underwater radiation noise. The number and position of the pressure relief holes 3 have been strictly calculated and experimentally verified to ensure that the propulsion performance of the propeller is not affected while reducing noise. The connecting rod 4 is connected to the underwater vehicle. When installing the propeller body 1 and the vehicle, first, the The first connecting plate 6 is aligned with the second connecting plate on the side wall of the thruster body 1, so that the threaded holes 15 on the first connecting plate 6 and the second connecting plate 7 are tightly matched, and then the positioning block 10 is pulled manually or by a tool to be stored in the movable groove 9, and the spring 14 is compressed accordingly, and then the screw 8 is rotated, and the screw 8 passes through the two groups of threaded holes 15 in turn, and then enters the threaded groove 16 at the top of the fixed seat 5. When the positioning block 10 is aligned with the positioning groove 11, the positioning block 10 is then released, and the slider 12 is driven to move in the slide groove 13 under the action of the spring 14, so that the positioning block 10 enters the positioning groove 11, and the screw 8 is locked to ensure the stability of the connection of the screw 8 and avoid loosening caused by long-term impact.

[0026] In actual use, it is further convenient to guide the slider 12. In this embodiment, a fixing rod 17 is fixedly installed in the slide groove 13. The fixing rod 17 passes through the spring 14 and is slidably connected to the slider 12. When the slider 12 slides in the slide groove 13, it also slides on the fixing rod 17 to guide the movement of the slider 12 and prevent the slider 12 from deviating from the motion trajectory.

[0027] In actual use, in order to further reduce resistance, in this embodiment, the outer wall of the connecting rod 4 is designed with rounded corners. The rounded corner design can optimize the fluid dynamic characteristics of the surface of the connecting rod 4 and reduce the eddy currents and turbulence generated when the water flow contacts the connecting rod 4. This helps to reduce the resistance of the water flow to the connecting rod 4 and improve the propulsion efficiency of the underwater vehicle.

[0028] Preferably, in this embodiment, the spiral blades 2 are designed to be five groups. Due to the five groups of spiral blades 2, it can provide a more uniform thrust distribution, so that the operation of the aircraft is smoother, which helps to reduce vibration and noise and improve the comfort and stealth of the aircraft.

[0029] In actual use, it is further convenient to drive the positioning block 10 . In this embodiment, a pull plate 18 is installed at one end of the positioning block 10 away from the positioning groove 11 . The pull plate 18 facilitates driving the positioning block 10 to move in the movable groove 9 .

[0030] In actual use, it is further convenient to limit the pull plate 18. In this embodiment, a groove 19 is opened on the side wall of the fixing seat 5. The groove 19 is adapted to the pull plate 18. The groove 19 facilitates the storage and adaptation of the pull plate 18 and also has a limiting effect on the pull plate 18.

[0031] Preferably, in this embodiment, the spiral blade 2 adopts a special curved shape, so that the spiral blade 2 generates a greater propulsion force during movement while reducing resistance loss.

[0032] During actual use, it is further convenient for the screw rod 8 to push the positioning block 10 to move. In this embodiment, the end of the positioning block 10 close to the positioning groove 11 is designed with a slope. The positioning block 10 with a slope design can make the screw rod 8 push the positioning block 10 to automatically retract during the descent process, thereby realizing self-locking of the positioning block 10 and the positioning groove 11.

[0033] In order to explain in detail the possible application scenarios, technical principles, specific schemes that can be implemented, and the purposes and effects that can be achieved, the following is a detailed description of the specific embodiments listed in conjunction with the accompanying drawings. The embodiments described herein are only used to more clearly illustrate the technical solutions of the present application, and are therefore only used as examples, and cannot be used to limit the scope of protection of the present application.

[0034] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel low-noise energy-saving propeller for underwater vehicles, comprising a propeller body (1), a spiral blade (2), a pressure relief hole (3) and a fixing device, characterized in that: The inner cavity of the propeller body (1) is evenly arranged with a plurality of groups of spiral blades (2), and a plurality of pressure reducing holes (3) are arranged on the spiral blades (2). The spiral blades (2) adopt a shaftless pump jet propulsion system. The fixing device comprises a connecting rod (4), a fixing seat (5), a first connecting plate (6), a second connecting plate (7), a screw rod (8), a movable groove (9), a positioning block (10), a positioning groove (11), a slider (12), a slide groove (13) and a spring (14). The first connecting plate (6) is installed at one end of the connecting rod (4), and the second connecting plate (7) is installed at both left and right ends of the propeller body (1). The first connecting plate (6) and the second connecting plate (7) are both provided with threaded holes (15). The second connecting plate (7) ) is installed at the bottom end of the fixing seat (5), the fixing seat (5) is provided with a thread groove (16) passing through the threaded hole (15), the fixing seat (5) is provided with a movable groove (9) passing through the thread groove (16), the positioning block (10) is movably installed in the movable groove (9), the side wall of the screw rod (8) is provided with a positioning groove (11), the positioning groove (11) is adapted to the positioning block (10), the upper and lower ends of the movable groove (9) are provided with the sliding groove (13), the sliding block (12) is slidably installed in the sliding groove (13), the spring (14) supporting the sliding block (12) is installed in the sliding groove (13), and the two groups of the sliding blocks (12) are respectively fixedly connected to the upper and lower side walls of the positioning block (10).

2. A novel low-noise energy-saving underwater vehicle propeller according to claim 1, characterized in that: A fixing rod (17) is fixedly installed in the sliding groove (13), and the fixing rod (17) passes through the spring (14) and is slidably connected to the sliding block (12).

3. A novel low-noise energy-saving underwater vehicle propeller according to claim 2, characterized in that: The outer wall of the connecting rod (4) is designed with rounded corners.

4. A new type of low-noise energy-saving underwater vehicle propeller according to claim 3, characterized in that: The spiral blades (2) are designed to have five groups.

5. A novel low-noise energy-saving underwater vehicle propeller according to claim 4, characterized in that: A pull plate (18) is installed at one end of the positioning block (10) away from the positioning groove (11).

6. A novel low-noise energy-saving underwater vehicle propeller according to claim 5, characterized in that: A groove (19) is provided on the side wall of the fixing seat (5), and the groove (19) is adapted to fit the pulling plate (18).

7. A new type of low-noise energy-saving underwater vehicle propeller according to claim 6, characterized in that: The spiral blade (2) adopts a special curved shape.

8. The novel low-noise and energy-saving underwater vehicle propeller according to claim 7 is characterized by: One end of the positioning block (10) close to the positioning groove (11) is designed as an inclined surface.

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