Power device of underwater vehicle

Abstract

The utility model relates to the field of underwater vehicles, in particular to a power device of an underwater vehicle. Comprising a shell, a main shaft and a pushing part, and a fairing is arranged outside the rotating face of the pushing part; the pushing part comprises a propeller and a guide plate, the propeller and the guide plate are coaxial with the main shaft and are arranged front and back in the length direction of the main shaft, and the end, away from the pushing part, of the main shaft is connected with a driving device; the propeller is provided with a propeller hub and blades, the blades are evenly fixed to the outer edge of the propeller hub in the radial direction, and the propeller hub is fixed to the main shaft and driven by the main shaft to drive the blades to rotate around the axes of the blades. The multiple flow guide plates are arranged around the main shaft, and the two ends of any flow guide plate are fixed to the shell and the fairing correspondingly.

Description

Technical Field

[0001] The utility model relates to the field of submersibles, in particular to a power device for a submersible. Background Art

[0002] At present, most of the underwater submersibles on the market adopt a structure with a single propeller blade at the tail. The main function of the propeller is to convert the power generated by the main engine of the submersible into the power for forward or backward movement. However, due to the influence of underwater tides, flow directions and flow velocities, the single propeller will be subjected to water resistance pressures in multiple directions, and the magnitudes are uneven; this will affect the thrust of the propeller, and the power efficiency loss is relatively large. Content of the Utility Model

[0003] The purpose of the utility model is to provide a power device for a submersible to solve the problems of poor operability of the single-propeller submersible in the prior art and being easily interfered by the outside world.

[0004] The technical solution of the utility model is: a power device for a submersible, including a housing, a main shaft and a propulsion part. A fairing is arranged outside the rotating surface of the propulsion part; the propulsion part includes a propeller and a deflector. The propeller and the deflector are coaxial with the main shaft and are arranged front and back along the length direction of the main shaft. One end of the main shaft far from the propulsion part is connected to a driving device;

[0005] The propeller has a hub and blades. The blades are uniformly fixed along the radial direction at the outer edge of the hub, and the hub is fixed to the main shaft and drives the blades to rotate around its own axis under the drive of the main shaft;

[0006] A plurality of deflectors are arranged around the main shaft, and both ends of any deflector are respectively fixed to the housing and the fairing.

[0007] Preferably, the diameter of the minimum circumscribed circle of the axial projection of the deflector is smaller than the diameter of the rotating surface of the propeller. Correspondingly, the projection of the fairing along the radial direction of the housing is arranged in a streamlined structure.

[0008] Preferably, nine deflectors are arranged, and a water flow channel is formed between any two adjacent deflectors.

[0009] Preferably, the fairing is fixed to the housing through a bracket.

[0010] Preferably, a plurality of brackets are arranged and are configured as stabilizer surfaces.

[0011] Compared with the prior art, the advantages of the utility model are:

[0012] (1) In this application, the propeller and the deflector are coaxially arranged. When the water flow in the running direction of the submersible passes through the propeller, the propeller does work on the water flow, so that while the submersible moves forward, the water flow is introduced into the water flow channel formed by the deflector. This can not only reduce the influence of the lateral water flow on the thrust, but also reduce the generation of cavitation and the noise and vibration impact on the submersible caused by the cavitation explosion, thereby increasing the propulsion efficiency and the overall thrust.

[0013] (2) In this application, the projected area of the bracket along the axial direction of the housing is smaller than the projected area of the bracket along the radial direction of the housing, so that the resistance when the bracket runs along the axial direction of the main shaft is much smaller than the resistance when it runs along the radial direction of the main shaft and the resistance when it rolls around the main shaft. Therefore, damping is provided for the rolling of the submersible, enabling the submersible to maintain a straight attitude and improving the operability of the submersible. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present utility model will be further described below in conjunction with the drawings and embodiments:

[0015] Figure 1 It is a cross-sectional view of a power device of a submersible according to the present utility model;

[0016] Figure 2 It is a structural diagram of the propeller according to the present utility model;

[0017] Figure 3 It is a structural diagram of the fairing and the bracket according to the present utility model;

[0018] Figure 4 It is a structural diagram of the deflector according to the present utility model;

[0019] Wherein: 1. Housing, 2. Main shaft, 3. Driving device, 4. Propeller, 41. Propeller blade, 42. Propeller hub, 5. Deflector, 6. Fairing, 7. Bracket. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The content of the present utility model will be further described in detail below in conjunction with specific embodiments:

[0021] As Figure 1 - Figure 4 shown, a power device of a submersible includes a housing 1 arranged on the outside, a main shaft 2 penetrates through the housing 1, one end of the main shaft 2 is connected with a driving device 3, and the other end is arranged outside the tail end of the housing 1 and is connected with a propulsion part. The driving device 3 drives the main shaft 2 to drive the propulsion part to rotate around its own axis, thereby generating a propulsion force.

[0022] During the operation of the submersible, it is vulnerable to the influence of turbulent flows from different directions. When the turbulent flow along the radial direction of the shell 1 acts on the propulsion part, it is likely to cause a change in the running direction of the submersible. Therefore, in this application, a fairing 6 is provided outside the propulsion part to weaken the influence of the turbulent flow.

[0023] The cross-section of the fairing 6 along the axial direction of the shell 1 is set to be circular. After the turbulent flow acts on the fairing 6, it will flow along the surface of the fairing 6 and gradually spread during the flow process, reducing the impact force of the turbulent flow on the propulsion part. In addition, the cross-section of the fairing 6 along the radial direction of the shell 1 is set to be streamlined to reduce the resistance during the operation of the submersible.

[0024] In this embodiment, the propulsion part includes a propeller 4 and a deflector 5. Among them, the propeller 4 and the deflector 5 are coaxial with the main shaft 2 and are arranged front and back along the length direction of the main shaft 2. The propeller 4 is driven to rotate by the main shaft 2. When the water flow in the running direction of the submersible passes through the propeller 4, the propeller 4 does work on the water flow, accelerating the water flow while the submersible moves forward. As Figure 4 shown, nine deflectors 5 are provided. The two ends of any deflector 5 are respectively connected to the shell 1 and the fairing 6, and a water flow channel is formed between adjacent deflectors 5. The accelerated water flow is pushed out after passing through the water flow channels between the deflectors 5. Because the fairing 6 is set to be a streamlined structure, the diameter of the minimum circumscribed circle of the projection of the deflector 5 along the axial direction is smaller than the diameter of the rotating surface of the propeller 4.

[0025] As Figure 3 shown, in this embodiment, the fairing 6 is fixed to the shell 1 through a bracket 7. Four brackets 7 are provided and form a cross-shaped structure. Moreover, while the bracket 7 plays a role in fixing the fairing 6, it is also configured as a stabilizer. In addition, in this embodiment, the projected area of the bracket 7 along the axial direction of the shell 1 is smaller than the projected area of the bracket 7 along the radial direction of the shell 1, making the resistance of the bracket 7 during the operation along the axial direction of the main shaft 2 much smaller than the resistance during the operation along the radial direction of the main shaft 2 and the resistance during the roll around the main shaft 2. Therefore, the setting of the bracket 7 provides damping for the roll of the submersible, enabling the submersible to maintain a straight attitude and improving the operability of the submersible.

[0026] As Figure 2 shown, the propeller 4 has a hub 42 and seven blades 41 arranged around the hub 42. In this embodiment, both the hub 42 and the hub 42 are sleeved on the tail end of the main shaft 2. In other embodiments, the hub 42 and the hub 42 can also be integrally formed with the main shaft 2.

[0027] In addition, cavitation will be generated when the propeller 4 agitates the water flow. Therefore, in this embodiment, the axial distance between the propeller 4 and the guide vane 5 is set to 13 millimeters. The propeller 4 can push the water flow towards the rear end of the submersible by rotating, and introduce the water flow into the water flow channels formed by the nine guide vanes 5, and smoothly and evenly advance the water flow pushed backward through the water flow channels. At the same time, the cavitation generated when the propeller 4 rotates will be naturally discharged through the nine water flow channels, which also reduces the noise and vibration generated when the cavitation breaks.

[0028] The above embodiments are only used to illustrate the technical concept and characteristics of the present invention, and the purpose is to enable those who are familiar with this technology to understand the content of the present invention and implement it accordingly, and it cannot be used to limit the protection scope of the present invention. For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, it is intended to include all changes falling within the meaning and scope of the equivalent elements of the claims in the present invention.

Claims

1. A submersible power device, characterized in that: The invention comprises a housing (1), a main shaft (2) and a driving part, wherein a fairing (6) is arranged outside the rotating surface of the driving part; the driving part comprises a propeller (4) and a guide plate (5), wherein the propeller (4) and the guide plate (5) are coaxial with the main shaft (2) and are arranged front and rear along the length direction of the main shaft (2); and an end of the main shaft (2) away from the driving part is connected to a driving device (3); The propeller (4) comprises a propeller hub (42) and propeller blades (41), the propeller blades (41) being evenly fixed in a radial direction at the outer edge of the propeller hub (42), and the propeller hub (42) being fixed to the main shaft (2), and driven by the main shaft (2) to drive the propeller blades (41) to rotate around its own axis; A plurality of guide plates (5) are arranged around the main shaft (2), and two ends of any guide plate (5) are respectively fixed to the housing (1) and the fairing (6).

2. A submersible power device according to claim 1, characterized in that: The diameter of the minimum circumscribed circle of the guide plate (5) projected in the axial direction is smaller than the diameter of the rotating surface of the propeller (4), and accordingly, the projection of the fairing (6) in the radial direction of the housing (1) is arranged to be a streamlined structure.

3. A submersible power device according to claim 2, characterized in that: The guide plates (5) are arranged in nine numbers, and a water flow channel is formed between any adjacent guide plates (5).

4. A submersible power device according to claim 1, characterized in that: The fairing (6) is fixed to the housing (1) via a bracket (7).

5. A submersible power device according to claim 4, characterized in that: The bracket (7) is arranged in plurality and is constructed as a stabilizer surface, and the plurality of brackets (7) are stationary relative to the housing (1).

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