Novel propeller blade
By designing a cushion structure and water tank with arc-shaped facade and blades on the propeller blades, increasing the water flow area and reaction force, the problems of insufficient power and collision risks of traditional propeller blades are solved, and more efficient and safe propeller operation.
Patent Information
- Application Number
- CN202421267026.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-04
- Publication Date
- 2024-12-31
- Estimated Expiration
- 2034-06-04
AI Technical Summary
Traditional propeller blades are inadequate in design and are susceptible to collision risks, resulting in low working efficiency and insufficient safety at the same design size.
Design a new type of propeller blade, including a cubicle structure with a curved facade and a blade. The structure formed by the curved facade and a blade increases the water flow area and passes through the curved facade and the blade. Inclination and oversink design provide greater reaction force to increase power while reducing collision risk.
By increasing the water run area and reaction force, the new propeller blades can provide greater power than traditional propellers at smaller diameter sizes, reducing collision risks, and improving work efficiency and safety.
Smart Images
Figure CN222272328U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of propellers, and particularly relates to a novel propeller blade. Background Art
[0002] The propeller blades of a ship refer to the blades that can rotate in the water, which are devices that convert the engine's rotational power into propulsion. There may be two or more blades connected to the hub. At present, traditional propeller blades are basically designed to have a blade-like structure with a twist angle. The blades are designed to be flat blades or have shallow dimples. The working efficiency of propeller blades with this design is not high enough. In order to obtain greater propeller power, the designer generally designs the propeller to have a larger diameter, that is, to increase the length of the blades. However, this extended blade increases the risk of the propeller blades being hit during operation.
[0003] Therefore, a new type of propeller blade with greater power and lower collision risk under the same design size is urgently needed. Utility Model Content
[0004] The utility model provides a novel propeller blade, which is used to solve the technical problems that common propeller blades in the prior art are either insufficient in power or large in size and easily subject to collision danger.
[0005] The utility model is achieved through the following technical scheme: a novel propeller blade, comprising a hub and a blade, wherein the blade comprises a blade surface and a blade root, a trailing edge, a blade tip and a guide edge surrounding the edge of the blade surface, the blade root is fixed on the hub, the trailing edge and the blade tip are provided with an arc-shaped vertical surface along the side facing the water-facing surface of the blade surface, and the arc-shaped vertical surface and the water-facing surface of the blade surface form a pocket-shaped structure.
[0006] In order to better realize the utility model, further optimization is made in the above structure, and the arc-shaped vertical surface and the blade surface are an integrated structural component.
[0007] In order to better realize the utility model, further optimization is made in the above structure, and the arc-shaped vertical surface is welded and fixed on the blade surface.
[0008] In order to better realize the utility model, further optimization is made in the above structure, and the blade surface is a curved surface.
[0009] In order to better implement the utility model, further optimization is made in the above structure, and the position of the side where the blade surface contacts the trailing edge is higher than the position of the side where the blade surface contacts the leading edge.
[0010] In order to better realize the utility model, further optimization is made in the above structure, and the inclination angle of the arc-shaped vertical surface relative to the blade surface is α, 45°<α<135°.
[0011] In order to better realize the utility model, further optimization is made in the above structure, and a water groove is formed between the end of the arc-shaped vertical surface close to the propeller hub and the propeller hub.
[0012] In order to better realize the utility model, further optimization is made in the above structure, the number of the blades is at least two, and at least two of the blades are fixedly connected to the hub in a centrally symmetrical manner with the hub as the axis.
[0013] Compared with the prior art, the utility model has the following beneficial effects:
[0014] The novel propeller blade provided by the utility model comprises a hub and a blade, wherein the blade comprises a blade surface and a blade root, a trailing edge, a blade tip and a guide edge surrounding the edge of the blade surface, the blade root is fixed on the hub, and the trailing edge and the blade tip are provided with an arc-shaped vertical surface along the side of the water-facing surface of the blade surface, and the arc-shaped vertical surface and the water-facing surface of the blade surface form a pocket-shaped structure. With this structure, by providing the arc-shaped vertical surface on the trailing edge and blade tip side of the blade surface, the blade surface is strengthened, and the pocket-shaped structure formed by the arc-shaped vertical surface and the blade surface is used to increase the water-carrying area of the blade, and the incoming flow entering from the guide edge side can be fully held when the propeller is running, and the held incoming flow can be pushed backward in a direction nearly perpendicular to the blade surface under the rotational force, thereby providing a more sufficient reaction force for the blade, thereby providing the propeller with greater power than a traditional propeller of the same size with a smaller diameter size, making the utility model more practical. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.
[0016] Figure 1 It is a structural schematic diagram of a novel propeller blade in the utility model;
[0017] Figure 2 It is a top view of the novel propeller blade in the utility model.
[0018] In the figure:
[0019] 1-hub; 2-blade; 3-blade root; 4-following edge; 5-blade tip; 6-guide edge; 7-arc vertical surface; 8-water trough; 9-blade surface. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the technical solution of the utility model will be described in detail below. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other implementation methods obtained by ordinary technicians in this field without creative work belong to the scope of protection of the utility model.
[0021] In the description of the present utility model, it should be noted that, unless otherwise specified, "multiple" means two or more; the orientations or positional relationships indicated by the terms "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present utility model. In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0022] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.
[0023] Embodiment 1:
[0024] In this embodiment, a new type of propeller blade, such as Figure 1 As shown, it includes a hub 1 and a blade 2. Specifically, the blade 2 includes a blade surface 9 and a blade root 3, a trailing edge 4, a blade tip 5 and a guide edge 6 surrounding the edge of the blade surface 9. The blade root 3 is fixed on the hub 1. The trailing edge 4 and the blade tip 5 are provided with an arc-shaped vertical surface 7 along the water-facing side of the blade surface 9. The arc-shaped vertical surface 7 and the water-facing surface of the blade surface 9 form a pocket-shaped structure.
[0025] By adopting this structure, the arc-shaped vertical surface 7 is arranged on one side of the trailing edge 4 of the blade surface 9, and the arc-shaped vertical surface 7 acts as a reinforcing rib for the blade surface 9, thereby enhancing the anti-collision deformation ability of the blade, and the pocket-shaped structure formed by the arc-shaped vertical surface 7 and the blade surface 9 increases the water-carrying area of the blade 2. When the propeller is running, the incoming flow entering from the side of the guide edge 6 can be fully held, and the held incoming flow can be pushed backward in a direction nearly perpendicular to the blade surface 9 under the rotational force, providing a more sufficient reaction force for the blade 2, thereby providing the propeller with greater power than a traditional propeller of the same size with a smaller diameter size, making the practicality of the utility model stronger.
[0026] In this embodiment, the above-mentioned curved vertical surface 7 and the above-mentioned blade surface 9 are an integrated structural component, and the above-mentioned curved vertical surface 7 can be formed by bending on one side of the trailing edge 4 and the blade tip 5 of the above-mentioned blade, so as to achieve the purpose of forming a pocket-like structure with the above-mentioned blade to increase the water-carrying area, thereby increasing the power of the blade 2.
[0027] In this embodiment, the arc-shaped vertical surface 7 can also be fixed to the trailing edge 4 and the blade tip 5 of the blade surface 9 by sealing welding.
[0028] Furthermore, the blade surface 9 is a curved surface, and is slightly concave toward the side away from its water-facing surface, so that the pocket-shaped structure formed by the blade surface 9 and the curved vertical surface 7 is more three-dimensional, increasing the amount of water held, thereby providing a greater reaction force for the blade 2.
[0029] In this embodiment, Figure 1 As shown, the position of the side where the blade surface 9 contacts the trailing edge 4 is higher than the position of the side where the blade surface 9 contacts the guiding edge 6, thereby increasing the height difference between the trailing edge 4 and the guiding edge 6 of the blade surface 9, further increasing the water-carrying area of the blade 2, and improving the power of the blade 2.
[0030] As a specific implementation of this embodiment, the inclination angle of the above-mentioned curved vertical surface 7 relative to the above-mentioned blade surface 9 is α, and the length, width, height dimensions of the above-mentioned curved vertical surface 7 and the inclination angle α with the blade surface 9 can be designed according to actual needs, and can be vertical, obtuse or acute, and the specific range is 45°<α<135°.
[0031] In this embodiment, Figure 1 As shown, a water groove 8 is formed between one end of the arc-shaped vertical surface 7 close to the hub 1 and the hub 1. During the rotation of the propeller, the water groove 8 can allow part of the incoming water to pass through, thereby preventing the arc-shaped vertical surface 7 from being overloaded with pressure and causing stress concentration.
[0032] As an optimized implementation of this embodiment, Figure 2As shown, the number of the blades 2 is at least two, and at least two of the blades 2 are fixedly connected to the hub 1 in a centrally symmetrical manner with the hub 1 as the axis, which can provide greater working efficiency and power.
[0033] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A new type of propeller blade, characterized in that: The invention comprises a propeller hub (1) and a propeller blade (2), wherein the propeller blade (2) comprises a blade surface (9) and a blade root (3), a trailing edge (4), a blade tip (5) and a guide edge (6) surrounding the edge of the blade surface (9), wherein the blade root (3) is fixed to the propeller hub (1), and the trailing edge (4) and the blade tip (5) are provided with an arc-shaped vertical surface (7) along a side of a water-facing surface of the blade surface (9), and the arc-shaped vertical surface (7) and the water-facing surface of the blade surface (9) form a pocket-shaped structure.
2. A novel propeller blade according to claim 1, characterized in that: The arc-shaped vertical surface (7) and the blade surface (9) are an integrated structural component.
3. A novel propeller blade according to claim 1, characterized in that: The arc-shaped vertical surface (7) is welded and fixed on the blade surface (9).
4. A novel propeller blade according to claim 1, characterized in that: The blade surface (9) is a curved surface.
5. A novel propeller blade according to claim 1, characterized in that: The position of the side of the blade surface (9) in contact with the trailing edge (4) is higher than the position of the side of the blade surface (9) in contact with the leading edge (6).
6. A novel propeller blade according to claim 1, characterized in that: The inclination angle of the arc-shaped vertical surface (7) relative to the blade surface (9) is α, and 45°<α<135°.
7. A novel propeller blade according to claim 1, characterized in that: A water channel (8) is formed between one end of the arc-shaped vertical surface (7) close to the propeller hub (1) and the propeller hub (1).
8. A novel propeller blade according to any one of claims 1 to 7, characterized in that: The number of the blades (2) is at least two, and at least two of the blades (2) are fixedly connected to the hub (1) in a centrally symmetrical manner with the hub (1) as the axis.