Telescopic tidal current energy water turbine blade

Abstract

The utility model relates to a telescopic tidal current energy water turbine blade, which belongs to the technical field of water turbine blades and comprises a tidal current energy water turbine runner hub, a secondary mother blade, a primary mother blade, a son blade, a waterproof motor and a ball screw. And the second-stage mother blade is provided with a storage groove corresponding to the first-stage mother blade. According to the utility model, the plurality of waterproof motors can be synchronously started through the same stepping controller, so that the plurality of primary mother blades can extend out of the secondary mother blades, the lengths of the plurality of blades can be adjusted, and the primary mother blades and the son blades can extend to the optimal length in a tidal current with a relatively high flow speed so as to capture more energy; and in the tidal current with the low flow speed, the primary mother blade and the secondary blade can contract, the resistance is reduced, the efficiency is improved, the secondary blade can rotate within a certain angle range, the attack angle of the blade can be adjusted according to the tidal current, and therefore the energy capture efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of water turbine blade technology, and in particular to a retractable tidal current turbine blade. Background Technology

[0002] With the continuous growth of global energy demand and the urgent need for the development of renewable energy, tidal energy, as an abundant and stable renewable energy source, has attracted widespread attention for its development and utilization. Against this backdrop, the technological advancement of tidal turbines has become a research focus. However, existing turbine blades have certain limitations in design and have revealed many shortcomings, which provides an opportunity for the development of new blades.

[0003] Most existing tidal power turbine blades adopt a fixed design. Although they can achieve high energy conversion efficiency under standardized flow velocities, their performance is inadequate in complex and variable flow environments. This fixed blade design makes it unable to effectively cope with dynamic flow conditions such as flow velocity fluctuations and flow direction changes, resulting in energy loss and efficiency reduction during actual operation. In addition, since these blades are usually designed with little consideration for the dynamic adaptability of materials, they often suffer from fatigue and wear after long-term operation, reducing the overall reliability of the equipment.

[0004] To address these challenges, a retractable tidal current turbine blade is proposed. This blade, with its adjustable structure, can adjust its angle and shape according to changes in the flow environment, achieving optimal operating conditions. The retractable design not only improves energy capture efficiency under different flow velocities and directions but also significantly reduces losses caused by flow instability during operation. For example, in strong tidal currents, the blade can retract to reduce resistance, while in lower flow velocities, it can extend to increase resistance, maximizing energy capture. This adjustment mechanism allows the new blade to surpass traditional designs in adaptability and efficiency, maintaining good durability and stability under various operating conditions. Furthermore, the blade's flexibility and adjustability help reduce the impact of water flow on other components, lowering overall system maintenance costs and failure rates. Utility Model Content

[0005] This invention provides a retractable tidal current turbine blade that solves the problems mentioned in the background. The blade length can be adjusted according to the strength of the tidal current, thereby further improving its applicability and more effectively capturing flowing energy.

[0006] The present invention provides the following solution to the above-mentioned technical problems: A retractable tidal current turbine blade includes a tidal current turbine runner body, a secondary mother blade, a primary mother blade, a daughter blade, a waterproof motor, and a ball screw. The tidal current turbine runner body and the secondary mother blade are fixedly connected. The secondary mother blade has a receiving groove corresponding to the primary mother blade. The primary mother blade and the daughter blade are connected by bolts. The waterproof motor is installed in the receiving groove. A drive gear is fixedly installed on the drive end of the waterproof motor. The ball screw is rotatably connected to a sealing groove. A receiving gear is fixedly installed on the ball screw. The receiving gear meshes with the drive gear. A screw nut is fixedly installed on the primary mother blade corresponding to the ball screw.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, three secondary mother blades are provided, and the three secondary mother blades are evenly arranged and connected to the tidal power turbine runner. The three secondary mother blades can drive the tidal power turbine runner to rotate.

[0009] Furthermore, the primary mother blade is fixedly connected to a limiting slider, and the secondary mother blade is provided with a sealing groove corresponding to the limiting slider. The limiting slider and the sealing groove are slidably connected, so that the primary mother blade can smoothly enter and exit within the sealing groove of the secondary mother blade.

[0010] Furthermore, the ball screw is provided with anti-slip protrusions, and the receiving gear has a limit groove corresponding to the anti-slip protrusions, so that the ball screw can stably drive the receiving gear to rotate and connect.

[0011] Furthermore, the primary mother blade has an anti-detachment groove corresponding to the ball screw, and the ball screw is fixedly installed with an anti-detachment block, so that the ball screw can slide stably within the anti-detachment groove of the primary mother blade.

[0012] Furthermore, the sub-blades are uniformly fixed with connecting blocks, and the primary mother blade has a mounting groove corresponding to the connecting block. The sub-blades can adjust their orientation angle at the primary mother blade and then be positioned by bolts.

[0013] Furthermore, the waterproof motor is a waterproof stepper motor with a brake function. Multiple waterproof motors are connected to the same stepper controller, enabling multiple sets of waterproof motors to start and stop synchronously, and allowing multiple secondary mother blades and primary mother blades to extend and retract synchronously to adjust their length.

[0014] This invention provides a retractable tidal current turbine blade, which has the following advantages:

[0015] 1. Multiple waterproof motors can be started synchronously through the same stepper controller, allowing multiple primary mother blades to extend from the secondary mother blades. This allows for adjustment of the length of multiple blades. In fast-flowing currents, the primary mother blades and daughter blades can extend to their optimal length to capture more energy. In slow-flowing currents, the primary mother blades and daughter blades can retract to reduce resistance and improve efficiency. The daughter blades can rotate within a certain angle range, and the angle of attack of the blades can be adjusted according to the current flow to improve energy capture efficiency.

[0016] 2. During the extension and retraction of the primary mother blade, the anti-detachment block can slide in the anti-detachment groove, and the limiting slider can slide in the sealing groove, so that the primary mother blade can slide smoothly in the receiving groove of the secondary mother blade, making the extension and retraction process of the secondary mother blade and the primary mother blade more stable.

[0017] 3. When the tidal current speed is high, the blades of this retractable tidal current turbine can be adjusted to extend to obtain more energy. When the tidal current speed is low or the direction changes, the blade angle can be adjusted or the blades can be retracted to adapt to the new tidal current conditions. This design has better applicability and can improve power generation efficiency.

[0018] The above description is merely an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it according to the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings. The specific implementation methods of this utility model are given in detail in the following embodiments and their accompanying drawings. Attached Figure Description

[0019] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0020] Figure 1 A three-dimensional rendering of a retractable tidal current turbine blade provided for an embodiment of this utility model;

[0021] Figure 2 A front view of a retractable tidal current turbine blade in the extended state, provided as an embodiment of the present invention;

[0022] Figure 3 A front view of a retractable tidal current turbine blade in its retracted state, provided as an embodiment of this utility model;

[0023] Figure 4 A schematic diagram of the structure of a retractable tidal current turbine blade ball screw provided in an embodiment of this utility model;

[0024] Figure 5 A schematic diagram of the retractable tidal current turbine blade in the retracted state, provided as an embodiment of the present invention;

[0025] Figure 6 This is a structural schematic diagram of a retractable tidal current turbine blade in the extended state, provided as an embodiment of the present invention.

[0026] The attached diagram lists the components represented by each number as follows:

[0027] 1. Tidal power turbine runner; 2. Second-stage mother blade; 3. First-stage mother blade; 4. Sub-blade; 5. Receiving groove; 6. Limiting slider; 7. Sealing groove; 8. Waterproof motor; 9. Drive gear; 10. Ball screw; 11. Receiving gear; 12. Anti-slip ridge; 13. Screw nut; 14. Anti-detachment groove; 15. Anti-detachment block; 16. Connecting block. Detailed Implementation

[0028] The following is in conjunction with the appendix Figure 1-6 The principles and features of this utility model are described below. The examples given are for illustrative purposes only and are not intended to limit the scope of this utility model. The utility model is described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. The advantages and features of this utility model will become clearer from the following description and claims. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this utility model.

[0029] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0030] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0031] like Figure 1-6As shown, a retractable tidal current turbine blade includes a tidal current turbine runner body 1, a secondary mother blade 2, a primary mother blade 3, a daughter blade 4, a waterproof motor 8, and a ball screw 10. The tidal current turbine runner body 1 and the secondary mother blade 2 are fixedly connected. The secondary mother blade 2 has a receiving groove 5 corresponding to the primary mother blade 3. The primary mother blade 3 and the daughter blade 4 are connected by bolts. The waterproof motor 8 is installed in the receiving groove 5. A drive gear 9 is fixedly installed on the drive end of the waterproof motor 8. The ball screw 10 is rotatably connected to a sealing groove 7. A receiving gear 11 is fixedly installed on the ball screw 10. The receiving gear 11 meshes with the drive gear 9. A screw nut 13 is fixedly installed on the primary mother blade 3 corresponding to the ball screw 10.

[0032] Preferably, there are three secondary mother blades 2, which are evenly arranged and connected to the tidal power turbine runner 1. The three secondary mother blades 2 can drive the tidal power turbine runner 1 to rotate.

[0033] Preferably, the primary mother blade 3 is fixedly connected to the limiting slider 6, and the secondary mother blade 2 is provided with a sealing groove 7 corresponding to the limiting slider 6. The limiting slider 6 and the sealing groove 7 are slidably connected, so that the primary mother blade 3 can smoothly enter and exit within the sealing groove 7 of the secondary mother blade 2.

[0034] Preferably, the ball screw 10 is provided with anti-slip protrusions 12, and the receiving gear 11 is provided with a limit groove corresponding to the anti-slip protrusions 12, so that the ball screw 10 can stably drive the receiving gear 11 to rotate and connect.

[0035] Preferably, the primary mother blade 3 has an anti-detachment groove 14 corresponding to the ball screw 10, and the ball screw 10 is fixedly installed with an anti-detachment block 15, so that the ball screw 10 can slide stably within the anti-detachment groove 14 of the primary mother blade 3.

[0036] Preferably, the sub-blade 4 is uniformly fixedly installed with connecting blocks 16, and the primary mother blade 3 is provided with a mounting groove corresponding to the connecting block 16. The sub-blade 4 can adjust its orientation angle at the primary mother blade 3 and then be positioned by bolts.

[0037] Preferably, the waterproof motor 8 is a waterproof stepper motor with a brake function. Multiple waterproof motors 8 are connected to the same stepper controller signal, so that multiple sets of waterproof motors 8 can start and stop synchronously, and multiple secondary mother blades 2 and primary mother blades 3 can extend and retract synchronously to adjust their length.

[0038] The specific working principle and usage method of this utility model are as follows: Multiple waterproof motors 8 can be synchronously started by a stepper controller to rotate the drive gear 9. The drive gear 9 is meshed with the receiving gear 11. The waterproof motor 8 can drive the ball screw 10 to rotate. The ball screw 10 is threadedly connected to the screw nut 13, so that the ball screw 10 can drive the screw nut 13 and its connected primary mother blade 3 to move in the receiving groove 5, so that the primary mother blade 3 can extend from the secondary mother blade 2, thereby adjusting the overall length of the blade. During the extension and retraction of the primary mother blade 3, the anti-detachment block 15 can be in the anti-detachment groove. The sliding limit slider 6 can slide within the sealing groove 7, allowing the primary mother blade 3 to slide smoothly within the receiving groove 5 of the secondary mother blade 2. This makes the extension and retraction process of the secondary mother blade 2 and the primary mother blade 3 more stable. The daughter blade 4 can rotate within a certain angle range and adjust the angle of attack of the blades according to the current flow, thereby improving the energy capture efficiency. In a fast current flow, the primary mother blade 3 and the daughter blade 4 can extend to the optimal length to capture more energy, while in a slow current flow, the primary mother blade 3 and the daughter blade 4 can retract to reduce resistance and improve efficiency.

[0039] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Those skilled in the art can readily implement this utility model based on the accompanying drawings and the above description. However, any modifications, alterations, or variations made by those skilled in the art without departing from the scope of the utility model's technical solution, utilizing the disclosed technical content, are equivalent embodiments of this utility model. Furthermore, any equivalent changes, alterations, or variations made to the above embodiments based on the essential technology of this utility model are still within the protection scope of this utility model's technical solution.

Claims

1. A retractable tidal current turbine blade, comprising a tidal current turbine runner (1), a secondary mother blade (2), a primary mother blade (3), a daughter blade (4), a waterproof motor (8), and a ball screw (10), characterized in that: The tidal power turbine runner (1) and the secondary mother blade (2) are fixedly connected. The secondary mother blade (2) has a receiving groove (5) corresponding to the primary mother blade (3). The primary mother blade (3) and the daughter blade (4) are connected by bolts. The waterproof motor (8) is installed in the receiving groove (5). The drive end of the waterproof motor (8) is fixedly installed with a drive gear (9). The ball screw (10) is rotatably connected to the sealing groove (7). The ball screw (10) is fixedly installed with a receiving gear (11). The receiving gear (11) meshes with the drive gear (9). The primary mother blade (3) is fixedly installed with a screw nut (13) corresponding to the ball screw (10).

2. The retractable tidal current turbine blade according to claim 1, characterized in that, The secondary mother blade (2) is provided in three parts, and the three secondary mother blades (2) are evenly arranged and connected to the tidal power turbine runner (1).

3. The retractable tidal current turbine blade according to claim 1, characterized in that, The primary mother blade (3) is fixedly connected to a limiting slider (6), and the secondary mother blade (2) is provided with a sealing groove (7) corresponding to the limiting slider (6). The limiting slider (6) and the sealing groove (7) are slidably connected.

4. The retractable tidal current turbine blade according to claim 1, characterized in that, The ball screw (10) is provided with anti-slip ridges (12), and the receiving gear (11) has a limit groove corresponding to the anti-slip ridges (12).

5. The retractable tidal current turbine blade according to claim 1, characterized in that, The primary mother blade (3) has an anti-detachment groove (14) corresponding to the ball screw (10), and the ball screw (10) is fixedly installed with an anti-detachment block (15).

6. The retractable tidal current turbine blade according to claim 1, characterized in that, The sub-blade (4) is uniformly fixed with connecting blocks (16), and the primary mother blade (3) has an installation groove corresponding to the connecting block (16).

7. The retractable tidal current turbine blade according to claim 1, characterized in that, The waterproof motor (8) is a waterproof stepper motor with a brake function, and multiple waterproof motors (8) are connected to the same stepper controller.

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