A horizontal axis tidal current power generator rectifier tail wing device

Abstract

This invention discloses a rectifier tail fin device for a horizontal axis tidal current generator, comprising two side-by-side torsional tail fins fixedly connected to the housing of the horizontal axis tidal current generator set; the two torsional tail fins have opposite torsional directions and are spirally twisted. This invention, through the design of two sets of opposing torsional tail fins, can achieve mutual counter-current flow. When the torsional directions of the two sets of tail fins are opposite, the vortex directions they generate are also opposite. This mutual counter-current effect helps to further consume the energy of the wake, achieve rapid dissipation, reduce energy loss, and achieve the effect of counter-current dissipation, reducing the impact of wake effects on the horizontal axis tidal current generator. This improves stability and control performance, enhances the operating efficiency, stability, and lifespan of the horizontal axis tidal current generator, and provides a better solution for the application of horizontal axis tidal current generators.

Description

Technical Field

[0001] This invention relates to the field of tidal power generation technology, and in particular to a rectifier tail fin device for a horizontal axis tidal power generator. Background Technology

[0002] Tidal energy is a new type of renewable energy, characterized by strong periodicity and high energy density, giving it advantages over solar and wind energy in terms of predictability and stability. However, existing tidal energy power generation equipment has limited research and application, leaving a huge market gap. Therefore, developing reliable and stable tidal energy power generation devices has become a research hotspot.

[0003] Numerous types of tidal current power generation devices have been proposed in the field of existing tidal current power generation technology research. For example, Chinese utility model patent CN 105065189 B discloses a "self-convection horizontal axis tidal current power generation device." In this device, the main components, including the impeller, generator, pressure cap, oil filling device, housing, and housing cover, rotate 360° around the support axis under the impact of the tidal current, ensuring that the impeller's upstream face always faces the tidal current direction. However, this device has not yet considered the impact of wake effects in the working environment on power generation efficiency and device stability. In fluid dynamics, a wake refers to the flow region created behind an object moving in a fluid. Fluid flow in the wake region is affected by the object's motion, generating vortices and disturbances, causing changes in the fluid's velocity and direction, and thus creating unstable flow patterns. This instability can cause the object's trajectory to deviate from the expected path, affecting the object's stability and control accuracy. Furthermore, fluid flow in the wake region generates noise and vibration, leading to fatigue damage or structural failure of the object.

[0004] Based on the above theory, under the mutual influence of factors such as wake, the water flow will concentrate at the tail of the tidal power generation device, generating strong eddies and disturbances. This phenomenon not only increases the energy loss of the water flow, but also increases the impact load on the tidal power generation device, reduces the operational stability of the tidal power generation device, accelerates the wear of the turbine, and leads to a decrease in power generation efficiency, thereby reducing the power generation efficiency of a single unit or the entire unit.

[0005] To address this, a horizontal axis tidal power generator rectifier tail fin device is proposed. Summary of the Invention

[0006] The purpose of this invention is to provide a horizontal axis tidal power generator rectifier tail fin device, which aims to solve or improve at least one of the above-mentioned technical problems.

[0007] To achieve the above objectives, the present invention provides the following solution: The present invention provides a horizontal axis tidal current generator rectifier tail fin device, including two torsion tail fins arranged side by side, the two torsion tail fins being fixedly connected to the housing of the horizontal axis tidal current generator set;

[0008] The two twist tail fins twist in opposite directions, and the twist tail fins are twisted in a spiral shape.

[0009] According to the present invention, a rectifier tail fin device for a horizontal axis tidal power generator is provided, wherein two of the torsion tail fins are welded to the housing of the horizontal axis tidal power generator set.

[0010] According to the present invention, a horizontal axis tidal current generator rectifier tail fin device is provided, wherein the torsion tail fin is made of high-strength material or lightweight material.

[0011] According to the present invention, a horizontal axis tidal current generator rectifier tail fin device is provided, wherein the high-strength material includes titanium alloy and high-strength aluminum alloy.

[0012] According to the present invention, a horizontal axis tidal current generator rectifier tail fin device is provided, wherein the lightweight material includes carbon fiber composite material and glass fiber composite material.

[0013] The present invention discloses the following technical effects:

[0014] The two torsional tail fins of this invention have opposite torsional directions and are spirally twisted. Through interaction with the fluid, the tail fins guide the wake from one side to the other, thus dispersing the wake. During the guidance of the wake, due to the viscosity and resistance of the fluid, the energy in the wake is gradually consumed. This energy consumption helps to reduce the energy loss of the wake and improve the operating efficiency of the device. Through the design of two sets of torsional tail fins with opposite directions, the wakes can be mutually offset. When the torsional directions of the two sets of tail fins are opposite, the vortex directions they generate are also opposite. This mutual offset helps to further consume the energy of the wake, achieve rapid dissipation, reduce its energy loss, and achieve the effect of offset dissipation, thereby reducing the impact of the wake effect on the horizontal axis tidal power generator.

[0015] This invention addresses the flow mechanism of tidal currents by designing the torsion tail fin as a spiral twist. The spiral twist of the torsion tail fin allows the airflow at the tail to pass more smoothly, reducing drag and thus improving the power generation efficiency of the downstream unit.

[0016] The torsion tail fin of the present invention can change the hydraulic characteristics of the water turbine, improve stability and control performance, improve the operating efficiency, stability and life of the horizontal axis tidal power generation device, and provide a better solution for the application of horizontal axis tidal power generator;

[0017] The torsion tail fin of the present invention reduces the impact of the wake effect. By optimizing the shape and structure of the torsion tail fin, it can improve the uniform distribution and diffusion of the wake, further reducing the impact and load on the device. It can effectively reduce the fatigue damage of the turbine structure and materials caused by the wake effect and extend the service life of the equipment. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of the present invention;

[0020] Figure 2 This is an isometric view of the present invention;

[0021] Figure 3 This is a diagram illustrating the arrayed arrangement effect of the present invention;

[0022] Among them, 1. Twist tail fin. Detailed Implementation

[0023] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0024] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0025] Reference Figure 1-3 The present invention provides a rectifier tail fin device for a horizontal axis tidal power generator, including two torsion tail fins 1 arranged side by side, the two torsion tail fins 1 being fixedly connected to the housing of the horizontal axis tidal power generator set;

[0026] The two twist tail fins 1 twist in opposite directions, and the twist tail fins 1 are twisted in a spiral shape;

[0027] With this configuration, the two torsional tail fins 1 of the present invention have opposite torsional directions and are spirally twisted. The tail fins guide the wake from one side to the other through interaction with the fluid, thereby dispersing the wake. During the guidance of the wake, the energy in the wake is gradually consumed due to the viscosity and resistance of the fluid. This energy consumption helps to reduce the energy loss of the wake and improve the operating efficiency of the device. Through the design of two sets of torsional tail fins 1 with opposite directions, the wakes can be mutually offset. When the torsional directions of the two sets of tail fins are opposite, the vortex directions they generate are also opposite. This mutual offset helps to further consume the energy of the wake, achieve rapid dissipation, reduce its energy loss, and achieve the effect of offset dissipation, thereby reducing the impact of the wake effect on the horizontal axis tidal power generator.

[0028] This invention addresses the flow mechanism of tidal currents by designing the torsion tail 1 as a spiral twist. The spiral twist of the torsion tail 1 allows the airflow at the tail to pass more smoothly, reducing resistance and thus improving the power generation efficiency of the downstream unit.

[0029] The torsion tail fin 1 of the present invention can change the hydraulic characteristics of the water turbine, improve stability and control performance, improve the operating efficiency, stability and life of the horizontal axis tidal power generation device, and provide a better solution for the application of horizontal axis tidal power generator;

[0030] The torsion tail fin 1 of the present invention reduces the influence of the wake effect. By optimizing the shape and structure of the torsion tail fin 1, the uniform distribution and diffusion of the wake can be improved, further reducing the impact and load on the device. It can effectively reduce the fatigue damage of the wake effect to the structure and materials of the turbine and extend the service life of the equipment.

[0031] To further optimize the design, two torsion tail fins 1 are welded to the housing of the horizontal axis tidal power generator. In order to reduce the weight of the device, improve its mobility, and reduce unnecessary connecting parts and reinforcements, the two torsion tail fins 1 are welded to the housing. High-quality welding process is used to ensure welding strength and sealing.

[0032] Further optimization of the design involves using either high-strength or lightweight materials for the torsion tail fin 1. Using high-strength materials ensures lightweight construction, corrosion resistance, and durability. Different materials can be selected to manufacture the torsion tail fin 1 for different application scenarios and operating conditions. For example, high-strength materials can be chosen for scenarios requiring high-impact resistance, while lightweight materials can be selected for scenarios requiring weight reduction.

[0033] The shape of the twist tail fin 1 is designed as a twist structure. The guiding effect on the wake is adjusted by adjusting the angle of the tail fin. The optimal angle setting is found through experiments or numerical simulations to achieve the best counter-shock and dissipation effect. The precise geometry and size ensure that it can effectively guide and disperse the wake.

[0034] Further optimization of the design incorporates high-strength materials, including titanium alloys and high-strength aluminum alloys, which can improve its corrosion resistance and durability.

[0035] Further optimization of the solution involves using lightweight materials, including carbon fiber composites and glass fiber composites, to achieve lightweighting.

[0036] Further optimize the plan, refer to the appendix. Figure 3 Four horizontal axis tidal current generator sets can be used, forming a diamond array. The four horizontal axis tidal current generator sets are located in the same plane. Each horizontal axis tidal current generator set includes two torsion tail fins 1 arranged side by side. The two torsion tail fins 1 are fixedly connected to the housing of the horizontal axis tidal current generator set. The array arrangement can improve the utilization rate of the water flow area, and the presence of the torsion tail fins can allow the airflow at the tail to pass more smoothly, reducing resistance and thus improving the power generation efficiency of the rear units.

[0037] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this invention, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this invention.

[0038] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation of the present invention. For those skilled in the art, other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. A horizontal axis tidal current generator rectifier tail fin device, characterized in that: It includes two torsion tail fins (1) arranged side by side, and the two torsion tail fins (1) are fixedly connected to the housing of the horizontal axis tidal power generator set; The two twist tail fins (1) twist in opposite directions and are spirally twisted.

2. The horizontal axis tidal power generator rectifier tail fin device according to claim 1, characterized in that: The two aforementioned torsion tail fins (1) are welded to the housing of the horizontal axis tidal power generator set.

3. The horizontal axis tidal current generator rectifier tail fin device according to claim 1, characterized in that: The twist tail fin (1) is made of high-strength or lightweight materials.

4. The horizontal axis tidal current generator rectifier tail fin device according to claim 3, characterized in that: The high-strength materials include titanium alloys and high-strength aluminum alloys.

5. The horizontal axis tidal current generator rectifier tail fin device according to claim 3, characterized in that: The lightweight materials include carbon fiber composites and glass fiber composites.

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