A wind turbine blade

Abstract

The utility model relates to wind power generation technical field, concretely is a kind of wind turbine blade, including stand, install groove, servo motor, rotating seat, blade and reinforcing assembly, the top of stand is equipped with install groove, the inner wall of install groove is fixedly connected with servo motor, the output of servo motor is fixedly connected with rotating seat, the surface of rotating seat is fixedly connected with three blades and, the surface of blade is fixedly connected with reinforcing assembly, reinforcing assembly includes the protrusion fixedly connected on the surface of blade, the inside of blade is equipped with empty slot, the inner wall of empty slot is fixedly connected with reinforcing batten. The utility model, by setting reinforcing assembly, can disturb airflow boundary layer, reduce air separation phenomenon, improve the wind energy utilization coefficient of blade, improve the bending strength of blade, prolong the fatigue life, reduce the maintenance cycle of blade, provide key support for the reliability of wind power generation, ensure the operation stability of blade.

Description

Technical Field

[0001] This utility model relates to the field of wind power generation technology, and in particular to a wind turbine blade. Background Technology

[0002] In the field of wind power generation, the performance of wind turbine blades plays a crucial role in the power generation efficiency and stability of wind turbines. Blades are the most fundamental and critical components of wind turbines; their good design, reliable quality, and superior performance are decisive factors in ensuring the normal and stable operation of the unit. Blade design directly affects the wind energy conversion efficiency and its annual power generation, making it a vital link in wind energy utilization. From the perspective of energy conversion mechanisms, blades capture wind energy and convert it into mechanical energy through aerodynamic design. Their airfoil structure, material strength, and dynamic characteristics directly affect the wind energy conversion efficiency. When the blades cut into the airflow at the optimal angle of attack, the wind energy utilization coefficient can be increased to its theoretical maximum. During this process, the aerodynamic design precision and fatigue strength of the blades are directly reflected in the difference in annual power generation.

[0003] The existing device has insufficient fatigue strength and is prone to cracking during long-term operation; the blade edge protection of the existing device is poor and its aerodynamic performance deteriorates significantly after being eroded by wind and sand. Utility Model Content

[0004] The purpose of this invention is to solve the problems of poor fatigue resistance and insufficient edge protection of existing devices, and to propose a wind turbine blade.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wind turbine blade, comprising a column, a mounting slot, a servo motor, a rotating base, blades, and a reinforcing assembly. The top of the column has a mounting slot, the inner wall of which is fixedly connected to a servo motor. The output end of the servo motor is fixedly connected to a rotating base. Three blades are fixedly connected to the surface of the rotating base. A reinforcing assembly is fixedly connected to the surface of the blades. The reinforcing assembly includes a protrusion fixedly connected to the surface of the blades. A hollow groove is formed inside the blade, and a reinforcing rib is fixedly connected to the inner wall of the hollow groove.

[0006] Furthermore, the blade is made of aluminum alloy, the surface of the blade is coated with an anti-wear coating, and the edge of the blade surface is provided with a side strip assembly.

[0007] Furthermore, the edge strip assembly includes a retaining groove formed at the edge of the blade, and a protective strip is attached to the inner wall of the retaining groove.

[0008] Furthermore, a sliding cavity is provided at the top of the protective strip, and a groove is provided at the top of the blade, with a return spring fixed to the inner bottom wall of the groove.

[0009] Furthermore, one end of the reset spring is fixedly connected to a sliding column, and the surface of the sliding column is slidably connected to the inner wall of the sliding cavity.

[0010] Furthermore, a limiting groove is provided at the top of the sliding column, and the inner wall of the limiting groove rotates and engages with a limiting strip.

[0011] Furthermore, the bottom of the limiting strip abuts against the top of the protective strip, and a spiral groove is provided on the top of the limiting strip. A positioning element is threadedly connected to the inner wall of the spiral groove, and the surface of the positioning element is engaged with the inner wall of the sliding cavity.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] 1. In this utility model, by setting up a reinforcing component, the protrusions are evenly distributed on the blade surface, which can disrupt the airflow boundary layer, reduce air separation, and improve the wind energy utilization coefficient of the blade. The reinforcing ribs are made of high-strength aluminum alloy profiles, which can improve the bending strength of the blade and extend its fatigue life. This component achieves multiple objectives: it can ensure structural strength, extend the effective cycle of the aerodynamic shape through the wear-resistant surface of the protrusions, reduce the maintenance cycle of the blade, provide key support for the reliability of wind power generation, ensure the operational stability of the blade, and reduce the vibration amplitude.

[0014] 2. In this utility model, by setting the edge strip assembly, the protective strip can effectively resist wind and sand erosion and reduce the wear degree of the blade edge. The locking groove engages with the protective strip, and with the return spring pulling the sliding column into the sliding cavity, a mechanical locking structure is formed to prevent the protective strip from falling off during high-speed rotation. The limiting locking strip cooperates with the spiral groove of the positioning component to realize the quick installation and removal of the protective strip. After the positioning component is rotated to unlock the limiting locking strip, the time for replacing the protective strip is shortened. This component can improve the protective performance of the blade edge and extend the overall service life of the blade. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional front view of a wind turbine blade;

[0016] Figure 2 This utility model provides an exploded structural diagram of a wind turbine blade.

[0017] Figure 3 This utility model provides a structural schematic diagram of the edge strip assembly in a wind turbine blade;

[0018] Figure 4 This utility model provides a schematic diagram of the positioning structure of the edge strip assembly in a wind turbine blade;

[0019] Figure 5 This utility model provides a structural schematic diagram of a reinforcing component in a wind turbine blade.

[0020] Legend:

[0021] 1. Column; 2. Mounting slot; 3. Servo motor; 4. Rotary seat; 5. Blade; 6. Reinforcing component; 61. Protrusion; 62. Hollow slot; 63. Reinforcing rib; 7. Side strip assembly; 71. Locking strip groove; 72. Protective strip; 73. Sliding cavity; 74. Groove; 75. Return spring; 76. Sliding column; 77. Limiting rotating groove; 78. Limiting locking strip; 79. Spiral groove; 710. Positioning component. Detailed Implementation

[0022] Please see Figure 1-5 This utility model provides a technical solution: a wind turbine blade, including a column 1, a mounting groove 2, a servo motor 3, a rotating base 4, blades 5 and a reinforcing component 6. The top of the column 1 is provided with a mounting groove 2, the inner wall of the mounting groove 2 is fixedly connected to the servo motor 3, the output end of the servo motor 3 is fixedly connected to the rotating base 4, three blades 5 are fixedly connected to the surface of the rotating base 4, and the surface of the blades 5 is fixedly connected to the reinforcing component 6.

[0023] The following section will explain the specific settings and functions of the reinforcement component 6 and the edge strip component 7.

[0024] In this embodiment: the reinforcing component 6 includes a protrusion 61 fixedly connected to the surface of the blade 5, and a slot 62 is provided inside the blade 5. The inner wall of the slot 62 is fixedly connected to a reinforcing rib 63.

[0025] The effects achieved by the above components are as follows: by setting the protrusion 61, the airflow boundary layer can be disturbed, the eddy current loss on the surface of the blade 5 can be reduced, and the aerodynamic efficiency can be improved. The ribs 63 are made of aluminum alloy profiles, which can reduce weight while improving the bending strength and torsional stiffness of the blade 5.

[0026] Specifically, the blade 5 is made of aluminum alloy, the surface of the blade 5 is coated with an anti-wear coating, and the edge of the blade 5 is provided with a side strip assembly 7.

[0027] The effects achieved by the above components are as follows: by setting the blades 5 of aluminum alloy material, the tensile strength is enhanced, and the wear-resistant coating is a nano-ceramic composite coating, which can resist the erosion and wear of wind and sand particles and extend the service life of the blades 5.

[0028] Specifically, the edge strip assembly 7 includes a retaining groove 71 formed on the edge of the blade 5, and a protective strip 72 is attached to the inner wall of the retaining groove 71.

[0029] The effects achieved by the above components are as follows: by setting the locking groove 71 and the protective strip 72 to engage, the protective strip 72 can be quickly installed, reducing installation time. The protective strip 72 can effectively resist the erosion of sand particles under high wind speed and reduce the wear rate.

[0030] Specifically, the top of the protective strip 72 is provided with a sliding cavity 73, the top of the blade 5 is provided with a groove 74, and a return spring 75 is fixed to the inner bottom wall of the groove 74.

[0031] The effect achieved by the above components is that by setting the sliding cavity and the sliding column 76 to form a precise sliding fit, the restoring force generated by the return spring 75 ensures a reliable connection between the sliding column 76 and the sliding cavity 73.

[0032] Specifically, one end of the return spring 75 is fixedly connected to a sliding column 76, and the surface of the sliding column 76 is slidably connected to the inner wall of the sliding cavity 73.

[0033] The effect achieved by the above components is to ensure that the sliding column 76 slides smoothly in the sliding cavity 73 by setting the sliding column 76 and the sliding cavity 73, while improving wear resistance.

[0034] Specifically, a limiting groove 77 is provided at the top of the sliding column 76, and the inner wall of the limiting groove 77 rotates and engages with a limiting strip 78.

[0035] The effect achieved by the above components is as follows: by setting the limiting groove 77, the limiting strip 78 is provided with rotation space, ensuring that the limiting strip 78 rotates accurately and engages firmly.

[0036] Specifically, the bottom of the limiting strip 78 abuts against the top of the protective strip 72, and the top of the limiting strip 78 is provided with a spiral groove 79. The inner wall of the spiral groove 79 is threaded with a positioning element 710, and the surface of the positioning element 710 is engaged with the inner wall of the sliding cavity 73.

[0037] The effect achieved by the above components is as follows: by setting the limit strip 78 to fit tightly against the top of the protective strip 72, the protective strip 72 is prevented from loosening; after the positioning part 710 and the spiral groove 79 are screwed together, the positioning part 710 engages with the inner wall of the slide cavity 73, ensuring the reliable locking of the limit strip 78.

[0038] Working principle: By setting up the reinforcing component 6, the protrusions 61 are evenly distributed on the surface of the blade 5, which can disturb the airflow boundary layer, reduce air separation, and improve the wind energy utilization coefficient of the blade 5. The reinforcing ribs 63 are made of high-strength aluminum alloy profiles, which can improve the bending strength of the blade 5 and extend its fatigue life. This component achieves multiple goals: it can ensure structural strength, extend the effective cycle of aerodynamic shape through the wear-resistant surface of the protrusions 61, reduce the maintenance cycle of the blade, provide key support for the reliability of wind power generation, ensure the operational stability of the blade 5, and reduce the vibration amplitude.

[0039] By setting the edge strip assembly 7, the protective strip 72 can effectively resist wind and sand erosion and reduce the wear of the blade edge 5. The locking groove 71 engages with the protective strip 72, and the return spring 75 pulls the slide column 76 into the slide cavity 73 to form a mechanical locking structure to prevent the protective strip 72 from falling off during high-speed rotation. The limiting locking strip 78 cooperates with the spiral groove 79 of the positioning component 710 to realize the quick installation and removal of the protective strip 72. After rotating the positioning component 710 to unlock the limiting locking strip 78, the time for replacing the protective strip 72 is shortened. This component can improve the protection performance of the blade edge and extend the overall service life of the blade 5.

Claims

1. A wind turbine blade, comprising a column (1), a mounting slot (2), a servo motor (3), a swivel (4), a blade (5), and a reinforcing assembly (6), characterized in that: The top of the column (1) is provided with a mounting groove (2), and a servo motor (3) is fixedly connected to the inner wall of the mounting groove (2). A rotating base (4) is fixedly connected to the output end of the servo motor (3). Three blades (5) are fixedly connected to the surface of the rotating base (4), and a reinforcing component (6) is fixedly connected to the surface of the blades (5). The reinforcing component (6) includes a protrusion (61) fixedly connected to the surface of the blade (5), and a slot (62) is provided inside the blade (5), with reinforcing ribs (63) fixedly connected to the inner wall of the slot (62).

2. A wind turbine blade according to claim 1, characterized in that: The blade (5) is made of aluminum alloy, and the surface of the blade (5) is coated with an anti-wear coating. The edge of the blade (5) is provided with a side strip assembly (7).

3. A wind turbine blade according to claim 2, characterized in that: The edge strip assembly (7) includes a retaining groove (71) opened on the edge of the blade (5), and a protective strip (72) is attached to the inner wall of the retaining groove (71).

4. A wind turbine blade according to claim 3, characterized in that: The top end of the protective strip (72) is provided with a sliding cavity (73), the top end of the blade (5) is provided with a groove (74), and a return spring (75) is fixed to the inner bottom wall of the groove (74).

5. A wind turbine blade according to claim 4, characterized in that: One end of the return spring (75) is fixedly connected to a sliding column (76), and the surface of the sliding column (76) is slidably connected to the inner wall of the sliding cavity (73).

6. A wind turbine blade according to claim 5, characterized in that: The top of the sliding column (76) is provided with a limiting groove (77), and the inner wall of the limiting groove (77) rotates and is engaged with a limiting strip (78).

7. A wind turbine blade according to claim 6, characterized in that: The bottom of the limiting strip (78) abuts against the top of the protective strip (72). The top of the limiting strip (78) is provided with a spiral groove (79). The inner wall of the spiral groove (79) is threaded with a positioning element (710). The surface of the positioning element (710) is engaged with the inner wall of the sliding cavity (73).

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