Adsorption type fan blade vibration suppression device and wind generating set

Abstract

The utility model discloses an adsorption type fan blade vibration suppression device and a wind generating set, which comprise two first vibration suppression units arranged on the suction surface of a blade in a linear structure and a second vibration suppression unit arranged on the pressure surface of the blade in a sine curve structure, the two first vibration suppression units are arranged on the two sides of a vortex generator of the blade in parallel, the multiple first adsorption assemblies are arranged in the length direction of the blade at equal intervals, each first adsorption assembly is fixed to the suction face of the blade through adsorption, and a first turbulent flow assembly is connected between every two adjacent first adsorption assemblies. And the second vibration suppression unit comprises a plurality of second adsorption assemblies and a plurality of second turbulent flow assemblies, the multiple second adsorption assemblies are arranged at equal intervals in the length direction of the blade, and the second turbulent flow assemblies are connected between every two adjacent second adsorption assemblies. The utility model has the advantages of good shape follow-up property, strong turbulent flow capacity, convenience in assembly and disassembly, no interference with other pneumatic accessories and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of wind turbine blades, in particular to an adsorption type fan blade vibration suppression device and a wind power generation set. Background Art

[0002] With the increasingly mature development and utilization of wind power resources in China, wind farms are spread all over the country and their scale is increasing day by day. As a result, due to various reasons such as the construction and management of wind farms, a large number of wind turbines may be in a state of being unpowered or shut down and powered off for a long time, leading to an increased risk of blade damage.

[0003] When the blade is in a non - power - generating operating state, the blade is affected by the oncoming wind from all directions, causing each cross - section of the blade to be in a large - angle - of - attack deep - stall area. Due to the action of aerodynamic force, the first - order or second - order flutter aerodynamic damping is usually negative. At this time, the blade exhibits self - excited vibration with obvious amplitude, causing excessive loads on the blade and some components of the unit, which may lead to the destruction of the unit.

[0004] By installing a vibration suppression device on the blade surface, the aerodynamic shape of the blade can be changed, and the airflow on the blade surface can be weakened, thereby achieving the effect of suppressing blade vibration, which has been widely used in the wind power industry. The currently commonly used vibration suppression device is an anti - vibration net sleeve. Usually, a rope is pulled from the blade tip to the hub to install the anti - vibration net sleeve on the blade surface. The installation of the anti - vibration net sleeve is difficult. If it is installed too loosely, the conformability is poor; if it is installed too tightly, it will be damaged by the blade tip. After installation, the anti - vibration net sleeve will interfere with the noise - reducing sawteeth, vortex generators, etc. on the blade surface, damaging the aerodynamic accessories. The tensioning rope sways in the air and is easily worn and broken, and there is a risk of the anti - vibration net sleeve falling off.

[0005] Therefore, there is an urgent need for an adsorption type fan blade vibration suppression device with good conformability, strong flow - disturbing ability, easy loading and unloading, and no interference with other aerodynamic accessories. Summary of the Utility Model

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an adsorption type fan blade vibration suppression device, which has the advantages of good conformability, strong flow - disturbing ability, easy loading and unloading, and no interference with other aerodynamic accessories.

[0007] Another purpose of the utility model is to provide a wind power generation set.

[0008] The purpose of the utility model is achieved by the following technical solutions:

[0009] An adsorption type fan blade vibration suppression device includes a first vibration suppression unit arranged in a straight line structure on the suction surface of the blade and a second vibration suppression unit arranged in a sine curve structure on the pressure surface of the blade. There are two first vibration suppression units, and the two first vibration suppression units are arranged in parallel on both sides of the vortex generator of the blade. Each first vibration suppression unit includes a plurality of first adsorption components and a plurality of first flow disturbing components. The plurality of first adsorption components are arranged at equal intervals along the length direction of the blade. Each first adsorption component is fixed on the suction surface of the blade by adsorption. A first flow disturbing component is connected between two adjacent first adsorption components. The second vibration suppression unit includes a plurality of second adsorption components and a plurality of second flow disturbing components. The plurality of second adsorption components are arranged at equal intervals along the length direction of the blade. Each second adsorption component is fixed on the pressure surface of the blade by adsorption. A second flow disturbing component is connected between two adjacent second adsorption components.

[0010] Furthermore, both the first adsorption component and the second adsorption component include an electric suction cup main body, a handle, an electric switch, and a charging port. The bottom of the electric suction cup main body is fixed on the blade surface by adsorption, and its bottom is a curved surface structure that fits the curvature of the blade surface. The top of the electric suction cup main body is respectively provided with a handle, an electric switch, and a charging port. The electric switch is electrically connected to a remote controller, and the working state of the electric suction cup main body is controlled by controlling the electric switch through the remote controller. The handle is connected to the adjacent first flow disturbing component or second flow disturbing component.

[0011] Furthermore, both the first flow disturbing component and the second flow disturbing component include a nylon rope, a spring buckle, and a plurality of flow disturbing parts. The two ends of the nylon rope are respectively connected to the handles of two adjacent first adsorption components or the handles of two adjacent second adsorption components. The plurality of flow disturbing parts are installed on the nylon rope through spring buckles.

[0012] Furthermore, the flow disturbing part is a triangular prism foam block, a fishing net, or a cloth piece.

[0013] Furthermore, noise reduction sawteeth are pasted on the trailing edge of the blade.

[0014] Furthermore, the vortex generator is pasted on the suction surface of the blade along the length direction of the blade.

[0015] Another object of the present invention is achieved by the following technical solution:

[0016] A wind power generation set includes the above-mentioned adsorption type fan blade vibration suppression device.

[0017] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0018] 1. The vibration suppression device of the present utility model realizes the installation and positioning of linear structures, sine curve structures or other shapes through adsorption installation and combined connection. It has strong flow disturbance ability, does not interfere with other pneumatic accessories, can effectively improve the aerodynamic shape of the blade, and enhances the anti-vibration ability of the blade.

[0019] 2. The vibration suppression device of the present utility model is installed on the blade through adsorption connection, achieving better conformity, and being convenient for installation and disassembly. After recycling, it can be disassembled and restored, thus realizing the reuse of materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic installation diagram of the vibration suppression device on the suction surface of the blade.

[0021] Figure 2 It is a schematic installation diagram of the vibration suppression device on the pressure surface of the blade.

[0022] Figure 3 It is a schematic structural diagram of the first adsorption component and the second adsorption component. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] To make the objectives, technical solutions and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Embodiment 1:

[0025] As Figures 1 to 3 shown, this embodiment provides an adsorption type fan blade vibration suppression device, which includes a first vibration suppression unit arranged in a linear structure on the suction surface 501 of the blade 5 and a second vibration suppression unit arranged in a sine curve structure on the pressure surface 502 of the blade 5. There are two first vibration suppression units, and the two first vibration suppression units are arranged in parallel on both sides of the eddy current generator 6 of the blade 5. Each first vibration suppression unit includes a plurality of first adsorption components 1 and a plurality of first flow disturbance components 2. The plurality of first adsorption components 1 are arranged at equal intervals along the length direction of the blade 5. Each first adsorption component 1 is fixed on the suction surface of the blade 5 through adsorption. A first flow disturbance component 2 is connected between two adjacent first adsorption components 1. The second vibration suppression unit includes a plurality of second adsorption components 3 and a plurality of second flow disturbance components 4. The plurality of second adsorption components 3 are arranged at equal intervals along the length direction of the blade 5. Each second adsorption component 3 is fixed on the pressure surface of the blade 5 through adsorption. A second flow disturbance component 4 is connected between two adjacent second adsorption components 3.

[0026] In this embodiment, the first adsorption component 1 and the second adsorption component 3 have the same structure, both including an electric suction cup main body 101, a handle 102, an electric switch 103 and a charging port 104. The electric suction cup main body 101 has strong adsorption, and has an automatic air replenishment function and a remote control air release function. Its bottom is adsorbed and fixed on the surface of the blade 5, and its bottom is a curved surface structure that fits the curvature of the blade 5 surface. The top of the electric suction cup main body 101 is respectively provided with a handle 102, an electric switch 103 and a charging port 104. The electric switch 103 can be controlled by button or remotely controlled, and it is electrically connected to a remote controller. By controlling the electric switch 103 through the remote controller, the working state of the electric suction cup main body 101 is controlled. The handle 102 is connected to the adjacent first spoiler component 2 or the second spoiler component 4. Each of the above adsorption components is independent and can be adsorbed at different positions on the surface of the blade 5 for specific permutations and combinations.

[0027] Furthermore, the spoiler 202 is a triangular prism foam block, a fishing net or a cloth piece.

[0028] In this embodiment, the first spoiler component 2 and the second spoiler component 4 have the same structure, both including a nylon rope 201, a spring lock (not shown in the figure) and a plurality of spoilers 202. The two ends of the nylon rope 201 are respectively connected to the handles 102 of two adjacent first adsorption components 1 or the handles 102 of two adjacent second adsorption components 3. The plurality of spoilers 202 are installed on the nylon rope 201 through spring locks.

[0029] Specifically, noise-reducing sawteeth 7 are pasted on the trailing edge 503 of the blade 5; the vortex generator 6 is pasted on the suction surface of the blade along the blade length direction.

[0030] The vibration suppression device of this embodiment can adapt to the blade shape and wind resource conditions, achieving the effect of reducing the blade lift and increasing the blade drag. The adsorption components can firmly adsorb at any position on the blade surface, making the vibration suppression device have better conformability. The spoiler components can change the aerodynamic shape of the blade, absorb the wind force on the periphery of the blade, and improve the service life of the blade.

[0031] In addition, in practical applications, based on the specific conditions of the blade surface (pressure surface and suction surface) and wind resource conditions (such as whether there are vortex generators and noise-reducing sawteeth installed, and the complex incoming flow direction in mountainous terrain), a vibration suppression device layout scheme that does not interfere with other aerodynamic accessories and has good spoiler effect can be designed, including but not limited to the linear layout scheme and sine curve layout scheme of this embodiment, and can also be designed into other special-shaped combination positioning schemes.

[0032] Embodiment 2:

[0033] This embodiment provides a wind turbine generator, including the adsorption type fan blade vibration suppression device described in Embodiment 1.

[0034] As described above, it is only a preferred embodiment of the utility model patent, but the protection scope of the utility model patent is not limited thereto. Any person skilled in the art within the scope disclosed by the utility model patent, making equivalent substitutions or changes according to the technical solution of the utility model patent and its inventive concept, shall fall within the protection scope of the utility model patent.

Claims

1. An adsorption type fan blade vibration suppression device, characterized in that: It includes a first vibration suppression unit arranged in a straight line structure on the suction surface of the blade and a second vibration suppression unit arranged in a sine curve structure on the pressure surface of the blade. There are two first vibration suppression units, which are arranged in parallel on both sides of the vortex generator of the blade. Each first vibration suppression unit includes a plurality of first adsorption components and a plurality of first flow disturbing components. The plurality of first adsorption components are arranged at equal intervals along the length direction of the blade. Each first adsorption component is fixed on the suction surface of the blade by adsorption. A first flow disturbing component is connected between two adjacent first adsorption components. The second vibration suppression unit includes a plurality of second adsorption components and a plurality of second flow disturbing components. The plurality of second adsorption components are arranged at equal intervals along the length direction of the blade. Each second adsorption component is fixed on the pressure surface of the blade by adsorption. A second flow disturbing component is connected between two adjacent second adsorption components.

2. The vibration suppression device for an adsorption type fan blade according to claim 1, wherein: The first adsorption component and the second adsorption component both include an electric suction cup body, a handle, an electric switch and a charging port. The bottom of the electric suction cup body is fixed on the blade surface by adsorption, and its bottom is a curved surface structure that fits the curvature of the blade surface. The top of the electric suction cup body is respectively provided with a handle, an electric switch and a charging port. The electric switch is electrically connected to a remote controller, and the working state of the electric suction cup body is controlled by controlling the electric switch through the remote controller. The handle is connected to the adjacent first flow disturbing component or second flow disturbing component.

3. The vibration suppression device for an adsorption type fan blade according to claim 1, wherein: The first flow disturbing component and the second flow disturbing component both include a nylon rope, a spring buckle and a plurality of flow disturbing members. The two ends of the nylon rope are respectively connected to the handles of two adjacent first adsorption components or the handles of two adjacent second adsorption components. The plurality of flow disturbing members are installed on the nylon rope through spring buckles.

4. The vibration suppression device for an adsorption type fan blade according to claim 3, wherein: The flow disturbing member is a triangular prism foam block, a fishing net or a cloth piece.

5. The vibration suppression device for an adsorption type fan blade according to claim 1, wherein: Noise reduction sawteeth are pasted on the trailing edge of the blade.

6. The vibration suppression device for an adsorption type fan blade according to claim 1, wherein: The vortex generator is pasted on the suction surface of the blade along the length direction of the blade.

7. A wind power generating set, characterized in that: It includes the adsorption type fan blade vibration suppression device according to any one of claims 1 to 6.

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