Anti-vortex-induced-vibration device for wind turbine blade, and mounting method therefor

Abstract

An anti-vortex-induced-vibration device (100) for a wind turbine blade (200), and a mounting method therefor. The mounting method comprises the following steps: providing a plurality of first strap assemblies (10), and sequentially arranging the plurality of first strap assemblies (10) in a blade tip region of the wind turbine blade (200) in the extension direction of the wind turbine blade (200); providing a plurality of first flow-disturbing blocks (20), and mounting the first flow-disturbing blocks (20) on each first strap assembly (10); providing a plurality of second strap assemblies (30), and arranging the plurality of second strap assemblies (30) at intervals in a target region in the extension direction of the wind turbine blade (200), wherein the target region is the region between the blade tip region and the root of the wind turbine blade (200); and providing at least one first connector (50), connecting all the first strap assemblies (10) to all the second strap assemblies (30) by using the first connector (50), and connecting one end of the first connector (50) to the root of the wind turbine blade (200).

Description

A vortex-induced shock device for wind turbine blades and its installation method Technical Field

[0001] This invention relates to the field of wind power equipment technology, and in particular to an anti-vortex-induced device and installation method for wind turbine blades. Background Technology

[0002] Wind turbine blades exhibit periodic vibrations due to hydrodynamic effects at specific wind speeds. This vibration typically arises from vortices formed by the blades in flowing air. When the frequency of these vortices detaching is close to the blade's natural frequency, resonance occurs, leading to significant vibrations. To suppress this vibration, anti-vortex-induced vibration devices are typically installed on the wind turbine blades. However, the stability of these devices directly impacts their effectiveness and the operational stability of the blades. Therefore, a method for stably installing anti-vortex-induced vibration devices is urgently needed. Summary of the Invention

[0003] One objective of this invention is to provide an installation method for an anti-vortex-induced device for wind turbine blades, thereby solving the technical problems in the prior art where unstable installation of the anti-vortex-induced device affects the anti-vortex-induced effect and the stability of blade operation.

[0004] A further objective of this invention is to improve the anti-vortex effect.

[0005] Another object of the present invention is to provide an anti-vortex-induced device to improve the anti-vortex-induced effect.

[0006] Specifically, the present invention provides a method for installing an anti-vortex device for wind turbine blades, comprising the following steps:

[0007] Multiple first binding strap assemblies are provided, and the multiple first binding strap assemblies are arranged sequentially along the extension direction of the wind turbine blade in the tip region of the wind turbine blade.

[0008] Multiple first aerodynamic blocks are provided, and the first aerodynamic blocks are installed on each of the first strap assemblies;

[0009] Multiple second binding strap assemblies are provided and the multiple second binding strap assemblies are arranged at intervals along the extension direction of the wind turbine blade in the target area, the target area being the area between the blade tip area and the blade root of the wind turbine blade;

[0010] At least one first connector is provided, which is used to connect all the first strap assemblies and all the second strap assemblies, and one end of the first connector is connected to the root of the wind turbine blade.

[0011] Optionally, in the step of setting multiple first baffles and installing the first baffles on each of the first strap assemblies, multiple first baffles are installed on each of the first strap assemblies, and the multiple first baffles are respectively arranged at the leading edge and trailing edge of the wind turbine blade.

[0012] Optionally, the step of providing multiple first strap assemblies and sequentially arranging the multiple first strap assemblies along the extension direction of the wind turbine blade in the tip region of the wind turbine blade further includes the following steps:

[0013] Multiple connecting straps are provided, and two adjacent first strap components are connected by at least one connecting strap;

[0014] Multiple second baffles are provided, and at least one second baffle is installed on each of the connecting strips.

[0015] Optionally, in the step of providing multiple connecting straps and connecting two adjacent first strap assemblies by at least one connecting strap, the two adjacent first strap assemblies are connected by multiple connecting straps, at least one connecting strap is arranged at the leading edge of the wind turbine blade, and at least one connecting strap is arranged at the trailing edge of the wind turbine blade.

[0016] Optionally, the step of providing a plurality of second strap assemblies and arranging the plurality of second strap assemblies at intervals along the extension direction of the wind turbine blades in the target area further includes:

[0017] A second connector is provided, and all the second strap assemblies are connected using the second connector. One end of the second connector is connected to the first strap assembly at the tail of the blade tip region, and the other end is connected to the root of the wind turbine blade.

[0018] Optionally, in the step of providing at least one first connector, connecting all the first strap assemblies and all the second strap assemblies using the first connector, and connecting one end of the first connector to the root of the wind turbine blade, one end of the first connector is connected to the rain guard ring at the root of the blade, the rain guard ring is equipped with a first anti-wear component, and the position where the first connector passes through the first anti-wear component is covered by a second anti-wear component.

[0019] Optionally, both the first strap assembly and the second strap assembly include a leading edge protection block, a trailing edge protection block, and at least one first strap, wherein the leading edge protection block and the trailing edge protection block are both mounted on the first strap.

[0020] In particular, the present invention also provides an anti-vortex-induced device for wind turbine blades, which, according to the above-described installation method, includes at least one group of tilted baffle blocks, each of the tilted baffle block groups comprising:

[0021] A first strap assembly includes at least one first strap and a leading edge protection block and a trailing edge protection block mounted on the first strap. The first strap is sleeved on a wind turbine blade, the leading edge protection block is located at the leading edge of the wind turbine blade, and the trailing edge protection block is located at the trailing edge of the wind turbine blade.

[0022] Multiple first baffles are installed on the first strap, and the multiple first baffles are respectively arranged at the leading edge and trailing edge of the wind turbine blade, and extend out of the leading edge and trailing edge of the wind turbine blade.

[0023] Optionally, all the first turbulence blocks are arranged at an angle toward the tip of the wind turbine blade or at an angle toward the root of the wind turbine blade.

[0024] Optionally, the tilt angle between the first turbulence block and the fan blade is any value between 10° and 80°.

[0025] This invention arranges multiple first binding strap assemblies on the tip region of a wind turbine blade, installs a first deflector block on each first binding strap assembly, then sets multiple second binding strap assemblies, and arranges them at intervals along the extension direction of the wind turbine blade in a target area, which is the area between the blade tip and the blade root. Finally, at least one first connector is provided to connect all the first and second binding strap assemblies, with one end of the first connector connected to the blade root. This technical solution, by adding multiple second binding strap assemblies and connecting them with the first connector, effectively fixes the first connector located in the target area to the wind turbine blade. On the one hand, this prevents the first connector in the target area from impacting the wind turbine blade and causing abnormal noise during operation; on the other hand, fixing the first connector with the second binding strap assemblies improves the stability of the connection between the first binding strap assemblies, thereby improving the stability of the first deflector block installation and ensuring anti-vortex-induced vibration.

[0026] Furthermore, this invention also includes multiple connecting straps, connecting adjacent first strap assemblies via at least one connecting strap. Then, multiple second baffles are provided, with at least one second baffle installed on each connecting strap. This technical solution, by using multiple connecting straps, improves the stability of the first strap assembly installation and facilitates the installation of the second baffles. The second baffles cause continuous disturbance to the external dimensions of the wind turbine blades, disrupting the continuous energy injection along the blade spanwise, thereby further improving the anti-vortex-induced effect.

[0027] The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments of the invention in conjunction with the accompanying drawings. Attached Figure Description

[0028] The following sections will describe some specific embodiments of the invention in detail by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or portions. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0029] Figure 1 is a schematic structural diagram of an anti-vortex device installed on a wind turbine blade at an angle according to an embodiment of the present invention;

[0030] Figure 2 is a schematic enlarged view of part A in Figure 1;

[0031] Figure 3 is a schematic structural diagram of an anti-vortex device installed on a wind turbine blade at another angle according to an embodiment of the present invention;

[0032] Figure 4 is a schematic structural diagram of a first strap assembly according to an embodiment of the present invention;

[0033] Figure 5 is a schematic structural diagram of a first strap according to an embodiment of the present invention;

[0034] Figure 6 is a schematic structural diagram of a trailing edge protection block according to an embodiment of the present invention;

[0035] Figure 7 is a schematic structural diagram of a leading edge protection block according to an embodiment of the present invention;

[0036] Figure 8 is a schematic structural diagram of a first turbulence block according to an embodiment of the present invention;

[0037] Figure 9 is a schematic flowchart of an installation method for a wind turbine blade anti-vortex device according to an embodiment of the present invention;

[0038] Figure 10 is a schematic flowchart of an installation method for a wind turbine blade anti-vortex device according to another embodiment of the present invention;

[0039] Figure 11 is a schematic flowchart of the installation method of the anti-vortex device for wind turbine blades according to another embodiment of the present invention.

[0040] Figure label:

[0041] 100-Anti-vortex-induced device, 200-Wind turbine blade, 10-First strap assembly, 20-First turbulence block, 30-Second strap assembly, 40-Second connector, 50-First connector, 60-Connecting strap, 70-Second turbulence block, 11-First strap, 12-Rear edge protection block, 13-Leading edge protection block, 111-First rope hole, 121-First part, 122-Second part, 123-Second rope hole, 124-Limiting groove, 131-Third rope hole, 21-Turbulence block body, 22-Second strap. Detailed Implementation

[0042] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0043] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature, that is, include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. When a feature "includes or contains" one or more of the features it encompasses, unless otherwise specifically stated, this indicates that other features are not excluded and may be further included.

[0044] Unless otherwise expressly specified and limited, the terms "connection," "installation," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art should be able to understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0045] Unless otherwise specified, all terms (including technical and scientific terms) used in the description of this embodiment have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains.

[0046] Figure 1 is a schematic structural diagram of an anti-vortex-induced device 100 installed on a wind turbine blade 200 at one angle according to an embodiment of the present invention. Figure 2 is a schematic enlarged view of part A in Figure 1. Figure 3 is a schematic structural diagram of an anti-vortex-induced device 100 installed on a wind turbine blade 200 at another angle according to an embodiment of the present invention. Figure 4 is a schematic structural diagram of a first binding assembly 10 according to an embodiment of the present invention. As shown in Figures 1 to 4, in a specific embodiment, the anti-vortex-induced device 100 of the wind turbine blade 200 includes at least one inclined baffle block group. Each inclined baffle block group includes a first binding assembly 10 and a plurality of first baffle blocks 20. The first binding assembly 10 includes at least one first binding strap 11 and a leading edge protection block 13 and a trailing edge protection block 12 installed on the first binding strap 11. The first binding strap 11 is sleeved on the wind turbine blade 200. The leading edge protection block 13 is located at the leading edge of the wind turbine blade 200. The trailing edge protection block 12 is located at the trailing edge of the wind turbine blade 200. Multiple first turbulence blocks 20 are installed on the first strap 11. The multiple first turbulence blocks 20 are respectively arranged on the leading edge and trailing edge of the fan blade 200, and extend out of the leading edge and trailing edge of the fan blade 200.

[0047] This embodiment, by setting a first turbulence block 20 and setting the first turbulence block 20 to extend beyond the leading and trailing edges of the fan blade 200, can indirectly affect the width of the airflow turbulence, which is equivalent to changing the chord length of the fan blade 200, thereby changing the vortex shedding frequency of the fan blade 200 section, affecting the injection of vortex vibration energy, and improving the anti-vortex excitation effect.

[0048] Furthermore, the fact that the surface of the first turbulence block 20 is higher than that of the fan blade 200 will also improve the anti-vortex effect.

[0049] In some embodiments, there are multiple tilted baffle blocks, which are spaced apart in the tip region of the wind turbine blade 200.

[0050] In some embodiments, the first turbulence block 20 arranged at the leading edge of the fan blade 200 is located on the pressure side of the fan blade 200, while the first turbulence block 20 arranged at the trailing edge of the fan blade 200 is located on the suction side of the fan blade 200. Alternatively, the first turbulence block 20 arranged at the leading edge of the fan blade 200 is located on the suction side of the fan blade 200, while the first turbulence block 20 arranged at the trailing edge of the fan blade 200 is located on the pressure side of the fan blade 200. This embodiment employs a helical arrangement to avoid the generation of in-phase vortex-induced forces on the fan blade 200, thus preventing vibration excitation.

[0051] Figure 5 is a schematic structural diagram of a first strap according to an embodiment of the present invention. As shown in Figure 5, the first strap 11 is elastic and has Velcro, which can be used to fix the first strap 11 so that it is fitted onto the wind turbine blade 200. In addition, the first strap 11 has at least one first threading hole 111. In this embodiment, the first strap 11 has three first threading holes 111. In another embodiment, the number of first threading holes 111 can be designed according to specific design requirements.

[0052] In some embodiments, the first strap assembly 10 includes two first straps 11. In other embodiments, the number of first straps 11 may be determined according to specific design requirements.

[0053] Figure 6 is a schematic structural diagram of a trailing edge protection block 12 according to an embodiment of the present invention. As shown in Figure 6, in some embodiments, the trailing edge protection block 12 is T-shaped and includes a first portion 121 and a second portion 122. The first portion 121 extends along the chordal direction of the wind turbine blade 200, and the second portion 122 is perpendicular to the first portion 121. At least one second rope hole 123 is provided on each of the first portion 121 and the second portion 122, and the second rope hole 123 is used to thread a first strap 11. Here, the number of second rope holes 123 can be determined according to the number of first straps 11; the more first straps 11 there are, the more second rope holes 123 there are. If there are two first straps 11, then two second rope holes 123 are also provided on the first portion 121, and the two second rope holes 123 are arranged side by side. The second rope holes 123 on the second portion 122 are aligned with the second rope holes 123 on the first portion 121.

[0054] In a preferred embodiment, in order to improve the stability of the installation of the trailing edge protection block 12, the second part 122 is provided with at least one second rope hole 123 on each side of the first part 121. The first strap 11 first passes through the second rope hole 123 on one side of the second part 122, then through the second rope hole 123 on the first part 121, and finally through the second rope hole 123 on the other side of the second part 122, thereby installing the trailing edge protection block 12 onto the first strap 11.

[0055] In some embodiments, the second part 122 of the trailing edge protection block 12 is further provided with a limiting groove 124, which engages with the trailing edge of the fan blade 200 to limit the trailing edge protection block 12 and prevent the trailing edge protection block 12 from moving.

[0056] In some embodiments, both the leading edge protection block 13 and the trailing edge protection block 12 are made of foam material.

[0057] Figure 7 is a schematic structural diagram of the leading edge protection block 13 according to an embodiment of the present invention. As shown in Figure 7, the leading edge protection block 13 is plate-shaped. The leading edge protection block 13 has at least one third rope hole 131 for threading a first strap 11. The number of third rope holes 131 is the same as the number of second rope holes 123 on the second part 122 of the trailing edge protection block 12.

[0058] Figure 8 is a schematic structural diagram of a first spoiler block 20 according to an embodiment of the present invention. As shown in Figure 8, in some embodiments, the first spoiler block 20 adopts a triangular prism structure, a cuboid structure, or a cylindrical structure. The first spoiler block 20 includes a spoiler block body 21 and at least one second strap 22, which is connected to the spoiler block body 21. The second strap 22 has Velcro for attaching the entire first spoiler block 20 to the first strap 11 of the first strap assembly 10. In this embodiment, the first spoiler block 20 has three second straps 22, which are spaced apart along the extension direction of the spoiler block body 21. In other embodiments, the number of second straps 22 can be set according to the extension length of the spoiler block body 21. The longer the length of the spoiler block body 21, the more second straps 22 are used to improve the stability of the connection of the spoiler block body 21.

[0059] In some embodiments, all the first baffles 20 are arranged at an angle toward the tip of the fan blade 200 or at the root of the fan blade 200. In other embodiments, the first baffles 20 may also be arranged perpendicular to the fan blade 200, depending on the design requirements.

[0060] In this embodiment, the first turbulence block 20 is arranged at an angle, which facilitates dismantling and saves the dismantling time of the anti-vortex device 100.

[0061] In some embodiments, the tilt angle between the first turbulence block 20 and the fan blade 200 is any value between 10° and 80°. For example, it can be 10°, 20°, 30°, 40°, 50°, 60°, 70° or 80°.

[0062] In some embodiments, the anti-vortex device 100 further includes at least one first connector 50, which is used to connect the first strap assembly 10 of all the tilted turbulence block groups. One end of the first connector 50 is connected to the root of the wind turbine blade 200, thereby fixing all the tilted turbulence block groups.

[0063] In some embodiments, the first connector 50 is a rope that can pass through a first threading hole 111 on the first strap 11 of the first strap assembly 10, thereby connecting multiple first strap assemblies 10 in series.

[0064] Referring to Figure 1, in some embodiments, the anti-vortex device 100 further includes a plurality of second strap assemblies 30, which are spaced apart along the extension direction of the wind turbine blade 200 in a target area, the target area being the area between the blade tip and the root of the wind turbine blade 200. The first connector 50 is also used to connect the plurality of second strap assemblies 30, thereby securing the plurality of first strap assemblies 10 together with the plurality of second strap assemblies 30 at the root of the wind turbine blade 200.

[0065] In this embodiment, multiple second binding strap assemblies 30 are additionally provided between the blade tip region and the blade root. The number of second binding strap assemblies 30 can be determined according to the length of the wind turbine blade 200, which can play a role in suppressing excessive air disturbance of the first connector 50.

[0066] In some embodiments, the structure of the second strap assembly 30 is identical to that of the first strap assembly 10. That is, both the first strap assembly 10 and the second strap assembly 30 include a leading edge protection block 13, a trailing edge protection block 12, and at least one first strap 11, with the leading edge protection block 13 and the trailing edge protection block 12 both mounted on the first strap 11. The first connector 50 firstly connects multiple first strap assemblies 10 sequentially, and then the first connector 50 sequentially connects to the first threading hole 111 on the first strap 11 of the second strap assembly 30, thereby connecting multiple first strap assemblies 10 and multiple second strap assemblies 30 in series. Here, the end of the first connector 50 is connected to the first strap 11 of the first first strap assembly 10 located in the blade tip region. The tail of the first connector 50 is connected to the root of the wind turbine blade 200, thereby securing multiple first strap assemblies 10 and multiple second strap assemblies 30.

[0067] In some embodiments, one end of the first connector 50 is connected to the rainproof ring at the blade root. A first anti-wear element is installed on the rainproof ring, and a second anti-wear element is wrapped around the part of the first connector 50 that passes through the first anti-wear element. Here, the first anti-wear element can be a cornice, and the second anti-wear element can be anti-wear tape. Wrapping the second anti-wear tape around the first connector 50 located at the rainproof ring can provide protection and prevent the first connector 50 from breaking due to wear, which would cause the entire anti-vortex device 100 to fail.

[0068] In some embodiments, the anti-vortex device 100 further includes a plurality of connecting straps 60 for connecting two adjacent first strap assemblies 10, thereby improving the stability of the first strap assembly 10 during installation.

[0069] In some embodiments, the anti-vortex device 100 further includes a plurality of second turbulence blocks 70, with at least one second turbulence block 70 installed on each connecting strip 60.

[0070] In a preferred embodiment, the second baffle 70 is arranged along the extension direction of the fan blade 200. In other embodiments, the installation direction of the second baffle 70 can also be determined according to specific design requirements.

[0071] This embodiment, by setting multiple connecting straps 60, can improve the stability of the first strap assembly 10 during installation and facilitate the installation of the second turbulence block 70. The second turbulence block 70 causes continuous disturbance to the external dimensions of the wind turbine blade 200, disrupting the continuous energy injection along the blade span, thereby further improving the anti-vortex effect.

[0072] In a preferred embodiment, two adjacent first strap assemblies 10 are connected by at least two connecting straps 60, at least one connecting strap 60 being arranged at the leading edge of the fan blade 200 and at least one connecting strap 60 being arranged at the trailing edge of the fan blade 200. At least one second deflector 70 is mounted on each connecting strap 60. The second deflector 70 arranged at the leading edge of the fan blade 200 and the second deflector 70 arranged at the trailing edge of the fan blade 200 are respectively located on the suction side and the pressure side of the fan blade 200.

[0073] In some embodiments, the connecting strap 60 may be an elastic binding strap, arranged along the extending direction of the wind turbine blade 200. In some embodiments, between two adjacent first binding strap assemblies 10, the same number of second deflector blocks 70 are arranged at both the leading and trailing edges of the wind turbine blade 200. For example, if two second deflector blocks 70 are arranged at the leading edge of the wind turbine blade 200, then two second deflector blocks 70 are arranged at the trailing edge of the wind turbine blade 200. The second deflector blocks 70 have the same structure as the first deflector blocks 20, only their arrangement direction is different. The first deflector blocks 20 are arranged at an angle, while the second deflector blocks 70 are arranged along the extending direction of the wind turbine blade 200. In other embodiments, the arrangement direction of the second deflector blocks 70 and the first deflector blocks 20 may also be set to be the same, depending on the design requirements.

[0074] In a preferred embodiment, the second turbulence block 70, arranged in phase at the leading edge of the fan blade 200, is located on the pressure side of the fan blade 200, while the second turbulence block 70 arranged at the trailing edge of the fan blade 200 is located on the suction side of the fan blade 200. Alternatively, the second turbulence block 70 arranged in phase at the leading edge of the fan blade 200 is located on the suction side of the fan blade 200, while the second turbulence block 70 arranged at the trailing edge of the fan blade 200 is located on the pressure side of the fan blade 200. This embodiment not only employs a helical arrangement for the first turbulence block 20 but also for the second turbulence block 70, which can prevent the fan blade 200 from generating in-phase vortex-induced forces and avoid vibration excitation.

[0075] In this embodiment, both the first turbulence block 20 and the second turbulence block 70 are installed on the fan blade 200. By changing the chord length of the fan blade 200, the vortex shedding frequency of the fan blade 200 section can be changed, thereby affecting the injection of vortex vibration energy and improving the anti-vortex excitation effect.

[0076] In some embodiments, the anti-vortex device 100 further includes a second connector 40, which connects all the second strap assemblies 30. One end of the second connector 40 is connected to the first strap assembly 10 at the tail of the blade tip region, and the other end is connected to the root of the wind turbine blade 200. The second connector 40 connects to the last first strap assembly 10 in the blade tip region, that is, the end position of the first strap assembly 10 in the blade tip region, which can play a role in preventing it from falling.

[0077] In some embodiments, the second connector 40 is also a rope, serving a fixing function. One end of the second connector 40 is connected to the rain guard ring at the blade root, on which a first abrasion-resistant element is installed. The second connector 40, passing through the first abrasion-resistant element, is covered by a second abrasion-resistant element. The first connector 50 can be considered as the main rope, and the second connector 40 as the fixing rope. The second connector 40 connects to the last first strap assembly 10 in the blade tip region, that is, the end position of the first strap assembly 10 in the blade tip region, which can serve as a fall prevention function. The main rope passes through each strap assembly and is used to disassemble the entire anti-vortex device 100.

[0078] Figure 9 is a schematic flowchart of the installation method of the anti-vortex device 100 for wind turbine blades 200 according to an embodiment of the present invention. As shown in Figure 9, in a specific embodiment, the installation method of the anti-vortex device 100 for wind turbine blades 200 includes the following steps:

[0079] Step S100: Set multiple first strap assemblies 10 and arrange the multiple first strap assemblies 10 sequentially in the tip area of ​​the fan blade 200 along the extension direction of the fan blade 200.

[0080] Step S200: Set multiple first aerodynamic blocks 20 and install the first aerodynamic block 20 on each first strap assembly 10;

[0081] Step S300: Set multiple second strapping assemblies 30 and arrange the multiple second strapping assemblies 30 at intervals along the extension direction of the fan blade 200 in the target area, which is the area between the blade tip area and the blade root of the fan blade 200.

[0082] Step S400: Set at least one first connector 50, use the first connector 50 to connect all the first strap assemblies 10 and all the second strap assemblies 30, and connect one end of the first connector 50 to the root of the fan blade 200.

[0083] This embodiment adds multiple second strap assemblies 30 and connects them using first connectors 50. This is equivalent to fixing the first connectors 50 located in the target area to the wind turbine blades 200 via the second strap assemblies 30. On the one hand, this can prevent the first connectors 50 in the target area from impacting the wind turbine blades 200 and causing abnormal noise when the wind turbine blades 200 are running. On the other hand, by fixing the first connectors 50 with the second strap assemblies 30, the stability of the connection of the first strap assemblies 10 can be improved, thereby improving the stability of the installation of the first turbulence block 20 and ensuring the anti-vortex effect.

[0084] In step S100, after setting multiple first strapping assemblies 10, the multiple first strapping assemblies 10 are numbered, and then arranged sequentially in the tip region of the wind turbine blade 200 according to their numbers. Here, because the chord length of the tip region varies, and the first strapping assemblies 10 are wrapped around the blade, the length of the corresponding first strapping assembly 10 can be set according to the chord length of the tip region. Then, the first strapping assemblies 10 of different lengths are numbered and arranged sequentially in the corresponding positions of the tip region. This allows for the installation of first strapping assemblies 10 of appropriate length at different positions in the tip region, improving the stability of the installation of the first strapping assemblies 10.

[0085] In some embodiments, the first strap assembly 10 includes a leading edge protection block 13, a trailing edge protection block 12, and at least one first strap 11, with both the leading edge protection block 13 and the trailing edge protection block 12 mounted on the first strap 11. The leading edge protection block 13 is mounted on the leading edge of the wind turbine blade 200, and the trailing edge protection block 12 is mounted on the trailing edge of the wind turbine blade 200.

[0086] In step S200, multiple first deflector blocks 20 are installed on each first strap assembly 10, and the multiple first deflector blocks 20 are respectively arranged on the leading edge and trailing edge of the fan blade 200. The first deflector blocks 20 are installed on the first strap 11 of the first strap assembly 10 by their own straps. The first deflector blocks 20 are installed on the leading edge and trailing edge of the fan blade 200 respectively, and the corresponding first deflector blocks 20 extend out of the leading edge and trailing edge of the fan blade 200. In a preferred embodiment, the multiple first deflector blocks 20 are respectively arranged obliquely on the leading edge and trailing edge of the fan blade 200. That is, the angle between the first deflector blocks 20 and the fan blade 200 is an acute angle. In other embodiments, the first deflector blocks 20 can also be arranged perpendicular to the fan blade 200 or parallel to the fan blade 200, depending on the design requirements.

[0087] In a preferred embodiment, a plurality of first turbulence blocks 20 are evenly arranged on the leading and trailing edges of the fan blades 200.

[0088] In some embodiments, two first deflector blocks 20 are mounted on each first strap assembly 10. One first deflector block 20 is obliquely mounted on the leading edge of the fan blade 200 and extends beyond the fan blade 200, and the other first deflector block 20 is obliquely mounted on the trailing edge of the fan blade 200 and extends beyond the fan blade 200. Preferably, the first deflector blocks 20 at the leading and trailing edges of the fan blade 200 are arranged symmetrically along the longitudinal axis of the fan blade 200 and have the same included angle with the fan blade 200.

[0089] In some embodiments, the tilt angle between the first baffle 20 and the fan blade 200 is any value ranging from 10° to 80°. For example, it can be 10°, 20°, 30°, 40°, 50°, 60°, 70°, or 80°. The tilt direction of the first baffle 20 located at the leading edge of the fan blade 200 and the first baffle 20 located at the trailing edge of the fan blade 200 is the same, that is, both are tilted towards the tip of the fan blade 200 or both are tilted towards the root of the fan blade 200.

[0090] In step S300, when installing the second strap assembly 30, the length of the second strap assembly 30 can be set according to the chord length of the target area. Then, the second strap assemblies 30 of different lengths are numbered and arranged sequentially at corresponding positions in the target area. This allows for the installation of appropriate length second strap assemblies 30 at different positions in the target area, improving the stability of the second strap assembly 30 installation. The first strap assembly 10 requires the installation of a first baffle 20, while the second strap assembly 30 does not require a baffle; the purpose of this is to secure the first connector 50.

[0091] In this embodiment, multiple second binding strap assemblies 30 are additionally provided between the blade tip region and the blade root. The number of second binding strap assemblies 30 can be determined according to the length of the wind turbine blade 200, which can play a role in suppressing excessive air disturbance of the first connector 50.

[0092] In step S400, the first connector 50 is a rope that passes through the first threading hole 111 on the first strap 11 of the first strap assembly 10, thereby connecting multiple first strap assemblies 10 in series. Then, the rope sequentially passes through the first threading hole 111 on the first strap 11 of the second strap assembly 30, thereby connecting multiple first strap assemblies 10 and multiple second strap assemblies 30 in series. Here, the end of the first connector 50 is connected to the first strap 11 of the first strap assembly 10 located in the blade tip region. The tail of the first connector 50 is connected to the root of the wind turbine blade 200, thereby securing multiple first strap assemblies 10 and multiple second strap assemblies 30.

[0093] In step S400, one end of the first connector 50 is connected to the rain shield ring at the blade root. A first anti-wear component is installed on the rain shield ring, and a second anti-wear component is wrapped around the part of the first connector 50 that passes through the first anti-wear component. Here, the first anti-wear component can be a cornice, and the second anti-wear component can be anti-wear tape. Wrapping the anti-wear tape around the first connector 50 located at the rain shield ring can provide protection and prevent the first connector 50 from breaking due to wear, which would cause the entire anti-vortex excitation device 100 to fail.

[0094] In a preferred embodiment, on the same first strap assembly 10, the first deflector 20 arranged at the leading edge of the fan blade 200 is located on the pressure side of the fan blade 200, while the first deflector 20 arranged at the trailing edge of the fan blade 200 is located on the suction side of the fan blade 200. Alternatively, on the same first strap assembly 10, the first deflector 20 arranged at the leading edge of the fan blade 200 is located on the suction side of the fan blade 200, while the first deflector 20 arranged at the trailing edge of the fan blade 200 is located on the pressure side of the fan blade 200. This embodiment uses a helical arrangement to avoid the fan blade 200 generating in-phase vortex-induced forces, thus avoiding vibration excitation. Here, the first deflectors 20 on the same first strap assembly 10 are located in the same phase.

[0095] Figure 10 is a schematic flowchart of an installation method for an anti-vortex device 100 for a wind turbine blade 200 according to another embodiment of the present invention. As shown in Figure 10, the following steps are included after step S100:

[0096] Step S500: Set multiple connecting straps 60 and connect two adjacent first strap assemblies 10 through at least one connecting strap 60;

[0097] In step S600, multiple second baffle blocks 70 are set, and at least one second baffle block 70 is installed on each connecting strip 60. It should be noted that there is no sequential relationship between steps S500 and S200; that is, the connecting strip 60 can be installed first, or the first baffle block 20 can be installed first.

[0098] This embodiment, by setting multiple connecting straps 60, can improve the stability of the first strap assembly 10 during installation and facilitate the installation of the second turbulence block 70. The second turbulence block 70 causes continuous disturbance to the external dimensions of the wind turbine blade 200, disrupting the continuous energy injection along the blade span, thereby further improving the anti-vortex effect.

[0099] In a preferred embodiment, the second turbulence block 70 is arranged along the extension direction of the fan blade 200.

[0100] Figure 11 is a schematic flowchart of the installation method of the anti-vortex device 100 for the wind turbine blade 200 according to another embodiment of the present invention. As shown in Figure 11, after step S300, the method further includes:

[0101] In step S700, the second connector 40 is installed, and all the second strap assemblies 30 are connected using the second connector 40. One end of the second connector 40 is connected to the first strap assembly 10 at the tail of the blade tip region, and the other end is connected to the root of the fan blade 200. It should be noted that steps S700 and S400 are not sequential; the first connector 50 can be installed first, or the second connector 40 can be installed first.

[0102] After the wind turbine blade 200 is hoisted, this embodiment ensures the reliability of the anti-vortex-induced shock device 100's long-term fixation on the wind turbine blade 200 through the above installation method. It guarantees the integrity of the anti-vortex-induced shock device 100 in extreme outdoor environments, preventing it from being blown off or moved. The above installation method can be used in various scenarios, including storage, transportation, hoisting, and before grid connection of the wind turbine blade 200.

[0103] When disassembling the anti-vortex device 100, the wind turbine blades 200 to be disassembled are rotated to the designated disassembly position. For serrated trailing edge blades, the serrations need to be adjusted to the designated disassembly angle. One person needs to loosen the first connector 50 and the second connector 40 from the rain guard ring in sequence, releasing the first connector 50 and the second connector 40 respectively. The first connector 50 will fall to the ground. The ground personnel stand according to the disassembly angle requirements and pull the first connector 50 from the ground, applying external force to pull and cause the Velcro of each first strap 11 to separate, so that the first strap assembly 10 and the second strap assembly 30 are detached from the wind turbine blades 200. Thus, the entire anti-vortex device 100 can be disassembled by applying force only to the first connector 50, which is relatively convenient.

[0104] Therefore, those skilled in the art should recognize that although numerous exemplary embodiments of the present invention have been shown and described in detail herein, many other variations or modifications conforming to the principles of the present invention can be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Thus, the scope of the present invention should be understood and construed as covering all such other variations or modifications.

Claims

1. A method of installing a vortex shedding resistant device on a wind turbine blade, characterised in that, Includes the following steps: Multiple first binding strap assemblies are provided, and the multiple first binding strap assemblies are arranged sequentially along the extension direction of the wind turbine blade in the tip region of the wind turbine blade. Multiple first aerodynamic blocks are provided, and the first aerodynamic blocks are installed on each of the first strap assemblies; Multiple second binding strap assemblies are provided and the multiple second binding strap assemblies are arranged at intervals along the extension direction of the wind turbine blade in the target area, the target area being the area between the blade tip area and the blade root of the wind turbine blade; At least one first connector is provided, which is used to connect all the first strap assemblies and all the second strap assemblies, and one end of the first connector is connected to the root of the wind turbine blade.

2. The mounting method according to claim 1, characterized in that, In the step of setting up multiple first baffles and installing the first baffles on each of the first strap assemblies, multiple first baffles are installed on each of the first strap assemblies, and the multiple first baffles are respectively arranged at the leading edge and trailing edge of the wind turbine blade.

3. The mounting method according to claim 1, characterized in that, The step of setting up multiple first binding strap assemblies and sequentially arranging the multiple first binding strap assemblies along the extension direction of the wind turbine blade in the tip region of the wind turbine blade, is followed by the following steps: Multiple connecting straps are provided, and two adjacent first strap components are connected by at least one connecting strap; Multiple second baffles are provided, and at least one second baffle is installed on each of the connecting strips.

4. The mounting method according to claim 3, characterized in that In the step of setting multiple connecting straps and connecting two adjacent first strap assemblies by at least one connecting strap, the two adjacent first strap assemblies are connected by multiple connecting straps, at least one connecting strap is arranged on the leading edge of the wind turbine blade, and at least one connecting strap is arranged on the trailing edge of the wind turbine blade.

5. The mounting method according to claim 1, characterized by The step of setting up multiple second strap assemblies and arranging the multiple second strap assemblies at intervals along the extension direction of the wind turbine blades in the target area further includes: A second connector is provided, and all the second strap assemblies are connected using the second connector. One end of the second connector is connected to the first strap assembly at the tail of the blade tip region, and the other end is connected to the root of the wind turbine blade.

6. The mounting method according to claim 1, characterized by In the step of setting at least one first connector, connecting all the first strap assemblies and all the second strap assemblies using the first connector, and connecting one end of the first connector to the root of the wind turbine blade, one end of the first connector is connected to the rain guard ring at the root of the blade, the rain guard ring is equipped with a first anti-wear component, and the position where the first connector passes through the first anti-wear component is covered by a second anti-wear component.

7. The installation method according to claim 5, characterized in that, Both the first strap assembly and the second strap assembly include a leading edge protection block, a trailing edge protection block, and at least one first strap, wherein the leading edge protection block and the trailing edge protection block are both mounted on the first strap.

8. Anti-vortex device for a wind turbine blade, applying the mounting method according to any one of claims 1 to 7, characterized in that, It includes at least one group of tilted spoilers, each group of tilted spoilers comprising: A first strap assembly includes at least one first strap and a leading edge protection block and a trailing edge protection block mounted on the first strap. The first strap is sleeved on a wind turbine blade, the leading edge protection block is located at the leading edge of the wind turbine blade, and the trailing edge protection block is located at the trailing edge of the wind turbine blade. Multiple first baffles are installed on the first strap, and the multiple first baffles are respectively arranged at the leading edge and trailing edge of the wind turbine blade, and extend out of the leading edge and trailing edge of the wind turbine blade.

9. The anti-vortex-induced device according to claim 8, characterized in that, All of the first turbulence blocks are arranged at an angle toward either the tip of the wind turbine blade or the root of the wind turbine blade.

10. The anti-vortex device according to claim 8, characterized in that, The tilt angle between the first turbulence block and the fan blade is any value between 10° and 80°.

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