Composite deicing device of wind power blade and wind generating set

Abstract

The invention discloses a composite deicing device of a wind power blade and a wind generating set, and relates to the technical field of wind power generation, the composite deicing device of the wind power blade is applied to the wind generating set, and the wind generating set comprises a plurality of blade structures. The composite deicing device of the wind power blade comprises a photo-thermal material coating, an adjustable condensation assembly and a mechanical vibration assembly. The surface of a blade structure is coated with the photo-thermal material coating. The adjustable light condensation assembly is used for adjusting the light condensation direction and emitting a condensed light beam to the photo-thermal material coating; the mechanical vibration assembly is arranged on the blade structure and electrically connected with an external control switch. According to the invention, photo-thermal is generated through the photo-thermal material coating, and light energy is accurately transmitted to the photo-thermal material coating by using the adjustable light condensation assembly, so that the photo-thermal ice melting efficiency is improved; and in cooperation with the vibration deicing effect of the mechanical vibration assembly, the effects of softening an ice layer through light and heat and shaking off molten water through vibration are achieved, and therefore the safe, energy-saving, efficient and reliable deicing requirements are met.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation, and in particular to a composite deicing device for wind turbine blades and a wind turbine generator set. Background Art

[0002] Wind power, as an important renewable clean energy technology, has seen large-scale global application and development in recent years. Early development of wind power technology focused on optimizing blade design to improve aerodynamic efficiency and refining the drive system to enhance energy transfer efficiency. With the expansion of the wind power market, the geographical environments for wind turbine deployment have become increasingly diverse. The trend has become to construct wind farms in cold or high-altitude regions with high-quality wind resources.

[0003] Wind turbines operating in cold and humid environments face severe icing problems on their blades. Ice on the blade surface can significantly alter the designed aerodynamic profile, reducing aerodynamic performance and power generation efficiency. It can also disrupt the dynamic balance of the rotor system, exacerbating vibrations, leading to fatigue damage and even structural damage. This can also cause unplanned downtime, directly impacting the continuous and stable operation and economic benefits of wind farms.

[0004] To address this issue, the industry has explored and applied a variety of blade de-icing or anti-icing technologies, such as manual de-icing that relies on maintenance personnel using professional tools to manually scrape or knock off the ice layer, hot air de-icing by generating hot air through the HVAC system inside the wind turbine or introducing an external heat source, and electric heating de-icing by installing electric heating components inside or in specific areas of the surface of the wind turbine blades.

[0005] However, the above-mentioned traditional single deicing methods have problems such as high safety risks, high energy consumption, and low efficiency, and the deicing effect is relatively general, which makes it difficult to meet the requirements of safe, energy-saving, efficient and reliable deicing.

[0006] Therefore, there is an urgent need for a new composite deicing device for wind turbine blades to solve the problems of high safety risks, high energy consumption, low efficiency, and relatively general deicing effect of traditional single deicing methods. Summary of the Invention

[0007] The main purpose of the present invention is to propose a composite deicing device for wind turbine blades and a wind turbine generator set, aiming to solve the problems of high safety risks, high energy consumption, low efficiency and relatively general deicing effect of traditional single deicing methods.

[0008] To achieve the above-mentioned purpose, the composite de-icing device for wind turbine blades proposed in the present invention is applied to a wind turbine generator set, which includes multiple blade structures. The composite de-icing device for wind turbine blades includes a photothermal material coating, an adjustable focusing component and a mechanical vibration component. The photothermal material coating is coated on the surface of the blade structure; the adjustable focusing component is used to adjust the focusing direction and direct the focused light beam toward the photothermal material coating; the mechanical vibration component is arranged on the blade structure, and the mechanical vibration component is electrically connected to an external control switch.

[0009] In one embodiment, the adjustable focusing assembly includes a lens, a reflector, and a support structure. The lens is rotatably connected to the support structure, the reflector is movably connected to the support structure, and the reflector is further rotatably connected to the support structure.

[0010] In one embodiment, the wind turbine generator set further comprises a tower, and the support structure is rotatably connected to the tower, so that the support structure can be rotated to a surface close to the tower, or rotated to be deployed relative to the tower surface.

[0011] In one embodiment, the supporting structure is configured as a multi-section telescopic mechanism, wherein two adjacent sections of the telescopic mechanism are socketed with each other, one end of the outermost section of the telescopic mechanism is rotatably connected to the tower, and the innermost section of the telescopic mechanism is provided with a lens and a reflector; and / or, the adjustable focusing assembly is also arranged on the ground; and / or, the external control switch is arranged at the bottom of the tower.

[0012] In one embodiment, the composite de-icing device for wind turbine blades further includes a sensing component and a control module, wherein the sensing component includes at least a de-icing monitoring module and a light sensor, and the de-icing monitoring module and the light sensor are both communicatively connected to the control module; the adjustable focusing component further includes a driving device, which is respectively connected to the lens and the reflector for transmission, and the driving device is communicatively connected to the control module; the control module is configured to control the driving device to adjust the orientation of the lens and the position and orientation of the reflector based on the data from the light sensor when the de-icing monitoring module detects that the blade structure is frozen, so as to form a focused light beam and direct the focused light beam toward the photothermal material coating.

[0013] In one embodiment, the reflector is configured as a flexible reflective panel, the four edges of the flexible reflective panel are movably connected to the supporting structure, and the four edges of the flexible reflective panel are also rotatably connected to the supporting structure; the driving device is transmission-connected to the flexible reflective panel, and the driving device is communicatively connected to the control module; the control module is also used to control the driving device to adjust the curvature of the flexible reflective panel based on data from the light sensor.

[0014] In one embodiment, the mechanical vibration component is in communication with the control module; the control module is further configured to activate the mechanical vibration component when the de-icing monitoring module detects ice formation on the blade structure.

[0015] In one embodiment, the composite deicing device for a wind turbine blade further includes a heating component, which is disposed on the blade structure and electrically connected to an external control switch; the heating component is also communicatively connected to a control module; and the control module is further configured to start the heating component when the deicing monitoring module detects that the blade structure is frozen.

[0016] In one embodiment, the surface of the photothermal material coating is coated with a super-hydrophobic coating, and the super-hydrophobic coating has light transmission capability.

[0017] The present invention also provides a wind turbine generator set, comprising a plurality of blade structures and the composite deicing device for wind turbine blades.

[0018] The composite de-icing device for wind turbine blades of the present invention achieves a safe, energy-saving, efficient and reliable de-icing effect by integrating the synergistic effects of a photothermal material coating, an adjustable focusing component and a mechanical vibration component. Specifically, by coating the surface of the blade structure with a photothermal material coating, the coating can directly absorb the concentrated light beam incident from the adjustable focusing component and efficiently convert the light energy into heat energy, thereby quickly melting the ice layer on the surface of the blade structure. Compared with traditional hot air or electric heating de-icing methods, photothermal de-icing not only reduces energy consumption requirements, but also avoids the safety risks of manual de-icing. At the same time, the adjustable focusing component has the ability to adjust the focusing direction, and can dynamically adjust the light beam direction according to the position of the blade structure and changes in sunlight, ensuring that the photothermal energy accurately covers the target area of ​​the blade structure, improving the efficiency of heat energy utilization, and reducing energy waste. In addition, the mechanical vibration component is set on the blade structure and electrically connected through an external control switch. It can remotely start vibration after the ice layer is melted by solar thermal energy. It can generate high-frequency mechanical force to break and peel off the residual ice layer, thereby eliminating the changes in the aerodynamic shape of the blade caused by the ice layer and restoring the operating efficiency of the wind turbine. It can also shake off the melted ice water from the surface of the blade structure through high-frequency vibration; its cooperation with solar thermal de-icing forms a synergistic mechanism of softening and breaking, which significantly improves the de-icing efficiency.

[0019] Overall, this technical solution uses an adjustable focusing component to accurately transmit light energy to the photothermal material coating, thereby improving the efficiency of photothermal ice melting; combined with the vibration de-icing effect of the mechanical vibration component, it achieves the effect of photothermal softening of the ice layer and vibration shaking off the melted water, thereby meeting the needs of safe, energy-saving, efficient and reliable de-icing. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0021] Figure 1 A schematic structural diagram of an embodiment of a composite deicing device for wind turbine blades provided by the present invention;

[0022] Figure 2 Another structural schematic diagram of an embodiment of the composite deicing device for wind turbine blades provided by the present invention;

[0023] Figure 3 This is a module schematic diagram of an embodiment of a composite deicing device for wind turbine blades provided by the present invention.

[0024] Description of Figure Numbers:

[0025] 1. Composite deicing device for wind turbine blades; 11. Adjustable focusing assembly; 111. Lens; 112. Reflector; 113. Support structure; 113a. Telescopic mechanism; 12. Mechanical vibration assembly;

[0026] 2. Wind turbine generator set; 21. Blade structure; 22. Tower;

[0027] 3. External control switch.

[0028] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] Wind power, as an important renewable clean energy technology, has seen large-scale global application and development in recent years. Early development of wind power technology focused on optimizing blade design to improve aerodynamic efficiency and refining the drive system to enhance energy transfer efficiency. With the expansion of the wind power market, the geographical environments for wind turbine deployment have become increasingly diverse. The trend has become to construct wind farms in cold or high-altitude regions with high-quality wind resources.

[0033] Wind turbines operating in cold and humid environments face severe icing problems on their blades. Ice on the blade surface can significantly alter the designed aerodynamic profile, reducing aerodynamic performance and power generation efficiency. It can also disrupt the dynamic balance of the rotor system, exacerbating vibrations, leading to fatigue damage and even structural damage. This can also cause unplanned downtime, directly impacting the continuous and stable operation and economic benefits of wind farms.

[0034] To address this issue, the industry has explored and applied a variety of blade de-icing or anti-icing technologies, such as manual de-icing that relies on maintenance personnel using professional tools to manually scrape or knock off the ice layer, hot air de-icing by generating hot air through the HVAC system inside the wind turbine or introducing an external heat source, and electric heating de-icing by installing electric heating components inside or in specific areas of the surface of the wind turbine blades.

[0035] However, the above-mentioned traditional single deicing methods have problems such as high safety risks, high energy consumption, and low efficiency, and the deicing effect is relatively general, which makes it difficult to meet the requirements of safe, energy-saving, efficient and reliable deicing.

[0036] Therefore, there is an urgent need for a new composite deicing device for wind turbine blades to solve the problems of high safety risks, high energy consumption, low efficiency, and relatively general deicing effect of traditional single deicing methods.

[0037] In order to solve the above problems, the present invention proposes a composite deicing device for wind turbine blades.

[0038] See also Figure 1 and Figure 2 In one embodiment of the present invention, the composite de-icing device 1 for wind turbine blades is applied to a wind turbine generator set 2, which includes multiple blade structures 21. The composite de-icing device 1 for wind turbine blades includes a photothermal material coating, an adjustable focusing component 11 and a mechanical vibration component 12. The photothermal material coating is coated on the surface of the blade structure 21; the adjustable focusing component 11 is used to adjust the focusing direction and direct the focused light beam toward the photothermal material coating; the mechanical vibration component 12 is arranged on the blade structure 21, and the mechanical vibration component 12 is electrically connected to the external control switch 3.

[0039] The composite deicing device for wind turbine blades of the present invention achieves a safe, energy-saving, efficient and reliable deicing effect by integrating the synergistic effect of a photothermal material coating, an adjustable focusing component 11 and a mechanical vibration component 12. Specifically, by coating the surface of the blade structure 21 with a photothermal material coating, the coating can directly absorb the concentrated light beam incident from the adjustable focusing component 11 and efficiently convert the light energy into heat energy, thereby quickly melting the ice layer on the surface of the blade structure 21. Compared with traditional hot air or electric heating deicing methods, photothermal deicing not only reduces energy consumption requirements, but also avoids the safety risks of manual deicing. At the same time, the adjustable focusing component 11 has the ability to adjust the focusing direction, and can dynamically adjust the light beam direction according to the position of the blade structure 21 and changes in sunlight, ensuring that the photothermal energy accurately covers the target area of ​​the blade structure 21, improving the efficiency of heat energy utilization and reducing energy waste. In addition, the mechanical vibration component 12 is arranged on the blade structure 21 and is electrically connected through the external control switch 3. It can remotely start vibration after the ice layer is melted by photothermal energy. It can generate high-frequency mechanical force to break and peel off the residual ice layer, thereby eliminating the changes in the aerodynamic shape of the blade caused by the ice layer and restoring the operating efficiency of the wind turbine generator set 2. It can also shake off the melted ice water from the surface of the blade structure 21 through high-frequency vibration; its cooperation with photothermal deicing forms a synergistic mechanism of softening and breaking, which significantly improves the deicing efficiency.

[0040] Overall, this technical solution accurately transmits light energy to the photothermal material coating through the adjustable focusing component 11, thereby improving the efficiency of photothermal ice melting; combined with the vibration de-icing effect of the mechanical vibration component 12, it achieves the effect of photothermal softening of the ice layer and vibration shaking off the melted water, thereby meeting the needs of safe, energy-saving, efficient and reliable de-icing.

[0041] It should be noted that the photothermal material coating is made of photothermal materials. The photothermal materials can be polymer photothermal materials such as polypyrrole, polyaniline, polydopamine, etc. Among them, polypyrrole has a high absorption rate for light in the ultraviolet to near-infrared frequency band and a high photothermal conversion efficiency, and is suitable for use as a material for the photothermal material coating.

[0042] It should also be noted that the photothermal material coating can generate heat through photothermal conversion under normal lighting conditions, and does not require the irradiation of the adjustable focusing component 11. When the lighting conditions are relatively weak, the adjustable focusing component 11 can be used to irradiate the photothermal material coating with a focused light beam, thereby further improving the photothermal deicing effect. The mechanical vibration component 12 can be activated depending on the specific icing conditions and deicing needs. For example, when the lighting conditions are very weak, such as in cloudy weather or at night, the photothermal deicing efficiency is low, and the mechanical vibration component 12 can be activated for deicing. For example, when the icing situation is more serious and rapid deicing is required to improve the deicing efficiency, photothermal deicing and mechanical vibration deicing can be performed simultaneously to achieve a fast and efficient deicing effect.

[0043] In addition, the mechanical vibration component 12 can use a vibration generator such as a piezoelectric vibrator, an electromagnetic vibrator, etc., and by burying such a mechanical vibration component 12 inside the blade structure 21 or setting it on the outer surface of the blade structure 21, the blade structure 21 is caused to vibrate, thereby shattering the ice layer on the surface of the blade structure 21 and shaking off the ice water melted by light and heat.

[0044] See also Figure 1 and Figure 2 In an embodiment of the present invention, the adjustable focusing assembly 11 includes a lens 111, a reflector 112 and a support structure 113. The lens 111 is rotatably connected to the support structure 113, the reflector 112 is movably connected to the support structure 113, and the reflector 112 is also rotatably connected to the support structure 113.

[0045] In this embodiment, the adjustable focusing assembly 11 achieves dynamic and fine adjustment of the light beam path through the coordinated design of a support structure 113, a rotatably connected lens 111, and a movable and rotatable reflector 112. Specifically, the rotatable connection between the lens 111 and the support structure 113 allows adjustment of the incident angle of the light, compensating for deviations in the light source angle caused by the rotation of the blade structure 21 and changes in the direction of illumination. The reflector 112 has both translational and rotational degrees of freedom, dynamically changing the direction and focal length of the reflected light, so that the concentrated light beam accurately covers the photothermal material coating in specific areas of the blade. This dual-degree-of-freedom adjustment mechanism not only effectively overcomes light path interference caused by changes in blade posture and sunlight offset, but also optimizes the spot position and energy density in real time based on the distribution of the ice layer. In addition, the support structure 113 provides a stable reference for the lens 111 and reflector 112, ensuring structural stability during the adjustment process and avoiding attenuation of focusing performance due to vibration. The overall design of this embodiment significantly improves the efficiency of light energy utilization and ice melting accuracy.

[0046] Among them, the lens 111 and the support structure 113 can be rotatably connected in a variety of ways. As an optional embodiment, the lens 111 is rotatably connected to the support structure 113 through a rotating shaft. As another optional embodiment, the lens 111 can be rotatably connected to the support structure 113 through a structure such as a universal joint. These will not be described in detail here.

[0047] In addition, the reflector 112 and the support structure 113 can be movably connected in various ways. For example, a slide rail can be provided between the support structure 113 and the reflector 112, and a sliding member can be slidably provided on the slide rail. The sliding member is rotatably connected to the reflector 112, thereby achieving relative sliding between the support structure 113 and the reflector 112. The sliding member can be provided as a sliding component such as a slider, and the sliding member can be provided with a rotating connection member such as a rotating shaft or a rotating joint to achieve rotational connection between the sliding member and the reflector 112, thereby achieving relative rotation of the reflector 112 relative to the support structure 113.

[0048] See also Figure 1 and Figure 2 In an embodiment of the present invention, the wind turbine generator set 2 further includes a tower 22, and the support structure 113 is rotatably connected to the tower 22 so that the support structure 113 can be rotated to a surface close to the tower 22, or rotated to be unfolded relative to the surface of the tower 22.

[0049] In this embodiment, the support structure 113 is rotatably connected to the tower 22, thereby optimizing the maintainability and adaptability of the adjustable focusing assembly 11 to harsh environments. Specifically, by allowing the support structure 113 to rotate to a stowed position close to the surface of the tower 22, the adjustable focusing assembly 11 is significantly reduced in wind exposure and the risk of icing in extreme weather conditions such as strong winds, ice, and snow, thereby preventing structural deformation or damage to the optical components caused by external loads. Furthermore, this stowed position facilitates access to the support structure 113 for maintenance by operators using a ladder or lifting equipment on the tower 22, thus avoiding the risks of high-altitude operations. When focusing is required, the support structure 113 can be rotated to an extended working position relative to the surface of the tower 22. The extended angle can be flexibly adjusted based on the direction of sunlight and the position of the blades, ensuring an unobstructed beam path for the focusing assembly and maximizing the efficiency of photothermal conversion. This retractable and compact design not only ensures the deicing system's all-weather reliability and adaptability to harsh environments, but also achieves a dynamic balance between operational safety, space efficiency, and optical performance.

[0050] As an optional embodiment, a hinge structure is provided between the support structure 113 and the tower 22, and the support structure 113 is connected to the tower 22 via the hinge structure. Of course, the support structure 113 can also be rotatably connected to the tower 22 in other ways, which will not be described in detail here. The support structure 113 can also be provided with a connecting and fixing device, such as a locking device, a snap connection mechanism, etc., so that when the support structure 113 is rotated to a storage state close to the surface of the tower 22, the connecting and fixing device is used to achieve relative fixation between the support structure 113 and the tower 22, preventing the support structure 113 from loosening; when it is necessary to rotate and unfold the support structure 113, the connecting and fixing device is released.

[0051] See also Figure 1 and Figure 2 In an embodiment of the present invention, the support structure 113 is configured as a multi-section telescopic mechanism 113a, and two adjacent telescopic mechanisms 113a are connected to each other. One end of the telescopic mechanism 113a located on the outermost side is rotatably connected to the tower 22, and the telescopic mechanism 113a located on the innermost side is provided with a lens 111 and a reflector 112; and / or, the adjustable focusing assembly 11 is also arranged on the ground; and / or, the external control switch 3 is arranged at the bottom of the tower 22.

[0052] In this embodiment, the multi-section telescopic mechanism 113a of the support structure 113 significantly enhances the spatial adaptability and operating compatibility of the de-icing system. Specifically, the multi-section telescopic mechanism 113a, which is nested together, can be retracted into a compact configuration to reduce structural loads in strong winds, or extended to various lengths by varying its overall length. Combined with the pivoting connection between the outermost telescopic mechanism 113a and the tower 22, this precisely matches the position of the blade structure 21, ensuring that the adjustable focusing assembly 11's light beam covers the photothermal coating of the blade structure 21. The lens 111 and reflector 112 on the innermost telescopic mechanism 113a move synchronously with the telescopic movement, maintaining the relative positioning accuracy of the optical components and the coating, and preventing focus misalignment caused by telescopic movement. The multi-section telescopic mechanism 113a's pivoting connection to the tower 22 allows the adjustable focusing assembly 11 to be positioned as close to the tower 22 as possible when retracted, minimizing its exposed surface area and improving its adaptability to inclement weather. Furthermore, the adjustable focusing assembly 11 can also be installed on the ground. By installing the adjustable focusing assembly 11 on the tower 22 and on the ground, the light intensity irradiated on the photothermal material coating can be increased, thereby enhancing the photothermal deicing effect. Furthermore, by installing an external control switch 3 at the bottom of the tower 22, the operator can remotely start and stop the system from a safe position at the bottom of the tower 22 without climbing, further eliminating the risks of working at height.

[0053] See also Figure 1 、 Figure 2 and Figure 3In an embodiment of the present invention, the composite de-icing device 1 for a wind turbine blade further includes a sensing component and a control module. The sensing component includes at least a de-icing monitoring module and a light sensor. The de-icing monitoring module and the light sensor are both communicatively connected to the control module. The adjustable focusing component 11 further includes a driving device, which is respectively transmission-connected to the lens 111 and the reflector 112, and the driving device is communicatively connected to the control module. The control module is configured to control the driving device to adjust the orientation of the lens 111 and the position and orientation of the reflector 112 based on data from the light sensor when the de-icing monitoring module detects that the blade structure 21 is iced, so as to form a focused light beam and direct the focused light beam toward the photothermal material coating.

[0054] In this embodiment, the intelligent coordination of the sensing components, control module, and drive device significantly improves the adaptive accuracy and energy efficiency of the composite de-icing device. Specifically, when the de-icing monitoring module detects ice formation on the blade structure 21, the control module, based on the real-time light intensity and angle data collected by the light sensor, coordinates with the drive device to dynamically adjust the rotational orientation of the lens 111 and the spatial position of the reflector 112. Through dual-degree-of-freedom coordinated calibration, the concentrated light beam is continuously and accurately projected onto the iced area of ​​the photothermal coating, thus achieving an intelligent automatic focusing and reflection effect.

[0055] Wherein, the driving device may include a plurality of driving units, and different driving units may be respectively connected to the lens 111 and the reflector 112 in transmission mode to realize classified drive control. The driving unit may be set to a servo motor, and the driving unit may be connected to the lens 111 in transmission mode through transmission members such as gears and transmission belts, thereby controlling the lens 111 to rotate. Similarly, the driving unit may be connected to the reflector 112 in transmission mode through transmission members such as gears and transmission belts, thereby controlling the reflector 112 to rotate. In addition, continuing to use the solution in which the reflector 112 in the above-mentioned embodiment is slidably arranged on the slide rail by a sliding member, the driving unit may also be connected to the slide by a screw nut transmission mode, thereby driving the slide and the reflector 112 connected thereto to move along the slide rail. Of course, other transmission modes may also be adopted, which will not be described in detail here.

[0056] See also Figure 1 、 Figure 2 and Figure 3 In an embodiment of the present invention, the reflector 112 is configured as a flexible reflective panel, the four edges of the flexible reflective panel are movably connected to the support structure 113, and the four edges of the flexible reflective panel are also rotatably connected to the support structure 113; the driving device is transmission-connected to the flexible reflective panel, and the driving device is communicatively connected to the control module; the control module is further used to control the driving device to adjust the curvature of the flexible reflective panel based on data from the light sensor.

[0057] In this embodiment, by configuring reflector 112 as a flexible reflective panel and employing a dynamic curvature adjustment method, the focus range, light intensity, and illumination direction of the focused light beam can be effectively adjusted. Specifically, based on real-time solar angle and intensity data fed back by the illumination sensor, the control module controls the driving device to precisely adjust the local curvature of the flexible reflective panel, achieving a certain self-focusing effect and refocusing the focused light beam projected by lens 111. Furthermore, the local curvature of the flexible reflective panel can be adjusted to change the reflection direction of the focused light beam, achieving precise illumination of iced areas on the photothermal material coating.

[0058] The drive device can control the curvature of the flexible reflective panel via a separate drive unit, which can be independent of the drive unit that controls the rotation of the lens 111 and the movement and rotation of the reflector. The drive unit can be connected to the flexible surface of the flexible reflective panel via multiple drive rods, thereby adjusting the local or global curvature of the flexible reflective panel by driving different drive rods, thereby achieving focus and reflection adjustment of the focused light beam.

[0059] See also Figure 2 and Figure 3 In an embodiment of the present invention, the mechanical vibration component 12 is in communication with the control module; the control module is further configured to activate the mechanical vibration component 12 when the de-icing monitoring module detects ice on the blade structure 21 .

[0060] In this embodiment, the intelligent linkage mechanism between the mechanical vibration assembly 12 and the control module achieves precise coordinated control and efficient energy utilization during the de-icing process. Specifically, when the de-icing monitoring module detects ice formation on the blade structure 21, the control module synchronously triggers the mechanical vibration assembly 12 and the adjustable focusing assembly 11. After the photothermal coating absorbs the focused light beam to soften the ice, the mechanical vibration assembly 12 generates high-frequency vibrations, effectively breaking up and removing any remaining ice through physical shock waves. This sequential control monitors whether ice has formed on the blade structure 21 and activates the mechanical vibration assembly 12 only when the photothermal effect of the photothermal coating and the adjustable focusing assembly 11 alone is insufficient to de-ice the blade structure 21 (i.e., when ice is detected on the blade structure 21). This reduces the operating time of the mechanical vibration assembly 12 and reduces energy consumption. Furthermore, the integrated control architecture of automatic monitoring and automatic vibration de-icing avoids both de-icing delays caused by manual judgment errors or untimely human judgment, and the inefficient de-icing caused by relying solely on photothermal de-icing. This ensures safe and efficient operation with zero human intervention and low energy consumption throughout the de-icing process.

[0061] In addition, as an optional embodiment, the vibration parameters of the mechanical vibration component 12 can be adaptively adjusted according to the thickness of the ice layer. When a thick ice layer is detected, the control module can control the mechanical vibration component 12 to automatically increase the amplitude to increase the crushing force, and the thin ice layer is switched to a micro-amplitude high-frequency mode to reduce energy consumption. This dynamic vibration intensity response mechanism reduces the de-icing energy consumption compared to the fixed-intensity vibration scheme.

[0062] See also Figure 1 and Figure 3 In an embodiment of the present invention, the composite de-icing device 1 for a wind turbine blade further includes a heating component (not shown in the figure), which is arranged on the blade structure 21 and electrically connected to the external control switch 3; the heating component is also communicatively connected to the control module; the control module is also used to start the heating component when the de-icing monitoring module detects that the blade structure 21 is frozen.

[0063] In this embodiment, the integration of the heating assembly and intelligent control strategy further enhances the reliability and environmental adaptability of the de-icing system. Specifically, when the de-icing monitoring module detects ice formation on the blade structure 21, the control module autonomously determines when to activate the heating assembly based on real-time environmental data. During periods of sufficient sunlight, the adjustable focusing assembly 11 is prioritized for solar-thermal de-icing. The heating assembly is automatically activated only during periods of persistent rain, nighttime, or no sunlight, directly melting the ice through resistive heating to ensure continuous de-icing operations. Furthermore, the heating area precisely matches the ice location identified by the de-icing monitoring module, avoiding the energy waste associated with continuous heating of the entire blade in traditional electric heating solutions and reducing de-icing energy consumption. Furthermore, this embodiment forms a closed-loop de-icing technology through a triple synergistic mechanism of photothermal, vibration, and electric heating. In severe icing scenarios, the control module can simultaneously activate the heating component and the photothermal coating, first rapidly softening the ice core base layer with a composite heat source, and then stripping away the remaining ice through mechanical vibration. In extremely cold environments (e.g., below -30°C), the heating component can independently maintain the antifreeze temperature of key blade areas, eliminating the risk of re-icing. This intelligent strategy of on-demand matching and dynamic combination addresses the pain point of traditional solutions' lack of adaptability in complex climates, achieving long-term, safe, and efficient de-icing.

[0064] In an embodiment of the present invention, the surface of the photothermal material coating is coated with a super-hydrophobic coating, and the super-hydrophobic coating has light transmission capability.

[0065] In this embodiment, the super-hydrophobic coating added to the surface of the photothermal material coating significantly improves de-icing efficiency and system durability through dual physical effects. Specifically, the unique micro-nano composite structure of the super-hydrophobic coating enables it to impart extremely low ice adhesion strength to the surface while ensuring a high visible light transmittance, thereby significantly reducing the peeling force required to vibrate ice off the surface of the super-hydrophobic layer, significantly saving vibration energy consumption; when the ice melts to produce liquid water, the large contact angle of the super-hydrophobic coating can cause water droplets to roll off its surface, reducing the risk of secondary icing caused by meltwater retention. This embodiment, by comprehensively utilizing the light-transmitting, hydrophobic, and viscosity-reducing properties of the super-hydrophobic coating, not only maintains the photothermal conversion efficiency, but also significantly reduces the peeling force required to vibrate ice off the surface of the super-hydrophobic layer by reducing the ice adhesion strength, and can also prevent meltwater retention from causing secondary icing, thus constructing a long-lasting anti-icing barrier for the blade structure 21.

[0066] Super-hydrophobic coatings are made of low-surface-energy resins and hydrophobic nanoparticles. The low-surface-energy resins can be made of materials like fluorosilicone and fluorocarbon resins, while the hydrophobic nanoparticles can be made of materials like silicon dioxide and zinc oxide. Super-hydrophobic coatings, due to their micro-nanostructure formed by the accumulation of nanoparticles, have a large contact angle, preventing ice nucleation and reducing ice adhesion, while also providing a hydrophobic effect.

[0067] The present invention also proposes a wind turbine generator set 2, which includes multiple blade structures 21 and the above-mentioned composite de-icing device 1 for wind turbine blades. The specific structure of the composite de-icing device 1 for wind turbine blades refers to the above-mentioned embodiment. Since this wind turbine generator set 2 adopts all the technical solutions of all the above-mentioned embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above-mentioned embodiments, which will not be repeated here one by one.

[0068] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformation made by utilizing the contents of the present invention's description and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields, is included in the patent protection scope of the present invention.

Claims

1. A composite deicing device for wind turbine blades, characterized in that: Applicable to a wind turbine generator set, the wind turbine generator set includes multiple blade structures, and the composite deicing device for the wind turbine blades includes: A photothermal material coating, the photothermal material coating being coated on the surface of the blade structure; An adjustable focusing assembly, the adjustable focusing assembly being used to adjust the focusing direction and direct the focused light beam toward the photothermal material coating; A mechanical vibration component is provided on the blade structure and is electrically connected to an external control switch.

2. The composite deicing device for wind turbine blades according to claim 1, characterized in that: The adjustable focusing assembly includes a lens, a reflector and a supporting structure. The lens is rotatably connected to the supporting structure, the reflector is movably connected to the supporting structure, and the reflector is also rotatably connected to the supporting structure.

3. The composite deicing device for wind turbine blades according to claim 2, characterized in that: The wind turbine generator set further includes a tower, and the support structure is rotatably connected to the tower so that the support structure can be rotated to a surface close to the tower, or rotated to be deployed relative to the tower surface.

4. The composite deicing device for wind turbine blades according to claim 3, characterized in that: The support structure is configured as a multi-section telescopic mechanism, wherein two adjacent sections of the telescopic mechanism are sleeved with each other, one end of the telescopic mechanism located on the outermost section is rotatably connected to the tower, and the telescopic mechanism located on the innermost section is provided with the lens and the reflector; And / or, the adjustable focusing assembly is further arranged on the ground; And / or, the external control switch is arranged at the bottom of the tower.

5. The composite deicing device for wind turbine blades according to any one of claims 2 to 4, characterized in that: The composite deicing device for wind turbine blades further comprises a sensor assembly and a control module, wherein the sensor assembly comprises at least a deicing monitoring module and a light sensor, and both the deicing monitoring module and the light sensor are communicatively connected to the control module; The adjustable focusing assembly further includes a driving device, the driving device being respectively connected to the lens and the reflector in a transmission manner, and the driving device being in communication with the control module; The control module is used to control the driving device to adjust the orientation of the lens and the position and orientation of the reflector based on data from the light sensor when the de-icing monitoring module detects that the blade structure is iced, so as to form a focused light beam and direct the focused light beam toward the photothermal material coating.

6. The composite deicing device for wind turbine blades according to claim 5, characterized in that: The reflector is configured as a flexible reflective panel, the four edges of the flexible reflective panel are movably connected to the support structure, and the four edges of the flexible reflective panel are also rotatably connected to the support structure; the driving device is transmission-connected to the flexible reflective panel, and the driving device is communicatively connected to the control module; The control module is further configured to control the driving device to adjust the curvature of the flexible reflective panel based on data from the light sensor.

7. The composite deicing device for wind turbine blades according to claim 5, characterized in that: The mechanical vibration component is communicatively connected to the control module; The control module is further configured to activate the mechanical vibration component when the de-icing monitoring module detects ice formation on the blade structure.

8. The composite deicing device for wind turbine blades according to claim 5, characterized in that: The composite deicing device for wind turbine blades further comprises a heating component, which is arranged on the blade structure and electrically connected to the external control switch; The heating component is also in communication with the control module; the control module is further configured to start the heating component when the de-icing monitoring module detects that the blade structure is iced.

9. The composite deicing device for wind turbine blades according to claim 1, characterized in that: The surface of the photothermal material coating is coated with a super-hydrophobic coating, and the super-hydrophobic coating has light transmission capability.

10. A wind turbine generator set, characterized in that: A composite deicing device for a wind turbine blade comprising a plurality of blade structures and the device according to any one of claims 1 to 9.

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