Fan blade multi-channel deicing device, control method and storage medium

Abstract

The embodiment of the invention provides a fan blade multi-channel deicing device, a control method and a storage medium. The deicing device comprises a main pipeline and at least one auxiliary pipeline which are arranged in the direction from the blade root to the blade tip of the fan blade, the auxiliary pipeline communicates with the main pipeline at the blade tip, a first air blower and a heater are arranged at a main air inlet, located at the blade root, of the main pipeline, and a second air blower is arranged in the auxiliary pipeline; when the first air blower works, hot air heated by the heater is continuously blown to the blade tip, heat is transmitted to the blade tip through the main pipeline, hot air of the main pipeline enters the auxiliary pipeline through the main air outlet, the second air blower blows the hot air entering the auxiliary pipeline towards the blade root direction, and reverse backflow of the hot air is achieved. And different positions of the fan blade can be kept at high temperature, so that the problems that heat is concentrated in a local area and deicing is not uniform due to single-direction heating of the traditional blade are solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of fan blades, in particular to a fan blade multi-channel deicing device, a control method and a storage medium. BACKGROUND

[0002] When the wind turbine generator is operated in cold regions, the fan blades often produce different degrees of icing phenomenon due to the low temperature, high humidity and airflow crystallization effect caused by high-speed rotation. Once the blade is iced, the mass distribution, aerodynamic shape and surface roughness will change, which will significantly reduce the aerodynamic performance, cause unstable output power, and even lead to increased blade vibration, increased load fluctuation and structural fatigue risk. In the existing blade deicing technology, the internal hot air circulation deicing technology scheme is often used, and the internal channel of the fan blade is single in structure. The airflow organization capacity between the heating pipe and the blade tip and the blade root is limited, which makes it difficult to deliver heat to the blade tip area, and the hot air coverage is insufficient, and the deicing effect of the middle section and the blade tip is different. SUMMARY

[0003] The purpose of the embodiments of the present application is to provide a fan blade multi-channel deicing device, a control method and a storage medium.

[0004] In order to achieve the above-mentioned purpose, the first aspect of the present application provides a fan blade multi-channel deicing device, which comprises: A main pipe is arranged inside the fan blade in the direction from the blade root to the blade tip; At least one auxiliary pipe is arranged inside the fan blade in the direction from the blade root to the blade tip; A first air blower is arranged at a main air inlet of the main pipe at the blade root, and the air outlet direction of the first air blower is towards the main air inlet; A heater is arranged between the main air inlet and the first air blower, and the first air blower blows the heated hot air to the blade tip through the main pipe; At least one second air blower is arranged in the auxiliary pipe, and the air outlet direction of the second air blower is towards the auxiliary air outlet of the auxiliary pipe, which guides the hot air of the blade tip back to the blade root.

[0005] In the embodiments of the present application, the main pipe is provided with a plurality of second main air outlets along the length direction, and the interval between adjacent two second main air outlets from the blade root to the blade tip gradually decreases.

[0006] In the embodiments of the present application, the total area of the plurality of second main air outlets accounts for 30-50% of the cross-sectional area of the main pipe.

[0007] In the embodiments of the present application, the deicing device further comprises: A plurality of temperature sensors are arranged at different positions of the fan blade, respectively, for monitoring the temperature of each region of the fan blade; Multiple pressure sensors are respectively installed at the main air inlet, the main air outlet of the main duct located at the blade tip, the auxiliary air outlet, and the auxiliary air inlet of the auxiliary duct located at the blade tip to monitor the pressure at the main air inlet, the main air outlet, the auxiliary air inlet, and the auxiliary air outlet; Multiple ice thickness sensors are installed at the blade tip and the edge of the wind turbine blades, respectively.

[0008] In this embodiment of the application, the second blower is located at the auxiliary air outlet at the blade root or between the main air outlet of the main duct and the auxiliary air inlet of the auxiliary duct.

[0009] In the embodiments of this application, the first blower is a centrifugal blower and the second blower is an axial flow blower.

[0010] A second aspect of this application provides a control method for a wind turbine blade de-icing device, applied to a multi-channel wind turbine blade de-icing device, the control method comprising: The temperature value of the temperature sensor is acquired in real time. If the temperature value of any temperature sensor is less than the preset temperature range, the first blower, heater and second blower are controlled to turn on and operate at the first preset power.

[0011] In this embodiment of the application, the control method further includes: The system acquires pressure values ​​from multiple pressure sensors in real time. If the pressure value of any one or more pressure sensors corresponding to main pipes and / or auxiliary pipes exceeds the preset pressure range, the system controls the blowers and heaters of other pipes that have not experienced pressure abnormalities to operate at a second preset power, which is greater than the first preset power.

[0012] In this embodiment of the application, the control method further includes: The thickness value of the ice layer is acquired in real time from the ice layer thickness sensor. Each time the thickness value exceeds the minimum thickness value and increases by a preset thickness, the first blower, the second blower, and the heater are controlled to increase the preset power.

[0013] A third aspect of this application provides a machine-readable storage medium storing instructions that, when executed by a processor, configure the processor to perform a control method for a wind turbine blade de-icing device.

[0014] The technical solution of this application involves arranging a main duct and at least one auxiliary duct along the blade root to blade tip direction of the fan blades. The auxiliary duct connects to the main duct at the blade tip. A first blower and a heater are installed at the main air inlet of the main duct located at the blade root. A second blower is installed inside the auxiliary duct. When the first blower is working, it continuously blows hot air, heated by the heater, towards the blade tip, transferring heat to the blade tip through the main duct. The hot air from the main duct enters the auxiliary duct through the main air outlet. The hot air entering the auxiliary duct from the second blower is blown towards the blade root, achieving reverse flow of hot air. This ensures that a high temperature is maintained at different positions on the fan blades, thereby solving the problem of heat concentration in localized areas and uneven de-icing caused by traditional unidirectional blade heating. This ensures that the ice layer can melt quickly in a short time, while reducing energy loss and improving de-icing efficiency.

[0015] Other features and advantages of the embodiments of this application will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the embodiments of this application and form part of the specification. They are used together with the following detailed description to explain the embodiments of this application, but do not constitute a limitation on the embodiments of this application. In the drawings: Figure 1 The schematic diagram illustrates the structure of a wind turbine blade de-icing device according to an embodiment of this application; Figure 2 A flowchart illustrating the control method of the wind turbine blade de-icing device according to an embodiment of this application; Figure 3 This schematic diagram illustrates the internal structure of a computer device according to an embodiment of the present application; 1. Fan blades; 2. Main duct; 3. Auxiliary duct; 4. First blower; 5. Second blower; 6. Second main air outlet; 7. Heater; 8. Blade root; 9. Blade tip. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only for illustration and explanation of the embodiments of this application and are not intended to limit the embodiments of this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0018] like Figure 1As shown in one embodiment of this application, a multi-channel de-icing device for wind turbine blades is provided. The de-icing device includes: a main pipe 2, at least one auxiliary pipe 3, a first blower 4, a heater 7, and at least one second blower 5. The main pipe 2 is disposed inside the wind turbine blade 1 and is arranged along the wind turbine blade 1 from the blade root 8 to the blade tip 9. The pipe opening of the main pipe 2 at the blade tip 9 is the main air outlet, and the pipe opening of the main pipe 2 at the blade root 8 is the main air inlet. The end of the wind turbine blade 1 closest to the shaft is the blade root 8, and the end furthest from the shaft is the blade tip 9. That is, the main pipe 2 is disposed inside the wind turbine blade 1 along its length. The de-icing device includes at least one auxiliary pipe 3, which is disposed inside the wind turbine blade 1 and is arranged along the direction from the blade root 8 to the blade tip 9. The pipe opening of the auxiliary pipe 3 at the blade root 8 is the auxiliary air outlet, and the pipe opening at the blade tip 9 is the auxiliary air inlet. All auxiliary air inlets of the auxiliary ducts 3 located at the blade tip 9 are physically connected to or kept at a fixed distance from the main air outlet of the main duct 2 located at the blade tip 9, forming an air duct passage from the main air inlet to the main air outlet to the auxiliary air inlet and finally to the auxiliary air outlet. This is a circulation channel from the blade root 8 to the blade tip 9 and then from the blade tip 9 back to the blade root 8. Whether physically connected or kept at a fixed distance, it does not affect the flow of hot air from the main duct 2 to the blade tip 9 back to the blade root 8 via the auxiliary ducts 3. Whether the main duct 2 and the auxiliary ducts 3 are connected depends on the internal structure of the fan blades 1. The number of auxiliary ducts 3 can be set to one or more depending on the size of the fan blades 1; a greater number of auxiliary ducts 3 results in better circulation. A first blower 4 is installed at the air inlet of the main duct 2 located at the blade root 8, with the outlet direction of the first blower 4 facing the main air inlet to guide airflow into and out of the main duct 2. A heater 7 is installed between the first blower 4 and the main air inlet of the main duct 2. The heater 7 heats the air blown out by the first blower 4, and the heated air enters the main duct 2 to exchange heat with the blower blades 1. A second blower 5 is installed in the auxiliary duct 3. The outlet direction of the second blower 5 is towards the auxiliary outlet of the auxiliary duct 3, and the suction direction is towards the auxiliary inlet of the auxiliary duct 3 located at the tip of the blower blades 1. The second blower 5 is used to draw the hot air in the main duct 2 into the auxiliary duct 3 and return it to the blade root 8. The arrangement of the main duct 2 and multiple auxiliary ducts 3 can increase the heat exchange time of the hot air inside the blower blades 1, improve the heat exchange efficiency, and the arrangement of the first blower 4 and the second blower 5 can increase the airflow velocity, reduce the temperature difference between the blade root 8 and the blade tip 9, and improve the de-icing efficiency of the blower blades 1.

[0019] In one embodiment, a partition plate is provided inside the fan blade 1 along its length to divide the interior of the fan blade 1 into two regions, namely a first chamber and a second chamber. The first chamber and the second chamber are connected at the blade tip 9 region and are not separated by the partition plate. In this case, the main pipe 2 and the auxiliary pipe 3 of the de-icing device can be respectively set in the first chamber and the second chamber, or simultaneously set in the same chamber. The main pipe 2 and the auxiliary pipe 3 do not need to be physically connected. It is necessary to ensure that the hot air blown towards the blade tip 9 through the main pipe 2 can be guided back to the blade root 8 through the auxiliary pipe 3. However, in actual production, the connection between the first chamber and the second chamber of the blade at the blade tip 9 is often blocked by debris, ice, or glue used during production. Therefore, in actual use, the main pipe 2 and the auxiliary pipe 3 are set in the same chamber. Since the windward side of the fan blade 1 is more prone to icing, it is preferable to set the de-icing device in the chamber corresponding to the windward side of the fan blade 1.

[0020] In one embodiment, a multi-channel de-icing device for the fan blades is installed inside the fan blade 1, forming a multi-channel airflow path extending from the blade root 8 to the blade tip 9 via a main duct 2 and at least one auxiliary duct 3. A first blower 4 is installed at the blade root 8, with its outlet direction facing the main air inlet of the main duct 2. A heater 7 is installed between the first blower 4 and the main air inlet, so that when the first blower 4 is working, it can continuously blow the hot air heated by the heater 7 toward the blade tip 9, transferring heat to the blade tip 9 through the main duct 2. The main duct 2 has a main air outlet in the blade tip 9 area, and multiple auxiliary air inlets of the auxiliary ducts 3 are installed nearby. The auxiliary air inlets of the auxiliary ducts 3 are connected to the main air outlet of the main duct 2 in the blade tip 9 area, allowing the hot air reaching the blade tip 9 to enter each auxiliary duct 3. For each auxiliary duct 3, a second blower 5 is installed inside the auxiliary duct 3. The air outlet of the second blower 5 faces the auxiliary air outlet of the auxiliary duct 3, so that the hot air transported through the auxiliary duct 3 can be blown from the auxiliary air outlet towards the blade root 8, realizing the reverse flow of hot air inside the blade. Hot air is transported to the blade tip 9 through the main duct 2, and then blown in reverse towards the blade root 8 through the auxiliary duct 3, so that the heat forms a closed loop path inside the blade, forming a continuous and stable heat distribution in the blade tip 9 region, the middle section of the blade region, and the blade root 8 region. When an ice layer appears on the blade surface, the heater 7 provides continuous heat, and the first blower 4 drives the hot air to enter the blade tip 9 along the main duct 2; in the blade tip 9 region, the hot air enters the auxiliary duct 3 through the auxiliary air inlet and is driven in reverse by the second blower 5, so that the hot air flows from the auxiliary air outlet towards the blade root 8, heating the internal structure of the blade along the way, and melting the ice layer on the blade surface. By utilizing the multi-channel structure of the main duct 2 and auxiliary duct 3, a three-dimensional heat transport network is formed inside the blade, improving the uniformity of heat coverage along the blade's length. Since the hot air circulates back and forth from the blade root 8 to the blade tip 9 and then from the blade tip 9 back to the blade root 8, this embodiment maintains a high temperature gradient at different locations, ensuring rapid melting of the ice layer while reducing energy loss and improving de-icing efficiency. A heater 7 heats the incoming air at the main air inlet of the main duct 2, and the first blower 4 delivers the heated air to the blade tip 9. Second blowers 5 are installed in multiple auxiliary ducts 3 to achieve reverse blowing of hot air from the blade tip 9 to the blade root 8, allowing heat to flow bidirectionally inside the blade. This ensures sufficient heat is received by the blade tip 9, the middle section of the blade, and the blade root 8, thus solving the problem of uneven de-icing caused by heat concentration in localized areas due to traditional unidirectional blade heating.

[0021] In one embodiment, to address the issue of uneven icing at different length positions of the wind turbine blade 1, multiple second main air outlets 6 are arranged along the length of the main duct 2, allowing hot air to be evenly distributed across multiple nodes within the blade. The main duct 2 extends from the blade root 8 to the blade tip 9, with multiple second main air outlets 6 spaced apart along its length. Each second main air outlet 6 releases a portion of the hot air from the main duct 2 into the blade's internal space, ensuring precise heat distribution across different length sections of the blade. Since thicker or faster icing layers form near the blade tip 9, and heat dissipation is also faster in this area, in this embodiment, the spacing between adjacent second main air outlets 6 gradually decreases from the blade root 8 to the blade tip 9. This means that the second main air outlets 6 are arranged more densely closer to the blade tip 9, gradually increasing the hot air output density along the blade's length. This provides the blade tip 9 area with higher frequency and density hot air coverage, effectively increasing the melting rate of the ice layer in the blade tip 9 area and compensating for its high heat dissipation and high icing characteristics. In actual operation, the first blower 4 and the heater 7 work together to transport the heated high-temperature airflow along the main duct 2. The hot air is released into the blades in stages as it passes through each of the second main air outlets 6, creating a continuous distributed heating effect from the blade root 8 to the blade tip 9. Particularly in the blade tip 9 region, the higher density of the second main air outlets 6 makes it easier for the hot air to form a localized high-temperature zone near the blade tip 9, thereby quickly breaking up the ice buildup at the blade tip 9 and preventing aerodynamic performance degradation, increased blade vibration, or the risk of uneven load due to icing at the blade tip 9. By forming hot air output nodes from sparse to dense along the length of the main duct 2 in this embodiment, the de-icing capacity of different areas of the blade is better matched to their actual degree of icing, thus optimizing heat utilization efficiency. This multi-point distributed heating method significantly improves the uniformity of de-icing inside the blower blades 1, avoiding the problem of insufficient local heating or uneven heat transfer caused by relying on a single outlet, enabling the blower to maintain stable, continuous, and high-efficiency operation in complex low-temperature environments.

[0022] In one embodiment, to address the problem that excessive airflow leakage from the main duct 2 may lead to insufficient hot air towards the blade tip 9, while a small leakage area may result in uneven heating, a reasonable balance between the output and delivery of hot air within the main duct 2 is achieved by limiting the proportion of the total area of ​​the multiple second main air outlets 6 to the cross-sectional area of ​​the main duct 2. In this embodiment, the total area of ​​the multiple second main air outlets 6 accounts for 30-50% of the cross-sectional area of ​​the main duct 2. In actual operation, the heater 7 and the first blower 4 deliver hot air into the main duct 2, and the high-temperature airflow flows along the main duct 2 towards the blade tip 9. If the total area of ​​the second main air outlets 6 is too large, a large amount of hot air will be released near the blade root 8 or the middle region, resulting in a reduction in the effective hot air volume reaching the blade tip 9, thus affecting the de-icing efficiency of the blade tip 9 region. Conversely, if the proportion is too small, the airflow will be too concentrated during long-distance delivery within the main duct 2, resulting in insufficient heat released into the internal space of the blade, making it difficult to form an effective thermal field distribution in multiple key areas. When the total area of ​​the second main air outlet 6 accounts for 30-50% of the cross-sectional area of ​​the main duct 2, a sufficient proportion of hot air can be distributed and released into the interior of the blade, forming a continuous heating zone covering the blade root 8, the middle section, and the blade tip 9. Simultaneously, a sufficient amount of hot air is still smoothly delivered to the very front of the main duct 2, providing more intense directional heating to the blade tip 9 area. By adjusting the proportion of the air outlet area, the airflow velocity, pressure distribution, and hot air release within the main duct 2 are balanced, improving the overall thermal convection efficiency within the blade. Using this area proportion range, the hot air is distributed step-by-step along the main duct 2, splitting at multiple second main air outlets 6, forming a gradient heating distribution from the blade root 8 to the blade tip 9, making the heat received by different areas of the blade more closely match its actual icing conditions.

[0023] In one embodiment, to achieve real-time monitoring of the icing state and airflow operation inside the wind turbine blade 1, a multi-dimensional online monitoring system is constructed by arranging multiple types of sensors inside the blade. This system includes temperature sensors arranged in different areas of the blade, pressure sensors arranged at key air inlets, and ice thickness sensors arranged in easily icing areas. Through comprehensive data acquisition, the de-icing device can monitor the heat distribution, airflow operation, and ice growth inside the blade in real time. Multiple temperature sensors are installed in different areas of the blade to monitor the ambient temperature inside the wind turbine blade 1, thereby monitoring temperature changes in different areas of the blade surface and interior. The blower and heater 7 are activated based on the temperature values ​​obtained from the temperature sensors. Multiple pressure sensors are installed at the main air inlet, main air outlet, auxiliary air inlet, and auxiliary air outlet to monitor pressure changes in different channels in real time. The airflow pressure inside the main duct 2 and auxiliary duct 3 fluctuates depending on the duct congestion. By monitoring the pressure at each air outlet, it is possible to promptly identify whether the airflow is obstructed or whether there are abnormal local pressure differences in the duct. This allows for adjustments such as increasing the blower power, changing the airflow direction, or switching the heating strategy to maintain stable airflow within the blades and prevent icing from causing blockages in the airflow system. Multiple ice thickness sensors are installed at the blade tip 9 and the blade edge to monitor the ice thickness in easily icing areas in real time. The blade tip 9 and the leading edge of the blade are the most prone to icing and are also key components affecting the aerodynamic performance of the blower. Therefore, monitoring the ice thickness in these areas allows for timely identification of changes in ice thickness. When the ice thickness exceeds a preset range, the system can immediately increase the heating temperature for rapid de-icing. Based on real-time ice thickness detection, the risks of blade vibration, fatigue damage, or efficiency reduction caused by ice accumulation can be effectively reduced. By arranging temperature sensors, pressure sensors, and ice thickness sensors inside the blower blades 1, this embodiment achieves comprehensive monitoring of the de-icing process, enabling the system to dynamically adjust the heating power and blower operating strategy based on real-time data. In this embodiment, the temperature sensor, pressure sensor, and ice thickness sensor can be positioned at different locations according to actual usage requirements.

[0024] In one embodiment, to optimize the hot air recirculation path within the auxiliary duct 3 and to make the airflow organization in different areas more flexible and efficient, the second blower 5 is positioned near the auxiliary air outlet at the blade root 8 or between the main air outlet of the main duct 2 and the auxiliary air inlet of the auxiliary duct 3. When the second blower 5 is positioned at the auxiliary air outlet at the blade root 8, the airflow within the auxiliary duct 3 can receive the high-temperature airflow from the main duct 2 at the blade tip 9, and then be smoothly transported towards the blade root 8 under the pressure of the second blower 5, making the auxiliary duct 3 a stable recirculation channel. This ensures that the hot air transported in the reverse direction from the blade tip 9 has sufficient flow driving force, allowing the blade to form a smooth hot air recirculation path from the blade tip 9 to the blade root 8. When the second blower 5 is positioned at the connection between the main duct 2 and the auxiliary duct 3, it directly pressurizes the hot air from the main duct 2 and then sends it into the auxiliary duct 3. This position is usually located in the blade tip 9 area, allowing for compensatory airflow adjustment when there is a long transport path inside the main duct 2. For example, when the tip 9 region requires a higher airflow to increase the de-icing speed, placing the second blower 5 at the connection point allows the auxiliary duct 3 to receive high-pressure, high-speed hot air in advance, enhancing the return air capacity and heat transfer capacity of the auxiliary duct. Simultaneously, this position can also be used to assist in regulating the end pressure of the main duct 2, reducing the pressure difference caused by airflow obstruction in the main duct and maintaining stable operation of the entire system. By arranging the second blower 5 at the auxiliary air outlet or at the connection point between the main duct 2 and the auxiliary duct 3, the airflow organization of the auxiliary duct becomes more flexible. Different arrangement positions can be selected based on the structural characteristics of the fan blade 1, the actual icing area, the ice layer development trend, and the fan operating conditions, achieving a unidirectional hot air delivery pattern from the main duct 2 to the tip 9 and a reverse hot air delivery pattern from the auxiliary duct 3 to the blade root 8. This structure creates a stable and efficient hot air circulation system inside the fan blade 1, allowing the temperature of the tip 9 to rise rapidly.

[0025] In one embodiment, to improve the efficiency of multi-channel airflow delivery within the blower blades 1 and to provide better dynamic characteristics for airflow transmission in different directions between the main duct 2 and the auxiliary duct 3, the first blower 4 and the second blower 5 are designed with different types of blower structures to meet the airflow requirements of different channels. Specifically, the first blower 4, located at the main air inlet of the main duct 2, is a centrifugal blower, while the second blower 5, located within the auxiliary duct 3, is an axial flow blower. This differentiated blower design allows the airflow in the main duct 2 and auxiliary duct 3 during the heating and de-icing process to better conform to the flow path, pressure requirements, and spatial arrangement characteristics. The first blower 4 adopts a centrifugal blower structure with an airflow range of 2000-3000 m³ / h, an air pressure of 1000-3000 Pa, a motor power of 3-8 kW, and stepless speed regulation. The centrifugal blower has a high pressurization capacity, generating sufficient air pressure in the limited space of the blade root 8 region to efficiently pressurize the air heated by the heater 7 into the main duct 2, ensuring stable delivery along the main duct towards the blade tip 9. Since the main duct 2 is typically long and needs to overcome frictional resistance and the diversion effects of multiple secondary main air outlets 6, the centrifugal fan's advantages in high-pressure delivery make it suitable for this location. Through the action of the centrifugal fan, a continuous and strong primary hot airflow can be ensured within the main duct 2, allowing the hot air to be smoothly transmitted to the blade tip 9 and the end area of ​​the main duct 2, thus improving the overall heating coverage.

[0026] The second blower 5 adopts an axial flow fan structure. The axial flow fan has an air volume range of 300-1000 m³ / h, an air pressure of 800-1500 Pa, and a motor power of 1.0-4.0 kW, with stepless speed regulation. The axial flow fan features direct-flow airflow output characteristics, a compact structure, stable airflow direction, and high efficiency, making it suitable for the narrow longitudinal space layout of the auxiliary duct 3. The auxiliary duct 3 is mainly used to return hot air from the blade tip 9 area to the blade root 8. Since the internal space of the auxiliary duct is relatively limited, the axial flow fan has higher airflow driving efficiency in such straight channels, allowing hot air to be smoothly delivered to the blade root 8 along the auxiliary duct 3 while maintaining low resistance loss. Furthermore, the axial flow fan has lower installation space requirements and is more suitable for placement near the blade tip 9 or at the connection between the main duct 2 and the auxiliary duct 3, making the return air path of the auxiliary duct 3 more flexible and reliable. By using a centrifugal fan in the main duct 2 and an axial fan in the auxiliary duct 3, the two channels each receive an airflow power source better suited to their functional requirements. The main duct 2 relies on a centrifugal fan to provide high-pressure directional hot air, ensuring stable long-distance delivery to the blade tip 9; the auxiliary duct 3 relies on an axial fan to provide efficient straight-line return air capability, creating a complete hot air circulation path within the blades. The complementary structure and aerodynamic performance of the two types of fans result in a more rational airflow organization and more uniform heat distribution throughout the de-icing system, significantly improving de-icing efficiency and ensuring continuous and reliable operation of the fans under extremely cold and icing conditions.

[0027] In one embodiment, to ensure that the air entering the main duct 2 can reach a stable temperature range suitable for de-icing within a short time and to achieve continuous heating while ensuring safety, the heater 7 is designed to use a PTC ceramic heating element. PTC heating elements have advantages such as self-limiting temperature characteristics, rapid heating speed, and safety and reliability, thereby creating a continuous and safe hot air delivery environment inside the fan blades 1. In this embodiment, the rated power of the PTC heating element is set to 30-60kW, enabling it to quickly provide the required heat under extremely cold conditions without causing energy waste. During operation, the PTC heater 7 can adjust the output heating temperature to a range of 50-80℃, effectively melting the ice layer inside and on the surface of the blades while avoiding problems such as deterioration of blade material performance or uneven heat distribution due to excessively high temperatures. Through adjustable control of the heating temperature, the system can dynamically adjust the target temperature based on ice thickness, ambient temperature, and temperature sensor feedback information to achieve de-icing modes of different intensities. To ensure the safety of the entire de-icing system during high-intensity operation, heater 7 is equipped with an overheat protection function. It automatically cuts off power when its own temperature exceeds 90°C to prevent overheating caused by excessively high local ambient temperature or abnormal air circulation. This safety mechanism prevents damage or performance degradation to heater 7 and its surrounding structures due to overheating, while also avoiding potential thermal hazards caused by prolonged high temperatures.

[0028] In one embodiment, the diameter of the main duct 2 is 80-150 mm, and the diameter of the auxiliary duct 3 is 60-120 mm. The duct cross-section is elliptical, and the major axis of the elliptical cross-section is aligned with the thickness direction of the fan blade 1 to minimize the impact on the structural strength of the fan blade 1. The second main air outlet 6 on the main duct 2 is inclined at 45°. Multiple second main air outlets 6 are divided into multiple groups, with one group set every 500-800 mm along the blade length direction. Each group includes 2-4 second air outlets. The density of the second main air outlets located in the blade tip 9 region is increased by 50% compared to the second main air outlets 6 in other parts of the fan blade 1. The total area of ​​all second air outlets is 30-50% of the cross-sectional area of ​​the main duct 2.

[0029] In one embodiment, the main pipe 2 and the auxiliary pipe 3 are made of lightweight, high-strength composite materials, such as glass fiber reinforced polypropylene, which has good thermal insulation and temperature resistance properties, and a thermal conductivity ≤0.2 W / (m²). It has a K) and can withstand temperature changes from -40℃ to 150℃.

[0030] In one embodiment, the de-icing device further includes a controller, which is an industrial-grade PLC controller with a response time of ≤100ms and supports independent adjustment of multi-loop parameters. The controller adjusts the power of the heater 7 and the operating efficiency of the blower based on the values ​​obtained from the temperature sensor, pressure sensor and ice thickness sensor, thereby adjusting the heating temperature and airflow speed.

[0031] This application involves arranging a main duct 2 and at least one auxiliary duct 3 along the direction from the blade root 8 to the blade tip 9 of a fan blade 1. The auxiliary duct 3 connects to the main duct 2 at the blade tip 9. A first blower 4 and a heater 7 are installed at the main air inlet of the main duct 2 located at the blade root 8. A second blower 5 is installed inside the auxiliary duct 3. When the first blower 4 is working, it continuously blows hot air heated by the heater 7 toward the blade tip 9, transferring heat to the blade tip 9 through the main duct 2. The hot air from the main duct 2 enters the auxiliary duct 3 through the main air outlet, and the hot air entering the auxiliary duct 3 from the second blower 5 is blown toward the blade root 8, achieving reverse flow of hot air. This allows the fan blade 1 to maintain a high temperature at different positions, thus solving the problem of heat concentration in localized areas and uneven de-icing caused by traditional unidirectional blade heating. This ensures that the ice layer can melt quickly in a short time, while reducing energy loss and improving de-icing efficiency.

[0032] like Figure 2 As shown in the figure, this application proposes a control method for a multi-channel de-icing device for wind turbine blades, including the following steps: Step 202: Obtain the temperature value of the temperature sensor in real time. If the temperature value of any temperature sensor is less than the preset temperature range, control the first blower 4, heater 7 and second blower 5 to turn on and operate at the first preset power.

[0033] Step 204: Real-time acquisition of pressure values ​​from multiple pressure sensors. If the pressure value of any one or more main pipes 2 and / or auxiliary pipes 3 corresponding to the pressure sensors is greater than the preset pressure range, control the blowers and heaters 7 of other pipes that have not experienced pressure abnormalities to operate at a second preset power, which is greater than the first preset power.

[0034] Step 206: Obtain the thickness value of the ice layer thickness sensor in real time. After the thickness value exceeds the minimum thickness value and increases by the preset thickness each time, control the first blower 4, the second blower 5 and the heater 7 to increase the preset power.

[0035] In one embodiment, an automatic control strategy based on temperature monitoring is established, enabling the heater 7, the main duct 2 fan, and the auxiliary duct 3 fan to start promptly when needed, thereby forming a stable heating and circulating airflow and achieving rapid response to icing areas inside the blades. The control method of this embodiment is applied to the aforementioned multi-channel de-icing device for wind turbine blades. Real-time temperature values ​​of different areas of the blade are obtained through temperature sensors, serving as the basis for determining whether to enter de-icing mode. During the operation of the de-icing device, multiple temperature sensors are located at key positions such as the inner wall of the blade, around the main duct 2, around the auxiliary duct 3, and the blade tip 9. By continuously collecting temperature data, the system can reflect the temperature changes in various areas inside the blade in real time. When the temperature value monitored by any temperature sensor is lower than the preset temperature range, the system determines that there may be an icing trend or that ice is about to form in or near that area. At this time, to prevent further ice accumulation, the control system immediately controls the first blower 4, the heater 7, and the second blower 5 to start simultaneously. The system controls the first blower 4 to operate at a preset power, continuously supplying high-temperature air from the heater 7 into the main duct 2. This allows the hot air to be transported along the blade length from the blade root 8 to the blade tip 9, providing a stable heat source for the internal channels of the blades. The heater 7 also operates at the preset power during the same time period, rapidly raising the air entering the main duct 2 to a suitable de-icing temperature range, thereby improving the de-icing capacity of the hot air. Simultaneously, the second blower 5 enters synchronous operation, drawing hot air from the blade tip 9 or the area connected to the main duct 2 into the auxiliary duct 3 at the preset power, and then returning it along the auxiliary duct towards the blade root 8, creating a bidirectional hot air circulation from the main duct 2 to the auxiliary duct 3 within the blades. The preset power includes multiple power parameters, corresponding to the first blower 4, the second blower 5, and the heater 7, respectively. The control strategy is based on real-time temperature monitoring, ensuring that de-icing is triggered only when necessary, avoiding energy waste and improving overall operating efficiency.

[0036] In one embodiment, to further enhance the safety of the multi-channel de-icing process inside the fan blade 1, real-time monitoring by pressure sensors enables dynamic judgment of the airflow status of the main duct 2 and auxiliary duct 3. When the pressure inside the duct increases due to ice accumulation, airflow obstruction, local duct contraction, or blower malfunction, the system can automatically increase the de-icing intensity based on the pressure anomaly to ensure smooth airflow and quickly eliminate potential risks. This embodiment triggers a second preset power operation through pressure monitoring, forming a graded response control mechanism during the de-icing process. Inside the fan blade 1, multiple pressure sensors are respectively installed at the main air inlet, main air outlet, auxiliary air inlet, and auxiliary air outlet to monitor the pressure changes of the main duct 2 and auxiliary duct 3 at different locations in real time. The system continuously collects these pressure values ​​during operation to determine whether the airflow in the channel is smooth. When the pressure value detected by any one or more pressure sensors exceeds the preset pressure range, the system determines that airflow obstruction may occur in that area, such as ice blockage in the channel, air forced to change direction due to local icing, or a sudden pressure increase caused by a reduction in the effective cross-sectional area of ​​the duct. Upon detecting a pressure value exceeding the preset pressure range, the control system immediately enters enhanced de-icing mode, automatically switching the blowers and heaters 7 in other pipes without pressure anomalies to operate at the second preset power. The second preset power is higher than the first preset power, increasing the hot air velocity and heat density within the relevant channels. This allows for the transfer of more energy to the abnormal area in a shorter time, quickly melting ice that may be obstructing airflow. This prevents accelerated ice buildup due to insufficient local temperature, preventing further airflow blockage and ensuring the de-icing cycle within the entire blade remains intact. The increased hot air output from the first blower 4 and the higher heat output from the heater 7 simultaneously raise the airflow pressure and temperature in the main pipe 2, rapidly flushing the icing area towards the blade tip 9. Simultaneously, the second blower 5 generates return hot air at greater power in the auxiliary pipe 3, concentrating the heat returned from the blade tip 9 to the blade root 8, creating a pincer heating effect on the problem area from two directions, further improving de-icing efficiency. Since abnormal pressure is often an early signal of localized icing in the channel, a pressure-triggered active adjustment mechanism can eliminate potential hazards before severe blockage occurs, improving the overall system's operational stability. A dynamic adjustment strategy based on pressure sensors can automatically adjust the operating power according to the actual airflow conditions inside the pipeline, thereby avoiding risks such as circulation interruptions, increased fan vibration, or abnormal structural stress caused by localized ice blockage. The second preset power includes multiple power parameters, corresponding to the first blower 4, the second blower 5, and the heater 7, respectively.

[0037] In one embodiment, to enable the de-icing process to respond progressively to the dynamic growth of the ice layer, an adaptive power adjustment strategy based on ice layer increments is constructed through continuous monitoring of ice layer thickness sensors. Multiple ice layer thickness sensors are located in key icing areas such as the blade tip 9 and blade edges, continuously collecting real-time thickness values ​​during operation and transmitting them to the control system. When the system detects that the thickness value of a certain ice layer thickness sensor exceeds the minimum thickness value, it determines how much the thickness value has increased relative to the minimum thickness value. Each time the ice layer thickness exceeds the minimum thickness value and increases by a preset thickness, the first blower 4, the second blower 5, and the heater 7 are controlled to increase their preset power. This allows the ice layer to be heated to its melting point more quickly, accelerating the softening and shedding process. In this embodiment, for every 1mm increase in ice layer thickness, the heating temperature of the heater 7 increases by 5-8 degrees Celsius, the airflow speed of the blowers increases by 8-10%, and when the pressure in one pipe exceeds 150% of the preset pressure, the power of other pipes is automatically increased by 20-30%.

[0038] Figure 2 This is a flowchart illustrating the control method of a multi-channel de-icing device for wind turbine blades in one embodiment. It should be understood that, although... Figure 2 The steps in the flowchart are shown sequentially as indicated by the arrows, but these steps are not necessarily executed in the order indicated by the arrows. Unless otherwise explicitly stated herein, there is no strict order in which these steps are executed, and they can be performed in other orders. Figure 2 At least some of the steps in the process may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times. The execution order of these sub-steps or stages is not necessarily sequential, but can be executed in turn or alternately with other steps or at least some of the sub-steps or stages of other steps.

[0039] The de-icing device in this embodiment is equipped with a communication module, which supports interface with the wind farm SCADA system, enabling remote monitoring and parameter setting.

[0040] In one embodiment, taking a 53-meter-long wind turbine blade 1 made of glass fiber reinforced epoxy resin as an example, the de-icing device of this application is used as follows: A partition plate is provided inside the wind turbine blade 1 along its length, dividing the interior of the blade 1 into two regions: a first chamber and a second chamber. The first chamber and the second chamber are connected at the blade tip 9 region and are not separated by the partition plate. The main pipe 2 and the auxiliary pipe 3 of the de-icing device are located in the first chamber. The main pipe 2 and the auxiliary pipe 3 do not need to be physically connected; it is sufficient to ensure that the hot air blown towards the blade tip 9 through the main pipe 2 can be diverted back to the blade root 8 through the auxiliary pipe 3. The main duct 2 has an elliptical cross-section with a major axis of 120mm and a minor axis of 80mm. It is made of glass fiber reinforced polypropylene and is arranged along the inner side of the fan blade 1. Multiple sets of second main air outlets 6 are provided, each set including three second main air outlets 6. The spacing between adjacent second main air outlets 6 gradually decreases from 800mm from the blade root 8 to the blade tip 9, down to 500mm, with a spacing of 300mm in the last 10 meters of the blade tip 9 area. The total area of ​​the second main air outlets 6 is 40% of the duct's cross-sectional area. The auxiliary duct 3 has an elliptical cross-section with a major axis of 100mm and a minor axis of 60mm. It is made of glass fiber reinforced epoxy resin and is arranged along the inner side of the pressure surface of the fan blade 1. An auxiliary air inlet is provided at the blade tip 9, with a total area of ​​35% of the auxiliary duct 3's cross-sectional area.

[0041] The first blower 4 is centrifugal, with an air volume of 2500 m³ / h, an air pressure of 2000 Pa, and a motor power of 5 kW. The heater 7 is a PTC ceramic heater with a rated power of 50 kW and an adjustable heating temperature of 50-180℃. The second blower 5 is axial, with an air volume of 800 m³ / h, an air pressure of 1000 Pa, and a motor power of 2 kW. Eight temperature sensors are installed, two at the blade root, four in the blade middle, and two at the blade tip, with a measurement range of -50℃ to 200℃ and an accuracy of ±0.5℃. Four pressure sensors are installed, one at the inlet and outlet of the first pipe and the other at the inlet and outlet of the second pipe, with a measurement range of 0-3000 Pa and an accuracy of ±1%. Three ice thickness sensors are installed, one at 1 / 4, 1 / 2, and 3 / 4 of the leading edge of the blade, with a measurement range of 0-10 mm and an accuracy of ±0.2 mm. The controller supports 4-20mA analog input and output and has wireless communication capabilities. After using the de-icing device of this application, the wind turbine blade 1 in this embodiment can carry out de-icing operations with an average ice thickness of 20mm at an ambient temperature of -20℃. By closing the second main air outlet 6 at the last 5 meters of the blade tip 9 and sealing the trailing edge to simulate blockage in the blade tip 9 area, the system automatically increases the power of the return circulation loop, and the blade tip 9 area can still maintain effective de-icing.

[0042] In one embodiment, taking the de-icing device of this application as an example, for a 76-meter-long fan blade 1 made of carbon fiber reinforced epoxy resin: the main duct 2 has an elliptical cross-section, with a major axis of 150mm and a minor axis of 100mm, and is made of carbon fiber reinforced polypropylene, arranged along the inner side of the suction surface of the fan blade 1; multiple sets of second main air outlets 6, each set including 4 second main air outlets 6, the spacing between adjacent second main air outlets 6 gradually decreases from 1000mm to 600mm from the blade root 8 to the blade tip 9, and the spacing in the last 15 meters of the blade tip 9 is 400mm; the total area of ​​the second main air outlets 6 is 45% of the cross-sectional area of ​​the duct. The blade is equipped with two auxiliary ducts 3, namely the first auxiliary duct 3 and the second auxiliary duct 3. The first auxiliary duct 3 has an elliptical cross-section with a major axis of 120 mm and a minor axis of 80 mm, and is arranged along the inner side of the blade's pressure surface. The second auxiliary duct 3 has an elliptical cross-section with a major axis of 100mm and a minor axis of 60mm, arranged along the inner side of the leading edge of the blade. The first and second auxiliary ducts 3 each have four auxiliary air inlets at the blade tip 9, with a total area of ​​35% of their respective duct cross-sectional areas. The first blower 4 is centrifugal, with an air volume of 3000m³ / h, an air pressure of 3000Pa, and a motor power of 7kW. The heater 7 is a PTC ceramic heater with a rated power of 60kW and an adjustable heating temperature of 50-180℃. The second blower 5, located within the first auxiliary duct 3, is axial flow, with an air volume of 800m³ / h, an air pressure of 1500Pa, and a motor power of 2.0kW. The second blower 5, located within the second auxiliary duct 3, is also axial flow, with an air volume of 1000m³ / h, an air pressure of 1500Pa, and a motor power of 3kW. Twelve temperature sensors are provided, two at the blade root, six in the blade middle, and four at the blade tip, with a measurement range of -50℃ to 100℃ and an accuracy of ±0.5℃. Six pressure sensors are provided, located at the inlet and outlet of the three pipes, with a measurement range of 0-3000Pa and an accuracy of ±1%. Five ice thickness sensors are provided, located at the leading edge of the blade at 1 / 5, 2 / 5, 3 / 5, and 4 / 5 of the blade, and at the blade tip 9, with a measurement range of 0-10mm and an accuracy of ±0.2mm. The controller supports multi-loop independent control and has 4G wireless communication capabilities. In this embodiment, when the wind turbine blade 1 uses the de-icing device of this application, de-icing operations with an average ice thickness of 20mm can be carried out at an ambient temperature of -20℃. By closing the last 5 meters of the second main air outlet 6 at the blade tip 9 and sealing the trailing edge to simulate blockage in the blade tip 9 area, the system automatically increases the power of the return circulation loop, and the blade tip 9 area can still maintain effective de-icing.

[0043] This application provides a storage medium storing a program that, when executed by a processor, implements the control method of the aforementioned multi-channel de-icing device for wind turbine blades.

[0044] This application provides a processor for running a program, wherein the program executes the control method of the multi-channel de-icing device for wind turbine blades.

[0045] In one embodiment, a computer device is provided, which may be a terminal, and its internal structure diagram may be as follows: Figure 3 As shown, the computer device includes a processor A01, a network interface A02, a display screen A04, an input device A05, and a memory (not shown) connected via a system bus. The processor A01 provides computing and control capabilities. The memory includes internal memory A03 and a non-volatile storage medium A06. The non-volatile storage medium A06 stores an operating system B01 and a computer program B02. The internal memory A03 provides an environment for the operation of the operating system B01 and the computer program B02 stored in the non-volatile storage medium A06. The network interface A02 is used for communication with external terminals via a network connection. When the computer program is executed by the processor A01, it implements a control method for a multi-channel de-icing device for wind turbine blades. The display screen A04 can be an LCD screen or an e-ink display screen. The input device A05 can be a touch layer covering the display screen, buttons, a trackball, or a touchpad mounted on the computer device casing, or an external keyboard, touchpad, or mouse.

[0046] Those skilled in the art will understand that embodiments of this application can be provided as methods, systems, or computer program products. Therefore, this application can take the form of a completely hardware embodiment, a completely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, this application can take the form of a computer program product embodied on one or more computer-usable storage media (including but not limited to disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0047] This application is described with reference to flowchart illustrations and / or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of this application. It will be understood that each block of the flowchart illustrations and / or block diagrams, and combinations of blocks in the flowchart illustrations and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, special-purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, generate instructions for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 A device that provides the functions specified in one or more boxes.

[0048] These computer program instructions may also be stored in a computer-readable storage medium that can direct a computer or other programmable data processing device to function in a particular manner, such that the instructions stored in the computer-readable storage medium produce an article of manufacture including instruction means, which are implemented in a process Figure 1 One or more processes and / or boxes Figure 1 The function specified in one or more boxes.

[0049] These computer program instructions may also be loaded onto a computer or other programmable data processing equipment to cause a series of operational steps to be performed on the computer or other programmable equipment to produce a computer-implemented process, thereby providing instructions that execute on the computer or other programmable equipment for implementing the process. Figure 1 One or more processes and / or boxes Figure 1 The steps of the function specified in one or more boxes.

[0050] In a typical configuration, a computing device includes one or more processors (CPU), input / output interfaces, network interfaces, and memory.

[0051] Memory may include non-persistent memory in computer-readable media, such as random access memory (RAM) and / or non-volatile memory, like read-only memory (ROM) or flash RAM. Memory is an example of computer-readable media.

[0052] Computer-readable media includes both permanent and non-permanent, removable and non-removable media that can store information using any method or technology. Information can be computer-readable instructions, data structures, modules of programs, or other data. Examples of computer storage media include, but are not limited to, phase-change memory (PRAM), static random access memory (SRAM), dynamic random access memory (DRAM), other types of random access memory (RAM), read-only memory (ROM), electrically erasable programmable read-only memory (EEPROM), flash memory or other memory technologies, CD-ROM, digital versatile optical disc (DVD) or other optical storage, magnetic tape, magnetic magnetic disk storage or other magnetic storage devices, or any other non-transferable medium that can be used to store information accessible by a computing device. As defined herein, computer-readable media does not include transient computer-readable media, such as modulated data signals and carrier waves.

[0053] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0054] The above are merely embodiments of this application and are not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

Claims

1. A multi-channel de-icing device for a wind turbine blade, characterized in that, The deicing device comprises: a main pipe arranged inside the fan blade in a direction from a blade root to a blade tip of the fan blade; at least one auxiliary pipe arranged inside the fan blade in a direction from the blade root to the blade tip of the fan blade; a first air blower arranged at a main air inlet of the main pipe at the blade root, the first air blower having an air outlet direction towards the main air inlet; a heater arranged between the main air inlet and the first air blower, the first air blower blowing heated hot air through the main pipe towards the blade tip; a second air blower arranged in the auxiliary pipe, the second air blower having an air outlet direction towards an auxiliary air outlet of the auxiliary pipe at the blade root, the second air blower guiding the hot air at the blade tip back to the blade root.

2. The fan blade multi-channel de-icing device of claim 1, wherein, The main pipe is provided with a plurality of second main air outlets at intervals along a length direction, and an interval between two adjacent second main air outlets from the blade root to the blade tip gradually decreases.

3. The fan blade multi-channel de-icing device of claim 2, wherein, A total area of the plurality of second main air outlets accounts for 30-50% of a cross-sectional area of the main pipe.

4. The fan blade multi-channel de-icing device of claim 1, wherein, The deicing device further comprises: a plurality of temperature sensors arranged at different positions of different regions of the fan blade respectively, for monitoring temperatures of the fan blade; a plurality of pressure sensors arranged at the main air inlet, a main air outlet of the main pipe at the blade tip, the auxiliary air outlet, and an auxiliary air inlet of the auxiliary pipe at the blade tip respectively, for monitoring pressures at the main air inlet, the main air outlet, the auxiliary air inlet, and the auxiliary air outlet; a plurality of ice layer thickness sensors arranged at the blade tip and an edge of the fan blade respectively.

5. The fan blade multi-channel de-icing device of claim 1, wherein, The second air blower is arranged at the auxiliary air outlet of the blade root or between the main air outlet of the main pipe and the auxiliary air inlet of the auxiliary pipe.

6. The fan blade multi-channel de-icing device of claim 1, wherein, The first air blower is a centrifugal fan, and the second air blower is an axial fan.

7. A control method of a wind turbine blade de-icing device, characterized by, The control method applied to the fan blade multi-channel deicing device of any one of claims 1-6 comprises: real-time acquisition of temperature values of the temperature sensors, and in a case where a temperature value of any one of the temperature sensors is less than a preset temperature range, the first air blower, the heater, and the second air blower are controlled to be turned on and operated at a first preset power.

8. The control method of the de-icing apparatus for a fan blade according to claim 7, characterized by, The control method further comprises: real-time acquisition of pressure values of the plurality of pressure sensors, and in a case where a pressure value of any one or more pressure sensors corresponding to the main pipe and / or the auxiliary pipe is greater than a preset pressure range, air blowers and heaters of other pipes not having pressure abnormalities are controlled to be operated at a second preset power, the second preset power being greater than the first preset power.

9. The control method of the de-icing device for a fan blade according to claim 7, characterized by, The control method further comprises: real-time acquisition of thickness values of the ice layer thickness sensors, and in a case where the thickness values exceed a minimum thickness value and increase by a preset thickness each time, the first air blower, the second air blower, and the heater are controlled to be increased by a preset power.

10. A machine-readable storage medium having stored thereon instructions, the instructions being executable by a machine to cause the machine to: The instruction, when executed by a processor, causes the processor to be configured to perform the control method of the fan blade deicing device according to any one of claims 7-9.

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