A real-time deicing method for wind turbines

Abstract

The present invention belongs to the technical field of wind turbine deicing, and specifically relates to a real-time deicing method for wind turbines, comprising the following steps: obtaining the position parameters between the rotation path of the wind turbine blades, the ice detection module and the deicing module; testing the icing threshold of the wind turbine blades, and detecting environmental parameters according to the icing threshold to determine whether to start the icing detection module and the deicing module; when the icing threshold is reached, the system starts the icing detection module to obtain the icing state of the wind turbine blades, and starts the deicing module after the rotation cycle of the wind turbine blades reaches the working range of the deicing module. The present invention can realize remote ice melting and improve the efficiency and safety of ice layer processing. This technology can not only monitor the ice layer state in real time, but also automatically adjust the deicing process through an intelligent control system to achieve efficient and continuous ice layer management, thereby optimizing the operating performance of the wind turbine, reducing maintenance costs, and improving the overall wind energy utilization efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of deicing of wind turbines, and in particular relates to a real-time deicing method for wind turbines. Background Art

[0002] During the operation of wind turbines, especially in cold climates, icing on the blades can significantly affect their performance and safety. The accumulation of ice not only reduces the energy output of the wind turbine, but can also cause blade imbalance, mechanical damage, and even system failure.

[0003] Problems with existing technologies:

[0004] Traditional ice melting methods usually rely on mechanical ice scraping or heating equipment, which often require downtime, resulting in production interruptions and efficiency losses. Therefore, it is particularly important to develop a technology that can monitor and process ice in real time during the operation of wind turbines. Summary of the invention

[0005] The purpose of the present invention is to provide a real-time de-icing method for wind turbines, which can realize remote ice melting and improve the efficiency and safety of ice layer treatment. This technology can not only monitor the state of the ice layer in real time, but also automatically adjust the de-icing process through an intelligent control system to achieve efficient and continuous ice layer management, thereby optimizing the operating performance of wind turbines, reducing maintenance costs, and improving the overall wind energy utilization efficiency.

[0006] The technical solution adopted by the present invention is as follows:

[0007] A real-time deicing method for a wind turbine generator comprises the following steps:

[0008] Obtaining the position parameters between the wind turbine blade rotation path, the ice detection module and the deicing module;

[0009] Test the icing threshold of wind turbine blades, and detect environmental parameters based on the icing threshold to determine whether to start the icing detection module and de-icing module;

[0010] When the icing threshold is reached, the system starts the icing detection module to obtain the icing status of the wind turbine blades, and starts the deicing module after the rotation cycle of the wind turbine blades reaches the working range of the deicing module;

[0011] The deicing method of the deicing module comprises the following steps:

[0012] The de-icing module acts on the rotating blades of the wind turbine to de-ice the inspected ice layer;

[0013] The de-icing module is activated to melt ice on the rotating blades of the wind turbine;

[0014] Repeat the above steps, and when the ice detection module detects no ice layer, remove the ice layer on the wind turbine blades in a circular outward direction.

[0015] The wind turbine blades rotate to form a circular path, and the ice detection module and the de-icing module spread outward in a circular shape corresponding to the center of the circle.

[0016] The ice detection module includes a variety of devices for detecting ice thickness and ice distribution through reflected waves, and a system for connecting and operating the ice detection module and the de-icing module.

[0017] The ice coating detection module focuses on detection through at least two types of reflected wave ice layer detection devices.

[0018] A real-time deicing system for a wind turbine generator includes a group of power control modules, an icing detection module electrically connected to the power control module, a deicing module and a microprocessor;

[0019] The microprocessor is also electrically connected to a data acquisition system, a wireless alarm system and a communication system;

[0020] Wherein, the microprocessor processes the ice layer data detected by the ice detection module, generates a de-icing execution signal and transmits it to the de-icing module and the power control module;

[0021] The power control module is electrically connected to the wind turbine generator set.

[0022] A real-time deicing device for a wind turbine generator, comprising an ice detection module, a deicing module and a base;

[0023] The ice detection module includes at least one laser ice detector and at least one radar ice detector.

[0024] The deicing module includes at least one group of laser ice-melting modules and at least one group of microwave ice-melting modules.

[0025] The group of laser ice melting modules performs work on the surface of the wind turbine blades and is coupled with an annular heat sink;

[0026] The vapor chamber is provided with a protrusion on the side away from the rotating shaft of the wind turbine blade, and the protrusion extends to one side of another group of vapor chambers in the vapor chamber annular diffusion array.

[0027] The base is used to install an ice monitoring module and an ice removal module. The base is installed on a wind turbine generator set, and the base and the wind turbine generator set are universally adjustable.

[0028] The base includes a mounting seat for fixed installation with a wind turbine generator set, a first platform is installed in the mounting seat, and the second platform and the third platform are driven in sequence through the steering gear assembly, and the hinge direction between the third platform and the second platform is perpendicular to the hinge direction between the second platform and the first platform, and the microwave ice melting module, the laser ice melting module, the radar ice meter and the laser ice meter are fixedly installed on the outer surface of the third platform.

[0029] The technical effects achieved by the present invention are:

[0030] The present invention realizes remote ice melting through the deicing module, improves the efficiency and safety of ice layer processing, can monitor the ice layer status in real time through the ice coverage detection module, and can automatically adjust the deicing process through the intelligent control system to achieve efficient and continuous ice layer management, thereby optimizing the operating performance of the wind turbine, reducing maintenance costs, and improving the overall wind energy utilization efficiency.

[0031] In the present invention, the wind turbine blades rotate during the ice melting process, so that the ice layer that becomes loose after the ice melts can fall off freely, and the ice that has not fallen off continues to work. Since the present application melts the ice in real time through the ice detection module and the de-icing module, the thickness of the ice layer will not exceed 1 cm, so the fallen ice layer will not cause damage to the wind turbine generator set.

[0032] The present invention can melt the ice at the bottom layer by heating the vapor chamber, and allow heated water to flow to the bottom of the ice layer through the vapor chamber, thereby weakening the adhesion of the ice layer, thereby coordinating the rotation of the wind turbine blades to achieve free shedding of the ice layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 is a schematic diagram of the deicing steps of the present invention;

[0034] Figure 2 It is a schematic diagram of deicing steps of the deicing module in the present invention;

[0035] Figure 3 It is a schematic diagram of the structure of the deicing system in the present invention;

[0036] Figure 4 It is a structural schematic diagram of the ice detection module in the present invention;

[0037] Figure 5 It is a structural schematic diagram of a wind turbine generator set and a power supply control module in the present invention;

[0038] Figure 6 It is a structural schematic diagram of the deicing device in the present invention;

[0039] Figure 7 The present invention Figure 6 A magnified view of the structure at center A;

[0040] Figure 8 The present invention Figure 6 A magnified view of the structure at B in the middle;

[0041] Fig. 9 It is a structural schematic diagram of the base in the present invention.

[0042] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0043] 1. Wind turbine generator set; 2. Wind turbine blades; 3. Heat sink; 4. Protrusion;

[0044] 5. Base; 51. Mounting seat; 52. First platform; 53. Second platform; 54. Third platform; 55. Microwave ice melting module; 56. Laser ice melting module; 57. Radar ice detector; 58. Laser ice detector; 59. First gear; 60. Second gear; 61. First servo; 62. Second servo; 63. Power control module. DETAILED DESCRIPTION

[0045] In order to make the purpose and advantages of the present invention more clearly understood, the present invention is specifically described below in conjunction with embodiments. It should be understood that the following text is only used to describe one or several specific embodiments of the present invention, and does not strictly limit the scope of protection of the specific claims of the present invention.

[0046] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the terms used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0047] Embodiment 1:

[0048] like Figure 1-5 As shown, a real-time deicing method for a wind turbine generator comprises the following steps:

[0049] Obtaining the position parameters between the rotation path of the wind turbine blade 2, the ice detection module and the deicing module;

[0050] Testing the icing threshold of the wind turbine blade 2, and detecting environmental parameters according to the icing threshold to determine whether to start the icing detection module and the deicing module;

[0051] When the icing threshold is reached, the system starts the icing detection module to obtain the icing status of the wind turbine blade 2, and starts the deicing module after the rotation cycle of the wind turbine blade 2 reaches the deicing module working range.

[0052] Furthermore, an icing threshold curve drawn based on the icing threshold of the current wind turbine generator set 1 installation area is entered into the microprocessor, which is used for the microprocessor to determine whether the current environment reaches or exceeds the icing threshold. The microprocessor is also connected to multiple environmental humidity, temperature, wind speed, and pressure sensors to realize the detection of environmental parameters.

[0053] Furthermore, the deicing method of the deicing module includes the following steps:

[0054] The de-icing module acts on the rotating wind turbine blades 2 to de-ice the inspected ice layer, and the de-icing module is started to melt the ice on the rotating wind turbine blades 2.

[0055] Repeat the above steps, and when the ice detection module detects no ice layer, remove the ice layer on the wind turbine blade 2 in a circular outward direction.

[0056] Based on the above, the principle is:

[0057] According to the rotation path of the wind turbine blade 2, a circular rotation path is established with the center of rotation of multiple wind turbine blades 2 as the central axis, and the circular rotation path is divided into multiple annular paths. A coordinate system is established according to the icing detection module and the de-icing module, and the base 5 on which the icing detection module and the de-icing module are installed is used to adjust the working angle of the icing detection module and the de-icing module. In the adjustment process, first, the circle at the center of the circle is scanned and de-iced by the icing detection module and the de-icing module, and the working direction of the icing detection module and the de-icing module is further turned downward, and the ice melting path that spreads outward from the center of the circle is sequentially adjusted. The advantage of this method of ice melting is that the wind turbine blade 2 rotates during the ice melting process, and the wind turbine blade 2 makes the ice layer that is loosened after the ice is melted fall off freely, and the ice layer that has not fallen off continues to work. Since the present application is to melt ice in real time through the icing detection module and the de-icing module, the thickness of the ice layer will not exceed 1 cm, so the fallen ice layer will not cause damage to the wind turbine 1.

[0058] Furthermore, the de-icing module can realize remote ice melting to improve the efficiency and safety of ice layer treatment. The ice cover detection module can monitor the ice layer status in real time, and the de-icing process can be automatically adjusted through the intelligent control system to achieve efficient and continuous ice layer management, thereby optimizing the operating performance of wind turbines, reducing maintenance costs, and improving the overall wind energy utilization efficiency.

[0059] Furthermore, by installing the base 5 on the bottom side of the wind turbine blade 2 corresponding to the wind turbine generator set 1, the impact of environmental factors on the ice detection module and the de-icing module on the base 5 can be reduced, thereby avoiding the detection data and the de-icing process from being affected and improving the accuracy. In addition, by first de-icing the bottom side of the wind turbine blade 2, secondary freezing caused by the water generated during the de-icing process flowing to the shaft position can be avoided.

[0060] Furthermore, by installing the base 5 on the bottom side of the corresponding wind turbine blade 2, during the de-icing process and when the wind turbine blade 2 is rotating, it is beneficial to the loosening of the ice layer and the surface of the wind turbine blade 2, as well as the natural shedding of the ice layer, thereby improving the de-icing efficiency.

[0061] Embodiment 2:

[0062] Please refer to Figure 3 , Figure 4 and Figure 7 The ice detection module includes a variety of devices for detecting ice thickness and ice distribution through reflected waves, and a system for connecting and operating the ice detection module and the de-icing module.

[0063] Among them, the device for detecting ice thickness and ice distribution by reflected wave, the sensors used by the reflected wave detection device include but are not limited to ultrasonic sensors, radar sensors, infrared sensors, and laser sensors.

[0064] Furthermore, the ice detection module detects the ice layer by at least two reflected wave devices, that is, the ice layer is detected simultaneously by two or more sensors to obtain clearer detection data.

[0065] Furthermore, for example, the ice detection module includes at least one laser ice meter 58 and at least one radar ice meter 57. The laser ice meter 58 has high accuracy but is greatly affected by the environment, while the radar ice meter 57 has little environmental impact but low accuracy. The combination of the two can achieve high-precision measurement and reduce environmental interference.

[0066] For example, the ice detection module includes at least one ultrasonic ice detector and at least one radar ice detector 57. The ultrasonic ice detector can detect the rotation speed of the wind turbine blade 2 within the range, and can determine the time when the wind turbine blade 2 arrives at the deicing location through the system. The radar ice detector 57 has little environmental impact but low accuracy. The combination of the two can achieve high-precision measurement.

[0067] For example, the ice detection module includes at least one infrared ice detector and at least one radar ice detector 57. The infrared ice detector can realize the actual temperature of the wind turbine blade 2 and the ice layer, so as to realize the estimation of the de-icing module and improve the de-icing efficiency. The radar ice detector 57 has little environmental impact and low accuracy. Combined with the infrared ice detector imaging and the radar ice detector 57 positioning, the combination of the two can achieve high-precision measurement and positioning.

[0068] Embodiment three:

[0069] Please refer to Figure 3-5 , a real-time deicing system for a wind turbine generator, comprising a set of power control modules 63 and an icing detection module, a deicing module and a microprocessor electrically connected to the power control module 63;

[0070] The microprocessor is also electrically connected to a data acquisition system, a wireless alarm system and a communication system;

[0071] Among them, the microprocessor processes the ice layer data detected by the icing detection module, generates an execution deicing signal and transmits it to the deicing module and the power control module 63. The power control module 63 is electrically connected to the wind turbine generator set 1, and the power control module 63 includes a power module and a microprocessor.

[0072] According to the above structure, its operating principle is:

[0073] The power control module is connected to the wind turbine generator to provide power for the entire system. The microprocessor analyzes the ice layer data and adjusts the power of the ice melting module and the direction of the base 5. The data acquisition module records and saves the analysis data. The wireless alarm system and communication system transmit real-time data to the remote monitoring personnel so that they can make comprehensive judgments and decisions based on the power changes of the wind turbine.

[0074] Embodiment 4:

[0075] Please refer to Figure 6-9 A real-time deicing device for a wind turbine generator is composed of an ice detection module, a deicing module and a base 5.

[0076] The deicing module includes at least one set of laser ice-melting modules 56 and at least one set of microwave ice-melting modules 55 .

[0077] Embodiment 41:

[0078] Further references Figure 6-8 A group of laser ice melting modules 56 work on the surface of the wind turbine blade 2 coupled with a ring-shaped heat sink 3.

[0079] According to the above structure, the principle is:

[0080] The laser ice-melting module 56 works on the heat spreader 3 and the ice layer covering the surface of the heat spreader 3, so that a part of the ice layer melts into water. Then the microwave ice-melting module 55 is started to heat the water. The water has fluidity and gradually melts the surface ice layer, thereby achieving the de-icing effect. When the laser ice-melting module 56 irradiates the heat spreader 3, the ice on the bottom layer can be melted by heating the heat spreader 3, and the heated water flows into the bottom of the ice layer through the heat spreader 3, thereby weakening the adhesion of the ice layer, thereby cooperating with the rotation of the wind turbine blades 2 to achieve the free shedding of the ice layer.

[0081] Embodiment 42:

[0082] Please refer to Figure 6-8 The heat spreader 3 is located on the side away from the rotating shaft of the wind turbine blade 2 and is provided with a protrusion 4, and the protrusion 4 extends to one side of another group of heat spreaders 3 in the annular diffusion array of the heat spreaders 3.

[0083] The shapes of the protrusions 4 include but are not limited to filaments and polygonal strips.

[0084] According to the above structure, the principle is:

[0085] Since the heat spreader 3 is provided with the protrusion 4, in Example 41, after the laser ice melting module 56 heats the heat spreader 3, the heat is transferred to other positions on the surface of the wind turbine blade 2 through the protrusion 4. The bottom of the ice layer can be heated by the protrusion 4, and the ice layer can be quickly shed through the closed partition of the heat spreader 3 and the protrusion 4. In addition, during the heating process of the protrusion 4, a part of the water melted will be heated by the microwave ice melting module 55, so that the ice layer will melt and fall off faster.

[0086] Please refer to Figure 7 and Fig. 9 The base 5 is used to install the ice monitoring module and the de-icing module. The base 5 is installed on the wind turbine generator set 1, and the base 5 and the wind turbine generator set 1 are universally adjustable.

[0087] The specific universal adjustment is achieved through the following structure. The base 5 includes a mounting seat 51 for fixed installation with the wind turbine generator set 1. The first platform 52 is installed in the mounting seat 51, and the second platform 53 and the third platform 54 are driven in turn by the steering gear assembly. The hinge direction between the third platform 54 and the second platform 53 is perpendicular to the hinge direction between the second platform 53 and the first platform 52. The microwave ice melting module 55, the laser ice melting module 56, the radar ice meter 57 and the laser ice meter 58 are fixedly installed on the outer surface of the third platform 54. The ice detection module includes the radar ice meter 57 and the laser ice meter 58.

[0088] Furthermore, the servo assembly is set as two groups, one of which is installed between the first platform 52 and the second platform 53, and transmits two first gears 59 through the first servo 61, and drives the second platform 53 to be hinged on one side of the first platform 52 through the rotating shaft; the other group is installed between the second platform 53 and the third platform 54, and transmits two second gears 60 through the second servo 62, and drives the third platform 54 to be hinged on one side of the second platform 53 through the rotating shaft. In addition, a power control module 63 is set at the bottom of the first platform 52 and inside the mounting seat 51, which is used to provide driving power for the first servo 61 and the second servo 62.

[0089] The above is only a preferred embodiment of the present invention. It should be noted that, for those skilled in the art, several improvements and modifications can be made without departing from the principles of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the art unless otherwise specified and limited.

Claims

1. A real-time deicing method for a wind turbine, characterized in that: The steps include: Obtaining the position parameters between the wind turbine blade rotation path, the ice detection module and the deicing module; Test the icing threshold of wind turbine blades, and detect environmental parameters based on the icing threshold to determine whether to start the icing detection module and de-icing module; When the icing threshold is reached, the system starts the ice detection module to obtain the blade icing status, and starts the deicing module after the blade rotation cycle reaches the deicing module working range; The deicing method of the deicing module comprises the following steps: The de-icing module acts on the rotating blades of the wind turbine to de-ice the inspected ice layer; The de-icing module is started to melt ice on the rotating blades; Repeat the above steps, and when the ice detection module detects no ice layer, remove the ice layer on the wind turbine blades in a circular outward direction.

2. A real-time deicing method for a wind turbine according to claim 1, characterized in that: The wind turbine blades rotate to form a circular path, and the ice detection module and the de-icing module spread outward in a circular shape corresponding to the center of the circle.

3. A real-time deicing method for a wind turbine according to claim 1, characterized in that: The ice detection module includes a variety of devices for detecting ice thickness and ice distribution through reflected waves, and a system for connecting and operating the ice detection module and the de-icing module.

4. A real-time deicing method for a wind turbine according to claim 3, characterized in that: The ice coating detection module detects ice layer by focusing detection through at least two reflected wave detection devices.

5. A real-time deicing system for a wind turbine generator, using the real-time deicing method for a wind turbine generator as claimed in any one of claims 1 to 4, characterized in that: include A set of power control modules and an icing detection module, a deicing module and a microprocessor electrically connected to the power control module; The microprocessor is also electrically connected to a data acquisition system, a wireless alarm system and a communication system; Wherein, the microprocessor processes the ice layer data detected by the ice detection module, generates a de-icing execution signal and transmits it to the de-icing module and the power control module; The power control module is electrically connected to the wind turbine generator set.

6. A real-time deicing device for a wind turbine generator, using the real-time deicing system for a wind turbine generator as claimed in claim 5, characterized in that: It consists of an ice detection module, a deicing module and a base; The ice detection module includes at least one laser ice detector and at least one radar ice detector.

7. A real-time deicing device for a wind turbine generator according to claim 6, characterized in that: The deicing module includes at least one group of laser ice-melting modules and at least one group of microwave ice-melting modules.

8. A real-time deicing device for a wind turbine generator according to claim 7, characterized in that: A group of laser ice melting modules work on the blade surface and are coupled with an annular heat sink; The vapor chamber is provided with a protrusion on the side away from the rotating shaft of the wind turbine blade, and the protrusion extends to one side of another group of vapor chambers in the vapor chamber annular diffusion array.

9. A real-time deicing device for a wind turbine generator according to claim 6, characterized in that: The base is used to install an ice monitoring module and an ice removal module. The base is installed on a wind turbine generator set, and the base and the wind turbine generator set are universally adjustable.

10. A real-time deicing device for a wind turbine generator according to claim 7, characterized in that: The base includes a mounting seat for fixed installation with a wind turbine generator set, a first platform is installed in the mounting seat, and the second platform and the third platform are driven in sequence through the steering gear assembly, and the hinge direction between the third platform and the second platform is perpendicular to the hinge direction between the second platform and the first platform, and the microwave ice melting module, the laser ice melting module, the radar ice meter and the laser ice meter are fixedly installed on the outer surface of the third platform.

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