Wind turbine blade curing device

Abstract

The application provides a wind power blade curing device, and belongs to the technical field of wind power, and comprises: a microwave shielding device; a tool support; a microwave magnetron group for generating microwaves; a microwave application surface array comprising a plurality of microwave application units, the configuration of the curved surface formed by the plurality of microwave application units is matched with the surface configuration of the reinforcing area of the wind power blade, and the microwave application surface array is used for applying microwaves on the wind power blade; a microwave magnetron control device for controlling the microwave generation power of the microwave magnetron group according to a power control signal; a temperature detection device for detecting the temperature of the reinforcing area of the wind power blade; and a curing control device for determining the microwave generation power of the microwave magnetron group according to the temperature of the reinforcing area of the wind power blade and generating a power control signal. Through the device provided by the application, the blade curing efficiency can be improved, the curing period can be reduced, the influence of the environmental temperature can be reduced, and the curing quality of the wind power blade can be improved.

Description

Technical Field

[0001] This invention relates to the field of wind power technology, and more specifically, to a wind turbine blade curing device. Background Technology

[0002] Wind energy, as a pollution-free and renewable new energy source, has enormous development potential, especially in coastal islands, remote mountainous areas with inconvenient transportation, sparsely populated grasslands and pastures, and rural and border areas far from the power grid or difficult for the power grid to reach in the near future. As a reliable way to solve the energy problems of production and life, it is of great significance.

[0003] After years of rapid development, wind power generation technology has reached the megawatt level, and wind turbine blades play a crucial role in this technology. With a large existing stock of wind turbine blades nationwide, the demand for maintenance and structural modification of both new and old blades is constantly increasing, and blade manufacturers are paying more and more attention to blade production efficiency. Resins and composite materials are used in the production, maintenance, and structural modification of these blades, and to ensure product quality, the resin needs to achieve a good curing effect.

[0004] In existing technologies, wind turbine blades have always been cured by heat conduction, such as electric mold heating, water mold temperature controller heating, electric blanket heating, and hot air blower heating, with a curing time of 5-7 hours. This method has low heating efficiency, long curing cycle, and is easily affected by ambient temperature. In particular, the insulation effect is poor in the low-temperature environment of the wind farm, making it difficult to reach the temperature required for the curing process, and thus the product quality is difficult to guarantee. Summary of the Invention

[0005] To address the technical problems of low heating efficiency, long curing cycle, and difficulty in guaranteeing product quality in existing wind turbine blades, this invention provides a wind turbine blade curing device. Using this device can improve blade curing efficiency, reduce curing cycle, reduce the influence of ambient temperature, and improve the curing quality of wind turbine blades.

[0006] To achieve the above objectives, the wind turbine blade curing device provided by the present invention includes: a microwave shielding device, which is a cavity structure with a closed shielding cavity; a tooling bracket disposed within the shielding cavity of the microwave shielding device; a microwave magnetron assembly for generating microwaves; a microwave application array fixed on the tooling bracket and connected to the microwave magnetron assembly, the microwave application array including multiple microwave application units, the curved surface configuration formed by the multiple microwave application units matching the surface configuration of the reinforced area of ​​the wind turbine blade, the microwave application array for receiving microwaves generated by the microwave magnetron assembly and applying microwaves to the wind turbine blade; a microwave magnetron control device connected to the microwave magnetron assembly for controlling the microwave generating power of the microwave magnetron assembly according to a power control signal; a temperature detection device disposed within the shielding cavity for detecting the temperature of the reinforced area of ​​the wind turbine blade; and a curing control device connected to the temperature detection device and the microwave magnetron control device for determining the microwave generating power of the microwave magnetron assembly based on the temperature of the reinforced area of ​​the wind turbine blade and generating the power control signal.

[0007] Furthermore, multiple microwave application units are arranged in a rectangular, rhomboid, or ring shape.

[0008] Furthermore, multiple microwave application units are arranged in a diamond shape.

[0009] Furthermore, the minimum interior angle of the rhombus is 45°.

[0010] Furthermore, the side length of the rhombus is between 60-80mm.

[0011] Furthermore, the microwave magnetron assembly includes multiple independent magnetrons, each of which is connected to a microwave application unit.

[0012] Furthermore, the temperature detection device is an infrared temperature detection device.

[0013] Furthermore, the curing control device is a programmable logic controller.

[0014] Furthermore, the microwave shielding device is a detachable structure.

[0015] Furthermore, the microwave magnetron control device is a single-phase controllable thyristor power regulator.

[0016] The present invention has at least the following technical effects through the technical solution provided by the present invention:

[0017] The wind turbine blade curing device of the present invention includes a microwave shielding device, a tooling bracket, a microwave magnetron assembly, a microwave application array, a microwave magnetron control device, a temperature detection device, and a curing control device. The microwave shielding device has a closed shielding cavity. The tooling bracket is disposed within the shielding cavity of the microwave shielding device. The microwave application array is fixed on the tooling bracket and connected to the microwave magnetron assembly. The microwave application array includes multiple microwave application units, and the curved surface configuration formed by the multiple microwave application units matches the surface configuration of the reinforcement area of ​​the wind turbine blade. The microwave application array is used to receive microwaves generated by the microwave magnetron assembly and apply the microwaves to the wind turbine blade. The temperature detection device is disposed within the shielding cavity and detects the temperature of the reinforcement area of ​​the wind turbine blade during blade curing, generates a temperature signal, and sends the temperature signal to the curing control device. The curing control device determines the temperature of the reinforcement area of ​​the wind turbine blade based on the temperature signal, then determines the microwave generation power of the microwave magnetron assembly and generates a power control signal, which is sent to the microwave magnetron control device. The microwave magnetron control device controls the microwave generation power of the microwave magnetron assembly. The device provided by this invention can control the power of the microwave magnetron according to the current temperature of the blade, thereby improving the curing efficiency of the blade, reducing the curing cycle, reducing the influence of ambient temperature, and improving the curing quality of wind turbine blades.

[0018] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0019] The accompanying drawings are provided to further illustrate embodiments of the present invention and form part of the specification. They are used together with the following detailed description to explain the embodiments of the present invention, but do not constitute a limitation thereof. In the drawings:

[0020] Figure 1 This is an overall schematic diagram of the wind turbine blade curing device provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the tooling bracket in the wind turbine blade curing device provided in an embodiment of the present invention. Detailed Implementation

[0022] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the scope of the present invention.

[0023] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0024] In this invention, unless otherwise stated, directional terms such as "upper," "lower," "top," and "bottom" are generally used to describe the relative positions of components in relation to the directions shown in the accompanying drawings or in relation to the vertical, perpendicular, or gravitational directions.

[0025] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0026] Please refer to Figure 1 and Figure 2 This invention provides a wind turbine blade curing device, comprising: a microwave shielding device, which is a cavity-type structure with a closed shielding cavity; a tooling bracket disposed within the shielding cavity of the microwave shielding device; a microwave magnetron assembly for generating microwaves; a microwave application array fixed on the tooling bracket and connected to the microwave magnetron assembly, the microwave application array comprising multiple microwave application units, the curved surface configuration formed by the multiple microwave application units matching the surface configuration of the reinforced area of ​​the wind turbine blade, the microwave application array for receiving microwaves generated by the microwave magnetron assembly and applying microwaves to the wind turbine blade; a microwave magnetron control device connected to the microwave magnetron assembly for controlling the microwave generating power of the microwave magnetron assembly according to a power control signal; a temperature detection device disposed within the shielding cavity for detecting the temperature of the reinforced area of ​​the wind turbine blade; and a curing control device connected to the temperature detection device and the microwave magnetron control device for determining the microwave generating power of the microwave magnetron assembly based on the temperature of the reinforced area of ​​the wind turbine blade and generating the power control signal.

[0027] Specifically, in this embodiment of the invention, a microwave shielding device, a tooling bracket, a microwave magnetron assembly, a microwave application array, a microwave magnetron control device, a temperature detection device, and a curing control device are included. The microwave shielding device has a cavity structure with a closed shielding cavity. The tooling bracket is disposed within the shielding cavity of the microwave shielding device. The microwave application array is fixed on the tooling bracket and connected to the microwave magnetron assembly. The microwave application array includes multiple microwave application units arranged to form a curved surface. The configuration of this curved surface matches the surface configuration of the reinforced area of ​​the wind turbine blade. The microwave application array is used to receive microwaves generated by the microwave magnetron assembly and apply them to the wind turbine blade. The temperature detection device is disposed within the shielding cavity. During blade curing, it detects the temperature of the reinforced area of ​​the wind turbine blade, generates a temperature signal, and sends the temperature signal to the curing control device. The curing control device determines the temperature of the reinforced area of ​​the wind turbine blade based on the temperature signal, then determines the microwave generation power of the microwave magnetron assembly and generates a power control signal, which is sent to the microwave magnetron control device. The microwave magnetron control device controls the microwave generation power of the microwave magnetron assembly.

[0028] During blade reinforcement, a microwave application array is fixed on a tooling bracket and arranged to match the curved surface of the reinforcement area of ​​the wind turbine blade. Approaching the wind turbine blade, the microwave magnetron assembly generates microwaves, which are applied to the blade via the application array. Simultaneously, a temperature detection device monitors the blade temperature, generating a temperature signal which is sent to the curing control device. The temperature is controlled within a set range of 50℃-200℃. If the detected temperature is outside the set range, the curing control device determines the microwave power of the magnetron assembly based on the current temperature. If the current wind turbine blade temperature is higher than the set range, the microwave power is reduced; if the current wind turbine blade temperature is lower than the set range, the microwave power is increased. A power control signal is generated and sent to the microwave magnetron control device. The microwave magnetron control device controls the microwave power of the magnetron assembly based on the power control signal, thereby adjusting the power of the microwaves applied to the wind turbine blade by the application array, thus changing the curing temperature of the wind turbine blade.

[0029] The device provided by this invention can control the power of the microwave magnetron according to the current temperature of the blade, thereby improving the curing efficiency of the blade, reducing the curing cycle, reducing the influence of ambient temperature, and improving the curing quality of wind turbine blades.

[0030] Furthermore, multiple microwave application units are arranged in a rectangular, rhomboid, or ring shape.

[0031] Furthermore, the minimum interior angle of the rhombus is 45°.

[0032] Furthermore, the side length of the rhombus is between 60-80mm.

[0033] Specifically, in this embodiment of the invention, the microwave application units are arranged in a rectangular, rhomboid, or annular pattern. Preferably, multiple microwave application units are arranged in a rhomboid pattern, with the smallest interior angle of the rhombus being 45° and the side length of the rhombus being between 60-80 mm. This arrangement of the microwave application units enables rapid heating of the wind turbine blades, shortens the curing time of the wind turbine blades, improves the heating efficiency of the microwave application units, and reduces energy consumption. Further, the microwave application array, from bottom to top, includes a silicone sealing layer, a microwave application unit layer, a flexible shaping layer, and a shielding layer. The microwave application unit layer includes multiple microwave application units. The silicone sealing layer is 5 mm-50 mm thick silicone and is used to provide dustproof sealing for the microwave application unit layer. The flexible shaping layer can move flexibly and be shaped at any curvature to change the curvature of the microwave application array to adapt to the curved surface configuration of the wind turbine blade. In one possible embodiment, the flexible shaping layer is composed of a soft leather and a metal mesh composite. The shielding layer is disposed on the outermost layer of the microwave application array to shield against leaked microwaves.

[0034] Furthermore, the microwave magnetron assembly includes multiple independent magnetrons, each of which is connected to a microwave application unit.

[0035] Specifically, in this embodiment of the invention, the microwave magnetron assembly includes multiple independent magnetrons, each connected to a microwave application unit. The microwave magnetron control device can individually control the microwave generation power of each independent magnetron. During the curing of wind turbine blades, the temperature detection device can detect the temperature at multiple points in the curing area. If one point is outside the set temperature range, the curing control device determines the microwave generation power of the independent magnetron corresponding to that point and controls the microwave generation power of that independent magnetron through the microwave magnetron control device, thereby adjusting the microwave power applied to that point by the corresponding microwave application unit.

[0036] The wind turbine blade curing device provided by the present invention can individually adjust the microwave applied to the wind turbine blade by the microwave application unit, adjust the curing temperature of the wind turbine blade in different areas, and improve the curing quality of the blade.

[0037] Furthermore, the temperature detection device is an infrared temperature detection device.

[0038] Specifically, the temperature detection device includes multiple infrared thermopile sensors of model A2TPMI334-L5.5 OAA 300. The infrared thermopile sensors are evenly distributed within the shielded cavity, with a spacing of 100-200mm between them.

[0039] Furthermore, the curing control device is a programmable logic controller.

[0040] Specifically, in this embodiment of the invention, the curing control device uses a Siemens S7200 series PLC.

[0041] Furthermore, the microwave shielding device is a detachable structure.

[0042] Specifically, in this embodiment of the invention, the microwave shielding device is a separate, detachable structure that can be set up at any time on-site at the wind farm, effectively preventing microwave radiation leakage and ensuring that microwave leakage is ≤5mW / cm². 2 .

[0043] Furthermore, the tooling support includes a base support, a connector, and a fixing component. The fixing component is connected to the base support via the connector. The base support is placed on the ground. The connector is a universal connector. The fixing component can be moved and adjusted in three dimensions with the base support as a reference via the connector. The microwave application array is fixed on the fixing component. In one possible embodiment, the connector is a track-type connector, consisting of at least three tracks in three dimensions, capable of moving and adjusting in three dimensions with the base support as a reference. Furthermore, the fixing component is a flexible and deformable structure. The fixing component includes multiple fixing components. Each microwave application unit is fixed to one fixing component. Adjacent fixing components are connected by hinges. The hinges can change the relative position between the microwave application units, thereby changing the arrangement shape of the microwave application array to adapt to the surface configuration of the wind turbine blade's reinforcement area.

[0044] Please refer to Figure 2 The tooling support includes a base support 1, connecting parts, and fixing components 3. The connecting parts include a vertical rod 201, a rotating shaft 202, and a horizontal rod 203. The horizontal rod 203 rotates around the vertical rod 201 about the rotating shaft 202. A fixing rod 204 is respectively provided on the vertical rod 201 and the horizontal rod 203. The fixing component 3 is located between the two fixing rods 204, and tracks are provided on the two fixing rods 204, allowing the fixing component 3 to slide along the tracks. Tracks are also provided on the vertical rod 201 and the horizontal rod 203, allowing the two fixing rods 204 to slide along the tracks respectively, thereby changing the position of the fixing component 3.

[0045] Furthermore, the microwave magnetron control device is a single-phase controllable thyristor power regulator.

[0046] The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

[0047] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not describe the various possible combinations separately.

[0048] Furthermore, various different embodiments of the present invention can be combined in any way, as long as they do not violate the spirit of the present invention, they should also be regarded as the content disclosed by the present invention.

Claims

1. A wind turbine blade curing device, characterized in that, The wind turbine blade curing device includes: A microwave shielding device, wherein the microwave shielding device has a cavity structure and has a closed shielding cavity; A fixture support is disposed within the shielding cavity of the microwave shielding device. The fixture support is disposed independently of the inner wall of the microwave shielding device. The fixture support includes a base support, a connector, and a fixing component. The fixing component is connected to the base support through the connector. The connector is a universal connector or a rail-type connector. The fixing component can be moved and adjusted in three dimensions with the base support as a reference through the connector. Microwave magnetron assembly, used to generate microwaves; The microwave application array is fixedly supported by the tooling bracket, fixed to the fixing component of the tooling bracket and connected to the microwave magnetron assembly. The microwave application array includes multiple microwave application units. The curved surface configuration formed by the multiple microwave application units matches the surface configuration of the reinforcement area of ​​the wind turbine blade. The microwave application array is used to receive microwaves generated by the microwave magnetron assembly and apply the microwaves to the wind turbine blade. A microwave magnetron control device is connected to the microwave magnetron group and is used to control the microwave generating power of the microwave magnetron group according to a power control signal. A temperature detection device is installed inside the shielding cavity to detect the temperature of the reinforced area of ​​the wind turbine blade; the temperature detection device includes multiple infrared temperature sensors, which are evenly distributed inside the shielding cavity, with a spacing of 100-200mm between them. A curing control device, connected to the temperature detection device and the microwave magnetron control device, is used to determine the microwave generating power of the microwave magnetron group based on the temperature of the reinforced area of ​​the wind turbine blade and generate the power control signal.

2. The wind turbine blade curing device according to claim 1, characterized in that, Multiple microwave application units are arranged in a rectangular, rhomboid, or ring shape.

3. The wind turbine blade curing device according to claim 2, characterized in that, Multiple microwave application units are arranged in a diamond shape.

4. The wind turbine blade curing device according to claim 3, characterized in that, The minimum interior angle of the rhombus is 45°.

5. The wind turbine blade curing device according to claim 3, characterized in that, The side length of the rhombus is between 60-80mm.

6. The wind turbine blade curing device according to claim 1, characterized in that, The microwave magnetron group includes multiple independent magnetrons, each of which is connected to a microwave application unit.

7. The wind turbine blade curing device according to claim 1, characterized in that, The curing control device is a programmable logic controller.

8. The wind turbine blade curing device according to claim 1, characterized in that, The microwave shielding device is a detachable structure.

9. The wind turbine blade curing device according to claim 1, characterized in that, The microwave magnetron control device is a single-phase controllable thyristor power regulator.

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