Wind turbine generator system, blade, and pneumatic accessory and manufacturing method therefor

Abstract

A wind turbine generator system (100), a blade (10), and a pneumatic accessory (11) and a manufacturing method therefor. The pneumatic accessory (11) comprises a thermoplastic member (111) and a conductive member (112), wherein the thermoplastic member (111) is configured to produce plastic deformation when heated; and the conductive member (112) is contactingly connected to the thermoplastic member (111), the conductive member (112) being configured to generate heat when energized. The wind turbine generator system (100) comprises blades, wherein the pneumatic accessory (11) is connected to the surface of a blade body. The pneumatic accessory (11) facilitates changes to the shape thereof, enabling the pneumatic accessory (11) to be easily mounted on a blade body, while also helping improve the reliability of the connection between the pneumatic accessory (11) and the blade body.

Description

Wind turbine generator set, blade, pneumatic accessories and manufacturing method thereof

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202311377551.5, filed on October 23, 2023, entitled “Wind turbine generator set, blades, aerodynamic accessories and manufacturing methods thereof,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application belongs to the field of wind power technology, and in particular relates to a wind turbine generator set, blades, aerodynamic accessories and a manufacturing method thereof. Background Art

[0004] Wind energy is a clean, renewable energy source. With the increasing global energy shortage, its importance is growing. Countries around the world are continuously increasing their research and application of wind resources. Wind turbines, essential for converting wind energy into electricity, are widely used both domestically and internationally. Wind turbine blades, the primary component for converting wind energy into kinetic energy, typically include specially shaped aerodynamic attachments on their outer surfaces to enhance aerodynamic performance and reduce noise.

[0005] After the pneumatic accessories are processed and formed, their appearance cannot be changed, or the modification process is complicated. Therefore, there is an urgent need for a pneumatic accessory that is easy to modify.

[0006] Summary of the Invention

[0007] The embodiments of the present application provide a wind turbine generator set, blades, aerodynamic accessories and manufacturing methods thereof, which facilitate the modification of aerodynamic accessories.

[0008] In a first aspect, the present application provides a pneumatic accessory, which includes a thermoplastic part and a conductive part; the thermoplastic part is configured to produce plastic deformation when heated; the conductive part is in contact with the thermoplastic part, and the conductive part is configured to generate heat when powered.

[0009] In some embodiments, the thermoplastic member has a receiving cavity, and the conductive member is at least partially filled in the receiving cavity.

[0010] In some embodiments, the pneumatic accessory comprises a plurality of thermoplastic parts connected by fusion bonding.

[0011] In some embodiments, each thermoplastic member is in contact with at least one conductive member.

[0012] In some embodiments, the material of the thermoplastic member includes at least one of polymethyl methacrylate, polybutylene terephthalate, polyethylene, polyvinyl chloride, polystyrene, polyamide, polyoxymethylene, polycarbonate, polyphenylene oxide, polysulfone, and rubber.

[0013] In a second aspect, an embodiment of the present application is a blade comprising at least one aerodynamic attachment provided by any of the above embodiments and a blade body, wherein the aerodynamic attachment is connected to the surface of the blade body.

[0014] In some embodiments, the aerodynamic attachment is welded to the surface of the blade body.

[0015] In some embodiments, the blade body includes opposing windward and leeward surfaces, leading and trailing edges opposing each other along the chord direction of the blade; at least one aerodynamic attachment is connected to the windward surface; and / or at least one aerodynamic attachment is connected to the trailing edge.

[0016] In a third aspect, an embodiment of the present application provides a wind turbine generator set, comprising the blades provided by any of the above embodiments.

[0017] In a fourth aspect, an embodiment of the present application provides a method for manufacturing a pneumatic accessory, comprising: obtaining a thermoplastic part and a conductive part, the conductive part being in contact with and connected to the thermoplastic part, the conductive part being configured to generate heat when energized, and the thermoplastic part being configured to generate plastic deformation when heated; energizing the conductive part, and pressurizing the thermoplastic part using a preset die to obtain a pneumatic accessory of a preset shape.

[0018] In some embodiments, obtaining a thermoplastic part and a conductive part includes: laying out fibers and a conductive part in a mold, and introducing a liquid thermoplastic material into the mold; heating the mold, causing the fibers and the liquid thermoplastic material to chemically react to form a solid thermoplastic part, and the conductive part is in contact with and connected to the thermoplastic part.

[0019] In some embodiments, laying out fibers and conductive elements in a mold and introducing liquid thermoplastic material into the mold includes: laying out fibers and conductive elements in the mold; and introducing liquid thermoplastic material into the mold.

[0020] In some embodiments, laying out fibers and conductive elements in a mold and introducing liquid thermoplastic material into the mold includes: pre-impregnating the liquid thermoplastic material into the fibers; and laying out the conductive elements and fibers pre-impregnated with the thermoplastic material into the mold.

[0021] The wind turbine generator set, blades, pneumatic accessories and manufacturing methods provided in the embodiments of the present application are configured such that the pneumatic accessories include thermoplastic parts and conductive parts, so that when the conductive parts are energized, the thermoplastic parts are heated by the heat generated by the conductive parts, and the shape of the pneumatic accessories is reshaped when the thermoplastic parts are molten. This is beneficial to improving the convenience of modifying the pneumatic accessories, facilitating the installation of the pneumatic accessories and the blade body, simplifying the installation process and connection structure of the pneumatic accessories and the blade body, and improving the connection reliability of the pneumatic accessories and the blade body. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0023] FIG1 is a schematic structural diagram of a pneumatic accessory provided in an embodiment of the present application;

[0024] FIG2 is a schematic cross-sectional view of a pneumatic accessory according to an embodiment of the present application;

[0025] FIG3 is a schematic diagram of the molding structure of the pneumatic accessory provided in an embodiment of the present application;

[0026] FIG4 is a schematic cross-sectional view of a blade according to an embodiment of the present application;

[0027] FIG5 is a schematic structural diagram of a wind turbine generator set provided in an embodiment of the present application;

[0028] FIG6 is a flow chart of a method for manufacturing a pneumatic accessory according to an embodiment of the present application;

[0029] FIG7 is a flow chart of another method for manufacturing a pneumatic accessory provided in an embodiment of the present application;

[0030] FIG8 is a flow chart of another method for manufacturing a pneumatic accessory provided in an embodiment of the present application;

[0031] FIG9 is a flow chart of another method for manufacturing a pneumatic accessory provided in an embodiment of the present application.

[0032] In the drawings, the figures are not necessarily drawn to scale.

[0033] The accompanying drawings in the specific implementation manner are as follows:

[0034] 10. Leaves;

[0035] 11. Pneumatic accessories; 111. Thermoplastic parts; 111a. Accommodating cavity; 112. Conductive parts;

[0036] 12. Blade body; 12a. Windward side; 12b. Leeward side; 12c. Leading edge; 12d. Trailing edge;

[0037] 20. Die pressing;

[0038] 100. Wind turbine. DETAILED DESCRIPTION

[0039] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0040] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are for the purpose of describing specific embodiments only and are not intended to limit this application. The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "first" and "second" in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary-secondary relationship.

[0041] References to "embodiments" in this application mean that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments.

[0042] In the description of this application, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," "connected," and "attached" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to direct connections, indirect connections through an intermediate medium, or internal connections between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0043] The term "and / or" in this application simply describes the relationship between related objects, indicating that three possible relationships exist. For example, C and / or D can mean: C exists alone, C and D exist simultaneously, or D exists alone. In addition, the character " / " in this application generally indicates that the related objects are in an "or" relationship.

[0044] In the embodiments of this application, the same reference numerals represent the same components, and for the sake of brevity, detailed descriptions of the same components in different embodiments are omitted. It should be understood that the thickness, length, width, and other dimensions of the various components in the embodiments of this application, as well as the overall thickness, length, width, and other dimensions of the integrated device shown in the drawings are merely illustrative and should not constitute any limitation on this application.

[0045] The term "plurality" used in this application refers to two or more (including two).

[0046] Common aerodynamic accessory structures include spoilers, vortex generators, and serrated trailing edges. Spoilers are typically used to improve gas flow separation at the blade root, delaying stall and improving wind energy utilization. Vortex generators typically inject energy into the boundary layer through the vortex system they generate, delaying flow separation, delaying stall, and increasing the lift coefficient of rough blades to compensate for power generation losses. This effectively delays or postpones the separation of the flow layer on the blade surface, improving the blade's ability to capture wind energy. Noise-reducing serrated edges are typically used to reduce blade noise.

[0047] Because different wind farms have different wind resources, the airflow on the surface of the blades is also different. In order to achieve the best power generation efficiency and improve the aerodynamic performance of the wind turbine, it is usually necessary to design pneumatic accessories of different specifications and shapes. In addition, during the installation process, the pneumatic accessories usually need to be modified according to the specific installation location to adapt to the specific shape of the blade. Pneumatic accessories are usually made of plastic products or epoxy fiberglass materials through injection molding or vacuum infusion. Injection molding requires the opening of corresponding molds, and once formed, it cannot be changed. Infusion molding can only form simple shapes. It requires a combination of multiple processes to form a pneumatic accessory of a specific shape, and the process is complicated. It can be seen that the production process of pneumatic accessories in related technologies is relatively complicated. Once formed, it cannot be changed, or the modification cost is high.

[0048] In view of this, embodiments of the present application provide a pneumatic accessory, a blade using the pneumatic accessory, a wind turbine generator set using the blade, and a method for manufacturing the pneumatic accessory to improve the convenience of modifying the pneumatic accessory.

[0049] In a first aspect, as shown in Figures 1, 3, and 4, a pneumatic accessory 11 according to an embodiment of the present application includes a thermoplastic member 111 and a conductive member 112. The thermoplastic member 111 is configured to undergo plastic deformation when heated. The conductive member 112 is connected to the thermoplastic member 111 and is configured to generate heat when energized.

[0050] The thermoplastic part 111 may soften upon heating and harden upon cooling, and may not undergo a chemical reaction during the heating process. After repeated heating and cooling, the thermoplastic part 111 may maintain the softening upon heating and hardening properties. Optionally, the thermoplastic part 111 may be formed by injection molding or perfusion molding.

[0051] The conductive member 112 may comprise a metallic material such as copper. The conductive member 112 is in contact with and connected to the thermoplastic member 111. Alternatively, the conductive member 112 may be disposed within the thermoplastic member 111. For example, during the injection molding process of the thermoplastic member 111, the conductive member 112 is placed within the thermoplastic member 111. After the thermoplastic member 111 is cured, the conductive member 112 is located within the thermoplastic member 111. It is understood that a portion of the conductive member 112 may be exposed outside the thermoplastic member 111 to facilitate connection between the conductive member 112 and an external circuit.

[0052] The conductive member 112 can generate heat when energized. The conductive member 112 can be connected to an external circuit to generate heat. This heat is then transferred to the thermoplastic member 111. When the heat in the thermoplastic member 111 reaches a certain level, the thermoplastic member 111 melts and undergoes plastic deformation. At this point, a die 20 of a specific shape can be used to apply pressure to the thermoplastic member 111 to form the pneumatic accessory 11 into a corresponding shape.

[0053] Therefore, the specific shape of the thermoplastic part 111 can be set as needed, and the installation position and number of the conductive parts 112 on the thermoplastic part 111 can be set as needed. For example, multiple conductive parts 112 can be set at different positions of a thermoplastic part 111, so that different positions of the thermoplastic part 111 can be modified when the conductive parts 112 are energized.

[0054] The conductive member 112 may be in the form of a wire, a strip, a mesh, or a sheet, or the long conductive member 112 may be coiled into a disk shape to increase the contact area between the conductive member 112 and the thermoplastic member 111 .

[0055] In addition, during the process of installing the pneumatic accessory 11 on the blade body 12 of the blade 10, the heat generated by the conductive part 112 can be conducted to the thermoplastic part 111 by energizing the conductive part 112. The thermoplastic part 111 melts due to the heat, and pressure is applied to the pneumatic accessory 11. The pneumatic accessory 11 can be welded to the surface of the blade body 12. In this way, a relatively firm connection between the pneumatic accessory 11 and the blade body 12 can be achieved without the use of structures such as bolts, and without destroying the structure of the blade body 12. This is conducive to simplifying the installation process and connection structure of the blade body 12 and the pneumatic accessory 11, and is conducive to improving the installation reliability of the blade body 12 and the pneumatic accessory 11.

[0056] The pneumatic accessory 11 provided in the embodiment of the present application is configured such that the pneumatic accessory 11 includes a thermoplastic part 111 and a conductive part 112. When the conductive part 112 is energized, the heat generated by the conductive part 112 heats the thermoplastic part 111, and the shape of the pneumatic accessory 11 is reshaped when the thermoplastic part 111 is molten. This is beneficial to improving the convenience of modifying the pneumatic accessory 11, facilitating the installation of the pneumatic accessory 11 and the blade body 12, simplifying the installation process and connection structure of the pneumatic accessory 11 and the blade body 12, and improving the connection reliability of the pneumatic accessory 11 and the blade body 12.

[0057] As shown in FIG. 2 , in some embodiments, the thermoplastic member 111 has a receiving cavity 111 a , and at least a portion of the conductive member 112 is filled in the receiving cavity 111 a .

[0058] The accommodating cavity 111a can be a chamber, or the conductive member 112 can be formed inside the thermoplastic member 111 by laying out the raw materials of the thermoplastic member 111 together and then plasticizing the thermoplastic member 111. In this way, the space inside the thermoplastic member 111 occupied by the conductive member 112 can serve as the accommodating cavity 111a. Therefore, in this embodiment, the accommodating cavity 111a of the thermoplastic member 111 can have any shape, and the conductive member 112 fills the interior of the thermoplastic member 111.

[0059] The accommodating cavity 111a can be provided on the surface of the thermoplastic member 111, or the accommodating cavity 111a can be formed inside the thermoplastic member 111. At least a portion of the conductive member 112 is filled in the accommodating cavity 111a. This helps to increase the contact area between the conductive member 112 and the thermoplastic member 111. When the conductive member 112 is energized, the rate at which heat generated by the conductive member 112 is transferred to the thermoplastic member 111 is increased, which helps to increase the melting rate of the thermoplastic member 111, further improving the efficiency of reshaping the thermoplastic member 111, or improving the connection efficiency between the pneumatic accessory 11 and the blade body 12.

[0060] In some embodiments, the pneumatic accessory 11 includes a plurality of thermoplastic parts 111 , and the plurality of thermoplastic parts 111 are connected by welding.

[0061] Specifically, the number of thermoplastic parts 111 of the pneumatic accessory 11 and the connection relationship between the thermoplastic parts 111 can be set as needed. If the multiple thermoplastic parts 111 are welded together, the conductive member 112 can be energized to melt at least part of the multiple thermoplastic parts 111 and connect them to each other.

[0062] Optionally, each thermoplastic part 111 can be arranged to be in contact with and connected to the conductive part 112, or only a portion of the multiple thermoplastic parts 111 can be arranged to be in contact with and connected to the conductive part 112, as needed. In this way, when the conductive part 112 is energized, only a portion of the thermoplastic parts 111 can be melted, that is, a portion of the multiple thermoplastic parts 111 can be modified, while the shape of the other portion remains unchanged.

[0063] Therefore, the pneumatic accessory 11 is configured to include multiple thermoplastic parts 111 , and the multiple thermoplastic parts 111 are fused and connected, so that the pneumatic accessory 11 can be configured to have more shapes as needed, so as to prepare a more complex appearance of the pneumatic accessory 11 .

[0064] In some embodiments, each thermoplastic member 111 is in contact with and connected to at least one conductive member 112 .

[0065] When the pneumatic accessory 11 includes multiple thermoplastic parts 111, each thermoplastic part 111 is in contact with and connected to at least one conductive part 112. The number of conductive parts 112 can be one, and one conductive part 112 is in contact with and connected to multiple thermoplastic parts 111 at the same time. Alternatively, the number of conductive parts 112 can be multiple, and each conductive part 112 is in contact with and connected to at least one thermoplastic part 111. In this way, when all the conductive parts 112 are energized, each thermoplastic part 111 can receive heat from the conductive part 112 and melt, that is, each thermoplastic part 111 can be modified.

[0066] When the pneumatic accessory 11 includes multiple conductive members 112, the multiple conductive members 112 can be connected in parallel. When the conductive members 112 are energized, the multiple conductive members 112 can all generate heat. Alternatively, the multiple conductive members 112 can be independent of each other, and at least one of the multiple conductive members 112 can be selectively energized to heat a specific thermoplastic member 111, thereby achieving modification of the specific thermoplastic member 111.

[0067] Therefore, arranging each thermoplastic part 111 to be in contact with at least one conductive part 112 is conducive to modifying one or more specific thermoplastic parts 111 as needed, and is conducive to improving the flexibility of reshaping the pneumatic accessory 11 .

[0068] In some embodiments, the material of the thermoplastic member 111 includes at least one of polymethyl methacrylate, polybutylene terephthalate, polyethylene, polyvinyl chloride, polystyrene, polyamide, polyoxymethylene, polycarbonate, polyphenylene oxide, polysulfone, and rubber.

[0069] Materials such as polymethyl methacrylate, polybutylene terephthalate, polyethylene, polyvinyl chloride, polystyrene, polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, polysulfone and rubber all have good thermoplasticity, that is, they have good properties of softening when heated and hardening when cooled, and no chemical reaction occurs during the heating process. They are also easy to process and shape, have high mechanical properties, low density, high strength, fast processing and are recyclable. They are high-performance, low-cost and green and environmentally friendly materials.

[0070] In a second aspect, as shown in FIG4 , a blade 10 provided according to an embodiment of the present application includes at least one aerodynamic attachment 11 and a blade body 12 as provided in any of the above embodiments, and the aerodynamic attachment 11 is connected to the surface of the blade body 12 .

[0071] When the pneumatic attachment 11 is used in the blade 10, the pneumatic attachment 11 can serve as a spoiler of the blade 10, or the pneumatic attachment 11 can serve as a vortex generator of the blade 10, or the pneumatic attachment 11 can serve as a noise reduction serration of the blade 10. Of course, part of the pneumatic attachment 11 can be set as a spoiler of the blade 10, part of the pneumatic attachment 11 can be set as a vortex generator of the blade 10, and another part can be set as a noise reduction serration of the blade 10.

[0072] According to the different functions of the pneumatic accessories 11 in the blade 10 , different pneumatic accessories 11 may have different structures and arrangements and be installed at different positions of the blade body 12 .

[0073] For example, the aerodynamic attachment 11 may be installed on the leading edge 12 c , the trailing edge 12 d , or the windward surface 12 a of the blade body 12 .

[0074] The pneumatic accessory 11 is connected to the surface of the blade body 12. Optionally, the pneumatic accessory 11 can be bonded to the surface of the blade body 12 or threaded to the surface of the blade body 12. Of course, the pneumatic accessory 11 can also be connected to the surface of the blade body 12 by melting the thermoplastic part 111.

[0075] The blade 10 provided in the embodiment of the present application adopts the pneumatic accessory 11 provided in the embodiment of the present application. During the process of modifying the pneumatic accessory 11 of the blade 10, the conductive part 112 can be energized and the heat generated by the conductive part 112 can be used to heat the thermoplastic part 111 so that the thermoplastic part 111 is in a molten state, and then the thermoplastic part 111 is reshaped. In this way, it is convenient to modify the pneumatic accessory 11, which is beneficial to improving the aerodynamic performance of the blade 10.

[0076] In some embodiments, the aerodynamic attachment 11 is welded to the surface of the blade body 12 .

[0077] Specifically, in the process of installing the pneumatic accessory 11 on the blade body 12, the corresponding conductive member 112 can be energized to heat the thermoplastic member 111 corresponding to the surface where the pneumatic accessory 11 and the blade body 12 are in contact. After the thermoplastic member 111 is melted, a die 20 of a specific shape is used to apply a certain pressure to the pneumatic accessory 11, and the thermoplastic member 111 is melted and connected to the surface of the blade body 12. After the thermoplastic member 111 is cooled, it is solidified and formed.

[0078] Arranging the pneumatic attachment 11 to be welded to the surface of the blade body 12 is beneficial to simplifying the connection structure and connection process between the pneumatic attachment 11 and the blade body 12 .

[0079] 4 , in some embodiments, the blade body 12 includes opposite windward and leeward surfaces 12a and 12b , and opposite leading and trailing edges 12c and 12d along the chord direction of the blade 10 . At least one aerodynamic attachment 11 is connected to the windward surface 12a .

[0080] Optionally, the aerodynamic attachment 11 may include a spoiler connected to the windward surface 12a of the blade 10 near the trailing edge 12d to improve the gas flow separation phenomenon at the root of the blade 10 and delay stall.

[0081] The aerodynamic attachment 11 may further include vortex generators. A plurality of vortex generators are arranged on the windward surface 12 a according to a certain rule and arranged in a specific shape to enhance the ability of the blade 10 to capture wind energy.

[0082] Of course, the aerodynamic attachment 11 may also include both a spoiler and a vortex generator, and the spoiler and the vortex generator may be respectively arranged at different positions on the windward surface 12 a of the blade body 12 .

[0083] Therefore, the windward surface 12 a is the windward surface of the blade 10 , and providing at least one aerodynamic attachment 11 connected to the windward surface 12 a is conducive to fully utilizing the function of the aerodynamic attachment 11 and improving the dynamic performance of the blade 10 .

[0084] In some embodiments, at least one aerodynamic attachment 11 is connected to the trailing edge 12d. In this case, the aerodynamic attachment 11 may be a noise reduction serration to reduce noise during operation of the blade 10.

[0085] In a third aspect, as shown in FIG5 , an embodiment of the present application provides a wind turbine generator set 100 , comprising the blade 10 provided in any one of the above embodiments.

[0086] The wind turbine generator set 100 provided in the embodiment of the present application includes the blades 10 provided in any of the above embodiments and thus has the same technical effects, which will not be described in detail here.

[0087] In a fourth aspect, as shown in FIG6 , an embodiment of the present application provides a method for manufacturing a pneumatic accessory, comprising:

[0088] S10, obtaining a thermoplastic component and a conductive component, wherein the conductive component is in contact with and connected to the thermoplastic component, the conductive component is configured to generate heat when energized, and the thermoplastic component is configured to generate plastic deformation when heated;

[0089] S20, energizing the conductive part and applying pressure to the thermoplastic part using a preset die to obtain a pneumatic accessory of a preset shape.

[0090] In step S10, the thermoplastic part 111 and the conductive part 112 are obtained, which can be the raw materials of the pneumatic accessory 11, that is, the thermoplastic part 111 and the conductive part 112 have not yet formed into a specific shape after preparation. At this time, after step S20, a new pneumatic accessory 11 is formed. Of course, the obtained thermoplastic part 111 and the conductive part 112 can also be the finished product of the pneumatic accessory 11, that is, the thermoplastic part 111 has been melted and formed into the shape of a specific pneumatic accessory 11. At this time, the process of step S20 is the process of reshaping the appearance of the pneumatic accessory 11, and the modified pneumatic accessory 11 is formed. In other words, the manufacturing method of the pneumatic accessory 11 provided in the embodiment of the present application can be used to prepare a new pneumatic accessory 11, and can also be used to reshape the already formed pneumatic accessory 11.

[0091] In step S10, the number of the obtained thermoplastic parts 111 and the number of the obtained conductive parts 112 can be one or more respectively. Correspondingly, in step S20, the conductive parts 112 are energized. One or more of the multiple conductive parts 112 can be energized at the same time, or at least some of the multiple conductive parts 112 can be energized in sequence to achieve the reshaping of the thermoplastic parts 111 that are in contact with the corresponding conductive parts 112.

[0092] When the thermoplastic part 111 is molten, a preset die 20 adapted to the shape of the desired pneumatic accessory 11 is used to pressurize the thermoplastic part 111 to form the thermoplastic part 111 of a preset shape, thereby forming the pneumatic accessory 11 of the preset shape.

[0093] In the method for manufacturing a pneumatic accessory provided in an embodiment of the present application, electricity is applied to the obtained thermoplastic part 111 and the conductive part 112. The heat generated by the conductive part 112 causes the thermoplastic part 111 in contact with it to melt. The molten thermoplastic part 111 is then pressurized by a preset die 20 to form a pneumatic accessory 11 of a specific shape. Therefore, the method for manufacturing a pneumatic accessory 11 provided in an embodiment of the present application can conveniently and quickly produce a pneumatic accessory 11 of a specific shape, and can also conveniently and quickly modify the pneumatic accessory 11.

[0094] As shown in FIG6 and FIG7 , in some embodiments, S10, obtaining a thermoplastic component and a conductive component, includes:

[0095] S21, laying out fibers and conductive members in the mold, and introducing liquid thermoplastic material into the mold;

[0096] S22. The mold is heated, and the fiber and the liquid thermoplastic material undergo a chemical reaction to form a solid thermoplastic part, and the conductive part is in contact with and connected to the thermoplastic part.

[0097] In step S21, the fibers and the conductive member 112 may be laid out in a mold first, and then the liquid thermoplastic material may be vacuum-infused into the mold. Alternatively, the thermoplastic material may be impregnated into the fibers, and then the fibers and the conductive member 112 may be laid out in the mold together, as desired.

[0098] It is understood that before proceeding to S21, the mold can be cleaned to remove dust, residue, and other foreign matter from the surface. Mold release agent should be applied three times to the mold surface in a spiral pattern. After each application, the mold surface should be left to stand naturally at room temperature for 15 to 20 minutes. A layer of gel coat should then be applied to the mold surface. The color of the gel coat should be determined based on the design. After a certain period of time, when the gel coat in the mold reaches a specified touch-dry state, the corresponding fibers and conductive elements 112 are then placed on the mold in sequence.

[0099] The fibers may be glass fibers, carbon fibers, or other fibers or mixed fibers. The conductive member 112 may be a metal strip, a metal mesh, or a metal sheet, or other conductive materials compatible with the resin.

[0100] It is understandable that other operations can be performed after step S21 and before step S22. For example, the excess burrs of the fiber can be removed, and auxiliary materials such as the guide net, glue injection tube, and glue injection port can be laid. A layer of breathing cotton can be laid around the outline of the fiber at a distance of 5 to 10 cm, and a piece of breathing cotton can be placed every 100 mm to overlap and evacuate. Use vacuum film and vacuum tape to seal the two layers of vacuum, start the vacuum pump, and after evacuating to the specified vacuum value, test the vacuum drop within a certain period of time. After the vacuum meets certain requirements, proceed to step S22.

[0101] In step S22 , the liquid thermoplastic material is a small molecule material. The mold is heated, and the fibers and the thermoplastic material react chemically to generate a solid high molecular polymer thermoplastic part 111 . The conductive part 112 is solidified and formed on the thermoplastic part 111 .

[0102] It is understandable that the auxiliary materials laid before step S22 can be torn off after step S22 is completed, and then the formed thermoplastic part 111 and the conductive part 112 can be stored on a bracket of a specific shape.

[0103] Therefore, by laying out the fibers and the conductive member 112 and introducing the liquid thermoplastic material, and then heating to form the thermoplastic member 111 and the conductive member 112 , the preparation process of the thermoplastic member 111 and the conductive member 112 can be simplified.

[0104] As shown in FIG7 and FIG8 , in some embodiments, S11, the step of laying out fibers and conductive members in a mold and introducing liquid thermoplastic material into the mold, includes:

[0105] S111, laying out fibers and conductive members in a mold;

[0106] S112, introducing liquid thermoplastic material into the mold.

[0107] Thus, the corresponding molding process of the thermoplastic part 111 and the conductive part 112 can be vacuum infusion molding, which facilitates the formation of a dense and structurally stable thermoplastic part 111 , so that the thermoplastic part 111 has good thermoplasticity.

[0108] As shown in FIG7 and FIG9 , in some embodiments, S11, the step of laying out fibers and conductive members in a preset mold and introducing liquid thermoplastic material into the mold, includes:

[0109] S113, pre-impregnating the liquid thermoplastic material into the fiber,

[0110] S114, laying out the conductive member and the fiber pre-impregnated with the thermoplastic material into the mold.

[0111] Thus, the corresponding molding processes of the thermoplastic part 111 and the conductive part 112 can be prepreg molding or fiber rubber molding, which is beneficial to improving the density and performance stability of the formed thermoplastic part 111, so that the thermoplastic part 111 has good thermoplasticity.

[0112] It should be noted that, unless there is any conflict, the embodiments and features in the embodiments of this application can be combined with each other.

[0113] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A pneumatic accessory, comprising: A thermoplastic part configured to be capable of plastic deformation when heated; A conductive member is in contact with and connected to the thermoplastic member, and the conductive member is configured to generate heat when powered.

2. The pneumatic attachment according to claim 1, wherein: The thermoplastic component has a receiving cavity, and at least a portion of the conductive component is filled in the receiving cavity.

3. The pneumatic accessory according to claim 1, wherein: The pneumatic accessory comprises a plurality of thermoplastic parts, and the plurality of thermoplastic parts are welded and connected.

4. The pneumatic accessory according to any one of claims 1 to 3, wherein: Each of the thermoplastic parts is in contact with and connected to at least one of the conductive parts.

5. The pneumatic accessory according to any one of claims 1 to 4, wherein: The material of the thermoplastic part includes at least one of polymethyl methacrylate, polybutylene terephthalate, polyethylene, polyvinyl chloride, polystyrene, polyamide, polyoxymethylene, polycarbonate, polyphenylene ether, polysulfone and rubber.

6. A blade, comprising: At least one pneumatic attachment according to any one of claims 1 to 5; The blade body, the pneumatic attachment is connected to the surface of the blade body.

7. The blade according to claim 6, wherein: The pneumatic attachment is welded to the surface of the blade body.

8. The blade assembly according to claim 6 or 7, wherein: The blade body comprises a windward surface and a leeward surface opposite to each other, and a leading edge and a trailing edge opposite to each other along the chord direction of the blade; At least one of the pneumatic attachments is connected to the windward surface; and / or, At least one of the aerodynamic attachments is connected to the trailing edge.

9. A wind turbine generator set, comprising the blade according to any one of claims 6 to 8.

10. A method for manufacturing a pneumatic accessory, comprising: Obtaining a thermoplastic part and a conductive part, wherein the conductive part is in contact with and connected to the thermoplastic part, the conductive part is configured to generate heat when powered, and the thermoplastic part is configured to generate plastic deformation when heated; The conductive part is energized, and the thermoplastic part is pressurized by a preset die to obtain a pneumatic accessory of a preset shape.

11. The method for manufacturing a pneumatic accessory according to claim 10, wherein: The step of obtaining the thermoplastic part and the conductive part comprises: Laying out fibers and conductive elements in a mold, and introducing liquid thermoplastic material into the mold; The mold is heated, the fiber and the liquid thermoplastic material undergo a chemical reaction to form a solid thermoplastic component, and the conductive component is in contact with and connected to the thermoplastic component.

12. The method for manufacturing a pneumatic accessory according to claim 11, wherein: The step of laying out the fibers and the conductive member in the mold and introducing the liquid thermoplastic material into the mold comprises: Laying out fibers and conductive members in a mold; introducing a liquid thermoplastic material into the mold; or, Pre-impregnating the fibers with a liquid thermoplastic material; Electrical conductors and the fibers pre-impregnated with the thermoplastic material are laid out into the mold.

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