A whole winding formed wind power rotary drum structure and a preparation method thereof

Abstract

The present application relates to a kind of whole winding forming wind force rotary drum structure and its preparation method, including mould, comprising: intermediate transition structure;Cap type structure, including cap type longitudinal reinforcement and cap type ring reinforcement;Adjustable precision tooling, including: concentric shaft one and concentric shaft two, concentric shaft one and concentric shaft two are connected by flange and intermediate transition structure centering;Two support structures are respectively detachably set on concentric shaft one and concentric shaft two;Multiple sets of adjusting structure are respectively set on concentric shaft one and concentric shaft two, for the adjustment roundness of cap type ring reinforcement;Wherein, cap type ring reinforcement is set on the outside of adjusting structure, cap type longitudinal reinforcement is set on the outside of cap type ring reinforcement, support structure and intermediate transition structure.The present application utilizes cap type structure and intermediate transition structure to form a set of preparation mould, realizes the whole winding preparation of outer cylinder, saves cost, improves preparation efficiency, and improves the mechanical properties of overall structure.

Description

Technical Field

[0001] This invention relates to the field of marine wind power energy conservation technology, and in particular to an integrally wound wind turbine structure and its preparation method. Background Technology

[0002] Green and energy-saving technologies for ships are a key focus and hot topic in the development of high-tech shipbuilding this century. Wind-powered propulsion rotors are an innovative technology utilizing wind energy. This technology alters the wind direction during a ship's voyage, providing thrust in the correct direction, thus reducing fuel consumption and operating costs, while effectively lowering the ship's energy efficiency design index (EER). It is an innovative energy efficiency technology. The key is installing a rotor on the ship, utilizing the Magnus effect to drive it to rotate in the wind, generating a force perpendicular to the wind speed direction, thereby providing propulsion for the ship. Compared to steel rotors, composite materials have higher specific stiffness, higher specific strength, and greater design flexibility. Applying them to rotor fabrication can significantly reduce structural weight and further improve energy efficiency. Therefore, the development of composite material rotors for marine wind-powered propulsion rotors is gradually attracting industry attention. Various transport vessels operating on international routes often have large tonnages. To meet EER requirements and fully realize energy-saving benefits, the research and development of large-scale composite material rotor structure design and fabrication technology is an inevitable trend and requirement for industry development. During offshore operations, the wind turbine is subjected to various complex and even extreme loads due to the harsh marine conditions. Therefore, the key technical challenge lies in the ingenious design and fabrication of large-scale turbine structures that balance overall structural rigidity, strength, and lightweight requirements, while maintaining stable and safe operation and ensuring structural safety. Furthermore, the high-speed rotation of the outer cylinder necessitates high precision in machining, including roundness, concentricity, and perpendicularity, to ensure minimal dynamic balance mass and achieve efficient propulsion and energy-saving effects.

[0003] In the existing technology, the manufacturing precision of large-scale composite material wind turbines is low, which affects their use.

[0004] Therefore, we propose an integrally wound wind turbine structure and its preparation method. Summary of the Invention

[0005] In response to the shortcomings of the existing production technology, the applicant provides an integrally wound wind turbine structure and its preparation method. By utilizing a cap-shaped structure and an intermediate transition structure to form a preparation mold, the integral winding preparation of the outer cylinder is achieved, which saves costs, improves preparation efficiency, and enhances the mechanical properties of the overall structure.

[0006] The technical solution adopted in this invention is as follows:

[0007] A wind turbine structure integrally wound and molded, comprising:

[0008] Mold, including:

[0009] The intermediate transition structure is prepared by a vacuum infusion process.

[0010] The cap-shaped structure is manufactured using a vacuum injection process and includes cap-shaped longitudinal ribs and cap-shaped ring ribs.

[0011] Adjustable precision fixture, including:

[0012] Concentric shaft one and concentric shaft two are centered and connected by a flange and an intermediate transition structure;

[0013] Two support structures are detachably mounted on concentric shaft one and concentric shaft two, respectively;

[0014] Multiple adjustment structures are set on concentric shaft one and concentric shaft two respectively, for adjusting the roundness of the cap-shaped ring rib;

[0015] Among them, the cap-shaped ring reinforcement is set on the outside of the adjustment structure, and the cap-shaped longitudinal reinforcement is set on the outside of the cap-shaped ring reinforcement, the support structure and the intermediate transition structure.

[0016] Its further features are:

[0017] The main body of the concentric shaft one and the concentric shaft two is a hollow cylindrical shell structure, and the end sections of the concentric shaft one and the concentric shaft two are solid shafts.

[0018] The intermediate transition structure is a composite material sandwich structure with a foam core.

[0019] The support structure includes a shell and a connecting plate. There are two shells connected by the connecting plate, and the shells are provided with through holes.

[0020] The adjustment structure includes an adjustment rod, one end of which is provided with a threaded hole, and a bolt is fitted inside the threaded hole.

[0021] The adjustment structure and the cap-shaped ring reinforcement are each provided in five sets, and the cap-shaped longitudinal reinforcement is provided in four sets.

[0022] The first and second concentric shafts are mounted on a winding device, and the composite material fibers are wound around the winding device until an outer cylinder is formed.

[0023] This invention also discloses a method for preparing a wind turbine rotor integrally wound and formed, comprising the following steps:

[0024] Step 1: Prepare the intermediate transition structure using a vacuum infusion process. Concentric shaft one and concentric shaft two are connected to the intermediate transition structure via a flange.

[0025] Step 2: Detachably install the two support structures onto concentric shaft one and concentric shaft two respectively;

[0026] Step 3: Fix the multiple sets of adjustment structures onto concentric shaft one and concentric shaft two respectively;

[0027] Step 4: Prepare cap-shaped longitudinal ribs and cap-shaped ring ribs using a vacuum injection process. The cap-shaped ring ribs are placed on the outside of the adjustment structure, and the cap-shaped longitudinal ribs are placed on the outside of the cap-shaped ring ribs and the support structure. The roundness of the cap-shaped ring ribs is adjusted by adjusting the structure.

[0028] Step 5: Install concentric shaft one and concentric shaft two on the winding equipment, and wind the composite material fibers until the outer cylinder is formed.

[0029] The beneficial effects of this invention are as follows:

[0030] This invention has a compact and reasonable structure and is easy to operate. By using a cap-shaped structure and an intermediate transition structure to form a set of preparation molds, the overall winding preparation of the outer cylinder is realized, which not only saves costs and improves preparation efficiency, but also improves the mechanical properties of the overall structure.

[0031] In addition, the present invention also has the following advantages:

[0032] (1) By setting an adjustment structure, which includes an adjustment rod and a bolt, the roundness of the cap-shaped ring rib is adjusted by rotating the bolt, thereby ensuring the roundness of the outer cylinder.

[0033] (2) The support structure is detachably set on the first and second concentric shafts. By disassembling the support structure, personnel can enter and adjust the adjustment structure.

[0034] (3) It effectively improves the overall and local strength and deformation of large-scale outer cylinder structures with minimal structural weight, and has multiple advantages of excellent structural lightweighting and mechanical properties.

[0035] (4) In view of the structural characteristics and preparation process of composite material outer cylinder reinforced by longitudinal and transverse skeleton, a set of high-precision preparation tooling was cleverly designed and built. Through the centering and mechanical connection of flange 5 in the middle key connection part, the support structure 3 at both ends, and the middle distributed adjustment structure 4, the stability and reliability of the entire tooling system are realized, laying the foundation for the preparation of high-precision large-scale composite material outer cylinder. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the structure of the present invention.

[0037] Figure 2 This is a schematic diagram of the adjustable precision tooling of the present invention.

[0038] Figure 3This is a schematic diagram of the outer cylinder after winding and molding according to the present invention.

[0039] Figure 4 for Figure 3 The main view.

[0040] Figure 5 for Figure 4 A schematic diagram of the AA cross-section.

[0041] Figure 6 for Figure 5 Schematic diagram of the BB cross section.

[0042] The components are as follows: 1. Concentric shaft one; 2. Concentric shaft two; 3. Support structure; 301. Shell; 302. Connecting plate; 303. Through hole; 4. Adjustment structure; 401. Adjusting rod; 402. Threaded hole; 403. Bolt; 5. Flange; 6. Intermediate transition structure; 7. Hat-shaped structure; 701. Hat-shaped longitudinal rib; 702. Hat-shaped ring rib; 8. Outer cylinder; 9. Composite material fiber. Detailed Implementation

[0043] The specific embodiments of the present invention will now be described with reference to the accompanying drawings.

[0044] like Figures 1-6 As shown, a wind turbine rotor structure integrally wound and formed includes an adjustable precision tooling and a mold. The adjustable precision tooling includes a concentric shaft 1, a concentric shaft 2, a support structure 3, an adjustment structure 4, and a flange 5. The concentric shaft 1 and the concentric shaft 2 are connected by the flange 5 and are concentrically arranged. There are two support structures 3, which are respectively arranged on the concentric shaft 1 and the concentric shaft 2.

[0045] The mold includes an intermediate transition structure 6 and a cap-shaped structure 7. The cap-shaped structure 7 is set on the support structure 3, and the roundness of the cap-shaped structure 7 is adjusted by the adjustment structure 4. An intermediate transition structure 6 is set between the flanges 5.

[0046] like Figure 5 As shown, one end of concentric shaft 1 and one end of concentric shaft 2 are mechanically connected to the intermediate transition structure 6 via flange 5 to improve the firmness of key connection positions and ensure preparation accuracy. The other end of concentric shaft 1 and one end of concentric shaft 2 are connected to the winding equipment to drive the entire device to rotate and realize the outer cylinder winding preparation. The main body of concentric shaft 1 and one end of concentric shaft 2 is a hollow cylindrical shell structure, and the end sections of concentric shaft 1 and one end of concentric shaft 2 are solid shafts.

[0047] The intermediate transition structure 6 is a composite material sandwich structure with a foam core, which is prepared in advance through a vacuum injection process and is aligned and connected with the flange 5 to achieve high-precision and high-stability installation.

[0048] like Figure 2 , Figure 5 As shown, the support structure 3 includes a housing 301 and a connecting plate 302. Two housings 301 are provided, connected by the connecting plate 302. Each housing 301 has a through hole 303. The outer end of the housing 301 is curved. Two support structures 3 are provided, each detachably connected to concentric shaft 1 and concentric shaft 2, respectively, ensuring the detachability of the support structures 3 and facilitating personnel access for adjusting tooling accuracy. Five sets of support structures 3 are provided.

[0049] like Figure 2 As shown, the adjustment structure 4 is provided in multiple sets, which are spaced apart on the concentric shaft 1 and the concentric shaft 2. The adjustment structure 4 includes an adjustment rod 401, which is a solid circular metal rod. One end of the adjustment rod 401 is welded to the concentric shaft 1 or the concentric shaft 2, and the other end of the adjustment rod 401 has a threaded hole 402, in which a bolt 403 is fitted.

[0050] like Figure 1 , Figure 5 As shown, the cap-shaped structure 7 includes cap-shaped longitudinal ribs 701 and cap-shaped annular ribs 702. The cap-shaped annular ribs 702 are pre-fabricated using a vacuum injection process, and a pre-designed connection point with the cap-shaped longitudinal ribs 701 is provided. Tension is applied to the tooling device via bolts 403 on the adjusting rod 401 to ensure the roundness of the cap-shaped annular ribs 702 and their concentricity and perpendicularity to the flange 5. The cap-shaped longitudinal ribs 701 are pre-fabricated using a vacuum injection process, and their fixed installation on the tooling device is achieved through the pre-reserved connection point on the cap-shaped annular ribs 702. Five sets of cap-shaped annular ribs 702 and four sets of cap-shaped longitudinal ribs 701 are provided. Composite material fibers 9 are wound using a winding device to ultimately form the outer cylinder 8.

[0051] It efficiently improves the overall and local strength and deformation of large-scale outer cylinder structures with minimal structural weight, and has multiple advantages of excellent structural lightweighting and mechanical properties.

[0052] From the initial structural design stage, the characteristics of the winding process were taken into consideration, thus achieving a high degree of integration between structural design and manufacturing process. A set of manufacturing molds was constructed using the cap-shaped structure 7 and the intermediate transition structure 6 to achieve the overall winding manufacturing of the outer cylinder 8, which not only saved costs and improved manufacturing efficiency, but also improved the mechanical properties of the overall structure.

[0053] In response to the structural characteristics and fabrication process of composite material outer cylinders reinforced with longitudinal and transverse skeletons, a set of high-precision fabrication tooling was ingeniously designed and constructed. Through the centering and mechanical connection of flange 5 at the key intermediate connection points, the setting of support structures 3 at both ends, and the intermediate distributed adjustment structure 4, the stability and reliability of the entire tooling system are achieved, laying the foundation for the fabrication of high-precision large-scale composite material outer cylinders.

[0054] This invention also discloses a method for preparing a wind turbine rotor integrally wound and formed, comprising the following steps:

[0055] Step 1: The intermediate transition structure 6 is prepared by vacuum infusion process. The concentric shaft 1 and the concentric shaft 2 are connected to the intermediate transition structure 6 by flange 5.

[0056] Step 2: Detachably install the two support structures 3 onto concentric shaft 1 and concentric shaft 2 respectively;

[0057] Step 3: Fix the multiple sets of adjustment structures 4 onto concentric shaft 1 and concentric shaft 2 respectively;

[0058] Step 4: Prepare the cap-shaped longitudinal rib 701 and cap-shaped ring rib 702 by vacuum injection process. The cap-shaped ring rib 702 is set on the outside of the adjustment structure 4, and the cap-shaped longitudinal rib 701 is set on the outside of the cap-shaped ring rib 702 and the support structure 3. The roundness of the cap-shaped ring rib 702 is adjusted by the adjustment structure 4.

[0059] Step 5: Install concentric shaft 1 and concentric shaft 2 on the winding equipment, and wind the composite material fiber 9 until the outer cylinder 8 is formed.

[0060] The above description is an explanation of the present invention and not a limitation thereof. The scope of the present invention is defined by the claims. Within the scope of protection of the present invention, any form of modification may be made.

Claims

1. A wind turbine structure integrally wound and formed, characterized in that, include: Mold, including: The intermediate transition structure (6) is prepared by vacuum infusion process; The cap-shaped structure (7) is made by vacuum injection process and includes cap-shaped longitudinal ribs (701) and cap-shaped ring ribs (702). Adjustable precision fixture, including: Concentric shaft one (1) and concentric shaft two (2) are connected by a flange (5) and an intermediate transition structure (6); Two support structures (3) are detachably mounted on concentric shaft one (1) and concentric shaft two (2), respectively; Multiple adjustment structures (4) are respectively set on concentric shaft one (1) and concentric shaft two (2) for adjusting the roundness of the cap-shaped ring rib (702); the adjustment structure (4) includes an adjustment rod (401), one end of the adjustment rod (401) is provided with a threaded hole (402), and a bolt (403) is matched in the threaded hole (402). Among them, the cap-shaped ring reinforcement (702) is set on the outside of the adjustment structure (4), and the cap-shaped longitudinal reinforcement (701) is set on the outside of the cap-shaped ring reinforcement (702), the support structure (3) and the intermediate transition structure (6).

2. The wind turbine structure integrally wound as described in claim 1, characterized in that: The main body of the concentric shaft one (1) and the concentric shaft two (2) is a hollow cylindrical shell structure, and the end sections of the concentric shaft one (1) and the concentric shaft two (2) are solid shafts.

3. The wind turbine structure integrally wound as described in claim 1, characterized in that: The intermediate transition structure (6) is a composite material sandwich structure with foam core.

4. The wind turbine structure integrally wound as described in claim 3, characterized in that: The support structure (3) includes a shell (301) and a connecting plate (302). There are two shells (301), which are connected by the connecting plate (302). The shell (301) has a through hole (303).

5. The wind turbine structure integrally wound as described in claim 1, characterized in that: The adjustment structure (4) and the cap-shaped ring reinforcement (702) are each provided with five sets, and the cap-shaped longitudinal reinforcement (701) is provided with four sets.

6. The wind turbine structure integrally wound as described in claim 5, characterized in that: The first concentric shaft (1) and the second concentric shaft (2) are mounted on a winding device to wind composite fiber (9) until an outer cylinder (8) is formed.

7. A method for preparing a wind turbine rotor integrally wound and formed, characterized in that, Includes the following steps: Step 1: Prepare intermediate transition structure (6) by vacuum infusion process, and connect concentric shaft one (1) and concentric shaft two (2) by flange (5) and intermediate transition structure (6); Step 2: Install the two support structures (3) detachably on the concentric shaft one (1) and the concentric shaft two (2) respectively; Step 3: Fix the multiple sets of adjustment structures (4) onto concentric shaft one (1) and concentric shaft two (2) respectively; Step 4: Prepare the cap-shaped longitudinal rib (701) and cap-shaped ring rib (702) by vacuum injection process. The cap-shaped ring rib (702) is set on the outside of the adjustment structure (4), and the cap-shaped longitudinal rib (701) is set on the outside of the cap-shaped ring rib (702) and the support structure (3). The roundness of the cap-shaped ring rib (702) is adjusted by the adjustment structure (4). Step 5: Install concentric shaft one (1) and concentric shaft two (2) on the winding equipment, and the winding equipment winds the composite fiber (9) until the outer cylinder (8) is formed.

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