一种大型垂直轴风力发电机铝合金结构叶片
By using segmented design and innovative connecting components for aluminum alloy blades, the problems of difficult transportation, high cost, easy deformation, and difficult recycling of large vertical axis wind turbine blades have been solved, achieving efficient production and environmentally friendly recycling, and reducing transportation and project start-up costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LIAONING ZHONGWANG GROUP CO LTD
- Filing Date
- 2025-07-29
- Publication Date
- 2026-07-17
AI Technical Summary
Existing large vertical axis wind turbine blades suffer from problems such as difficult transportation, high cost, easy deformation, difficult recycling, and high project start-up costs.
The blades are designed with an aluminum alloy structure and consist of multiple blade units and connecting components. They are assembled by welding and riveting. The blade units have a hollow structure inside, and the connecting components are located inside the cavities. The blades are designed in sections, manufactured in the factory, and assembled on site. They are produced using aluminum alloy profiles and small extrusion dies.
Reduce transportation costs, simplify production processes, improve production efficiency, lower production costs, enhance product precision and strength, ensure material recyclability, prevent plastic deformation, and reduce project start-up costs.
Smart Images
Figure CN224515299U_ABST
Abstract
Claims
1. A large vertical axis wind turbine aluminium alloy structural blade characterised in that, It includes multiple blade units and multiple connecting components; the blade unit is formed by a first end profile (1), a first profile (2), a first intermediate profile assembly, a second profile (4), a second end profile (5), a third profile (6), a second intermediate profile assembly, and a fourth profile (8). The first end profile (1) is a bent profile, and the first end profile (1) is riveted to the first profile (2) and the fourth profile (8) respectively. The second end profile (5) is a bent profile, and the second end profile (5) is riveted to the second profile (4) and the third profile (6) respectively. The first profile (2) is welded to the first intermediate profile assembly, the first intermediate profile assembly is welded to the second profile (4), the third profile (6) is welded to the second intermediate profile assembly, and the second intermediate profile assembly is welded to the fourth profile (8). The blade unit has a hollow cavity structure inside, and the connecting components are set in the hollow cavity structure. Adjacent blade units are connected by the connecting components.
2. A large vertical axis wind turbine aluminium alloy structural blade according to claim 1, characterised in that, The connecting components include a first connector (13), a second connector (14), a third connector (15), and a fourth connector (16). The first connector (13) is connected to the first profile (2), the first intermediate profile assembly, the second intermediate profile assembly and the fourth profile (8) of the two adjacent blade units; The second connector (14) is connected to the first intermediate profile assembly and the second intermediate profile assembly of the two adjacent blade units; The third connector (15) is connected to the first intermediate profile assembly, the second profile (4), the third profile (6), and the second intermediate profile assembly of the two adjacent blade units; The fourth connector (16) is connected to the second profile (4), the second end profile (5) and the third profile (6) of the two adjacent blade units.
3. A large vertical axis wind turbine aluminium alloy structural blade according to claim 2, characterised in that, The first connecting member (13) includes a first connecting plate (13-1), a first reinforcing rib (13-2), and a second connecting plate (13-3) connected in sequence. The first connecting plate (13-1) is attached to a portion of the inner wall of the first profile (2) and the first intermediate profile assembly and connected by bolts. Threaded sleeves are provided at the bolt holes of the first connecting plate (13-1), the first profile (2), and the first intermediate profile assembly. The second connecting plate (13-3) is attached to a portion of the inner wall of the second intermediate profile assembly and the fourth profile (8) and connected by bolts. Threaded sleeves are provided at the bolt holes of the second connecting plate (13-3), the second intermediate profile assembly, and the fourth profile (8). A second reinforcing rib (13-4) is provided between the first connecting plate (13-1) and the second connecting plate (13-3).
4. A large vertical axis wind turbine aluminium alloy structural blade as claimed in claim 2, characterised in that, The second connecting member (14) includes a third connecting plate (14-1), a first T-beam (14-2), a second T-beam (14-3), a fourth connecting plate (14-4), a third T-beam (14-5), and a fourth T-beam (14-6). The third connecting plate (14-1) is attached to a portion of the inner wall of the first intermediate profile assembly and connected by bolts. Both the third connecting plate (14-1) and the bolt holes of the first intermediate profile assembly are provided with threaded sleeves. The vertical portions of the first T-beam (14-2) and the second T-beam (14-3) are respectively connected to both sides of the third connecting plate (14-1). The fourth connecting plate (14-4) is attached to a portion of the inner wall of the second intermediate profile assembly and connected by bolts. Both the fourth connecting plate (14-4) and the bolt holes of the second intermediate profile assembly are provided with threaded sleeves. The vertical parts of the third T-beam (14-5) and the fourth T-beam (14-6) are respectively connected to both sides of the fourth connecting plate (14-4). The horizontal part of the first T-beam (14-2) is attached to the horizontal part of the third T-beam (14-5) and connected by bolts. The horizontal part of the second T-beam (14-3) is attached to the horizontal part of the fourth T-beam (14-6) and connected by bolts.
5. A large vertical axis wind turbine aluminium alloy structural blade as claimed in claim 2, characterised in that, The third connecting member (15) includes a fifth connecting plate (15-1), a fifth T-beam (15-2), a sixth T-beam (15-3), a sixth connecting plate (15-4), a seventh T-beam (15-5), an eighth T-beam (15-6), a first I-beam (15-7), and a second I-beam (15-8). The fifth connecting plate (15-1) is attached to and bolted to the inner wall of the first intermediate profile assembly and the second profile (4). Threaded sleeves are provided at the bolt holes of the fifth connecting plate (15-1), the first intermediate profile assembly, and the second profile (4). The vertical parts of the fifth T-beam (15-2) and the sixth T-beam (15-3) are respectively connected to both sides of the fifth connecting plate (15-1). The sixth connecting plate (15-4) is connected to the inner wall of the third profile (6) and the second intermediate profile assembly. The side walls are attached and connected by bolts, and the bolt holes of the sixth connecting plate (15-4), the third profile (6) and the second intermediate profile assembly are all provided with threaded sleeves. The vertical parts of the seventh T-beam (15-5) and the eighth T-beam (15-6) are respectively connected to the two sides of the sixth connecting plate (15-4). The horizontal part of the fifth T-beam (15-2) is attached to the first horizontal part of the first I-beam (15-7) and connected by bolts. The horizontal part of the seventh T-beam (15-5) is attached to the second horizontal part of the first I-beam (15-7) and connected by bolts. The horizontal part of the sixth T-beam (15-3) is attached to the first horizontal part of the second I-beam (15-8) and connected by bolts. The horizontal part of the eighth T-beam (15-6) is attached to the second horizontal part of the second I-beam (15-8) and connected by bolts.
6. A large vertical axis wind turbine aluminium alloy structural blade as claimed in claim 2, characterised in that, The fourth connecting member (16) includes a seventh connecting plate (16-1), a ninth T-beam (16-2), a tenth T-beam (16-3), an eighth connecting plate (16-4), an eleventh T-beam (16-5), and a twelfth T-beam (16-6). The seventh connecting plate (16-1) is attached to and bolted to the inner wall of the second profile (4) and the second end profile (5). Threaded sleeves are provided at the bolt holes of the seventh connecting plate (16-1), the second profile (4), and the second end profile (5). The vertical parts of the ninth T-beam (16-2) and the tenth T-beam (16-3) are respectively connected to both sides of the seventh connecting plate (16-1). The eighth connecting plate (16-4) is attached to the inner wall of the second end profile (5) and the third profile (6) and connected by bolts. The bolt holes of the eighth connecting plate (16-4), the second end profile (5) and the third profile (6) are all provided with threaded sleeves. The vertical part of the eleventh T-beam (16-5) and the vertical part of the twelfth T-beam (16-6) are respectively connected to the two sides of the eighth connecting plate (16-4). The horizontal part of the ninth T-beam (16-2) is attached to the horizontal part of the eleventh T-beam (16-5) and connected by bolts. The horizontal part of the tenth T-beam (16-3) is attached to the horizontal part of the twelfth T-beam (16-6) and connected by bolts.
7. A large vertical axis wind turbine aluminium alloy structural blade as claimed in claim 1, wherein, The first end profile (1) includes a first end first profile (1-1) and a first end second profile (1-2) that are connected to each other. A first end first profile (1-1) is provided with a first end first profile connecting plate (1-11) at the extension line of the inner side wall of the first end first profile (1-1), and the first profile (2) is provided with a first profile connecting plate (2-1). The first end first profile connecting plate (1-11) and the first profile connecting plate (2-1) are connected by rivets after overlapping. The first end first profile (1-1) and the first profile (2) are also connected by a first sealing plate profile (9). The outer side wall of the first end first profile (1-1) is provided with a first end first profile groove (1-12), and the outer side wall of the first profile (2) is provided with a first profile groove (2-2). One side of the first sealing plate profile (9) covers the surface of the first end first profile groove (1-12) and is connected to the first end first profile groove (1-12) by rivets. The other side of the first sealing plate profile (9) covers the surface of the first profile groove (2-2) and is connected to the first profile groove (2-2) by rivets. A first end second profile (1-2) is provided with a first end second profile connecting plate (1-21) at the extension line of the inner side wall of the first end second profile (1-2), and the fourth profile (8) is provided with a fourth profile connecting plate (8-1). The first end second profile connecting plate (1-21) and the fourth profile connecting plate (8-1) are connected by rivets after overlapping. The first end second profile (1-2) and the fourth profile (8) are also connected by a fourth sealing plate profile (12). The first end second profile (1-2) is provided with a first end second profile groove (1-22) on the outer side wall, and the fourth profile (8) is provided with a fourth profile groove (8-2) on the outer side wall. One side of the fourth sealing plate profile (12) covers the surface of the first end second profile groove (1-22) and is connected to the first end second profile groove (1-22) by rivets. The other side of the fourth sealing plate profile (12) covers the surface of the fourth profile groove (8-2) and is connected to the fourth profile groove (8-2) by rivets. The second end profile (5) includes a second end first profile (5-1) and a second end second profile (5-2) that are connected to each other. A second-end first profile connecting plate (5-11) is provided at the extension line of the inner side wall of the second end first profile (5-1), and a second profile connecting plate (4-1) is provided on the second profile (4). The second end first profile connecting plate (5-11) and the second profile connecting plate (4-1) are connected by rivets after overlapping. The second end first profile (5-1) and the second profile (4) are also connected by a second sealing plate profile (10). The outer side wall of the second end first profile (5-1) is provided with a second end first profile groove (5-12), and the outer side wall of the second profile (4) is provided with a second profile groove (4-2). One side of the second sealing plate profile (10) covers the surface of the second end first profile groove (5-12) and is connected to the second end first profile groove (5-12) by rivets. The other side of the second sealing plate profile (10) covers the surface of the second profile groove (4-2) and is connected to the second profile groove (4-2) by rivets. The second end second profile (5-2) has a second end second profile connecting plate (5-21) at the extension line of the inner side wall of the second end second profile (5-2), and the third profile (6) has a third profile connecting plate (6-1). The second end second profile connecting plate (5-21) and the third profile connecting plate (6-1) are connected by rivets after overlapping. The second end second profile (5-2) and the third profile (6) are also connected by a third sealing plate profile (11). The second end second profile (5-2) has a second end second profile groove (5-22) on the outer side wall of the second end second profile (5-2), and the third profile (6) has a third profile groove (6-2) on the outer side wall. One side of the third sealing plate profile (11) covers the surface of the second end second profile groove (5-22) and is connected to the second end second profile groove (5-22) by rivets. The other side of the third sealing plate profile (11) covers the surface of the third profile groove (6-2) and is connected to the third profile groove (6-2) by rivets.
8. A large vertical axis wind turbine aluminium alloy structural blade as claimed in claim 1, wherein, The first intermediate profile assembly includes multiple first intermediate profiles (3) connected in sequence. Two adjacent first intermediate profiles (3) are connected by welding. The welding connection between two adjacent first intermediate profiles (3) is provided with a male and female groove structure. The second intermediate profile assembly includes multiple second intermediate profiles (7). Two adjacent second intermediate profiles (7) are connected by welding. The welding connection between two adjacent second intermediate profiles (7) is provided with a male and female groove structure. The connection between the first profile (2) and the first intermediate profile (3), the connection between the first intermediate profile (3) and the second profile (4), the connection between the third profile (6) and the second intermediate profile (7), and the connection between the second intermediate profile (7) and the fourth profile (8) are all provided with a male and female groove structure.
9. A large vertical axis wind turbine aluminium alloy structural blade according to claim 8, characterised in that, The first end profile (1), the first profile (2), the first intermediate profile (3), the second profile (4), the second end profile (5), the third profile (6), the second intermediate profile (7), and the fourth profile (8) are all hollow aluminum alloy extruded profiles.
10. A large vertical axis wind turbine aluminium alloy structural blade as claimed in claim 1, wherein, The blade unit is provided with a clearance hole (17) at the connection between it and the main support arm of the wind turbine, and a riveting sealing plate (18) is also provided between adjacent blade units.