A high-strength connection structure and segmented wind turbine blades

A technology for connecting structures and wind power blades, which is applied in the direction of connecting components, wind power generation, and wind power engines consistent with the wind direction. Internal water leakage, the effect of ensuring connection strength and airtightness

Active Publication Date: 2021-11-16
CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In the prior art, there are some segmented wind power blades, and bolts are used to connect the segments, but the bolts are usually set inside the wind power blades, and it is necessary to drill holes in the wind power blades, and tighten and fix the bolts from the holes. After drilling holes along the contour direction of the wind turbine blade, it will affect the structural strength of the wind turbine blade, thereby affecting the service life of the wind turbine blade

Method used

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  • A high-strength connection structure and segmented wind turbine blades
  • A high-strength connection structure and segmented wind turbine blades
  • A high-strength connection structure and segmented wind turbine blades

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] like Figures 1 to 3 Shown: a high-strength connection structure, including:

[0050] The first segment 1 and the second segment 2 arranged along the length direction of the wind power blade, the first segment 1 and the second segment 2 include:

[0051] A first mating surface 3 extending toward the inside of the wind power blade, the first mating surface 3 being perpendicular to the length direction of the wind power blade;

[0052] A second mating surface 4 that is misaligned with the first mating surface 3, and the second mating surface 4 is misaligned in a direction close to the first segment 1 with respect to the first mating surface 3;

[0053] A connection surface 5, the connection surface 5 connects the first mating surface 3 and the second mating surface 4;

[0054] Connecting bolts 6, the connecting bolts 6 are located in the wind power blades, and pass through the two first mating surfaces 3 to fix the first segment 1 and the second segment 2, and the conne...

Embodiment 2

[0069] like Figures 4 to 7 Shown: The difference from Embodiment 1 is that the second mating surface 4 of the second segment 2 is provided with a bump 21, and the second mating surface 4 of the first segment 1 is correspondingly provided with a groove, and the bump 21 and the concave The slots cooperate with each other to limit the flanging of the second segment 2 to the outside of the wind turbine blade.

[0070] In this embodiment, the anti-flange structure is a protrusion 21 and a groove that cooperate with each other. By setting the protrusion 21 on the second segment 2, the first segment 1 is correspondingly provided with a groove. In the first segment 1 When docking with the second segment 2, the protrusion 21 is inserted into the groove, so that the groove limits the degree of freedom of the protrusion 21, restricts its flipping and movement perpendicular to the length direction of the wind turbine blade, thereby restricting the second segment Segment 2 is flanged tow...

Embodiment 3

[0073] like Figures 8 to 9 Shown: The difference from Example 1 is that the second segment 2 is provided with a pre-embedded screw sleeve 31 on the connecting surface 5, the embedded screw sleeve 31 is located at one end close to the second mating surface 4, and the embedded screw sleeve 31 is vertical In the length direction of the wind turbine blade, the first segment 1 is provided with a corresponding through hole on the connecting surface 5, and a locking bolt 32 is arranged in the through hole, and the locking bolt 32 cooperates with the embedded screw sleeve 31 to restrict the second segment 2. Flanging to the outside of the wind turbine blade.

[0074] In this embodiment, the anti-flange structure is a pre-embedded screw sleeve 31 and a locking bolt 32 that cooperate with each other. By setting the embedded screw sleeve 31 on the connecting surface 5 of the second segment 2, the first segment 1 The connecting surface 5 of the connecting surface 5 is provided with a co...

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Abstract

The present invention relates to the technical field of wind power blades, in particular to a high-strength connection structure and segmented wind power blades, including: a first segment and a second segment arranged along the length direction of the wind power blade, the first segment and the second segment The segment includes: a first mating surface extending to the inside of the wind turbine blade, the first mating surface is perpendicular to the length direction of the wind turbine blade; a second mating surface is offset from the first mating surface, and the second mating surface is closer to the first mating surface relative to the first mating surface. The direction of the segment is misaligned; the connection surface, the connection surface connects the first mating surface and the second mating surface; the connecting bolt, the connecting bolt is located in the wind turbine blade, and passes through the two first mating surfaces, and the first segment and the second segment The section is fixed, and the connecting bolts are parallel to the length direction of the wind turbine blade; wherein, an anti-flange structure is provided between the first segment and the second segment, and the anti-flange structure restricts the second segment from flanging to the outside of the wind turbine blade. In the present invention, the connection strength and sealing performance are ensured, and the service life of the wind power blades is increased.

Description

technical field [0001] The invention relates to the technical field of wind power blades, in particular to a high-strength connection structure and segmented wind power blades. Background technique [0002] The use of a large amount of fossil energy has not only promoted the development of technology, but also increased the burden on the earth's ecological environment. Air pollution threatens human life and health. Renewable energy has gradually become the preferred energy source and occupies an increasingly important position in the energy structure of various countries. status. As a form of renewable energy, wind energy has the advantages of low development cost, mature technology, and wide distribution, and has become a key direction for the development of renewable energy in recent years. [0003] In order to make full use of wind energy resources, wind turbines are also gradually becoming larger, and the length of their blades is also increasing. The areas rich in wind...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F03D1/06F16B13/10
CPCF03D1/0675F16B13/04Y02E10/72
Inventor 谈昆伦季小强白高宇
Owner CHANGZHOU HONGFA ZONGHENG ADVANCED MATERIAL TECH
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