Pre-embedded thread sleeve of wind turbine blade

A wind power blade and pre-embedded technology, which is applied to wind power generation, wind engines consistent with the wind direction, wind engines, etc., can solve the problems of limited processing conditions and cost of the screw sleeve length

Pending Publication Date: 2018-06-19
GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, under the same diameter of the screw sleeve, the length of the screw sleeve is limited by the processing conditions and cost, and it cannot be made very long.

Method used

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  • Pre-embedded thread sleeve of wind turbine blade
  • Pre-embedded thread sleeve of wind turbine blade
  • Pre-embedded thread sleeve of wind turbine blade

Examples

Experimental program
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Effect test

Embodiment Construction

[0018] The present invention will be further described below in conjunction with specific examples.

[0019] Such as Figure 1 to Figure 5 As shown, the wind turbine blade embedded screw sleeve provided in this embodiment includes a first sleeve 1, a second sleeve 2 and a wedge-shaped pipe 3 (made of iron) with a built-in filler 6 (preferably PVC). The first sleeve 1 and the second sleeve 2 are both round sleeves, the material is 42CrMoA, and the surface is treated with internal and external Dacromet / Dlata tone+Dlata seal to prevent corrosion. The first sleeve 1 and the second sleeve Cylinder 2 adopts interference fit and is forcibly connected by hydraulic pressure to form a whole in advance, which can solve the problem of too long sleeve length and high processing cost, because the sleeve is too long and requires a long drill bit, which has the problem of vibration The processing accuracy is low, and the input cost of the drilling machine is high. Dividing the sleeve into tw...

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PUM

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Abstract

The invention discloses a pre-embedded thread sleeve of a wind turbine blade. The pre-embedded thread sleeve comprises a first sleeve and a second sleeve; the first sleeve and the second sleeve are ininterference fit, and are forced to be connected in a hydraulic manner to be prefabricated into a whole; when bolted connection is performed, a bolt penetrates through the first sleeve and is in threaded connection with the second sleeve; a first passage for the bolt to penetrate is formed in the first sleeve; a second passage with threads is formed in the second sleeve; the first passage communicates with the second passage; the second passage comprises two different sections; one of the two sections is a step-shaped section without threads, and the other section is a bolted connection section with the threads; and the step-shaped section is located between the first passage and the bolted connection section. By adopting the pre-embedded thread sleeve disclosed by the invention, the length and the anti-drawing capacity of the blade root pre-embedded thread sleeve can be maximized.

Description

technical field [0001] The invention relates to the technical field of renewable new energy wind power blades, in particular to a pre-embedded screw sleeve for wind power blades. Background technique [0002] As known in the industry, in the wind power industry, T-bolts are usually used to connect the blades to the hub. Another alternative is pre-embedded screw sleeves, that is, a series of screw sleeves are embedded in the blade root during the laying process and are integrally poured with glass fibers for blade root connection. The advantage of the pre-embedded screw connection method is that it can reduce the connection force of a single connection. The pull-out force of the embedded screw sleeve mainly depends on the surface area of ​​the screw sleeve. The larger the surface area, the larger the bonding area with the surrounding material, and the greater the pull-out force it can withstand. However, under the same diameter of the screw sleeve, the length of the screw ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/68F03D1/06B29L31/08
CPCF03D1/0675B29C70/682B29L2031/085Y02E10/72
Inventor 陈文光何学李军向
Owner GUANGDONG MINGYANG WIND POWER IND GRP CO LTD
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