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Blunt trailing edge fan blade and method for fixing vertical face core material of trailing edge of blunt trailing edge fan blade

A technology for fan blades and blunt trailing edges, which is applied in the field of fixing core materials of fan blades with blunt trailing edges and their trailing edge facades, can solve problems such as displacement of trailing edge core materials and excessive use of adhesive glue, and reduce spraying. The use of glue is beneficial to the effect of bonding strength

Active Publication Date: 2014-06-11
BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve many disadvantages caused by the excessive use of adhesive glue in the blunt trailing edge fan blade and the displacement of the trailing edge core material in the prior art, the present invention provides a blunt trailing edge fan blade and its trailing edge elevation core material fixing method

Method used

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  • Blunt trailing edge fan blade and method for fixing vertical face core material of trailing edge of blunt trailing edge fan blade

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Embodiment Construction

[0021] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0022] The method for fixing the core material of the façade of the blunt trailing edge fan blade provided in this embodiment is as follows:

[0023] When laying the façade core material of the blunt trailing edge of the fan blade, at the pre-designed bonding point, cut out a square or other shape gap with the glass fiber cloth of the outer skin, and if there is a release cloth at the place, it also needs to be cut off , forming a through hole. The gap at this time can be the same size for each layer of glass fiber cloth on the outer skin, or it can be cut according to the rule that the gap of the glass fiber cloth close to the core material is small, and the gap of the glass fiber cloth far away from the core material is large. In a word, as long as the through holes are formed on the outer skin at the positions corresponding to the bonding poin...

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Abstract

The invention provides a blunt trailing edge fan blade. A blunt trailing edge comprises a trailing edge outer skin, a trailing edge inner skin and a vertical face core material between the trailing edge outer skin and the trailing edge inner skin; a region, which corresponds to the vertical face core material, on the trailing edge outer skin is provided with an outer skin through hole; the outer skin through hole is filled with an adhesive; the adhesive is adhered to the core material. The invention also provides a method for fixing the vertical face core material of the trailing edge of the blunt trailing edge fan blade. According to the blunt trailing edge fan blade provided by the embodiment of the invention, the core material is laid neatly, so that a resin-rich region caused by shifting of the core material is avoided on the corner of the blunt trailing edge; the core material is laid neatly, so that the spacing from the edge of the core material to the edge of a die is easy to control and cannot be excessive due to slippage of the core material to cause super poor quality of the core material.

Description

technical field [0001] The application relates to a fan blade with a blunt trailing edge and a method for fixing the core material of the trailing edge facade. Background technique [0002] In blunt trailing edge fan blades, it is generally necessary to set up a facade at the position where the pressure surface or suction surface is close to the rear edge of the blunt trailing edge fan blade, so that the blunt trailing edge structure can be formed after the pressure surface and the suction surface are fastened together. The skin design of large fan blades usually adopts a sandwich structure. When laying layers, the outer skin glass fiber cloth-core material-inner skin glass fiber cloth is laid in the order, and a small amount of spray glue is used on the facade to cover the core material. Fixed on the outer skin fiberglass cloth. [0003] In the actual industrial production process, the core layer of the facade area of ​​the trailing edge of the blunt trailing edge blade ad...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F03D11/00B29C65/54
CPCY02E10/722Y02E10/72
Inventor 李小明
Owner BEIJING GOLDWIND SCI & CREATION WINDPOWER EQUIP CO LTD
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