Blade shell preparation method and blade

A blade and shell technology, applied in the field of blade shell preparation, can solve the problems of reducing the strength of the main beam, difficult to ensure the fixing effect, difficult to fit the plate to the mold, etc., and achieve the effect of improving the strength

Inactive Publication Date: 2021-07-16
SINOMATECH WIND POWER BLADE
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  • Abstract
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  • Claims
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Problems solved by technology

[0002] In recent years, the main girder of wind turbine blades has been prepared by pultrusion technology, which is formed with the shell at one time. However, after the main girder is laid and the binding tool is removed, the mold surface is curved and the plate has a certain rigidity. It is difficult to fit the mold, and the gap at the end of the main beam is too large due to the opening of the plate. The existing technology uses bundling or pasting to deal with the gap. When dealing with a thicker or stiffer carbon fiber formed main beam, It is difficult to ensure a good fixing effect, and the bindings and glue will remain in the main beam, which is equivalent to introducing foreign objects and will reduce the strength of the main beam

Method used

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  • Blade shell preparation method and blade
  • Blade shell preparation method and blade
  • Blade shell preparation method and blade

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Embodiment Construction

[0037] Features and exemplary embodiments of various aspects of the present application will be described in detail below. In the following detailed description, numerous specific details are set forth in order to provide a thorough understanding of the application. It will be apparent, however, to one skilled in the art that the present application may be practiced without some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by showing examples of the present application.

[0038] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The embodiments will be described in detail below in conjunction with the accompanying drawings.

[0039] Relational terms such as first and second, etc. are used only to distinguish one entity or operation from another and do not necessarily r...

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Abstract

The invention discloses a blade shell preparation method and a blade. The blade shell preparation method comprises the following steps that a plurality of pultrusion strips are provided; the plurality of pultrusion strips are stacked to form a main beam; at least one pair of limiting devices are fixed to a blade mold; the main beam is placed between each pair of limiting devices; a core material is laid on the blade mold; pouring and curing are performed to form a shell; and the shell is separated from the blade mold, and the blade shell is obtained. The limiting devices are arranged in the blade mold, and after the main beam is placed in the blade mold and when a fixing device is detached, the pultrusion strips are prevented from displacement or deformation through the limiting devices, so that the main beam can be kept in an expected shape, and the situation that foreign matters such as a binding rope and the like are introduced to affect the structural strength of the blade is avoided.

Description

technical field [0001] The application belongs to the technical field of wind power blade preparation, and in particular relates to a method for preparing a blade shell. Background technique [0002] In recent years, the main girder of wind turbine blades has been prepared by pultrusion technology, which is formed with the shell at one time. However, after the main girder is laid and the binding tool is removed, the mold surface is curved and the plate has a certain rigidity. It is difficult to fit the mold, and the gap at the end of the main beam is too large due to the opening of the plate. The existing technology uses bundling or pasting to deal with the gap. When dealing with a thicker or stiffer carbon fiber formed main beam, It is difficult to ensure a good fixing effect, and the bindings and glue will remain in the main beam, which is equivalent to introducing foreign matter and will reduce the strength of the main beam. Contents of the invention [0003] The embod...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/36B29C70/54B29C70/68B29B11/04B29L31/08
CPCB29C70/36B29C70/54B29C70/543B29C70/681B29B11/04B29L2031/085Y02E10/72Y02P70/50
Inventor 吕兵张艳秋牛娟娟宋秋香苏成功
Owner SINOMATECH WIND POWER BLADE
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