Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for improving surface roughness and dimension consistency of wind turbine blade root pultrusion preformed units

A technology of wind power blades and prefabricated parts, which can be applied to household components, climate sustainability, sustainable buildings, etc. It can solve problems such as time-consuming and labor-intensive, reduce bonding strength, and affect the environment, so as to avoid dust pollution and achieve good dimensional consistency , high operating efficiency

Inactive Publication Date: 2016-08-24
TECHSTORM MATERIAL TECH SHANGHAI CO LTD
View PDF2 Cites 8 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, because the grinding operation is manually controlled, the grinding process (such as grinding position, grinding speed, and grinding time) is not a standardized process, and the degree of dimensional change of the root pultrusion preform is also inconsistent, resulting in the dimensional consistency of the final root pultrusion preform poor
[0005] B. In order to avoid greatly affecting the size of the root pultruded preform, the grinding operation must be carried out carefully, so the improvement of the surface roughness of the root pultruded preform is limited, and it cannot effectively improve its adhesion to other structures of the blade root. Connectivity
[0006] In addition, there are other problems in the grinding process: a. The grinding operation is inefficient, time-consuming and laborious, and produces a large amount of dust, which affects the environment and endangers human health; Absorb a large amount of dust and reduce its bonding strength with other structures at the root of the blade

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Method for improving surface roughness and dimension consistency of wind turbine blade root pultrusion preformed units
  • Method for improving surface roughness and dimension consistency of wind turbine blade root pultrusion preformed units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] Such as figure 1 and figure 2 As shown, a method for improving the surface degree and dimensional consistency of the pultruded preform at the root of wind power blades, the steps are:

[0059] (a) Prepare strip-shaped release cloth for ironing (1): cut out strip-shaped release cloth on the release cloth, and perform ironing treatment on both sides of the strip-shaped release cloth;

[0060] (b) Install a release cloth device (2) around the forming mold (7), and place the strip-shaped release cloth (1) that is ironed on the release cloth device (2) in a winding form;

[0061] (c) Arrange the glass fiber yarn (3) on the creel (4), use the pultrusion equipment (5) to pull the glass fiber yarn (3) through the glue tank (6), and then with the long strip of ironing edge The strip-shaped release cloth (1) is pulled into the forming mold synchronously, and the strip-shaped release cloth (1) with ironed edges is attached to the inner surface of the forming mold (7), that is, ...

Embodiment 2

[0066] Same as Example 1, except that the section of the root pultrusion preform is wedge-shaped; the thickness of the release cloth described in step (a) is 0.05mm; the glass fiber yarn described in step (c) It is S glass fiber; the glue tank described in step (c) is equipped with epoxy resin; the heat curing molding described in step (d) is carried out in a molding mold with 5 heating plates inside, and each The temperature of the heating plate can be independently controlled; the pultrusion speed of the pultrusion equipment described in step (d) is 0.1 m / min.

Embodiment 3

[0068] Same as Example 1, except that the section of the root pultrusion preform is triangular; the thickness of the release cloth described in step (a) is 0.15mm; the glass fiber yarn described in step (c) It is H glass fiber; the glue tank described in step (c) is equipped with epoxy resin and vinyl resin; the heat curing molding described in step (d) is carried out in a molding mold with 4 heating plates inside , and each heating plate can be independently temperature controlled; the pultrusion speed of the pultrusion equipment described in step (d) is 0.2 m / min.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

A method for improving surface roughness and dimension consistency of wind turbine blade root pultrusion preformed units at least comprises the steps of a, preparing an underpressed strip-shaped demolding cloth; b, arranging a demolding cloth releasing device on the peripheral of a forming mold, and winding the underpressed strip-shaped demolding cloth around the demolding cloth releasing device; c, arranging glass fiber yarn on a creel, and pulling the glass fiber yarn with a pultrusion device to pass through a glue tank and then enter into the forming mold together with the underpressed strip-shaped demolding cloth synchronously, wherein the underpressed strip-shaped demolding cloth is attached to the inner surface of the forming mold, in other words, the impregnated glass fiber yarn is wrapped in the underpressed strip-shaped demolding cloth; d, pulling the impregnated glass fiber yarn and the underpressed strip-shaped demolding cloth with the pultrusion device to pass through the mold to be heated, cured and formed, and then conducting cutting with a cutter into a specified length according to dimension requirement, so that the root pultrusion preformed units with the demolding cloth are obtained; e, tearing off the demolding cloth before placing the root pultrusion preformed units in a shell mold, so that the wind turbine blade root pultrusion preformed units are obtained.

Description

technical field [0001] The invention relates to the technical field of wind power equipment manufacturing, in particular to a method for improving the surface degree and dimensional consistency of a pultrusion preform at the root of a wind power blade. Background technique [0002] Wind power blades are an important part of wind turbines, and are mainly divided into two parts: the blade body and the blade root. The root of the blade is used to connect with the rotating shaft of the wind turbine and bear the load transmitted from the entire blade. Therefore, it is necessary to use more layers of glass fiber cloth in its design to improve reliability and durability. In order to prevent the ply folds at the blade root and improve the use efficiency of the shell mold, most of the glass fiber cloth at the blade root is usually prefabricated, and then the root prefabricated part is put into the shell mold and formed integrally with other structures. [0003] Currently, there are ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): B29C70/52B29C70/54B29L31/08
CPCB29C70/521B29C70/54B29L2031/085Y02B10/30
Inventor 周凯
Owner TECHSTORM MATERIAL TECH SHANGHAI CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com