Manufacturing process of wind power vanes

Abstract

The invention discloses a manufacturing process of wind power vanes. A one-step die assembly technology is adopted, i.e. when a main bracket is bonded with a shell, another shell is immediately bonded with the main bracket, and the die assembly of the vanes is continuously finished, therefore, the die assembly is carried out continuously instead of being carried out after the main bracket and the shell are bonded and solidified. By adopting the manufacturing process of the wind power vanes, the quality of the vanes can be improved, the use levels of tools and raw materials and auxiliary materials are both greatly reduced, glue is especially saved, the production cost of the vanes is reduced, the unnecessary time for weighting the solidification of the glue is reduced, and the production efficiency is improved.

Description

technical field [0001] The invention relates to a manufacturing process of blades of wind power equipment. Background technique [0002] Generally speaking, the blades of wind turbines are generally very long (the length of the blades of the megawatt class is generally about 25 meters, and the length of the blades of the 5 megawatts is more than 60 meters), and the area is huge. Such a huge behemoth is only suspended from the fixed end to run in space. How to reduce the self-weight of the blade while ensuring that the blade has sufficient stiffness, strength, especially fatigue resistance, and stability in a strong wind field is the key issue in the design and manufacture of the blade. [0003] The current large and medium-sized composite material wind turbine blades are basically prepared by a multi-step molding method: first make the upper and lower shells and keel beams (or webs) of the blades, and then glue them together with resin. Since the strength of the joint is m...

AI Technical Summary

Problems solved by technology

This method is completely done by hand, with low labor productivity, high labor intensity, poor on-site sanitary conditions, difficult product quality control, and low product mechanical properties.

[0006] Chinese patent application "Vacuum Assisted Infusion Method for Large Wind Turbine Blades", publication number CN1721161A, discloses a vacuum production method for blades, which overcomes the shortcomings of traditional prepreg and hand lay-up methods, but only provides a vacuum infusion method. The method of manufacturing the skin and reinforcement layer on the blade has not systematically proposed the overall manufacturing technical plan of the FRP blade of the megawatt wind turbine, such as the specific vacuum introduction technology manufacturing, the blade connection plan, etc., so that the labor production efficiency of the entire blade can be improved. , The labor intensity has not been further improved, and the product performance has not been significantly improved

In the existing process, after the main bracket is bonded to the lower shell, the main bracket must be fastened to the lower shell with straps, which will cause uneven gaps between the upper and lower shells and the main bracket

The existing secondary mold clamping process tools and raw and auxiliary materials use a lot, which reduces the service life of the tools and wastes raw materials, especially the adhesive, because when the lower shell and the main bracket are bonded and solidified, the excess adhesive may It is useless after curing, which increases the production cost

In addition, in the existing technology, the main bracket needs to be cured for about 8 hours after being bonded to the lower casing, and then when the main bracket is bonded to the upper casing, it needs to be cured for about 8 hours, resulting in waste of man-hours and increasing the production cycle of the blade.

Images