Bonding reinforcement process for rear edge of wind turbine blade
A wind power blade and trailing edge technology, applied in the field of wind power blade manufacturing technology, can solve the problems of insufficient strength of high-strength epoxy glue, heavy cost, blade failure, etc., and achieve the effect of improving bonding strength, preventing cracking and avoiding failure
Active Publication Date: 2013-02-06
JIANGSU ZHONGYA NEW MATERIAL
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Problems solved by technology
Since the strength of high-strength epoxy glue is far lower than that of continuous glass fiber cloth, the trailing edge of the blade is cracked and damaged first in the subsequent use process, resulting in the failure of the entire blade, and some blade manufacturing companies have paid a heavy price for this.
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Embodiment Construction
[0020] The process of bonding and reinforcing the trailing edge of wind power blades includes the following steps:
[0021] 1. Mold shaping: by figure 1 As we know, glue strips with a thickness of 2mm are pasted on the reinforced parts 1 and 2 of the trailing edge of the mold for shaping, and the vacuum infusion method is used to make the corresponding suction surface shell 4 and pressure surface shell 5 of the mold respectively, and use high-strength Epoxy glue 6 glues the upper and lower shells together. Mold shaping is to ensure that after the subsequent process is completed, that is, after the FRP 3 is covered, the shape still meets the design requirements.
[0022] 2. Surface treatment of the trailing edge: After the wind turbine blade is solidified and molded, remove the flash of the trailing edge, fillet R2~R5 along the trailing edge, and clean the surface.
[0023] 3. The trailing edge is covered with epoxy glass fiber reinforced plastic:
[0024] (1) Material prepa...
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Abstract
The invention discloses a bonding reinforcement process for a rear edge of a wind turbine blade, comprising the following steps: 1) mold shaping; 2) rear edge surface processing; 3) epoxy glass steel coating; and 4) appearance finishing. The bonding reinforcement process can be used for preventing the elevation of a reinforcing material and a body at the edge opening part during the process of coating the epoxy glass steel and greatly improving the binding strength of a suction surface shell and a pressure surface shell by coating the rear edge epoxy glass steel, thus avoiding that the edge of the blade firstly cracks during the later use process and causes the failure of the whole blade, and eliminating the problem that the blade has a cracking quality problem during the period of service life.
Description
technical field [0001] The invention relates to a manufacturing process of a wind power blade, in particular to a process for bonding and reinforcing the trailing edge of the wind power blade. Background technique [0002] At present, the wind turbine blades are made first of the suction side shell, the pressure side shell and the shear web, and then the above parts are bonded together with high-strength epoxy glue after being positioned by the tooling fixture, and the leading edge is used again after the mold is removed. Epoxy resin is used as a binder and biaxially woven glass fiber cloth is used as a reinforcing material to strengthen the wind turbine blades. Since the strength of high-strength epoxy glue is far lower than that of continuous glass fiber cloth, the trailing edge of the blade is cracked and damaged first during subsequent use, resulting in the failure of the entire blade. Some blade manufacturing companies have paid a heavy price for this. Contents of the...
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IPC IPC(8): B29C69/00B29L31/08
Inventor 杨云胜曾庆川罗维奇朱国森祝正强殷家福赵东
Owner JIANGSU ZHONGYA NEW MATERIAL