Making method of heavy gauge composite material main beam cap for fan blades

Abstract

The invention discloses a making method of a heavy gauge composite material main beam cap for fan blades. The heavy gauge composite material main beam cap is made through a double-channel glue injection double face diversion improved vacuum adsorption technology. The problems of the making process efficiency and the process quality of the heavy gauge composite material main beam cap are effectively solved by controlling the paving dimensions of upper and lower diversion nets, and the resin glue injection sequences and other process parameters of corresponding glue injection tubes. Compared with the prior art, the method is in favor of realizing the process control of the making process of the heavy length and / or heavy thickness composite material main beam cap and reducing the making risk. The method can effectively reduce the requirements of the main beam cap making process on a matching resin system and a fabric structure form by designing the initial time and speed of resin perfusion of a fabric reinforced material layer in all directions, and is especially suitable for making heavy gauge carbon fiber fabric reinforced resin-based composite material main beam caps.

Description

technical field [0001] The invention relates to a method for manufacturing a spar cap, in particular to a method for manufacturing a large-size composite material spar cap for fan blades, and belongs to the technical field of fan blades. Background technique [0002] Composite fan blades are key components of wind power generation systems and directly affect the performance of the entire system. The main spar cap (also known as the girder) is the main load-bearing part of the blade, and its design and manufacturing quality level are very important. With the development of wind turbines in the direction of high-power and / or low-speed wind fields, the size of fan blades continues to increase, and the length, thickness, and width of blade spar caps also increase. In the existing technology, the traditional vacuum adsorption process of single-channel glue injection and single-side diversion can generally ensure the preparation process effect of the main spar cap of the large-le...

AI Technical Summary

Problems solved by technology

In the existing technology, the traditional vacuum adsorption process of single-channel glue injection and single-side diversion can generally ensure the preparation process effect of the main spar cap of the large-length blade, but with the increase of the thickness and width of the main spar cap, It is becoming more and more difficult to manufacture large-size composite spar caps by using the traditional vacuum adsorption process of single-channel glue injection and single-side diversion, and its process efficiency and process quality are becoming more and more difficult to guarantee.

Patent CN201210261878.1 proposes an improved vacuum adsorption process of single-channel glue injection and double-sided flow diversion to prepare carbon fiber composite spar caps. This improved vacuum adsorption process can be used to effectively improve the manufacture of large-thickness spar caps. efficiency and quality, but there are still problems such as low process efficiency and high risk of process quality when used to prepare large-width spar caps

The above-mentioned vacuum adsorption process technology cannot meet the process efficiency and process quality requirements of large-width spar caps, and with the increase of width, process control is difficult and process quality risks are great

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