Method:
Process for improving the root layer of wind turbine blades, characterized by the following steps:
a. Prefabricated blade root mold and its spread; Take the prefabricated blade root mold, the prefabricated blade root mold includes the prefabricated blade root mold holder
(1) The semicircular arc-shaped outer surface installed on the blade root prefabricated mold holder (1)
(2) Rotation arm of prefabricated blade root mold
(3) and rotation arm rotating arm lock wheel of prefabricated root mold (3)
(4) Prefabricated universal mold wheel installed under the prefabricated root mold support (1)
(5) Shaped clamping device of G used to clamp the outer surface of the semicircular arc (2) and the glass cloth
The diameter of the outer surface in the shape of a semicircular arc (2) described in ( 6) is the value obtained in sosubtracting the diameter of the blade root mold from the thickness of the blade root glass cloth layer and the fiberglass cloth
(7) is laid on the outer surface in semicircular arc shape (2) of the prefabricated mold at the blade root in reverse order. Thanks to the gravity of the fiberglass fabric (7), it sags naturally and is laid down smoothly and. naturally on the outer surface in the shape of a semicircular arc (2), then use the G-shaped clamping device (6) to clamp the fiberglass cloth (7) on the prefabricated mold at the base of the blade;
b. Lay the fiberglass cloth on the blade mold and fix the skin and the fiberglass cloth
(8) is laid in the arc shape of the concave d-shaped blade root mold arc (9). , and the local areas are fixed with glue to fix the position of the fiberglass cloth (8) to ensure that the fiberglass cloth (8) is in a positionprecise, smooth and wrinkle-free;
c. prefabricated mold to the base of the blade and connect the suspension chain
(10) with a shackle
(11) On the turning arm of the prefabricated mold to the base (3) , use an arrow
(12) to place the prefabricated blade root mold and the fiberglass cloth (7) placed on the outer surface in the shape of a semi-circular arc (2) Lift - them together and loosen the locking wheel (4) of the folding arm so that the folding arm (3) can rotate freely. Place the pre-made root mold and fiberglass cloth (7) laid on the semi-circular arc-shaped outer surface (2) and flip them together 180°, lock them. lock the steering wheel (4) again, and place the turned root prefabricated mold and fiberglass cloth (7) laid on the semi-circular arc-shaped outer surface (2) smoothly into the concave circle in the arc blade root mold(9), then loosen the G-shaped clamp (6), place the fiberglass cloth (7) flat into the concave arc blade root mold (9), and then prefabricate the blade root in the mold. Lift the blade root mold (9);
d. Attach the fiberglass cloth (7). Place the fiberglass cloth (7) into the concave arc blade root mold (9), one by two. Fold the fiberglass fabric (7) in layers 6 to 8 over the flanges. (13) on both sides of the blade root mold (9). The flanges are glued to the edge of the mold (13) with double-sided adhesive tape to secure the fiberglass fabric (7) in the blade root mold (9). ):
e. Vacuum seal and cast the casting to fit the guide system as a whole onto the blade root mold (9).system, then seal the vacuum film with the fiberglass cloth into the blade root mold ( 9). After evacuating the film under vacuum, inject resine into the guiding system through the glue injection hole so that the fiberglass cloth is soaked with resin. After the resin injection is completed, heat-cured resin molding.