Unlike ordinary flange, reverse balanced the flange with fresh board front flange plate after the thickened flange plate only increased stiffener flange stiffness can be increased, at the same time, increased stiffening plate bolts growth conduciveaccurately applied bolt pre-tension. By adjusting the size of the flange, stiffeners balancing planes suffered pressure in the Weld A (stiffening plate and cylinder wall weld) at the moment and bolt pre-tension at the weld A Moment balance thereby reduce weld A suffered moment, reducing the size of the stiffeners.
Compared with forged flanges, reverse balance the flange changed connection of the wind turbine tower technology, has the following advantages: the bolt operation spacing from stiffeners affect bolt arrangement of fine compact flange plate thinning; reduce steel 10% above, while the lower flange part per ton of finished Price 20%; end milling surface to reduce the production of low energy consumption, low cost; reverse balanced flange tower butt weld butt weld the same material, the tube wall, with butt weld tower, easy to guarantee the quality of welding; small amount of welding, welding facilities; improve weld force status of the flange and the cylinder wall, and solve the defects of the weld heat affected zone.