Reverse deformation shaping tool for outward turnover of tower drum flange of wind generating set and method for reverse deformation shaping tool

Abstract

The invention discloses a reverse deformation shaping tool for outward turnover of a tower drum flange of a wind generating set and a method for the reverse deformation shaping tool. The reverse deformation shaping tool is fixedly connected with the tower drum flange through a plurality of symmetrical tight high-strength bolts, and is equipped with a bottom plate and a flat plate flange which are oppositely arranged; a plurality of rib plates and a supporting ring are arranged between the top surface of the bottom plate and the bottom surface of the flat plate flange; each rib plate is positioned at the inner side of the supporting ring; and a plurality of through holes which correspond to mounting holes in the tower drum flange in position are formed in the flat plate flange. A tool operating method comprises the following steps of: requiring auxiliary flame to roast while the reverse deformation shaping tool used; tightening the high-strength bolts after roasting one to two rings of the reverse deformation shaping tool; referring to the flat plate flange and a gap in the outer side of a drum flange connecting surface to judge a shaping condition; judging that repair of the drum flange is completed when no gap is in the outer side; and dismounting the reverse deformation shaping tool after the drum flange is completely cooled, and measuring practical internal inclining amount of the drum flange. A shaping yield reaches 100%, and potential quality hazards in a mounting process are eliminated.

Description

technical field [0001] The invention relates to the technical field of wind power generating sets, in particular to a wind power generating set tower flange valgus anti-deformation shaping tool and method thereof. Background technique [0002] According to the transportation conditions and installation conditions, the tower frame of the wind turbine usually adopts a segmented structure, and each tower section adopts a connection method of forged flanges and high-strength bolts. Due to the small amount of inclination reserved for the flange, the flange is deformed after welding, resulting in a gap outside the flange connection part, which affects the pre-tightening force of the bolt connection and has a great impact on the stability of the fan. However, it is clearly stipulated in the design technical requirements and the tower manufacturing standard GB / T19072 that the flange is not allowed to turn outward. Therefore, it is necessary to reshape and repair the flanges deforme...

AI Technical Summary

Problems solved by technology

[0003] At present, the first method used is to plan off the inner weld seam connecting the flange and the barrel joint, and then continuously weld the inner weld seam to achieve the purpose of repairing the flange to the inclination. Although this method also has a certain effect, but There is no guarantee that 100% of the everted flange will be repaired to a qualified level. The repair method of welding after repeated carbon arc gouging will cause a lot of waste of welding materials and labor. Repeated welding will also affect the quality of the weld seam

The second method adopted is to solve the valgus problem by flame-baking weld seam shaping after flange welding, but the flame-baking cycle is long and the effect is not obvious, and the flange valgus is more serious after partial baking, and there is uncertainty

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