Offshore wind turbine generator rotor cooling air pipe flange welding anti-deformation device

The utility model provides an offshore wind turbine generator rotor cooling air pipe flange welding anti-deformation device which comprises a bottom plate and a gasket on the bottom plate, a pressing plate is arranged at the upper end of the gasket, a flange is arranged on the pressing plate, a lining template is arranged on the flange, and the lining template is arranged on the lining template. The deformation of the flange in the welding process is controlled by fixing the inner diameter template and the appearance pressing plate of the flange, and the purpose of preventing welding deformation is achieved. 本实用新型提供一种海上风电机组转子冷却风管法兰焊接防变形装置，包括底板，所述的底板上垫片，所述的垫片的上端设置有压板，所述的压板上设置有法兰，所述的法兰上设置有内衬模板，本实用新型通过固定法兰的内径模板和外形压板，控制法兰在焊接过程中的变形量，达到防止焊接变形的目的。