Hanging ring assembling method of centrifugal compressor welding machine shell

The invention discloses a lifting ring assembling method for a centrifugal compressor welding machine shell. The method comprises the steps that the lifting ring placing position and the positioning angle are determined according to the welding machine shell structure; according to the positioning angle, mechanical analysis is conducted on the welded machine shell in the hoisting state, and a hoisting ring size parameter table is output; the hanging ring size parameter table comprises the weight of the welding shell, and the hanging ring diameter, the hanging ring fillet radius, the hanging ring thickness and the minimum distance between the hanging ring and the outer wall of the welding shell corresponding to the weight of the welding shell; and according to the positioning angle and the size parameter table, the hanging ring is connected to the welding machine shell, so that assembling of the hanging ring on the welding machine shell is completed. According to the lifting ring assembling method for the cent