Assembly self-adaptive spherical flange connecting structure

The invention discloses an assembly self-adaptive spherical flange connecting structure which comprises a concave spherical flange, a sealing piece, a convex spherical flange, a movable lantern ring, a spherical screw and a fastener. Through holes which are uniformly distributed on the circumference are formed in the concave spherical surface flange and the movable lantern ring; the spherical screw sequentially penetrates through the movable sleeve ring and the through hole in the concave spherical flange to be fixedly connected with the fastener. A convex spherical flange is arranged between the concave spherical flange and the movable lantern ring, the convex spherical flange is matched with the concave spherical flange through a spherical surface, and the convex spherical flange is in surface contact with the movable lantern ring; the concave spherical flange is not in contact with the movable lantern ring; the spherical screw is matched with the movable sleeve ring through a spherical surface; a concave s