Rapid joint replacing device for cooling air pipe

The invention relates to the technical field of pipeline joints, in particular to a rapid joint replacing device for a cooling air pipe. The device comprises a cooling air duct, a clamp groove, a tightening hoop, a support frame, a guide frame, springs and the cooling air pipe; a fixed joint is arranged at the end of the cooling air duct and provided with the clamp groove, the support frame is provided with a wide portion and a narrow portion, the narrow portion slides in the guide frame, the guide frame and the bottom end of the narrow portion is connected through the springs, the guide portion and the outer wall of the cooling air pipe are fixedly connected, the end of the cooling air pipe is provided with a rubber sleeve, and a plurality of balls are arranged at the end of the rubber sleeve. According to the device, by arranging a clamping device, mounting and dismounting are convenient, the mounting speed is increased, the mounting time is saved, and the sealing performance is guaranteed while the mounting efficiency is improved.