Tube bundle anti-loosening device for core-pulling type shell-and-tube heat exchanger

The utility model relates to a tube bundle anti-loosening device for a core-pulling type shell-and-tube heat exchanger. Comprising a shell pass cylinder and a tube pass end socket, a tube bundle gasket, a tube bundle tube plate and an end socket gasket are sequentially arranged between the shell pass cylinder and the tube pass end socket, a first bolt hole is formed in an outer circumferential flange of the shell pass cylinder, a second bolt hole is formed in an outer circumferential flange of the tube pass end socket, and a third bolt hole is formed in an outer circumferential flange of the tube bundle tube plate. Radial expansion parts are arranged in the first bolt hole and the third bolt hole, and power driving parts are arranged in the radial expansion parts; the device has the characteristics that the structure is simple, the use is convenient, dislocation among the shell pass cylinder, the tube bundle gasket and the tube bundle tube plate is avoided, the phenomena of leakage and leakage caused by later