Water-cooled fixing device

The utility model discloses a water-cooled fixing device. The water-cooled fixing device is characterized in that the water-cooled fixing device comprises a lower beam, a vertical beam and an upper beam, wherein two ends of the vertical beam are respectively connected with the lower beam and the upper beam. The vertical beam is provided with a guide cylinder which is used for being inserted by one end of a heat transfer surface heater. The outer portion of a flue is provided with a locking snap ring and a locking lining plate. The locking snap ring and the locking lining plate are used for fixing one end of the heat transfer surface heater. The lower beam and the upper beam penetrate through the flue and are fixed on a beam lining plate through a beam snap ring. The water-cooled fixed device abandons a traditional hanging fixing mode, achieves the fixation of a heating surface in the inner portion of the flue. The water-cooled fixed device has the advantages of being simple and compact in structure and low in