On-line auto-excitation type self-stabilization fouling clearing and heat-exchange reinforcing device for tubular heat exchanger

The invention discloses an on-line auto-excitation type self-stabilization fouling clearing and heat-exchange reinforcing device for a tubular heat exchanger. The device comprises a spherical connection chamber top cover, a spherical connection chamber bottom cover, a heat exchange tube, a cylindrical connection rod, a bearing sleeve and a spiral vane. The ratio of the outer diameter of the spiral vane to the inner diameter of the heat exchange tube is 0.6-0.8. The ratio of the screw pitch of the spiral vane to the length of the heat exchange tube is 0.05-0.15. The spiral vane is provided with three or more balance holes. The ratio of the hole diameter of each balance hole to the inner diameter of the heat exchange tube ranges from 1:10 to 1:15. The ratio of the distance from the center of the first balance hole away from the tail end of the spiral vane to the tail end of the spiral vane to the outer diameter of the spiral vane is 0.5-1. By means of matching of the technical parameters and reasonable arrangem