In this study, the authors describe an invention relating to a cooling sealing device for cooling dead zone of vaporising cooling flue. The cooling sealing device comprises a sealing cover plate welded on the cooling dead zone of vaporising cooling flue, and a case disposed at inner side of the sealing cover plate and held in the cooling dead zone of vaporising cooling flue. The case is of flat box structure with triangular end face, and includes a straight edge and two arc-shaped oblique edges; and a water inlet and a water outlet are opened on the upper and lower ends of the straight edge of the case, and are hermetically welded with the upper and lower cut openings of a heated straight tube at right side of the cooling dead zone of vaporising cooling flue. The invention can effectively release lateral thermal expansion force of vaporising cooling flue, eliminate the potential safety hazard of breach due to melting of sealing cover plate on cooling dead zone, avoid weld metal tearing and cracking and water leakage of heated tubes, and improve safety of vaporising cooling flue.
Author: Xu, Jia ;Full Source: Faming Zhuanli Shenqing CN 102,297,441 (Cl. F23J15/06), 28 Dec 2011, Appl. 10, 149,128,3 Jun 2011; 6pp. (Ch.) ;