STEAM GENERATOR HEATING PIPE REPAIR AND REPAIR PROCESS

摘要

Steam generator heater repair medium and repair process. The invention relates to a steam generator heating tube repair sleeve (50, 70) which at one end has a continuous flange (36, 52, 72) that passes into a tapered area (38). , 54, 74, 102) reducing outward toward the other end of the glove, to which a straight area (56, 76) connects. The invention also relates to a method of repairing the steam generator heating pipe to a steam generator heating pipe (12, 32, 86, 88, 90) mounted on a steam generator (80) having a defective tube end, whereby a plurality of steam generator heating tubes (12, 32, 86, 88, 90) are conducted at their respective ends through a respective tube bottom (18, 44, 82). plated, and are welded with the plating (20, 46, 84), comprising the following steps: 1. Tapered milling (14) of the defective pipe end and milling a recess (16) in the plating (20, 46, 84) around the end of the defective tube; 2. Placing a steam generator heating tube repair sleeve (50, 70) according to the invention at the end of the defective tapered milled pipe (14), at least in the tapered area (38, 54, 74), the outer contour of the sleeve is adapted to the inner contour of the milled tube end; 3. Lamination of steam generator heating tube repair sleeve (50, 70) in its straight (56, 76) or tapered (38, 54, 74, 102) area; 4. Welding the flange area (36, 52, 72) of the steam generator heating tube repair sleeve (34) laminated with the plating (20, 46, 84) such that a seam is formed sealing Fig. Significant: fig.2.