摘要
某超超临界锅炉启动初期螺旋管水冷壁超温。割管检查,发现超温管子焊缝内壁存在焊瘤,焊瘤的节流作用使管子内介质流量减少,导致管子超温停炉。
At the initial stage of a super Ultra-Critical boiler,water wall was overheated. In the overheated tube a weld beading was found. The Orificing of the weld beading reduced the flow of the medium in the tube,which resulted in the tube overheating.
引文