摘要
下花园发电厂 3号炉自投产以来 ,高温对流过热器曾数次出现超温、爆管现象。针对这一问题 ,在深入调研的基础上 ,进行了全方位的分析和计算 ,提出了改造方案 :高温对流过热器整体翻转 180°、并增加受热面。该厂进行了改造后的试运行、热力试验和验收工作。全部焊口都进行了射线检查 ,焊接质量的一次合格率大于 98% ,改造后主汽温度达到额定值 ,锅炉效率提高了 0 4 4%。本次改造的成功 。
Since No 3 boiler of Xiahuayuan Power Plant going into operation, there had been the phenomena of overheating and tube rupture in intense heat convection recuperator The overall analysis and computation were done for this problem on the basis of deep survey and research, and the alteration solution was put forward: intense heat convection recuperator was reversed 180° and the heating surface was increased Xiahuayuan Power Plant made trail operation, thermal test, check and acceptance for the recuperator after the alteration It is found that the qualified rate of weld quality exceeded 97 percent after all welded seams were inspected with rays The temperature of live steam reached rated value, and boiler efficiency has increased 0 44 percent after alteration This success in the alteration has engineering practical value and guidance meaning for the same type of the boilers
出处
《现代电力》
2003年第5期1-5,共5页
Modern Electric Power
