超超临界锅炉内螺纹管垂直上升水冷壁横向裂纹原因分析及治理  

Reason Analysis and Process on Vertical Rising Rifled Tube Transverse Crack of Ultra-supercritical Boiler

作　　者：张家维[1] 张忠华[2] 张振杰[1] 宋大勇[1] 苏东[1] 冷杰[1] 

机构地区：[1]辽宁省电力有限公司电力科学研究院,辽宁沈阳110006 [2]华能营口电厂,辽宁营口115007

出　　处：《东北电力技术》2013年第10期24-30,共7页Northeast Electric Power Technology

摘　　要：超超临界锅炉内螺纹管垂直上升水冷壁横向裂纹造成锅炉频繁泄漏,严重影响机组安全生产。通过大量试验研究和原因排查,确定了综合治理方法,有效改善了水冷壁运行状态,提高了水冷壁运行安全性,减少了机组因水冷壁泄漏造成的停机次数。Transverse crack of uhra-supercritical vertical rising and rifled tube caused frequent leakage of boiler, seriously affecting the safe production of power generation unit, affecting the power generation production. Through a lot of experimental research and cause screening and analysis, the comprehensive control methods are determined, which effectively improves the running state of the water wall, the safety of water wall running, and reduces unit shut-down times caused by leakage of water wall.

关 键 词：超超临界 水冷壁 裂纹 壁温测点 节流孔 

分 类 号：TK229.2[动力工程及工程热物理—动力机械及工程]