摘要
以某电厂的主蒸汽管道为例,对其支吊架进行冷、热态检验,发现炉侧连续恒力吊架冷态时指针卡死下极限位置,热态时实际垂直热位移值较小,与设计严重不符。根据现场情况和应力计算结果综合分析,发现管道壁厚存在严重误差导致管道下沉。针对以上情况,首次提出了支吊架配置改造方案需要考虑的4个方面,给解决此类问题提供帮助。
Based on the analysis of main steam pipe hangers in cold and hot state,it is found that continuous constant hangers of boiler side are compressed to ultimate position in cold state. The actual vertical thermal displacement does not conform to design value in hot state. Site analysis and stress calculation show that the wall thickness deflection results in pipe subsidence. Four aspects are proposed firstly to be considered in hangers allocation and adjustment,which helps to solve similar problem.
出处
《工业安全与环保》
北大核心
2016年第9期58-60,共3页
Industrial Safety and Environmental Protection
关键词
壁厚误差
管道下沉
支吊架
应力计算
wall thickness deflection
pipe subsidence
hangers
stress calculation
