论文部分内容阅读
石洞口电厂１～４号炉为改进型１０２５ｔ／ｈ、亚临界ＵＰ型直流锅炉。为改善顶棚过热器的工作条件，在结构上作了重大改进，经应力分析表明，改造后的管子受力条件有了很大的改善，具有良好的柔性和充分的热胀自补偿能力。改造时对悬吊结构、炉顶密封进行相应的调整，为此作了应力应变和热负荷分布测试，以证实其安全性能。改造后的３台锅炉顶棚过热器已经历了一年多运行考验，至今未发生因顶棚造成的爆漏事故。
Shidongkou Power Plant No. 1 to No. 4 furnace for the improved 1025t / h, subcritical UP-type boiler. In order to improve the working condition of the roof superheater, significant improvements have been made in the structure. The stress analysis shows that the stress conditions of the pipe after the renovation have been greatly improved, and the utility model has good flexibility and full self-compensation capability of thermal expansion. During the renovation, the structure of the suspension and the roof seal should be adjusted accordingly. Stress-strain and heat load distribution tests were conducted to verify the safety performance. After the transformation of the three boiler roof superheater has experienced more than a year running test, so far there is no roof leakage caused by the explosion.