WANG Hong1, XIE Guoli1, JIAO Zijing2, et al. NUMERICAL SIMULATION BASED ANTI-EROSION PLATE STRUCTURE OPTIMIZATION FOR TOP ROOF TUBES IN CFB[J]. Thermal power generation, 2012, 41(11): 41-45.
WANG Hong1, XIE Guoli1, JIAO Zijing2, et al. NUMERICAL SIMULATION BASED ANTI-EROSION PLATE STRUCTURE OPTIMIZATION FOR TOP ROOF TUBES IN CFB[J]. Thermal power generation, 2012, 41(11): 41-45.DOI:
基于数值模拟的循环流化床锅炉顶棚管防磨片结构优化研究
摘要
针对某循环流化床(CFB)锅炉顶棚管爆管事故
采用数值模拟的方法对其顶棚管区域的流场进行了模拟
模拟结果与实测值较为吻合。同时
对顶棚管防磨片结构进行了优化
结果显示
在防磨片间距为0.050m、高度为0.028m处
对靠近锅炉前墙处的防磨片角度进行-10°调整后其防磨效果为最佳。按优化结果进行实际应用后
锅炉投入运行1年再未发生顶棚管爆管事故。
Abstract
Tube burst happened on the roof tubes of a CFB.Using numerical simulation to simulate the flow field in the vicinity of the roof tubes
the results were in accordance with the actually measured values.The construction of anti-erosion plate for roof tubes was optimized.Results showed the space between each anti-erosion plate was 0.05 m and the height was 0.028 m.Best anti-wear effect was realized by adjusting the plates which were close to the front wall with-10°.After one-year application according to the simulated results
no tube burst occurred again during the boiler's operation.