摘要
在浮法玻璃生产中,流道作为连接熔窑与锡槽的关键环节,其热工稳定性对玻璃质量起着决定性作用。传统浮法玻璃流道采用的单向缩口拱碹结构,普遍存在热气体流动阻滞、温度波动大及污染物凝结等问题,严重影响玻璃的成形质量。为此,本文创新提出了一种双向缩口斜碹结构,通过横向(流道宽度方向)15°±2°与纵向(高度方向)10°±2°的协同缩口设计,并结合平顶砖密封方案,实现流道顶部热气流场的优化调控。工业测试结果表明,该新型结构可使流道温度波动幅度降低42%,污染物凝结量减少67.7%,同时降低耐火材料成本23%。研究深入揭示了斜碹角度对气流雷诺数(Re > 4000)和温度均匀性的调控机制,为提升浮法玻璃成形过程的稳定性提供了全新的解决方案。
In the production of float glass,the flow channel plays a crucial role in connecting the melting furnace and tin bath,and its thermal stability plays a decisive role in the quality of the glass.The traditional float glass flow channel adopts a unidirectional tapered arch structure,which generally suffers from problems such as blockage of hot gas flow,large temperature fluctuations,and condensation of pollutants,seriously affecting the quality of glass forming.To this end,this article innovatively proposes a bidirectional tapered inclined arch structure,which achieves optimized control of the hot air flow field at the top of the channel through a collaborative tapered design of 15°±2°in the transverse(channel width direction)and 10°±2°in the longitudinal(height direction),combined with a flat top brick sealing scheme.The industrial test results show that this new structure can reduce the temperature fluctuation amplitude of the flow channel by 42%,reduce the condensation of pollutants by 67.7%,and reduce the cost of refractory materials by 23%.The research has revealed in depth the regulatory mechanism of the oblique angle on the Reynolds number(Re>4000)and temperature uniformity of the airflow,providing a new solution for improving the stability of the float glass forming process.
作者
马月文
吴加锋
诸葛勤美
马伟学
MA Yuewen;WU Jiafeng;ZHUGE Qinmei;MA Weixue(China New Building Materials Design&Research Institute Co.,Ltd.,Hangzhou 310022,China)
出处
《玻璃》
2025年第12期37-41,共5页
Glass
关键词
浮法玻璃
流道结构
斜碹
热工性能
温度均匀性
float glass
flow channel structure
inclined arch
thermal performance
temperature uniformity
