煤矿户外双层智能柜的高温性能设计与分析
Design and analysis of high temperature performance of coal mine outdoor double intelligent cabinet
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摘要: 针对煤矿户外双层智能柜在运行中易发生高温故障甚至爆炸的问题,以计算流体动力学CFD为基础,运用Fluent软件进行分析,根据煤矿户外双层智能柜的结构、工作条件等,建立有限元模型,设置边界条件.通过正交试验设计模拟方案,对影响柜内温度的风机排风量Q,百叶窗排数N,智能组件的安装位置C三因素进行分析,得出诸因素对柜内影响的显著性大小依次为:Q> N> C,并从中选取最优设计方案,可使柜内最高温度控制在50℃,从而满足国家电网的温控要求.数值模拟与试验结果之间的误差为4.2%,验证了有限元模型的正确性,为户外双层智能柜的高温性能设计分析提供了参考.Abstract: For coal mine outdoor double intelligent cabinet is easy to have high temperature breakdown problems and even explode in operation, based on the computational fluid mechanics, using Fluent software analysis was made.According to the coal mine outdoor double layer structure and the working conditions etc, the finite element model was set up, and the boundary conditions were set.By orthogonal experiment, a simulation scheme was designed, the effect factors of temperature inside cabinet (exhaust air fan Q, shutter row number N and intelligent component layout C)were analyzed. It was concluded that the factors' influence on cabinet of significance was as follows: Q> N> C.The optimal design scheme was selected to make that the highest temperature of the cabinet was 50℃ , thus meeting the requirement of temperature control of State Grid.The error between the numerical simulation and experimental results was 4.2%, which verified the correctness of the finite element simulation and provided a reference for design and analysis of high temperature performance outdoor double intelligent cabinet.
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