铝带坯铸轧机控制柜温度场分析

Temperature Field Analysis on Control Cabinet of Aluminum Strip Casting Mill

针对铝带坯铸轧机控制柜内温度过高可能导致元件失效的问题,首先设计控制柜的结构并确定元件布局方案,并通过热场分析对比了3种不同的散热方案。仿真结果表明,采用将大功率元件布置在上方、小功率元件布置在下方的布局方式,并使用抽风机替代鼓风机,可以实现控制柜内风压均匀分布和有效散热,最后将设计的控制柜应用于工业现场,现场实测结果表明,实际温度与仿真温度的相对误差为2%左右,表明元件布局方案与散热方案是合理的,同时该设计方案也为其它控制柜的设计提供了指导。

In view of the problem that the internal temperature of the control cabinet of the aluminum strip casting mill may be too high,the structure of the control cabinet is firstly determined and the layout scheme of the components is determined.Three different heat dissipation schemes are compared by thermal field analysis.The simulation results show that the high-power components are arranged on the upper part,the low-power components are arranged in the lower layout mode,and the exhaust fan is used instead of the blower to realize uniform distribution and effective heat dissipation in the control cabinet.Finally,the designed control cabinet is applied to the industrial site,and the field measurement is performed.The results show that the relative error between the actual temperature and the simulated temperature is about 2%,which indicates that the components layout scheme and the heat dissipation scheme are reasonable,and the design scheme also provides guidance for the design of other control cabinets.