高温钼丝碳化炉温度检测及控制系统研制

Temperature Detection of High Temperature Molybdenum-Wound Carbonization Furnace and Study of Controlling System

通过对几种测温元件的分析和比较 ,选定钨铼 5 2 6型热电偶作为高温钼丝碳化炉的温度检测元件 ,对偶丝的技术要求、焊接、检定都作了详细的阐述 ,并对整支热电偶的制作和装配过程作了详细的介绍。对以钼丝为发热体的变压器类负荷的温度控制 ,提出了采用晶闸管调压器调节变压器初级电压 ,与钨铼热电偶及温度调节器配合 ,组成一个温度闭环控制回路的方案 ,分析了该方案在技术上的几个难题 ,并提出了相应的解决措施 ,针对这些措施 ,进行了晶闸管调压器和温度调节器的选型。对选定的晶闸管调压器、温度调节器和热电偶进行了试用性研究 ,结果表明 ,这套系统在炉温检测及其控制方面 ,完全可以达到进口钼丝炉的控制性能和指标 ,且性能价格比要优于进口设备 。

By means of analysis and comparision of several detecting temperature components,tungsten rhenium Mldel 526 thermal-couple is selected as the temperature detection component of high temperature molybdenum-wound carbonization furnace.Trial studies of selected thyristor voltage regualtor,temperature regulator and thermal-couple are carried out.The results show that this set of system can completely reach the controlling properties and indices of the imported molybdenum-wound firnace in respect of furnace temperature detection and controlling and the ratio of property to price is superior to the imported equipment,which lays a good foundation for studying high temperature molybdehum-wound furnace at home.