步进梁加热炉分段式脉冲燃烧优化控制  

Optimization control of segmental pulse combustion for beam reheating furnace

作　　者：胡玲艳[1,2] 王兴成[1] 

机构地区：[1]大连海事大学信息科学技术学院,辽宁大连116026 [2]大连大学

出　　处：《冶金自动化》2014年第6期64-68,共5页Metallurgical Industry Automation

基　　金：国家自然科学基金项目(60574018)

摘　　要：针对步进梁加热炉热处理过程中出现的铜坯局部受热不均问题,对脉冲燃烧控制进行了改进。以往采用脉冲燃烧技术时,烧嘴大小火燃烧状态固定,最大火、最小火输出功率相差较大,导致加热过程工件局部受热强烈,影响热处理质量。分段式脉冲燃烧在原时序控制基础上,利用空气电动蝶阀的位置反馈,根据PLC控制输出的不同区间值设定不同的大小火燃烧状态,可保证炉内温度平稳上升,减少燃料消耗,提高热处理质量。控制过程通过自主研发的程序实现,节约硬件成本,调控灵活。实际运行效果表明系统性能稳定,控温精度高,很好地满足了工艺要求。According to the uneven heating problem for the copper billet in beam reheating furnace, the pulse combustion technology is improved. For the traditional combustion control,the burner states are constant and the difference in burner output power is big. This causes the billets local heating strongly and reduces the heat-treatment quality. Applying the segmental pulse combustion technology, the PLC output is divided into several segments. With the help of air electric butterfly valve,the big-gest and smallest burning states of the burners can be adjusted or settled in program according to PID output. This technology can make the temperature uniform and accurate. It can also reduce the fuel consumption and raise the heat treatment quality. The actual application shows that the furnace per-formance is stable and the temperature control accuracy is high. The maneuverability is flexible. The whole system meets the technological requirements perfectly.

关 键 词：步进梁加热炉 分段脉冲燃烧控制 烧嘴 PLC 

分 类 号：TG155[金属学及工艺—热处理]