共查询到20条相似文献,搜索用时 125 毫秒
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建立了以在线优化控制为目的的环形加热炉炉内传热数学模型。管坯内部采用柱坐标形式的二维非稳态导热模型,炉膛传热过程采用分段零维模型,并提出了适用于在线控制的炉内辐射换热的新解法。实测验证了模型的合理性和准确程度,实现了管坯温度的在线跟踪。在此基础上,开发了环形加热炉在线优化控制系统。该系统投入运行后,管坯加热质量有明显改善,环形加热炉燃耗和管坯氧化烧损分别降低了6%和8%。 相似文献
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通过分析钢坯在炉内的运行过程,推出了用于轧钢加热炉计算机在线最优供热控制模型的生产检测计算的新方法。经计算机仿真验证表明,该法既能保证热负荷调节准确,及时,又能保证过程控制平稳,从而使得Q-P模型对复杂生产条件的加热炉在线优化控制成为可能。 相似文献
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钢坯连续加热炉动态操作与优化控制的数学模型 总被引:2,自引:1,他引:1
本文建立了钢坯连续加热炉内钢坯加热过程的数学模型,提出以钢坯焓增过程积分值为目标函数,求取优化炉温制度的新方法。着重研究了待轧过程,得出了合理的待轧策略。开发了在线控制数学模型,通过动态补偿得出加热炉实时优化炉温设定值,使出炉钢坯温度与目标温度的偏差小于15℃,实现了加热炉的高产,优质和低耗。 相似文献
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文章详细分析环形加热炉热工机理的基础上,建立描述双燃料管坯环形加热炉的加热过程模型,研究和开发不同钢种的管坯在不同产量条件下优化加热制度,实现炉温制度在线动态优化设定和管坯温度分布在线动态跟踪及显示以及管坯待轧条件下炉子的优化加热制度。 相似文献
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《Baosteel Technical Research》2010,(Z1):101
Furnace area is regarded as looper between casting and hot rolling,which is very important for material flow balance and production organization as well as temperature regulation etc.In particular,when dealing with energy saving and emission reduction and heating quality improving,pre_heating furnace is paid more attention.The radical target for preheating furnace is to transfer heating energy at the least cost. As we know,the preheating furnace is a dissipation system to obey conservation of energy law,that is to say that input energy always equals to output energy,in the meantime,the whole energy consuming is not reversible.Therefore increasing the efficiency of using energy is uppermost.In this paper,heating transfer efficiency is analysed and mathematical expression is given based on conservation of energy law.Typical optimal methods to improve preheating furnace transfer efficiency coming from foreign factories are presented.According to these methods,every furnace zone temperatures as control variable,target discharging temperature and temperature difference in slab thickness and the temperature between neighbouring zones as well as zone temporary temperature as restrictions,minimal energy consuming as optimizing target.Baosteel preheating furnace model structure and the complicated mapping relation of control parameter set and state set and aim set are presented.Important basic models in the preheating furnace model system are analysed including temperature tracking model and temperature forecasting model and discharging pacing model and slab heating curve.First slab temperature model structure and its peripheric parameter are introduced;second two pacing models are given including timing pacing mode using fixed discharging interval and mill pacing control mode using mill rolling pacing while Baosteel pacing forecasting model using long term and short term forecasting mode) is given;third a heating curve mathematical model considering heating quality and rolling pace and energy consuming is presented;in the end summary is done and the future way is lighted.Baosteel heating model including slab and billet and steel ingot have been developed,the actual applications show a good effect.The future woks include working procedure saving energy and system saving energy considering " Oder and rule" to achieve system harmony and rhythmization.Baosteel Blooming furnaces scheduling system is very useful for smooth production and saving energy. 相似文献
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模糊控制在宝钢1580加热炉节能控制中的应用研究 总被引:1,自引:0,他引:1
模糊控制是一种智能控制,它既可以利用专家已有的经验知识,又可以从数据中学习新的知识。本文.利用模糊控制的这些特点,开发出一种新型的加热炉优化设定控制系统,并针对宝钢1580热轧加热炉建立相应的仿真系统,采用实际现场数据验证,结果表明新开发的加热炉控制系统较原系统节能达3%以上。 相似文献
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工业加热炉过程具有多变量、时变、非线性、耦合、大惯性和纯滞后等特点。当前对于加热炉温度的设定值主要还是人工操作给出。针对加热炉温度这一复杂的工业过程,设计了一个具有炉温设定的控制系统。通过建立指标优化、理想加热曲线、加热策略、待轧策略、轧线纠正、钢坯升温、钢坯温度预报和跟踪等模型以及对钢坯温度的控制,产生炉温设定值。保证炉温设定值与产量指标随工况变化实时处于优化状态。该控制系统成功应用于某钢铁公司中板工序,取得了良好的应用效果。 相似文献
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开发“转炉冶炼过程计算机动态监测及工艺参数采集系统”对操作枪位、加料及炉内化渣等参数进行动态跟踪测试,用图象化技术同步显示。运用统计优化动态修正的操作模型指导操作,使炉内成渣达到了不产生喷溅的最大乳化程度,温度平稳上升,取得了较好的冶金效果。 相似文献