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氢氧机是一种利用水电解方式现场产生氢氧混合气体的设备,可广泛用于冶炼窑炉的催化燃烧,具有显著的节能效果。为保证氢氧气体燃烧的稳定性,必须对输出氢氧气体的压力进行控制。由于氢氧气的制备过程存在时延,传统的压力控制方法难以获得理想效果。在推导出氢氧机气体压力模型的基础上,提出一种基于Smith预估的氢氧气体压力控制方法,仿真结果显示该算法可保证输出的氢氧气体压力稳定,该控制方法应用于工业样机,取得了满意的效果。
The hydrogen generator is a kind of equipment that produces hydrogen and oxygen mixed gas on the spot by the way of water electrolysis. It can be widely used in catalytic combustion of smelting kiln and has significant energy saving effect. In order to ensure the stability of oxy-hydrogen combustion, the pressure of the output hydrogen-oxygen gas must be controlled. Due to the delay in the preparation of hydrogen and oxygen, the traditional pressure control method is difficult to obtain the desired effect. On the basis of deducing the pressure model of oxyhydrogen gas machine, a pressure control method of hydrogen and oxygen gas based on Smith predication is proposed. The simulation results show that the proposed method can ensure the output pressure of hydrogen and oxygen gas to be stable. The control method is applied to industrial prototype , Has achieved satisfactory results.